Lenovo ThinkCentre A55 Hardware Maintenance Manual
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- Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 1
Hardware Maintenance Manual Types 8013 8706 8973 8982 8992 9269 9282 9374 9384 9632 9648 8700 8716 8975 8983 8994 9276 9283 9378 9387 9635 9649 8701 8717 8976 8985 8995 9277 9286 9379 9389 9637 8702 8970 8979 8986 9265 9278 9287 9380 9628 9646 8705 8972 8980 8991 9266 9279 9288 9383 9631 9647 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 2
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Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 4
Note: Before using this information and the product it supports, be sure to read the information under "Notices," on page 609. Twelfth Edition (August 2008) © Copyright Lenovo 2005, 2008. LENOVO products, data, computer software, and services have been developed exclusively at private expense and - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 5
8706, 8972, 8982, 8994, 9278, 9288, 9380, 9632, 9648, and 9649 90 Machine types 8702, 8970, 8980, 8992, 9276, 9286, 9378, and 9628 91 Replacing a memory module 91 Replacing the CMOS battery 94 Replacing the power supply 94 Replacing the system board 97 Types 8702, 8706, 8970, 8972, 8980, 8982 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 6
Type 9632 567 Machine Type 9635 580 Machine Type 9637 590 Chapter 11. Additional Service Information 605 Security features 605 Hardware controlled Passwords 605 Operating system password 605 Vital product data 605 Management Information Format (MIF) . . . 605 BIOS levels 606 Flash update - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 7
. Before servicing a Lenovo product, be sure to read the Safety Information. See Chapter 2, "Safety information," on page 3. The Symptom-to-FRU Index and Additional Service Information chapters are not specific to any machine type and are applicable to all ThinkCentre computers. This manual includes - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 8
support Lenovo's requirements and schedule. Products sold in 2005, will contain some RoHS compliant FRUs. The following statement pertains to these products and any product Lenovo produces containing RoHS compliant parts. RoHS compliant ThinkCentre the time of order. 2 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 9
be familiar with before servicing a computer. General start the machine, ensure that other service representatives and the customer's personnel place, away from all personnel, while you are servicing the machine. v Keep your tool case away to your eyes. v After service, reinstall all safety shields, - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 10
type of mat to protect yourself from electrical shock. v Find the room emergency power power before: - Performing a mechanical inspection - Working near power supplies off the power, if necessary. - Use only one hand when working with powered-on electrical high voltages; these instructions are in the - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 11
power. - Send another person to get medical aid. Safety inspection guide The intent of this inspection guide is to assist you in identifying potentially unsafe conditions on these products. Each machine, as it was designed and built, had required safety items installed to protect users and service - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 12
for worn, frayed, or pinched cables. 8. Check that the power-supply cover fasteners (screws or rivets) have not been removed or such as those listed below, to provide protection that meets the specific service requirement. Note: The use of a grounding system is desirable Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 13
when there is evidence of fire, water, or structural damage. v Disconnect the attached power cords, telecommunications systems, networks, and modems before you open the device covers, unless instructed otherwise in the installation and configuration procedures. v Connect and disconnect cables as - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 14
same module type made by as CD-ROMs, DVD-ROM drives, fiber optic devices, or transmitters) are installed, note the following: v Do not remove the covers. Removing the covers of the laser product could result in exposure to hazardous laser radiation. There are no serviceable Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 15
CAUTION: The power control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 16
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Chapter 2. Safety information 11 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 18
≥18 kg (37 lbs) ≥32 kg (70.5 lbs) ≥55 kg (121.2 lbs) 2 1 12 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 19
PERIGO A corrente elétrica proveniente de cabos de alimentação, de telefone e de comunicações é perigosa. Para evitar risco de choque elétrico: v Não conecte nem desconecte nenhum cabo ou execute instalação, manutenção ou reconfiguração deste produto durante uma tempestade com raios. v Conecte - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 20
leis ou regulamentos locais. PRECAUCIÓN: Quando produtos a laser (como unidades de CD-ROMs, unidades de DVD-ROM, dispositivos de fibra ótica ou transmissores) estiverem instalados, observe o lbs) CUIDADO: Utilize procedimentos de segurança para levantar equipamentos. 14 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 21
CUIDADO: O botão de controle de alimentação do dispositivo e o botão para ligar/desligar da fonte de alimentação não desligam a corrente elétrica fornecida ao dispositivo. O dispositivo também pode ter mais de um cabo de alimentação. Para remover toda a corrente elétrica do dispositivo, assegure que - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 22
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2 1 Chapter 2. Safety information 17 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 24
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2 1 Chapter 2. Safety information 19 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 26
le présent produit ou des périphériques qui lui sont raccordés, reportez-vous aux instructions ci-dessous pour connecter et déconnecter les différents cordons. Connexion Déconnexion 1. Mettez les d'interface des connecteurs. 4. Débranchez tous les câbles des unités. 20 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 27
de référence identique exclusivement, (référence 33F8354), ou suivre les instructions du fabricant qui en définit les équivalences. Si votre syst vigueur. ATTENTION: Si des produits à laser (tels que des unités de CD-ROM, de DVD-ROM, des unités à fibres optiques, ou des émetteurs) sont installés, - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 28
ème peut être équipé de plusieurs cordonsd'alimentation. Pour mettre l'unité hors tension, vous devez déconnectertous les cordons de la source d'alimentation. 2 1 22 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 29
VORSICHT An Netz-, Telefon- und Datenleitungen können gefährliche Spannungen anliegen. Aus Sicherheitsgründen: v Bei Gewitter an diesem Gerät keine Kabel anschließen oder lösen. Ferner keine Installations-, Wartungs- oder Rekonfigurationsarbeiten durchführen. v Gerät nur an eine - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 30
von Sondermüll beachten. ACHTUNG: Bei der Installation von Lasergeräten (wie CD-ROM-Laufwerken, DVDaufwerken, Einheiten mit Lichtwellenleitertechnik oder Sendern) Folgendes beachten: v Die Strahl blicken. Keine Lupen oder Spiegel verwenden. Strahlungsbereich meiden. 24 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 31
≥18 kg ≥32 kg ≥55 kg ACHTUNG: Arbeitsschutzrichtlinien beim Anheben der Maschine beachten. ACHTUNG: Mit dem Netzschalter an der Einheit und am Netzteil wird die Stromversorgung für die Einheit nicht unterbrochen. Die Einheit kann auch mit mehreren Netzkabeln ausgestattet sein. Um die - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 32
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Chapter 2. Safety information 27 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 34
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PERICOLO La corrente elettrica proveniente dai cavi di alimentazione, del telefono e di comunicazione può essere pericolosa. Per evitare il rischio di scosse elettriche: v Non collegare o scollegare qualsiasi cavo oppure effettuare l'installazione, la manutenzione o la riconfigurazione del - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 36
locali). ATTENZIONE: Quando vengono installati prodotti laser (quali CD-ROM, unità DVD-ROM, unità a fibre ottiche o trasmittenti), tener presente regolazioni o l'esecuzione di procedure non descritti nel presente manuale possono provocare l'esposizione a radiazioni pericolose. PERICOLO Alcune unità - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 37
≥18 kg ≥32 kg ≥55 kg ATTENZIONE: Prestare attenzione nel sollevare l'apparecchiatura. ATTENZIONE: Il pulsante di controllo dell'alimentazione presente sull'unità e l'interruttore dell'alimentatore non disattivano l'alimentazione corrente fornita all'unità. E' possibile che l'unità disponga di pi - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 38
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2 1 Chapter 2. Safety information 33 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 40
alimentación de las tomas de corriente. 3. Desconecte los cables de señal de los conectores. 4. Desconecte todos los cables de los dispositivos. 34 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 41
Deshágase de la batería según especifiquen las leyes o normas locales. PRECAUCIÓN: Cuando haya productos láser (como unidades de CD-ROM, unidades de DVD, dispositivos de fibra óptica o transmisores) instalados, tenga en cuenta lo siguiente: v No quite las cubiertas. Si quita las cubiertas - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 42
la corriente eléctrica del dispositivo, asegúrese de que todos los cables de alimentación estén desconectados de la toma de corriente. 2 1 36 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 43
: v CRU removal and installation instructions v Publications v Troubleshooting information v Parts information v Downloads and drivers v Links to other useful sources of information To access this information, point your browser to http://www.lenovo.com/ support/. © Copyright Lenovo 2005, 2008 37 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 44
section lists the physical specifications for your computer. Types 8700, 8701, 8705, 8717, 8973, 8975, 8979, 8983, 8985, 8991, 8995, 9265, 9269, 9277, 9279, 9283, 9287, 9379, 9383, 9387, 9389, 9631, 9635, 9637, 9646, and 9648 This section lists the physical specifications. Dimensions Height: 400 mm - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 45
Types 8013, 8702, 8706, 8716, 8970, 8972, 8976, 8980, 8982, 8986, 8992, 8994, 9266, 9276, 9278, 9282, 9286, 9288, 9374, 9378, 9380, 9384, 9628, 9632, 9647, and 9649 This section lists the physical specifications for your computer. Dimensions Width: 325 mm (12.8 in.) Height: 107 mm (4.21 in.) Depth: - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 46
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you in problem determination. If possible, have this information available when requesting assistance from Service Support and Engineering functions. v Machine type and model v Processor or hard disk upgrades v Failure symptom - Do diagnostics indicate a failure? © Copyright Lenovo 2005, 2008 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 48
identical systems are considered identical only if they: 1. Are the exact machine type and models 2. Have the same BIOS level 3. Have the same adapters/attachments in the same locations 4. Have the "working and non-working" systems will often lead to problem resolution. 42 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 49
computer problems, access the Lenovo troubleshooting center, update system drivers, and review system information. To run PC-Doctor for Windows, open the Start menu from the Windows desktop, select All Programs, select PC-Doctor for Windows, and click PC-Doctor for Windows. Follow the instructions - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 50
in case PC-Doctor for DOS cannot be run from the Rescue and Recovery workspace. Creating a diagnostic CD image To create a diagnostic CD image, download a self-starting bootable CD image (known as an .iso image) of the diagnostic program from http:// www.lenovo.com/support/. After you download the - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 51
automatically. Select the diagnostic test you want to run. Press the F1 key for additional help. 6. Follow the instructions on the screen. Note: Rescue media includes PC-Doctor for Windows PE. For more information about rescue media, see the User Guide for the computer. Chapter 5. Diagnostics 45 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 52
the PC. v Failure Type: Represents the type of error encountered. v DeviceID: Contains the component's unit-ID which corresponds to either a fixed disk drive, removable media drive, serial or parallel port, processor, specific RIMM, or a device on the PCI bus. v Date: 46 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 53
drives (up to 132 total drives). Drive information is gathered through FDAT's enumeration of available devices and user specific configuration parameters located in the FDAT.INI. FDAT uses information supplied by these features to indicate specifically functionality for drives that support SMART. - - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 54
erase - hard drive The diagnostics program offers two hard drive format utilities: v Quick Erase Hard Drive v Full Erase Hard Drive The Quick Erase Hard Drive provides a DOS utility that performs the following: v Destroys the Master Boot Record (MBR) on the hard drive. 48 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 55
that warn the user that this is a non-recoverable process. The Full Erase Hard Drive provides a DOS Drive utility, use the following procedure: 1. Select the UTILITY option on the toolbar and press Enter. 2. Select either the QUICK ERASE or FULL ERASE HARD DISK option and follow the instructions - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 56
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read-only memory (EEPROM) user password and an administrator password. You do not have to set a password of either type user password To set, change, or delete a user password, do the following: Note: A password can be any combination of up to eight characters (A- Z, a-z, and 0-9). © Copyright Lenovo - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 58
If both the user and administrator passwords are set, you can type either password. However Type the new password, and press Enter. 4. When prompted to confirm the password, type the password again. If you type When prompted for a password, you must type your administrator password. 1. From the Setup - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 59
from any boot device. Note: Not all CDs, hard disks power-on startup sequence, do the following: 1. Start the Setup Utility program (see "Starting the Setup Utility program" on page 51). 2. Select Advanced BIOS features. 3. Select the sequence of devices for the First Boot Device, the Second Boot - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 60
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system on the boot drive. The drive must be formatted, do the following: 1. Attempt to back-up the data on the failing hard disk drive. 2. Using the operating systems programs, format the hard disk drive. Replace the hard disk drive. Power Supply Problems If you suspect a power problem, use the - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 62
Check/Verify Check the power-on switch for continuity. FRU/Action Power-on Switch 56 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 63
on page 606 3. Run memory test 4. System board 1. Flash the system. See "Flash update procedures" on page 606 2. System board 1. Flash the system. See "Flash update procedures" on page 606 2. System board 1. Flash the system. See "Flash update procedures" on page 606 2. Adapter card 3. System board - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 64
001-027-XXX System Configuration/Setup error FRU/Action 1. Press F3 to review the log file 2. Re-start the test to reset the log file system and retest. See "Flash update procedures" on page 606 3. Go to "Undetermined problems" on page 82 1. Go to "Undetermined problems" on page 82 2. Flash the - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 65
failure 001-195-XXX System Test aborted by user 001-196-XXX System test halt, error update procedures" on page 606 3. Run memory test 4. System board System board System board 1. Adapter card 2. System board 1. Flash the system. See "Flash update procedures" on page 606 2. System board 1. Power - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 66
001-279-XXX System IRQ12 failure 001-280-XXX System IRQ13 failure 001-281-XXX System IRQ14 (hard disk drive) failure 001-282-XXX System IRQ15 failure 60 Hardware Maintenance Manual FRU/Action System board System board 1. Device on IRQ1 2. System board 1. Device on IRQ2 2. System board 1. Device on - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 67
No action 1. Video card, if installed 2. System board 1. Video card, if installed 2. System board 1. Video Ram 2. Video card, if installed 3. System board 1. Video card, if installed 2. System board 1. Video card, if installed 2. System board 1. Run Setup 2. Video drivers update 3. Video card, if - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 68
and re-test. See "Flash update procedures" on page 606 3. Replace component under function test 1. Video card, if installed 2. System board No action 1. Diskette drive Cable 2. Diskette drive 3. System board Information only Re-start the test, if necessary 1. Press F3 to review the log file 2. Re - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 69
2. Flash the system. See "Flash update procedures" on page 606 3. System board 011-03X-XXX 011-04X-XXX Serial port failure System board 011-195-XXX Serial port Test aborted by user Information only Re-start the test, if necessary 011-196-XXX 1. Press F3 to review the log file Serial port test - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 70
XXX Parallel port Test aborted by user FRU/Action 1. Make sure the update procedures" on page 606 3. Go to "Undetermined problems" on page 82 1. Go to "Undetermined problems" on page 82 2. Flash the system and re-test. See "Flash update Flash the system. See "Flash update procedures" on page 606 3. - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 71
035-XXX USB port Reset condition detected FRU/Action 1. Press F3 to review the log file 2. Re-start the test to reset the log file update procedures" on page 606 2. System board System board 1. Reboot the system 2. Flash the system and re-test. See "Flash update procedures" on page 606 3. Run memory - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 72
Test aborted by user 018-196-XXX PCI Card test halt, error threshold exceeded FRU/Action System board 1. Run setup and check for conflicts 2. Flash the system. See "Flash update procedures" on page 606 3. System board Information only Re-start the test, if necessary 1. Press F3 to review the log - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 73
Code 018-197-XXX PCI Card test warning 018-198-XXX PCI Card test aborted 018-199-XXX PCI Card test failed, cause unknown 018-250-XXX PCI Card Services error 020-000-XXX PCI Interface Test Passed 020-0XX-XXX PCI Interface error 020-195-XXX PCI Test aborted by user 020-196-XXX PCI - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 74
82 1. Go to "Undetermined problems" on page 82 2. Flash the system and re-test. See "Flash update procedures" on page 606 3. Replace component under function test 1. PCI card 2. Riser card, if installed 3. System board No action 1. IDE signal cable 2. Check power supply voltages 3. Reseat IDE signal - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 75
-XXX SCSI interface Test aborted by user 030-196-XXX SCSI interface test problems" on page 82 2. Flash the system and re-test. See "Flash update procedures" on page 606 3. Replace component under function test No action 1. SCSI signal cable 2. Check power supply 3. SCSI device 4. SCSI adapter card - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 76
aborted by user 035- 071-000-XXX Audio port Interface Test update procedures" on page 606 3. Replace component under function test No action 1. RAID signal cable 2. RAID device 3. RAID adapter card, if installed 4. System board Information only Re-start the test, if necessary 1. Press F3 to review - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 77
-195-XXX Game Port interface Test aborted by user FRU/Action 1. Run Setup 2. Flash the system. See "Flash update procedures" on page 606 3. System board 1. Speakers 2. Microphone 3. Audio card, if installed 4. System board 1. Run Setup 2. Audio card, if installed 3. System board Information only Re - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 78
review update procedures" on page 606 3. Go to "Undetermined problems" problems" on page 82 2. Flash the system and re-test. See "Flash update user Information only Re-start the test, if necessary 086-196-XXX Mouse Port interface test halt, error threshold exceeded 1. Press F3 to review - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 79
Test aborted by user 089-196-XXX problems" on page 82 2. Flash the system and re-test. See "Flash update procedures" on page 606 3. Replace component under function test No action 1. Microprocessor(s) 2. System board Information only Re-start the test, if necessary 1. Press F3 to review - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 80
failed, cause unknown 1. See "Undetermined problems" on page 82 2. Flash the system and re-test. See "Flash update procedures" on page 606 3. Replace component under function test 170-250-XXX 170-251-XXX Voltage Sensor(s) Voltage limit error 1. Power supply 2. System board 170-254-XXX Voltage - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 81
Switch 3. System board No action 1. Replace the memory module called out by the test 2. System board No action 1. Cache, if removable 2. System board 3. Microprocessor No action 1. Diskette Drive Cable 2. Check power supply voltages 3. Diskette drive 4. System board Chapter 7. Symptom-to-FRU Index - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 82
No action 1. Hard Disk Drive Cable 2. Check power supply voltages 3. Reseat the hard disk drive cable 4. Hard Disk drive (IDE) 5. System board 1. Hard Disk Drive Cable 2. Check power supply voltages 3. Reseat the hard disk drive cable 4. Hard Disk drive (SCSI) 5. SCSI adapter card 6. System board No - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 83
Diagnostic Error Code 415-000-XXX Modem Test Passed 415-XXX-XXX Modem error FRU/Action No action Remove the Modem and re-test the system Chapter 7. Symptom-to-FRU Index 77 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 84
F10 to Save and exit. 3. Perform a Boot block recovery. See "Recovering from a POST/BIOS update failure" on page 606. Perform the following actions in order. 1. Make sure the monitor is properly connected to the computer. 2. Replace the video adapter card (if present). 3. Replace the system board - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 85
series of tests is called the Power-On Self-Test, or POST. POST does the following operations. v Checks some basic system-board operations v Checks the memory operation v Starts the video operation v Verifies that the boot drive is working If the POST detects a problem, an error message appears on - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 86
key when ready Description/Action Pressing the TAB key permits the user to toggle between the default POST display screen and a custom POST display screen. The BIOS was unable to find a suitable boot device. Make sure the boot drive is properly connected to the computer. Make sure you have bootable - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 87
Computer will not power-off. See "Power Supply Problems" on page 55. 1. Power Switch 2. System Board 3. Riser card, if installed Computer Board 2. Primary Hard Disk Drive 3. Hard Disk Drive Cable Incorrect memory size during POST 1. Run the Memory tests 2. Memory Module 3. System Board ″Insert - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 88
System Board Printer problems 1. Printer 2. System Board Program loads from the hard disk with a known-good diagnostics diskette in the first 3.5-inch diskette drive 1. Run Setup and check Startup sequence. 2. Diskette Drive 3. Diskette Drive Cable 4. System Board 5. Power Supply RPL computer - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 89
d. Extended video memory e. External Cache f. External Cache RAM g. Hard disk drive h. Diskette drive 3. Power-on the computer to re-test the system. 4. Repeat steps 1 through 3 until you find the failing device or adapter. If all devices and adapters have been removed, and the problem continues - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 90
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Chapter 8. Replacing FRUs (desktop computers) This chapter is for desktop computers of the following machine types: 8013, 8702, 8706, 8716, 8970, 8972, 8976, 8980, 8982, 8986, 8992, 8994, 9266, 9276, 9278, 9282, 9286, 9288, 9374, 9378, 9380, 9384, 9628, 9632, 9647, and 9649. Important Before you - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 92
10 3 Ethernet connector 11 4 Audio line in connector 12 5 Power cord connector 13 6 Voltage selection switch Audio line out connector Microphone connector USB connectors (2) USB connectors (2) VGA monitor connector Serial connector Standard keyboard connector 86 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 93
cover. 1. Remove any media (diskettes, CDs, or tapes) from the drives, shut down the operating system, and turn off all attached devices. 2. Unplug all power cords from electrical outlets. 3. Disconnect all cover and slide the cover to the rear. Chapter 8. Replacing FRUs (desktop computers) 87 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 94
illustration will help you locate the major FRUs in the computer. 1 Fan plenum, fan, and heat sink 2 Microprocessor 3 Optical drive 4 Power switch/LED assembly 5 Hard disk drive 6 Diskette drive 7 Front panel card 8 Memory modules 9 System board 10 Power supply 88 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 95
supported by this maintenance manual include several different system boards. Locate the appropriate machine type in one of the following sections. Machine types 8013, 8716, 8976, 8986, 9266, 9282, 9374, 9384, 9646, and 9647 1 Microprocessor fan connector 2 Microprocessor and heat sink 3 Memory - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 96
Machine types 8706, 8972, 8982, 8994, 9278, 9288, 9380, 9632, 9648, and 9649 1 Microprocessor and heat sink 2 Microprocessor fan connector 3 Memory connector 1 4 Memory connector 2 5 Power connector 6 Diskette drive connector 7 IDE connector 8 SATA IDE connectors (2) 9 Power fan connector 10 Front - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 97
connector 3 Memory connector 1 4 Memory connector 2 5 Diskette drive connector 6 Power connector 7 IDE connector 1 8 IDE connector 2 9 Power fan connector 10 SATA IDE connectors (2) 11 Clear CMOS/Recovery jumper 12 Front panel connector 13 Front USB connectors (2) 14 Front audio connector 15 CD-IN - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 98
the front bezel by releasing the three tabs and pivoting the bezel forward to remove completely. 3. Slide the drive bay assembly forward far enough to enable access to the memory modules. 4. Remove the memory module being replaced by opening the retaining clips as shown. 5. Position the replacement - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 99
6. Slide the drive bay assembly towards the rear of the chassis until it snaps into position. 7. Reinstall the front bezel. 8. Go to "Completing the FRU replacement" on page 124. Chapter 8. Replacing FRUs (desktop computers) 93 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 100
for your machine type at "Identifying power supply or any part that has the following label attached. Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no servicable parts inside these components. 94 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 101
bay assembly to remove it completely from the computer. 4. Disconnect all power supply cables from the drives. 5. Disconnect all power supply cables from the system board. See the system board illustration for your machine type at "Identifying parts on the system board" on page 89. 6. Remove the - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 102
board underneath the hard disk drive. See "Replacing the hard disk drive" on page 112. 13. Reconnect all other power supply cables to the system board and the drives. Make sure the cables are correctly routed. See the system board illustration for your machine type at "Identifying parts on the - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 103
Replacing the system board The procedure to replace the system board varies depending upon the machine type. Types 8702, 8706, 8970, 8972, 8980, 8982, 8992, 8994, 9276, 9278, 9286, 9288, 9378, 9380, 9628, 9632, and 9649 Important The heat sink and microprocessor might be very hot. Make sure these - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 104
type at "Identifying parts on the system board" on page 89. 7. Remove the hard disk drive. See "Replacing the hard disk drive" on page 112. 8. Remove the screws that secure the system board to the chassis. 9. Lift the system board out of the chassis. 10. Remove the memory Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 105
. Notes: a. Notice the orientation of the notches 1 on the microprocessor. This is important when reinstalling the microprocessor on the new system board. Chapter 8. Replacing FRUs (desktop computers) 99 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 106
the new system board. 22. Reconnect the heat sink and fan assembly cable to the system board. See the system board illustration for your machine type at "Identifying parts on the system board" on page 89. 100 Hardware Maintenance - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 107
slide the drive bay assembly towards the rear of the chassis until it snaps into position. 27. Reinstall the front bezel. 28. Reinstall any PCI adapter cards that were removed. 29. Position the fan duct on the heat sink fan. 30. Go to "Completing the FRU replacement" on page 124. Types 8013, 8716 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 108
type at "Identifying parts on the system board" on page 89. 7. Remove the hard disk drive. See "Replacing the hard disk drive" on page 112. 8. Remove the screws that secure the system board to the chassis. 9. Lift the system board out of the chassis. 10. Remove the memory Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 109
, position the microprocessor so that the small triangle 1 is aligned with the corresponding triangle on the socket in the new system board. Chapter 8. Replacing FRUs (desktop computers) 103 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 110
See the system board illustration for your machine type at "Identifying parts on the system board" drive cables on the system board, and then slide the drive bay assembly towards the rear of the chassis until it snaps into position. 26. Reinstall the front bezel. 27. Reinstall any PCI adapter cards - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 111
the microprocessor varies depending upon the machine type. Types 8702, 8706, 8970, 8972, 8980, 8982, 8992, 8994, 9276, 9278, 9286, 9288, 9378, 9380, 9628, 9632, and 9649 Important The heat sink board, lift the small handle 3 and open the retainer 1 . Chapter 8. Replacing FRUs (desktop computers) 105 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 112
socket. Notes: a. Note the orientation of the notches 1 on the microprocessor. This is important when reinstalling the microprocessor on the system board. 106 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 113
drops of grease on the top of the microprocessor. Each drop of grease should be 0.03ml (3 tick marks on the grease syringe). Chapter 8. Replacing FRUs (desktop computers) 107 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 114
See the system board illustration for your machine type at "Identifying parts on the system board" Go to "Completing the FRU replacement" on page 124. Types 8013, 8716, 8976, 8986, 9266, 9282, 9374 See the system board illustration for your machine type at "Identifying parts on the system board" on - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 115
. 6. To remove the microprocessor 2 from the system board, lift the small handle 1. 7. Lift the microprocessor straight up and out of the socket. Chapter 8. Replacing FRUs (desktop computers) 109 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 116
. Holding the microprocessor with your fingers, position the microprocessor so that the triangle 1 is aligned with the corresponding triangle on the socket. 110 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 117
on the system board. 15. Connect the heat sink and fan assembly cable to the system board. See the system board illustration for your machine type at "Identifying parts on the system board" on page 89. 16. Position the fan duct on the heat sink fan. 17. Go to "Completing the - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 118
software" in the User Guide. 1. Remove the drive cables from the system board. Then pull upward on the handle 1 on the drive bay assembly to remove it completely from the computer. 4. Disconnect the signal and power cables from the rear of the hard disk drive. 112 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 119
the retaining clips in the bottom of the chassis when you slide the bracket to the right. 9. Slide the hard disk drive and bracket to the right until it snaps into position. 10. Connect the signal and power cables to the rear of the hard disk drive. Chapter 8. Replacing FRUs (desktop computers) 113 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 120
assembly with the two slots and rails on the sides of the chassis, reconnect the drive cables on the system board, and then slide the drive bay assembly towards the rear of the chassis until it snaps into position. 12. Reinstall the front bezel. 13. Go to "Completing the FRU replacement" - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 121
the bezel forward to remove completely. 3. Slide the drive bay assembly forward until the drive bay assembly is aligned with the two slots on the drive. 4. Pull upward on the handle 1 on the drive bay assembly to remove it completely from the computer. 5. Release the optical drive from the drive - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 122
7. Remove the retainer bracket from the failing drive and install it on the new drive. 8. Install the new optical drive into the bay until it snaps into position. 9. Reconnect the signal and power cables to the rear of the optical drive. 10. Align the drive bay assembly with the two slots and rails - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 123
drive by pressing inward on the blue retainer at the side of the drive. 6. Remove the failing diskette drive by sliding it out the front of the drive bay assembly. 7. Remove the retainer bracket from the failing drive and install it on the new drive. Chapter 8. Replacing FRUs (desktop computers - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 124
the front until it snaps into position. 9. Reconnect the signal and power cables to the rear of the diskette drive. 10. Align the drive bay assembly with the two slots and rails on the sides of the chassis and slide the drive bay assembly towards the rear of the chassis until it snaps into - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 125
it completely from the computer. 4. Remove the hard disk drive. See "Replacing the hard disk drive" on page 112. 5. Disconnect the power switch/LED assembly cable from the system board. See the system board illustration for your machine type at "Identifying parts on the system board" on page 89 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 126
into the chassis and secure the assembly with the screw. 10. Connect the power switch/LED cable to the system board. 11. Reinstall the hard disk drive. See "Replacing the hard disk drive" on page 112. 12. Align the drive bay assembly with the two slots and rails on the sides of the chassis - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 127
the front panel assembly cables from the system board. See the system board illustration for your machine type at "Identifying parts on the system board" on page 89. 5. Remove the screw that secures the front panel card assembly to the chassis. Chapter 8. Replacing FRUs (desktop computers) 121 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 128
card assembly through the hole in the chassis and to the system board. 8. Install the front panel card assembly into the chassis and secure it with the screw. 9. Connect the front panel assembly cables to the system board. 10. Align the drive the drive bay assembly forward until the drive bay - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 129
the drive bay assembly with the two slots and rails on the sides of the chassis and slide the drive bay assembly towards the rear of the chassis until it snaps into position. 12. Reinstall the front bezel. 13. Go to "Completing the FRU replacement" on page 124. Chapter 8. Replacing FRUs (desktop - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 130
Also, depending on the FRU that is replaced, you might need to confirm the updated information in the Setup Utility program. Note: When the power cord is first plugged in, the computer might appear to turn on for a might impede the replacement of the computer cover. 124 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 131
Important Correctly route all power supply cables to avoid interference with the drive bay assembly. Keep cables clear of the hinges and sides of the computer chassis. 3. Position the computer cover on the chassis so that the rail guides on the sides of the cover engage the rails and push the cover - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 132
126 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 133
Chapter 9. Replacing FRUs (tower computers) This chapter is for tower computers of the following machine types: 8700, 8701, 8705, 8717, 8973, 8975, 8979, 8983, 8985, 8991, 8995, 9265, 9269, 9277, 9279, 9283, 9287, 9379, 9383, 9387, 9389, 9631, 9635, 9637, 9646, and 9648. Important Before you replace - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 134
rear of the computer. 1 Power supply diagnostic LEDs 2 Voltage selection switch (some models) 3 Power connector 4 Mouse connector 5 Audio line out connector 14 Audio line in connector 15 PCI and PCI Express adapter slots (type of adapter depends on system board) 128 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 135
-sensitive devices" on page 6 before opening the cover. 1. Shut down the operating system, remove any media (DVDs, CDs, or tapes) from the drives, and turn off all attached devices. 2. Unplug all power cords from electrical outlets. 3. Disconnect all cables attached to the computer. This includes - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 136
3 Memory modules 4 Optical drive 5 Diskette drive 6 Bezel 7 Power switch/LED assembly 8 Internal speaker 9 Front audio/USB assembly 10 Hard disk drive 11 System board 12 System fan 13 Power supply Identifying parts on the system board The machine types supported by this maintenance manual include - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 137
types 8700, 8717, 8979, 8991, 9269, 9283, 9383, 9631, and 9646 1 Microprocessor fan connector 2 Microprocessor and heat sink 3 Memory connector 1 4 Memory connector 2 5 Clear CMOS/Recovery jumper 6 Power connector 7 Diskette drive connector 8 IDE connector 1 9 IDE connector 2 10 Battery 11 Power - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 138
Machine types 8705, 8975, 8985, 9265, 9279, 9379, 9389, 9637, and 9648 1 Microprocessor and heat sink 2 Microprocessor fan connector 3 Memory connector 1 4 Memory connector 2 5 Power connector 6 Diskette drive connector 7 IDE connector 8 SATA IDE connectors (2) 9 Power fan connector 10 Front panel - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 139
connector 3 Memory connector 1 4 Memory connector 2 5 Diskette drive connector 6 Power connector 7 IDE connector 1 8 IDE connector 2 9 Power fan connector 10 SATA IDE connectors (2) 11 Clear CMOS/Recovery jumper 12 Front panel connector 13 Front USB connectors (2) 14 Front audio connector 15 CD-IN - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 140
"Removing the cover" on page 129. Note: For this procedure, it helps to lay the computer on its side. 2. Disconnect the power supply cables from the system board and from all drives. 3. Remove the four screws that secure the power supply at the rear of the chassis. 134 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 141
the system board" on page 130. 8. Reconnect a power supply connector to each of the drives. 9. Go to "Completing the FRU replacement" on page 160. Replacing the system board The procedure to replace the system board is varies depending upon the machine type. Types 8701, 8705, 8973, 8975, 8983, 8985 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 142
system board more accessible. 3. Remove any adapter cards installed in the PCI connectors. 4. Disconnect the signal and power cables from the hard disk drive. 5. Press the release tab 1 down, slide the hard drive cage 2 back, and pivot the hard disk drive outward as shown. 6. Carefully take note of - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 143
12. Lift the heat sink and fan assembly off the failing system board. Place the heat sink on its side so that the thermal grease does not come in contact with anything. Chapter 9. Replacing FRUs (tower computers) 137 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 144
. Notes: a. Note the orientation of the notches 1 on the microprocessor. This is important when reinstalling the microprocessor on the new system board. 138 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 145
the system board. 21. Connect the heat sink and fan assembly cable to the new system board. See the system board illustration for your machine type at "Identifying parts on the system board" on page 130. Chapter 9. Replacing FRUs - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 146
system board more accessible. 3. Remove any adapter cards installed in the PCI connectors. 4. Disconnect the signal and power cables from the hard disk drive. 5. Press the release tab 1 down, slide the hard drive cage 2 back, and pivot the hard disk drive outward as shown. 6. Carefully take note of - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 147
sink and fan assembly cable from the system board. See the system board illustration for your machine type at "Identifying parts on the system board" on page 130. 11. Rotate handle 1 to release 2 from the system board socket, lift the small handle 1 . Chapter 9. Replacing FRUs (tower computers) 141 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 148
handle is in the raised position. 18. Lower the microprocessor straight down into the system board socket of the new system board. 142 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 149
type drive back into position. 23. Connect the power and signal cables to the hard disk drive. 24. Connect all cables to the system board. See the system board illustration for your machine type type. Types 8701, 8705, 8973, 8975, 8983, 8985, 8995, 9265, 9277, 9279, 9287, 9379, 9387, 9389, 9635, 9637 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 150
4. Remove the four screws securing the heat sink and fan assembly to the system board. 5. Lift the heat sink and fan assembly off the failing system board. Place the heat sink on its side so that the thermal grease does not come in contact with anything. 144 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 151
of the microprocessor. Do not touch the gold contacts on the bottom. 7. Lift the microprocessor straight up and out of the socket. Chapter 9. Replacing FRUs (tower computers) 145 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 152
in the microprocessor socket. Important To avoid damaging the microprocessor contacts, do not tilt the microprocessor when installing it into the socket. 146 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 153
the system board" on page 130. 16. Go to "Completing the FRU replacement" on page 160. Types 8700, 8717, 8979, 8991, 9269, 9283, 9383, 9631, and 9646 Important The heat sink and its right side to help make the microprocessor more accessible. Chapter 9. Replacing FRUs (tower computers) 147 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 154
the heat sink and fan assembly cable from the system board. See the system board illustration for your machine type at "Identifying parts on the system board" on page 130. 4. Rotate handle 1 to release the the thermal grease does not come in contact with anything. 148 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 155
. c. Do not drop anything onto the microprocessor socket while it is exposed. The socket pins must be kept as clean as possible. Chapter 9. Replacing FRUs (tower computers) 149 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 156
into the system board socket of the new system board. 11. Lower the small handle to secure the microprocessor in the socket. 150 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 157
to the system board. See the system board illustration for your machine type at "Identifying parts on the system board" on page 130. 15. Go to "Completing the FRU replacement" on page 160. Replacing a memory module To replace a memory module: 1. Remove the computer cover. See "Removing the cover" on - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 158
, press the release button 1 to open the adapter latch 2 and remove the adapter by pulling it straight out of the adapter connector. 152 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 159
software, refer to ″Recovering Software″ in the User guide. 1. Remove the computer cover. See "Removing the power cables from the hard disk drive. 3. Press the release tab 1 down, slide the hard drive cage 2 back, and pivot the hard disk drive outward as shown. Chapter 9. Replacing FRUs (tower - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 160
Pull on the blue handle 3 to remove hard disk drive from the drive cage. 6. Remove the failing hard disk drive from the blue plastic bracket from by flexing the sides of the bracket enough to free it from the hard disk drive. 7. To install the new drive into the blue bracket, flex the bracket, and - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 161
8. Slide the new hard disk drive into the drive cage until it snaps into position. 9. Align the drive cage pivot pin with the slot 1 in the upper drive cage and slide the hard disk drive into the chassis. Chapter 9. Replacing FRUs (tower computers) 155 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 162
bracket from the drive being replaced and install it on the new drive. 5. Slide the new optical drive into the bay from the front until it snaps into position. 6. Connect the signal and power cables to the drive. 7. Go to "Completing the FRU replacement" on page 160. 156 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 163
signal and power cables from the rear of the diskette drive. 4. Press the release button and slide the diskette drive out the power cable from the system board. See "Identifying parts on the system board" on page 130. 3. Pull the system fan assembly out of chassis. Chapter 9. Replacing FRUs (tower - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 164
4. Install the new system fan assembly by aligning the rubber mounts of the system fan assembly with the holes on the chassis and push the rubber mounts through the holes. 5. Pull on the tips of the rubber mounts until the fan assembly is in place. 158 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 165
to "Completing the FRU replacement" on page 160. Replacing the front audio/USB assembly 1. Remove the computer cover. See "Removing the cover" illustration for your machine type at "Identifying parts on the system board" on page 130. 4. Note the power switch/LED assembly cable tower computers) 159 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 166
type at power cords to the computer. See "Rear connectors" on page 128. 4. If you have replaced the system board, you must update (flash) the BIOS. See "Flash update procedures" on page 606. 5. Some FRU replacements require the configuration to be updated - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 167
is not RoHS compliant. Machine Type 8013 Item # 8013 FRUs 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO A1K A1R A2K A2R A3S A3P CTO) 2 Microprocessor, 2800+ Sempron AM2 (1.6 GHz processor, 62W) (models CTO) 2 Microprocessor, 3000+ Sempron AM2 (1.6 GHz processor, 62W) (models CTO - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 168
CTO) 3 DVD-ROM drive (16X/48X) (models CTO A8S A8P A8Y A8V 23V) 3 DVD-ROM drive (16X/48X) (models CTO A8S A8P A8Y A8V 23V) 3 DVD-ROM drive (16X/48X) (models CTO A8S A8P A8Y A8V 23V) 3 DVD-ROM Drive - 16x/48x SATA With DVD Playback (models CTO A8S A8P A8Y A8V 23V 28L 28Q 36S 36P 36Y) 3 Combo - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 169
DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO 22K 22R D2U D2F 39J D3K D4J) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO) 5 Hard disk drive Small desktop power supply (non-smokeless) (models CTO A1K A1R - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 170
34S 34P 34Y 35S 35P 35Y) 10 220 Watt Power Supply - china (models CTO-A A5Q 24Q ABS ABP ABY 81S 81P 81Y 34S hardware kit (all models) Hard disk drive bracket asm (plastic and grommets) (all models) Hard disk drive fan and bracket asm (all models) 1 Y 1 Y 1 Y 164 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 171
25K 25R 33K 33R) Nvidia GeForce 6200TC 64MB 32bit (models CTO) Nvidia GeForce 7300LE 128MB 64bit (models CTO) ATI Radeon X1300PRO 256MB 128bit (models CTO) ATI X1300LE 256M 64bit LP / ATX with DMS59 (models CTO) Internal USB Memory Card Reader (models CTO A1K A1R A2K A2R A3S A3P A3Y A6K A6R A7U A7F - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 172
8013 Power Cords Line Cord - LA High Volt (APU) (models A3Y A4Y A8Y 26Y 31Y D1Y ABY 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 8013 Windows XP Home Recovery CDs US/UK/AP/TH (models A1R A2R A6R A7U 21R 22R 25R AAR 82U 83R - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 173
8013 Windows XP Pro Recovery CDs US/UK/AP/TH (models A9U 24Q 32U D1U) FR/ TC (models A8V 23V) FRU# 42Y3549 42Y3550 42Y3554 42Y3552 CRU Tier 1 1 1 1 41W7757 1 8013 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 174
) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 8013 Vista Business 32 Recovery DVDs FRU# 87H4482 87H4483 87H4484 87H4485 87H4486 87H4487 87H4488 87H4489 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 175
Machine Type 8700 Item # 8700 FRUs 1 Heatsink for AMD Sempron & Athlon AM2 processors (all models) 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO) 2 Microprocessor, 3000+ Sempron AM2 (1.6 GHz processor, 62W) (models CTO A1U A1F A2U A2F A3U A3F A4S A4P A4Y C1U AGS AGP AGY) 2 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 176
SDRAM (models CTO D6K D6R) 3 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO B1V 23V D4V) 4 DVD-ROM drive (16X/48X) (models CTO B1V 23V D4V) 4 DVD-ROM drive (16X/48X) (models CTO B1V 23V D4V) 4 DVD-ROM Drive - 16x/48x (models CTO B1V 23V D4V - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 177
assembly (all models) 7 Power switch/LED assembly (all models) 8 Speaker assembly, soldered terminals (models CTO A1M A3M B1V 21V 22M 25M D1V D3M D5M) 9 Front audio/USB assembly (all models) 10 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO ) 10 Hard disk drive, 80GB (7200RPM), Serial - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 178
drive, 250GB (7200RPM), Serial ATA (models CTO 36K 36R D5U D5F) 10 Hard disk drive, 500GB (7200RPM), Serial ATA (models CTO) 11 System board, AMD for Vista and XP (models CTO ) 13 Power supply (300W) (models CTO) 13 Power supply (230W) (models CTO A1U A1F 13 Power supply (250W) (models CTO A1U - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 179
(models) Kit, Miscellaneous hardware (all models) Cable, hard disk drive and optical signal (all models) Front system fan (all models) 4-pin PATA to 15-pin SATA power connector (all models) SATA cable, 457 mm (models) Retainer, Card Reader (all models) Retention Module Assembly, AMD (all models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 180
41R0018 41U3019 CRU Tier 1 1 1 1 RoHS? Y Y Y Y 8700 Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO A3U A3F A8U A8F A8S A8P A8Y 26U 26F 33U 33F 33S 33P - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 181
) Internal USB Memory Card Reader (models CTO A4S A4P A4Y B2U B2F 43U 43F 46G D5U D5F) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) Speakers (2-piece) Lenovo Logo (models B2U B2F 43U 43F D5U D5F) Speaker Power brick - US, Canada, LA - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 182
8700 Power Cords Line Cord - Taiwan ( 42Y3597 CRU Tier 1 RoHS? Y 42Y3598 1 Y 42Y3602 1 Y 42Y3600 1 Y 41W7773 1 Y 8700 Windows XP Pro Recovery CDs US/UK/AP/TH (models A2U A7U 24Q 25U 27U 28U 32U 34U 35U D1U D2U D3U 41U 42U Tier 1 RoHS? Y 1 Y 1 Y 176 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 183
8700 Windows XP Pro Recovery CDs IT (models 46G) BR (models D2P 45P) SP/LA (models 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 8700 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 184
) SL (models) RE (models) 8700 Vista Home Basic 32 Recovery DVDs 8700 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models (models) SL (models) RE (models) 178 Hardware Maintenance Manual FRU# 87H4435 87H4436 87H4437 87H4438 87H4439 87H4440 87H4441 87H4442 87H4443 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 185
Type 8701 Item # 8701 FRUs 1 Heatsink for Intel CPUs (all models) 1 Heatsink for Intel CPUs (models CTO) 1 Heatsink for Intel CPUs (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO A1C A6V A7K) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 186
74G 75G 76G 77G) 3 Memory module, 1 GB PC2-4200 (533MHz) DDR2 SDRAM (models CTO) 3 Memory module, 512 MB PC2-5300 (667MHz) DDR2 SDRAM (models CTO B1K B1R B2K B2R B3K N N N N N N N N N N N N N N N N N 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 180 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 187
FRUs 3 Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO D2K D2R G2K G2R F3K F3R) 4 DVD-ROM drive (16X/48X) (models CTO 71G A6V 73G 74G 75G) 4 DVD-ROM drive (16X/48X) (models CTO 71G A6V 73G 74G 75G) 4 DVD-ROM drive (16X/48X) (models CTO 71G A6V 73G 74G 75G) 4 DVD-ROM Drive (16x/48x - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 188
drive, 250GB (7200RPM), Serial ATA (models CTO) 10 Hard disk drive, 500GB (7200RPM), Serial ATA (models CTO) 11 System board, SiS 662 Gig E for Vista and XP (models CTO models) 13 Power supply (300W) (models CTO) 13 Power supply (230W) (models CTO A2A A2T B1K 13 Power supply (250W) (models CTO A2A - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 189
models) 4-pin PATA to 15-pin SATA power connector (all models) SATA cable, 457mm (models) Retainer, Card Reader (all models) Retention Module Assembly, AMD N 1 1 1 1 1 RoHS? Y Y Y N N N N N 8701 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1C A2A A3Q A3H A5Q A4C B1R B2R B3R - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 190
Lenovo CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO 2 Y 2 Y 2 Y 2 Y 2 Y Line Cord - US (models) 8701 Power Cords FRU# 41R3184 CRU Tier 1 RoHS? Y 184 Hardware Maintenance - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 191
8701 Power Cords Line Cord - US (models) Line Cord - China (models 33C) Line Cord - China (models 33C) Line Cord - Brazil (models) Line Cord - Brazil (models) Line Cord - - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 192
Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 8701 Windows XP Pro Recovery CDs US/UK/AP/TH (models A2A A2T 41A 41T 52Q D1A D1T D1H 75G 76G 77G 76G 77G) AE (models 75G 76G 77G) 186 Hardware Maintenance Manual FRU# 42Y3549 42Y3717 42Y3550 42Y3551 42Y3552 42Y3553 42Y3555 42Y3556 42Y3718 42Y3719 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 193
8701 Windows XP Pro Recovery CDs RU (models 75G 76G 77G) TR (models 75G 76G 77G) HU -TC (models D18) Multilingual 1 (models 75G 76G 77G) Multilingual 2 (models 75G 76G 77G) 8701 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 194
GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 8701 Vista Business 32 Recovery DVDs FRU# 87H4477 87H4478 87H4479 87H4480 87H4481 87H4482 87H4483 87H4484 87H4485 87H4486 87H4487 87H4488 87H4489 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 195
Machine Type 8702 Item # 8702 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 1 Heatsink for Intel processors (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 196
DVD-ROM drive (16X/48X) (models CTO 71G 72G) 3 DVD-ROM drive (16X/48X) (models CTO 71G 72G) 3 DVD-ROM drive (16X/48X) (models CTO 71G 72G) 3 DVD-ROM Drive (16x/48x) (models CTO 71G 72G FDJ G5J H1K H1J H5S H5P H5Y H6S H6P H6Y H9J HAJ) 3 Combo 48 -32 -48 -16 - - DVD 190 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 197
HKJ HBJ ) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO ADJ AEJ BFJ BGJ 4EJ 4FJ DCJ DDJ F6K F6R H8J HKJ HBJ ) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO ) 5 Hard disk drive, 80GB (7200RPM), Serial - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 198
drive, 500GB (7200RPM), Serial ATA (models CTO) 6 Diskette drive, 3,5″, 1.44MB, 2-mode, (w/bezel) (models CTO Audio with bracket (all models) 8 Memory module, 512 MB PC2-4200 (533MHz) DDR2 SDRAM (models CTO sink. 10 220W Small desktop power supply (non-smokeless) (models CTO B1K B1R B2K B2R B3K - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 199
8702 FRUs 1 drop IDE cable (all models) Thermal grease kit (models CTO) Shield, EMC, system board (all models) Shield, EMC, blank 5.25in. drive bay (all models) Shield, EMC, blank diskette drive bay (all models) Cover (all models) Mechanical shell kit (all models) Bezel kit (all models) - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 200
MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO dual VGA (models CTO) Dongle Cable - DMS59 to dual VGA (included in Denver L1) (models CTO) FRU# 41R3378 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 201
G4K) Nvidia GeForce 6200TC 64MB 32bit (models CTO) Nvidia GeForce 7300LE 128MB 64bit (models CTO) ATI X1300LE 256M 64bit LP / ATX with DMS59 (models CTO) X1300 LE 256MB (models CTO) ATI Radeon X1300PRO 256MB 128bit (models CTO) Internal USB Memory Card Reader (models CTO B1K B1R B2K B2R B3K B3R 53K - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 202
8702 Power Cords Line Cord - Denmark (models 71G 72G) FRU# 42Y3597 41W7778 41W7790 41W7773 CRU Tier 1 1 1 1 RoHS? Y Y Y Y 8702 Windows XP Pro Recovery CDs US/UK/AP/TH (models 51Q D1H 43H F6R F7R F8R F9R FAR 71G 72G) RE (models 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y 196 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 203
8702 Windows XP Pro Recovery CDs FI (models 71G 72G) NO (models 71G 72G) NL (models 71G 72G) HE 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 8702 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 204
TW (models) HK (models) KR (models) SL (models) RE (models) 8702 Vista Home Basic 32 Recovery DVDs 8702 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 198 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 205
Machine Type 8705 Item # 8705 FRUs 1 Heatsink for Intel CPUs (all models) 1 Heatsink for Intel CPUs (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO A1C ACC) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A2A A2T A2B A2H A3Q A4U A5U A6C A7Q - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 206
E4600 CONROE 800/2400MHZ-2M, LGA, EM64T M0 (models) 3 Memory module, 512 MB PC2-4200 (533MHz) DDR2 SDRAM (models CTO A5U D4U D5U D6U D8U D8F 71G 72G 73G 74G A9U 21U N N N N N N N N N N N N N N N N N N N N N 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 200 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 207
Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO 71G 72G A8V 26U 26F J2C J2B J2H) 4 DVD-ROM drive (16X/48X) (models CTO 71G 72G A8V 26U 26F J2C J2B J2H) 4 DVD-ROM drive (16X/48X) (models CTO Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 208
J2B J2H) 6 Bezel assembly (all models) 7 Power switch/LED assembly (all models) 8 Speaker assembly, soldered terminals (all models) 9 Front audio/USB assembly (all models) 10 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO A1C ACC) 10 Hard disk drive, 80GB (7200RPM), Serial ATA (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 209
8705 FRUs 11 System board, Intel for Vista and XP, Japan (models CTO A1C A2A A2T A2B A2H A3Q A4U A5U A6C A7Q for the heat sink. 11 System board, 946GZ (modify PCB solve Conroe CPU issue and modify PCB solve Japan smokeless issue) (models CTO A1C A2A A2T A2B A2H A3Q A4U A5U A6C A7Q 42C 43Q 51Q 61K - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 210
Rear w/ grommets & Grill (all models) 13 Power supply (300W) (models CTO) 13 Power supply (230W) (models CTO A2A A2T A4U A5U 61K 61R D3K D3R D4U drive and optical signal (all models) Front system fan (all models) 4-pin PATA to 15-pin SATA power connector (all models) 204 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 211
(all models) Chassis assembly (all models) SATA cable, 457mm (all models) Card reader retainer (models) RM Asm, Intel (models) FRU# 41R2913 41R4791 41R6106 1 1 N 2 N RoHS? N N N N Y Y Y 8705 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1C A2A A2H A3Q A4U A5U A6C A7Q - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 212
Keyboards (Lenovo Preferred MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO Y 2 Y 2 Y 2 Y 2 Y 2 Y 2 Y 2 Y 2 Y 2 Y 2 Y 2 Y 2 Y 2 Y 2 Y 206 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 213
Adapters and miscellaneous FRUs Speakers (2-piece) Lenovo Logo (models 22U 32U 32F FAU G4U G4F) Speaker Power brick - US, Canada, LA low voltage, ASEAN (models 22U 32U 32F FAU G4U G4F) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO) FRU# 41A5331 89P8571 41A5334 39J9334 CRU - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 214
Power Line Cord - Thailand (models A2T J1T) 8705 Windows XP Home Recovery CDs US/UK/AP/TH (models A4U 61R D3R RU (models 71G 73G 74G) TR (models 71G 73G 74G) 208 Hardware Maintenance Manual FRU# 41R3220 41R3221 41R3341 41R3175 41R3248 41R3249 41R3196 41R3197 41R3224 41R3225 43N9029 43N9030 CRU Tier - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 215
8705 Windows XP Pro Recovery CDs HU (models 71G 73G 74G) PO (models 71G 73G 74G) GK (models J1K) Multilingual 1 (models 71G 73G 74G) Multilingual 2 (models 71G 73G 74G) 8705 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 216
8705 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP ( 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 210 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 217
Machine Type 8706 Item # 8706 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 1 Heatsink for Intel processors (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 218
DVD-ROM drive (16X/48X) (models CTO K2C K2B K2H) 3 DVD-ROM drive (16X/48X) (models CTO K2C K2B K2H) 3 DVD-ROM Drive - (16x/48x) (models CTO K2C K2B K2H K4B K4H K5B K5H M2S M2P M2Y M4S M4P M4Y) 3 DVD-ROM drive (16X/48X) (models CTO K2C K2B K2H) 3 Combo Y Y Y Y Y Y 212 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 219
BCJ BDJ 4BJ 4CJ) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO ADJ AEJ D3J D4J BCJ BDJ 4BJ 4CJ) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO ) 5 Hard disk drive, 80GB (7200RPM), Serial ATA (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 220
L1K L1J) 6 Diskette drive, 3,5″, 3.5″ 1.44MB 2 Mode (models CTO A2C A2B A2H A3J Audio with bracket (all models) 8 Memory module, 512 MB PC2-4200 (533MHz) DDR2 SDRAM (models CTO Sys Planar Japan for Vista and XP (models CTO A1Q A2C A2B A2H A3J A4J A5J Y Y Y Y Y Y 214 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 221
M1Y M2S M2P M2Y M3S M3P M3Y M4S M4P M4Y) 10 220W Small desktop power supply (non-smokeless) (models CTO 53K 53R 54K 54R 62K 62R 63K 63R D5F D5U F7U F7F F8K F8R K1M K1A K1T K1V K1K L1M L1A L1T L1V L1K) 10 220 Watt Power Supply - WW (models CTO 53K 53R 54K 54R 62K 62R 63K 63R D5F D5U F7U F7F F8K F8R - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 222
Small desktop power supply (smokeless DCJ DDJ DEJ K1J L1J) 10 220 Watt Power Supply - China (models CTO-A CTO-L A1Q A2C A2B A2H 51Q 52Q 52C 52B kit (all models) Hard disk drive bracket asm (plastic and grommets) (all models) Hard disk drive fan and bracket asm (all Y 216 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 223
CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO 2 Y 2 Y 2 Y 2 Y 8706 Power Cords Line Cord - US (models D5F D5U - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 224
8706 Power Cords Line Cord - China (models A2C 52C D6C G2C K2C) Line Cord - Brazil (models) Line Cord - 43N9030 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 218 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 225
FBK G3K) FRU# 42Y3597 41W7773 CRU Tier 1 1 RoHS? Y Y 8706 Windows XP Pro Recovery CDs US/UK/AP/TH (models A2H 51Q 52Q 52H D1Q D5U D6Q D6H 41H 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y 8706 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT ( - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 226
RE (models) 8706 Vista Home Basic 32 Recovery DVDs 8706 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 220 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 227
Machine Type 8970 Item # 8970 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 1 Heatsink for Intel processors (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 228
CTO) 3 DVD-ROM drive (16X/48X) (models CTO 71G 72G) 3 DVD-ROM drive (16X/48X) (models CTO 71G 72G) 3 DVD-ROM Drive (16x/48x) (models CTO 71G 72G) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO) 3 Combo 48 -32 -48 -16 - - DVD - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 229
(models CTO) 8 Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 9 System board, SiS 662 Gig E Sys Planar for Vista and XP (models CTO 71G 72G) Note: When ordering a new system board, you must also order a new retention module for the heat sink. 10 220W Small desktop power supply (non - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 230
71G 72G) Turkish 440 (models 71G 72G) Turkish 179 (models 71G 72G) UK English (models 71G 72G) 224 Hardware Maintenance Manual FRU# 41R4808 41N8267 42Y8005 42Y8006 42Y8007 42Y8008 41R4813 41A7139 CRU Tier N N N N N N N N RoHS? Y Y Y Y Y Y Y FRU# 41A5039 41A5040 41A5041 41A5042 41A5043 41A5045 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 231
CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO Cord - China (models) 8970 Power Cords FRU# 41R3184 41R3185 41R3256 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 232
8970 Power Cords Line Cord - Brazil (models) Line Cord - Brazil (models) Line Cord - LA High Volt ( - Thailand (models) 8970 Windows XP Home Recovery CDs US/UK/AP/TH (models) RE (models) FR/CF (models) GR (models) SP/LA (models) 226 Hardware Maintenance Manual FRU# 41R3270 41R3271 41R3176 41R3177 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 233
models) TR (models) HU (models) PO (models) GK (models) Japanese (models) Simplified Chinese (models) Taiwan-TC (models) Hong Kong-TC (models) Korea (models) 8970 Windows XP Pro Recovery CDs US/UK/AP/TH (models 71G 72G) RE (models 71G 72G) FR/CF (models 71G 72G) GR (models 71G 72G) SP/LA (models 71G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 234
8970 Windows XP Pro Recovery CDs TR (models 71G 72G) HU (models 71G 72G) PO (models 71G 72G) GK (models 71G 72G) SL (models 71G 72G) Multilingual 1 (models 71G 72G) Multilingual 2 (models 71G 72G) 8970 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 235
GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 8970 Vista Business 32 Recovery DVDs FRU# 87H4480 87H4481 87H4482 87H4483 87H4484 87H4485 87H4486 87H4487 87H4488 87H4489 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 236
Machine Type 8972 Item # 8972 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2. - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 237
(models) 3 DVD-ROM Drive - 16x/48x SATA With DVD Playback (models CTO) 3 DVD-ROM drive (16X/48X) (models CTO 71G 72G) 3 DVD-ROM drive (16X/48X) (models CTO 71G 72G) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO) 3 Combo 48 -32 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 238
PCB solve Conroe CPU issue and modify PCB solve Japan smokeless issue) ver1.2 matrix from 43C3504 & 43C3505 (models CTO) Note: When ordering a new system board, you must also order a new retention module for the heat sink. 9 System board, 946GZ (models CTO) 10 220W Small desktop power supply (non - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 239
8972 FRUs 1 drop IDE cable (all models) Thermal grease kit (models CTO) Shield, EMC, system board (all models) Shield, EMC, blank 5.25in. drive bay (all models) Shield, EMC, blank diskette drive bay (all models) Cover (all models) Mechanical shell kit (all models) Bezel kit (all models) - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 240
CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO Y Y Y Y Y Y Y 8972 Power Cords Line Cord - US (models) Line Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 241
8972 Power Cords Line Cord - Italy ((models) Line Cord - Indonesia, Laos, Cambodia, and - Hong Kong (models) Line Cord - Thailand (models A2T J1T) Line Cord - Thailand (models A2T J1T) 8972 Windows XP Home Recovery CDs US/UK/AP/TH (models) RE (models) FR/CF (models) GR (models) SP/LA (models) IT - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 242
-TC (models) Hong Kong-TC (models) Korea (models) 8972 Windows XP Pro Recovery CDs US/UK/AP/TH (models) RE (models) FR/CF (models (models) Korean (models) Multilingual 1 (models) 236 Hardware Maintenance Manual FRU# 42Y3809 42Y3810 42Y3811 42Y3812 42Y3813 41W7796 41W7778 41W7784 41W7790 41W7773 CRU - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 243
8972 Windows XP Pro Recovery CDs Multilingual 2 (models) 8972 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/ ) TW (models) HK (models) KR (models) SL (models) RE (models) 8972 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 244
models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 8972 Vista Business 32 Recovery DVDs FRU# 87H4486 87H4487 87H4488 87H4489 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 238 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 245
Machine Type 8973 Item # 8973 FRUs 1 Heatsink for Intel CPUs (all models) 1 Heatsink (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO 71G 72G) 2 Microprocessor, Celeron D 2.93GHz 533MHz FSB - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 246
CTO) 3 Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO 71G 72G 73G) 4 DVD-ROM drive (16X/48X) (models CTO 71G 72G 73G) 4 DVD-ROM drive (16X/48X) (models CTO 71G 72G 73G) 4 DVD-ROM Drive (16x/48x) (models) 4 Combo Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 247
Planar for Vista and XP (models CTO 71G 72G 73G 74G 75G 78G 79G) Note: When ordering a new system board, you must also order a new retention module for the heat sink. 12 Fan, Rear w/ grommets & Grill (all models) 13 Power supply (300W) (models CTO) 13 Power supply (230W) (models CTO 71G 72G 73G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 248
Card Reader (all models) Front Fan AVC (all models) Optional HDD Bracket Assembly, without 4Pin cable (all models) Chassis assembly (all models) ODD/FDD/Cardreader Retainers (models) RM Asm, Intel (models) 8973 Keyboards (Lenovo 74G 75G) 242 Hardware Maintenance Manual FRU# 41R2913 41R4791 41R6106 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 249
CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO ) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO Y Y Y Y 8973 Power Cords Line Cord - US - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 250
8973 Power Cords Line Cord - Korea (models) Line Cord - UK, Ireland, Singapore, Malaysia, Brunei ( 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 8973 Windows XP Home Recovery CDs US/UK/AP/TH (models 71G) RE (models 71G) FR/CF (models 71G) GR - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 251
) CZ (models 71G) AE (models 71G) RU (models 71G) TR (models 71G) HU (models 71G) PO (models 71G) GK (models 71G) 8973 Windows XP Home Recovery CDs 8973 Windows XP Pro Recovery CDs US/UK/AP/TH (models 73G 74G 75G) RE (models 73G 74G 75G) FR/CF (models 73G 74G 75G) GR (models 73G 74G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 252
TW (models) HK (models) KR (models) SL (models) RE (models) 8973 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models ) FI (models) PL (models) 246 Hardware Maintenance Manual FRU# 87H4420 87H4421 87H4422 87H4423 87H4424 87H4425 87H4426 87H4427 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 253
) HU (models) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 8973 Vista Business 32 Recovery DVDs FRU# 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 Chapter 10. FRU lists 247 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 254
Machine Type 8975 Item # 8975 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2. - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 255
(667MHz) DDR2 SDRAM (models CTO) 3 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO B1G) 4 DVD-ROM drive (16X/48X) (models CTO B1G) 4 DVD-ROM drive (16X/48X) (models CTO B1G) 4 DVD-ROM Drive (16x/48x) (models CTO B1G) 4 Combo 48 -32 -48 -16 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 256
for VISTA Models ONLY (models CTO 42G) 4 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO 42G) 5 Diskette drive, 3,5″, 1.44MB, 2Mode,(w/bezel) (models CTO) 5 Diskette drive, 3,5″, 1.44MB, 2Mode (models CTO) 6 Bezel assembly (all models) 7 Power switch/LED assembly (all - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 257
13 Power supply (230W) (models CTO B1G 41G) 13 Power supply (250W) (models CTO B1G 41G) 13 Power supply (220V/250W/ATX12V - China) (models CTO) 13 Power Supply 5281-7VW-ROHS, 280W, Standard (models CTO) 13 Power Supply 5281-7VW-ROHS, 280W, Standard (models CTO) 13 Power Supply 310W standard - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 258
Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO) Denver - ATI X300SE 128MB (models CTO) Dongle Cable - DMS59 to dual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 259
with DMS59 (models CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO ) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO) 8975 Power Cords Line - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 260
Power Line Cord - Thailand (models) Line Cord - Thailand (models) 8975 Windows XP Pro Recovery CDs US/UK/AP/TH (models B1G 41G 42G) RE (models B1G 41G ) Multilingual 2 (models B1G 41G 42G) 254 Hardware Maintenance Manual FRU# 41R3236 41R3237 41R3220 41R3221 41R3341 41R3175 41R3248 41R3249 41R3196 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 261
8975 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/ (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 8975 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP ( - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 262
) HU (models) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 8975 Vista Business 32 Recovery DVDs FRU# 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 256 Hardware Maintenance - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 263
Machine Type 8976 Item # 8976 FRUs 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO A1M B1V 21M 22V D1V D2M A2M A3M 23M 31M 32M) 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO) 2 Microprocessor, 3000+ Sempron AM2 (1.6 GHz processor, 62W) (models CTO A1M) 2 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 264
VISTA Models ONLY (models CTO A2M 23M 31M) 3 DVD-Recorder (Rambo 8)-NON/VISTA (models CTO A2M 23M 31M) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO ) 5 Hard disk drive, 80GB (7200RPM), Serial ATA (models CTO A1M B1V 21M 22V D1V - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 265
PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 8 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 9 System board, AMD Sys Planar for Vista and XP (models CTO A1M B1V 21M 22V D1V D2M A2M A3M 23M 31M 32M) 10 220W Small desktop power supply (non-smokeless) (models CTO A1M 21M D2M B1V 22V D1V - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 266
CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO ) 8976 Power Cords 260 Hardware Maintenance Manual FRU# 41R3184 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 267
8976 Power Cords Line Cord - Thailand (models) Line Cord - Thailand (models) 8976 Windows XP Pro Recovery CDs US/UK/AP/TH (models A1M 21M D2M A2M A3M 23M 31M 32M) Taiwan-TC (models B1V 22V D1V) 8976 Vista Home Basic 32 Recovery DVDs - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 268
Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO (models) SV (models) DK (models) NL (models) CZ (models) FI (models) PL (models) RU (models) 262 Hardware Maintenance Manual FRU# 87H4421 87H4422 87H4423 87H4424 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 269
TR (models) HU (models) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 8976 Vista Business 32 Recovery DVDs FRU# 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 1 Chapter 10. FRU lists 263 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 270
Machine Type 8979 Item # 8979 FRUs 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO A1M A2M A3M A4M B1V 21V 22M 23M 24M 25M D1V D2M D3M D4M D5M A5M A6M A7M A8M 31G 32G 33M 34M 26G 35G) 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO) 2 Microprocessor, 3000+ Sempron - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 271
D3M) 3 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO B1V 21V D1V) 4 DVD-ROM drive (16X/48X) (models CTO B1V 21V D1V) 4 DVD-ROM drive (16X/48X) (models CTO B1V 21V D1V) 4 DVD-ROM Drive (16x/48x) (models CTO B1V 21V D1V D8V) 4 Combo 48 -32 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 272
for Vista and XP (models CTO A1M A2M A3M A4M B1V 21V 22M 23M 24M 25M D1V D2M D3M D4M D5M A5M A6M A7M A8M 31G 32G 33M 34M 26G 35G 36G 27M 28M D6M D7 D8V) 12 Fan, Rear w/ grommets & Grill (all models) 13 Power supply (300W) (models CTO-A) 13 Power supply (230W) (models CTO A1M A2M - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 273
drive and optical signal (all models) Front system fan (all models) 4-pin PATA to 15-pin SATA power connector (all models) SATA cable, 457mm (models) Retainer, Card Y Y Y Y Y Y Y N N N N N Y Y 8979 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1M A2M A3M A4M 22M 23M 24M 25M - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 274
(Lenovo Preferred MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO Y Y Y 2 Y 2 Y 2 Y 2 Y 2 Y 2 Y 2 Y 2 Y 2 Y 268 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 275
31G 32G) Memory Card Reader Bracket (models CTO) Memory Card Reader Bezel (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) Speakers (2-piece) Lenovo Logo (models A2M A4M 23M 24M D2M D4M A6M A8M 33M) Speaker Power brick - ANZ - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 276
8979 Power Cords Line Cord - 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 8979 Windows XP Home Recovery CDs US/UK/AP/TH (models A2M A4M 23M 24M D2M D4M A6M A8M 32G 33M) FR/CF (models 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 270 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 277
8979 Windows XP Pro Recovery CDs US/UK/AP/TH (models A1M A3M 22M 25M D3M (models B1V 21V D1V) Multilingual 1 (models 31G 26G 35G) Multilingual 2 (models 31G 26G 35G) 8979 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP ( - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 278
SL (models) RE (models) 8979 Vista Home Basic 32 Recovery DVDs 8979 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models (models) SL (models) RE (models) 272 Hardware Maintenance Manual FRU# 87H4433 87H4434 87H4435 87H4436 87H4437 87H4438 87H4439 87H4440 87H4441 87H4442 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 279
Machine Type 8980 Item # 8980 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A1B A1H) 2 Microprocessor, - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 280
CTO) 3 DVD-ROM drive (16X/48X) (models CTO 73G 74G) 3 DVD-ROM drive (16X/48X) (models CTO 73G 74G) 3 DVD-ROM drive (16X/48X) (models CTO 73G 74G) 3 DVD-ROM Drive (16x/48x) (models CTO 73G 74G) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO Y Y Y Y Y Y Y 274 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 281
XP (models CTO A1B A1H D1A D1T D1Q D1B D1H 71G A2M A3M 31B 31H 32M 33M D2M D3M D4M D5M D6M D7M D8M D9M 73G 74G DAM DBM) Note: When ordering a new system board, you must also order a new retention module for the heat sink. 10 220W Small desktop power supply (non-smokeless) (models CTO - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 282
CTO) Shield, EMC, system board (all models) Shield, EMC, blank 5.25in. drive bay (all models) Shield, EMC, blank diskette drive ) Retention module, Intel (all models) 8980 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1H 276 Hardware Maintenance Manual FRU# 91P8835 41N5347 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 283
8980 Keyboards (Lenovo Preferred Pro fullsize, Black) Iceland (models 71G 73G 74G) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO D4M D6M D8M) L1 IEEE 1394 PCI Adapter (models CTO A2M - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 284
CTO) Internal USB Memory Card Reader (models CTO 32M D2M D4M D6M D8M) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) Speakers (2-piece) Lenovo Logo (models A2M 32M D2M D4M D6M D8M) Speaker Power Y Y Y Y 278 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 285
8980 Power Cords Line Cord - South Africa (models D1A 71G A2M A3M 32M 33M D2M D3M D4M D5M D2M D4M D6M D8M) Hong Kong-TC (models 31B) FRU# 42Y3597 41W7790 CRU Tier 1 1 RoHS? Y Y 8980 Windows XP Pro Recovery CDs US/UK/AP/TH (models A1H D1A D1T D1Q D1H 71G A3M 33M D3M D5M D7M D9M 73G 74G) FR/CF ( - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 286
Windows XP Pro Recovery CDs GK (models 71G 73G 74G) SL (models 71G 73G 74G) Hong Kong - TC (models A1B D1B) Multilingual 1 (models 71G 73G 74G) Multilingual 2 (models 71G 73G 74G) 8980 Vista Home Basic 32 Recovery DVDs IT (models) 280 Hardware Maintenance Manual FRU# 42Y3729 42Y3730 41W7762 42Y3645 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 287
) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 8980 Vista Business 32 Recovery DVDs FRU# 87H4482 87H4483 87H4484 87H4485 87H4486 87H4487 87H4488 87H4489 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 288
Machine Type 8982 Item # 8982 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 1 Heatsink for Intel processors (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 289
, EM64T M0 (models) 3 DVD-ROM drive (16X/48X) (models CTO 32V 71G 73G) 3 DVD-ROM drive (16X/48X) (models CTO 32V 71G 73G) 3 DVD-ROM drive (16X/48X) (models CTO 32V 71G 73G) 3 DVD-ROM Drive (16x/48x) (models CTO 32V 71G 73G) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO B1G 51A 51T 51B - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 290
G8M G8V ) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO B3M 34M 35M 36M D3M D4M D5M G2M G3M G4M D6M G6M G7M G8M G8V) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO ) 5 Hard disk drive, 80GB (7200RPM - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 291
Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 9 System board, Intel Sys Planar for Vista and XP (models CTO CPU issue and modify PCB solve Japan smokeless issue) ver1.2 matrix from 43C3504 & 43C3505 (models CTO 10 220W Small desktop power supply (non-smokeless) (models CTO A1A A1T B1G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 292
CTO) 1 drop IDE cable (all models) Shield, EMC, system board (all models) Shield, EMC, blank 5.25in. drive bay (all models) Shield, EMC, blank diskette drive Y Y Y Y Y Y Y Y Y Y Y 8982 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1A A1C A1H B1G 41A Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 293
8982 Keyboards (Lenovo Preferred Pro fullsize, Black) Hungarian (models B1G 71G 72G 8982 Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO B3M 36M D5M G4M) L1 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 294
Radeon X1300PRO 256MB 128bit (models CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO) FRU# 46R4158 42Y8165 41X2670 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 295
8982 Power Cords Line Cord - South Africa (models A1A B1G 41A 51A D1A G1A B1M B2M B3M 31H 36M D5M G4M) Hong Kong-TC (models D1B 31B) FRU# 42Y3597 41W7790 CRU Tier 1 1 RoHS? Y Y 8982 Windows XP Pro Recovery CDs US/UK/AP/TH (models A1H B1G B2M 33M 34M 35M D2M D3M D4M G2M G3M G5M 71G 72G 73G 74G) FR - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 296
8982 Windows XP Pro Recovery CDs HU (models B1G 71G 72G 73G HK (models) KR (models) SL (models) RE (models) 8982 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) 290 Hardware Maintenance Manual FRU# 42Y3727 42Y3723 42Y3726 42Y3729 42Y3730 41W7751 41W7757 41W7762 42Y3645 42Y3879 CRU Tier 1 1 1 1 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 297
GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 8982 Vista Business 32 Recovery DVDs FRU# 87H4477 87H4478 87H4479 87H4480 87H4481 87H4482 87H4483 87H4484 87H4485 87H4486 87H4487 87H4488 87H4489 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 298
Machine Type 8983 Item # 8983 FRUs 1 Heatsink for Intel CPUs (all models) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.93GHz 533MHz FSB 256KB L2 (models CTO) 2 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 299
B3M B4M 42M 43M 81M) 3 Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO 82M 83M) 4 DVD-ROM drive (16X/48X) (models CTO 75G) 4 DVD-ROM drive (16X/48X) (models CTO 75G) 4 DVD-ROM drive (16X/48X) (models CTO 75G) 4 DVD-ROM Drive (16x/48x) (models CTO 75G) FRU# 41T1714 41T1715 41T1704 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 300
Bezel assembly (all models) 7 Power switch/LED assembly (all models) 8 Speaker assembly, soldered terminals (all models) 9 Front audio/USB assembly (all models) 10 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO) 10 Hard disk drive, 80GB (7200RPM), Serial ATA (models CTO B1Q B1B B1H 51Q - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 301
B2Q B2C B2B B2H 41B 41H F2B F2H G1Q G1C) 13 Power Supply 5281-7VW-ROHS, 280W, Standard (models CTO) 13 Power Supply 5281-7VW-ROHS, 280W, Standard (models CTO) 13 Power Supply 310W standard only for Japan (models CTO) FRU# 41N8079 41N3489 41N3094 41N3127 41N3485 41N3479 41N3482 24R2596 CRU Tier - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 302
8983 Keyboards (Lenovo Preferred Pro CTO) ScrollPoint Optical Mouse (800DPI, USB) (models CTO) FRU# 41U3013 41U3030 41R0018 41U3019 CRU Tier 1 1 1 1 RoHS? Y Y Y Y 8983 Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) 296 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 303
LP / ATX with DMS59 (models CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO ) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) Speakers (2-piece) Lenovo Logo (models 82M) Speaker Power brick - ANZ (models 82M - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 304
8983 Power Cords Line Cord - Italy (models 73G 41B) FRU# 42Y3597 41W7790 CRU Tier 1 1 RoHS? Y Y 8983 Windows XP Pro Recovery CDs US/UK/AP/TH (models 51Q 51H 73G 74G B3M B4M 42M 43M 81M Y 42Y3552 1 Y 42Y3553 1 Y 42Y3555 1 Y 42Y3556 1 Y 42Y3718 1 Y 298 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 305
8983 Windows XP Pro Recovery CDs NO (models 73G 74G 75G 76G) NL (models 73G 74G models 51B) Multilingual 1 (models 73G 74G 75G 76G) Multilingual 2 (models 73G 74G 75G 76G) 8983 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 306
HK (models) KR (models) SL (models) RE (models) 8983 Vista Home Basic 32 Recovery DVDs 8983 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 300 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 307
Machine Type 8985 Item # 8985 FRUs 1 Heatsink for Intel CPUs (all models) 1 Heatsink for Intel CPUs (models CTO) 1 Heatsink for Intel CPUs (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A2B - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 308
CTO A3M 34M D4M G2M) 3 Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 3 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO N N 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 302 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 309
D3V E1V F2C 73G 74G 7DG) 4 DVD-ROM drive (16X/48X) (models CTO D2C 33V D3V E1V F2C 73G 74G 7DG) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO D1B D1H 71G 72G A3M 34M D4M G2M 75G 76G 78G 7AG) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO D1B D1H 71G 72G A3M 34M - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 310
drive, 250GB (7200RPM), Serial ATA (models CTO) 10 Hard disk drive, 500GB (7200RPM), Serial ATA (models CTO) 11 System board, Intel for Vista and XP (models CTO w/ grommets & Grill (all models) 13 Power supply (300W) (models CTO) 13 Power supply (230W) (models CTO 71G 72G A3M 33V 34M D3V D4M E1V - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 311
power connector (all models) Thermal grease kit (all models) Shield, 5.25 EMC (all models) Cable, Serial (all models) Shield, diskette drive EMC (all models) Cable, Diskette drive drive and optical signal (all models) Front system fan (all models) Retainer, Card 8985 Keyboards (Lenovo Preferred Pro - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 312
Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO) Denver - ATI X300SE 128MB (models CTO) Dongle Cable - DMS59 to dual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 313
with DMS59 (models CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO) FRU# 42Y8183 41X6398 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 314
8985 Power Cords Line Cord - Denmark (models 71G 72G (models 31B) FRU# 42Y3597 41W7790 CRU Tier 1 1 RoHS? Y Y 8985 Windows XP Pro Recovery CDs US/UK/AP/TH (models D1H 71G 72G A3M 34M D4M G2M 73G 74G 75G CRU Tier 1 RoHS? Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 308 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 315
8985 Windows XP Pro Recovery CDs NO (models 71G 72G 73G 74G 75G 76G 77G 78G 79G 7AG 7CG 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 8985 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 316
HK (models) KR (models) SL (models) RE (models) 8985 Vista Home Basic 32 Recovery DVDs 8985 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 310 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 317
Machine Type 8986 Item # 8986 FRUs 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO A1S A1P A1Y A2S A2P A2Y A3S A3P A3Y B1V 21K 21R 22K 22R 23V 24S 24P 24Y 25S 25P 25Y 26S 26P 26Y 31U - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 318
VISTA Models ONLY (models CTO) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO ) 5 Hard disk drive, 80GB (7200RPM), Serial ATA (models CTO A1S A1P A1Y A2S - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 319
drive, 3,5″, 1.44MB, 2-mode (models CTO A1S A1P A1Y A2S A2P A2Y B1V 23V 24S 24P 24Y 25S 25P 25Y D3V B2S B2P B2Y 33S 33P 33Y 35K 35R) 7 Front USB/Audio with bracket (all models) 8 Memory 37U 37F D4U D4F) 10 220W Small desktop power supply (non-smokeless) (models CTO 21K 21R 22K 22R 31U 31F 32U 32F - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 320
CTO) ScrollPoint Optical Mouse (800DPI, USB) (models CTO) FRU# 41U3013 41U3030 41R0018 41U3019 CRU Tier 1 1 1 1 RoHS? Y Y Y Y 8986 Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) FRU# 41R3378 CRU Tier 2 RoHS? Y 314 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 321
Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO 21K 21R 22K 22R) Denver - ATI X300SE 128MB (models CTO) Dongle Cable - DMS59 to dual VGA (models CTO) Dongle Cable - DMS59 to dual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 322
Power 41R3225 1 Y 43N9029 1 Y 43N9030 1 Y 8986 Windows XP Home Recovery CDs US/UK/AP/TH (models 21R 22R 35R) Korea CRU Tier 1 1 RoHS? Y Y 8986 Windows XP Pro Recovery CDs US/UK/AP/TH (models 31U 32U D1U Recovery DVDs US/UK/AP/TH (models) FRU# 87H4420 CRU Tier 1 316 Hardware - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 323
) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 8986 Vista Home Basic 32 Recovery DVDs 8986 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO (models) SV (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 324
TR (models) HU (models) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 8986 Vista Business 32 Recovery DVDs FRU# 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 1 318 Hardware Maintenance - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 325
Machine Type 8991 Item # 8991 FRUs 1 Heatsink for AMD Sempron & Athlon AM2 processors (all models) 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO) 2 Microprocessor, 3000+ Sempron AM2 (1.6 GHz processor, 62W) (models CTO A1U A1F A2U A2F A3S A3P A3Y A4S A4P A4Y A5S A5P A5Y) 2 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 326
CTO 23K 23R) 3 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO B1V 21V D4V) 4 DVD-ROM drive (16X/48X) (models CTO B1V 21V D4V) 4 DVD-ROM drive (16X/48X) (models CTO B1V 21V D4V) 4 DVD-ROM Drive (16x/48x) (models CTO B1V 21V D4V) 4 Combo Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 327
assembly (all models) 7 Power switch/LED assembly (all models) 8 Speaker assembly, soldered terminals (models CTO A1M A3M B1V 21V 22M 25M D1V D3M D5M) 9 Front audio/USB assembly (all models) 10 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO ) 10 Hard disk drive, 80GB (7200RPM), Serial - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 328
XP (models CTO grommets & Grill (all models) 13 Power supply (300W) (models CTO) 13 Power supply (230W) (models CTO A1U A1F A2U A2F A6U A6F A7U 38F 39U 39F 2BG 30G) 13 Power supply (250W) (models CTO A1U A1F A2U A2F A6U A6F (all models) Cable, hard disk drive and optical signal (all models) Front - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 329
8991 FRUs Retainer, Card Reader (all models) Front Fan AVC (all models) Optional HDD Bracket Assembly, without 4Pin cable (all models) Chassis assembly (all models) Retention module, AMD (all - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 330
41R0018 41U3019 CRU Tier 1 1 1 1 RoHS? Y Y Y Y 8991 Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO A2U A2F A7U A7F A7S A7P A7Y) L1 IEEE 1394 PCI Adapter - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 331
8991 Adapters and miscellaneous FRUs Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) FRU# 41A5247 41A5246 41A5334 CRU Tier 2 2 2 RoHS? Y Y Y 8991 Power Cords Line Cord - US (models A1U A1F A2U A2F A3S A4S A5S A6U A6F A6S A7U A7F - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 332
8991 Power Cords Line Cord - India (models) Line Cord - India (models) Line 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y 8991 Windows XP Home Recovery CDs US/UK/AP/TH (models 22R 23R 2AR 37G) FR/CF (models 37G) GR (models 37G) IT (models 37G RoHS? Y 42Y3550 1 Y 326 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 333
8991 Windows XP Pro Recovery CDs GR (models 36G 2BG 30G) IT (models 36G 2BG 30G models B1V 21V D4V) Multilingual 1 (models 36G 2BG 30G) Multilingual 2 (models 36G 2BG 30G) 8991 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 334
) SL (models) RE (models) 8991 Vista Home Basic 32 Recovery DVDs 8991 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models (models) SL (models) RE (models) 328 Hardware Maintenance Manual FRU# 87H4434 87H4435 87H4436 87H4437 87H4438 87H4439 87H4440 87H4441 87H4442 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 335
Machine Type 8992 Item # 8992 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A1S A1D A1Y A1B A1H A2J A3J A4J - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 336
DVD-ROM drive (16X/48X) (models CTO 73G 74G J2S J2P J2Y J3S J3P J3Y J4S J4P J4Y) 3 DVD-ROM Drive (16x/48x) (models CTO 73G 74G J2S J2P J2Y J3S J3P J3Y J4S J4P J4Y) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 330 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 337
2AJ 2BJ DCJ DDJ) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO 81B 81H 81V G1B G1H 71G ACJ ADJ BCJ BDJ 2AJ 2BJ DCJ DDJ) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO ) 5 Hard disk drive, 80GB (7200RPM - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 338
74G 75G 76G) 6 Diskette drive, 3,5″, 1.44MB, 2-mode (models CTO A1S A1D A1Y A1B A1H B1S /Audio with bracket (all models) 8 Memory module, 512 MB PC2-4200 (533MHz) DDR2 SDRAM (models CTO A2J for the heat sink. 10 220W Small desktop power supply (non-smokeless) (models CTO A1S A1D A1Y B1S B1Y 51S 51P - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 339
(models CTO) Shield, EMC, system board (all models) Shield, EMC, blank 5.25in. drive bay (all models) Shield, EMC, blank diskette drive bay ( ) Foot stand (all models) Retention module, Intel (all models) 8992 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models B1H 52C 52H 53R 54R 55R - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 340
1 1 1 RoHS? Y Y Y Y 8992 Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO 55K 55R 56K 56R ) Denver - ATI X300SE 128MB - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 341
with DMS59 (models) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) FRU# 42Y8181 41X6398 42Y8183 41X6398 41X2668 41X2667 41X2669 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 342
8992 Power Cords Line Cord - Switzerland ( FRU# 42Y3597 41W7773 CRU Tier 1 1 RoHS? Y Y 8992 Windows XP Pro Recovery CDs US/UK/AP/TH (models A1H 53H 81H D1H G1H 71G 73G 1 Y 42Y3556 1 Y 42Y3720 1 Y 42Y3724 1 Y 42Y3555 1 Y 42Y3721 1 Y 42Y3718 1 Y 336 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 343
8992 Windows XP Pro Recovery CDs NO (models 71G 73G 74G) PL (models 71G 73G 74G) PO (models 71G 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 8992 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 344
HK (models) KR (models) SL (models) RE (models) 8992 Vista Home Basic 32 Recovery DVDs 8992 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 338 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 345
Machine Type 8994 Item # 8994 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A1S A1D A1Y A2J A3J A4J A5J A6J - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 346
DVD-ROM drive (16X/48X) (models CTO) 3 DVD-ROM drive (16X/48X) (models CTO) 3 DVD-ROM drive (16X/48X) (models CTO) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO A4J N N N N N N N N N N N N 2 2 2 2 2 2 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 340 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 347
3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW --NON/VISTA (models CTO A4J DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO ACJ ADJ D4J D5J D8U D8F G1U G1F G3B G3H BCJ BDJ 2BJ 2CJ H2U H2F DMU DMF H4U H4F) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 348
H1C H1V 73G 74G 75G 76G) 6 Diskette drive, 3,5″, 1.44MB, 2-mode (models CTO A1S A1D A1Y A2J A3J A4J A5J A6J Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 8 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 9 System board, Intel Sys Planar for Vista and XP (models CTO - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 349
board, 946GZ (modify PCB solve Conroe CPU issue and modify PCB solve Japan smokeless issue) ver1.2 matrix from 43C3504 & 43C3505 (models CTO A1S A1D A1Y A2J A3J A4J J4P J4Y J5S J5P J5Y 78G 79G) 10 220W Small desktop power supply (non-smokeless) (models CTO A1S A1D A1Y B1S B1Y 51S 51P 51Y 53K 53R - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 350
10 220 Watt Power Supply - China (models CTO-A B1B B1H 52C drive bracket asm (plastic and grommets) (all models) Hard disk drive Y Y Y Y Y Y Y Y Y Y Y Y 8994 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1A A1H B1A B1H 41A 52C Manual CRU Tier 1 RoHS? Y 1 Y 1 Y 1 Y 1 Y 1 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 351
8994 Keyboards (Lenovo Preferred Pro fullsize, Black) Hong Kong/Taiwan (models A1B B1B 52B 400DPI, USB) (all models) PS/2 Three Button ball mouse (models CTO) ScrollPoint Optical Mouse (800DPI, USB) (models CTO) FRU# 41A5046 41A5047 41A5048 41A5049 41A5050 41A5051 41A5052 41A5053 41A5054 41A5055 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 352
CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO Y 2 Y 8994 Power Cords Line Cord - Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 353
8994 Power Cords Line Cord - Taiwan (models 61V) Line Cord - 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 41R3249 1 Y 41R3196 1 Y 41R3197 1 Y 41R3224 1 Y 41R3225 1 Y 43N9029 1 Y 43N9030 1 Y 8994 Windows XP Pro Recovery CDs US/UK/AP/TH (models B1H 52H 53R 54R 55R 61H D7U D8U G1U - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 354
Windows XP Pro Recovery CDs 1 Y 41W7762 1 Y 41W7746 1 Y 42Y3645 1 Y 42Y3879 1 Y 8994 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) ) PO (models) 348 Hardware Maintenance Manual FRU# 87H4420 87H4421 87H4422 87H4423 87H4424 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 355
CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 8994 Vista Home Basic 32 Recovery DVDs 8994 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO (models) SV (models) DK (models) - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 356
Machine Type 8995 Item # 8995 FRUs 1 Heatsink for Intel CPUs (all models) 1 Heatsink for Intel CPUs (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A1S A1D A1Y A1B A1H) 2 Microprocessor, - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 357
module, 512 MB PC2-5300 (667MHz) DDR2 SDRAM (models CTO 56K 56R 57K 57R) 3 Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO 53C F2C H1C 71G) 4 DVD-ROM drive (16X/48X) (models CTO 53C F2C H1C 71G) FRU# 41T1713 41T1714 41T1715 41T1704 41X2413 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 358
FRUs 4 DVD-ROM drive (16X/48X) (models CTO 53C F2C H1C 71G) 4 DVD-ROM Drive (16x/48x) (models CTO 53C F2C H1C 71G J1S J1P J1Y) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO 54S 54Y 56K 56R 57K 57R D1B D1H D3C 42S 42Y 72G) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO 54S 54Y - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 359
XP (models CTO & Grill (all models) 13 Power supply (300W) (models CTO) 13 Power supply (230W) (models CTO A1S A1D A1Y B1S B1Y 54S drive and optical signal (all models) Front fan assembly (all models) 4-pin PATA to 15-pin SATA power connector (all models) SATA cable, 457 mm (models) Retainer, Card - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 360
8995 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1H 53C 56R Wheel Mouse (400DPI, USB) (all models) Optical Wheel Mouse (400DPI, USB) (all models) 354 Hardware Maintenance Manual FRU# 41A5039 CRU Tier 1 RoHS? Y 41A5040 1 Y 41A5041 1 Y 41A5042 1 Y 41A5043 1 Y - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 361
CTO) Internal USB Memory Card Reader (models CTO 56K 56R 57K 57R D3C) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO Y Y Y Y Y 8995 Power Cords Line Cord - US (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 362
8995 Power Cords Line Cord - UK, Ireland, FRU# 42Y3597 41W7773 CRU Tier 1 1 RoHS? Y Y 8995 Windows XP Pro Recovery CDs US/UK/AP/TH (models A1H 81H D1H G1H 31H 71G 72G) 71G 72G) 356 Hardware Maintenance Manual FRU# 42Y3549 42Y3550 42Y3551 42Y3553 42Y3552 CRU Tier 1 1 1 1 1 RoHS? Y Y Y Y - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 363
8995 Windows XP Pro Recovery CDs AE (models 71G 72G) SV (models 71G 72G) HE (models 71G A1B 81B D1B G1B 31B) Multilingual 1 (models 71G 72G) Multilingual 2 (models 71G 72G) 8995 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 364
) HK (models) KR (models) SL (models) RE (models) 8995 Vista Home Basic 32 Recovery DVDs 8995 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR ( 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 358 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 365
Machine Type 9265 Item # 9265 FRUs 1 Heatsink for Intel CPUs (all models) 1 Heatsink (all models) 1 Heatsink for Intel CPUs (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A1S A1P A1D A1Y) 2 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 366
H3Y 7AG 73G 74G 75G 76G 77G 78G 79G) 3 Memory module, 1 GB PC2-4200 (533MHz) DDR2 SDRAM (models CTO 7CG) FRU# 41T1712 41T1713 41T1714 41T1715 41T1704 41X7775 41X2413 N N N N N N N N N N N N N N N N N N N N N 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 360 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 367
H1R F7K F7R KBH KCH) 3 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO 73G) 4 DVD-ROM drive (16X/48X) (models CTO 73G) 4 DVD-ROM drive (16X/48X) (models CTO 73G) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO 52S 52P 52Y 54K 54R 55K - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 368
Power switch/LED assembly (all models) 8 Speaker assembly, soldered terminals (all models) 9 Front audio/USB assembly (all models) 10 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO) 10 Hard disk drive, 80GB (7200RPM), Serial ATA (models CTO XP, Japan (models CTO Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 369
(modify PCB solve Conroe CPU issue and modify PCB solve Japan smokeless issue) ver1.2 matrix from 43C3504 & 43C3505 (models CTO A1S A1P A1D A1Y B1S , Rear w/ grommets & Grill (all models) 13 Power supply (300W) (models CTO) 13 Power supply (230W) (models CTO A1S A1P A1D A1Y B1S B1P B1Y 52S 52P 52Y - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 370
drive and optical signal (all models) Front system fan (all models) 4-pin PATA to 15-pin SATA power connector (all models) Retainer, Card RM Asm, Intel (all models) 9265 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models B1H 7CG) 364 Hardware Maintenance Manual FRU# 41N8078 41A7182 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 371
9265 Keyboards (Lenovo Preferred Pro fullsize, Black) Iceland (models miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO G1U G1F G2B - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 372
CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO D4C F6C) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) Speakers (2-piece) Lenovo Logo (models D4C F6C) Speaker Power Y 1 Y 366 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 373
9265 Power Cords Line Cord - Indonesia, Laos, Cambodia, and Vietnam 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9265 Windows XP Home Recovery CDs Simplified Chinese (models F6C) FRU# 41W7778 CRU Tier 1 RoHS? Y 9265 Windows XP Pro Recovery CDs US/UK/AP/TH (models B1H 53H 54R 55R 61H - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 374
Windows XP Pro Recovery CDs 7AG 73G 74G 75G 76G 77G 78G 79G 7CG) 9265 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA ( models) HU (models) GK (models) 368 Hardware Maintenance Manual FRU# 42Y3720 42Y3724 42Y3555 42Y3721 42Y3718 42Y3719 42Y3722 42Y3728 42Y3725 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 375
PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9265 Vista Home Basic 32 Recovery DVDs 9265 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models KBF KCF) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO (models) SV (models) - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 376
Type 9266 Item # 9266 FRUs 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO CTO) 2 Microprocessor, 3000+ Sempron AM2 (1.6 GHz processor, 62W) (models CTO CTO B5K B5R) 2 Microprocessor, 3500+ Athlon64 AM2 (2.2 GHz processor, 62W) (models CTO , 62W) (models CTO) FRU# 41N8249 41R4802 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 377
for VISTA Models ONLY (models CTO BFJ 3KJ ) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO BFJ 3KJ ) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO) 5 Hard disk drive, 80GB (7200RPM), Serial ATA (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 378
drive, 3,5″, 1.44MB, 2-mode, (w/bezel) (models CTO A6S A6P A6Y A7S A7P A7Y 26S 26P 26Y 27S 27P 27Y B7S B7P B7Y 35S 35P 35Y) 7 Front USB/Audio with bracket (all models) 8 Memory 3KJ 3AK 3BS 3BP 3BY ) 10 220W Small desktop power supply (non-smokeless) (models CTO A1G A2K A2R A3K A3R A4U A4F A8K A8R - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 379
CTO) 1 drop IDE cable (all models) Shield, EMC, system board (all models) Shield, EMC, blank 5.25in. drive bay (all models) Shield, EMC, blank diskette drive Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9266 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1G A2R A3R A4U A8R ACQ B1R B2R B3R - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 380
Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO) Denver - ATI X300SE 128MB (models CTO) Dongle Cable - DMS59 to dual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 381
CTO) Internal USB Memory Card Reader (models CTO A1G 21G B6U) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO) FRU# 41X2668 41X2667 41X2669 41X2670 41A5247 41A5246 46R4158 42Y8159 41D1934 41A5334 39J9334 CRU Tier 2 2 2 2 2 2 2 2 2 2 2 RoHS? Y Y Y Y Y Y Y Y Y Y Y 9266 Power - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 382
Power Cords 40Y3597 40Y3602 40Y3600 41W7773 CRU Tier 1 1 1 1 RoHS? Y Y Y Y 9266 Windows XP Pro Recovery CDs US/UK/AP/TH (models A1G A4U 21G 22Q 32U D1U ADG B6U 29G 36U 37U 376 Hardware Maintenance Manual FRU# 42Y3549 42Y3550 42Y3551 42Y3553 42Y3554 CRU Tier 1 RoHS? Y 1 Y 1 Y 1 Y 1 Y - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 383
9266 Windows XP Pro Recovery CDs SP/LA (models A1G A7S A7Y A9S A9Y 21G 26S 21G ADG 29G) Multilingual 1 (models A1G 21G ADG 29G) Multilingual 2 (models A1G 21G ADG 29G) 9266 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP ( - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 384
TW (models) HK (models) KR (models) SL (models) RE (models) 9266 Vista Home Basic 32 Recovery DVDs 9266 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 378 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 385
Machine Type 9269 Item # 9269 FRUs 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO A1K A1R D5R) 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO) 2 Microprocessor, 3000+ Sempron AM2 (1.6 GHz processor, 62W) (models CTO A1K A1R A2K A2R A3U A3F A4S A4P A4Y A5S A5P A5Y - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 386
D5K D5R) 3 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO B1G B8G 37U D4U D4F) 4 DVD-ROM drive (16X/48X) (models CTO B1G B8G 37U D4U D4F) 4 DVD-ROM drive (16X/48X) (models CTO B1G B8G 37U D4U D4F) 4 DVD-ROM Drive (16x/48x) (models CTO B1G B8G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 387
assembly (all models) 7 Power switch/LED assembly (all models) 8 Speaker assembly, soldered terminals (models CTO A1M A3M B1V 21V 22M 25M D1V D3M D5M) 9 Front audio/USB assembly (all models) 10 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO ) 10 Hard disk drive, 80GB (7200RPM), Serial - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 388
Vista and XP (models CTO A1K A1R w/ grommets & Grill (all models) 13 Power supply (300W) (models CTO) 13 Power supply (230W) (models CTO A1K A1R A2K A2R A3U A3F A7K A7R B1G Cable, Serial (all models) Shield, diskette drive EMC (all models) Cable, Diskette drive (RoHs) (all models) Cover, left side - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 389
, Card Reader (all models) Front Fan AVC (all models) Optional HDD Bracket Assembly, without 4Pin cable (all models) Chassis assembly (all models) Retention module, AMD (all models) FRU# 41R2913 41R4791 41R6106 41R2533 41R2507 CRU Tier 1 1 1 1 N RoHS? N N N N Y 9269 Keyboards (Lenovo Preferred - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 390
Lenovo CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO B1G 33G) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 391
9269 Power Cords Line Cord - US (models A3U A3F A4S A5S A6S A8S A9S 25S 27S 28S 31U 31F 31S 32S D1U D1F D1S D2S B6U B7S - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 392
42Y3597 42Y3602 42Y3600 41W7773 CRU Tier 1 1 1 1 RoHS? Y Y Y Y 9269 Windows XP Pro Recovery CDs US/UK/AP/TH (models A3U B1G 26Q 31U 33G D1U B6U B8G 29G 36U ) SL (models B1G 33G B8G 29G) 386 Hardware Maintenance Manual FRU# 42Y3549 42Y3550 42Y3551 42Y3553 42Y3554 42Y3552 42Y3556 42Y3720 42Y3724 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 393
Windows XP Pro Recovery CDs Multilingual 1 (models B1G 33G B8G 29G) Multilingual 2 (models B1G 33G B8G 29G) 9269 Vista Home Basic 32 Recovery DVDs HK (models) KR (models) SL (models) RE (models) 9269 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 394
(models) HU (models) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9269 Vista Business 32 Recovery DVDs FRU# 87H4485 87H4486 87H4487 87H4488 87H4489 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 395
Machine Type 9276 Item # 9276 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A1K A1R A2J A3J A4J A5J A6J A7J - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 396
DVD-ROM drive (16X/48X) (models CTO) 3 DVD-ROM drive (16X/48X) (models CTO) 3 DVD-ROM drive (16X/48X) (models CTO) 3 DVD-ROM Drive (16x/48x) (models CTO) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO ? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 390 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 397
VISTA Models ONLY (models CTO) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO) 5 Hard disk drive, 80GB (7200RPM), Serial ATA (models CTO B1S B1Y A1K A1R - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 398
CTO) ScrollPoint Optical Mouse (800DPI, USB) (models CTO) FRU# 41U3013 41U3030 41R0018 41U3019 CRU Tier 1 1 1 1 RoHS? Y Y Y Y 9276 Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) FRU# 41R3378 CRU Tier 2 RoHS? Y 392 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 399
Radeon X1300PRO 256MB 128bit (models CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO) FRU# 41R3376 29R9729 41D2781 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 400
Power Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9276 Windows XP Home Recovery CDs US/UK/AP/TH (models A1R G1R G2R) Korea (models A1K G1K G2K) 1 RoHS? Y Y 9276 Windows XP Pro Recovery CDs SP/LA (models B1S B1Y RoHS? Y Y 9276 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 401
) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9276 Vista Home Basic 32 Recovery DVDs 9276 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO (models) SV (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 402
PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9276 Vista Business 32 Recovery DVDs FRU# 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 396 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 403
Machine Type 9277 Item # 9277 FRUs 1 Heatsink for Intel CPUs (all models) 1 Heatsink for Intel CPUs (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A1Q) 2 Microprocessor, Celeron D 2.93GHz - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 404
(models CTO) 3 Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO G1K G1R) 4 DVD-ROM drive (16X/48X) (models CTO B1G 41G B3G 22G D1G F2G) 4 DVD-ROM drive (16X/48X) (models CTO B1G 41G B3G 22G D1G F2G) 4 DVD-ROM drive (16X/48X) (models CTO B1G 41G B3G 22G D1G F2G) 4 DVD-ROM Drive (16x - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 405
and XP (models CTO A1Q B1G B2S B2Y 41G 51Q B3G 21S 21Y 22G D1G D2S D2Y F2G G1K G1R G2K) Note: When ordering a new system board, you must also order a new retention module for the heat sink. 12 Fan, Rear w/ grommets & Grill (all models) 13 Power supply (300W) (models CTO) 13 Power supply (230W - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 406
Power Supply 310W standard only for Japan (models CTO) FRU# 41N3479 41N3482 24R2596 CRU Tier 2 2 2 RoHS? Y Y Y The FRUs listed in the following tables are not illustrated. 9277 FRUs Thermal grease kit (all models) Shield, 5.25 EMC (all models) Cable, Serial (all models) Shield, diskette drive - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 407
9277 Keyboards (Lenovo Preferred Pro fullsize, Black) Hebrew (models MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO) Denver - ATI X300SE 128MB (models CTO - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 408
(models) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO) FRU# 41X2667 41X2669 42Y8165 41X2670 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 409
9277 Power Cords Line Cord - Israel (models B1G 41G B3G 22G D1G F2G) Line ) Line Cord - Thailand (models) Line Cord - Thailand (models) 9277 Windows XP Home Recovery CDs US/UK/AP/TH (models G1R) Korea (models G1K) 9277 Windows XP Pro Recovery CDs US/UK/AP/TH (models B1G 41G 51Q B3G 22G D1G F2G) FR - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 410
Windows XP Pro Recovery CDs GK (models B1G 41G B3G 22G D1G F2G) SL (models B1G 41G B3G 22G D1G F2G) Multilingual 1 (models B1G 41G B3G 22G D1G F2G) Multilingual 2 (models B1G 41G B3G 22G D1G F2G) 9277 Vista Home Basic 32 Recovery DVDs models) 404 Hardware Maintenance Manual FRU# 42Y3729 42Y3730 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 411
) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9277 Vista Business 32 Recovery DVDs FRU# 87H4483 87H4484 87H4485 87H4486 87H4487 87H4488 87H4489 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 412
Machine Type 9278 Item # 9278 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 1 Heatsink for Intel processors (all models) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 413
-2M, LGA, EM64T M0 (models) 3 DVD-ROM drive (16X/48X) (models CTO B2G D3G F2G F2C F2B F2H) 3 DVD-ROM drive (16X/48X) (models CTO B2G D3G F2G F2C F2B F2H) 3 DVD-ROM drive (16X/48X) (models CTO B2G D3G F2G F2C F2B F2H) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO D1Q D2A D2T D2C D2B D2H - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 414
2BJ 2CJ DDJ DEJ) 4 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO ACJ ADJ BDJ BEJ 2BJ 2CJ DDJ DEJ) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO ) 5 Hard disk drive, 80GB (7200RPM), Serial ATA (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 415
DDJ DEJ 91A 91T) 6 Diskette drive, 3,5″, 1.44MB, 2-mode (models CTO A2A A2T A2B A2H B1S B1P USB/Audio with bracket (all models) 8 Memory module, 512 MB PC2-4200 (533MHz) DDR2 SDRAM (models CTO B2G D2A board, Intel Sys Planar Japan for Vista and XP (models CTO A1Q A2A A2T A2B A2H B1S B1P B1Y B2G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 416
board, 946GZ (modify PCB solve Conroe CPU issue and modify PCB solve Japan smokeless issue) ver1.2 matrix from 43C3504 & 43C3505 (models CTO A1Q A2A A2T A2B A2H B1S DJH F3K H6A H6V H6K H8B H8H) 10 220W Small desktop power supply (non-smokeless) (models CTO A2A A2T B1S B1P B1Y B2G 41A 41T D2A D2T - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 417
CTO) Shield, EMC, system board (all models) Shield, EMC, blank 5.25in. drive bay (all models) Shield, EMC, blank diskette drive bay N N N RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9278 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1Q A2A A2H B2G 41A 51Q D1Q D2A D2C - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 418
Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO) Denver - ATI X300SE 128MB (models CTO) Dongle Cable - DMS59 to dual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 419
with DMS59 (models CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO) FRU# 41X6398 42Y8183 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 420
9278 Power Cords Line Cord - Indonesia, Laos, H2K H3K H4K H5K) FRU# 42Y3597 41W7773 CRU Tier 1 1 RoHS? Y Y 9278 Windows XP Pro Recovery CDs US/UK/AP/TH (models A1Q A2A A2T A2H B2G 41A 41T 51Q D1Q D2A D2T 1 RoHS? Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 414 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 421
9278 Windows XP Pro Recovery CDs SV (models B2G D3G F2G) HE (models B2G D3G F2G) FI (models 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9278 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 422
(models) HK (models) KR (models) SL (models) RE (models) 9278 Vista Home Basic 32 Recovery DVDs 9278 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 416 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 423
Machine Type 9279 Item # 9279 FRUs 1 Heatsink for Intel CPUs (all models) 1 Heatsink for Intel CPUs (models CTO) 1 Heatsink for Intel CPUs (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A1Q - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 424
Memory module, 1 GB PC2-4200 (533MHz) DDR2 SDRAM (models CTO) 3 Memory module, 2GB PC2-4200 (533MHz) DDR2 SDRAM (models CTO) 3 Memory module, 512 MB PC2-5300 (667MHz) DDR2 SDRAM (models CTO N N N N N 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 418 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 425
module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO H3K H3R) 3 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO A3C A4A A4T B2G 52C D1G F3G F3B F3H F4C H1C) 4 DVD-ROM drive (16X/48X) (models CTO A3C A4A A4T B2G 52C D1G F3G F3B F3H F4C H1C - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 426
91A 91T F3G F3B F3H F4C H1C H2K H2R H3K H3R F6B F6H H4K) 12 Fan, Rear w/ grommets & Grill (all models) 13 Power supply (300W) (models CTO) 13 Power supply (230W) (models CTO A2A A2T A4A A4T B1S B1P B1Y B2G 41A 41T D1G D2A D2T G1A G1T 22S 22P 22Y D4S D4P D4Y 91A 91T - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 427
H2K H2R H3K H3R) 13 Power supply (220V/250W/ATX12V - China) (models CTO A1Q A2B A2H A3C 51Q 52C D3Q 21B 21H F3B F3H F4C H1C) 13 Power Supply 5281-7VW-ROHS, 280W, Standard (models CTO) 13 Power Supply 5281-7VW-ROHS, 280W, Standard (models CTO) 13 Power Supply 310W standard only for Japan (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 428
9279 Keyboards (Lenovo Preferred Pro fullsize, Black) Czech (models B2G D1G Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) 422 Hardware Maintenance Manual FRU# 41R3378 41R3376 CRU Tier - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 429
with DMS59 (models CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) DVI-I card,FH(Casper) (models CTO) BTL external speaker (models CTO) FRU# 29R9729 41D2781 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 430
9279 Power Cords Line Cord - Indonesia, ) FRU# 42Y3597 41W7773 CRU Tier 1 1 RoHS? Y Y 9279 Windows XP Pro Recovery CDs US/UK/AP/TH (models A2A A2T A2H B2G 41A 41T 51Q Y 42Y3554 1 Y 42Y3552 1 Y 42Y3556 1 Y 42Y3720 1 Y 42Y3724 1 Y 42Y3555 1 Y 424 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 431
9279 Windows XP Pro Recovery CDs HE (models B2G D1G F3G) FI (models B2G D1G F3G) A2B 21B F3B) Multilingual 1 (models B2G D1G F3G) Multilingual 2 (models B2G D1G F3G) 9279 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 432
KR (models) SL (models) RE (models) 9279 Vista Home Basic 32 Recovery DVDs 9279 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR ( 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 426 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 433
Machine Type 9282 Item # 9282 FRUs 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO A1G A2S A2P A2Y 21G 22S 22P 22Y 23S 23P 23Y A3G 24G) 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO) 2 Microprocessor, 3000+ Sempron AM2 (1.6 GHz processor, 62W) (models CTO A1G A2S - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 434
VISTA Models ONLY (models CTO) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO) 5 Hard disk drive, 80GB (7200RPM), Serial ATA (models CTO A1G A2S A2P A2Y - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 435
) DDR2 SDRAM (models CTO) 8 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 9 System board, AMD Sys Planar for Vista and XP (models CTO A1G A2S A2P A2Y 21G 22S 22P 22Y 23S 23P 23Y A3G 24G 25S 25P 25Y 26G) 10 220W Small desktop power supply (non-smokeless) (models CTO A1G 21G A2S A2P - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 436
9282 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1G A2R (400DPI, USB) (all models) PS/2 Three Button ball mouse (models CTO) ScrollPoint Optical Mouse (800DPI, USB) (models CTO) 430 Hardware Maintenance Manual FRU# 41U3013 41U3030 41R0018 41U3019 CRU Tier 1 1 1 1 RoHS? Y - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 437
CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO Y Y Y Y Y Y Y Y Y 9282 Power Cords Line Cord - US (models A2S 22S 23S) - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 438
9282 Power Cords Line Cord - 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9282 Windows XP Pro Recovery CDs US/UK/AP/TH (models A1G 21G A3G 24G) FR/CF (models A1G 21G A3G 24G) GR 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 432 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 439
9282 Windows XP Pro Recovery CDs RU (models A1G 21G A3G 24G) RE (models A1G 21G A3G 24G) Multilingual 1 (models A1G 21G A3G 24G) Multilingual 2 (models A1G 21G A3G 24G) 9282 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 440
GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9282 Vista Business 32 Recovery DVDs FRU# 87H4478 87H4479 87H4480 87H4481 87H4482 87H4483 87H4484 87H4485 87H4486 87H4487 87H4488 87H4489 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 441
Machine Type 9283 Item # 9283 FRUs 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO A1S A1P A1Y A2S A2P A2Y A3Q B1G B2G 21S 21P 21Y 22S 22P 22Y 23S 23P 23Y 24Q 25Q 26Q 31G D1Q D2Q B3S - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 442
(models CTO) 3 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO B1G B2G 31G B4G 27G) 4 DVD-ROM drive (16X/48X) (models CTO B1G B2G 31G B4G 27G) 4 DVD-ROM drive (16X/48X) (models CTO B1G B2G 31G B4G 27G) 4 DVD-ROM Drive (16x/48x) (models CTO B1G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 443
and XP (models CTO A1S A1P A1Y A2S A2P A2Y A3Q B1G B2G 21S 21P 21Y 22S 22P 22Y 23S 23P 23Y 24Q 25Q 26Q 31G D1Q D2Q B3S B3P B3Y B4G 27G 32S 32P 32Y 33S 33P 33Y 28S 28P 28Y D3L D3Q) 12 Fan, Rear w/ grommets & Grill (all models) 13 Power supply - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 444
drive and optical signal (all models) Front system fan (all models) 4-pin PATA to 15-pin SATA power connector (all models) SATA cable, 457 mm (models) Retainer, Card Y Y Y N N N N Y Y Y 9283 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A3Q B1G B2G 24Q Manual CRU Tier 1 1 1 1 1 1 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 445
9283 Keyboards (Lenovo Preferred Pro fullsize, Black) CTO) Internal USB Memory Card Reader (models CTO B2G 31G D2Q) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) DVI-I card,FH(Casper) (models CTO) BTL external speaker (models CTO - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 446
9283 Power Cords Line Cord - US (models A1S A2S 21S 22S 41R3233 41R3208 41R3209 41R3212 41R3213 41R3228 41R3229 41R3236 41R3237 41R3220 41R3221 41R3341 41R3175 41R3248 41R3249 41R3196 41R3197 41R3224 41R3225 43N9029 440 Hardware Maintenance Manual CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 447
Power Cords Line Cord - Thailand (models) 9283 Windows XP Home Recovery CDs BR (models A1P) SP/LA (models A1S A1Y) 9283 Windows XP Pro Recovery CDs B4G 27G) Multilingual 2 (models B2G 31G B4G 27G) 9283 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 448
Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO (models) SV (models) DK (models) NL (models) CZ (models) FI (models) PL (models) RU (models) TR (models) HU (models) GK (models) PO (models) CS (models) 442 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 449
TW (models) HK (models) KR (models) SL (models) RE (models) 9283 Vista Business 32 Recovery DVDs FRU# 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 Chapter 10. FRU lists 443 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 450
Machine Type 9286 Item # 9286 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2. - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 451
21G D1G F2G) 3 DVD-ROM Drive (16x/48x) (models CTO B1G 41G B2G 21G D1G F2G) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW --NON - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 452
MB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 8 Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 9 System board, SiS 662 Gig E Sys Planar for Vista and XP (models CTO B1G 41G B2G 21G D1G F2G ) 10 220W Small desktop power supply (non-smokeless) (models CTO B1G 41G B2G 21G D1G F2G) 10 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 453
low profile I/O, 250mm, Rohs (all models) Foot stand (all models) Retention module, Intel (all models) Bezel kit, Rocky S3 (all models) 9286 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models B1G 41G B2G 21G D1G F2G) Arabic (models B1G 41G B2G 21G D1G F2G) Arabic/French (models B1G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 454
Lenovo CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 448 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 455
9286 Power Cords Line Cord - US (models) Line Cord - US (models) Line Cord - China (models) Line Cord - China (models) Line Cord - Brazil (models) Line Cord - Brazil (models) - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 456
Windows XP Pro Recovery CDs Multilingual 2 (models B1G 41G B2G 21G D1G F2G) 9286 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA ( PL (models) RU (models) 450 Hardware Maintenance Manual FRU# 42Y3549 42Y3550 42Y3551 42Y3553 42Y3552 42Y3556 42Y3720 42Y3724 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 457
) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9286 Vista Home Basic 32 Recovery DVDs 9286 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO (models) SV (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 458
Machine Type 9287 Item # 9287 FRUs 1 Heatsink for Intel CPUs (all models) 1 Heatsink for Intel CPUs (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.93GHz 533MHz - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 459
) DDR2 SDRAM (models CTO) 3 Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 CD-ROM drive 48X - Black w/o jack & vol (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO B1G 41G B2G 21G D1G F2G) 4 DVD-ROM drive (16X/48X) (models CTO B1G 41G B2G 21G D1G F2G) 4 DVD-ROM drive (16X/48X - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 460
drive, 500GB (7200RPM), Serial ATA (models CTO) 11 System board, SiS 662 Gig E for Vista and XP (models CTO B1G 41G B2G 21G D1G F2G) Note: When ordering a new system board, you must also order a new retention module for the heat sink. 12 Fan, Rear w/ grommets & Grill (all models) 13 Power supply - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 461
Shield (models) Kit, Miscellaneous hardware (all models) Cable, hard disk drive and optical signal (all models) Front system fan (all models) 4-pin PATA to 15-pin SATA power connector (all models) SATA cable, 457 mm (models) Retainer, Card Reader (all models) Front Fan AVC (all models) Optional HDD - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 462
9287 Keyboards (Lenovo Preferred Pro fullsize, Black) Polish (models B1G 41G B2G 21G D1G F2G) ATX with DMS59 (models) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO B2G 31G D2Q) 456 Hardware Maintenance Manual FRU# 41R3378 41R3376 29R9729 41D2781 39J9635 41D2399 42Y8181 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 463
Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) DVI-I card,FH(Casper) (models CTO) BTL external speaker (models CTO) FRU# 41A5219 41A5247 41A5246 39J9334 41A5334 CRU Tier 2 2 2 2 2 RoHS? Y Y Y Y Y 9287 Power Cords Line Cord - US - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 464
9287 Power Cords Line Cord - Japan (models) Line Cord - ANZ (models) Line Cord - ANZ (models) Line Cord - Hong Kong (models) Line Cord - Hong Kong (models) Line Cord - Thailand (models) Line Cord - Thailand (models) 9287 Windows XP Pro Recovery CDs US/UK/AP/TH (models B1G 41G B2G 21G D1G F2G) FR/CF - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 465
) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9287 Vista Home Basic 32 Recovery DVDs 9287 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO (models) SV (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 466
CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9287 Vista Business 32 Recovery DVDs FRU# 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 460 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 467
Machine Type 9288 Item # 9288 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2. - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 468
for VISTA Models ONLY (models CTO) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 469
F3T ) 10 220W Small desktop power supply (non-smokeless) (models CTO B1G D1G D1A D1T F2G F2A F2T) 10 220 Watt Power Supply - China (models CTO-A) 10 220 Watt Power Supply - WW (models CTO B1G D1G D1A D1T F2G F2A F2T) 10 220 Watt Power Supply - china (models CTO-A) FRU# 40Y9034 41X2500 40Y9035 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 470
CTO) 1 drop IDE cable (all models) Shield, EMC, system board (all models) Shield, EMC, blank 5.25in. drive bay (all models) Shield, EMC, blank diskette drive Y Y Y Y Y Y Y Y Y Y 9288 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models B1G D1G D1A F2G 464 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 471
9288 Keyboards (Lenovo Preferred Pro fullsize, Black) Iceland (models MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO) Denver - ATI X300SE 128MB (models CTO - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 472
with DMS59 (models CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO) FRU# 41X2670 46R4158 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 473
9288 Power (models D1T F2T) Line Cord - Thailand (models D1T F2T) 9288 Windows XP Pro Recovery CDs US/UK/AP/TH (models B1G D1G D1A D1T F2G F2A F2T) ) Multilingual 2 (models B1G D1G F2G) 9288 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FRU# 41R3221 41R3341 41R3175 41R3248 41R3249 41R3196 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 474
Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO (models) SV (models) DK (models) NL (models) CZ (models) FI (models) PL (models) RU (models) 468 Hardware Maintenance Manual FRU# 87H4421 87H4422 87H4423 87H4424 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 475
TR (models) HU (models) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9288 Vista Business 32 Recovery DVDs FRU# 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 1 Chapter 10. FRU lists 469 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 476
Type 9374 Item # 9374 FRUs 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO A1G A2Q B1G 21G 22Q 23Q 24Q D1G D1Q D2G D3Q E1G F1G A3G A4G 25G 31G 32G D4G D5G) 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO 1M 65W 65nm G1 (models CTO) FRU# 41N8249 41R4802 41X1403 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 477
VISTA Models ONLY (models CTO) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO) 5 Hard disk drive, 80GB (7200RPM), Serial ATA (models CTO A1G A2Q B1G 21G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 478
CTO) 8 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 9 System board, AMD Sys Planar for Vista and XP (models CTO A1G A2Q B1G 21G 22Q 23Q 24Q D1G D1Q D2G D3Q E1G F1G A3G A4G 25G 31G 32G D4G D5G A5G 26G D6L D7G D7Q ) 10 220W Small desktop power supply Maintenance Manual FRU# - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 479
profile I/O, 250mm, Rohs (all models) Foot stand (all models) Retention module, AMD (all models) FRU# 42Y8008 41R4813 41R2507 CRU Tier N N N RoHS? Y Y Y 9374 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1G A2Q B1G 21G 22Q 23Q 24Q D1G D1Q D2G D3Q E1G F1G A3G A4G 25G 31G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 480
Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO) Denver - ATI X300SE 128MB (models CTO) Dongle Cable - DMS59 to dual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 481
Nvidia GeForce 7300LE 128MB 64bit LP /ATX with DMS59 (models CTO) ATI Radeon X1300PRO 256MB 128bit (models CTO) ATI X1300LE 256M 64bit LP / ATX with DMS59 (models CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO A1G B1G 21G D1G D1Q D2G E1G F1G) Wireless Keyboard (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 482
9374 Power Cords Line Cord - Switzerland 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9374 Windows XP Pro Recovery CDs US/UK/AP/TH (models A1G B1G 21G 22Q 23Q 24Q D1G D1Q D2G D3Q E1G F1G A3G RoHS? Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 476 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 483
42Y3719 42Y3722 42Y3728 42Y3725 42Y3717 42Y3727 42Y3723 42Y3726 42Y3729 42Y3730 42Y3645 42Y3879 CRU Tier 1 RoHS? Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 9374 Windows XP Pro Recovery CDs US/UK/AP/TH (models B1G D1G D1A D1T F2G F2A F2T) FR/CF (models B1G D1G F2G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 484
9374 Windows XP Pro Recovery CDs RE (models B1G D1G F2G) HU (models B1G D1G F2G) CZ (models B1G D1G F2G) TR (models B1G D1G F2G) GK (models B1G D1G F2G) SL (models B1G D1G F2G) Multilingual 1 (models B1G D1G F2G) Multilingual 2 (models B1G D1G F2G) 9374 Vista Home Basic 32 Recovery DVDs US/UK - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 485
GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9374 Vista Business 32 Recovery DVDs FRU# 87H4479 87H4480 87H4481 87H4482 87H4483 87H4484 87H4485 87H4486 87H4487 87H4488 87H4489 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 486
Type 9378 Item # 9378 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 1 Heatsink for Intel processors (all models) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 480 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 487
M0 (models) 3 DVD-ROM drive (16X/48X) (models CTO B1G 42G B2G 21G D2G F2G) 3 DVD-ROM drive (16X/48X) (models CTO B1G 42G B2G 21G D2G F2G) 3 DVD-ROM drive (16X/48X) (models CTO B1G 42G B2G 21G D2G F2G) 3 DVD-ROM Drive (16x/48x) (models CTO B1G 42G B2G 21G D2G F2G K3J K5J K7J) 3 Combo 48 -32 -48 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 488
(models CTO) 8 Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 9 System board, SiS 662 Gig E Sys Planar for Vista and XP (models CTO A1C B1G 42G D1A D1T D1C H1G B2G 21G D2G F2G J1G K1G K2G K3J K4J K5J K6J K7J K8J ) 10 220W Small desktop power supply (non-smokeless) (models CTO B1G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 489
CTO) 1 drop IDE cable (all models) Shield, EMC, system board (all models) Shield, EMC, blank 5.25in. drive bay (all models) Shield, EMC, blank diskette drive (all models) Retention module, Intel (all models) 9378 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1C B1G 42G D1A - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 490
Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO) Denver - ATI X300SE 128MB (models CTO) Dongle Cable - DMS59 to dual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 491
DMS59 (models CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO A1G B1G 21G D1G D1Q D2G E1G F1G) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 492
Power Cord - Thailand (models) Line Cord - Thailand (models) 9378 Windows XP Pro Recovery CDs US/UK/AP/TH (models B1G 42G D1A D1T H1G B2G F2G J1G) 9378 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) 486 Hardware Maintenance Manual FRU# 41R3341 41R3175 41R3248 41R3249 41R3196 41R3197 41R3224 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 493
) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9378 Vista Home Basic 32 Recovery DVDs 9378 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO (models) SV (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 494
TR (models) HU (models) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9378 Vista Business 32 Recovery DVDs FRU# 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 1 488 Hardware Maintenance - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 495
Machine Type 9379 Item # 9379 FRUs 1 Heatsink for Intel CPUs (all models) 1 Heatsink for Intel CPUs (models CTO) 1 Heatsink for Intel CPUs (all models) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO) 2 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 496
CTO) 3 Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 3 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO B1G D1G D1A D1T F2G F2A F2T) 4 DVD-ROM drive (16X/48X) (models CTO Y Y Y Y Y Y Y Y Y Y Y Y Y 490 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 497
# 9379 FRUs 4 DVD-ROM drive (16X/48X) (models CTO B1G D1G D1A D1T F2G F2A F2T) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 498
13 Power supply (300W) (models CTO) 13 Power supply (230W) (models CTO B1G D1G D1A D1T F2G F2A F2T) 13 Power supply (250W) (models CTO B1G D1G D1A D1T F2G F2A F2T) 13 Power supply (220V/250W/ATX12V - China) (models CTO) 13 Power Supply 5281-7VW-ROHS, 280W, Standard (models CTO) 13 Power Supply - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 499
9379 FRUs ODD/FDD/Cardreader Retainers (models) RM Asm, Intel (models) 9379 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models B1G D1G D1A F2G F2A) Arabic (models B1G D1G F2G) Arabic/French (models B1G D1G F2G) Belgian/French ( - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 500
CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) DVI-I card,FH(Casper) (models CTO) BTL external speaker (models CTO Y Y Y 9379 Power Cords Line Cord - Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 501
9379 Power Cords Line Cord - UK, Ireland, Singapore, Malaysia, Brunei (models B1G D1G D1A F2G F2A) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9379 Windows XP Pro Recovery CDs US/UK/AP/TH (models B1G D1G D1A D1T F2G F2A F2T) FR/CF (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 502
Windows XP Pro Recovery CDs Multilingual 2 (models B1G D1G F2G) 9379 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) (models) HK (models) KR (models) 496 Hardware Maintenance Manual FRU# 42Y3555 42Y3721 42Y3718 42Y3719 42Y3722 42Y3728 42Y3725 42Y3717 42Y3727 42Y3723 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 503
SL (models) RE (models) 9379 Vista Home Basic 32 Recovery DVDs 9379 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO (models) SV (models) DK (models) - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 504
Machine Type 9380 Item # 9380 FRUs 1 Heatsink for Intel processors (all models) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A1A A1T A1C A1B A1H A2C A3A A3T) 2 Microprocessor, Celeron D 2.93GHz 533MHz - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 505
M0 (models) 3 DVD-ROM drive (16X/48X) (models CTO F2G) 3 DVD-ROM drive (16X/48X) (models CTO F2G) 3 DVD-ROM drive (16X/48X) (models CTO F2G) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO 91A 91T) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO 91A 91T) 3 Combo 48 -32 -48 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 506
for VISTA Models ONLY (models CTO J1G J2G) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO J1G J2G) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO ) 5 Hard disk drive, 80GB (7200RPM), Serial ATA (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 507
J3G J4A J4T ) 10 220W Small desktop power supply (non-smokeless) (models CTO A1A A1T A3A A3T B1G 41A 41T 9380 FRUs Thermal grease kit (models CTO) 1 drop IDE cable (all models) Shield, EMC, system board (all models) Shield, EMC, blank 5.25in. drive bay (all models) Shield, EMC, blank diskette drive - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 508
N N N N N N N RoHS? Y Y Y Y Y Y Y Y Y Y 9380 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1A A1C A1H A2C A3A B1G 41A 51A D1A D1C D1H (models B1G D2G H1G F2G J1G) 502 Hardware Maintenance Manual FRU# 41A5039 41A5040 41A50D1 41A5042 41A5043 41A5045 41A5046 41A5047 41A5048 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 509
9380 Keyboards (Lenovo Preferred Pro fullsize, Black) Swiss F/G (models B1G D2G H1G F2G Y Y Y 9380 Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 510
9380 Power Cords Line Cord - US (models A1A A3A 41A 51A D1A G1A 91A) Line Cord - US (models 43N9029 43N9030 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 504 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 511
9380 Windows XP Pro Recovery CDs US/UK/AP/TH (models A1A A1T A1H B1G 41A 41T 42Y3723 1 Y 42Y3726 1 Y 42Y3729 1 Y 42Y3730 1 Y 41W7751 1 Y 41W7762 1 Y 42Y3645 1 Y 42Y3879 1 Y 9380 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 512
KR (models) SL (models) RE (models) 9380 Vista Home Basic 32 Recovery DVDs 9380 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models (models) SL (models) RE (models) 506 Hardware Maintenance Manual FRU# 87H4431 87H4432 87H4433 87H4434 87H4435 87H4436 87H4437 87H4438 87H4439 87H4440 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 513
Machine Type 9383 Item # 9383 FRUs 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO B1G B2G 31G D1G D2G F1G B3G 32G 33G 34G D3G) 1 Heatsink for AMD Sempron & Athlon AM2 processors (models CTO) 2 Microprocessor, 3000+ Sempron AM2 (1.6 GHz processor, 62W) (models CTO) 2 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 514
GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 3 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO B1G B2G B3G 33G B4G 35G) 4 DVD-ROM drive (16X/48X) (models CTO B1G B2G B3G 33G B4G 35G) 4 DVD-ROM drive (16X/48X) (models CTO B1G B2G B3G 33G B4G 35G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 515
10 Hard disk drive, 500GB (7200RPM), Serial ATA (models CTO) 11 System board, AMD for Vista and XP (models CTO B1G B2G 31G D1G D2G F1G B3G 32G 33G 34G D3G B4G 35G D4G) 12 Fan, Rear w/ grommets & Grill (all models) 13 Power supply (300W) (models CTO) 13 Power supply (230W) (models CTO B1G B2G 31G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 516
9383 FRUs Cable, hard disk drive and optical signal (all models) Front system fan (all models) 4-pin PATA to 15-pin SATA power connector (all models) SATA cable, 457 mm (models) Retainer, Card Reader (all models) Front Fan AVC (all models) Optional HDD Bracket Assembly, without 4Pin cable (all - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 517
Lenovo CTO) Internal USB Memory Card Reader (models CTO B2G 31G D1G D2G F1G) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) DVI-I card,FH(Casper) (models CTO) BTL external speaker (models CTO US (models) 9383 Power Cords FRU# 41R3184 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 518
9383 Power Cords Line Cord - US (models) Line Cord - China (models) Line Cord - China (models) 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 512 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 519
9383 Power Cords Line Cord - Thailand (models) Line Cord - Thailand (models) 9383 Windows XP Pro Recovery CDs US/UK/AP/TH ( Multilingual 2 (models B2G 31G D1G D2G F1G B3G 32G 33G 34G D3G) 9383 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 520
SL (models) RE (models) 9383 Vista Home Basic 32 Recovery DVDs 9383 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR ( HK (models) KR (models) SL (models) 514 Hardware Maintenance Manual FRU# 87H4430 87H4431 87H4432 87H4433 87H4434 87H4435 87H4436 87H4437 87H4438 87H4439 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 521
RE (models) 9383 Vista Business 32 Recovery DVDs FRU# 43C1308 CRU Tier 1 Chapter 10. FRU lists 515 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 522
Machine Type 9384 Item # 9384 FRUs 1 Heatsink for AMD Sempron & Athlon AM2 processors (models D6U D6F D7U D7F D8G D9G CTO A1G A2S A2P A2Y A3S A3P A3Y A4S A4P A4Y A5Q A6U A6F A6S A6P A6Y B1S B1P B1Y B2G 21G 22Q 23Q 24K 24R - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 523
34A 34Q 34T 34C 34B 34H 34V 34K 34R 34E 34J D7U D7F) 3 DVD-ROM drive (16X/48X) (models CTO A1G 21G A8G 29G 34U 34F 34S 34P 34L 34D 34Y 34G 34M 34A 3AA 3AQ 3AT 3AC 3AB 3AH 3AV 3AK 3AR 3AE 3AJ ) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO A2S A2P A2Y B2G 25K 25R 28S 28P 28Y 32U 32F 32S - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 524
for VISTA Models ONLY (models CTO F1G D9G F2G) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO F1G D9G F2G) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO) 5 Hard disk drive, 80GB (7200RPM), Serial ATA - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 525
34F 34G 34M 34A 34T 34K 34R 34E 34J 35U 35F 35G D6U D6F D7U D7F D8G D9G) 10 220W Small desktop power supply (smokeless -- Japanese) (models D5E D5J) 10 220W Power Supply - China (models CTO-A A5Q 22Q 23Q D1Q D5Q B4S B4P B4Y 34S 34P 34L 34D 34Y 34Q 34C 34B 34H 34V 35S 35P - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 526
D9G) 10 220 Watt Power Supply - china (models CTO-A A5Q 22Q 23Q D1Q Hard disk drive bracket asm (plastic and grommets) (all models) Hard disk drive fan Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9384 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1G A5Q A6U B2G 21G 22Q 23Q 24R 25R Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 527
9384 Keyboards (Lenovo Preferred Pro fullsize, Black) Arabic (models A1G B2G 21G D2G D5G E1G F1G A8G B5G 29G 34G 35G D8G D9G) Arabic/French (models A1G B2G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 528
Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO) Denver - ATI X300SE 128MB (models CTO) Dongle Cable - DMS59 to dual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 529
(models) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO) FRU# 42Y8183 41X2668 41X2667 41X2669 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 530
9384 Power Cords Line Cord - Italy (models A1G A2S A2Y A3S A3Y A4S A4Y A6S A6Y B1S 43N9030 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9384 Windows XP Home Recovery CDs US/UK/AP/TH (models 25R 33R) BR (models A2P) SP/LA (models A2S A2Y - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 531
9384 Windows XP Pro Recovery CDs US/UK/AP/TH (models A1G A6U B2G 21G 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9384 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) FRU# 87H4420 87H4421 87H4422 CRU Tier - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 532
Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO (models) SV (models) DK (models) NL (models) CZ (models) FI (models) PL (models) RU (models) TR (models) HU (models) 526 Hardware Maintenance Manual FRU# 87H4423 87H4424 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 533
GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9384 Vista Business 32 Recovery DVDs FRU# 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 Chapter 10. FRU lists 527 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 534
Machine Type 9387 Item # 9387 FRUs 1 Heatsink for Intel CPUs (all models) 1 Heatsink for Intel CPUs (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A2C) 2 Microprocessor, Celeron D 2.93GHz - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 535
module, 512 MB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 3 Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO B1G 42G B2G 21G D2G F3G F4C) 4 DVD-ROM drive (16X/48X) (models CTO B1G 42G B2G 21G D2G F3G F4C) FRU# 41T1713 41T1714 41T1715 41T1704 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 536
D2G F3G F4C) 4 DVD-ROM Drive (16x/48x) (models CTO B1G 42G B2G 21G D2G F3G F4C) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 537
FRUs 13 Power supply (250W) (models CTO B1G 42G J1G B2G 21G D2G F3G H1G) 13 Power supply (220V/250W/ATX12V - China) (models CTO A2C 43C 22C F4C) 13 Power Supply 5281-7VW-ROHS, 280W, Standard (models CTO) 13 Power Supply 5281-7VW-ROHS, 280W, Standard (models CTO) 13 Power Supply 310W standard - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 538
Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO) Denver - ATI X300SE 128MB (models CTO) Dongle Cable - DMS59 to dual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 539
/ ATX with DMS59 (models CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO B2G 31G D1G D2G F1G) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) DVI-I card,FH(Casper) (models CTO) BTL external speaker (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 540
Power Cord - Thailand (models) Line Cord - Thailand (models) 9387 Windows XP Pro Recovery CDs US/UK/AP/TH (models B1G 42G J1G B2G 21G D2G F3G B1G 42G J1G B2G 21G D2G F3G H1G) 534 Hardware Maintenance Manual FRU# 41R3213 41R3228 41R3229 41R3236 41R3237 41R3220 41R3221 41R3341 41R3175 41R3248 41R3249 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 541
Windows XP Pro Recovery CDs SL (models B1G 42G J1G B2G 21G D2G F3G H1G) Simplified Chinese (models F4C) Multilingual 1 (models B1G 42G J1G B2G 21G D2G F3G H1G) Multilingual 2 (models B1G 42G J1G B2G 21G D2G F3G H1G) 9387 Vista Home Basic 32 Recovery DVDs Vista Business 32 Recovery DVDs US/UK/AP/TH - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 542
) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9387 Vista Business 32 Recovery DVDs FRU# 87H4483 87H4484 87H4485 87H4486 87H4487 87H4488 87H4489 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 543
Machine Type 9389 Item # 9389 FRUs 1 Heatsink for Intel CPUs (all models) 1 Heatsink for Intel CPUs models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A1A A1T A2C A3G A1B A1H) 2 Microprocessor, - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 544
512 MB PC2-4200 (533MHz) DDR2 SDRAM (models CTO B1G 51A 51T D1A D1T D1B D1H D2G G1A G1T 21B 21H 91A 91T F4G) 3 Memory module, 1 GB PC2-4200 (533MHz) DDR2 SDRAM (models CTO J1G G2G) 3 Memory module, 2GB PC2-4200 (533MHz) DDR2 SDRAM (models CTO) 3 Memory module, 512 MB PC2-5300 (667MHz) DDR2 SDRAM - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 545
CTO) 3 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO F4G F5C F6G) 4 DVD-ROM drive (16X/48X) (models CTO F4G F5C F6G) 4 DVD-ROM drive (16X/48X) (models CTO F4G F5C F6G) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO 91A 91T) 4 Combo - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 546
9389 FRUs 11 System board, Intel for Vista and XP (models CTO all models) 13 Power supply (300W) (models CTO) 13 Power supply (230W) (models CTO A1A A1T A3G tables are not illustrated. Thermal grease kit (all models) 9389 FRUs FRU# 91P8835 CRU Tier N RoHS? Y 540 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 547
disk drive and optical signal (all models) Front system fan (all models) 4-pin PATA to 15-pin SATA power connector (all models) Retainer, Card 1 2 N RoHS? Y Y Y Y Y Y Y Y Y Y Y N N N N Y Y 9389 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1A A2C A3G B1G 41A 42C 43G 51A D1A - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 548
9389 Keyboards (Lenovo Preferred Pro fullsize, Black) Romanian (models A3G B1G 43G D2G J1G models) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO B2G 31G D1G D2G F1G) Wireless Keyboard (models CTO) 542 Hardware Maintenance Manual FRU# 41R3378 41R3376 29R9729 41D2781 39J9635 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 549
Adapters and miscellaneous FRUs Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) DVI-I card,FH(Casper) (models CTO) BTL external speaker (models CTO) FRU# 41A5247 41A5246 39J9334 41A5334 CRU Tier 2 2 2 2 RoHS? Y Y Y Y 9389 Power Cords Line Cord - US (models A1A - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 550
9389 Power Cords Line Cord - Thailand (models A1T 41T 51T D1T G1T 91T ) 9389 Windows XP Pro Recovery CDs US/UK/AP/TH (models A1A A1T B1G 41A 41T 51A F4G G2G) 9389 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) 544 Hardware Maintenance Manual FRU# - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 551
TR (models) HU (models) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9389 Vista Home Basic 32 Recovery DVDs 9389 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 552
PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9389 Vista Business 32 Recovery DVDs FRU# 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 546 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 553
Machine Type 9628 Item # 9628 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A1Q A2S A2D A2Y A3C) 2 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 554
CTO) 3 DVD-ROM drive (16X/48X) (models CTO B1G 52C B3G F9G FAC J1C) 3 DVD-ROM drive (16X/48X) (models CTO B1G 52C B3G F9G FAC J1C) 3 DVD-ROM drive (16X/48X) (models CTO B1G 52C B3G F9G FAC J1C) 3 DVD-ROM Drive (16x/48x) (models CTO B1G 52C B3G F9G FAC J1C) 3 Combo 548 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 555
for VISTA Models ONLY (models CTO H1G J2G) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO H1G J2G) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO ) 5 Hard disk drive, 80GB (7200RPM), Serial ATA (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 556
desktop power supply (non-smokeless) (models CTO Power Supply - China (models CTO-A A1Q A3C 51Q 52C FAC J1C) 10 220 Watt Power Supply - WW (models CTO Power Supply - china (models CTO drive bracket asm (plastic and grommets) (all models) Hard disk drive Y 9628 Keyboards (Lenovo Preferred Pro fullsize, - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 557
9628 Keyboards (Lenovo Preferred Pro fullsize, Black) Arabic (models B1G H1G B3G D2G ) Optical Wheel Mouse (400DPI, USB) (all models) PS/2 Three Button ball mouse (models CTO) ScrollPoint Optical Mouse (800DPI, USB) (models CTO) FRU# 41U3013 41U3030 41R0018 41U3019 CRU Tier 1 1 1 1 RoHS? Y Y Y Y - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 558
CTO) Internal USB Memory Card Reader (models CTO) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO Y Y Y Y Y Y Y Y 9628 Power Cords Line Cord - US (models A2S A2D Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 559
9628 Power Cords Line Cord - UK, Ireland, Singapore, Malaysia, Brunei (models B1G H1G B3G D2G F9G 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9628 Windows XP Pro Recovery CDs US/UK/AP/TH (models B1G 51Q H1G B3G D2G F9G J2G) FR/CF (models B1G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 560
Windows XP Pro Recovery CDs Multilingual 2 (models B1G H1G B3G D2G F9G J2G) 9628 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA ( PO (models) CS (models) 554 Hardware Maintenance Manual FRU# 42Y3720 42Y3724 42Y3555 42Y3721 42Y3718 42Y3719 42Y3722 42Y3728 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 561
TW (models) HK (models) KR (models) SL (models) RE (models) 9628 Vista Home Basic 32 Recovery DVDs 9628 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO (models) SV (models) DK (models) - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 562
, 62W) (models CTO 21Q 22Q 23Q 24K 24R 25K 25R 26S 26P 26Y 27S 27P 27Y 28S 28P 28Y 28U 29U 2AK 2AR) 2 Microprocessor, 3600+ Athlon64 AM2 X2 (2.0 GHz processor, 89W) (models CTO) FRU# 41N8249 41R4802 41X1403 41X1407 41X1409 41X1411 42Y8940 41X1415 41X7777 556 Hardware Maintenance Manual CRU Tier - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 563
24R 26S 26P 26Y 27S 27P 27Y 28S 28P 28Y) 3 Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO 25K 25R) 3 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO B1G B5G 35U 35F 35S 35P 35L 35D 35Y 35G 35M 35A 35Q 35T 35C 35B 35H 35V - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 564
36S 36P 36Y 38G D6U D6F) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO A1S A1P A1Y A6U A6F A6S A6P B4Y 2AK 2AR 37S 37P 37Y) 5 Diskette drive, 3,5″, 1.44MB, 2 Mode (models CTO A2S A2P A2Y A3S A3P A3Y 21Q 22Q 23Q 1 1 1 2 2 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y 558 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 565
assembly (all models) 7 Power switch/LED assembly (all models) 8 Speaker assembly, soldered terminals (models CTO A1M A3M B1V 21V 22M 25M D1V D3M D5M) 9 Front audio/USB assembly (all models) 10 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO ) 10 Hard disk drive, 80GB (7200RPM), Serial - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 566
35B 35H 35V 36S 36P 36Y 37S 37P 37Y D7Y) 13 Power Supply 5281-7VW-ROHS, 280W, Standard (models CTO) 13 Power Supply 5281-7VW-ROHS, 280W, Standard (models CTO) 13 Power Supply 310W standard only for Japan (models CTO) FRU# 41N3485 41N3479 41N3482 24R2596 CRU Tier 2 2 2 2 RoHS? Y Y Y Y The FRUs - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 567
9631 Keyboards (Lenovo Preferred Pro fullsize, Black) Bulgarian (models B1G 33G D4G D5G E1G B5G 32G 35G 38G D8G) Hong Kong/Taiwan (models D4B D4V 35B 35V) Czech ( - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 568
CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO B2G 31G D1G D2G F1G) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) DVI-I card,FH(Casper) (models CTO Power Manual CRU Tier 1 RoHS? Y 1 Y 1 Y 1 Y 1 Y - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 569
9631 Power Cords Line Cord - Brazil (models A1P A2P A3P A5P A6P B2P 26P 27P 28P 31P 32P D1P D2P D4P B4P 35P 36P 37P) Line Cord - - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 570
9631 Power Cords Line 42Y3602 42Y3600 41W7773 CRU Tier 1 1 1 1 RoHS? Y Y Y Y 9631 Windows XP Pro Recovery CDs US/UK/AP/TH (models A5U A6U B1G 21Q 22Q 23Q 24R 33G 34U D1U D2U 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 564 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 571
9631 Windows XP Pro Recovery CDs GK (models B1G 33G D4G D5G E1G B5G 32G 35G 38G D8G) SL ( 32G 35G 38G D8G) Multilingual 2 (models B1G 33G D4G D5G E1G B5G 32G 35G 38G D8G) 9631 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 572
GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9631 Vista Business 32 Recovery DVDs FRU# 87H4478 87H4479 87H4480 87H4481 87H4482 87H4483 87H4484 87H4485 87H4486 87H4487 87H4488 87H4489 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 573
Machine Type 9632 Item # 9632 FRUs 1 Heatsink for Intel processors (all models) 1 Heatsink for Intel processors (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A1Q A2U A3S A3P A3D A3Y A3C A3B - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 574
9632 FRUs 2 Microprocessor, Pentium 4 3.4 GHz 800 FSB 2MB L2 (models CTO) 2 Microprocessor, Pentium 4 661 Processor 3.6 GHz 800 FSB 2MB L2 B1-Value (models CTO) 2 Microprocessor, Pentium 4 2.8 GHz 800 FSB 2MB L2 (models CTO M0 (models) 3 DVD-ROM drive (16X/48X) (models CTO A4U A4F B3G D2U D2G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 575
Item # 9632 FRUs 3 DVD-ROM drive (16X/48X) (models CTO A4U A4F B3G D2U D2G D7U D7F F7U F7F F7S F7P F7L F7D J6K M8G P5K P5J Q2U Q2F Q2S Q2P Q2L Q2D Q2Y Q2G Q2M Q2A Q2Q Q2T Q2C Q2B Q2H Q2V Q2K Q2R Q2E Q2J Q3C Q3B Q3H ) 3 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW --NON/VISTA (models CTO 54S 54P 54Y - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 576
J8U J8F J8G J8J) 3 DVD Recordable No Software / No Royalty for VISTA Models ONLY (models CTO H2G J2U J2F J2G J8U J8F J8G J8J) 4 Front Power/LED PC, bracket, and cable (all models) 5 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO ) 5 Hard disk drive, 80GB (7200RPM), Serial ATA (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 577
Item # 9632 FRUs 8 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 9 System board, Intel Sys Planar for Vista and XP (models J1Q J1C J2U J2F J2G J3S M7A M7Q M7T M7C M7B M7H 7V M7K M7R M7E M7J M8G P5K P5J Q1U Q1F Q2U Q2F Q2S Q2P Q2L Q2D Q2Y Q2G Q2M Q2A Q2Q Q2T Q2C Q2B Q2H Q2V Q2K Q2R - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 578
Item # 9632 FRUs 9 System board, 946GZ B ver 1.0 P1F P1S P1P P1D P1Y P2C P2B P2H C1U C2U C3U C4U C5U C7U C8U CTO A1Q A2U A3S A3P A3D A3Y A3C A3B A3H A4U A4F B1S B1P B1Y B2U M7Q M7T M7C M7B M7H 7V M7K M7R M7E M7J M8G P5K P5J Q1U Q1F Q2U Q2F Q2S Q2P Q2L Q2D Q2Y Q2G Q2M Q2A Q2Q Q2T Q2C Q2B Q2H Q2V Q2K - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 579
M8G P5K P5J Q1U Q1F Q2U Q2F Q2S Q2P Q2L Q2D Q2Y Q2G Q2M Q2A Q2Q Q2T Q2C Q2B Q2H Q2V Q2K Q2R Q2E Q2J Q3C Q3B Q3H) 10 220W Small desktop power supply (non-smokeless) (models P1U P1F P1S P1P P1D P1Y C1U C2U C3U C4U C5U C7U C8U CTO A2U A3S A3P A3D - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 580
9632 FRUs Miscellaneous hardware kit (all models) Hard disk drive bracket asm (plastic and grommets) (all models) Hard disk drive fan and bracket N N N N RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y 9632 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1Q A2U A3C A3H A4U B2U B3G 41A 51Q 51C - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 581
9632 Keyboards (Lenovo Preferred Pro fullsize, Black) Korean (models F7K M2K M3K) Y Y Y 9632 Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 582
kybd/mouse (models CTO) BTL external speaker (models CTO) DVI-I card,FH(Casper) (models CTO) FRU# 41X2668 41X2667 41X2669 42Y8165 41X2670 46R4158 42Y8159 41D1934 41A5219 41A5247 41A5246 41A5334 39J9334 CRU Tier 2 2 2 2 2 2 2 2 2 2 2 2 2 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y 9632 Power Cords Line Cord - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 583
9632 Power Cords Line Cord - Italy (models A3S A3Y B1S B1Y B3G 53S 53Y 54S 54Y 62S 43N9029 43N9030 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9632 Windows XP Pro Recovery CDs US/UK/AP/TH (models A2U A3H A4U B2U B3G 41A 41T 51Q 51H 61Q D1A - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 584
9632 Windows XP Pro Recovery CDs BR (models B3G D2G H2G F7G J2G M1G M2G P1P) SP/LA (models 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9632 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 585
TR (models) HU (models) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9632 Vista Home Basic 32 Recovery DVDs 9632 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 586
Machine Type 9635 Item # 9635 FRUs 1 Heatsink for Intel CPUs (all models) 1 Heatsink for Intel CPUs (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO A1Q A2A A2T A3C A2S A2Y) 2 Microprocessor, - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 587
M0 (models) 2 Microprocessor, E6320 B2 Conroe 1066/1.86/4M/775 (models) 2 Microprocessor, E6420 B2 Conroe 1066/2.13/4M/775 (models) 3 Memory module, 512 MB PC2-4200 (533MHz) DDR2 SDRAM (models CTO 52S 52Y 61S 61Y 62S 62Y D1A D1T D2S D2Y H1S H1Y B2Q B2C B2B B2H 22S 22Y 25S 25Y 31S - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 588
Item # 9635 FRUs 4 DVD-ROM drive (16X/48X) (models CTO D3G F6G F8S F8C) 4 DVD-ROM drive (16X/48X) (models CTO D3G F6G F8S F8C) 4 DVD-ROM drive (16X/48X) (models CTO D3G F6G F8S F8C) 4 DVD-ROM Drive (16x/48x) (models) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO 62S 62Y D1A D1T D2S - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 589
grommets & Grill (all models) 13 Power supply (300W) (models CTO) 13 Power supply (230W) (models CTO A2A A2T B1S B1Y 41A 41T 52S 52Y drive and optical signal (all models) Front system fan (all models) 4-pin PATA to 15-pin SATA power connector (all models) SATA cable, 457 mm (models) Retainer, Card - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 590
Serial (all models) Shield, diskette drive EMC (all models) Cable, Diskette drive (RoHs) (all models) Cover, Y Y Y Y Y Y Y Y Y 9635 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1Q A2A A3C 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 584 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 591
9635 Keyboards (Lenovo Preferred Pro fullsize, Black) Polish (models MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE 1394 PCI Adapter (models CTO) Denver - ATI X300SE 128MB (models CTO - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 592
and miscellaneous FRUs Internal USB Memory Card Reader (models CTO B2G 31G D1G D2G F1G) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) DVI-I card,FH(Casper) (models CTO) BTL external speaker (models CTO) FRU# 41D1934 41A5219 41A5247 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 593
9635 Power Cords Line Cord - Israel (models J1G D3G F6G G1G) Line Cord - South Africa (models 41R3225 43N9029 43N9030 CRU Tier 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y 9635 Windows XP Pro Recovery CDs US/UK/AP/TH (models A2A A2T 41A 41T 51Q D1A D1T J1G B2Q B2H 23A 23T D3G F6G G1G - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 594
Windows XP Pro Recovery CDs Hong Kong-TC (models B2B) Multilingual 1 (models J1G D3G F6G G1G) Multilingual 2 (models J1G D3G F6G G1G) 9635 Vista Home Basic 32 Recovery DVDs US IT (models) JP (models) NO (models) 588 Hardware Maintenance Manual FRU# 41W7762 42Y3645 42Y3879 CRU Tier 1 1 1 RoHS? Y - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 595
) HU (models) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9635 Vista Business 32 Recovery DVDs FRU# 87H4484 87H4485 87H4486 87H4487 87H4488 87H4489 87H4490 87H4491 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 596
Type 9637 Item # 9637 FRUs 1 Heatsink for Intel CPUs (all models) 1 Heatsink for Intel CPUs (models CTO) 2 Microprocessor, Celeron D 2.66GHz 533MHz FSB 256KB L2 (models CTO) 2 Microprocessor, Celeron D 2.80GHz 533MHz FSB 256KB L2 (models CTO 800 FSB 1MB L2 (models CTO 26U 26F 27S 27P 27Y 28S - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 597
/2200MHZ-2M, LGA, EM64T M0 (models) 2 Microprocessor, E4600 CONROE 800/2400MHZ-2M, LGA, EM64T M0 (models) 3 Memory module, 512 MB PC2-4200 (533MHz) DDR2 SDRAM (models P2M P2A P2Q P2T P2V P2K P2J P3C CTO A1U A4U A4F A4S B2U B3G 53S 53P 53Y 54S 54P 54Y 55S 55P 55Y 61Q 62S - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 598
CTO) 3 Memory module, 512 MB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 3 Memory module, 1 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 3 Memory module, 2 GB PC2-5300 (667MHz) DDR2 SDRAM (models CTO) 4 DVD-ROM drive (16X/48X) (models CTO 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW (models CTO 54S - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 599
9637 FRUs 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW --NON/VISTA (models CTO Q2U Q2F Q2S Q2P Q2L Q2D Q2Y Q2G Q2M Q2A Q2Q Q2T Q2C Q2B Q2H Q2V Q2K Q2R Q2E Q2J Q6B Q6H Q7G) 4 Combo 48 -32 -48 -16 - - DVD - ROM - CDRW --NON/VISTA (models CTO drive, 3,5″, 1.44MB, 2 Mode (models CTO ) 7 Power switch/LED - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 600
9637 FRUs 9 Front audio/USB assembly (all models) 10 Hard disk drive, 40GB (7200RPM), Serial ATA (models CTO) 10 Hard disk drive, 80GB (7200RPM), Serial ATA (models P1U P1F P1S P1P P1L P1D P1Y P1G P1M P1A P1Q P1T P1C P1B P1H P1V P1K P1R P1E P1J P2M P2A P2Q P2T P2V P2K P2J CTO Q1U Q1F Q2U Q2F Q2S - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 601
Item # 9637 FRUs 11 System board, Intel for Vista and XP, Japan (models P1H P1V P1K P1R P1E P1J P2M P2A P2Q P2T P2V P2K P2J P3C CTO A1U A2S A2P A2D A2Y A2A A2T A2B A2H A3Q A4U A4F A4S D5P D5Y G1A G1T G2Q G3U G3F H1S H1P H1Y J1G ADD Q1U Q1F Q2U Q2F Q2S Q2P Q2L Q2D Q2Y Q2G Q2M Q2A Q2Q Q2T Q2C Q2B - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 602
9637 P1J P2M P2A P2Q P2T P2V P2K P2J P3C CTO A1U A2S A2P A2D A2Y A2A A2T A2B G3U G3F H1S H1P H1Y J1G ADD Q1U Q1F Q2U Q2F Q2S Q2P Q2L Q2D Q2Y Q2G Q2M the heat sink. 11 System board, 946GZ (modify PCB solve Conroe CPU issue and modify PCB solve Japan smokeless issue) ver1.2 matrix from Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 603
Item # 9637 FRUs 11 System board, 946GZ (models M1U M1F M1S M1P M1D M1Y M1G Q1U Q1F Q2U Q2F Q2S Q2P Q2L Q2D Q2Y Q2G Q2M Q2A Q2Q Q2T Q2C Q2B Q2H Q2V Q2K Q2R Q2E Q2J Q3C Q4C Q5C Q6B Q6H Q7G) 12 Fan, Rear w/ grommets & Grill (all models) 13 Power supply (300W) (models CTO) 13 Power supply (230W) - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 604
) Cable, hard disk drive and optical signal (all models) Retainer, Card Reader (all models) Y Y Y Y Y Y Y Y Y N N N N Y Y 9637 Keyboards (Lenovo Preferred Pro fullsize, Black) US English (models A1U A2A A2H A3Q A4U A5C 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 1 Y 598 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 605
9637 Keyboards (Lenovo Preferred Pro fullsize, Black) Hebrew (models B3G D1G J1G F9G Y Y Y 9637 Adapters and miscellaneous FRUs USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL,Bitland (models CTO) USB2.0 MEMORY CARDREADER,6X2,ROHS OPTIONAL, SONY (models CTO) PCI Modem Card (Soft) (models CTO) L1 IEEE - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 606
/ ATX with DMS59 (models CTO) X1300 LE 256MB (models CTO) Internal USB Memory Card Reader (models CTO B2G 31G D1G D2G F1G) Wireless Keyboard (models CTO) Wireless Mouse (models CTO) USB Transceiver for wireless kybd/mouse (models CTO) DVI-I card,FH(Casper) (models CTO) BTL external speaker (models - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 607
9637 Power Cords Line Cord - UK, Ireland, Singapore, Malaysia, Brunei (models A2A B3G 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9637 Windows XP Home Recovery CDs US/UK/AP/TH (models 26U) FR/CF (models 26F) FRU# 42Y3597 42Y3598 CRU - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 608
9637 Windows XP Pro Recovery CDs US/UK/AP/TH (models A1U A2A A2T A2H A4U B2U B3G 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RoHS? Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 9637 Vista Home Basic 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) FRU# 87H4420 87H4421 CRU - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 609
TR (models) HU (models) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9637 Vista Home Basic 32 Recovery DVDs 9637 Vista Business 32 Recovery DVDs US/UK/AP/TH (models) FR/CF (models) GR (models) SP/LA (models) BR (models) IT (models) JP (models) NO - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 610
HU (models) GK (models) PO (models) CS (models) TW (models) HK (models) KR (models) SL (models) RE (models) 9637 Vista Business 32 Recovery DVDs FRU# 87H4492 87H4493 87H4494 87H4495 87H4496 87H4497 87H4498 87H4499 43C1308 CRU Tier 1 1 1 1 1 1 1 1 1 604 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 611
use the DMI MIF Browser to update the MIF information in the EPROM. It is anticipated that some servicers might charge for this service. To update the EPROM using the DMI MIF Browser, use the following procedure. 1. Click Start from the desktop, then Programs. © Copyright Lenovo 2005, 2008 605 - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 612
drive. system program updates are available at http://www.lenovo.com/support on the World Wide Web. 2. Turn on the computer. If it is already on, you must turn it off and back on. The update begins. 3. Follow the instructions on the screen to complete the update. Recovering from a POST/BIOS update - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 613
power supply, processor, hard disk drives, and some monitors. Automatic configuration and power interface (ACPI) BIOS Being an ACPI BIOS system, the operating system is allowed to control the power v PCI Wake Up: This feature allows PCI cards that support this capability to wake the system. v Wake - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 614
608 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 615
to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user's responsibility to evaluate and verify the operation - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 616
of Lenovo in the United States, other countries, or both: Lenovo ThinkCentre PS/2 Windows are trademarks of Microsoft Corporation in the United States, other countries, or both. Other company, product, or service names may be trademarks or service marks of others. 610 Hardware Maintenance Manual - Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 617
- Lenovo ThinkCentre A55 | Hardware Maintenance Manual - Page 618
Part Number: 41X5730 Printed in USA (1P) P/N: 41X5730
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530
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531
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532
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533
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534
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535
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536
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537
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541
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566
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569
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571
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572
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578
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579
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581
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582
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584
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586
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603
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604
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606
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610
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611
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612
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613
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614
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615
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616
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617
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618
 |
 |
Hardware Maintenance Manual
Types
8013
8700
8701
8702
8705
8706
8716
8717
8970
8972
8973
8975
8976
8979
8980
8982
8983
8985
8986
8991
8992
8994
8995
9265
9266
9269
9276
9277
9278
9279
9282
9283
9286
9287
9288
9374
9378
9379
9380
9383
9384
9387
9389
9628
9631
9632
9635
9637
9646
9647
9648
9649