Lenovo ThinkPad T21 T20, T21, T22, T23 - Hardware Maintenance Manual (April 20
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- Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 1
IBM Mobile Systems ThinkPad Computer Hardware Maintenance Manual April 2002 This manual supports: ThinkPad T20, T21, T22, T23 (MT 2647/2648) ThinkPad Dock (MT 2631) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 2
programming, or services in your country. Requests for technical information about IBM products should be made to your IBM authorized dealer or your IBM marketing representative. © Copyright International Business Machines Corporation 2002. All rights reserved. US Government Users Restricted Rights - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 3
About this manual This manual contains service and reference information for IBM ThinkPad T20, T21, T22, T23 (MT2647, 2648), and ThinkPad Dock (MT2631) products. Use this manual along with the advanced diagnostic tests to troubleshoot problems. The manual is divided into sections as follows: v The - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 4
iv ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 5
Service web site 23 Restoring the preloaded system 23 Passwords 26 Power management 28 Checkout guide 32 Testing the computer 33 Detecting system information with PC-Doctor. . . 34 Power system checkout 35 ThinkPad T20, T21, T22 and T23 series. . . . . 39 Product overview 41 Specifications - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 6
142 Parts list 143 T20, T21, T22 and T23 series model matrix 146 Overall 147 AC adapters 156 LCD FRUs 157 Keyboard 160 Recovery CDs 161 Miscellaneous parts 170 Optional FRUs 171 Common parts list 172 Notices 174 Trademarks 174 vi ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 7
replacing parts Make sure that all diskette fixes are installed before replacing any FRUs listed in this manual. Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs: v If you are instructed to replace a FRU but the replacement does not correct the problem - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 8
are servicing. Diskette compatibility matrix The compatibility of each of the drives with the diskettes for it is as follows: Diskette drive 3.5-inch Diskette capacity 1.0 MB 2.0 MB 4.0 MB Compatibility Read and write Read and write Not compatible 2 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 9
Safety notices: multilingual translations In this manual, safety notices appear in English with a page number reference to the appropriate multilingual -on after FRU replacement, make sure all screws, springs, and other small parts are in place and are not left loose inside the computer. Verify this - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 10
battery as required by local ordinances or regulations. Use only the battery in the appropriate parts listing. Use of an incorrect battery can result in ignition or explosion of the battery. Certaines batteries Entzündung oder Explosion führen. (continued) 4 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 11
Safety notices (continuation of safety notice 2) Alcune batterie di riserva contengono una piccola quantità di nichel e cadmio. Non smontarle, ricaricarle, gettarle nel fuoco o nell'acqua né cortocircuitarle. Smaltirle secondo la normativa in vigore (DPR - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 12
only the battery in the appropriate parts listing when replacing the battery pack. Use of an incorrect battery can result in ignition or explosion of the battery. La batterie contient du l'incendio o l'esplosione della batteria stessa. (continued) 6 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 13
. Do not recharge it, remove its polarized connector, disassemble it, heat it above 100°C (212°F), incinerate it, or expose its cell contents to water. Dispose of the battery as required by local ordinances or regulations. Use only the battery in the appropriate parts listing. Use of an incorrect - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 14
Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim Ersetzen der Batterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgeführt ist. Der Einsatz sus celdas al agua. Deséchela tal como dispone la normativa local. 8 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 15
Safety notice 5 Safety notices If the LCD breaks and the fluid from inside the LCD gets into your eyes or on your hands, immediately wash the affected areas with water for at least 15 minutes. Seek medical care if any symptoms from the fluid are present after washing. Si le panneau d'affichage à - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 16
shock, do not remove the plastic cover that protects the lower part of the inverter card. Afin d'éviter tout parte inferiore della scheda invertitore. Para evitar descargas, no quite la cubierta de plástico que rodea la parte baja de la tarjeta invertida. 10 ThinkPad T20, T21, T22, T23 (MT 2647/2648 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 17
Kurzschluß oder Erdung genug Strom abgeben, um brennbare Materialien zu entzünden oder Verletzungen bei Personen hervorzurufen. Sebbene le batterie di alimentazione siano a basso voltaggio, una batteria in corto circuito o a massa può fornire corrente sufficiente da bruciare materiali combustibili - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 18
from electrical outlets, remove the battery pack, and then disconnect any interconnecting cables. Avant de retirer cables de las tomas de corriente eléctrica, quite la batería y, a continuación, desconecte cualquier cable de conexión entre dispositivos. 12 ThinkPad T20, T21, T22, T23 (MT 2647/2648 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 19
information that you need to be familiar with before servicing an IBM mobile computer. General safety Follow these rules to ensure not in a hazardous position. v Place removed covers and other parts in a safe place, away from all personnel, while you are servicing the machine. v Keep your toolcase - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 20
supplies - Removing or installing main units lock the wall box in the off position. v If you need to work on a machine that has exposed electrical circuits, observe the following precautions: - Ensure that another person, familiar with the power-off controls ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 21
set the controls instructions power extension cables, power surges service the following parts with the power on when they are removed from their normal operating places in a machine: - Power supply units - Pumps - Blowers and fans installed to protect users and service personnel from injury. This guide - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 22
electorostatic discharge Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD.) ESD damage can occur when there is a difference in charge between objects. Protect against ESD 16 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 23
strap against your skin to eliminate static on your body. v Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even as those listed below, to provide protection that meets the specific service requirement. Note The use of a grounding system is desirable - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 24
of Federal Regulations (DHHS 21 CFR) Subchapter J for Class 1 laser products. Elsewhere, the drive is certified to conform to the requirements of the International Electrotechnical Commission (IEC) 825 and CENELEC EN 60 825 for Class 1 laser products. 18 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 25
de los aquí especificados puede provocar la exposición a radiaciones peligrosas. Opening the CD-ROM drive, DVD-ROM drive or the other optical storage device could result in exposure to hazardous laser radiation. There are no serviceable parts inside those drives. Do not open. Introduction 19 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 26
Laser compliance statement Some CD-ROM drives, DVD-ROM drives, or other optical storage devices contain an embedded Class 3A or Class 3B laser diode. Note mire fijamente ni examine con instrumental óptico el haz de luz. Evite la exposición directa al haz. 20 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 27
particular computer. Read this first Before you go to the checkout guide, be sure to read this section. Important notes v Only certified trained personnel should service the computer. v Read the entire FRU removal and replacement page before replacing any FRU. v Use new nylon-coated screws when you - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 28
symptoms might indicate damage caused by nonwarranted activities: v Missing parts might be a symptom of unauthorized service or modification. v If the spindle of a hard-disk drive becomes noisy, it may have been subjected to excessive force, or dropped. 22 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 29
recover the new hard-disk drive with the pre-installed software when they arrive. For information on which CD to order, see "Recovery CDs" on page 161 The Product Recovery program is in the service partition, a section of the hard-disk drive that is not displayed by Windows Explorer. Attention: All - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 30
you want to recover. 5. Select the recovery options you want, and follow the instructions on the screen. 6. When the Product Recovery program finishes running, the computer will restart with the pre-installed operating system, drivers, and software. 24 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 31
, drivers, and software. Using the recovery CD To create the service partition and install the preloaded system from the recovery CD, do the following: To create the service partition: 1. Erase all partitions on the hard-disk drive, using FDISK or a similar application. 2. Boot with the recovery CD - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 32
. 2. Insert the Recovery Repair diskette into the drive, and then turn on the computer. 3. Follow the on-screen instructions. Passwords As many as three passwords may be needed for any ThinkPad computer: the power-on password (POP), the hard-disk password (HDP), and the supervisor password (SVP). If - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 33
set. If it has, it can be used for access to the hard-disk drive. If no master HDP is available, IBM does not provide any services to reset either the user or the master HDP, or to recover data from the hard-disk drive. The hard-disk drive can be replaced for a scheduled fee. Supervisor password - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 34
window, select Yes . How to remove the hard-disk password Attention: If User only mode is selected and the user HDP has been forgotten and cannot be made available to the servicer, IBM does not provide any services to reset the user HDPs or to recover data from the hard-disk drive. The hard - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 35
Related service information v The hard-disk drive motor stops. 3. If the time set on the "Turn off monitor" timer in the operating system expires, v The LCD backlight turns off. To end screen blank mode and resume normal operation, press any key. Standby mode When the computer enters standby mode, - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 36
computer to enter hibernation mode, do any of the following: v Press the Fn+F12 keys. v If you are using the APM operating system and have set the mode to Power switch mode [Hibernation], turn off the power switch. 30 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 37
APM operating system and have set the mode to Hibernate when battery becomes low, and the battery charge becomes critically low. When the power is turned on, the computer returns from hibernation mode and resumes operation. The hibernation file in the boot record on the hard-disk drive is read, and - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 38
TrackPoint. Instead of pressing Enter, click the left button. 1. Insert the PC-Doctor disk into the diskette drive; then power on the computer. If the computer cannot be powered on, go to "Power system checkout" on page 35, and check the power sources. 32 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 39
Devices in Diagnostics. v Video Adapter test supports only the LCD display on ThinkPad. Before running PC-Doctor DOS, detach the external Monitor. v To test ZIP Drive or LS-120/240 Drive, each media is needed to be inserted before start testing. v Wireless LAN test and 802.11 Wireless Radio Test is - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 40
PNPISA Info v SMBIOS Info v VESA LCD Info Utility v Run External Tests v Surface Scan Hard Disk v Benchmark System v DOS Shell v Tech Support Form v Battery Rundown v View Test Log v Print Log v Save Log v Full Erase Hard Drive v Quick Erase Hard Drive 34 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 41
Checkout guide To verify a symptom, do the following: 1. Power off the computer. 2. Remove the battery pack. 3. Connect the ac adapter. 4. Check that power is supplied when you power on the computer. 5. Power off the computer. 6. Disconnect the ac adapter and install the charged battery pack - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 42
pack and measure the voltage between battery terminals 1 (+) and 5 (−). See the following figure: 1(+) 5(-) 4 3 2 Terminal Voltage (V dc) 1 +0 to +12.6 5 Ground (−) 3. If the voltage is less than +11.0 V dc, the battery pack has been discharged. 36 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 43
ac adapter from it. 2. Turn the computer upside down. 3. Remove the battery pack (see "1010 Battery pack" on page 60.) 4. Remove the backup battery (see "Checking the battery pack" on page 36.) 5. Measure the voltage of the backup battery. See the following figure. Red (+) Black (-) Wire Red Black - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 44
Checkout guide 38 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 45
system unit 57 Retaining the UUID 57 Removing and replacing a FRU 59 1010 Battery pack 60 1020 Backup battery 61 1030 Hard-disk drive 63 1040 DIMM 65 1050 Mini PCI adapter 66 For T20, T21 and T22 series 66 For T23 series 68 1060 Ethernet daughter card 71 1070 Ultrabay 2000 device 73 1080 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 46
Parts list T20, T21, T22 and T23 series model matrix Overall For T20, T21 and T22 For T23 AC adapters LCD FRUs 13.3-in. XGA TFT 14.1-in. XGA TFT 14.1-in. SXGA+ TFT Keyboard Recovery CDs For Windows 98 (T22 series) . . . . . For Windows 2000 (T22 series) . . . . For Windows 2000/Windows - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 47
information: v "Specifications" v "Status indicators" on page 44 v "FRU Tests" on page 46 v "Fn key combinations" on page 48 Specifications The following table lists the specifications of the ThinkPad T20, T21, T22 and T23 series : Feature Processor Bus architecture Memory (standard) Description - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 48
v Microphone v Mouse or keyboard v Parallel or diskette drive v Port replicator connector v Serial v One universal serial bus (USB) connector for T20, T21, and T22 series v Two USB connectors for T23 v RJ11 v RJ45 (covered) v TV-out (continued) 42 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 49
control volume Infrared transfer IrDA 1.1 802.11b (only Mini PCI Type-IIIa IEEE 802.11b wireless LAN for T23 series) card PC Card One Type-III or two Type-II AC adapter 72-watt type Bay device T20 v 1.44 MB (3-mode), 3.5-inch diskette drive v 10-24x CD-ROM drive v 6x DVD-ROM drive T21, T22 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 50
678 Indicator 1 Drive in use Meaning Green: Data is being read from or written to the hard-disk drive, the diskette drive, or the drive in the Ultrabay Lock mode is enabled. To enable or disable Caps Lock mode, press Fn + Caps Lock key. (continued) 44 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 51
on 6 Battery 7 Standby status 8 Ultrabay status Product overview Meaning Green: Scroll Lock mode is enabled. Arrow keys can be used as screen-scroll function keys, but not to move the cursor. To enable or disable Scroll Lock mode, press Fn + ScrLk key. Not all application programs support this - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 52
problem. If the pointer stops after a short time, no service action is necessary. Hard-disk drive If enabling the TrackPoint does not correct the problem, continue with the following: v Interactive Tests --> Mouse Diagnostics --> Fixed Disks (continued) 46 ThinkPad T20, T21, T22, T23 (MT 2647 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 53
ROM, DVD, 1. Diagnostics --> Other Devices --> CD-RW or CD-ROM/DVD CD-RW/DVD combo drive 2. Interactive Tests --> CD-ROM/DVD Test Memory 1. If two DIMMs are installed, remove one of them and run Diagnostics --> Memory Test - Quick. 2. If the problem does not recur, return the DIMM to its place - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 54
button for less than four seconds. Note: To use Fn+F12 for hibernation in Windows 2000 and Windows XP, you must have IBM PM device driver installed on your computer. Turn the ThinkLight on or off. The LCD becomes brighter. The LCD becomes less bright. 48 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 55
go to "Intermittent problems" on page 55. Note For an IBM device not supported by diagnostic codes in the ThinkPad notebook computers, see the manual for that device. board. 0190 Critical low-battery error 1. Charge the battery pack. 2. Battery pack. ThinkPad T20, T21, T22 and T23 series 49 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 56
-Monitor type does not match the one specified in CMOS. Load Setup Defaults in IBM BIOS Setup Utility. 0230 Shadow RAM error-Shadow RAM fails at offset nnnn. System board. 0231 System RAM error-System RAM fails at offset nnnn. 1. DIMM. 2. System board. 50 ThinkPad T20, T21, T22, T23 (MT 2647 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 57
to reset the time and date. 1. Diskette drive. 2. External FDD cable. 3. I/O card. 1. Load Setup Defaults in IBM BIOS Setup Utility. 2. Replace the backup battery. 3. System board. 1. DIMM. 2. System board. 1. DIMM. 2. System board. 1. DIMM. 2. System board. ThinkPad T20, T21, T22 and T23 series 51 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 58
system. 5. Diskette drive. 6. Hard-disk drive. 7. System board. 1. Restore the system configuration to what it was before the computer entered hibernation mode. 2. If memory size has been changed, re-create the hibernation file. Fan. System board. 52 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 59
is set. Type the password and press Enter. The hard-disk password prompt A hard-disk password is set. appears. Type the password and press Enter. The DOS full screen looks smaller. Start the ThinkPad Configuration program and set the Screen expansion function. ThinkPad T20, T21, T22 and T23 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 60
notebook computer contains many thin-film transistors (TFTs). A small number of dots that are missing, discolored, or always lighted is characteristic of TFT LCD technology, but excessive pixel problems screen unreadable. v Characters missing pixels. v Screen ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 61
other external devices d. Battery pack e. Hard-disk drive f. External diskette drive g. DIMM h. CD-ROM and diskette drive in the Ultrabay i. PC Cards 4. Power on the computer. 5. Determine whether the problem has changed. 6. If the problem does not recur, reconnect the removed devices one at a time - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 62
(Cross-section) v Logic card to plastic Turn an additional 180 degrees after the screw head touches the surface of the logic card: 180 degrees more (Cross-section) v Torque driver If you have a torque driver, refer to the "Torque" column for each step. 56 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 63
serial number by doing the following: 1. Install the ThinkPad hardware maintenance diskette version 1.62 and restart the computer. 2. From the main menu, select 1. Set System Identification. 3. Select 1. Add S/N data from EEPROM. Follow the instructions on the screen. Note: The serial number of the - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 64
system board as follows: 1. Install the ThinkPad hardware maintenance diskette version 1.62, and restart the computer. 2. From the main menu, select 4. Assign UUID. A new UUID is created and written. If a valid UUID already exists, it is not overwritten. 58 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 65
service any computer unless you have been trained and certified. An untrained person runs the risk of damaging parts. 2. Before replacing any FRU, review "FRU replacement notices" on page 56. 3. Begin by removing any FRUs that have to be removed (P/N 6405959). ThinkPad T20, T21, T22 and T23 series 59 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 66
Removing and replacing a FRU 1010 Battery pack DANGER Use only the battery in the parts listing for your computer. Use of an incorrect battery can result in ignition or explosion of the battery. 2 1 60 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 67
the parts listing for your computer. Use of an incorrect battery can result in ignition or explosion of the battery. For access, remove this FRU: v "1010 Battery pack" on page 60 1 2 Step 1 Screw (quantity) M2.5 × 3.5 mm, (1) (continued) Torque 0.392 Nm (4 kgfcm) ThinkPad T20, T21, T22 and T23 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 68
Removing and replacing a FRU Cable routing: When attaching the backup battery to the holder, route the battery cable as in the following figure. 62 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 69
mode. For access, remove this FRU: v "1010 Battery pack" on page 60 1 Note: The hard disk is attached to the cover. Step Screw (quantity) 1 Coin screw (1) or security screw (1) Note: Use a 2.5-mm Allen wrench to remove the security screw. (continued) ThinkPad T20, T21, T22 and T23 series 63 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 70
Removing and replacing a FRU When removing the hard-disk drive, open the LCD a little as shown in the figure. 2 3 4 3 When installing: Make sure that the HDD connector is firmly connected. 64 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 71
not remove it. 1 2 4 3 3 When installing: With the notched end of the DIMM toward the socket, insert the DIMM into the socket, and then press it firmly. Pivot the DIMM until it snaps into place. Make sure that the card is firmly fixed in the slot and does not move easily. ThinkPad T20, T21, T22 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 72
Removing and replacing a FRU 1050 Mini PCI adapter For access, remove this FRU: v "1010 Battery pack" on page 60 For T20, T21 and T22 series Note: Loosen the screw 1 , but do not remove it. 1 2 (continued) 66 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 73
illustration shows the combo card. Connector (A) is for the LAN feature and (B) is for the modem feature. Disconnect either (A) or (B) in step 6 . This slot also supports a Mini PCI modem card or Mini PCI network card. 3 4 (B) (A) 4 (continued) 5 (B) 6 (A) ThinkPad T20, T21, T22 and T23 series 67 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 74
Removing and replacing a FRU When installing: Make sure not to pinch the connector cable when re-installing the Mini PCI adapter. For T23 series Note: Loosen the screw 1 , but do not remove it. 1 2 (continued) 68 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 75
AUX). 5 6 When installing: With the notched end of the card toward the socket, insert the card into the socket, and then press it firmly. Pivot the card until it snaps into place. Make sure that the card is firmly fixed in the slot and does not move easily. ThinkPad T20, T21, T22 and T23 series 69 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 76
; v All models of MT2647 excepting xQx, L4x v All models of MT2648 Other models do not have the Ethernet daughter card (EDC). For access, remove this FRU: v "1010 Battery pack" on page 60 Note: Loosen the screw 1 , but do not remove it. 1 2 (continued) 70 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 77
Removing and replacing a FRU 3 3 Step 3 Screw (quantity) M2.5 × 11.5 mm, nylon-coated (2) Torque 0.392 Nm (4 kgfcm) (continued) ThinkPad T20, T21, T22 and T23 series 71 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 78
Removing and replacing a FRU 4 5 6 When installing: Make sure that both of the connectors 4 and 6 are firmly attached. 72 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 79
installing and removing is the same for every device. Ultrabay 2000 also supports Ultrabay Plus device, such as Ultrabay Plus carrier. Note: When you release the switch in step 1 the lever pops out. Pull the lever a little in step 2 to release the device from the bay. 1 2 3 ThinkPad T20, T21, T22 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 80
and replacing a FRU 1080 Keyboard For access, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1070 Ultrabay 2000 device" on page 73 For T20, T21 and T22 series 1 Step 1 Screw (quantity) M2.5 × 14 mm, nylon - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 81
a FRU Note: Loosen the screw 2 , but do not remove it. 1 2 3 Step 1 Screw (quantity) M2.5 × 14 mm, nylon-coated (2) Torque 0.392 Nm (4 kgfcm) 4 Step 4 Screw (quantity) M2.5 × 11.5 mm, nylon-coated (1) Torque 0.392 Nm (4 kgfcm) (continued) ThinkPad T20, T21, T22 and T23 series 75 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 82
Removing and replacing a FRU Note: Step 5 to 10 are common for all models. 6 5 5 (continued) 76 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 83
Removing and replacing a FRU 8 9 7 9 8 7 10 9 (continued) ThinkPad T20, T21, T22 and T23 series 77 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 84
Removing and replacing a FRU Note: Before installing a new keyboard, attach the easy-button cover as follows: 4 1 32 1 (continued) 78 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 85
Removing and replacing a FRU When installing the keyboard, do as follows: 1. Install the new keyboard, following the directions in the figure. Make sure that the keyboard edges, shown in the figure as (A), (B), and (C), are under the frame. (A) (B) (C) (continued) ThinkPad T20, T21, T22 and T23 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 86
Removing and replacing a FRU 2. Insert your fingers into the PC Card slot on the left of the computer and the Ultrabay 2000 slot on the right of the Y key to connect the keyboard to the connector on the underside of the key 3 . 3 1 1 2 (continued) 80 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 87
strongly; to do so might cause distortion of the Ultrabay 2000 slot and the PC Card slot. (A) (B) 4. Replace the screws, using the new screws provided with the keyboard. Then press the Y key again, hard, to make sure that the keyboard is firmly connected. ThinkPad T20, T21, T22 and T23 series 81 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 88
drive" on page 63 v "1070 Ultrabay 2000 device" on page 73 v "1080 Keyboard" on page 74 Note: The shape of the keyboard CRU insulator varies from model to model. In some models, the shape might be slightly different from the insulator in this figure. 1 82 ThinkPad T20, T21, T22, T23 (MT 2647/2648 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 89
and replacing a FRU For access, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1070 Ultrabay 2000 device" on page 73 v "1080 Keyboard" on page 74 v "1090 Keyboard CRU insulator" on page 82 Note: Step 1 is - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 90
Torque 0.392 Nm (4 kgfcm) When installing: 1. Install the hinge cover according to the step 3 , 4 and then tighten the screw 2 . In step 3 , take care not to damage the lens. 2. Make sure that both latches a are firmly attached and snap into place. 84 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 91
For T22 series Removing and replacing a FRU 2 3 Step 2 Screw (quantity) M2.5 × 14 mm, nylon-coated (1) (continued) Torque 0.392 Nm (4 kgfcm) ThinkPad T20, T21, T22 and T23 series 85 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 92
Torque 0.392 Nm (4 kgfcm) When installing: 1. Install the hinge cover according to the step 5 , 6 and then tighten the screw 4 . In step 5 , take care not to damage the lens. 2. Make sure that both latches a are firmly attached and snap into place. 86 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 93
(1) Torque 0.392 Nm (4 kgfcm) When installing: 1. Install the hinge cover according to the step 3 , 4 and then tighten the screw 2 . In step 3 , take care not to damage the lens. 2. Make sure that both latches a are firmly attached and snap into place. ThinkPad T20, T21, T22 and T23 series 87 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 94
, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1070 Ultrabay 2000 device" on page 73 v "1080 Keyboard" on page 74 v "1090 Keyboard CRU insulator" on page 82 v "1100 Hinge cover" on page 83 For T20, T21 and T22 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 95
Removing and replacing a FRU 2 3 4 Step 2 Screw (quantity) M2.5 × 14 mm, nylon-coated (1) 3 M2.5 × 4.8 mm, nylon-coated (1) (continued) Torque 0.392 Nm (4 kgfcm) 0.392 Nm (4 kgfcm) ThinkPad T20, T21, T22 and T23 series 89 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 96
Removing and replacing a FRU For T23 series Note: Loosen the screw 1 , but do not remove it. 1 2 3 Step 3 Screw (quantity) M2.5 × 11.5 mm, nylon-coated (1) Torque 0.392 Nm (4 kgfcm) (continued) 90 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 97
Removing and replacing a FRU 4 Step 4 Screw (quantity) M2.5 × 3.5 mm, nylon-coated (3) (continued) Torque 0.392 Nm (4 kgfcm) ThinkPad T20, T21, T22 and T23 series 91 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 98
Removing and replacing a FRU 5 6 7 Step 5 Screw (quantity) M2.5 × 14 mm, nylon-coated (1) 6 M2.5 × 4.8 mm, nylon-coated (1) Torque 0.392 Nm (4 kgfcm) 0.392 Nm (4 kgfcm) 92 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 99
Removing and replacing a FRU When installing, do as follows: v Make sure that the a -part is firmly attached as shown in the figure. v Make sure that all of the latches of the keyboard bezel b are firmly attached. a b b b b ThinkPad T20, T21, T22 and T23 series 93 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 100
and replacing a FRU 1120 Fan assembly For T20, T21, T22 series For access, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1070 Ultrabay 2000 device" on page 73 v "1080 Keyboard" on page 74 v "1090 Keyboard CRU - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 101
Removing and replacing a FRU When installing the fan assembly: For T20 Remove the protective sheet from the thermal rubber on the fan assembly. For T21, T22 Apply the thermal grease (05K5751) on the a -part of the fan as shown in the following figure. a ThinkPad T20, T21, T22 and T23 series 95 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 102
T23 series For access, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1070 Ultrabay 2000 device" on page 73 v "1080 Keyboard" on page 74 v "1090 Keyboard CRU insulator" on page 82 v "1100 Hinge cover" on page - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 103
Removing and replacing a FRU 4 6 5 Step 4 Screw (quantity) M2.0 × 13.5 mm, nylon-coated (3) Torque 0.245 Nm (2.5 kgfcm) When installing: Apply the thermal grease (05K5751) on the a -part of the fan as shown in the following figure. a ThinkPad T20, T21, T22 and T23 series 97 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 104
of the arrow a to release the lock and then remove the CPU. 2 1 a b A c When installing: 1. When attaching the CPU to the socket, do as shown in the step c . 2. Rotate the head of the screw (A) to the direction of the arrow b to lock the CPU. 98 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 105
a or steps 1' , 2 and a' . Rotate the head of the screw to the direction of the arrow 1 or 1' to release the lock and then remove the CPU. 1 a 1' a' 2 When installing: Rotate the head of the screw to the direction of the arrow a or a' to lock the CPU. ThinkPad T20, T21, T22 and T23 series 99 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 106
replacing a FRU 1140 PC Card slot assembly For T20, T21, T22 series For access, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1070 Ultrabay 2000 device" on page 73 v "1080 Keyboard" on page 74 v "1090 Keyboard - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 107
Removing and replacing a FRU When installing the PC card slot assembly, do as shown in the figure. ThinkPad T20, T21, T22 and T23 series 101 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 108
T23 series For access, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1070 Ultrabay 2000 device" on page 73 v "1080 Keyboard" on page 74 v "1090 Keyboard CRU insulator" on page 82 v "1100 Hinge cover" on page - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 109
and replacing a FRU For access, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1070 Ultrabay 2000 device" on page 73 v "1080 Keyboard" on page 74 v "1090 Keyboard CRU insulator" on page 82 v "1100 Hinge cover - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 110
Removing and replacing a FRU Before installing new speaker for T22 and T23 series: Secure speaker RF bracket ( a ) to the new speaker with an adhesive tape inside of the bracket. For T22 series a For T23 series a 104 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 111
replacing a FRU 1160 Hard-disk bay For access, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1070 Ultrabay 2000 device" on page 73 v "1080 Keyboard" on page 74 v "1090 Keyboard CRU insulator" on page 82 v "1100 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 112
are only for T23 series) is not turned over. v Holes in the guide rail and in the aluminium sheet are aligned, and the aluminium sheet does not protrude in the c -parts. The protruding parts of the sheet can cause electrical short. a b c a b' a b' 106 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 113
Ultrabay 2000 slot For access, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1070 Ultrabay 2000 device" on page 73 v "1080 Keyboard" on page 74 v "1090 Keyboard CRU insulator" on page 82 v "1100 Hinge cover" on - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 114
Removing and replacing a FRU For T21 and T22 series 2 1 Note: T21 series do not have the removal procedure 3 and 4 . After step 2 , go to step 5 . When installing: Make sure that the FPC connector is firmly attached. (continued) 108 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 115
For T23 series 1 Removing and replacing a FRU 2 3 Step 1 Screw (quantity) M2 × 13.5 mm, nylon-coated (1) 2 M2.5 × 14 mm, nylon-coated (1) (continued) Torque 0.245 Nm (2.5 kgfcm) 0.392 Nm (4 kgfcm) ThinkPad T20, T21, T22 and T23 series 109 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 116
: The models with 13.3-in. XGA LCD in T20 series and in T21 series do not have FPC bracket ( 5 ). For those models, skip step 5 . 5 a When installing: Make sure that the FPC bracket is firmly attached as shown in the figure a . (continued) 110 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 117
T21, T22 and T23 series. 6 Step 6 Screw (quantity) M2.5 × 4.8 mm, nylon-coated (1) Torque 0.392 Nm (4 kgfcm) 7 8 9 Step 7 Screw (quantity) M2 × 13.5 mm, nylon-coated (2) 8 M2.5 × 4.8 mm, nylon-coated (2) Torque 0.245 Nm (2.5 kgfcm) 0.392 Nm (4 kgfcm) ThinkPad T20, T21, T22 and T23 series - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 118
FRU When installing: Make sure that the guide of the slot is firmly attached 1 and if the eject lever has been poped out, push it back in the direction of arrow 2 until it snaps, and then push the upper-right corner of the slot 3 to fix it firmly. 1 2 3 112 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 119
board For access, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1040 DIMM" on page 65 v "1050 Mini PCI adapter" on page 66 v "1060 Ethernet daughter card" on page 70 (only for T23 series) v "1070 Ultrabay - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 120
Removing and replacing a FRU When installing: Make sure that all of the guides are firmly attached 1 and you have fastened the connector firmly to the underside of the system board 2 . 1 2 1 1 114 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 121
For T23 series Removing and replacing a FRU 5 1 2 4 3 6 Step 5 Screw (quantity) M2.5 × 4.8 mm, nylon-coated (1) (continued) Torque 0.392 Nm (4 kgfcm) ThinkPad T20, T21, T22 and T23 series 115 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 122
Removing and replacing a FRU When installing: Make sure that all of the guides are firmly attached 1 and you have fastened the connector firmly to the underside of the system board 2 . 2 1 1 1 116 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 123
the secure chip. For access, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1040 DIMM" on page 65 v "1050 Mini PCI adapter" on page 66 v "1060 Ethernet daughter card" on page 70 v "1070 Ultrabay 2000 device - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 124
bay" on page 105 v "1170 Ultrabay 2000 slot" on page 107 v "1180 System board" on page 113 Cable routing: When replacing the cable, make sure the connector is firmly attached into place a . Cable slacking is only allowed at the b -part of the frame. b a 118 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 125
2010 LCD assembly For access, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1050 Mini PCI adapter" on page 66 v "1070 Ultrabay 2000 device" on page 73 v "1080 Keyboard" on page 74 v "1090 Keyboard CRU insulator - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 126
Removing and replacing a FRU For models excepting MT2647-xLx, xNx 4 2 4 3 Step 2 Screw (quantity) M2.5 × 14 mm, nylon-coated (1) 4 M2.5 × 4.8 mm, nylon-coated (2) Torque 0.392 Nm (4 kgfcm) 0.392 Nm (4 kgfcm) 120 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 127
For MT2647-xLx, xNx 5 4 Removing and replacing a FRU 2 5 3 Step 2 Screw (quantity) M2.5 × 14 mm, nylon-coated (1) 5 M2.5 × 4.8 mm, nylon-coated (2) Torque 0.392 Nm (4 kgfcm) 0.392 Nm (4 kgfcm) ThinkPad T20, T21, T22 and T23 series 121 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 128
CRU insulator" on page 82 v "1100 Hinge cover" on page 83 v "1110 Keyboard bezel" on page 88 v "1120 Fan assembly" on page 94 v "2010 LCD assembly" on page 119 2 1 1 1 Step 1 Screw (quantity) M2.5 × 4.8 mm, nylon-coated (3) Torque 0.392 Nm (4 kgfcm) 122 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 129
Inverter card Removing and replacing a FRU For access, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1070 Ultrabay 2000 device" on page 73 v "1080 Keyboard" on page 74 v "1090 Keyboard CRU insulator" on page - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 130
page 123 Remove the UltraPort adapter if it has been screwed onto the LCD. To do this, remove the screw from both side of the adapter as shown in the figure 1a . Remove the connector cover for the others as shown in the figure 1b . 1a 1b (continued) 124 ThinkPad T20, T21, T22, T23 (MT 2647/2648 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 131
2 2a Removing and replacing a FRU 2a 2a 2 2a Step Screw (quantity) Torque For 13.3-in. XGA LCD LG (05K9636), 14.1-in ), Hyundai (05K9940), DBU (05K9888), 14.1-in. SXGA+ LCD LG (46L2495) 2a M2 × 4 mm, nylon-coated (4) 0.245 Nm (2.5 kgfcm) (continued) ThinkPad T20, T21, T22 and T23 series 125 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 132
Removing and replacing a FRU 4 3 (continued) 7 5 5 6 126 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 133
Removing and replacing a FRU Cable routing: When installing the LCD, route the connector cable as in the following figure: ThinkPad T20, T21, T22 and T23 series 127 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 134
82 v "1100 Hinge cover" on page 83 v "1110 Keyboard bezel" on page 88 v "1120 Fan assembly" on page 94 v "2010 LCD assembly" on page 119 v "2020 Front bezel" on page 122 v "2030 Inverter card" on page 123 v "2040 LCD panel" on page 124 1 1 (continued) 128 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 135
Removing and replacing a FRU Strip off the insulation tapes 2 securing the antenna cables. 2 2 3 3 ThinkPad T20, T21, T22 and T23 series 129 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 136
antenna cable to projection ( 4 ) on the left corner of the rear cover. 4. Route the gray antenna cable to go through cable guides 5 . 5. Make sure that both of the cables are not twisted. 6. Stick insulation tapes 6 , 7 and 8 . 2 4 6 1 8 7 3 5 130 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 137
2060 Sub card Removing and replacing a FRU For access, remove these FRUs, in order: v "1010 Battery pack" on page 60 v "1020 Backup battery" on page 61 v "1030 Hard-disk drive" on page 63 v "1040 DIMM" on page 65 v "1050 Mini PCI adapter" on page 66 v "1070 Ultrabay 2000 device" on page 73 v "1080 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 138
is firmly attached. v Make sure that the eject lever is poped out b and then install the sub card. v Take care not to damage the switch on the sub card (A). v Make sure that the guide of the card is firmly attached c as shown in the figure. A c b 132 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 139
v ThinkPad Dock: FRU no. 08N1546 (PCI cover: FRU no. 05K6246) v ThinkPad Dock with extension plate: FRU no. 08N1537 (PCI cover: FRU no. 08N7317) Confirm the FRU no. of the ThinkPad Dock first and choose the proper PCI cover FRU for the ThinkPad Dock you are servicing. ThinkPad T20, T21, T22 and T23 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 140
Removing and replacing a FRU Note: The following illustration shows how to remove the PCI cover of ThinkPad Dock (FRU no. 08N1546). Do the same to remove the PCI cover of ThinkPad Dock with extension plate (FRU no. 08N1537). 1 1 2 (Bottom view) 134 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 141
no. 08N1546). The top cover and screw kit for ThinkPad Dock (FRU no. 12P4143) is not available for the ThinkPad Dock with extension plate (FRU no. 08N1537) . 1 (Rear view) Step 1 Screw (quantity) M2.5 × 4.8 mm (2) (continued) Torque 0.392 Nm (4 kgfcm) ThinkPad T20, T21, T22 and T23 series 135 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 142
Removing and replacing a FRU 2 2 2 (Bottom view) Step 2 Screw (quantity) M2.5 × 4.8 mm (8) (continued) Torque 0.392 Nm (4 kgfcm) 136 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 143
Removing and replacing a FRU Make sure that the system lock key A is set to the Unlock position. Release the front latches in step 3 , and then remove the top cover 4 . For step 5 , see the inside view, shown in the circle. 4 5 3 A ThinkPad T20, T21, T22 and T23 series 137 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 144
Removing and replacing a FRU When replacing the top cover, do the following: v Make sure that the springs are placed correctly. v Make sure that the device release lever is seated correctly. (continued) 138 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 145
Removing and replacing a FRU v Make sure that the release button works correctly. ThinkPad T20, T21, T22 and T23 series 139 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 146
4 Bay latch 5 Eject button 6 Ultrabay 2000 device Note: The Ultrabay 2000 accepts storage devices, such as a DVD drive or a CD-ROM drive. 7 TrackPoint pointing stick 8 TrackPoint buttons 9 ThinkPad button 10 Volume and mute buttons 1 10 2 9 3 8 7 4 5 6 140 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 147
4 Parallel connector 5 External-monitor connector 6 Modem connector 7 Ethernet connector 8 Power jack 9 Universal serial bus (USB) connector Locations Note: T23 series have two USB connectors. 10 External-input-device connector 1 2 3 4 5 6 7 8 9 10 ThinkPad T20, T21, T22 and T23 series 141 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 148
latches 4 Docking connector 5 Mini PCI card slot 6 DIMM 7 PC card slots 8 PC card eject button 9 Infrared port 10 Stereo headphone jack 11 Stereo line-in jack 12 Microphone jack 13 Hard-disk drive 14 LCD latches 3 2 1 4 5 6 7 8 9 14 10 11 12 13 142 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 149
T20, T21, T22 and T23 series includes several models. The following table summarizes the characteristics of each model, to help you determine which FRU in the part list meets your need. Model CPU T20 (Memory: 128 MB) 2647-21x, 61x CMG 650 2647-24x, 64x 2647-A1x 2647-31x 2647-2EY 2647-32x, 72x - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 150
Parts list Model CPU T21 (Memory: 128 MB) 2647-27x, 67x CMG 750 2647-2Ax, 6Ax 2647-4Bx, 8Bx 2647-47x, 49x, 87x, L7x 2648-47x, 87x 2647-4Ax, 8Ax CMG 800 2648-4Ax, 8Ax 2647-4Bx, 8Bx 2648-4Bx, 8Bx 2647-57x, 97x 2647-5Ax, 9Ax CMG 850 2647-5Bx, 9Bx T22 (Memory: 128 MB) 2647-3Cx, 7Cx 2647-3Ex, - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 151
, 8Mx, MMx 2648-4Mx, 8Mx 2647-4Qx, 8Qx *1 2647-4Nx, 8Nx, GNU, KNG, MNx 2648-4Nx, 8Nx 2647-4Rx, 8Rx Tual 2648-4Rx, 8Rx 1.2 2647-4Sx, 8Sx, BSx 2648-4Sx, 8Sx 2647-5Kx, 9Kx 2647-5Lx, 9Lx, DLT, HLU *2 Tual 1.13 Parts list Bay Mini PCI LCD device adapter HDD (**): Memory 256 MB CD- Modem 13 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 152
Parts list Model CPU Bay Mini PCI LCD device adapter HDD T23 (Memory: 128 MB) (**): Memory 256 MB 2647-5Mx, 9Mx Tual CD1.2 RW Modem 14.1-in. 48 GB SXGA+ 2647-5Nx, 9Nx, HNx, NNx *2 2647-5Fx, 9Fx, DFx *2 2647-5Dx, 9Dx *2 2647-5Hx, 9Hx *2 2647 146 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 153
Overall For T20, T21 and T22 24 23 22 21 20 19 18 l 4 17 16 h 15 14 k i 13 12 11 j 10 9 Parts list 1 a b 2 c d 3 e f g 5 6 7 8 ThinkPad T20, T21, T22 and T23 series 147 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 154
3 Fan assembly for T20 08K7066 Fan assembly for T21 04P3448 Fan assembly for T22 for 2647-3xx, 7xx, BxG 08K7268 for 2648-all 26P9317 for 2647-all except models 3xx, 7xx, BxG 4 PC Card slots 08K7064 5 I/O card 26P8023 I/O card with conformal coating 08K3373 6 Microphone cable assembly - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 155
11 Backup battery 02K6572 12 Cover, Mini PCI adapter slot 08K6091* 13 Speaker assembly 08K6089 14 64-MB SDRAM SO DIMM (PC100) OP 20L0264* 128-MB SDRAM SO DIMM (PC100) OP 20L0265* for other optional DIMM, see "Optional FRUs" on page 170. (continued) ThinkPad T20, T21, T22 and T23 series - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 156
T22 (models xEx, BxG, 6xx, PM5, T2x) Mini PCI combo card (3Com) OP for T22 (2647-4Gx, 8Gx, MxU) 22P6753* Mini PCI Ethernet card OP for T20 (2647-45G, 45U) 10L1423* for other optional Mini PCI adapter, see "Optional FRUs" on page (continued) 150 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 157
button cover for T22 26P9183 24 Bracket, LCD FPC 26P9178 - Shield, Mini PCI - Blank cap for RJ45 (for T20) 04P3975 - Telephone cable (San Tai) 27L0603 - Recovery CD (see "Recovery CDs" on page 161.) - AC adapter* (see "AC adapters" on page 156.) ThinkPad T20, T21, T22 and T23 series 151 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 158
Parts list For T23 k 23 22 21 20 19 18 c j 17 16 15 14 i 25 24 13 12 11 h 10 9 1 a b 2 3 4 d e f g 5 6 7 8 152 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 159
(all models except xxK) 46P2611 for models xxK 46P2612 3 Fan assembly for T23 26P9166 4 PC Card slots for T23 26P9165 5 I/O card assembly for T23 26P8006 6 Microphone cable assembly 27L0520 7 Base cover for 2647 (T23) for models except xJx, xFx, xLx, xNx, xSx, 26P9158 xxC, xxK, xxT for - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 160
models except xKx, xQx, L4x 02K7026* for models xxE, xxJ except xKE, xKJ 02K7030* Battery pack, SANYO 2.0 Ah OP for all models except xKx, xQx, L4x 02K7028* for models xxE, xxJ except xKE, xKJ 02K7032* 11 Backup battery 02K6572 (continued) 154 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 161
* Hard-disk drive (48.0 GB), STD OP 08K9599* Hard-disk drive (60.0 GB), STD OP 08K9700* 20 Cover, hard-disk drive for T23 26P9543* 21 Keyboard* (see "Keyboard" on page 160.) 22 Pointing stick cap 84G6536* 23 Easy button cover 26P9536 (continued) ThinkPad T20, T21, T22 and T23 series - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 162
Parts list No. FRU P/N 24 Ethernet daughter card (Ambit) OP for all models except 2647-xQx 26P8181 25 Secure chip OP 26P8084 for 2647-5xx except 5Kx, 9xx except 9Kx for 2647-HNx, xLx - Telephone cable (SAN TAI) 27L0603 - Recovery CD (see "Recovery CDs" on page 161.) - AC adapter* (see " - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 163
kit (13.3-in.) XGA (except models 08K6685 xxK) models xxK 08K6764 2 LCD cable assembly 13.3 27L0562 3 LCD panel, 13.3 XGA (LG) 05K9636 4 Hinges 08K6087 5 not available for this model - 6 not available for this model - 7 Inverter card 10L1402 ThinkPad T20, T21, T22 and T23 series 157 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 164
Weight for T22, T23 46L2292 LCD panel, 14.1 XGA (DBU) Light Weight for 05K9888 T22, T23 4 Hinges 08K6087 Hinges for antenna 26P9196 5 Antenna assembly 26P9197 6 Thermal hinge (only for 2647-52x, 92x, C2x, 08K6353 L1x) 7 Inverter card 10L1402 158 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 165
panel, 14.1 SXGA+ (HITACHI) LCD panel, 14.1 SXGA+ (LG) 4 Hinges Hinges for antenna 5 Antenna assembly 6 not available for this model 7 Inverter card Parts list P/N 26P9383 26P9385 46L4910 46L4911 27L0590 46L2493 46L2495 08K6087 26P9196 26P9197 - 10L1402 ThinkPad T20, T21, T22 and T23 series 159 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 166
Parts list Keyboard Language Arabic Belgian Chinese, traditional Czech Danish Dutch English, U.K. English, 02K5742* 02K5748* 02K5754* 02K5756* 02K5740* 02K5743* 02K5736* 02K5741* 02K5757* 02K5746* P/N (ALPS) - - 02K5718 02K5701* 02K5715 02K5728* - 160 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 167
Recovery CDs For Windows 98 (T22 series) Language Arabic Chinese, Simplified Chinese, Traditional Czech Danish Dutch English, U.K. English, U.S. Finnish French, Canadian French, European German Greek Hebrew Hungarian Italian Japanese Norwegian Polish - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 168
Parts list For Windows 2000 (T22 series) Language Arabic Czech Greek Hebrew Hungarian Polish Russian Slovak Slovenian Turkish P/N 14P9525* 14P9526* 23P9218* 14P9527* 23P9219* 14P9528* 23P9220* 23P9222* 23P9221* 14P9529* For Windows 2000/Windows NT (T22 162 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 169
Slovak Slovenian Spanish, European Spanish, Latin American Swedish Thai Turkish Parts list P/N 14P9202* 14P9201* 46P4518* 46P4514* 46P6327* 14P9203* 46P4419* 14P9200* 14P9205* 14P9191* 14P9209* 14P9211* 14P9210* 14P9195* 14P9190* 14P9196* 14P9212* 14P9206* ThinkPad T20, T21, T22 and T23 series 163 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 170
Parts list For Windows 2000 (T23 series) Language Arabic Chinese, Simplified Chinese, Traditional Chinese, Traditional (Hong Kong S.A.R.) * 32P6638* 32P6635* 32P6639* 32P6629* 32P6632* 32P6636* 32P6623* 32P6640* 32P6627* 32P6622* 32P6628* 32P6637* 164 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 171
Parts list For Windows 2000/Windows NT (T23 series) Language Danish Dutch English, U.K. English, U.S. French, Canadian French, European Finnish 32P5576* 14P9288* 14P9292* 14P9297* 14P9293* 14P9296* 46P4421* 32P5742* 14P9290* 14P9294* 14P9289* 14P9295* ThinkPad T20, T21, T22 and T23 series 165 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 172
Parts list For Windows XP (T23 series) Language Arabic Chinese, Simplified Chinese, Traditional Chinese, Traditional (Hong Kong S.A.R.) 32P6741* 32P6738* 32P6742* 32P3732* 46P4457* 32P6735* 32P6739* 32P6726* 32P6743* 32P6730* 32P6725* 32P6731* 32P6740* 166 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 173
) (10) v Screw caps (not painted) (5) 26P9654 Base miscellaneous parts for T20, T21, T22 and T23 series: v Cover, RF ID v Spring, battery lock v Lid, docking FR v Lid, docking RR v Spring, lid docking v Spring, lid PC card v Lid, PC card v ESD plate, audio v Insulator for base cover v Eject lever - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 174
k. System miscellaneous parts for T22 series: v (a) Hinge cover assembly v (23) Easy button cover v (i) I/O card spacer v (h) Cable RJ11 to system board docking v (j) Holder, backup battery v (g) Ultrabay 2000 guide rail v (l) Hard-disk bay guide rail v (b) Insulator, keyboard CRU v (c)ESD fan cover - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 175
FRU System miscellaneous parts for T23 series: v (a) Hinge cover assembly v (23) Easy button cover T23 v (g) I/O card spacer v (f) Cable RJ11 to system board docking v (h) Holder, backup battery v (e) Ultrabay 2000 guide rail v (j) Hard-disk bay guide rail v (b) Insulator, keyboard CRU v (k) ESD - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 176
card v Insulator, battery latch v Keyboard connector guide v Shock rubber v Insulator, docking connector v Insulator, Ultrabay 2000 bay connector v Insulator, I/O connector v Insulator, hard-disk drive v Shield, Mini PCI v Insulator, guide (continued) 170 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 177
extension plate PCI cover with foot Top cover and screw kit for ThinkPad Dock ThinkPad Port Replicator Diskette drive cable Conversion adapter for diskette drive cable Video cable Telephone cable Parts list P/N 05K9235* 27L3450* 08K9615* 00N8254* 02K6645* 08K6067* 05K9227* 05K9228* 08K9508* 05K9229 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 178
parts list Tools Triconnector wrap plug 72X8546 PC test card 35G4703 Audio wrap cable 66G5180 USB parallel test cable 05K2580 Screwdriver kit 95F3598 Torque screwdriver 05K4695 5 mm socket wrench 05K4694 Screwdriver 27L8126 ThinkPad * 172 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 179
Parts list Power cords (docking station) IBM power cords for a specific country or region are usually available only in that country or 36L8868* 75H8988* 75H8989* 75H8992* 75H8990* 75H8993* 75H8999* 75H8998* 75H8996* 76H3536* 02K0540* 75H8997* 75H8994* ThinkPad T20, T21, T22 and T23 series 173 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 180
United States and/or other countries. (For a complete list of Intel trademarks, see the legal information on http://www.intel.com/) Other company, product, or service names may be the trademarks or service marks of others. 174 ThinkPad T20, T21, T22, T23 (MT 2647/2648) - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 181
Notices ThinkPad T20, T21, T22 and T23 series 175 - Lenovo ThinkPad T21 | T20, T21, T22, T23 - Hardware Maintenance Manual (April 20 - Page 182
Part Number: 62P9631 (1P) P/N: 62P9631
IBM Mobile Systems
ThinkPad Computer
Hardware Maintenance Manual
April 2002
This manual supports:
ThinkPad T20, T21, T22, T23
(MT 2647/2648)
ThinkPad Dock
(MT 2631)
±²³