Lenovo A540 Lenovo A540/A740 Hardware Maintenance Manual
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- Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 1
Lenovo A540/A740Hardware Maintenance Manual Machine Types: F0AN [A540];F0AM [A740] - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 2
- Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 3
Lenovo A540/A740 Hardware Maintenance Manual Machine Types: F0AN [A540];F0AM [A740] - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 4
First Edition (March 2014)6th © Copyright Lenovo 2014. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software are delivered pursuant a General Services Administration "GSA" contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925 - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 5
problems 20 Chapter 7. Replacing hardware . . . . 21 General information 21 Replacing the keyboard and mouse 22 Replacing the power cord or power adapter . . . 22 Removing the base cover 23 Replacing the hard disk drive 24 Replacing a memory module 26 Replacing the system fan 27 Replacing - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 6
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manual This manual contains service and reference information for Lenovo A540/A740 computers listed on the cover. It is intended only for trained servicers who are familiar with Lenovo computer products. Before servicing a Lenovo in this manual before following any of the instructions. Veuillez lire - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 8
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are servicing the computer. • Keep your tool case away from areas that people may walk through to ensure no-one After service, reinstall all safety shields, guards, labels, and ground wires. Replace any instructed otherwise in the installation and configuration procedures. © Copyright Lenovo 2014 3 - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 10
Field Replaceable Use only one hand when instructions not service the fans - Motor generators and similar units. (This practice ensures correct grounding of the units.) • If an electrical accident occurs: - Use caution; do not become a victim yourself. 4 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 11
to protect users and service personnel from injury. This guide addresses only those items. can continue without first resolving the problem. Consider the following items and the are all at the same charge. Notes: 1. Use product-specific ESD procedures when they exceed the requirements noted here. 2. - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 12
specific service use one hand only instructed otherwise in the installation and configuration procedures. • Connect and disconnect cables as described in the following table when installing, moving, or opening covers on this product or attached devices. 6 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 13
module containing a lithium battery, replace it only with the same module 100°C (212°F) • Repair or disassemble Dispose of the battery as required by local ordinances or (such as CD-ROMs, DVD-ROM drives, fiber optic devices, or transmitters) laser radiation. There are no serviceable parts inside the device. - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 14
have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source. CAUTION: Do not place any object weighing more than 82 kg (180 lbs.) on top of rack-mounted devices. 8 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 15
computer models covered by this manual. Specifications This section lists the physical specifications for your computer. This section lists the physical specifications for your computer. Type Lenovo A540/A740 This section lists the physical specifications. Environment Air temperature: Operating: 10 - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 16
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If one of the following happens, follow the instruction given: • If the computer displays a POST error, go to "POST error codes". • If the computer hangs and no error is displayed, continue at step 7. 7. If the test stops and you cannot continue, replace the last device tested. © Copyright Lenovo - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 18
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this procedure, shut down the operating system and turn off the computer. 2. Press and hold the F1 key then turn on the computer. When the Lenovo BIOS Setup Utility program is displayed, release the F1 key. Note: If a Power-On Password or an Administrator Password has been set, the Setup Utility - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 20
cannot start the Lenovo BIOS Setup Utility program until a valid password is typed from the keyboard. Setting, changing, or deleting a Power-On Password Note: A password can be any combination of letters and numbers up to 16 characters (a-z and 0-9). 14 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 21
-On Password, do the following: 1. Start the Lenovo BIOS Setup Utility program (See "Starting the Lenovo BIOS Setup Utility program" on page 13.) 2. From all devices connected to the SATA connectors (e.g. hard disk drives or the optical disk drive) are disabled and cannot be accessed. Onboard Audio - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 22
Device driver support is required for ACHI. Depending on how the hard disk image was installed, changing this setting may prevent the system from booting. Selecting a startup device If your computer does not boot from a device such as the CD/DVD-ROM drive disk or hard disk as expected, follow one of - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 23
Utility program After you finish viewing or changing settings, press the Esc key to return to the Lenovo BIOS Setup Utility program main menu. You might have to press the Esc key several times. Do one of the following: • If you want to save the new settings, select Save changes and Exit from - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 24
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an operating 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. Use the operating system to format the hard disk drive. Replace the hard disk drive. Power Supply Problems Follow these procedures if you suspect - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 26
disk drive f. Disk drive 3. Power-on the computer to re-test the system. 4. Repeat steps 1 through 3 until you find the failing device or component. If all devices and components have been removed and the problem continues, replace the system board. 20 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 27
your computer. To obtain copies of the Safety and Warranty Guide, go to the Support Web site at: http://consumersupport.lenovo.com. Note: Use only parts provided by Lenovo. General information Pre-disassembly instructions Before starting the disassembly procedure, make sure that you do the following - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 28
to a USB connector on one side or at the rear replace the power cord and power adapter: Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices. 22 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 29
the computer face-down on a soft flat surface for this procedure. Lenovo recommends that you use a blanket, towel, or other soft cloth to Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all 7. Replacing hardware 23 - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 30
flat surface, then secure the base cover to the base with the 8 screws. Replacing the hard disk drive Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the the base cover. Refer to "Removing the base cover". 24 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 31
Step 5. Remove the 4 screws that secure the hard disk drive to the motherboard. Step 6. Disconnect the data and power cable from the hard disk drive. Chapter 7. Replacing hardware 25 - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 32
cable to the new hard disk drive and motherboard. c. Secure the new hard disk drive to chassis with the 2 screws. Step 9. Reattach the base cover and secure it with the screws. Replacing a memory module cover. Refer to "Removing the base cover". 26 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 33
and wait 3 to 5 minutes to let it cool down before removing the cover. To replace the system fan Step 1. Step 2. Step 3. Step 4. Step 5. Step 6. Remove any media (disks, CDs, DVDs or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 34
To replace the heat-sink: Step 1. Step 2. Step 3. Step 4. Step 5. Step 6. Remove any media (disks, CDs, DVDs or memory cards) from the drives, fan. Refer to "Replacing the system fan". Remove the 8 screws that secure the heat-sink to the motherboard. 28 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 35
heat-sink and CPU. Step 8. Use fan to the new heat-sink and secure it with the screws. Step 11. Reattach the base cover and secure it with the screws. Replacing replace the speaker system: Step 1. Step 2. Step 3. Step 4. Step 5. Remove any media (disks, CDs, DVDs, or memory cards) from the drives - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 36
the base cover". Remove a memory module. Refer to "Replacing a memory module". Remove the system fan. Refer to "Replacing the system fan". Remove the heat-sink. Refer to "Replacing the heat-sink". Remove all the cables connected to the motherboard. 30 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 37
Step 2. Step 3. Step 4. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices. Unplug all power cords from Remove the base cover. Refer to "Removing the base cover". Chapter 7. Replacing hardware 31 - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 38
cover Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. To remove the rear cover 32 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 39
Step 4. Step 5. Step 6. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices. Unplug all power cords Remove the 2 screws that secure the LED panel to the rear cover. Chapter 7. Replacing hardware 33 - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 40
Step 7. Slide the LED panel upward from the bottom (with "Lenovo" logo) of the panel. 34 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 41
and wait 3 to 5 minutes to let it cool down before removing the cover. To replace the transform board Step 1. Step 2. Step 3. Step 4. Step 5. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 42
cover. To replace the Wi-Fi card: Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices. Step 2. Unplug all power cords from electrical outlets. 36 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 43
off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. To replace the power switch board Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices. Step 2. Unplug - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 44
cables to the motherboard. Step 12. Reattach the base cover and secure it with the screws. Replacing the NFC module Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. To replace the Bluetooth module: 38 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 45
, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the is glued to the rear cover, using a flat head screw driver gently to remove the module from the rear cover. Step 9. secure it with the screws. Replacing the camera Note: Turn off the computer and wait 3 - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 46
any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all Replacing the LED panel Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. 40 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 47
Lenovo recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches or other damage. To replace the LED panel: Step 1. Step 2. Step 3. Step 4. Step 5. Step 6. Step 7. Step 8. Remove any media (disks, CDs, DVDs, or memory cards) from the drives - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 48
C A540 W8S I7-4558 UMA W/TV C A540 W8S I3-4158 DIS W/O TV C A540 W8S I5-4258 DIS W/O TV C A540 W8S I7-4558 DIS W/O TV C A540 W8S I3-4158 DIS W/TV C A540 W8S I5-4258 DIS W/TV C A540 W8S I7-4558 DIS W/TV C A540 W8P I3-4158 UMA W/O TV C A540 W8P I5-4258 UMA W/O TV C A540 W8P I7-4558 UMA W/O TV Service - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 49
A540 W8P I5-4258 UMA W/TV 5B20F62991 N C A540 W8P I7-4558 UMA W/TV 5B20F62980 N C A540 W8P I3-4158 DIS W/O TV 5B20F62969 N C A540 W8P I5-4258 DIS W/O TV 5B20F62996 N C A540 W8P I7-4558 DIS W/O TV 5B20F62976 N C A540 150w common adapter 36200463 1 Chapter 7. Replacing hardware 43 - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 50
BSMI Power Cord® 31026349 1 VL BLK1.8m BSMI Power Cord® 31026146 1 1.8米 C13 31502867 1 LW BLK1.8m SABS Power Cord® 31031394 1 豪利士1.8米C13 31049509 1 1.8米 C13 31502865 1 44 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 51
SK-8861(KR) 2.4G KB-Metal8 25216036 2 Liteon SK-8861(JP) 2.4G KB-Metal8 25216037 2 Liteon SK-8861(EN-FR) 2.4G KB-Metal8 25216038 2 Chapter 7. Replacing hardware 45 - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 52
Main+AUX 5A30F63288 N CONNECTOR CONNECTOR TV JACK,C,A540,F 5CA0F63309 N CONNECTOR CONNECTOR TV JACK,C,A540,P 5CA0F63289 N A740 FRU lists This chapter lists the information on the field replaceable units (FRUs) for A540 All-In-One computers. 46 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 53
,W/O TV C,A540,NOK,I7-4558, DIS,W/O TV C,A540,NOK,I3-4158, DIS,W/TV C,A540,NOK,I5-4258, DIS,W/TV C,A540,NOK,I7-4558, DIS,W/TV C,A540,W8S,I3-4158, DIS,W/O TV C,A540,W8S,I5-4258, DIS,W/O TV C,A540,W8S,I7-4558, DIS,W/O TV C,A540,W8S,I3-4158, DIS,W/TV C,A540,W8S,I5-4258, DIS,W/TV C,A540,W8S,I7-4558, DIS - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 54
N BDPLANAR C A740 W8P I5-4258 DIS Q W/TV 5B20F65660 N BDPLANAR C A740 W8P I7-4558 DIS Q W/TV 5B20F65655 N RAM 4G M471B5173QH0-YK0 4GB D3L-1600S内存-HF 1100906 N USB 20200052 N RTL8723AS-VAU 1x1bgn BT4.0 Combo USB 20200052 N 48 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 55
电源线® 31036980 1 豪利士1.8米C13 31049515 1 1.8米 C13 31502869 1 1.8m C13 Brazil电源线® 31038784 1 豪利士1.8米C13 31049513 1 1.8米 C13 31502862 1 1.8m C13 Korea电源线® 31026351 1 VL BLK1.8m KTL Power Cord® 31026143 1 Chapter 7. Replacing hardware 49 - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 56
SM-8861 MC(No BTY) improved silver 25216336 2 DISPLAY Module C A740 27 TS FHD AUO 5D10F65678 N DISPLAY Module C A740 27 TS QHD SAM 5D10F65670 N 50 Lenovo A540/A740Hardware Maintenance Manual - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 57
90205307 N Fan Fan A540 Delta Fan 90205304 N A540 Sunon Fan 90205305 N MECHANICAL MECHANICAL Power Board Bracket ,C,A540 5M20F63298 N N CONNECTOR CONNECTOR TV JACK,C,A540,F 5CA0F63309 N CONNECTOR CONNECTOR TV JACK,C,A540,P 5CA0F63289 N Chapter 7. Replacing hardware 51 - Lenovo A540 | Lenovo A540/A740 Hardware Maintenance Manual - Page 58
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that the service representative might find helpful. Power management Power management reduces the power consumption of certain components of the computer such as the system power supply, processor, hard disk drives, and some monitors. Advanced configuration and power interface (ACPI) BIOS As this
Lenovo A540/A740Hardware Maintenance
Manual
Machine Types: F0AN [A540];F0AM [A740]