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Lenovo ThinkPad T540p W540 W541

Tags : LenovoThinkPadT540pW540W54120BE20BF20BG20BH20EF20EG 
Lenovo ThinkPad T540p W540 W541 Hardware Maintenance Manual

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Description

Lenovo ThinkPad T540p W540 W541 Hardware Maintenance Manual
Fourth Edition (July 2015) - 118 pages

This manual contains service and reference information for the following ThinkPad® products.

ThinkPad T540p Machine Types (MT) 20BE and 20BF

ThinkPad W540 MT 20BG and 20BH

ThinkPad W541 MT 20EF and 20EG

Use this manual along with the advanced diagnostic tests to troubleshoot problems.

Contents
About this manual. . . . . . . . . . . iii
Chapter 1. Safety information. . . . . . 1
General safety . . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . . 1
Safety inspection guide . . . . . . . . . . . . 2
Handling devices that are sensitive to electrostatic
discharge. . . . . . . . . . . . . . . . . . 3
Grounding requirements . . . . . . . . . . . . 4
Safety notices (multilingual translations) . . . . . . 4
Chapter 2. Important service
information . . . . . . . . . . . . . . 19
Strategy for replacing FRUs . . . . . . . . . 19
Strategy for replacing a hard disk drive or a
solid-state drive . . . . . . . . . . . . 19
Important notice for replacing a system
board . . . . . . . . . . . . . . . . 20
How to use error message . . . . . . . . 20
Strategy for replacing FRUs for CTO, special-bid,
and standard models . . . . . . . . . . . . 20
Product definition. . . . . . . . . . . . 20
FRU identification. . . . . . . . . . . . 20
Chapter 3. General checkout . . . . . 23
What to do first . . . . . . . . . . . . . . 23
Checkout guide . . . . . . . . . . . . . . 24
Lenovo Solution Center . . . . . . . . . 24
Quick test programs. . . . . . . . . . . 24
UEFI diagnostic program . . . . . . . . . 25
Bootable diagnostic programs. . . . . . . 26
Power system checkout . . . . . . . . . . . 26
Checking the ac power adapter . . . . . . 27
Checking the battery and operational
charging . . . . . . . . . . . . . . . 27
Checking the coin-cell battery . . . . . . . 28
Chapter 4. Related service
information . . . . . . . . . . . . . . 29
Restoring the factory contents by using the
Recovery Disc Set . . . . . . . . . . . . . 29
Using the Windows recovery solutions (for
Windows 8 and Windows 8.1 only) . . . . . . . 30
Refreshing your computer . . . . . . . . 30
Resetting your computer to the factory default
settings. . . . . . . . . . . . . . . . 31
Using the advanced startup options . . . . 31
Using the Windows recovery environment . . 32
Creating and using recovery media . . . . . 32
Recovery overview for the Windows 10 operating
system. . . . . . . . . . . . . . . . . . 33
Resetting your computer . . . . . . . . . 33
Using advanced startup options . . . . . . 33
Recovering your operating system if Windows
10 fails to start . . . . . . . . . . . . . 34
Creating and using a recovery USB drive . . 34
Passwords . . . . . . . . . . . . . . . . 35
Power-on password . . . . . . . . . . . 35
Hard disk password . . . . . . . . . . . 35
Supervisor password . . . . . . . . . . 35
How to remove the power-on password . . . 35
How to remove the hard disk password . . . 36
Power management . . . . . . . . . . . . 36
Screen blank mode (for Windows 7 only) . . 37
Sleep mode . . . . . . . . . . . . . . 37
Hibernation mode . . . . . . . . . . . 37
Symptom-to-FRU index . . . . . . . . . . . 38
Numeric error codes . . . . . . . . . . 38
Error messages . . . . . . . . . . . . 39
Beep symptoms . . . . . . . . . . . . 40
No-beep symptoms . . . . . . . . . . . 40
LCD-related symptoms . . . . . . . . . 40
Intermittent problems . . . . . . . . . . 41
Undetermined problems . . . . . . . . . 41
Chapter 5. Status indicators . . . . . 43
Chapter 6. Function keys . . . . . . . 45
Chapter 7. Locations . . . . . . . . . 47
Locating computer controls, connectors, and
indicators. . . . . . . . . . . . . . . . . 47
Front view. . . . . . . . . . . . . . . 47
Rear view . . . . . . . . . . . . . . . 48
Bottom view . . . . . . . . . . . . . . 48
Locating FRUs and CRUs . . . . . . . . . . 49
Major FRUs . . . . . . . . . . . . . . 50
LCD FRUs . . . . . . . . . . . . . . 52
Miscellaneous parts and other FRUs . . . . 53
Looking up FRU information . . . . . . . . . 53
Chapter 8. FRU replacement
notices . . . . . . . . . . . . . . . . 55
Screw notices . . . . . . . . . . . . . . . 55
Retaining serial numbers. . . . . . . . . . . 56
Restoring the serial number of the system
unit . . . . . . . . . . . . . . . . . 56
Retaining the UUID . . . . . . . . . . . 57
Reading or writing the ECA information . . . 57
Chapter 9. Removing or replacing a
FRU . . . . . . . . . . . . . . . . . . 59
General guidelines . . . . . . . . . . . . . 59
Common service tools . . . . . . . . . . . 60
Before servicing the computer . . . . . . . . 60
Removing the SIM card . . . . . . . . . 60
1010 Battery pack . . . . . . . . . . . . . 60
1020 ExpressCard reader or dummy
ExpressCard . . . . . . . . . . . . . . . 61
1030 Large bottom door . . . . . . . . . . . 62
1040 Hard disk drive or solid-state drive . . . . 62
1050 Optical drive . . . . . . . . . . . . . 63
1060 Memory module . . . . . . . . . . . . 64
1070 Small bottom door . . . . . . . . . . . 65
1080 Wireless LAN card . . . . . . . . . . . 66
1090 Wireless WAN card or M.2 solid-state drive . 67
1100 Coin-cell battery. . . . . . . . . . . . 69
1110 Keyboard . . . . . . . . . . . . . . 70
1120 Keyboard bezel assembly . . . . . . . . 75
1130 Power button card, color sensor, NFC card,
fingerprint reader, and trackpad . . . . . . . . 77
1140 Smart card reader or dummy smart card . . 82
1150 LCD unit . . . . . . . . . . . . . . . 84
1160 Magnesium structure frame . . . . . . . 87
1170 Speaker assembly . . . . . . . . . . . 88
1180 dc-in cable assembly . . . . . . . . . . 89
1190 Thermal fan assembly . . . . . . . . . 90
1200 USB card . . . . . . . . . . . . . . 92
1210 Microprocessor . . . . . . . . . . . . 92
1220 System board and base cover . . . . . . 93
2010 LCD front bezel . . . . . . . . . . . . 96
2020 LCD panel, hinges, and LCD cable . . . . 97
2030 Camera-and-microphone card and
camera-and-microphone cable . . . . . . . . 102
2040 Antenna kit and LCD rear cover assembly . . 103
Appendix A. Notices. . . . . . . . . 107
Electronic emissions notices . . . . . . . . . 108
Trademarks . . . . . . . . . . . . . . . . 108
Appendix B. Abbreviation table . . . 109



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