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Lenovo ThinkPad L440 L540

Tags : LenovoThinkPadL440L54020AV20AU20AT20AS 
Lenovo ThinkPad L440 L540 Hardware Maintenance Manual

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Description

Lenovo ThinkPad L440 L540 Hardware Maintenance Manual
Fourth Edition (July 2015)  - 142 pages

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

ThinkPad L440 Machine Type (MT) 20AS and 20AT
ThinkPad L540 MT 20AU and 20AV

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 . . . . . . . . . . . . . . . 2
Safety inspection guide . . . . . . . . . . . . 3
Handling devices that are sensitive to electrostatic
discharge. . . . . . . . . . . . . . . . . . 3
Grounding requirements . . . . . . . . . . . . 4
Safety notices (multilingual translations) . . . . . . 4
Laser compliance statement (multilingual
translations) . . . . . . . . . . . . . . . . 19
Chapter 2. Important service
information . . . . . . . . . . . . . . 25
Strategy for replacing FRUs . . . . . . . . . 25
Strategy for replacing a hard disk drive, a
solid-state drive, or an M.2 solid-state drive . 26
Important notice for replacing a system
board . . . . . . . . . . . . . . . . 26
How to use error message . . . . . . . . 26
Strategy for replacing FRUs for CTO, special-bid,
and standard models . . . . . . . . . . . . 26
Product definition. . . . . . . . . . . . 26
FRU identification . . . . . . . . . . . 27
Chapter 3. General checkout . . . . . 29
What to do first . . . . . . . . . . . . . . 29
Checkout guide . . . . . . . . . . . . . . 30
Lenovo Solution Center . . . . . . . . . 30
Quick test programs. . . . . . . . . . . 30
UEFI diagnostic program . . . . . . . . . 31
Bootable diagnostic programs. . . . . . . 31
Power system checkout . . . . . . . . . . . 32
Checking the ac power adapter . . . . . . 33
Checking operational charging . . . . . . 33
Checking the battery pack . . . . . . . . 33
Checking the coin-cell battery . . . . . . . 34
Chapter 4. Related service
information . . . . . . . . . . . . . . 35
Restoring the factory contents by using the
Recovery Disc Set . . . . . . . . . . . . . 35
Using the Windows recovery programs on the
Windows 8 and Windows 8.1 operating system. . 36
Refreshing your computer . . . . . . . . 36
Resetting your computer to the factory default
settings. . . . . . . . . . . . . . . . 36
Using the advanced startup options . . . . 37
Recovering your operating system if Windows
8 or Windows 8.1 fails to start . . . . . . . 37
Creating and using recovery media . . . . . 37
Recovery overview for the Windows 10 operating
system. . . . . . . . . . . . . . . . . . 39
Resetting your computer . . . . . . . . . 39
Using advanced startup options . . . . . . 39
Recovering your operating system if Windows
10 fails to start . . . . . . . . . . . . . 39
Creating and using a recovery USB drive . . 40
Passwords . . . . . . . . . . . . . . . . 40
Power-on password . . . . . . . . . . . 41
Hard-disk password. . . . . . . . . . . 41
Supervisor password . . . . . . . . . . 41
How to remove the power-on password . . . 41
How to remove the hard-disk password . . . 42
Power management . . . . . . . . . . . . 42
Screen blank mode (for the Windows 7
operating system only) . . . . . . . . . . 42
Sleep mode . . . . . . . . . . . . . . 42
Hibernation mode . . . . . . . . . . . 43
Symptom-to-FRU index . . . . . . . . . . . 43
Numeric error codes . . . . . . . . . . 44
Error messages . . . . . . . . . . . . 45
Beep errors . . . . . . . . . . . . . . 46
LCD-related symptoms . . . . . . . . . 46
Intermittent problems . . . . . . . . . . 47
Undetermined problems . . . . . . . . . 47
Chapter 5. Status indicators . . . . . 49
Chapter 6. Fn key combinations . . . 51
Chapter 7. Locations . . . . . . . . . 53
Locating computer controls, connectors, and
indicators. . . . . . . . . . . . . . . . . 53
ThinkPad L440 overview . . . . . . . . . 53
ThinkPad L540 overview . . . . . . . . . 55
Locating FRUs and CRUs . . . . . . . . . . 56
Major FRUs and CRUs. . . . . . . . . . 58
LCD FRUs and CRUs . . . . . . . . . . 60
Miscellaneous kits and other FRUs . . . . . 61
Looking up FRU information . . . . . . . 62
Chapter 8. FRU replacement
notices . . . . . . . . . . . . . . . . 63
Screw notices . . . . . . . . . . . . . . . 63
Retaining serial numbers. . . . . . . . . . . 64
Restoring the serial number of the system
unit . . . . . . . . . . . . . . . . . 64
Retaining the UUID . . . . . . . . . . . 65
Reading or writing the ECA information . . . 65
Chapter 9. Removing or replacing a
FRU . . . . . . . . . . . . . . . . . . 67
Before servicing the computer . . . . . . . . 68
1010 Battery pack . . . . . . . . . . . . . 68
1020 Bottom door . . . . . . . . . . . . . 69
1030 Optical drive . . . . . . . . . . . . . 70
1040 Hard disk drive or solid-state drive . . . . 72
1050 Memory module . . . . . . . . . . . . 73
1060 WWAN card or M.2 solid-state drive . . . . 74
1070 WLAN card . . . . . . . . . . . . . . 76
1080 Coin-cell battery. . . . . . . . . . . . 77
1090 Thermal-fan assembly . . . . . . . . . 78
1100 Keyboard . . . . . . . . . . . . . . 81
1110 Keyboard bezel assembly, fingerprint reader,
and power button card . . . . . . . . . . . 91
1120 Smart card reader, smart card door, and
dummy smart card . . . . . . . . . . . . . 102
1130 Microprocessor . . . . . . . . . . . . 104
1140 System board assembly. . . . . . . . . 105
1150 Audio board . . . . . . . . . . . . . 110
1160 Speaker assembly . . . . . . . . . . . 111
1170 Hinge bracket, dc-in cable assembly, RJ45
card, and base cover assembly . . . . . . . . 113
2010 LCD unit . . . . . . . . . . . . . . . 116
2020 LCD front bezel . . . . . . . . . . . . 120
2030 Camera/microphone combo card . . . . . 121
2040 Hinges, LCD panel, and LCD cable . . . . 122
2050 LED card and cable assembly . . . . . . 127
2060 Antenna assembly and LCD rear cover
assembly . . . . . . . . . . . . . . . . . 127
Appendix A. Notices. . . . . . . . . 131
Electronic emissions notices . . . . . . . . . 132
Trademarks . . . . . . . . . . . . . . . . 132
Appendix B. Abbreviation table . . . 133
ii Hardware



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