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Lenovo ThinkPad X240s 20AJ and 20AK

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Lenovo ThinkPad X240s 20AJ and 20AK Hardware Maintenance Manual

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Description

Lenovo ThinkPad X240s 20AJ and 20AK Hardware Maintenance Manual
Second Edition (November 2013) - 110 pages

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

ThinkPad X240s Machine types (MT) 20AJ and 20AK.

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 built-in battery packs and
operational charging . . . . . . . . . . 27
Checking the backup battery . . . . . . . 28
Chapter 4. Related service
information . . . . . . . . . . . . . . 29
Restoring the factory contents by using the
product Recovery Disc Set . . . . . . . . . . 29
Using the Windows recovery solutions (for
Windows 8 and Windows 8.1 only) . . . . . . . 30
Passwords . . . . . . . . . . . . . . . . 33
Power-on password . . . . . . . . . . . 33
Hard disk password . . . . . . . . . . . 33
Supervisor password . . . . . . . . . . 34
Power management . . . . . . . . . . . . 34
Screen blank mode (for the Windows 7
operating system only) . . . . . . . . . . 34
Sleep mode . . . . . . . . . . . . . . 35
Hibernation mode . . . . . . . . . . . 35
Symptom-to-FRU index . . . . . . . . . . . 35
Numeric error codes . . . . . . . . . . 36
Error messages . . . . . . . . . . . . 37
Beep symptoms . . . . . . . . . . . . 37
No-beep symptoms . . . . . . . . . . . 37
LCD-related symptoms . . . . . . . . . 38
Intermittent problems . . . . . . . . . . 38
Undetermined problems . . . . . . . . . 39
Chapter 5. Status indicators . . . . . 41
Chapter 6. Function keys and
combinations . . . . . . . . . . . . . 43
Chapter 7. Locations . . . . . . . . . 45
Locating computer controls, connectors, and
indicators. . . . . . . . . . . . . . . . . 45
Front view. . . . . . . . . . . . . . . 45
Left-side view . . . . . . . . . . . . . 46
Bottom view . . . . . . . . . . . . . . 46
Locating FRUs and CRUs . . . . . . . . . . 46
Major FRUs . . . . . . . . . . . . . . 48
LCD FRUs . . . . . . . . . . . . . . 50
Miscellaneous kits and other FRUs . . . . . 52
Looking up FRU information . . . . . . . 52
Chapter 8. FRU replacement
notices . . . . . . . . . . . . . . . . 53
Screw notices . . . . . . . . . . . . . . . 53
Retaining serial numbers. . . . . . . . . . . 54
Restoring the serial number of the system
unit . . . . . . . . . . . . . . . . . 54
Retaining the UUID . . . . . . . . . . . 55
Reading or writing the ECA information . . . 55
Chapter 9. Removing or replacing a
FRU . . . . . . . . . . . . . . . . . . 57
General guidelines . . . . . . . . . . . . . 57
Before servicing the computer . . . . . . . . 58
Disabling the built-in batteries . . . . . . . 58
Removing the SIM card tray. . . . . . . . 58
1010 Base cover assembly . . . . . . . . . . 59
1020 Front battery . . . . . . . . . . . . . 60
1030 Rear battery . . . . . . . . . . . . . 61
1040 Memory module . . . . . . . . . . . . 63
1050 Hard disk drive or solid-state drive and drive
cable . . . . . . . . . . . . . . . . . . 63
1060 Wireless LAN card . . . . . . . . . . . 66
1070 Wireless WAN card or M.2 solid-state drive . 66
1080 Speaker assembly . . . . . . . . . . . 68
1090 Backup battery . . . . . . . . . . . . 69
1100 Thermal fan assembly . . . . . . . . . 70
1110 System board . . . . . . . . . . . . . 72
1120 Power button board and power button
assembly . . . . . . . . . . . . . . . . . 74
1130 LCD assembly . . . . . . . . . . . . 75
1140 Keyboard plate, dc-in cable assembly,
keyboard, and keyboard bezel assembly . . . . 77
For models with non-touch panel . . . . . . . 80
2010 LCD bezel . . . . . . . . . . . . 80
2020 LCD hinges, LCD panel, and LCD
cable. . . . . . . . . . . . . . . . . 81
2030 Camera, microphone combo card and
camera cable . . . . . . . . . . . . . 84
2040 Wireless LAN/WAN antenna assembly
and LCD rear-cover assembly . . . . . . . 86
For models with touch panel . . . . . . . . . 88
2010 LCD I-shaped bezel. . . . . . . . . 88
2020 LCD hinges and LCD front metal bezel . 89
2030 LCD panel, LCD cable, and LCD front
strap bezel . . . . . . . . . . . . . . 92
2040 Camera, microphone combo card and
camera cable . . . . . . . . . . . . . 94
2050 Wireless LAN/WAN antenna assembly
and LCD rear-cover assembly . . . . . . . 96
Appendix A. Notices. . . . . . . . . . 99
Trademarks . . . . . . . . . . . . . . . . 100
Appendix B. Abbreviation table . . . 101



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