Lenovo 1141BUU, Hardware Maintenance Manual

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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) . . . . . . . . . . . . . . . .
17
Chapter 2. Important service
information . . . . . . . . . . . . . .
25
Strategy for replacing FRUs . . . . . . . . . 25
Strategy for replacing a hard disk drive . . . 26
Important notice for replacing a system
board . . . . . . . . . . . . . . . .
26
How to use error message . . . . . . . . 26
Strategy for replacing FRUs for CTO, CMV, and
GAV . . . . . . . . . . . . . . . . . . .
26
Product definition . . . . . . . . . . . . 26
FRU identification for CTO, CMV, and GAV
products . . . . . . . . . . . . . . .
27
Chapter 3. General checkout . . . . . 29
What to do first . . . . . . . . . . . . . . 29
Checkout guide . . . . . . . . . . . . . . 30
System supporting the Lenovo ThinkVantage
Toolbox program and the PC-Doctor for DOS
diagnostics program
. . . . . . . . . . 30
System supporting the Lenovo diagnostics
programs . . . . . . . . . . . . . . .
34
Power system checkout . . . . . . . . . . . 36
Checking the ac power adapter . . . . . . 36
Checking operational charging . . . . . . 37
Checking the battery pack . . . . . . . . 37
Checking the backup battery . . . . . . . 38
Chapter 4. Related service
information . . . . . . . . . . . . . .
39
Restoring the factory contents by using Recovery
Disc Set . . . . . . . . . . . . . . . . .
39
Passwords . . . . . . . . . . . . . . . . 40
Power-on password . . . . . . . . . . . 40
Hard-disk password. . . . . . . . . . . 40
Supervisor password . . . . . . . . . . 41
How to remove the power-on password . . . 41
How to remove the hard-disk password . . . 41
Power management . . . . . . . . . . . . 42
Screen blank mode . . . . . . . . . . . 42
Sleep mode . . . . . . . . . . . . . . 42
Hibernation mode . . . . . . . . . . . 42
Symptom-to-FRU index . . . . . . . . . . . 43
Numeric error codes . . . . . . . . . . 44
Error messages . . . . . . . . . . . . 44
No-beep symptoms . . . . . . . . . . . 44
LCD-related symptoms . . . . . . . . . 45
Intermittent problems . . . . . . . . . . 45
Undetermined problems . . . . . . . . . 45
Chapter 5. Status indicators . . . . . 47
Chapter 6. Special keys . . . . . . . . 49
Chapter 7. FRU replacement
notices . . . . . . . . . . . . . . . .
51
Screw notices . . . . . . . . . . . . . . . 51
Retaining serial numbers. . . . . . . . . . . 52
Restoring the serial number of the system
unit . . . . . . . . . . . . . . . . .
52
Retaining the UUID . . . . . . . . . . . 53
Reading or writing the ECA information . . . 53
Chapter 8. Removing and replacing a
FRU . . . . . . . . . . . . . . . . . .
55
Before servicing ThinkPad Edge E420 models . . 55
1010 Battery pack . . . . . . . . . . . . . 56
1020 ExpressCard blank bezel . . . . . . . . 57
1030 Bottom slot cover . . . . . . . . . . . 58
1040 Optical drive or travel cover . . . . . . . 59
1050 Memory modules . . . . . . . . . . . 60
1060 Hard disk drive assembly . . . . . . . . 60
1070 PCI Express Mini Card for wireless LAN . . 62
1080 PCI Express Mini Card for wireless WAN . . 63
1080 mSATA solid state drive . . . . . . . . . 64
1090 Backup battery . . . . . . . . . . . . 66
1110 Keyboard . . . . . . . . . . . . . . 66
1120 Top case assembly. . . . . . . . . . . 68
1130 Bluetooth daughter card . . . . . . . . 71
1140 Express sub card . . . . . . . . . . . 72
1150 Speaker assembly . . . . . . . . . . . 73
1160 System board assembly and fan assembly . 74
1170 CPU . . . . . . . . . . . . . . . . 80
1180 DC-in sub card and base cover assembly . . 81
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