Lenovo 1141BTU, 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
Diagnostics using PC-Doctor for DOS. . . . 30
Lenovo ThinkVantage Toolbox . . . . . . . 32
FRU tests . . . . . . . . . . . . . . . 33
Power system checkout . . . . . . . . . . . 34
Checking the ac power adapter . . . . . . 34
Checking operational charging . . . . . . 35
Checking the battery pack . . . . . . . . 35
Checking the backup battery . . . . . . . 36
Chapter 4. Related service
information . . . . . . . . . . . . . .
37
Restoring the factory contents by using Recovery
Disc Set . . . . . . . . . . . . . . . . .
37
Passwords . . . . . . . . . . . . . . . . 38
Power-on password . . . . . . . . . . . 38
Hard-disk password. . . . . . . . . . . 38
Supervisor password . . . . . . . . . . 39
How to remove the power-on password . . . 39
How to remove the hard-disk password . . . 39
Power management . . . . . . . . . . . . 40
Screen blank mode . . . . . . . . . . . 40
Sleep (standby) mode . . . . . . . . . . 40
Hibernation mode . . . . . . . . . . . 40
Symptom-to-FRU index . . . . . . . . . . . 41
Numeric error codes . . . . . . . . . . 42
Error messages . . . . . . . . . . . . 42
No-beep symptoms . . . . . . . . . . . 42
LCD-related symptoms . . . . . . . . . 43
Intermittent problems . . . . . . . . . . 43
Undetermined problems . . . . . . . . . 43
Chapter 5. Status indicators . . . . . 45
Chapter 6. Special keys. . . . . . . . 47
Chapter 7. FRU replacement
notices . . . . . . . . . . . . . . . .
49
Screw notices . . . . . . . . . . . . . . . 49
Retaining serial numbers. . . . . . . . . . . 50
Restoring the serial number of the system
unit . . . . . . . . . . . . . . . . .
50
Retaining the UUID . . . . . . . . . . . 51
Reading or writing the ECA information . . . 51
Chapter 8. Removing and replacing a
FRU . . . . . . . . . . . . . . . . . .
53
Before servicing ThinkPad Edge E420 models . . 53
1010 Battery pack . . . . . . . . . . . . . 54
1020 ExpressCard blank bezel . . . . . . . . 55
1030 Bottom slot cover . . . . . . . . . . . 56
1040 Optical drive or travel cover . . . . . . . 57
1050 Memory modules . . . . . . . . . . . 58
1060 Hard disk drive assembly . . . . . . . . 59
1070 PCI Express Mini Card for wireless LAN . . 61
1080 PCI Express Mini Card for wireless WAN . . 62
1080 mSATA solid state drive . . . . . . . . . 63
1090 Backup battery . . . . . . . . . . . . 64
1110 Keyboard . . . . . . . . . . . . . . 65
1120 Top case assembly. . . . . . . . . . . 66
1130 Bluetooth daughter card . . . . . . . . 69
1140 Express sub card . . . . . . . . . . . 70
1150 Speaker assembly . . . . . . . . . . . 71
1160 System board assembly and fan assembly . 73
1170 CPU . . . . . . . . . . . . . . . . 78
1180 DC-in sub card and base cover assembly . . 79
1190 LCD unit . . . . . . . . . . . . . . . 83
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