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Contents
Introduction .............1
Important service information .........1
Strategy for replacing FRUs ........1
How to use error messages ........2
Diskette compatibility matrix .........2
Safety notices: multilingual translations ......3
Safety information............12
General safety............12
Electrical safety ...........13
Safety inspection guide .........14
Handling electrostatic discharge-sensitive devices 15
Grounding requirements .........16
Laser compliance statement.........16
General descriptions ..........19
Read this first .............19
What to do first: ...........19
Related service information .........21
Service Web site ...........21
Using Recovery CD ..........21
Passwords .............22
Power management ..........24
Checkout guide ............27
Testing the computer ..........27
Detecting system information with PC-Doctor. . . 29
Power system checkout .........29
ThinkPad A21e ............33
Product overview ............35
Specifications ............35
Status indicators ...........36
FRU Tests .............38
Fn key combinations ..........40
Symptom-to-FRU index ..........41
Numeric error codes ..........41
Error messages ...........44
Beep symptoms ...........45
No beep symptoms ..........45
LCD-related symptoms .........46
Intermittent problems ..........46
Undetermined problems .........47
FRU replacement notices .........47
Screw notices ............47
Retaining serial numbers.........48
Removing and replacing a FRU........50
1010 Battery pack...........51
1020 DIMM ............52
1030 Mini PCI adapter .........53
1040 Backup battery ..........55
1050 Hard-disk drive ..........56
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