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Contents
About this manual . . . . . . . . . . .1
Introduction . . . . . . . . . . . . .3
Important service information . . . . . . . . .3
Strategy for replacing FRUs . . . . . . . .3
How to use error messages . . . . . . . .4
Diskette compatibility matrix . . . . . . . . .4
Safety notices: multilingual translations . . . . . .4
Safety information . . . . . . . . . . . .16
General safety . . . . . . . . . . . .16
Electrical safety . . . . . . . . . . .17
Safety inspection guide . . . . . . . . .19
Handling devices that are sensitive to electrostatic
discharge . . . . . . . . . . . .20
Grounding requirements . . . . . . . . .21
Laser compliance statement . . . . . . . . .21
General descriptions . . . . . . . . . .25
Read this first . . . . . . . . . . . . .25
What to do first . . . . . . . . . . .25
Related service information . . . . . . . . .28
Service Web site . . . . . . . . . . .28
Restoring the preloaded system . . . . . .28
Passwords . . . . . . . . . . . . .30
Power management . . . . . . . . . .33
Checkout guide . . . . . . . . . . . .35
Testing the computer . . . . . . . . . .35
Detecting system information with PC-Doctor . . .37
Power system checkout . . . . . . . . .38
ThinkPad G40, G41 . . . . . . . . . . .43
Product overview . . . . . . . . . . . .45
Specifications . . . . . . . . . . . .45
Status indicators . . . . . . . . . . .47
FRU tests . . . . . . . . . . . . .49
Fn key combinations . . . . . . . . . .51
Symptom-to-FRU index . . . . . . . . . .52
Numeric error codes . . . . . . . . . .52
Error messages . . . . . . . . . . .56
Beep symptoms . . . . . . . . . . .58
No-beep symptoms . . . . . . . . . .58
LCD-related symptoms . . . . . . . . .59
Intermittent problems . . . . . . . . . .60
Undetermined problems . . . . . . . . .60
FRU replacement notices . . . . . . . . .61
Screw notices . . . . . . . . . . . .61
Retaining serial numbers . . . . . . . . .62
Removing and replacing a FRU . . . . . . . .65
1010 Battery pack . . . . . . . . . . .66
1020 Hard disk drive . . . . . . . . . .67
© Lenovo 2005. Portions © IBM Corp. 2005. iii