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Contents
About this manual . . . . . . . . . . .1
Introduction . . . . . . . . . . . . .3
Important service information . . . . . . . . .3
Strategy for replacing FRUs . . . . . . . . .3
Strategy for replacing a hard disk drive . . . . .4
How to use error messages . . . . . . . .4
Strategy for replacing FRUs for CTO, CMV, and GAV 4
Product definition . . . . . . . . . . .4
FRU identification for CTO, CMV, and GAV products 5
Important information about replacing RoHS compliant
FRUs . . . . . . . . . . . . . . .7
Diskette compatibility matrix . . . . . . . . .8
Safety notices: multilingual translations . . . . . .8
Safety information . . . . . . . . . . . .20
General safety . . . . . . . . . . . .20
Electrical safety . . . . . . . . . . .21
Safety inspection guide . . . . . . . . .23
Handling devices that are sensitive to electrostatic
discharge . . . . . . . . . . . .24
Grounding requirements . . . . . . . . .25
Laser compliance statement . . . . . . . . .26
General descriptions . . . . . . . . . .29
Read this first . . . . . . . . . . . . .29
What to do first . . . . . . . . . . .29
Related service information . . . . . . . . .31
Service Web site . . . . . . . . . . .31
Restoring the preloaded system . . . . . .31
Recovering the hard disk to original contents . . .34
Passwords . . . . . . . . . . . . .37
Power management . . . . . . . . . .39
Checkout guide . . . . . . . . . . . .42
Testing the computer . . . . . . . . . .42
Detecting system information with PC-Doctor . . .45
Power system checkout . . . . . . . . .45
ThinkPad X41 . . . . . . . . . . . . .49
Product overview . . . . . . . . . . . .51
Specifications . . . . . . . . . . . .51
Status indicators for X41 . . . . . . . . .53
FRU tests . . . . . . . . . . . . .55
Fn key combinations . . . . . . . . . .57
Symptom-to-FRU index . . . . . . . . . .59
Numeric error codes . . . . . . . . . .59
Error messages . . . . . . . . . . .67
Beep symptoms . . . . . . . . . . .69
No-beep symptoms . . . . . . . . . .69
LCD-related symptoms . . . . . . . . .70
Intermittent problems . . . . . . . . . .71
© Lenovo 2005. Portions © IBM Corp. 2005. iii