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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 . . . . . . . . .22
General descriptions . . . . . . . . . .25
Read this first . . . . . . . . . . . . .25
What to do first . . . . . . . . . . .25
Related service information . . . . . . . . .27
Service Web site . . . . . . . . . . .27
Restoring the pre-installed system . . . . . .27
Passwords . . . . . . . . . . . . .28
Power management . . . . . . . . . .32
Checkout guide . . . . . . . . . . . .35
Testing the computer . . . . . . . . . .35
Detecting system information with PC-Doctor . . .38
Power system checkout . . . . . . . . .39
ThinkPad T40/T40p, T41/T41p, T42/T42p Series 43
Product overview . . . . . . . . . . . .45
Specifications . . . . . . . . . . . .45
Status indicators . . . . . . . . . . .50
FRU tests . . . . . . . . . . . . .53
Fn key combinations . . . . . . . . . .54
Symptom-to-FRU index . . . . . . . . . .58
Numeric error codes . . . . . . . . . .58
Error messages . . . . . . . . . . .62
Beep symptoms . . . . . . . . . . .63
No-beep symptoms . . . . . . . . . .63
LCD-related symptoms . . . . . . . . .64
Intermittent problems . . . . . . . . . .65
Undetermined problems . . . . . . . . .65
FRU replacement notices . . . . . . . . .66
Screw notices . . . . . . . . . . . .66
Retaining serial numbers . . . . . . . . .67
Removing and replacing a FRU . . . . . . . .70
1010 Battery pack for 14.1-in. LCD models . . .71
1020 Battery pack for 15.0-in. LCD models . . .73
© Lenovo 2006. Portions © IBM Corp. 2006. iii
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