Lenovo THINKPAD T41/T41P - Manual (Page 3)

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