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 pre-installed system . . . . . .31

Passwords . . . . . . . . . . . . .32

Power management . . . . . . . . . .35

Checkout guide . . . . . . . . . . . .38

Testing the computer . . . . . . . . . .38

Detecting system information with PC-Doctor . . .41

Power system checkout . . . . . . . . .42

ThinkPad T43/T43p Series . . . . . . . . .45

Product overview . . . . . . . . . . . .47

Specifications . . . . . . . . . . . .47

Status indicators . . . . . . . . . . .50

FRU tests . . . . . . . . . . . . .53

Fn key combinations . . . . . . . . . .55

Symptom-to-FRU index . . . . . . . . . .58

Numeric error codes . . . . . . . . . .58

Error messages . . . . . . . . . . .63

Beep symptoms . . . . . . . . . . .64

No-beep symptoms . . . . . . . . . .64

LCD-related symptoms . . . . . . . . .65

Intermittent problems . . . . . . . . . .66

Undetermined problems . . . . . . . . .66

© Lenovo 2005. Portions © IBM Corp. 2005. iii