Contents
About this manual | . | iii |
Introduction | . | 1 |
Important service information | . | 1 |
Strategy for replacing FRUs | . | 1 |
How to use error messages | . | 2 |
Diskette compatibility matrix | . | 2 |
Safety notices: multilingual translations | . | 3 |
Safety information | . | 14 |
General safety | . | 14 |
Electrical safety | . | 15 |
Safety inspection guide | . | 16 |
Handling electrostatic |
| 17 |
Grounding requirements | . | 18 |
Laser compliance statement | . | 18 |
General descriptions | . | . | 23 |
Read this first | . | . | 23 |
What to do first | . | . | 23 |
Related service information | . | . | 25 |
Service web site | . | . | 25 |
Product recovery program | . | . | 25 |
Passwords . . . . . . . . . . . . . 27 | |||
Power management | . | . | 30 |
Checkout guide | . | . | 33 |
Testing the computer | . | . | 33 |
Detecting system information with | |||
Power system checkout | . | . | 35 |
ThinkPad A20m/p, A21m/p and A22m/p. . | . . | . 39 | |
Product overview | . . | . | 41 |
Specifications | . . | . | 41 |
Status indicators | . . | . | 44 |
FRU tests | . . | . | 46 |
Fn key combinations | . . | . | 48 |
. . | . | 49 | |
Numeric error codes | . . | . | 49 |
Error messages | . . | . | 52 |
Beep symptoms | . . | . | 53 |
No beep symptoms | . . | . | 53 |
. . | . | 54 | |
Intermittent problems | . . | . | 55 |
Undetermined problems | . . | . | 55 |
FRU replacement notices | . . | . | 56 |
Screw notices | . . | . | 56 |
Retaining serial numbers | . . | . | 57 |
Removing and replacing a FRU | . . | . | 59 |
1010 Battery pack | . . | . | 60 |
1020 DIMM | . . | . | 61 |
1030 Mini PCI adapter | . . | . | 63 |
© Copyright IBM Corp. 2001 | v |
