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IBM ThinkPad A20m A21m A22m A20p A21p A22p

Tags : IBMThinkPadA20mA21mA22mA20pA21pA22p2628263326292631 
IBM ThinkPad A20m A21m A22m A20p A21p A22p Hardware Maintenance Manual

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Description

IBM ThinkPad A20m A21m A22m A20p A21p A22p Hardware Maintenance Manual
Second Edition (October 2001) - 158 pages

This manual supports:
ThinkPad A20m, A21m, A22m (MT 2628 / 2633)
A20p, A21p, A22p (MT 2629)
ThinkPad Dock (MT 2631)

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 translations3
Safety information14
General safety14
Electrical safety . 15
Safety inspection guide . 16
Handling electrostatic discharge-sensitive devices 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 computer33
Detecting system information with PC-Doctor. 35
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
Symptom-to-FRU index 49
Numeric error codes 49
Error messages . 52
Beep symptoms . 53
No beep symptoms 53
LCD-related symptoms . 54
Intermittent problems55
Undetermined problems . 55
FRU replacement notices . 56
Screw notices 56
Retaining serial numbers. 57
Removing and replacing a FRU59
1010 Battery pack. 60
1020 DIMM 61
1030 Mini PCI adapter . 63
1040 Backup battery 66
1050 Hard-disk drive or RF ID adapter 67
1060 Ultrabay 2000 device 69
1070 Keyboard . 71
1080 Keyboard CRU insulator . 74
1090 Hinge cover and clear sheet icon 75
1100 Keyboard bezel and speaker76
1110 Microphone and speaker cable . 78
1120 Sub card80
1130 PC Card slot assembly . 82
1140 Fan assembly 83
1150 Diskette drive 85
1160 Upper shield. 87
1170 TV card 88
1180 CPU socket and CPU 89
1190 System board and RJ45/11 connector
assembly 91
Thermal rubbers location. 93
2010 LCD assembly 94
2020 Front bezel . 96
2030 Inverter card 99
2040 LCD panel. 101
3010 ThinkPad Dock PCI cover 105
3020 ThinkPad Dock top cover 107
Locations 112
Front view. 112
Rear view. 113
Bottom view 114
Parts list 115
A series model matrix . 115
Overall . 123
AC adapter 136
LCD FRUs 136
Keyboard. 140
Recovery CDs . 141
Miscellaneous parts145
Optional FRUs . 147
Common parts list 148
Notices 150
Trademarks 150



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