Name: IBM ThinkPad A21m
Brand: IBM
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Note: Following illustration shows the PCI cover removal

of ThinkPad Dock (FRU no. 08N1546.) Do the

same procedure for the PCI cover removal of

ThinkPad Dock with extension plate (FRU part no.

08N1537.)

(Bottom view)

Removing and replacing a FRU

106 ThinkPad A20m/p, A21m/p, A22m/p

Table of Contents5
Introduction7
Important Service Information7
Strategy for Replacing Frus7
How to Use Error Messages8
Diskette Compatibility Matrix8
Safety Notices: Multilingual Translations9
Safety Information20
General Safety20
Electrical Safety21
Safety Inspection Guide22
Handling Electrostatic Discharge-Sensitive Devices23
Grounding Requirements24
Laser Compliance Statement24
General Descriptions29
Read this First29
What to Do First29
Related Service Information31
Service Web Site31
Product Recovery Program31
Passwords33
Power Management36
Checkout Guide39
Testing the Computer39
Detecting System Information with PC-Doctor41
Power System Checkout41
Thinkpad A20M/P, A21M/P and A22M/P45
Product Overview47
Specifications47
Status Indicators50
FRU Tests52
Fn Key Combinations54
Symptom-To-FRU Index55
Numeric Error Codes55
Error Messages58
Beep Symptoms59
No Beep Symptoms59
LCD-Related Symptoms60
Intermittent Problems61
Undetermined Problems61
FRU Replacement Notices62
Screw Notices62
Retaining Serial Numbers63
Restoring the Serial Number of the System Unit63
Retaining the UUID63
Removing and Replacing a FRU65
1010 Battery Pack66
1020 DIMM67
1030 Mini PCI Adapter69
For A20M/P, A21M/P Series70
For A22M/P Series71
1040 Backup Battery72
1050 Hard-Disk Drive or RF ID Adapter73
1060 Ultrabay 2000 Device75
1070 Keyboard77
1080 Keyboard CRU Insulator80
1090 Hinge Cover and Clear Sheet Icon81
1100 Keyboard Bezel and Speaker82
1110 Microphone and Speaker Cable84
For A20M/P and A21M/P Series (Microphone and Speaker Cable)84
For A22M/P Series (Speaker Cable)85
1120 Sub Card86
1130 PC Card Slot Assembly88
1140 Fan Assembly89
1150 Diskette Drive91
1160 Upper Shield93
1170 TV Card94
1180 CPU Socket and CPU95
1190 System Board and RJ45/11 Connector Assembly97
For A20M/P and A21M/P Series98
For A22M/P Series98
Thermal Rubbers Location99
2010 LCD Assembly100
2020 Front Bezel102
12.1-In. Panel102
14.1-In. and 15.0-In. Panels103
2030 Inverter Card105
12.1-In. Panel105
14.1-In. and 15.0-In. Panels106
2040 LCD Panel107
12.1-In. Panel107
14.1-In. and 15.0-In. Panels109
3010 Thinkpad Dock PCI Cover111
3020 Thinkpad Dock Top Cover113
Locations118
Front View118
Rear View119
Bottom View120
Parts List121
A Series Model Matrix121
Overall129
AC Adapter142
LCD Frus142
12.1-In. SVGA TFT142
14.1-In. XGA TFT143
In. XGA TFT (LG)144
In. XGA TFT (SAMSUNG)144
15.0-In. SXGA+ TFT145
15.0-In. UXGA TFT145
Keyboard146
Recovery Cds147
For Windows 98 (A22M)147
For Windows 98 (A22P)148
For Windows 2000 (A22M)149
For Windows 2000 (A22P)149
For Windows 2000/Windows NT (A22M)149
For Windows 2000/Windows NT (A22P)150
Miscellaneous Parts151
Optional Frus153
Common Parts List154
Tools154
Power Cords (System)154
Power Cords (Docking Station)155
Notices156
Trademarks156

IBM ThinkPad A21m User Manual

Table of Contents

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IBM ThinkPad A21m Specifications

Related product manuals

Brand	IBM
Model	ThinkPad A21m
Category	Laptop
Language	English