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IBM THINKPAD A20M User Manual Page 158
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Part
Number:
23P0896
(1P) P/N: 23P0896
1
2
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158
IBM Mobile Systems
1
ThinkPad Computer
1
Hardware Maintenance Manual
1
About this manual
3
Contents
5
Introduction
7
How to use error messages
8
Diskette compatibility matrix
8
Safety notices
10
Safety information
20
General safety
20
Electrical safety
21
Safety inspection guide
22
Handling electrostatic
23
Grounding requirements
24
Laser compliance statement
24
General descriptions
29
Read this first
30
Related service information
31
Service web site
31
Product recovery program
31
Passwords
33
Power-on password:
34
Hard-disk password:
34
Supervisor password:
34
Power management
36
Hibernation mode
37
Checkout guide
39
Testing the computer
39
PC-Doctor
41
Power system checkout
41
Checking the ac adapter
42
Checking operational charging
42
Checking the battery pack
43
Checking the backup battery
43
Black (-)
44
ThinkPad A20m/p, A21m/p and
45
Product overview
47
Specifications
47
Status indicators
50
FRU tests
52
Fn key combinations
54
Symptom-to-FRU index
55
Numeric error codes
55
Error messages
58
Beep symptoms
59
No beep symptoms
59
LCD-related symptoms
60
Intermittent problems
61
Undetermined problems
61
90 degrees more
62
(Cross-section)
62
180 degrees more
62
Retaining serial numbers
63
FRU replacement notices
64
1010 Battery pack
66
1020 DIMM
67
1030 Mini PCI adapter
69
For A20m/p, A21m/p series
70
For A22m/p series
71
1040 Backup battery
72
Step Screw (quantity)
73
1060 Ultrabay 2000 device
75
1070 Keyboard
77
1080 Keyboard CRU insulator
80
Step Screw (quantity) Torque
81
(4 kgfcm)
81
1120 Sub card
86
1130 PC Card slot assembly
88
1140 Fan assembly
89
1150 Diskette drive
91
1160 Upper shield
93
1170 TV card
94
1180 CPU socket and CPU
95
1190 System board and RJ45/11
97
For A20m/p and A21m/p series
98
Thermal rubbers location
99
2010 LCD assembly
100
2020 Front bezel
102
14.1-in. and 15.0-in. panels
103
(LG)” on page 138
104
2030 Inverter card
105
2040 LCD panel
107
(continued)
108
Removing and replacing a FRU
110
3010 ThinkPad Dock PCI cover
111
3020 ThinkPad Dock top cover
113
(Bottom view)
114
Locations
118
Front view
118
Rear view
119
Bottom view
120
Parts list
121
A series model matrix
121
*1: Memory 128 MB
122
AC adapter
142
LCD FRUs
142
14.1-in. XGA TFT
143
15.0-in. XGA TFT (LG)
144
15.0-in. XGA TFT (SAMSUNG)
144
15.0-in. SXGA+ TFT
145
15.0-in. UXGA TFT
145
Keyboard
146
Recovery CDs
147
For Windows 98 (A22p)
148
For Windows 2000 (A22m)
149
For Windows 2000 (A22p)
149
Miscellaneous parts
151
Optional FRUs
153
Common parts list
154
Power cords (docking station)
155
Trademarks
156
Part Number: 23P0896
158
(1P) P/N: 23P0896
158
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