IBM THINKPAD T22 User Manual Page 50
- Page / 182
- Table of contents
- BOOKMARKS
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Status indicators
The system status indicators show the status of the
computer, as follows:
1 2 3 4 5
6 7 8
Indicator Meaning
1 Drive in use Green: Data is being read from or written
to the hard-disk drive, the diskette
drive, or the drive in the Ultrabay
2000. When this indicator is on, do
not put the computer into standby
mode or turn off the computer.
Note: Do not move the system while the
Green drive in use light is on. Sudden physical
shock could cause drive errors.
2 Num lock Green: The numeric keypad on the
keyboard is enabled. To enable or
disable the keypad, press and hold
the Fn key while pressing the
NumLk key.
3 Caps lock Green: Caps Lock mode is enabled. To
enable or disable Caps Lock
mode, press Fn + Caps Lock key.
(continued)
Product overview
44 ThinkPad T20, T21, T22, T23 (MT 2647/2648)
- 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 19
- General safety 19
- Electrical safety 20
- Safety inspection guide 21
- Grounding requirements 23
- Laser compliance statement 24
- CAUTION: 25
- General descriptions 27
- Read this first 28
- Related service information 29
- Service web site 29
- Product Recovery program 30
- Using the recovery CD 31
- Passwords 32
- Supervisor password: 33
- Power management 34
- Standby mode 35
- Hibernation mode 36
- Checkout guide 38
- Testing the computer 38
- PC-Doctor 40
- Power system checkout 41
- Checking operational charging 42
- Checking the battery pack 42
- Checking the backup battery 43
- 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
- FRU replacement notices 62
- Screw notices 62
- Retaining serial numbers 63
- 1010 Battery pack 66
- 1020 Backup battery 67
- 1030 Hard-disk drive 69
- 1040 DIMM 71
- 1050 Mini PCI adapter 72
- 1060 Ethernet daughter card 76
- 1070 Ultrabay 2000 device 79
- 1080 Keyboard 80
- 1090 Keyboard CRU insulator 88
- 1100 Hinge cover 89
- For T20 and T21 series 90
- For T22 series 91
- (4 kgfcm) 92
- 1110 Keyboard bezel 94
- 1120 Fan assembly 100
- Removing and replacing a FRU 101
- For T23 series 102
- Step Screw (quantity) Torque 103
- (2.5 kgfcm) 103
- 1130 CPU 104
- 1140 PC Card slot assembly 106
- 1150 Speaker 109
- 1160 Hard-disk bay 111
- 1170 Ultrabay 2000 slot 113
- For T21 and T22 series 114
- 1180 System board 119
- 1190 Secure chip 123
- 1200 Microphone cable 124
- 2010 LCD assembly 125
- For MT2647-xLx, xNx 127
- 2020 Front bezel 128
- 2030 Inverter card 129
- 2040 LCD panel 130
- (continued) 131
- 2050 Antenna assembly 134
- 2060 Sub card 137
- 3010 ThinkPad Dock PCI cover 139
- 3020 ThinkPad Dock top cover 141
- (Bottom view) 142
- Locations 146
- Front view 146
- Rear view 147
- Bottom view 148
- Parts list 149
- For T20, T21 and T22 153
- AC adapters 162
- LCD FRUs 163
- 14.1-in. XGA TFT 164
- 14.1-in. SXGA+ TFT 165
- Keyboard 166
- Recovery CDs 167
- For Windows 2000 (T22 series) 168
- For Windows 98 (T23 series) 169
- For Windows 2000 (T23 series) 170
- For Windows XP (T23 series) 172
- Miscellaneous parts 173
- Optional FRUs 176
- Common parts list 178
- Power cords (docking station) 179
- Trademarks 180
- Part Number: 62P9631 182
- (1P) P/N: 62P9631 182
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