IBM THINKPAD T22 User Manual Page 54
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- Table of contents
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Fn key combinations
The following table shows the function of each combination
of Fn with a function key.
Key
combination
Description
Fn+F1 Reserved.
Fn+F2 Reserved.
Fn+F3 Turn off the LCD display, leaving the screen
blank. To turn the LCD display on again, press
any key or the TrackPoint stick.
Note: To use Fn+F3 for screen blank in
Windows 2000 and Windows XP, you must have
IBM PM device driver installed on your
computer.
Fn+F4 Turn standby mode on. To return to normal
operation, press the Fn key independently,
without pressing a function key.
Fn+F5 Reserved.
Fn+F6 Reserved.
Fn+F7 Switch between the LCD and an external
monitor (CRT). If an external monitor is
attached, computer output is displayed in the
following three patterns by turns:
v CRT display
v LCD+CRT display
v LCD
Fn+F8 Turn screen expansion on or off. (There is no
symbol on the key.)
Note: This function is not supported in Windows
2000 and Windows XP.
Fn+F9 Reserved.
Fn+F10 Reserved.
Fn+F11 Reserved.
Fn+F12 Turn hibernation mode on. To return to normal
operation, press the power button for less than
four seconds.
Note: To use Fn+F12 for hibernation in
Windows 2000 and Windows XP, you must have
IBM PM device driver installed on your
computer.
Fn+PgUp Turn the ThinkLight on or off.
Fn+Home The LCD becomes brighter.
Fn+End The LCD becomes less bright.
Product overview
48 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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