Fn Key Combinations - IBM ThinkPad T21 Hardware Maintenance Manual

Product overview

Fn key combinations

The following table shows the function of each combination
of Fn with a function key.
Key
combination
Fn+F1
Fn+F2
Fn+F3
Fn+F4
Fn+F5
Fn+F6
Fn+F7
Fn+F8
Fn+F9
Fn+F10
Fn+F11
Fn+F12
Fn+PgUp
Fn+Home
Fn+End
48
ThinkPad T20, T21, T22, T23 (MT 2647/2648)
Description
Reserved.
Reserved.
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.
Turn standby mode on. To return to normal
operation, press the Fn key independently,
without pressing a function key.
Reserved.
Reserved.
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
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.
Reserved.
Reserved.
Reserved.
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.
Turn the ThinkLight on or off.
The LCD becomes brighter.
The LCD becomes less bright.