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Function (Fn) key combinations - ThinkPad A30/p, A31/p

Note: The Fn key works independently from the operating system.

Key combinationDescription
Fn + F1Reserved.
Fn + F2Reserved.
Fn + F3Turn off the LCD display, leaving the screen blank. To turn the LCD display on again, press any key or the TrackPoint stick.
Fn + F4

Turn standby mode on. To return to normal operation, press the Fn key independently, without pressing a function key.


  • This mode is called suspend mode in Microsoft Windows 95 and Microsoft Windows NT.
  • In Microsoft Windows 2000, this combination of buttons functions as a sleep button. The settings can be changed so that pressing it puts the computer into hibernation mode or even shuts the computer down.
Fn + F5Reserved.
Fn + F6Reserved.
Fn + F7

Switch between the LCD and an external monitor (CRT). If a CRT is attached, computer output is displayed in the following three patterns by turns:

  • CRT
  • LCD + CRT
  • 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.

Fn + F9Reserved.
Fn + F10Reserved.
Fn + F11Reserved.
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, PM device driver must have installed on the computer.

Fn + PgUpTurn the ThinkLight on or off.
Fn + HomeThe LCD becomes brighter.
Fn + EndThe LCD becomes less bright.
Fn + Spacebar

Magnify desktop and maximize application windows.

Note: To use Fn + Space (Fullscreen Magnifier), On Screen Display must be installed.


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Document ID : PD010051
Legacy Document ID : MIGR-39653
Last Updated :
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