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Function (Fn) key combinations - ThinkPad A21, A22
The following table shows the function of each combination of Fn with a function key.

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 + F4Turn standby mode on. To return to normal operation, press the Fn key.
FN + F5Reserved
FN + F6Reserved
FN + F7Switch between the LCD and an external monitor.
FN + F8Turn screen expansion on or off. (There is no symbol on the key.)
FN + F9Reserved
FN + F10Reserved
FN + F11Reserved
FN + F12Turn hibernation mode on.
FN + PgUpTurn the ThinkLight on or off.
FN + HomeThe LCD becomes brighter.
FN + EndThe LCD becomes less bright.
FN + Insert
(for i-Series 1800 only)
Audio volume becomes bigger.
FN + Delete
(for i-Series 1800 only)
Audio volume becomes smaller.
FN + Backspace
(for i-Series 1800 only)

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Document ID : PD011728
Legacy Document ID : MIGR-4PCVUP
Last Updated :
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