To use the function hot keys, This hot key Does this

Basic Operation

Operating Your Notebook

To use the function hot keys

The combination of the Fn key plus another key creates a hot key—a shortcut key sequence—for various system controls. To use a hot key, press and hold Fn, press the appropriate second key, then release both keys.

This hot key	Does this
Fn+F1	Decreases the display brightness.

Fn+F2	Increases the display brightness.

Fn+F8	Toggles the built-in keypad on and off. Does not affect
	an external keyboard. If Num Lock is on, then the
	numeric functions are active; otherwise, cursor control
	is active (as marked on an external keyboard).

Fn+F12	Initiates Hibernation.

Fn+NumLock	Toggles Scroll Lock on and off.

Fn+Page Up	Increases the audio volume and cancels the mute
	setting.

Fn+Page Down	Decreases the audio volume.

Fn+Backspace	Mutes/unmutes the audio output.

Reference Guide 19

2547EA, 2552AI, 2541AH, 2543AH, 2542EA specifications

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