HP 2175AE, 2186AF, 2182US, 2182AT, 2182AF, 2509 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, and then release both keys.

This hot key	Does this
Fn+F1	Decreases the display brightness.
Fn+F2	Increases the display brightness.
Fn+F5	Toggles among the built-in display, an external
	display, and simultaneous display on both.
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