Basic Operation 
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+F5  Toggles the external monitor on and off. 
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. 
2–6  Startup Guide