Acer 1400 Series - Manual (Page 26)

Getting familiar with your computer 16
English
Hotkeys
Using the Fn key with another key creates a hot key, providing a quick
and convenient method for controlling various functions.
To use a hot key, first hold down the Fn key. Next, press the second key
in the combination. Finally, release both keys.
Your computer provides the following hot keys:
HotKey Function
Fn + F1 Decreases the display panel brightness.
Fn + F2 Increases the display panel brightness.
Fn + F5 Toggles the display setting between (1) the computer's
LCD panel, (2) an external display device connected to
the external display port, and (3) simultaneous display on
the computer's LCD panel and an external display device.
Fn + F9 Toggles Num Lk on and off. (See "Special keys").
Fn + F10 Toggles the keyboard's Scroll Lock on and off. (See
"Special keys").
Fn + Home Toggles the sound on and off. (Mute.)
Fn + Page Up Increases the sound volume. (Doesn't work for an
external keyboard.)
Fn + Page
Down Decreases the sound volume. (Doesn't work for an
external keyboard.)