User's Manual

Operating Your Computer 2-5
Key Description
Increases the sound volume.
Decreases the LCD brightness.
Increases the LCD brightness.
Switches the system sound output off (mute) or on.
Switches LCD backlight off or on.
Switches the display output to one of the following
when an external monitor is connected through the
VGA port.
LCD LCD & VGA VGA
Serves as the sleep button that you can define with
Windows’ Power Options. (See the “Power
Management” in Chapter 3.)
NOTE:
 If you have changed your system from the default ACPI mode to APM mode,
the hot keys Fn+F3, Fn+F4, and Fn+F10 will not be supported.
 The operating system might ignore the hot keys when busy with tasks. Do not
keep on pressing the hot keys under such circumstance. Wait for a while
before you try again.