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Using the Keyboard
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Combinations and Functions with the Fn Key
Combinations/
Feature Function
Fn+ (ESC)
System Suspend
Puts the system into System Suspend mode, a power-
management state. To return the system to the active
state, press any key or press the power button on your
computer.
Fn+ (F2)
Display power source
status
Displays the power source status, as in the example
below:
Fn+ (F3)
Mute On/Off
Toggles the built-in speaker off and on.
Fn+ (F4)
Speaker volume
Adjusts the built-in speaker volume.
To increase volume, press Fn+F4, then or .
To decrease volume, press Fn+F4, then or .
Fn+ (F5)
Brightness control
Adjusts the brightness of the LCD.
To increase light intensity, press Fn+F5 and then
or .
To decrease light intensity, press Fn+F5 and then or .
Fn+ (F6)
Contrast control
Adjust the screen contrast (PCG-F420 only).
Fn+ / (F7)
Switch to the
external monitor/LCD
Toggles through the LCD, external display (connected to
the Monitor connector) and both LCD and external
display.
Fn+ only/
(F8)
Control TV out
Toggles between LCD-only and dual LCD/TV display
modes.
Using AC
power
Charging a
battery pack
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LCD
Only LCD
LCD and external display
Only external display
LCD
LCD and external display
Only LCD