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