![background image](http://html.mh-extra.com/html/panasonic/cf-74-series/cf-74-series_reference-manual_264335003.webp)
3
Key Combinations
NOTE
Do not repeatedly press the keys in quick succession.
Do not use the key combinations together with touch pad (external mouse), touchscreen (only for model with touch-
screen) or other key operations.
Do not use the key combinations before you log on to Windows. Wait until the hard disk drive indicator
turns off.
On the Setup Utility screen, you can use the key combinations of
Fn
+
F1
,
Fn
+
F2
and
Fn
+
F3
. By using the key com-
binations of
Fn
+
F3
, the display is switched between the internal LCD and the external display.
The key combinations may not work with some applications.
The pop-up icon appears after logging on to Windows. It may not appear in some application conditions.
Key
Function
Pop-up icon
Fn
+
F1
Fn
+
F2
LCD brightness
(
Fn
+
F1
= down /
Fn
+
F2
= up)
Fn
+
F3
Display switching (
)
(When an external display is connected)
Internal LCD
Simultaneous display
External display
CAUTION
Do not press any keys until the display has finished switching.
Do not use this function:
• When an external display is not connected.
• When playing motion video such as DVD or MPEG.
• When using the Extended Desktop.
Fn
+
F4
Speaker on/off
NOTE
Beeps do not sound if you turn off the speaker sound.
OFF
(MUTE)
ON