3
Key Combinations
Do not press the following key combinations repeatedly in (quick) succession. Also, do not press different key
combinations quickly one after another.
Do not press the following key combinations while using the touch pad (mouse) or other keys.
CAUTION
NOTE
Do not press the following key combinations until you log on to Windows and the hard disk drive indicator turns off.
The key combinations below may not work while some applications are running. Besides, the popup window may
not be displayed depending on the state of the application you are using (e.g., when [Command Prompt] screen
is set to “Full Screen”).
Key
Functions
LCD brightness
control ( down)
LCD brightness
control ( up)
Display change
Speaker on/off
switch
Function Descriptions
Pressing this key combination adjusts the brightness of LCD.
The brightness setting is stored in memory separately un-
der the condition the AC adaptor is connected and under
the condition the AC adaptor is not connected.
By pressing this key combination, you can select either
an external display, internal LCD or simultaneous.
(
page 37
)
Pressing this key combination turns on/off audio from the
internal speakers and headphone jack.
Popup Window
(Displayed after log-
ging on to Windows)
Fn
+
F1
Fn
+
F3
Fn
+
F4
Fn
+
F2
Do not press another key until the display destina-
tion has been completely switched.
CAUTION
Windows XP
When switching to a different user with the Fast User
Switching function, this key combination may not work.
In this case, log off all users, and try the operation
once more. If the problem persists, restart the com-
puter.
The combination does not work when the computer
is in the Dualview mode.
NOTE
Disabling the speakers will also disable the warn-
ing beep.
Speakers connected to the USB port cannot be
muted.
NOTE
OFF
(MUTE)
ON