Panasonic CF-20 - Display Issues

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Troubleshooting
Troubleshooting (Basic)
n
Display
No display.
l
The external display is selected. Press
Fn
+
F3
or +
P
to
switch the display.

Then click the display mode.

Wait until the display has been switched completely before press-
ing
Fn
+
F3
or +
P
again.
l
When using an external display,

Check the cable connection.

Turn on the display.

Check the settings of external display.
l
The display is turned off by the power-saving function. The screen
returns to the original state when you operate keyboard, touch-
pad, or touchscreen. When operating the keyboard, press a key
that does not affect the computer operation, such as
Ctrl
.
l
The computer entered sleep or hibernation by the power-saving
function. To resume, press the power switch.
The screen is dark.
l
The screen is darker when the AC adaptor is not connected.
Press
Fn
+
F2
and adjust the brightness. As you increase the
brightness, battery consumption increases.

You can separately set the brightness for when the AC adaptor is
connected and when not connected.
l
Press
Fn
+
F8
to turn off the concealed mode.
l
Under factory default settings, the brightness of the display screen
will adjust automatically based on the ambient light detected by the
ambient light sensor. You can adjust the settings for this sensor.
The screen is disordered.
l
Changing the number of display colors and resolution may affect
the screen. Restart the computer.
l
Connecting/disconnecting an external display may affect the
screen. Restart the computer.
l
Resuming from sleep or hibernation may affect the screen of the
external display. Restart the computer.
During Simultaneous display,
one of the screens becomes
disordered.
l
When using the Extended Desktop, use the same display colors
for the external display as those used by the LCD. If you continue
to experience problems, try changing the display.
l
Simultaneous display cannot be used until Windows startup is
complete (during Setup Utility, etc.).
The external display does
not work normally.
l
If the external display does not support the power saving function,
it may not work normally when the computer enters the power
saving mode. Turn off the external display.