29
Troubleshooting
Display
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.
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 com-
puter.
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.
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 nor-
mally when the computer enters the power saving mode. Turn off the external display.
Touch Pad / Touchscreen (only for model with touchscreen)
The cursor does not work.
l
When using the external mouse, connect it correctly.
l
Restart the computer using the keyboard.
l
If the computer does not respond to keyboard commands, read “No response”
(
è
page 30).
Cannot input using the touch
pad.
l
Set [Touch Pad] to [Enabled] in the [Main] menu of the Setup Utility.
l
The drivers for some mice may disable the touch pad. Check your mouse’s operating
instructions.
<Only for model with touch
screen>
Cannot input using the
touchscreen.
l
Set [Touchscreen Mode] to [Auto] or [Tablet] in the [Main] menu of the Setup Utility.
l
Set [Touchscreen] to [Enabled] in the [Advanced] menu of the Setup Utility.
Cannot point the correct posi-
tion using the included stylus.
l
Perform the touchscreen calibration (
è
Reference Manual
“Screen Input Opera-
tion”).
<Only for model with touch-
screen>
“Charm” does not always ap-
pear.
l
Flick toward the center of the screen from the right edge.
l
Use the included pen.
On-screen Document
The document of PDF for-
mat is not displayed.
l
Install Adobe Reader.
A
Log on to Windows as an administrator.
B
Click
(Start) and input “c:\util\reader\en\Pinstall.bat” in [Search programs and
fi les] then press
Enter
.
C
Update Adobe Reader to its latest version.
If your computer is connected to the internet, start up Adobe Reader and click [Help]
- [Check for Updates...].
CF-53mk3(DFQW5800ZAT)_OI_US.indb 29
2013/06/12 12:56:08
