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Troubleshooting
Dealing with Problems (Summary)
No display after powering on
The power has not been
turned off, but after a cer-
tain period of time, there is
no display
When the battery pack is
used, the screen is darker
than when the AC adaptor
is connected
An afterimage appears (e.g.,
green, red, and blue dots
remain on the display) or
there are dots not display-
ing the correct colors
The screen becomes disor-
dered
When there is no display to an external display,
• Check your cable connection to the external display.
• Confirm your display is powered on.
• Check the settings for your external display.
The display destination may be set to the external display.
Try changing the display destination by pressing Fn + F3 .
If you want to switch the display destination repeatedly by pressing Fn + F3 , make
sure that the display destination has switched completely each time before pressing
Fn + F3 again.
When displaying only through an external display, if the computer is shut down by using
the standby or hibernation function, there will be no display on the LCD unless the exter-
nal display is connected when operations are resumed. In this case, connect the external
display or press Fn + F3 .
Press Fn + F2 and adjust the brightness.
Has the computer been set to the power-saving mode?
To resume operation of your computer from the condition the power of the display is off
(for energy conservation purposes), press any key unrelated to the direct triggering of a
selection, like Ctrl .
To save power, your computer may have automatically entered the standby mode (power
indicator blinks green) or hibernation mode (power indicator turns off). In such cases,
press the power switch.
Press Fn + F2 and adjust the brightness. Note, however, that when the brightness is
increased, the battery running time will become shorter.
Brightness can be set to separate levels for when the AC adaptor is connected and when
it is disconnected.
If an image is displayed for a prolonged period of time, an afterimage may appear. This
is not a malfunction. The afterimage will disappear when a different screen is displayed.
High-precision and advanced technologies are necessary in the production of color liquid
crystal displays (color LCDs). Therefore, if 0.002% or less of the picture elements either
fail to light or remain constantly lit (that is, more than 99.998% of elements are function-
ing properly), no defect is considered to exist.
Changing the number of colors or resolution of the display may affect the screen. Restart
the computer.
When using Extended Desktop, use the same display colors for the external display as
those used by the LCD.
When using Extended Desktop, do not press Fn + F3 .
Restart your computer immediately after enabling or disabling Extended Desktop.
Display
When the previous item is
not the cause
Press F9 in the Setup Utility ( “Setup Utility”). This will restore the Setup
Utility’s settings to their default values (except the password settings).
Try removing all peripheral devices.
Check a disk error using the following procedure.
1
Display [Local Disk(C:) Properties].
Select [Local Disk(C:)] with the right button in [start] - [My Computer], and select
[Properties].
2
Select [Tools] - [Check Now].
3
Select [Start] after selecting required items in [Check disk options].
At startup, hold down F8 when [Panasonic] boot screen disappears*
1
, and release
your finger when the Windows Advanced Options Menu is displayed. Start the computer
in Safe Mode, and confirm the details of the error.
*
1
When [Password on boot] is set to [Enable], [Enter Password] appears after the [Panasonic] boot
screen disappears. Hold down F8 soon after inputting the password and pressing Enter .
Starting Up (continued)