Panasonic Toughbook CF-27 Series Reference Manual page 39

Dealing With Problems
Display
No display after powering
on
The power has not been
turned off, but after a cer-
tain period of time, there
is no display
The resolution of the dis-
play cannot be changed
An afterimage appears
During simultaneous display,
the screen of the the external
display becomes disordered
Touchscreen
Unable to input by touch-
ing the display
Unable to be used serial port B
An external mouse does
not work
Disk Operations
Cannot read/write to a
floppy disk
Unable to write to a
floppy disk
How to format a floppy
disk is unclear
Unable to read/write to
the hard disk
When the previous item
is not the cause
At the time of purchase, the display setting is preset for an external display. If you
connect an external display, the screen is displayed on the external display.
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.
Try changing the display by pressing
When displaying only through an external display, if the computer is shut down by
using the suspend or hibernation function, there will be no display on the LCD
unless the external display is connected when operations are resumed. In this
case, connect the external display.
Has the computer been set to the power-saving mode?
To resume operation of your computer from ECO mode, press any key.
To save power, your computer may have automatically entered the suspend or
hibernation mode. (
Set [None] for [Wallpaper] in [Start] - [Settings] - [Control Panel] - [Display] - [Back-
ground], and then press [OK]. Then, once again try changing the resolution. After
the change, be sure to restart the computer.
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.
Try changing the display by pressing
Has the Setup Utility been used to set [Serial Port B] to [Touchscreen]?
( page 27)
Confirm that the setting for resource in [Start] - [Programs] - [Touchscreen] -
[Touchscreen Control] - [Hardware Control] and the setting for [Base I/O] in [Serial
Port B:] of the Setup Utility are appropriate.
When some mouse drivers are installed, the touchscreen may at times be unable to be
used. In such cases, be sure to reinstall the driver for the touchscreen. (
Try to uninstall the touchscreen driver. (
Try to uninstall the touchscreen driver. (
Has the floppy disk been correctly inserted?
Has the floppy disk been correctly formatted?
Has the Setup Utility been used to set [Floppy Operation] to [Enable]?
( page 27)
Your floppy disk content may be corrupted.
Is the floppy disk write-protected?
Select [Format] in [My Computer] - [3 1/2 Floppy (A:)] - [File]. After confirming the
disk volume and format type, start formatting.
Your drive or file may not have been properly set.
Check to see if the hard disk is full. If it is full, delete unnecessary files.
Your hard disk content may be corrupted. Contact Panasonic Technical Support.
Try testing another drive or media.
Fn + F3 .
page 12)
Fn + F3 .
page 23).
page 23).
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