Panasonic Toughbook CF-37 Series Operating Instructions Manual page 20

Dealing With Problems
Display
No display after powering
on
The power has not been
turned off, but after a certain
period of time, there is no dis-
play
The resolution of the display
cannot be changed
An afterimage appears(i.e.,
green, red, and blue dots re-
main on the display) or
there are dots not display-
ing the correct colors
The motion of the mouse
cursor is not smooth
The cursor cannot be con-
trolled
During simultaneous dis-
play, the screen of the ex-
ternal display becomes dis-
ordered
The external display no
longer displays properly
20
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 Fn + F3 .
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 dis-
play.
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. ( "Computing On the Road")
Set [None] for [Wallpaper] in [Start] - [Settings] - [Control Panel] - [Display] - [Background],
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.
High-precision and advanced technologies are necessary in the production of color liquid
crystal displays (color LCDs). Therefore, if 99.998% or more of the picture elements are
functioning properly, no defect is considered to exist.
Select [Start] - [Settings] - [Control Panel] - [Mouse] - [Motion] and try to change the speed
or acceleration.
Restart the computer by using the keyboard (e.g.,
Try changing the display by pressing Fn + F3 .
When an external display not compatible with the power saving mode is used with the com-
puter, the external display may no longer display properly when the computer enters the ECO
mode. In such cases, turn off the power to the external display.
(Summary)
).