Panasonic Touchbook CF-71 Series Reference Manual page 43

Dealing With Problems
Key Operation
If you change the video
output destination by
pressing Fn + F3
under the condition the
full DOS screen is open
(in [Start]-[Programs]-[MS-
DOS Prompt]), when you
close the MS-DOS screen
by typing "Exit", the
computer will return to the
output destination exist-
ing at the time you en-
tered the MS-DOS mode
Display
No display after power-
ing on
The power has not been
cut, but after a certain pe-
riod of time, there is no
display
The resolution of the dis-
play cannot be changed
An afterimage appears
(i.e., green, red, and blue
dots remain on the dis-
play) or there are dots
not displaying the cor-
rect colors
During simultaneous dis-
play, the screen of the
ex t e r n a l d i s p l ay be-
comes disordered
Press Fn + F3 again.
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. (
The Coffee Break Password may have been set. In such cases, perform the
following steps.
1 Press any key.
2 If the display remains dark, enter the Coffee Break Password and press Enter .
3 If the display continues to remain dark, press Enter again.
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.
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 functioning properly), no defect is considered to exist.
Try changing the display by pressing
Fn + F3 .
)
page 13
Fn + F3 .
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