Panasonic TOUGHBOOK CF-28 - Manual (Page 22)

Dealing with Problems (Summary)
Display
No display after powering
on
• 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 ) + C^3 ).
f4V/fiTibV/ifctWifi This combination does not work when the computer is in the Dual-Dis-
play*‘ Mode.
• When displaying only through an external display, if the computer is shut down (includ­
ing the standby or hibernation function), there will be no display on the LCD unless the
external display is connected when the computer is powered on or operations are re­
sumed. In this case, connect the external display or press C Fn )-!-( F3 ) .
The power has not been
turned off, but after a cer­
tain period of time, there is
no display
• 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 C Ctrl ).
• To save power, your computer may have automatically entered either the standby or
hibernation mode. (C^ “Computing on the Road”) Rotate the power switch.
The cursor cannot be con­
trolled Restart the computer by using the keyboard (e.g.,[ ^"]).
An afterimage appears (e.g.,
green, red, and blue dots
remain on tbe display) or
there are dots not display­
ing the correct colors
• 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
cry^stal 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.
The external display no
longer displays properly
When an external display not compatible with the power saving mode is used with the
computer, the external display may no longer display properly when the computer enters the
condition the power of the display is off (for energy conser\'ation purposes). In such cases,
turn oft'the power to the external display.
The screen becomes disor­
dered • Changing the number of colors of the display may affect the screen. Restart the computer.
• When using Dual-Display*' Mode, use the same display colors for the external display as
those used by the LCD.
During simultaneous dis-
play*S the screen of the ex­
ternal display becomes dis­
ordered
• Try changing the display by pressing ( Fn ) + C F3 ).
t'WiNfiftwgiEfi)) This combination does not work when the computer is in the Dual-Dis­
play*' Mode.
• If you continue to experience problems, try changing the display in [Start] - [Settings] -
[Control Panel] - [Intel® Graphics Technology].
When the screensaver is set,
an error will occur during a
resume operation.
When the computer automatically enters the standby mode while the screensaver is running,
an error may occur during a resume operation. In such cases, turn off the screensaver or try
changing the pattern of the screensaver.
*' To display one screen using both the internal LCD and external display as an extended display:
Dual-Display ^ Extended Desktop in [Intel (R) 82830M Graphics Controller Properties]
i [Intel (R) 830M Graphics Controller Properties]
dSHB [Intel Corporation 830M Graphics Controller Hub Properties]
To display the same screen on both the internal LCD and external display:
Simultaneous display ^ Intel (R) Dual Display clone in [Intel (R) 82830M Graphics Controller Properties]
iijfflTtD [Intel (R) 830M Graphics Controller Properties]
[Intel Corporation 830M Graphics Controller Hub Properties]
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