Panasonic CF-28 Series Reference Manual page 64

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 cursor cannot be con-
trolled
An afterimage appears
(e.g., green, red, and blue
dots remain on the dis-
play) or there are dots not
displaying the correct col-
ors
The external display no
longer displays properly
The screen becomes dis-
ordered
During simultaneous dis-
play, the screen of the ex-
ternal display becomes
disordered
The screen does not fill up
the entire display (i.e., the
screen is shown in the
center of the display)
Sound
The sound is not heard
The computer produces a
strange sound
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
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 Shift
To save power, your computer may have automatically entered the standby or
hibernation mode. Rotate the power switch.
Restart the computer by using the keyboard (e.g.,
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.
When an external display is used that is incompatible with the power saving modes of
the computer, the display may not function correctly when the computer enters the
power saving mode. In such cases, turn off the power to the external display.
Changing the number of colors and refresh rate of the display may affect the screen.
Restart the computer.
Try changing the display by pressing
If you continue to experience problems, try changing the display in the following
menu.
Windows 2000 : [Start] - [Settings] - [Control Panel] - [Intel
Windows XP : [Start] - [Control Panel] - [Other Control Panel Options] - [Intel
Extreme Graphics].
If the resolution is set to less than the resolution of the internal LCD and the screen is
set to simultaneous display, the screen will not fill up the entire display. Also, if the
screen is set to Extended Desktop, the screen may not fill up the entire display.
Try changing the mute by pressing Fn + F4 or Fn + F6 .
Has the Setup Utility been used to set [Speaker] to [Disable]?(
If the computer enters the power management mode such as the standby mode/
Hibernation mode or the LCD is closed while the computer is making a sound, the
computer may produce a strange sound, but this does not indicate a problem.
(Advanced)
Fn + F3 .
.
Fn + F3 .
).
®
Extreme Graphics].
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