Panasonic cf-51mcmddbm User Manual

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When the previous item is 
not the cause

z Press F9 in the Setup Utility (

⇒Reference Manual “Setup Utility”).  This will restore 

the Setup Utility’s settings to their default values (except the password settings).

z Try removing all peripheral devices.
z Check a disk error using the following procedure.

A Display [Local Disk (C:) Properties].

Right-click [Local Disk(C:)] in [start] - [My Computer], and select [Proper-
ties].

B Select [Tools] - [Check Now].
C Select [Start] after selecting required items in [Check disk options].

z At startup, hold down 

F8 when [Panasonic] boot screen disappears

, and release 

your finger when the Windows Advanced Option Menu is displayed.  Start the com-
puter in Safe Mode, and confirm the details of the error.

*1

When [Password on boot] is set to [Enable], [Enter Password] appears after the [Panasonic] 
boot screen disappears. Hold down 

F8

 soon after inputting the password and pressing 

Enter

.

„ Display

No display after powering on

z 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.

z The display destination may be set to the external display.

Try changing the display by pressing 

Fn + F3.

If you want to switch the display destination repeatedly by pressing 

Fn + F3, make 

sure that the display destination has switched completely each time before pressing 

Fn + F3 again.

z Press Fn+F2 and adjust the brightness. 

The power has not been 
turned off, but after a certain 
period of time, there is no 
display

z 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 trigger-
ing of a selection, like 

Ctrl.

z To save power, your computer may have automatically entered the standby mode 

(power indicator blinks green) or hibernation mode (power indicator turns off). In 
such cases, press the power switch.

When the battery pack is 
used, the screen is darker 
than when the AC adaptor is 
connected

z Press 

Fn + F2 and adjust the brightness.  Note, however, that when the brightness 

is increased, the battery running time will become shorter.
Brightness can be set to separate levels for when the AC adaptor is connected and 
when it is disconnected.

An afterimage appears 
(e.g., green, red, and blue 
dots remain on the display) 
or there are dots not dis-
playing the correct colors

z 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.

z 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 ele-
ments either fail to light or remain constantly lit (that is, more than 99.998% of ele-
ments are functioning properly), no defect is considered to exist.

The screen becomes disor-
dered

z The screen display may become distorted if the resolution or number of colors is 

changed, or if an external display is connected or disconnected while the computer 
is operating. Restart the computer.

The external display no 
longer displays properly

z When an external display not compatible with the power saving mode is used with 

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.

„ Starting Up