Panasonic Toughbook CF-W5LCEZZBM Reference Manual page 98

Troubleshooting (Advanced)
Nothing is displayed on the screen
Check if the power-saving mode is active.
• If the power indicator is lit:
The display is turned off. Press a key with no independent effect, such as Ctrl or Shift.
Do not use a key that may make a selection (Enter, Space, Esc, Y, N, numeric keys, and so on).
• If the power indicator is blinking or is not lit:
The standby or hibernation is entered. Slide the power switch.
Disconnect the external display before checking a disk error (
ing software. If you run this software with the external display still connected, in some cases, nothing will be displayed on
the screen. If this occurs, wait until the process is complete and the screen display returns.
The display destination may be set to the external display.
Try changing the display destination 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.
The screen may become darker. Press Fn+F2 to make the screen brighter.
There is an afterimage
Display a different screen.
If the same screen is displayed for a long time, this may leave an afterimage.
The screen becomes disordered
The screen display may become distorted if the resolution or number of colors is changed, or if an external display is con-
nected or disconnected while the computer is operating. Restart the computer.
Switching between internal and external displays does not work
The display destination cannot be switched while a video such as an MPEG file and a DVD Video are playing. Stop playing
the video before switching the display destination.
A blue background appears on the screen with the MPEG image or DVD Video
Did you open the CD/DVD drive or remove the disk while it was operating?
Insert the removed disk, and close the disk cover.
page 91) or before using commercially available partition-
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