Problems With Display - Panasonic CF-W4 Series Reference Manual

Problems with Display

Screen is too dark or becomes darker
There are red, green, or blue dots on the screen, or display
defects (always-on pixels or always-off pixels)
Nothing is displayed on the screen
Press the Fn+F2 key. This makes the screen lighter.
If the screen becomes darker after disconnecting the AC adaptor:
The computer has different set brightness levels for when the AC adaptor is connected
and for when it is not connected. Based on the settings at the time of purchase, the
screen will become darker when the AC adaptor is removed. If you press the Fn+F2 key
to increase the brightness when the AC adaptor is not connected, this brightness is main-
tained, and determines the brightness next time the AC adaptor is disconnected.
(Making the display brighter shortens the battery operating time.)
This is not a malfunction.
High-precision and advanced technologies are necessary for 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), this is not considered a defect.
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 the Ctrl key
or the Shift key.
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 mode or hibernation mode is entered. Slide the power switch.
Disconnect the external display before checking a disk error (
using commercially available partitioning 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 the Fn+F3 key.
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