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Troubleshooting (Advanced)
Screen is too dark or too bright
Press
Fn
+
F2
or push
(LCD Brightness Up) button (For CF-C1 Series) (becomes brighter).
Press
Fn
+
F1
or push
(LCD Brightness Down) button (For CF-C1 Series) (becomes darker).
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 in the default setting, the screen will become darker when the AC adaptor is removed. If you press
Fn
+
F2
to increase the brightness when the AC adaptor is not connected, this brightness is maintained, and determines
the brightness next time the AC adaptor is disconnected.
(Making the display brighter shortens the battery operating time.)
If you make the display brighter when the AC adaptor is not connected, the battery operation time will become shorter.
There are red, green, or blue dots on the screen, or display defects (always-on
pixels or always-off pixels)
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.
Problems with Display
