Philips 150S4FB Electronic User's Manual page 33

Troubleshooting
Display position is incorrect
Image vibrates on the screen
Vertical flicker appears
Horizontal flicker appears
The screen is too bright or too dark
An after-image appears
An after-image remains after the power
has been turned off.
Green, red, blue, dark and white dots
remain
For further assistance, refer to the
distributor.
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Press the Auto button.
Adjust the image position using the Horizontal
Position &/or Vertical Position in OSD Main
Controls.
Check that the signal cable is properly
connected to the graphics board or PC.
Press the Auto button.
Eliminate the vertical bars using the Clock
Adjustment of VIDEO NOISE in OSD Main
Controls.
Press the Auto button.
Eliminate the horizontal bars using the Phase
Adjustment of VIDEO NOISE in OSD Main
Controls.
Adjust the contrast and brightness in OSD
Main Controls. (The backlight of the LCD
monitor has a fixed life span. When the screen
becomes dark or begins to flicker, please
contact your dealer.
If an image remains on the screen for an
extended period of time, it may be imprinted in
the screen and leave an after-image. This
usually disappears after a few hours
This is characteristic of liquid crystal and is not
caused by a malfunction or deterioration of the
liquid crystal. The after-image will disappear
after a given amount of time
The remaining dots are normal characteristic
of the liquid crystal used in today's
technology.
list and contact your local Philips