Philips 170T4 User Manual page 50

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
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Press "MENU" key to select "ADJUST
POSITION" control at PC mode or press
"MENU" and "DOWN" hot keys at front
control together to automatically adjust
the position.
Check that the signal cable is properly
connected to the graphics board or PC.
Press "MENU" and "DOWN" hot keys at
front control together to automatically
adjust at PC mode.
Press "MENU" key to select "AUTO".
Press "MENU" and "DOWN" hot keys at
front control together to automatically
adjust at PC mode.
Press "MENU" key to select "AUTO".
Adjust the contrast and brightness in
OSD Main Controls. (The backlight of the
product 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
afterimage This usually disappears after
a few hours.