Troubleshooting

Imaging Problems

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 afterimage remains after the power has been turned off.

Press the Auto button.

Adjust the image position using the Horizontal Position and/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 afterimage 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 afterimage will disappear after a period of time.

file:///D/My%20documents/dfu/B2C/ENGLISH/170C4/safety/saf_troub.htm (2 of 3) [3/1/2004 5:57:45 PM]

Page 33
Image 33
Philips 170C4 user manual Imaging Problems