User’s Guide

80 Troub l eshooting
Troubleshooting
WARNING: Before you begin any of the procedures in this section,
follow the Safety Instructions.
Self-test
Your monitor provides a self-test feature that allows you to check whether your
monitor is functioning properly. If your monitor and computer are properly
connected but the monitor screen remains dark, run the monitor self-test by
performing the following steps:
1. T
urn off both your computer and the monitor.
2. Unp
lug the video cable from the back of the computer.
3. Tu
rn on t he mo ni tor.
The floating dialog box should appear on-screen (ag
ainst a black background), if the
monitor cannot sense a video signal and is working correctly. While in self-test
mode, the power LED remains white. Also, depending upon the selected input, one
of the dialogs shown below will continuously scroll through the screen.
or
NOTE: The message may be slightly different according to the
connected input signal.
4. Th
is box also appears during normal system operation, if the video cable
becomes disconnected or damaged.
5. T
urn Off your monitor and reconnect the video cable; then turn On both your
computer and the monitor.