User Manual

50 | Troubleshooting
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. Tur
n off both your computer and the monitor.
2. Unplug the
video cable from the back of the computer. To ensure proper
Self-Test operation, remove all digital cables from the back of computer.
3. Tur
n on the monitor.
NOTE: A dialog box should appear on-screen (against a black
background), if the monitor cannot sense a video signal and is working
correctly. While in self-test mode, the power LED blinks white.
NOTE: This box also appears during normal system operation, if the video
cable is disconnected or damaged.
4. Turn Of
f your monitor and reconnect the video cable; then turn On both
your computer and the monitor.
If your monitor screen remains blank after you u
se the previous procedure, check
your video controller and computer, because your monitor is functioning
properly.