Operation Manual
Troubleshooting | 39
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. To ensure proper Self-Test 
operation, remove all digital cables from the back of computer.
3 Turn 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. 
  NO
TE: This box also appears during normal system operation, if the video cable 
becomes disconnected or damaged.
4 Turn Off your monitor and reconnect the video cable; then turn On both your 
computer and the monitor.
If your monitor screen remains blank after you use the previous procedure, check your 
video controller and computer, because your monitor is functioning properly.










