User’s Manual 40
Troubleshooting
Self-Test Feature Check
A
Self-Test Feature Check
1.Turn off both your computer and the monitor.
2.Unplug the video cable from the back of the computer.
3.Turn on the monitor.
If the monitor is functioning properly, you will see a cyan box with a red border and black text inside as shown in the following illustration:
The three boxes inside the border are red, green and blue.
Failure of any of the boxes to appear indicates a problem with your monitor. This box also appears during normal 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 using the previous procedure,
check your video controller and computer system; your monitor is functioning properly.