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Self-Test Feature Check
Check the following items yourself before calling for service.
Contact the service center for problems that you cannot solve by yourself.
Self-Test Feature Check | Not Optimum Mode | Display Adapter Driver
Maintenance and Cleaning | Symptoms & Recommended Actions
1. Self-Test Feature Check
Your monitor provides a self test feature that allows you to check whether your monitor is functioning
properly.
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.
The figure shown below ("Check Signal Cable") appears on a black background when the monitor is
in its normal working condition though it does not sense any video signal: While in the Self-Test
mode, the LED power indicator remains green and the figure moves around on the screen.
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
.
2. Not Optimum Mode
1. When the vertical frequency is between 76 and 85Hz or the resolution is UXGA (1600x1200), the
following message is displayed.
This notifies you that the screen can be viewed for a minute. Thereafter, you cannot view the screen
any longer and are required to switch to optimal mode.
2. When the vertical frequency is more than 86Hz, nothing appears on the screen but the following
message. In this case, reboot the system in safe mode and change the display settings.