70 | Troubleshooting
Troubleshooting
WARNING: Before you begin working on the following steps, 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. Turn o 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 and the analog cables from the back of computer.
3. Turn on the monitor.
The following dialog box appears on the screen (against a black background),
when the monitor cannot sense a video signal and is working correctly. While
in self-test mode, the power LED remains white. Depending upon the selected
input, one of the following dialog boxes will continuously scroll through the
screen.
or
or
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