Dell P2723QE, Руководство по обслуживанию

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Service Manual
13
6. Trouble Shooting 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 Off both your computer and the monitor.
2. Unplug the video cable from the computer.
3. Turn On the monitor.
The floating 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 remains white. Also, depending upon the selected input, one of the
dialogs shown below will continuously scroll through the screen.
4. This message also appears during normal system operation, if the video cable becomes disconnected or damaged.
5. 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.