Dell E2223HN Service-Handbuch - Seite 9
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Service Manual
Self-test
Your monitor provides a self-test feature that allows you to check if 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.
Disconnect all video cables from the monitor. This way, the computer does not have to be involved.
3.
Turn on the monitor.
If the monitor is working correctly, it detects that there is no signal and one of the following message appears. While in self-test mode, the
power LED remains white.
NOTE: This message also appears during normal operation, when the video cable is disconnected or
damaged.
4.
Turn off your monitor and reconnect the video cable; then turn on your computer and the monitor.
If your monitor remains dark after you reconnect the cables, check your video controller and computer.
6. Trouble Shooting Instructions
9