Dell U3014 Monitor - Manual (Page 63)

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Troubleshooting
Dell™ U3014 Flat Panel Monitor User's Guide
Self-Test
Built-in Diagnostics
Common Problems
Product Specific Problems
Universal Serial Bus Specific Problems
Dell Soundbar Problems
Troubleshooting the Card Reader
WARNING: Before you begin any of the procedures in this section, 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 Off 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 video cables from the back of 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.
or
or