Dell E2218HN User Manual - Page 38

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Built-in Diagnostics

Your monitor has a built-in diagnostic tool that helps you determine if the screen

abnormality you are experiencing is an inherent problem with your monitor, or with your

computer and video card.

NOTE: You can run the built-in diagnostics only when the video cable is unplugged

and the monitor is in self-test mode.

To run the built-in diagnostics:

1. Ensure that the screen is clean (no dust particles on the surface of the screen).

2. Unplug the video cable(s) from the back of the computer or monitor. The

monitor then goes into the self-test mode.

3. Press and hold the Button 1 on the front panel simultaneously for 2 seconds. A

gray screen appears.

4. Carefully inspect the screen for abnormalities.

5. Press the Button 1 on the front panel again. The color of the screen changes

to red.

6. Inspect the display for any abnormalities.

7. Repeat steps 5 and 6 to inspect the display in green, blue, black, white screens.

The test is complete when the Text screen appears. To exit, press the Button 1 again.

If you do not detect any screen abnormalities upon using the built-in diagnostic tool,

the monitor is functioning properly. Check the video card and computer.

Troubleshooting