Dell UZ2715H Guide de l'utilisateur télécharger pdf (Page 61)

Troubleshooting | 61

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 Button 3 and Button 6 on the front panel simultaneously for 2

seconds. A gray screen appears.

4. Carefully inspect the screen for abnormalities.

5. Press Button 6 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 and text

screens.

The test is complete when the text screen appears. To exit, press Button 6 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.

Common Problems

The following table contains general information about common monitor problems you

might encounter and the possible solutions:

Common

Symptoms

What You

Experience

Possible Solutions

No Video/Power

LED off

No picture • Ensure that the video cable connecting the monitor and the

computer is properly connected and secure.

• Verify that the power outlet is functioning properly using

any other electrical equipment.

• Ensure that the power button is depressed fully.

• Ensure that the correct input source is selected via the Input

Source menu.

No Video/Power

LED on

No picture or no

brightness

• Increase brightness & contrast controls via OSD.

• Perform monitor self-test feature check.

• Check for bent or broken pins in the video cable connector.

• Run the built-in diagnostics.

• Ensure that the correct input source is selected via the Input

Source menu.

Poor Focus Picture is fuzzy,

blurry, or

ghosting

• Perform Auto Adjust via OSD.

• Adjust the Phase and Pixel Clock controls via OSD.

• Eliminate video extension cables.

• Reset the monitor to Factory Settings.

• Change the video resolution to the correct aspect ratio.

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Dell UZ2715H Guide de l'utilisateur Page 61

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