Dell P5524QT 55" UHD 4K Touchscreen Commercial Monitor - Manual (Page 67)

Troubleshooting | 67
Built-in diagnostics
Your display has a built-in diagnostic tool that helps you determine if the screen
abnormality you are experiencing is an inherent problem with your display, or with your
computer and video card.
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To run the built-in diagnostics:
1. Make sure that the screen is clean (no dust particles on the surface of the
screen).
2. Touch and hold for 5 seconds in lock Select Option. Touch the self-inspection
icon A gray screen appears.
3. Carefully inspect the screen for abnormalities.
4. Touch the front panel. The color of the screen changes to red.
5. Inspect the display for any abnormalities.
6. Repeat steps 4 and 5 to inspect the display in green, blue, black, white, and text
screens.
The test is complete when the text screen appears. To exit, touch panel again.
If you do not detect any screen abnormalities upon using the built-in diagnostic tool,
the display is functioning properly. Check the video card and computer.