Built-In Diagnostics - Dell P8624QT User Manual

If your display screen remains blank after you use the previous procedure, check your video
controller and computer, because your display is functioning properly.

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.
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
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.
60 | Troubleshooting
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for 5 seconds in lock Select Option. Touch the self-inspection icon
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