Built-in diagnostics, Built-in, Diagnostics – Dell P2723QE 27" 4K UHD USB Type-C Hub Monitor User Manual
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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.
To run the built-in diagnostics:
1.
Ensure that the screen is clean (no dust particles on the surface of the screen).
2.
When there is no video input, press and hold in Up or Down or Left or Right
direction will be able to access the Main Menu.
3.
Use up or down direction to select the Self-Diagnostic function in the
Main
Menu > Others
and confirm with center key.
A gray test pattern appears at the beginning of the diagnostic program.
4.
Carefully inspect the screen for abnormalities.
5.
Select Up or Down or Left or Right key to change the test patterns.
6.
Repeat steps 4 and 5 to inspect red, green, blue, black, white and text screens.
7.
When in White color test screen, check for white color uniformity and if there
white color appears greenish/reddish, etc.
8.
Press Up or Down or Left or Right key to end the diagnostic program.