Dell U3415W User Guide - Page 61

Built-in Diagnostics, Button 1

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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 Button 1 and Button 4 on the front panel simultaneously for 2 seconds. A gray screen appears. 4 Carefully inspect the screen for abnormalities. 5 Press Button 4 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 4 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 | 61

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Troubleshooting
|
61
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
Button 1
and
Button 4
on the front panel simultaneously for 2
seconds. A gray screen appears.
4
Carefully inspect the screen for abnormalities.
5
Press
Button 4
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 4
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.