Dell P2418D Users Guide - Page 52

Built-in diagnostics, Troubleshooting

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Built-in diagnostics Your monitor has a built-in diagnostic tool that helps you determine if any screen abnormality you experience 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. 1 2 3 4 5 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 on the front panel simultaneously for 5 seconds. A gray screen appears. 4. Carefully inspect the screen for abnormalities. 5. Press Button 1 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 1 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. 52 │ Troubleshooting

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Troubleshooting
Built-in diagnostics
Your monitor has a built-in diagnostic tool that helps you determine if any screen
abnormality you experience 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.
5
1
2
3
4
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
on the front panel simultaneously for 5 seconds. A
gray screen appears.
4.
Carefully inspect the screen for abnormalities.
5.
Press
Button 1
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 1
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.