Dell u2410 - Manual (Page 40)

4. Carefully inspect the screen for abnormalities.
5. Press the fourth button 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, and white colored screens.
The test is complete when the white screen appears. To exit, press the fourth button 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.
OSD Warning Messages
For OSD-related issues, see OSD Warning Messages .
Common Problems
The following table contains general information about common monitor problems you might encounter.
Common Symptoms What You Experience Possible Solutions
No Video/Power LED off No picture l Ensure that the video cable connecting the monitor and the computer is properly connected
and secure.
l Verify that the power outlet is functioning properly using any other electrical equipment.
l Ensure that the power button is depressed fully.
No Video/Power LED on No picture or no brightness l Increase brightness & contrast controls via OSD.
l Perform monitor self-test feature check.
l Check for bent or broken pins in the video cable connector.
l Touch button 5 located above the power button, ensure that the correct input source is
selected via the
Input Source Select menu.
l Run the built-in diagnostics.
Poor Focus Picture is fuzzy, blurry, or ghosting l Perform Auto Adjust via OSD.
l Adjust the Phase and Pixel Clock controls via OSD.
l Eliminate video extension cables.
l Reset the monitor to Factory Settings.
l Change the video resolution to the correct aspect ratio (16:10).
Shaky/Jittery Video Wavy picture or fine movement l Perform Auto Adjust via OSD.
l Adjust the Phase and Pixel Clock controls via OSD.
l Reset the monitor to Factory Settings.
l Check environmental factors.
l Relocate the monitor and test in another room.
Missing Pixels LCD screen has spots l Cycle power on-off.
l Pixel that is permanently off is a natural defect that can occur in LCD technology
For more information on Dell Monitor Quality and Pixel Policy, see Dell Support site at:
support.dell.com.
Stuck-on Pixels LCD screen has bright spots l Cycle power on-off.
l Pixel that is permanently off is a natural defect that can occur in LCD technology
For more information on Dell Monitor Quality and Pixel Policy, see Dell Support site at:
support.dell.com.
Brightness Problems Picture too dim or too bright l Reset the monitor to Factory Settings.
l Auto Adjust via OSD.
l Adjust brightness & contrast controls via OSD.
Geometric Distortion Screen not centered correctly l Reset the monitor to Factory Settings.
l Auto Adjust via OSD.