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 the 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 the 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 screens.
The test is complete when the white screen appears. To exit, press the 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.
Common Problems The following table contains general information about common monitor problems you might encounter and the possible solutions.
Common
Symptoms
What You
Experience
Possible Solutions
No Video/Power
LED off
No picture
lEnsure that the video cable connecting the monitor and the computer is properly connected and secure.
lVerify that the power outlet is functioning properly using any other electrical equipment.
lEnsure that the power button is depressed fully.
lEnsure that the correct input source is selected via the Input Source Select button.
No Video/Power
LED on
No picture
or no
brightness
lIncrease brightness & contrast controls via OSD.
lPerform monitor self-test feature check.
lCheck for bent or broken pins in the video cable connector.
lRun the built-in diagnostics.
lEnsure that the correct input source is selected via the Input Source Select button.
Poor Focus
Picture is
fuzzy,
blurry, or
ghosting
lPerform Auto Adjust via OSD.
lAdjust the Phase and Pixel Clock controls via OSD.
lEliminate video extension cables.
lReset the monitor to Factory Settings.
lChange the video resolution to the correct aspect ratio (16:10).
Shaky/Jittery
Video
Wavy
picture or
fine
movement
lPerform Auto Adjust via OSD.
lAdjust the Phase and Pixel Clock controls via OSD.
lReset the monitor to Factory Settings.
lCheck environmental factors.
lRelocate the monitor and test in another room.
Missing Pixels
LCD screen
has spots
lCycle power on-off.
lPixel that is permanently off is a natural defect that can occur in LCD technology.
lFor 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
lCycle power on-off.
lPixel that is permanently off is a natural defect that can occur in LCD technology.
lFor 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
lReset the monitor to Factory Settings.
lAuto Adjust via OSD.
lAdjust brightness & contrast controls via OSD.
Geometric
Distortion
Screen not
centered
correctly
lReset the monitor to Factory Settings.
lAuto Adjust via OSD.
lAdjust Horizontal Position& Vertical Position controls via OSD.
NOTE: When using DVI-D input, the positioning adjustments are not available.
Horizontal/Vertical
Lines
Screen has
one or more
lReset the monitor to Factory Settings.
lPerform Auto Adjust via OSD.