User`s guide

50  Troubleshooting
Missing Pixels LCD screen has spots • Cycle power on-o.
• Pixel that is permanently o 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:
http://www.dell.com/support/
monitors.
Stuck-on Pixels LCD screen has bright
spots
• Cycle power on-o.
• Pixel that is permanently o 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:
http://www.dell.com/support/
monitors.
Brightness Problems Picture too dim or too
bright
• Reset the monitor to Factory
Settings.
• Auto Adjust via OSD.
• Adjust brightness & contrast
controls via OSD.
Geometric Distortion Screen not centered
correctly
• Reset the monitor to Factory
Settings.
• Auto Adjust via OSD.
• Adjust brightness & contrast
controls via OSD.
NOTE: When using ‘DVI-D’, the
positioning adjustments are not
available.
Horizontal/Vertical Screen has one or • Reset the monitor to Factory
Lines more lines
Settings.
• Perform Auto Adjust via OSD.
• Adjust Phase and Pixel Clock
controls via OSD.
• Perform monitor self-test
feature check and determine if
these lines are also in self-test
mode.
• Check for bent or broken pins
in the video cable connector.
NOTE: When using ‘DVI-D’,
the Pixel Clock and Phase
adjustments are not available.