Dell P2421 - Page 63

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Shaky/Jittery
Video
Wavy picture or
fine movement
• Perform Auto Adjust via OSD.
• Adjust the Phase and Pixel Clock
controls via OSD.
• Reset the monitor to factory settings.
• Check environmental factors.
• Relocate the monitor and test in
another room.
Missing Pixels LCD screen has
spots
•Cycle power On-Off.
• 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:
www.dell.com/
support/monitors.
Stuck-on Pixels LCD screen has
bright spots
•Cycle power On-Off.
• 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:
www.dell.com/
support/monitors.
Brightness
Problems
Picture too dim or
too bright
• Reset the monitor to factory settings.
• Perform Auto Adjust via OSD.
• Adjust brightness & contrast controls
via OSD.
Geometric
Distortion
Screen not
centered correctly
• Reset the monitor to factory settings.
• Perform Auto Adjust via OSD.
• Adjust horizontal & vertical controls
via OSD.
• When using DVI-D/HDMI/DisplayPort
input, the positioning adjustments are
not available.