Dell UltraSharp UP3221Q User Manual page 90

Missing Pixels
Stuck-on Pixels LCD screen
Brightness
Problems
Geometric
Distortion
Horizontal/
Vertical Lines
Synchronization
Problems
│
90 Troubleshooting
LCD screen • Cycle power On-Off.
has spots
• Pixel that is permanently Off is a natural
• For more information on Dell Monitor Quality
• Cycle power On-Off.
has bright
• Pixel that is permanently off is a natural
spots
• For more information on Dell Monitor Quality
Picture too • Reset the monitor to factory settings.
dim or too
• Adjust brightness & contrast controls via
bright
Screen not • Reset the monitor to factory settings.
centered
• Adjust horizontal & vertical controls via OSD.
correctly
Screen has • Reset the monitor to factory settings.
one or more
• Perform monitor self-test feature check and
lines
• Check for bent or broken pins in the video
• Run the built-in diagnostics.
Screen is • Reset the monitor to factory settings.
scrambled or
• Perform monitor self-test feature check to
appears torn
• Check for bent or broken pins in the video
• Restart the computer in the safe mode.
defect that can occur in LCD technology.
and Pixel Policy, see Dell Support site at:
http://www.dell.com/pixelguidelines.
defect that can occur in LCD technology.
and Pixel Policy, see Dell Support site at:
http://www.dell.com/pixelguidelines.
OSD.
determine if these lines are also in self-test
mode.
cable connector.
determine if the scrambled screen appears in
self-test mode.
cable connector.