User's Manual

62 | Troubleshooting
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: http://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: 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 horizontal & vertical controls via OSD.
NOTE: When using DP/HDMI input, the positioning
adjustments are not available.
Horizontal/
Vertical Lines
Screen has one
or more lines
• Reset the monitor to Factory 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.
• Run the built-in diagnostics.
NOTE: When using DP/HDMI input, the Pixel Clock and Phase
adjustments are not available.
Synchronization
Problems
Screen is
scrambled or
appears torn
• Reset the monitor to Factory Settings.
• Perform Auto Adjust via OSD.
• Adjust Phase and Pixel Clock controls via OSD.
• Perform monitor self-test feature check to determine if the
scrambled screen appears in self-test mode.
• Check for bent or broken pins in the video cable connector.
• Restart the computer in the safe mode.
Safety Related
Issues
Visible signs of
smoke or sparks
• Do not perform any troubleshooting steps.
• Contact Dell immediately.