Dell UP2720Q Users Guide - Page 79

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Page 79 highlights

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. • Adjust brightness & contrast controls via OSD. Geometric Distortion Screen not centered correctly • Reset the monitor to factory settings. • Adjust horizontal & vertical controls via OSD. Horizontal/ Vertical Lines Screen has one or more lines • Reset the monitor to factory settings. • 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. Synchronization Screen is • Reset the monitor to factory settings. Problems scrambled or • Perform monitor self-test feature check to appears torn 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 Visible signs • Do not perform any troubleshooting steps. Issues of smoke or • Contact Dell immediately. sparks Troubleshooting │ 79

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Troubleshooting± ±
│
± ± 79
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:
.
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:
.
Brightness
Problems
Picture too
dim or too
bright
•
Reset the monitor to factory settings.
•
Adjust brightness & contrast controls via
OSD.
Geometric
Distortion
Screen not
centered
correctly
•
Reset the monitor to factory settings.
•
Adjust horizontal & vertical controls via OSD.
Horizontal/
Vertical Lines
Screen has
one or more
lines
•
Reset the monitor to factory settings.
•
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.
Synchronization
Problems
Screen is
scrambled or
appears torn
•
Reset the monitor to factory settings.
•
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.