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.
Summary of Contents for UZ2215H
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Page 66: ...66 Troubleshooting ...