Users Guide

52 | Troubleshooting
Common
Symptoms
What You
Experience
Possible Solutions
Geometric
Distortion
Screen not
centered
correctly
•Reset the monitor to factory settings.
•Auto Adjust through OSD.
•Adjust horizontal & vertical controls via OSD.
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.
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 safe mode.
Safety Related
Issues
Visible signs of
smoke or sparks
•Do not perform any troubleshooting steps.
•Contact Dell immediately.
Intermittent
Problems
Monitor
malfunctions on
& off
•Ensure that the video cable connecting the monitor
to the computer is connected properly and is
secure.
•Resetthemonitortofactorysettings.
•Perform monitor self-test feature check to
determine if the intermittent problem occurs in self-
test mode.
Missing Color Picture missing
color
•Perform monitor self-test.
•Ensure that the video cable connecting the monitor
to the computer is connected properly and is
secure.
•Check for bent or broken pins in the video cable
connector.
Wrong Color Picture color not
good
•Change the settings of the Preset Modes in the
Color menu OSD depending on the application.
•Adjust R/G/B value under Custom. Color in Color
menu OSD.
•Change the Input Color Format to PC RGB or
YPbPr in the Color menu OSD.
•Run the built-in diagnostics.