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38 Troubleshooting
Common
Symptoms
What You
Experience
Possible Solutions
Brightness
Problems
Picture too dim
or too bright
•Reset the monitor to factory settings.
•Auto Adjust using OSD.
•Adjust brightness and contrast using theOSD.
Geometric
Distortion
Screen not
centered
correctly
•Reset the monitor to factory settings.
•Auto Adjust using OSD.
•Adjust horizontal and vertical positions using
OSD.
Horizontal/
Vertical Lines
Screen has one
or more lines
•Reset the monitor to factory settings.
•Perform Auto Adjust using OSD.
•Adjust Phase and Pixel Clock using OSD.
•Perform monitor self-test and determine if the
lines appear in the self-test mode.
•Check for bent or broken pins on the
displaycable and the ports.
•Run the built-in diagnostics.
Synchronization
Problems
Screen is
scrambled or
appears torn
•Reset the monitor to factory settings.
•Perform Auto Adjust using OSD.
•Adjust Phase and Pixel Clock using OSD.
•Perform monitor self-test check to determine if
the problem appears in self-test mode.
•Check for bent or broken pins on the
displaycable and the ports.
•Restart the computer in safe mode.
Intermittent
Problems
Monitor
malfunctions on
and off
Make sure the displaycable connecting the
monitor to the computer is connected properly
and is secure.
Reset the monitor to factory settings.
Perform monitor self-test to determine if the
intermittent problem occurs in self-test mode.
Missing Color
Picture missing
color
•Perform monitor self-test.
•Make sure the displaycable connecting the
monitor to the computer is connected properly
and is secure.
•Check for bent or broken pins on the
displaycable and the ports.