User's Manual

40  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
theOSDD.
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
displaycable 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
displaycable and the ports.
•Restart the computer in safe mode.
Intermittent
Problems
Monitor
malfunctions
on and off
•Make sure the displaycable 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 displaycable connecting
the monitor to the computer is connected
properly and is secure.
•Check for bent or broken pins on the
displaycable and the ports.