Dell U2422H 23.8" 16:9 IPS Monitor - Manual (Page 91)

Troubleshooting
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91
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.
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.
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.