Users Guide

Troubleshooting │ 43
Horizontal/Vertical
Lines
Screen has one or
more lines
• Reset the monitor to Factory Reset.
• 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.
NOTE: When using ‘HDMI’, the Pixel
Clock and Phase adjustments are not
available.
Synchronization
Problems
Screen is scrambled
or appears torn
• Reset the monitor to Factory Reset.
• 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.
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 Reset.
• 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 feature
check.
• 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.