User Manual

Troubleshooting | 47
Geometric
Distortion
Screen not
centered
correctly
• Reset the monitor to factory settings.
• Auto Adjust via OSD.
• Adjust horizontal & vertical controls via OSD.
NOTE: When using HDMI input, the positioning adjustments
are not available.
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.
NOTE: When using HDMI input, the Pixel Clock and Phase
adjustments are not available.
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.
book.book Page 47 Wednesday, October 7, 2015 9:21 AM