Dell C8618QT User Manual page 60

Common
Symptoms
Audio problem
Geometric
Distortion
Horizontal/Vertical
Lines
Synchronization
Problems
Safety Related
Issues
Intermittent
Problems
Missing Color
Wrong Color
Image retention
from a static
image left on the
display for a long
period of time
60 | Troubleshooting
What You Possible Solutions
Experience
No Audio • Check PC setting if the playback is correctly selected.
• Checking other video cables.
• Ensure that the Speaker is enabled via OSD
Screen not centered • Reset the display to factory settings.
correctly • Auto Adjust via OSD.
• Adjust horizontal & vertical controls via OSD.
Screen has one or • Reset the display to factory settings.
more lines • Perform Auto Adjust via OSD.
• Adjust Phase and Pixel Clock controls via OSD.
• Perform display self-test feature check and determine if
• Check for bent or broken pins in the video cable connector.
• Run the built-in diagnostics.
Screen is scrambled • Reset the display to factory settings.
or appears torn • Perform Auto Adjust via OSD.
• Adjust Phase and Pixel Clock controls via OSD.
• Perform display self-test feature check to determine if the
• Check for bent or broken pins in the video cable connector.
• Restart the computer in safe mode.
Visible signs of • Do not perform any troubleshooting steps.
smoke or sparks • Contact Dell immediately.
Display • Ensure that the video cable connecting the display to
malfunctions on
& off • Reset the display to factory settings.
• Perform display self-test feature check to determine if
Picture missing • Perform display self-test.
color • Ensure that the video cable connecting the display to
• Check for bent or broken pins in the video cable
Picture color not • Change the settings of the Preset Modes in the Color
good
• Adjust R/G/B value under Custom. Color in Color
• Change the Input Color Format to PC RGB or YPbPr
• Run the built-in diagnostics.
Faint shadow • Use the Power Management feature to turn off
from the static
image displayed
appears on the • Alternatively, use a dynamically changing screensaver.
screen
these lines are also in self-test mode.
scrambled screen appears in self-test mode.
the computer is connected properly and is secure.
the intermittent problem occurs in self-test mode.
the computer is connected properly and is secure.
connector.
menu OSD depending on the application.
menu OSD.
in the Color menu OSD.
the display at all times when not in use (for more
information, see Power Management Modes).