Dell C8618QT - Page 60

60 | Troubleshooting
Common
Symptoms
What You
Experience
Possible Solutions
Audio problem
No Audio
• Check PC setting if the playback is correctly selected.
• Checking other video cables.
• Ensure that the Speaker is enabled via OSD
Geometric
Distortion
Screen not centered
correctly
•Reset the display to factory settings.
•Auto Adjust via OSD.
•Adjust horizontal & vertical controls via OSD.
Horizontal/Vertical
Lines
Screen has one or
more lines
•Reset the display to factory settings.
•Perform Auto Adjust via OSD.
•Adjust Phase and Pixel Clock controls via OSD.
•Perform display 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 display to factory settings.
•Perform Auto Adjust via OSD.
•Adjust Phase and Pixel Clock controls via OSD.
•Perform display 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
Display
malfunctions on
& off
•Ensure that the video cable connecting the display to
the computer is connected properly and is secure.
•Resetthedisplaytofactorysettings.
•Perform display self-test feature check to determine if
the intermittent problem occurs in self-test mode.
Missing Color Picture missing
color
•Perform display self-test.
•Ensure that the video cable connecting the display 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.
Image retention
from a static
image left on the
display for a long
period of time
Faint shadow
from the static
image displayed
appears on the
screen
•Use the Power Management feature to turn o
the display at all times when not in use (for more
information, see Power Management Modes).
•Alternatively, use a dynamically changing screensaver.