Dell P2720DCc User Manual page 67

Stuck-on Pixels
Brightness Problems ∞ Reset the monitor to Factory Settings (Factory Reset).
Geometric Distortion ∞ Reset the monitor to Factory Settings (Factory Reset).
Horizontal/Vertical
Lines
Synchronization
Problems
Safety Related Issues ∞ Do not perform any troubleshooting steps.
Intermittent
Problems
∞ Cycle power On-Off.
∞ Pixel that is permanently off is a natural defect that can
occur in LCD technology.
∞ For more information on Dell Monitor Quality and Pixel
Policy, see Dell Support site at:
www.dell.com/support/monitors.
∞ Adjust brightness & contrast controls via OSD.
∞ Adjust horizontal & vertical controls via OSD.
∞ Reset the monitor to Factory Settings (Factory Reset).
∞ 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.
∞ Reset the monitor to Factory Settings (Factory Reset).
∞ 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.
∞ Contact Dell immediately.
∞ Ensure that the video cable connecting the monitor to
the computer is connected properly and is secure.
∞ Reset the monitor to Factory Settings (Factory Reset).
∞ Perform monitor self-test feature check to determine if
the intermittent problem occurs in self-test mode.
Troubleshooting │ 67