Текст страницы
Common problems
The following table contains general information about common monitor problems that you might encounter and the possible solutions:
Table 23. Common problems
Common Symptoms
Possible Solutions
No video/power LED off
Ensure that the video cable connecting the monitor and the computer is properly connected and secure.
Verify that the power outlet is functioning properly using any other electrical equipment.
Ensure that the power button is pressed.
Ensure that the correct input source is selected through the Input Source menu.
No video/power LED on
Increase brightness and contrast controls using the OSD.
Perform monitor self-test feature check.
Check for bent or broken pins in the video cable connector.
Run the onboard diagnostics.
Ensure that the correct input source is selected through the Input Source menu.
Poor focus
Eliminate video extension cables.
Reset the monitor to factory settings (Factory Reset).
Change the video resolution to the correct aspect ratio.
Shaky or jittery video
Reset the monitor to factory settings (Factory Reset).
Check environmental factors.
Relocate the monitor and test in another room.
Missing pixels
Cycle power On-Off.
A pixel that is permanently Off is a natural defect that can occur in LCD technology.
For more information about Dell Monitor Quality and Pixel Policy, see Dell Support site at:
www.dell.com/pixelguidelines.
Stuck-on pixels
Cycle power On-Off.
A pixel that is permanently off is a natural defect that can occur in LCD technology.
For more information about Dell Monitor Quality and Pixel Policy, see Dell Support site at:
www.dell.com/pixelguidelines.
Brightness problems
Reset the monitor to factory settings (Factory Reset).
Adjust brightness and contrast controls through OSD.
Geometric distortion
Reset the monitor to factory settings (Factory Reset).
Adjust horizontal and vertical controls through OSD.
Horizontal or vertical lines
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 onboard diagnostics.
Synchronization problems
Reset the monitor to factory settings (Factory Reset).
Perform a 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
Do not perform any troubleshooting steps.
Contact Dell immediately.
49
Troubleshooting