Dell C8618QT User Manual

Also see for C8618QT: User guide Quick start guide

Dell C8618QT User Manual Manual pdf 59 page image

Troubleshooting | 59Common ProblemsThe following table contains general information about common display problems you mightencounter and the possible solutions:NOTE: Auto Adjust function is applicable to VGA input only.CommonSymptomsWhat YouExperiencePossible SolutionsNo Video/PowerLED offNo picture • Ensure that the video cable connecting the displayand the computer is properly connected and secure.• Verify that the power outlet is functioning properlyusing any other electrical equipment.• Ensure that the power button is depressed fully.• Ensure that the correct input source is selected in theInput Source menu.No Video/PowerLED onNo picture or nobrightness• Increase brightness & contrast controls via OSD.• Perform display self-test feature check.• Check for bent or broken pins in the video cableconnector.• Run the built-in diagnostics.• Ensure that the correct input source is selected in theInput Source menu.Poor Focus Picture is fuzzy,blurry, or ghosting• Perform Auto Adjust via OSD.• Adjust the Phase and Pixel Clock controls via OSD.• Eliminate video extension cables.• Reset the display to factory settings.• Change the video resolution to the correct aspect ratio.Shaky/Jittery Video Wavy picture or finemovement• Perform Auto Adjust via OSD.• Adjust the Phase and Pixel Clock controls via OSD.• Reset the display to factory settings.• Check environmental factors.• Relocate the display and test in another room.Missing Pixels LCD screen hasspots• Cycle power on-off.• Pixel that is permanently off is a natural defectthat can occur in LCD technology.• For more information on Dell Display Qualityand Pixel Policy, see Dell Support site at:http://www.dell.com/support/monitors.Stuck-on Pixels LCD screen hasbright spots• Cycle power On-Off.• Pixel that is permanently off is a natural defectthat can occur in LCD technology.• For more information on Dell Display Qualityand PixelPolicy, see Dell Support site at:http://www.dell.com/support/monitors.BrightnessProblemsPicture too dim ortoo bright• Reset the display to factory settings.• Auto Adjust via OSD.• Adjust brightness & contrast controls via OSD.