Dell 2009WFP User's Guide - Page 25

Missing Pixels LCD screen has spots l Cycle power on-off. l Pixel that is permanently off is a natural defect that can occur in LCD technology. Stuck-on Pixels LCD screen has bright spots l Cycle power on-off. l Pixel that is permanently off is a natural defect that can occur in LCD technology. Brightness Problems Picture too dim or too bright l Reset the monitor to Factory Settings. l Auto Adjust via OSD. l Adjust brightness & contrast controls via OSD. Geometric Distortion Screen not centered correctly l Reset the monitor to Factory Settings. l Auto Adjust via OSD. l Adjust brightness & contrast controls via OSD. NOTE: When using '2: DVI-D', the positioning adjustments are not available. Horizontal/Vertical Lines Screen has one or more lines l Reset the monitor to Factory Settings. l Perform Auto Adjust via OSD. l Adjust Phase and Pixel Clock controls via OSD. l Perform monitor self-test feature check and determine if these lines are also in self-test mode. l Check for bent or broken pins in the video cable connector. Synchronization Problems Screen is scrambled or appears torn NOTE: When using '2: DVI-D', the Pixel Clock and Phase adjustments are not available. l Reset the monitor to Factory Settings. l Perform Auto Adjust via OSD. l Adjust Phase and Pixel Clock controls via OSD. l Perform monitor self-test feature check to determine if scrambled screen appears in self-test mode. l Check for bent or broken pins in the video cable connector. l Restart the computer in the safe mode. Safety Related Issues Visible signs of smoke or sparks l Do not perform any troubleshooting steps. l Contact Dell immediately. Intermittent Problems Monitor malfunctions on & off l Ensure that the video cable connecting the monitor to the computer is connected properly and is secure. l Reset the monitor to Factory Settings. l Perform monitor self-test feature check to determine if the intermittent problem occurs in self-test mode. Missing Color Picture missing color l Perform monitor self-test feature check. l Ensure that the video cable connecting the monitor to the computer is connected properly and is secure. l Check for bent or broken pins in the video cable connector. Wrong Color Picture color not good Image retention from a Faint shadow from static image left on the the static image monitor for a long period displayed appears of time on the screen l Change the Color Setting Mode in the Color Settings OSD to Graphics or Video depending to the application. l Try different Color Preset Settings in Color Settings OSD. Adjust R/G/B value in Color Settings OSD if the Color Management is turned off. l Change the Input Color Format to PC RGB or YPbPr in the Advance Setting OSD. l Use the Power Management feature to turn off the monitor at all times when it is not in use (for more information, see Power Management Modes). l Alternatively, use a dynamically changing screensaver.