Dell U2212HM Monitor - Manual (Page 44)

Stuck-on Pixels LCD screen has bright spots 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: support.dell.com .
Brightness Problems Picture too dim or too bright Reset the monitor to Factory Settings.
Auto Adjust via OSD.
Adjust brightness & contrast controls via OSD.
Geometric Distortion Screen not centered correctly Reset the monitor to Factory Settings.
Auto Adjust via OSD.
Adjust horizontal & vertical controls via OSD.
NOTE: When using DVI-D input, the positioning adjustments are not available.
Horizontal/Vertical Lines Screen has one or more lines Reset the monitor to Factory Settings.
Perform Auto Adjust via OSD.
Adjust Phase and Pixel Clock controls via OSD.
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.
NOTE: When using DVI-D input, the Pixel Clock and Phase adjustments are not available.
Synchronization Problems Screen is scrambled or appears torn Reset the monitor to Factory Settings.
Perform Auto Adjust via OSD.
Adjust Phase and Pixel Clock controls via OSD.
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.
Safety Related Issues Visible signs of smoke or sparks Do not perform any troubleshooting steps.
Contact Dell immediately.
Intermittent Problems Monitor malfunctions on & off Ensure that the video cable connecting the monitor to the computer is connected properly and is secure.
Reset the monitor to Factory Settings.
Perform monitor self-test feature check to determine if the intermittent problem occurs in self-test mode.
Missing Color Picture missing color Perform monitor self-test feature check.
Ensure that the video cable connecting the monitor 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 Color Setting Mode in the Color Settings OSD to Graphics or Video depending on the application.
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.
Change the Input Color Format to PC RGB or YPbPr in the Advance Setting OSD.
Run the built-in diagnostics.
Image retention from a static image left on the
monitor for a long period of time
Faint shadow from the static image displayed
appears on the screen
Use the Power Management feature to turn off the monitor at all times when not in use (for more information, see Power Management
Modes ).
Alternatively, use a dynamically changing screensaver.
Product Specific Problems
Specific Symptoms What You Experience Possible Solutions
Screen image is too small Image is centered on screen, but does not fill
entire viewing area
Check the Scaling Ratio setting in Image Setting OSD
Reset the monitor to Factory Settings.
Cannot adjust the monitor with the buttons on
the front panel
OSD does not appear on the screen Turn off the monitor, unplug the power cord, plug back, and then turn on the monitor.
Check whether OSD is locked. If yes, press and hold the button above the power button for 10 seconds to unlock. See Menu Lock .
No Input Signal when user controls are pressed No picture, the LED light is green. When you
press "+", "-" or "Menu" key, the message "No
S-Video input signal", or "No Composite input
signal", or "No Component input signal"
appears
Check the signal source. Ensure the computer is not in the power saving mode by moving the mouse or pressing any key on the keyboard.
Check to make sure the Video Source to S-Video, Composite or Component is powered and playing video media.
Check whether the signal cable is plugged in properly. Re-plug the signal cable if necessary.
Reset the computer or video player.
The picture does not fill the entire screen. The picture cannot fill the height or width of the
screen
Due to different video formats (aspect ratio) of DVDs, the monitor may display in full screen.
Run the built-in diagnostics.
NOTE: When choosing the DVI-D mode, the Auto Adjust function will not be available.
Universal Serial Bus (USB) Specific Problems
Specific Symptoms What You Experience Possible Solutions
USB interface is not working USB peripherals are not working Check that your monitor is turned ON.