Dell E1909Wb Manuale d'uso - Pagina 29

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The following table contains general information about common monitor problems you might encounter and the possible solutions.
Common Symptoms
No Video/Power LED off
No picture
No Video/Power LED on
No picture or no brightness
Poor Focus
Picture is fuzzy, blurry, or
ghosting
Shaky/Jittery Video
Wavy picture or fine movement
Missing Pixels
LCD screen has spots
Stuck-on Pixels
LCD screen has bright spots
Brightness Problems
Picture too dim or too bright
Geometric Distortion
Screen not centered correctly
Horizontal/Vertical Lines
Screen has one or more lines
Synchronization Problems
Screen is scrambled or appears
torn
Safety Related Issues
Visible signs of smoke or
sparks
Intermittent Problems
Monitor malfunctions on & off
Missing Color
Picture missing color
Wrong Color
Picture color not good
Image retention from a static
Faint shadow from the static
image left on the monitor for a 
image displayed appears on
long period of time
the screen
 

Product Specific Problems

What You Experience
Ensure that the video cable connecting the monitor and the computer is properly
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connected and secure.
Verify that the power outlet is functioning properly using any other electrical equipment.
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Ensure that the power button is depressed fully.
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Increase brightness & contrast controls via OSD.
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Perform monitor self-test feature check.
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Check for bent or broken pins in the video cable connector.
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Run the built-in diagnostics.
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Perform Auto Adjust via OSD.
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Adjust the Phase and Pixel Clock controls via OSD.
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Eliminate video extension cables.
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Reset the monitor to Factory Settings.
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Change the video resolution to the correct aspect ration (16:10).
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Perform Auto Adjust via OSD.
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Adjust the Phase and Pixel Clock controls via OSD.
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Reset the monitor to Factory Settings.
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Check environmental factors.
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Relocate the monitor and test in another room.
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Cycle power on-off.
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Pixel that is permanently off is a natural defect that can occur in LCD technology.
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Run the built-in diagnostics.
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Cycle power on-off.
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Pixel that is permanently off is a natural defect that can occur in LCD technology.
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Run the built-in diagnostics.
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Reset the monitor to Factory Settings.
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Auto Adjust via OSD.
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Adjust brightness & contrast controls via OSD.
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Reset the monitor to Factory Settings.
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Auto Adjust via OSD.
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Adjust brightness & contrast controls via OSD.
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NOTE:
Reset the monitor to Factory Settings.
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Perform Auto Adjust via OSD.
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Adjust Phase and Pixel Clock controls via OSD.
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Perform monitor self-test feature check and determine if these lines are also in self-test
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mode.
Check for bent or broken pins in the video cable connector.
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Run the built-in diagnostics.
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NOTE:
Reset the monitor to Factory Settings.
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Perform Auto Adjust via OSD.
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Adjust Phase and Pixel Clock controls via OSD.
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Perform monitor self-test feature check to determine if the scrambled screen appears in
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self-test mode.
Check for bent or broken pins in the video cable connector.
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Restart the computer in the safe mode.
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Do not perform any troubleshooting steps.
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Contact Dell immediately.
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Ensure that the video cable connecting the monitor to the computer is connected
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properly and is secure.
Reset the monitor to Factory Settings.
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Perform monitor self-test feature check to determine if the intermittent problem occurs in
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self-test mode.
Perform monitor self-test feature check.
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Ensure that the video cable connecting the monitor to the computer is connected
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properly and is secure.
Check for bent or broken pins in the video cable connector.
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Change the Color Setting Mode in the Color Settings OSD to Graphics or Video
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depending on the application.
Try different Color Preset Settings in Color Settings OSD. Adjust R/G/B value in Color
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Settings OSD if the Color Management is turned off.
Change the Input Color Format to PC RGB or YPbPr in the Advance Setting OSD.
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Run the built-in diagnostics.
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Use the Power Management feature to turn off the monitor at all times when not in use
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(for more information, see
Alternatively, use a dynamically changing screensaver.
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Possible Solutions
When using '2: DVI-D', the positioning adjustments are not available.
When using '2: DVI-D', the Pixel Clock and Phase adjustments are not available.
Power Management
Modes).