Dell U2422HE Users Guide - Page 88

Quality and Pixel Policy, see Dell, Cycle power On-Off.

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No Video/Power LED on Poor Focus Shaky/Jittery Video Missing Pixels Stuck-on Pixels No picture or no • Increase brightness & contrast brightness controls via OSD. • Perform monitor self-test feature check. • Check for bent or broken pins in the video cable connector. • Run the built-in diagnostics. • Ensure that the correct input source is selected in the Input Source menu. Picture is fuzzy, • Eliminate video extension cables. blurry, or ghosting • Reset the monitor to factory settings. • Change the video resolution to the correct aspect ratio. Wavy picture or fine movement • Reset the monitor to factory settings. • Check environmental factors. • Relocate the monitor and test in another room. LCD screen has 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: http:// www.de l l.com/pixelguidel ines. 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: http:// www.de l l.com/pixelguidel ines. 88 │ Troubleshooting

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88
±±
│
± ± Troubleshooting
No Video/Power
LED on
No picture or no
brightness
•
Increase brightness & contrast
controls via OSD.
•
Perform monitor self-test feature
check.
•
Check for bent or broken pins in the
video cable connector.
•
Run the built-in diagnostics.
•
Ensure that the correct input source is
selected in the
Input Source
menu.
Poor Focus
Picture is fuzzy,
blurry, or ghosting
•
Eliminate video extension cables.
•
Reset the monitor to factory settings.
•
Change the video resolution to the
correct aspect ratio.
Shaky/Jittery
Video
Wavy picture or
fine movement
•
Reset the monitor to factory settings.
•
Check environmental factors.
•
Relocate the monitor and test in
another room.
Missing Pixels
LCD screen has
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:
http://
www.dell.com/pixelguidelines
.
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:
http://
www.dell.com/pixelguidelines
.