Dell D2721H Руководство пользователя - Страница 42
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Shaky/Jittery Video
Missing Pixels
Stuck-on Pixels
Brightness Problems
Geometric Distortion
42
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Troubleshooting
Wavy picture or fine
movement
LCD screen has
spots
LCD screen has
bright spots
Picture too dim or
too bright
Screen not
centered correctly
• Perform Auto Adjust via OSD.
• Adjust the Phase and Pixel Clock
controls via OSD.
• Reset the monitor to
• Check environmental factors.
• Relocate the monitor and test in
another room.
• 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:
www.dell.com/pixelguidelines.
• 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:
www.dell.com/pixelguidelines.
• Reset the monitor to
• Auto Adjust via OSD.
• Adjust brightness & contrast controls
via OSD.
• Reset the monitor to
• Auto Adjust via OSD.
• Adjust brightness & contrast controls
via OSD.
NOTE: When using 'HDMI', the
positioning adjustments are not
available.
Factory
Reset.
Factory
Reset.
Factory
Reset.