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Dell Crystal Manual do utilizador
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Solving Problems

Dell™ Crystal Flat Panel Monitor User's Guide
  Troubleshooting the Monitor
  Common Problems
  Camera Problems
  Product Specific Problems
  Troubleshooting the Speakers
 
CAUTION:
Before you begin any of the procedures in this section, follow the
Troubleshooting the Monitor 
 Self-Test Feature Check
Your monitor provides a self-test feature that allows you to check whether your monitor is functioning properly. If the monitor and computer connections are
correct and nothing appears on the screen, run the monitor self-test by performing the following steps:
1. Turn off both your computer and the monitor.
2. Unplug the video cable from the back of the computer or output device to ensure proper Self-Test operation.
3. Turn on the monitor.
If the monitor is working and cannot sense a video signal, a floating self test dialog box appears on the screen.               
NOTE:
While in the self-test mode, the monitor displays the Dell logo.
NOTE:
Self test dialog box also appears during normal system operation if the video cable becomes disconnected or damaged. Turn off your
monitor and reconnect the video cable; then turn on both your computer and the monitor.
If your monitor screen remains blank after you reconnect the cables, check the video controller and computer.

Common Problems

The following table contains general information about common monitor problems you might encounter and the possible solutions.
COMMON SYMPTOMS
PROBLEM DESCRIPTION
No Video/DELL logo off
No picture, monitor is dead.
No Video/DELL logo 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.
Brightness Problems
Picture too dim or too bright.
Horizontal/Vertical Lines
Screen has one or more lines.
Safety
Instructions.
POSSIBLE SOLUTIONS
Check the cable connections.
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Verify that the monitor and computer power cables are connected to a working
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electrical outlet.
Ensure that you have pressed the power button.
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Increase brightness & contrast controls.
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Perform monitor self-test feature check.
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Check for damaged leads on the connector head.
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Reboot your computer and monitor.
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Eliminate video extension cables.
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Perform monitor reset.
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Lower video resolution or increase font size.
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Perform monitor reset.
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Check environmental factors.
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Relocate and test in another room.
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Cycle power on-off.
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These are pixels that are permanently off and this is a natural defect that occurs
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in LCD technology.
Perform monitor reset.
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Adjust brightness & contrast controls.
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Perform monitor reset.
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Perform monitor self-test feature check and determine if these lines are also in
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self-test mode.
Check for damaged leads on the connector head.
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