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Troubleshooting
49
Troubleshooting
General tips
• If one display from a multi-head system exhibits problems, try
to eliminate the problem by switching video cables or power
supplies. In that way you can find out if the problem resides in
the display or not.
Problems and solutions
Problem description
Possible tests or solutions
Screen remains black
•
Please check the installation
procedure in this manual
•
If the LED at the front is orange, the
display is in stand-by
•
Check in the Windows Display
Properties if the display controller
video heads are attached. If not, there
will be no image on the screen.
•
The external power supply may be
defective
Image exhibits noise or
interference
•
The video cable may be of poor
quality
•
DVI video cable may not be firmly
connected to the PC or to the display
•
Display may need Phase and
Frequency adjustments (if analog
video is selected)
Image contains missing
pixels
•
A number of missing pixels may be
normal (inherent in LCD technology)
The PC does not start up
•
Check the CMOS settings in the PC
BIOS
•
The display controller may not be
firmly seated in the PCI connector
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