12
Matrox Parhelia Precision SGT – User Guide
3
Cause
If your monitor uses BNC input, one or more connection settings may be incorrect.
1
Solution
Set each of your monitor RGB input and sync switches (if available) to 75 ohms, with the
sync set to “external”. These controls are usually switches on the back of your monitor.
4
Cause
If display problems occur after the startup screen of your operating system, your software
monitor settings may be incorrect.
1
Solution
Make sure correct software monitor settings are selected.
If your primary display is still usable,
see “Configure your monitor settings”, page 7
.
Otherwise, see the next troubleshooting item.
5
Cause
If you’re using an analog grayscale monitor, it may not support the monitor settings used by
your graphics card.
1
Solution
Make sure your Matrox product supports your analog grayscale monitor. For more
information on what monitors your Matrox product supports, see the Matrox Web site
(
www.matrox.com/mga
).
2
Solution
You may be able to obtain a software upgrade to support your analog grayscale monitor. For
more information,
see “Customer support”, page 30
.
Problem
After the startup screen, or after display settings are changed, the
screen image is garbled or unusable
(blank screen, rolling or overlapping screen images)
1
Cause
The Matrox display driver may be trying to use settings your monitor doesn’t support. This
can happen if a monitor was never selected in the software and the display resolution was
changed to one your monitor doesn’t support, or if the monitor connected to your computer
was changed without changing it in the software.
1
Solution
Windows 2000/XP
–
1
If your primary display is unusable, restart your computer in VGA mode (
see “Restarting
in VGA mode”, page 9
).
2
Right-click your Windows desktop background, then click
Properties
"
Settings
.
3
Move the
Screen area
(Windows 2000) or
Screen Resolution
(Windows XP) slider
down to its lowest setting, then click
OK
.
4
Restart your computer normally.
WARNING:
If incorrect software monitor settings are applied,
some
monitors can be
permanently damaged. For more information, see your monitor manual.
