Matrox Orion Installation And Hardware Reference page 47

Check that the brightness and contrast controls are set
correctly.
Set the monitor's switches (if any) to 75 ohms for the video
(RGB) inputs, and set the synchronization to ' external' (and
to high-impedance if this option is available). If there is a
Digital/Analog switch on your monitor, set it to Analog.
Ensure that Matrox Orion is sitting evenly and is fully
inserted into its slot. To do this, press the board down firmly.
When I run an application, there is no picture on my video
display. The monitor is blank.
The application you are running might be attempting to select
a resolution that is not supported by your monitor. Check your
monitor's manual for supported resolutions.
The colors are wrong.
Incorrect colors indicate that either the cabling (for monitors
that do not have a built-in cable) or the monitor impedance is
incorrect.
Ensure that the red, green, and blue lines are connected to
the corresponding red, green, and blue monitor inputs (some
monitor input connectors are not in the expected order).
Make sure your monitor's RGB inputs are set to 75 ohms.
Several monitors have individual switches to set the
impedance of the inputs. Make sure that they are all set to
75 ohms.
On some computers, you must run a setup program or set
DIP switches to select the main video adapter type. For most
computers, you should select a VGA type. Refer to the user
manual for your computer.
Check the cable continuity.
The display is not centered.
Adjust the centering control of your monitor to position the
picture on the screen (refer to your monitor's manual).
Common problems and solutions 47