User guide

Matrox Marvel – User Guide 61
TV output
The following troubleshooting items address problems related to connecting graphics card output to
a TV or video recorder.
Problem TV image is garbled or unusable
(a blank screen, or rolling or overlapping screen images)
1
Cause Your TV or video recorder may not be properly connected.
1
Solution Make sure your TV or video recorder is properly connected. For more information, see
page 17.
2
Cause Your TV or video recorder may not be properly set up.
1
Solution If a TV is connected to your Matrox graphics card and the TV has a TV/VIDEO switch, set it
to
VIDEO. For more information, see your TV manual.
2
Solution If a video recorder is connected to your Matrox graphics card and the video recorder has a
TUNER/LINE switch, set it to LINE . For more information, see your video recorder manual.
3
Cause Matrox software may not be properly set up for TV output. Particularly, the TV standard
selected may not be correct.
1
Solution Windows 95/98 – See “TV output setup”, page 23.
4
Cause You may be using a DOS display mode without your Matrox graphics card being properly
configured for DOS TV output. DOS display modes are used for:
ƒ DOS programs that run full-screen
ƒ a full-screen DOS prompt under Windows
ƒ text displayed before Windows starts
1
Solution Make sure your Matrox graphics card is properly configured to support TV output for DOS
display modes. To enable TV output support for DOS display modes, use
Matrox System
Utilities
. You can install this software from your Matrox installation CD-ROM. For more
information, see the
Readme file included with this software.