American Dynamics Excalibur 168, Installation And Service Manual

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APPENDIX B
MP168 Matrix Switcher/Controller System
Section 1- Video Troubleshooting
The Video Troubleshooting section focuses on problems with viewing video signals. This section covers acquiring
video signals generated by video input devices, processing the signals through the MP168 Switcher, and outputting the
signal to suitable video output devices.
Problem Possible Cause Suggested Solution
No picture on a single monitor Monitor not connected to VOM
Verify connection to appropriate VOM
module
Camera connection broken. Verify connection to power source
Selected camera not connected to
power source Verify connection to power source
Monitor not functioning Change video cable from faulty monitor
to another monitor- if replacement
functions properly, replace faulty
monitor
No picture on multiple system
monitors VOM module(s) not properly
installed Verify proper installation of the
appropriate VOM module(s)`
No power to MP168 Switcher Verify connection to power source
Verify proper operation of the MP168
Bay by verifying operation of +/- 8 Vdc
LEDs on front of PSM module and then
all other monitors
Video pictures too bright, too dark,
or bad color Cameras not terminated properly Terminate camera
Camera iris not adjusted properly Reset iris
Black horizontal lines through the
picture, or picture not stable Faulty camera sync or video
output Exchange camera with one of known
quality
Vertical Phase of MP168 requires
adjustment Refer to page 2-18 for Vertical Phase
adjustment instructions
Poor picture quality on monitor Monitor out of adjustment Call camera number zero to monitor and
adjust color using the MP168 internal
color bar generator
Selected camera not displaying on
any monitor
Camera not connected to VIM Verify connection to appropriate VIM
module
Camera not connected to power
source Verify connection to power source
Coax cable and/or coax
connectors from camera are
faulty Verify integrity of coax cable and
connectors by connecting monitor
directly to camera with separate piece of
coax
Picture on monitor appears
washed-out Camera Iris stuck open Replace lens
B-2