20-Inch B&W Monitor
AMM20
Appendix A – Troubleshooting
Problem
No Video
Bad Video
Possible Solution
Check that all components in the system (monitor,
cameras, VCRs, multiplexers, etc.) have power and
are turned on.
Check that the camera lens cap is removed and the
lens is set to proper aperture.
Check coaxial cable(s) for proper connections and
condition.
Make certain the
BRIGHT
or
CONTRAST
control
knobs are not turned to their extreme positions.
Connect a known good video source directly to the
monitor to make certain the monitor is not the
problem.
If no video equipment is “looped through” the
monitor, make certain that a cable is NOT
connected to the loop-through connector.
Set the
SCAN
switch to the
OVER
position.
Check position of
DC REST
switch.
Adjust the
BRIGHT
knob.
Check that the lens aperture is set correctly
Bad video
contrast
Skewed picture
Rolling picture
Adjust the
CONTRAST
knob.
Adjust the
H-HOLD
knob.
Adjust the
V-HOLD
knob.
9
Black Border
Video too bright or
dark
Summary of Contents for AMM20
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