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12-Inch B&W Monitor
Appendix A – Troubleshooting
Problem
Possible Solution
No Video
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.
Bad Video
If no video equipment is "looped through" the
monitor, make certain that a cable is NOT
connected to the loop-through connector.
Make certain the SCAN MODE selector switch is set
to the correct standard. EIA is used in most of North
America. CCIR is used in most of Europe.
Adjust the BRIGHT knob.
Video too bright
or dark
Check that the lens aperture is set correctly
Bad video
Adjust the CONTRAST knob.
contrast
Skewed picture
Adjust the H-HOLD knob.
Rolling picture
Adjust the V-HOLD knob.
AMM12
9
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