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9-3 C2400 TROUBLESHOOTING CHART
N o image on
the TV monitor
Image on the TV
monitor i s not
clear.
Noisy image
Distorted image
Shaded image
Are the pilot lamps of the CCU and TV monitor on?
Are the video out of the CCU and the video in of the TV
monitor properly connected?
Are the CCU and the TV camera head properly connected?
Is the OFFSET pot. on the front panel turned fully CV?
Is the GAIN pot. on the front panel turned fully CCW?
Is there an optical path between the object and the TV
camera head?
Is the green LED on the front panel o f the CCU on?
SIT protection circuit i s working, i s n ' t i t ?
Is the green LED on the front panel o f the CCU on?
Are the CONTRAST and BRIGHTNESS on the TV monitor
adjusted correctly?
Is the object in focus?
Is the resolution of the optical path(microscopy)
satisfactory?
Is the optical aberration satisfactory?
Is the camera faceplate surface clean?
is the green LED on the front panel o f the CCU on?
Is the 75Q termination of the TV monitor on?
Is the system properly grounded?
Are the optical path and the TV camera head connected
correctly? (Electrical connection i s required.)
Are there sources of electrical noise i n the vicinity
of the system?
Are there any sources of magnetic field around the TV
camera head and the TV monitor?
Is the optical imaging system properly aligned?
Are the H.HOLD and V.HOLD of the TV monitor adjusted
correctly?
Are the pots. o f the shading corrector adjusted
correctly?
Is the shading of the optical path satisfactory?
—22—
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