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lines for ZOOM, FOCUS, and EXPOSURE MODE should all be approximately 0 VDC
without any input from the front panel switches on the remote control unit. With the
switches actuated, the level on the selected line should go to approxi12 or - 12
VDC. The internal interface assembly will accept voltages from approxi/-9 VDC to
over +/-20 VDC.
If all video has been lost, use a standard DVM on the ohm scale to check the center
conductor of the coax for continuity. This is normally Pin 2 on the standard connector, and
exits the ROS controller on the middle pin of the BNC connector on the rear panel. Normal
resistance should only be a few ohms unless the system cable is extremely long.
If all appears well at this point, the next step is to open up the camera housing and check
the Universal Interface Board for proper operation.
5.2
CAMERA DISASSEMBLY
The SCE-X, 36:1 Camera Assembly is fairly easy to disassemble.
1)
Remove the stainless steel snap ring retaining the rear endbell to the camera
housing.
2)
Remove the seal screw in the rear endbell.
Next Very Carefully:
3)
Use a standard air chuck (preferably with a rubber tip) to slowly pressurize
the housing until the camera slides out the back. Do not pressurize too
quickly or the camera may tend to become airborne as it exits the housing.
4)
Once the camera electronics assembly is out of the housing it should be
placed on a non-conductive surface and secured to prevent accidental
damage.
5.3
CAMERA OPERATIONAL CHECKS
On a camera with balanced video where a picture is not displayed on the receiving monitor,
fuse F1 and F2 on the Mode Selection board assembly should be checked for continuity.
These are 1/8A fuse elements that protect the camera module and output amplifiers from
excessive loads or in the event of accidental shorts to camera power or control lines.
If either F1 or F2 is open it can be removed and replaced. Fuse F3 on the board is a spare
fuse that can be used for replacement. Naturally, before powering up the camera again,
the cause of the output overload should be identified and corrected.
5.4
CAMERA TROUBLESHOOTING
The Universal Interface Board (51-11101) has test points to assist in troubleshooting
