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Section 4 - Troubleshooting
Basic Requirements and Guidelines
Spectra Camera Familiarity
Before troubleshooting Spectra Pro/Image Pro Cameras, you should have received
training in Spectra servicing methods, have read the Spectra Service Manual, and know
how to use the Spectra Troubleshooting Charts.
Use of Logic Probe Model PRB-50
Follow all safety precautions and know the correct procedure and switch settings for
using this Probe, as described on the first page of the Spectra Troubleshooting Charts.
Pictorial and Schematic Diagrams
For convenient reference during troubleshooting, a pictorial and schematic diagrams of
the camera are included in this section. The pictorial identifies all test points and signal
paths.
Glossary of Abbreviations and Numbered Index
Abbreviations such as “RM “ (Ranging Module), “EM” (Exposure Module), etc., used in the
operating problem descriptions, are defined at the beginning of this section. Also, the
Operating Problems are listed in the approximate order of camera operation, and for
convenient reference, are numbered and indexed at the beginning of the section.
Basic Troubleshooting Approach
At the start, look for the obvious causes of a problem first: most occur at connections
points between the Exposure Flex and the Burndy connectors on the Ranging Board (Fig-
ure 4-1). Common causes of problems include:
• Wire connectors not completely pressed into pin connectors
• Contamination on the elastomeric (“zebra”) connector fingers
• Damaged elastomer in the “zebra” connector (Figure 4-2)
• Solenoids are not connected
• Encoder wires are not connected
• FEAT-TP (brown) wire is not connected, or is crossed with VBATT
(white) wire (see schematics)
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