CHAPTER 5
DIRECT SUPPORT AND GENERAL SUPPORT
MAINTENANCE INSTRUCTIONS
Section I. REPAIR PARTS, SPECIAL TOOLS AND EQUIPMENT
5-2. Tools and Equipment
5-1. General
Instructions in this section and in succeeding sections of this
a. The operations detailed in this chapter may be
chapter are published for the use of maintenance personnel
performed with standard mechanic's hand tools.
responsible for general support and higher levels of
b. Repair parts and equipment are listed and illustrated in
maintenance of the copying camera. They contain information
the repair parts and special tools list covering direct and general
on maintenance which is beyond the scope of the tools,
support maintenance in TM 5-3610-220-35P.
equipment, or supplies normally available to using
organizations.
Section II. TROUBLESHOOTING
The possible remedy recommended is described opposite the
5-3. Use of This Section
probable cause.
This section provides information useful in the diagnosing and
correction of unsatisfactory operation or failure of the copying
camera or any of its components. Each trouble symptom
stated is followed by a list of probable causes of the trouble.
Table 5-1. Troubleshooting
Malfunction
Probable Cause
Corrective Action
1. Vacuum back fails to hold film properly
a. Improper selection of vacuum back valve
a. Measure size of film and move
ports.
valve handle to a position best suited
to hold film on vacuum back.
b. Opening in vacuum flexible hose.
b. Remove hose clamps at the
vacuum back valve housing and
suction pipe on camera skid, and
remove flexible hose. If opening in
hose is comparatively small, make a
temporary repair with electrical tape.
c. Vacuum turbo-compressor defective.
c. Replace defective parts of
vacuum turbo-compressor assembly
compressor motor (para 6-6).
Replace entire unit if necessary.
2. Copyboard fails to hold copy properly
a. Copyboard suction not directed properly.
a. Measure size of copy and turn
operating knob to the correct
position.
b. Operating gate out of line.
b. Align operating gate on operating
shaft (para 6-16. a. ).
c. Diverter valve plate not in closed position.
c. Diverter valve plate is in open
position, permitting suction to the
transparency holder and thereby
lessening the vacuum to the
copyboard. Push the diverter knob
completely in.
d. Clogged suction holes in copyboard.
d.
Foreign matter in holes of
copyboard causes and unequal
distribution of suction.
Remove
copyboard front plate and clean
5-1
