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Page Title:
Table 5-1. Troubleshooting - continued |
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  TM 5-3610-220-14
C4
Table 5-1. Troubleshooting - Continued
Malfunction
Probable Cause
Corrective Action
e. Distance of lensboard not related to
e. Recheck the focusing chart for correct
same reduction ratio.
lensboard and copyboard distance.
f. Thick copy.
f. If copy has appreciable thickness, its
thickness must be added to the copyboard
counter readings in units of 1/100 inch.
8. Vibration or excessive noise during
a.
Impeller plates in vacuum turbo-
operation.
compressor not positioned properly.
b. Apply oil to wipers. Let the oil penetrate
b. Dry oil felt wipers causing lensboard
thoroughly before resuming operation.
or copyboard to vibrate while under
power.
c. Compressor fan in turbo-compressor
c. Align compressor fan on motor shaft
motor rubbing against rear end frame.
(para 6-8.a.).
d. Dry or burned-out bearings in turbo-
d. Replace defective bearings with new
compressor motors or drive motors.
ones (para 6-8 a. and 6-12.a.)
e. Loose mounting hardware.
e. Locate loose hardware and tighten.
f. Gear meshing.
f. Vibration or noise will result if drive gears
are not fully meshed. If gears are dry, apply
sufficient grease, or if foreign matter is
impacted between the teeth, clean
thoroughly, or if a tooth is damaged, dress
off or replace gear (para 6-32.a.).
12
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