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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
2. Copyboard fails to hold copy properly,
a.
Copyboard
suction not directed
a. Measure size of copy and turn operating
properly.
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
c. Diverter valve plate is in
open position,
position.
permitting suction to the
transparency
holder and thereby lessening
the vacuum to
the copyboard. Push the
diverter knob
completely in.
d. Clogged suction hole in copyboard.
d. Foreign matter in holes of copyboard
causes an unequal distribution of suction.
Remove copyboard front plate and clean
(para 6-14. b.).
e. Vacuum turbo-compressor defective.
e. Replace defective parts of vacuum turbo-
compressor assembly (para6-2) or vacuum
turbo-compressor
motor
(para
6-6).
Replace entire unit if necessary.
3. Arc lamp flickers.
a. Gap between carbons too great to
a. Adjust carbons (para 4-27.s.).
provide consistent lighting.
b. Drafty conditions around operating
b. Eliminate all drafts around working area
location.
of cameras.
c.
Carbons of different lengths in
c. Substitute carbons of same length or
holders.
replace with new carbons (para 4-27. a.).
d. Contacts in magnetic contactor not
d. Smooth badly pitted or burned contacts
making proper contact.
with a fine file (para 6-36).
Replace
defective parts (para6-360 if necessary.
e. Defective sensing device.
e. If one lamp does not flicker, switch the
cables from the operating lamp sensing
device to suspected sensing device. If the
lamp which did not flicker now does, replace
the defective sensing device (para 6-37).
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