Bell & Howell - Projector - Filmosound 641 - 642 ... - Cine Information
Bell & Howell - Projector - Filmosound 641 - 642 ... - Cine Information
Bell & Howell - Projector - Filmosound 641 - 642 ... - Cine Information
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FAULT FINDING GUIDE<br />
3. MISCELLANEOUS TROUBLES AND REMEDIES<br />
TROUBLE PROBABLE CAUSE REMEDY<br />
a. Nothing runs Damaged power cable<br />
b. Motor hums but<br />
does not run<br />
c. Motor runs but<br />
mechanism does<br />
not run<br />
d. Rewind does not<br />
operate<br />
e. Take-up does not<br />
operate<br />
f. Feed spindle does<br />
not revolve in<br />
reverse<br />
Loose connections<br />
Fuse blown<br />
Starting circuit open or<br />
shorted<br />
Drive belt off pulley<br />
Motor or driven pulley<br />
loose on shaft<br />
Damaged belt<br />
Animation clutch spring<br />
broken (Des. <strong>642</strong> only)<br />
Rewind clutch not engaging<br />
Rewind clutch slipping<br />
Repair or replace cable<br />
Repair<br />
Replace fuse<br />
Repair loose or transposed<br />
connections<br />
Replace starting capacitor<br />
Replace starting relay<br />
Reinstall belt<br />
Position pulley and tighten<br />
setscrews<br />
Replace belt<br />
Clutch balls or spring lost Replace<br />
Dirt in feed spindle clutch<br />
Clutch balls or spring lost<br />
g. Gate will not lock Latch spring set too close<br />
to lens mount stop<br />
h. Shuttle run 8 but<br />
sprockets do not<br />
revolve<br />
Animation clutch spring<br />
broken or lost (Des. <strong>642</strong> only)<br />
i. Short lamp life Line voltage in excess of<br />
lamp voltage<br />
j. Speed changer<br />
doe8 not work<br />
Blower belt off pulley<br />
Dirt in blower<br />
Knob or shifter crank loose<br />
Shifter out of position<br />
6<br />
Replace spring<br />
Adjust (para. 48)<br />
Adjust (para. 48)<br />
Clean<br />
Replace<br />
Adjust<br />
Replace<br />
Use lamp of correct<br />
voltage<br />
Replace<br />
Clean<br />
Tighten setscrews<br />
Adjust shifter