Elmo ST-1200 - Lower film loop increases during forward projection; Noise around Second sprocket during forward projection; Film passing is not smooth during auto-threading; Film cannot pass through second sprocket during auto-threading

MACHINE FRAME (Cont'd)
Case
Lower film loop
increases
during forward
projection
Noise around
Second sprocket
during forward
projection
Film passing
is not smooth
during auto-
threading
Film cannot
pass through
second sprocket
during auto-
threading
Film does not
wind on Reel
during auto-
threading
Point
Middle gear
1, 2
(P5-35,36)
Second
sprocket
(P5-13)
Tension roller
(P5-63)
Erasing head
(p5-5S)
Sound drum
(P5-19)
Head presser
(p5-51)
Film guide 3
(P5-74)
Film guide 4
(P5-11)
Take-up guide
(p5-3)
step
Replace either the damaged Middle
gear 1 or 2.
If the sprocket teeth has been
deformed, replace second sprocket.
Turn Second sprocket gradually to
search the position where the noise
is minimized.
Move the position of Balance lever
spring 1 by attaching plate to
search the position where the noise
is minimized.
If the film is interrupted by
Erasing head, adjust the position of
Erasing head.
If the film is interrupted by Sound
drum,
adjust the position of Head
stand.
If the space between Head presser (1)
assy and Head film guide either too
wide or narrow and the film is
interrupted around Head film guide,
bend Head presser holder assy to
adjust the space.
Adjust the position of Film guide 3
to pass the film smoothly.
If the film hits the edge of Reel,
adjust the position of Film guide 4.
If the angle of Take-up guide with
respect to Reel is distorted, bent
Release switch presser to obtain the
correct angle.
Remark
P-14
p-16
P-lS
P-lS
P-lS
p-16
P-14
P-4
- to be continued -
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