Elmo ST-1200 - Motor vibration; Motor runs relatively slow; Motor runs but very slow; Yet Motor switch knob positioned R, Motor runs forward

TRANSFORMER & MOTOR (Contfd)
Case
Motor
vibration
Motor runs
relatively
slow
Motor runs
but very slow
Yet Motor
switch knob
positioned R,
Motor runs
forward
Point
Motor bearing
(P7-61)
Fan casing
(1),(2),(3)
(P-7,57,59,60)
Line voltage
(P7-46)
Motor torque
(P7-61)
Film feeding
mechanism
(P3-f)
Clutch roller
(P7-8)
Drive belt
(P7-
4)
Motor stator
(P7-61)
Motor bearing
(P7-6l)
Micro switch
(p6-i)
Step
Take out Drive belt and check the
jolting of Motor shaft to find out the
defacement of Motor bearing.
If so, replace Motor assy.
If Fan would be interrupted by Fan Cas-
ings, adjust the position of Fan casing
(1),(2),(3).
Check the line voltage whether would drop
due to fluctuation.
If so, stop the projection or use a
voltage regulator.
If the motor torque would be not suf-
ficient to achieve proper speed, replace
Motor assy.
Turn Threading knob manually, and
if its movement seems to be heavy,
lubricate all gears, shafts and cam.
If Clutch roller could not be joined
with Shutter assy due to slip, adjust
the position of Clutch lever (2) assy
to convey the rotation of Motor.
If the deterioration of Drive belt would
be causing slip, replace Drive belt.
Although taking out Drive belt and run-
ning Motor itself, the rotation is very
slow due to burning-up or poor layer
insulation of Rotor.
If so, replace Motor assy.
Although taking out Drive belt and run-
ning Motor itself, the rotation is very
slow due to seizure of Bearing.
Check Micro switch SW7 whether could not
operate properly due to looseness of
attaching screw.
-22-
Remark
P-9
P-9
P-8
P-9
P-13
P-IO
P-li
P-9
P-9
P-12