Kodak Instamatic M Series, Ремонт

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38/KODAK M-SERIES PROJECTORS
T
he Kodak service manuals provide good background
information in the operation of the M-series projectors.
Since you can no longer obtain all of the special tools
described, we have edited the following section of Kodak's
M80 service manual.
1. TOOLS, SPECIFICATIONS
Useful Service Tools
A suitable pull-down claw protrusion gauge can be made
as shown in Fig. K1.
Electrical
110 - 125 volt, 60 cycle, AC only; shaded pole induction
motor.
Projection lamp
M70, M80, M85—150 watt, 120V, ASA Code DNE
M90, M95—150 watt, 21 volt, ASA Code DNF
Projection Lenses
KODAK Projection Ektanar, 28mm, f/1.5
KODAK Projection Zoom Lens, 20-32mm, f/1.5
KODAK Projection Ektanar, 22mm, f/1.5
KODAK Projection Ektar, 28mm, f/1.0
Serial Number
The serial number is located on a plate by the film cutter.
2. OPERATION
Operation of the M80 will be described. Operation of the
M85 and M95 will be covered by applicable notes as the
description proceeds.
Pulldown System
The M80 and M95 projectors have a skip- frame pulldown
system that results in flickerless projection at 6, 18
(
Normal ), and 54 frames per second in Forward or
Reverse . The M85 operates only at 18fps in both Forward
and Reverse .
To accommodate the two films (regular 8 and super 8),
there are two claws mounted on opposite sides of the
same claw post assembly, Fig. K2.
A single-blade shutter assembly, mounted on the shutter-
drive shaft but free to rotate relative to it, is driven by a
dog on the up-and-down cam. The shutter assembly
includes a pinion which engages the teeth of the in-and-
out cam.
The shutter-drive shaft is belt-driven from a motor at a
constant speed of 54rps, and the pulldown claws are
moved up and down at this rate by cams fastened to the
shutter shaft, Fig. K2.
M80 OPERATION & SPECS FROM KODAK
FIG. K1
FIG. K2
FIG. K3
The cam that is used as a counterbalance in the
CARALUX, M70, and M90 is put to work in the M80,
M85, and M95. The super-8 claw rides on the first cam,
and the regular-8 claw on the counterbalance cam.
NOTE:
As the cam shaft rotates counterclockwise, the
super 8 and regular 8 claws move in opposite directions
relative to each other. As the super-8 claw strokes UP, the
regular-8 claw strokes DOWN, Fig. K4.
The single in-and-out cam is driven by the pinion of the
shutter assembly at 9:1 reduction and operates at a
constant 6 rps.
This cam has 9 equally spaced depressions on its surface;
one extends nearer to the center than the others, two
extend an intermediate distance, and the other 6 a shorter
distance, Fig. K5.
The M85 cam has only 3 equally spaced
depressions, all the same length.
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