Download Spectra/Image Repair Manual

Spectra System/Image System
Service Manual
In “B” of Figure 2-30, the motor drives the timing gear and the cam on the face
of the timing gear forces EOC/S9 down, to make with VER. With EOC/S9
closed, the motor will continue to run. Once the cam face moves away from
EOC/S9, the switch contacts open, the motor shuts off and then coasts to bring
the timing gear back to the condition shown in “A” of Figure 2-30.
Another cam, on the back of the timing gear, moves simultaneously with the
cam on the face. The cam on the back of the timing gear actuates the pick slide
which does two things. First, it engages the dark slide in the film pack and pulls
it forward, into the motor-driven rollers. The rollers eject it out of the camera.
Second, a hook on the left end of the pick engages one of the ratchet teeth on
the counter. It indexes the counter from blank to “10” (Figure 2-31).
Counter
Timing Gear
Pulls Pick
Return Spring
Pick Slide
Pick
Indexes
Counter
Figure 2-31 Pick Slide Ejecting Dark Slide and Indexing Counter
As the counter wheel indexes, a pin which holds S9 closed, moves away from
the wireform switch (Figure 2-32). (Note that this occurs while EOC/S9 is still
closed.) As a result, the switch opens and remains operational for the
remainder of all the exposure cycles until the film pack is removed. When the
pack is removed, the pack pawl disengages from the counter ratchet and spring
action brings the counter back to its starting condition. In the starting condition,
the pin again holds S9 closed, so it will be ready to divert power for the next
dark slide cycle.
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