TM 5-6675-324-14
(5) The cam assembly is driven from the drive motor via the gear train which
also powers the drive roller. As the cam rotates, it actuates the left and right
delay switches. The right delay switch controls power to the whole copy machine,
even if the paper trigger switch is opened. The left delay switch applies 280 V to
the exposure lamp.
(6) The cam assembly is geared to the main drive roller. This ensures that
the drive motor, exposure lamp, and cam assembly remain synchronized in their
operation.
(7) At the completion of the cycle, the delay switches are opened and the
exposure lamp goes out, but power is still applied to the power transformer and
blower motor by the post cool thermostat.
(8) The post cool thermostat is located underneath the top front roller and
is actuated by the heat output of the exposure lamp. At the end of the copy cycle,
the post cool thermostat remains closed and maintains the circuit supplying power to
the drive motor and blower motor. Both motors continue to operate until the
temperature drops to a point where the post cool thermostat opens, removing power
from the copy machine.
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