Ricoh FT5034C Service Manual page 237

1/3 Revolution Switch
Actuator Cam
Front Transfer Wheel
The CPU monitors the position of the bins through pulses generated by the micro
switch (1/3 revolution switch) and the actuator cam on the front transfer wheel. The
actuator cam has three grooves 120 degrees apart. As the front transfer wheel turns,
the ridge on the actuator cam activates the 1/3 revolution switch. When the bins are
properly positioned, the groove in the actuator cam deactivates the switch and the
bin drive motor stops turning.
When the copier main switch is turned on, all the bins are lowered until the bin home
position switch is activated. Then the top bin is moved up to the receiving position
when the Start key is pressed, or Sort/Stack mode is selected.
There is a upper limit switch at the top of the rear bin guide for safety. If the 1/3
revolution switch fails to stop the transfer wheels and the top bin reaches the upper
limit switch, the bin drive motor is stopped.
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