Ricoh A-P4, Service Manual

Page: 339 / 381

When the paper tray is set in the machine, the pick-up roller [9] lowers. When the top sheet of paper
reaches the proper height for paper feed, the paper pushes up the pick-up roller, and the actuator [10]
on the pick-up roller supporter activates the paper height sensor [11] to stop the tray lift motor.
After several paper feed cycles, the paper level gradually lowers and the paper height sensor is de-
activated. The tray lift motor turns on again until this sensor is activated again.
When the paper tray is removed from the machine, the tray lift motor coupling gear disengages the pin on
the lift arm shaft, and the tray bottom plate then drops under its own weight.
Paper End Detection
If there is paper in the paper tray, the paper end feeler [A] is raised by the paper stack, and the paper end
sensor [B] is deactivates.
6. Details
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