Functional And Electrical Description - Ricoh FT5540 Service Manual

5. FUNCTIONAL AND ELECTRICAL DESCRIPTION

The bottom plate [A] of the large capacity tray is raised and lowered by a wire and pulley
mechanism. This mechanism is driven by the tray motor [B] (reversible ac motor).
Drive power is transmitted directly to the tray drive shaft via a worm gear and worm wheel [C].
The tray wires have braces on them; these braces hold the ends of the two lift rods [D] which
support the tray bottom plate. When the wire drive pulley turns clockwise, the braces on the
wires raise the lift rods and the tray bottom plate. The bottom plate rises until the paper in the
tray pushes up the pick-up roller, actuating the lower lift sensor.
The tray bottom plate lowers when the tray drive motor turns the wire drive pulley
counterclockwise. It stops moving down when the actuator plate [E], on the left lift rod,
actuates the tray down sensor [F].
10-5
31 August 1989