Pfu And Tray Details - Ricoh MP 7503SP Field Service Manual

Tray 3 Paper Feed
• Tray 3 motor turns clockwise and rotates the pick-up and feed rollers.
• The reverse roller does not turn at this time because it has a one-way clutch.
• Tray 2 motor turns counterclockwise, and the belt drives the grip roller and reverse rollers in Tray 2
and Tray 3.
• The grip roller in Tray 2 must rotate in order to feed the paper up from Tray 3 into the machine.

PFU and Tray Details

Paper Feed and Separation
During Standby
• The adjacent feed motor [A] rotates, grip roller [B] also rotates, and the shaft of separation roller
[C] rotates in the direction of the arrow.
• The reverse roller rotates freely in either direction because the separation solenoid is off.
Paper Feed and Separation
• Separation solenoid [A] turns on, and then the adjacent feed motor [B] turns on. Next, pick-up
solenoid [C] turns on, and at the same time, the PFU feed motor turns on. The shaft of feed roller [D]
rotates, and the feed roller turns with the rotation of the one-way clutch. Next, pick-up roller [E]
(driven by relay gears) feeds the first sheet from the top of the stack.
• Separation roller [F], with its internal torque limiter that allows the roller to rotate in either direction
depending on the coefficient of friction with the paper above, also rotates with the feed roller.
Paper Transport
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