Ricoh BR-C1a Basic Service Training page 310

Trays 2 and 3 (Universal Trays)
 Next, to confirm that the top of the stack is at the feed position,
the lift motor reverses a little, the upper limit sensor [C] checks
the position, and the lift motor raises the tray to correct the
position.
 The tray lift sensor actuator [D] ascends gradually as sheets are
fed until it actuates the tray lift sensor. Then, the lift motor turns
on to raise the tray again to the correct paper feed position.
Slide 310
No additional notes
Upper Limit Detection - 2
310
BR-C1 Training