When the paper feed tray is set in the machine, the set switch at the rear of the tray switches ON, and it is detected that the tray is set.
The coupling [2] between the shaft [3] at the rear of the tray and the lift motor (M9) (M10) [1] then engages, the motor rotates, and the tray base plate [4] is lifted.
The tray base plate lifts until the paper surface pushes the pick-up roller up [5], the upper limit sensor (S15) (S25) [6] switches OFF (interrupt), and the machine enters paper feed standby mode.
When the tray is removed, the coupling is released, and the base plate moves down. The lift motor then rotates until the coupling returns to the home position.
