Tray Lift
SM 17 D352
LCT PB3050
D352
2.3 TRAY LIFT
When the paper feed tray is put in the machine, the tray switch on the back turns on and
the tray lift motor [A] starts. The base plate lift shaft [B] is coupled to the lift motor at the
shaft [C], so the base plate [D] of the tray is lifted. After a short while, the top of the paper
stack contacts the pick-up roller and lifts it up. Then the motor stops lifting the plate when
the upper limit sensor actuator enters the sensor ( "Electrical Component Layout").
When paper in the tray is used up, the pick-up roller is gradually lowered, and the actuator
leaves the lift sensor [E]. When this happens, the lift motor begins turning again. The tray
will then be lifted until the actuator enters the upper limit sensor again).
When the tray is removed from the copier, the coupling between the lift motor [A] and base
plate lift shaft [B] is broken and the base plate goes into a controlled free fall (using a
damper to slow the fall and prevent damage).
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