Brother DCP-9010CN, Service Manual

Page: 66 / 598

2-11
Confidential
3.3.1 Plate-up function of the paper tray
The plate of the paper tray is pushed up by the force exerted by the motor not by springs so as
to keep the pressure on the paper pick-up roller at a certain level and enhance the
paper-feeding performance irrespective of the quantity of remaining papers in the tray.
At the time of inserting the paper tray into the main body of the product, the plate is kept
lowered. When the paper feed motor is operated under such condition, a driving force is
transmitted to the lift gear Z36M75 by way of several gears. The force is also transmitted to
the plate-up plate to push up the plate.
Fig. 2-10
When the plate is pushed up, the lift arm goes down and the hook B is released. The P/P gear
26 sector off the hook B rotates to push down the rib of the hook A. Subsequently, the ratchet
of the hook A for the planetary clutch ASSY deviates from the gear and the plate-up plate
stops its push-up function.
Fig. 2-11
The plate returns to the original position when the paper tray is taken out from the main body
of the product, and it repeats the aforementioned operation from the beginning when the paper
tray is inserted into the main body of the product.
Plate
Plate-up plate
Lift gear Z36M75
Hook B
Lift arm
P/P gear 26 sector
Hook A
Plate-up plate
Plate
Planetary clutch ASSY