Service Manual

TRAY 1/2 PAPER FEED UNIT
2-J-1
2 UNIT EXPLANATION
TRAY 1/2 PAPER FEED UNIT
[1] Composition
Caution: Trays 1 and 2 have the same shape
and mechanisms.
[2] Mechanisms
*1 Paper lift-up
a) Hoisting of up/down plate
The up/down plate is lifted up by up/down wires. When the paper tray is loaded, the up drive motor 1 (M19),
2 (M20) rotates to wind the up/down wires around the drive pulleys and consequently the plate moves up
and push up papers set in the tray. When the tray upper limit PS1 (PS20), 2 (PS21) detects the actuator
of the plate that has moved up, the up drive motor 1 (M19), 2 (M20) stops.
Side guides
Trailing edge stopper
Paper size detection PS1-1, 2-1 (PS32, PS33)
Paper size detection PS1-2, 2-2 (PS35, PS36)
Paper size detection VR1, 2
Wire A
Wire B
Up drive motor 1 (M19), 2 (M20)
Drive pulley
Double feed prevention roller
Paper feed roller
Feed roller
Mechanism Method
*1 Paper lift-up Up: Paper up/down plate driven by up/down wires
Down: Falls down by its own weight
Tray loading Load from the front door side
Double feed prevention Torque limiter
*2 1st paper feed Paper feed roller
Pick up solenoid 1 (SD8), 2 (SD9)
No paper detection Photosensor + Actuator
*3 Paper size detection (Universal) Width: VR
Length: Photosensor + Actuators (two)
Di850g.book1ページ２００２年７月１２日 金曜日 午前８時３６分