Sharp AR-BC320, Service Manual, Page: 72 / 344

AR-BC320 DESCRIPTIONS OF EACH SECTION 7 - 31
d. Paper exit section
(4) Operational descriptions
a. Paper feed tray section operation
The paper pickup roller moves up and down to press paper and
separates the top paper, which is fed to the paper feed roller.
The paper feed roller feeds paper to the paper transport section.
The separation roller prevents against double feed.
Up and down movement of the pickup roller is driven by the pickup
solenoid, and ON/OFF control of the pickup roller and the paper
feed roller is performed by the paper feed clutch.
The paper lift plate lifts paper to control the upper limit position of
paper so that the pressure between the top paper and the pickups
roller remains constant. Lifting is performed by the lift motor and
the lift gear.
The lift position is detected by the paper upper limit detector to
control the pressure between the top paper and the pickup roller.
No. Name Code, Signal name Function
1 Paper exit sensor POD2 Detects discharged paper.
2 Offset motor OSM Drives the paper exit offset.
3 Shifter home position sensor HPOS Detects the offset home position.
4 FD paper exit full sensor TFD Detects the face-down paper exit tray full.
5 Paper exit switch gate solenoid GSS Drives the face-up/down switch gate.
6 FU paper exit full sensor
5
5
6
6
1
2
3
4
Paper feed motor
Paper feed roller
Paper feed clutch
Separation roller
Pickup roller
Pickup
roller
Upper limit detectors
Lift plate
Lift motor
Paper feed
rollers
Separation
rollers
Lift motor
Lift position sensor
Paper size detector