Service manual

Chapter 2
2-30
F-2-44
2.4 Pickup and Feed System
2.4.1 Overview/Configuration
2.4.1.1 Overview
0007-4988
The pickup/feed system serves to pick up and move paper, and it consists of various feed rollers.
The machine possesses 2 inlet slots for paper (i.e., multifeeder tray and paper feeder) and 2 outlet slots (face-up tray and face-down tray).
The presence/absence of paper is checked by the paper sensor (PS716, for the paper feeder) and by the multifeeder paper sensor (PS718, for the multifeeder tray).
The various feed rollers of the machine are controlled by the DCNT board, which governs 2 motors, 2 clutches, and 2 solenoids.
The paper path is equipped with 3 photointerrupters (PS1, PS711, PS717, PS720), checking to see whether paper has reached or moved past a specific sensor po-
sition.
If paper fails to reach or move past a specific sensor within a specific period of time, the CPU on the DCNT board will identify the condition as being a jam, and
communicate the fact to the SCNT board.
The following is a diagram showing how the machine's motors, solenoids, and sensors are arranged:
DCNT Board
H.V.T
TR2S
Secondary
transfer roller
Main motor
Roller
engaging
clutch
Roller engaging
detection gear
Roller
engaging
sensor
Engaging cam
Engaging lever
ICLRSNS
/TR2CLD
PS714
DCM
701
CL2