Various Control - Canon iR4570 Series Service Manual

Chapter 5

5.3 Various Control

5.3.1 Controlling the Scanner Drive System
5.3.1.1 Outline
iR2270 / iR2870 / iR3570 / iR4570 / iR3530
The machine's scanner system consists of the following components:
Reader controller PCB
Copyboard cover
open/closed sensor
(PS501)
[3]
[2]
Copyboard cover
open/closed sensor
(PS502)
CIS HP sensor (PS503)
F-5-10
[1] Reader Motor (M501) Drive Signal
turns on/off the motor, and controls its direction/speed of rotation.
[2] Contact Image Sensor (CIS) HP Sensor (PS503) Detection Signal
checks if the contact image sensor (CIS) is at home position.
[3] Copyboard Cover Sensor (front, PS502; rear, PS501) Detection Signal
detects the state (open/close) of the copyboard cover.
5.3.1.2 Controlling the Reader Motor
iR2270 / iR2870 / iR3570 / iR4570 / iR3530
5-10
Reader motor
[1]
Sensor
light-blocking
plate
reverse
Guide shaft
Carriage drive belt
forward
Cartridge
Contact image
sensor CIS
0006-5722
0006-5723