Various Control; Controlling The Scanner Drive System; Outline; Controlling The Reader Motor - Canon iR3570 Service Manual

Chapter 5
Stream reading
start position
1.CIS position check
2.Original scan
F-5-9

5.3 Various Control

5.3.1 Controlling the Scanner Drive System

5.3.1.1 Outline

iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / 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 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /
The reader motor driver turns on/off the reader motor and controls the direction/speed of its rotation according to the signals from the CPU.
5-6
CIS HP
sensor
Original glass
read start position HP
*1
*1
*1:Only if 1 min or more has passed since previous rotation
Reader motor
[1]
Sensor
light-blocking
plate
reverse
Guide shaft
Shading
position
Carriage drive belt
forward
Cartridge
Contact image
sensor CIS
0006-5722
0006-5723