Various Control Mechanisms; Controlling The Scanner Drive System; Overview; Reader Motor Control - Canon iR C3380 series Service Manual

Chapter 5

5.3 Various Control Mechanisms

5.3.1 Controlling the Scanner Drive System

5.3.1.1 Overview

/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
The following components are associated with the scanner drive system:
copyboard cover
open/closed sensor
(PS502)
[1] Reader Motor (M501) Drive Signal
used to turn on/off the motor and change its direction/speed of rotation.
[2] Contact Image Sensor (CIS) Home Position sennsaor (PS501) Detection Signal
used to indicate that the contact image sensor (CIS) is in home position,
[3] Copyboard Cover Sensor (front, PS502; rear, PS503) Detection Sugnal
used to indicate the state (open/closed) of the copyboard cover.

5.3.1.2 Reader Motor Control

/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
The reader motor driver turns on/off the reader motor and controls its direction/speed of rotation.
MEMO:
The machine uses any of the following scan speeds according to selected mode:
Function
Copy
SEND
5-6
Reader control PCB
Copyboard cover
open/closed sensor
(PS503)
[3]
[2]
CIS HP sensor
Reader control PCB
3.3V
OPT_MCK
CCW
MD_POW
CPU
M_ENABLE
RETURN
M_VREF
Mode
full color mode
black-and-white mode
full-color mode (originals other than of 300 dpi or lower; 320x450m 12"x18")
Reader motor
[1]
Sensor
light-blocking
plate
(reverse)
Guide shaft
F-5-10
+5V +24V
J505
Motor
driver
F-5-11
T-5-5
Carriage drive belt
(reverse)
Carriage
Contact image
sensor (CIS
B*
1
B
2
A M501
3
A*
4
Scan speed
118 mm/sec
118 mm/sec
236 mm/sec
0013-8578
0013-8579