Controlling The Main Motor (M2) - Canon Image Reader-A1 iR5000i Service Manual

CHAPTER 2 SEQUENCE OF OPERATIONS

1.4 Controlling the Main Motor (M2)

1.4.1 Outline
The functions of the main motor control circuit are as shown in the following table, and
its block diagram is shown in the following figure:
Item
Power supply
drive signal
Operating/driving
Control
Error detection
1. When the main motor drive signal (MMON) goes '1', the main motor starts to rotate.
2. When the main motor rotates, clock pulse signals (MMFG) are generated. If the DC
controller PCB detects an error in clock pulse signals, it will indicate "E010" in the con-
trol panel.
DC power supply
PCB
DC controller
PCB
2-6 P
24V is supplied by the DC controller PCB
from the DC controller PCB (MMON)
Waste toner feedscrew
Cleaning assembly
Registration roller
Manual feed pickup assembly
Left deck feed roller 2
Developing assembly unit
Turning on/off the motor
Controlling the motor to a specific speed
code E010
T02-104-01
J4005
24V
1
GND
2
J108
0V
A8
5V
A7
[1]
MMON
A6
[2]
MMFG
A5
F02-104-01 Control Block Diagram
COPYRIGHT © 2001 CANON INC.
Description
J631
1
2
Drive circuit
J632
1
2
Control circuit
3
4
2000 2000 2000 2000 CANON iR5000i/iR6000i REV.0 JUNE 2001
Main motor
(M2)
Clock pulse
generation
circuit
Reference
signal
generation
circuit