Canon iR2200 Service Manual page 165

1.4 Controlling the Main Motor (M2)
1.4.1 Outline
The functions of the main motor control circuit are as shown in T02-104-01; for a block
diagram of the circuit, see F02-104-01.
Item
Power supply
Drive signal
Operation/drive assembly
Control
Error detection
[1] When the main motor drive signal (MM_ON) goes '1', the main motor starts to rotate.
[2] When the main motor starts to rotate, the clock pulse signal (MM_LOCK=1) is gener-
ated. If the DC controller PCB detects a fault in the clock pulse signal, the machine will
indicate 'E010' in its control panel.
Main power
supply PCB
DC controller
PCB
COPYRIGHT © 2001 CANON INC.
Description
24 V from the DC power supply PCB.
Signal (MM_ON) from the DC controller PCB.
Waste toner feed screw
Cleaner assembly
Registration roller
Manual pickup assembly
Left deck feeding roller 2
Developing unit
ON/OFF control
Constant speed control
'E010' (error code)
T02-104-01
J202
24VU1-SW
1
0VU1
2
J308
MM_LOCK
A10
MM_ON
A9
GND
A8
+5V
A7
F02-104-01 Control Circuit Block Diagram
2000 2000 2000 2000 CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001
CHAPTER 2 SEQUENCE OF OPERATIONS
J3088
1
2 Drive circuit
J3086
1
Control
2
circuit
3
4
Main motor
(M1)
Clock pulse
generation
circuit
Reference
signal gene-
ration circuit
2-5 P