Controlling The Horizontal Registration Motor (M15) - Canon ImageRunner iR8500 Series Service Manual

The position of paper is detected with reference to the start position and by finding out the difference between the start position and the actual paper position
from the number of drive pulses (1 pulse = about 0.16 mm) of the motor.
Duplexing reversal
motor (M11)
Lower feeding middle
clutch (CL16)
Lower feeding rear
clutch (CL17)
Post-confluence
sensor (PS15)
Horizontal registration
motor (M15)
Horizontal registration
sensor (PS18)
Start position + 2 mm

9.8.12 Controlling the Horizontal Registration Motor (M15)

iR105i/iR105+ / iR9070 / iR85+ / iR8070
Table shows the functions of the reversal motor control circuit, and the Figure is a block diagram of the circuit.
Item
Power supply
Drive signal
Operating/drive
assembly
Control
Error detection
Main power switch ON
Start position
detection
Home position
Start position
: moves to the rear.
: moves to the front.
Description
24 V is supplied by the no-stacking feeding driver PCB.
Signal (SREGI_HOLD) from the DC controller PCB.
See Figure.
ON/OFF control
Rotation control
Stop position retention
Error code "E051"
Paper position detection
Paper about 10 mm from the
registration sensor.
Paper position detection
F-9-81
T-9-36
Chapter 9
0007-0541
9-53