Controlling The Pickup Motor (M2) - Canon ImageRunner iR8500 Series Service Manual

Chapter 9

9.1.8 Controlling the Pickup Motor (M2)

iR105i/iR105+ / iR9070 / iR85+ / iR8070
Table shows the functions of the pickup motor control circuit, and Figure is a block diagram of the circuit.
Item
Power supply
Drive signal
Operating/driving assembly
Control
Error detection
J1721
11
Relay
12
PCB
J513
A5
A4
DC controller
A3
PCB
A2
A1
F-9-6
9-8
Index paper attachment
Fixing sheet
J621
38V
1
GND
Drive circuit
2
J622
0V
1
5V
2
M2_ON
3
M2_FG
4
0V
5
When the M2 drive signal goes '1',
the pickup motor starts to rotate.
When the pickup motor starts to
rotate, the pulse signal goes '1'.
When the pulse signals goes '0',
error code "E015" is indicated.
Backing
F-9-5
T-9-5
Description
Supplies 38 V from the relay PCB.
Signal (M2-ON) from the DC controller PCB.
See Figure.
On/off control
Constant speed control
Error code "E015"
Pickup motor
(M2)
Clock pulse
generation
circuit
Control
Reference
circuit
signal
generation
circuit
Index sheets
0007-0204