Canon Saddle Finisher-AF2, Service Manual

Page: 60 / 244

Chapter 3
3-2
3.2.2 Finisher Controller PCB
0020-4675
The finisher controller PCB drives the various loads (motors, solenoids) of the machine in response to the commands from the host machine (copier), and indicates
the states of the sensors and switches to the host machine.
It also serves to control the punch unit and the saddle finisher controller PCB.
F-3-3
The machine uses the following ICs, each possessing specific functions:
3.2.3 Saddle Stitcher Controller PCB
0020-4677
The saddle stitcher controller PCB drives the machine's various loads (motors, solenoids) in response to the commands from the finisher controller, and indicates
the states of sensors and switches to the host machine.
F-3-4
The machine uses the following major ICs possessing specific functions:
IC Description
CPU Controls the communications with the host machine; controls ASIC1/ASIC2.
ASIC1 Controls the communications with accessories; controls the drive to various loads.
ASIC2 Controls the drive to various loads.
ROM Stores the firmware used to operate the machine.
EEPROM Stores counter readings and adjustment values.
IC Description
ASIC1 Controls the communications with the finisher controller; controls the drive to various loads.
CPU
ASIC1
ROM
EEPROM
ASIC2
Finisher
controller PCB
Motor,
Solenoid
Switch,
Sensor
Saddle stitcher
controller PCB
Punch unit
(accessory)
To host machine
Saddle stitcher
controller PCB
Motor
Solenoid
Sensor
ASIC1 Finisher
Controller PCB