COPYRIGHT© 2001 CANON INC.
2000 2000 2000 2000
CANON SADDLE FINISHER K3/K4 REV.0 MAR. 2001
2-2
CHAPTER 2 OPERATION OVERVIEW
1.2 Outline of Electrical Circuit
1.2.1 Finisher Assembly
The sequence of operations of the finisher is controlled by the finisher controller PCB,
which is a 16-bit microprocessor (CPU); in addition to controlling the sequence, it commu-
nicates with the host machine in serial.
In response to the various commands from the host machine through the serial communi-
cation line, the finisher controller PCB drives the solenoids and motors. It in turn sends in-
formation about the sensors and the switches to the host machine using the serial communi-
cation line.
The ICs mounted to the finisher controller PCB have the following major functions:
•
IC106 (master CPU):
controls sequence of operations.
•
IC108 (master EEPROM):
backs up adjustment values.
•
IC110 (master EPROM):
stores sequence programs.
backs up initial settings data
•
IC113 (communication IC): communicates with the copier and the saddle stitcher unit
•
IC125 (slave CPU):
controls sequence of operations.
•
IC123 (DPRAM):
controls communication between master CPU and slave
CPU.
F02-102-01 shows the flow of signals between finisher and copier:
F02-102-01
Fuse PCB
Finisher
controller PCB
IC106
Master
CPU
IC108
Master
EEPROM
IC113
Communi
cation IC
IC108
Slave
CPU
IC110
Master
EEPROM
Fan
IC123
DPRAM
Copier main
controller
PCB (CPU)
Finisher unit
Saddle
stitcher
controller
PCB
Saddle
stitcher unit
Punch driver
PCB
Fan
Switch
Motor
Fan
Sensor
Motor
Inserter
drive
PCB
Inserter
Folder
driver
PCB
Folder
Solenoid
Sensor