Overview Of Electrical Circuit - Canon SADDLE FINISHER K3 Service Manual

CHAPTER 2 OPERATION OVERVIEW

12.1.2 Overview of electrical circuit

The saddle stitcher sequence is controlled by the saddle stitcher controller PCB. A micro-
computer is used for the saddle stitcher controller PCB, and serial communication takes
place between the programmable controller and the finisher controller PCB.
The saddle stitcher controller PCB drives the solenoid and motor according to commands
sent from the finisher controller PCB.
The saddle stitcher controller PCB communicates information concerning the sensors and
switches to the finisher controller PCB by serial communication.
The roles of the main ICs mounted on the saddle stitcher controller are as follows.
• Q1
Sequence control
• Q2
Built-in sequence programme
• Q3
Sequence control
• Q4
IPC communication
Electrical circuit block diagram
Sensors
Switches
2-96
COPYRIGHT© 2001 CANON INC.
Saddle stitcher
controller PCB
Q1 CPU
Q2
ROM
Q3
RAM
Q4
communication IC
Finisher
controller PCB
F02-1201-02
2000 2000 2000 2000
Solenoids
Copier
CANON SADDLE FINISHER K3/K4 REV.0 MAR. 2001
Motors
LED