Electrical Circuitry - Canon FINISHER-C1 Service Manual

CHAPTER 3 SADDLE STITCHER UNIT BASIC OPERATION
B.

Electrical Circuitry

The sequence of operations used for the saddle stitcher is controlled by the saddle stitcher
controller PCB. The saddle stitcher controller PCB has a microprocessor, and is used to control the
sequence of operations and to handle serial communications with the finisher controller PCB, driv-
ing solenoids and motors in response to the various commands from the finisher controller PCB.
The saddle stitcher controller PCB is also used to communicate the state of various sensors and
switches to the finisher controller PCB in serial.
The functions of the major ICs mounted on the saddle stitcher controller PCB are as follows:
Q1
Controls the sequence of operations.
Q2
Contains the sequence program.
Q3
Controls the sequence of operations.
Q4
Handles IPC communications.
Sensor
Switch
3-2 COPYRIGHT © 1998 CANON INC.
Saddle stitcher
controller PCB
Q1 CPU
Q2
ROM
Q3
RAM
Q4
Communications IC
Finisher controller PCB
Figure 3-102
FINISHER-C1/SADDLE FINISHER-C2 REV. 0 DEC. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Motor
Solenoid
Motor
Copier