Outline Of The Electrical System - Canon STAPLER STACKER SS-72 Service Manual

CHAPTER 2
B. Outline of the Electrical System
The operation sequences of the stapler stacker are controlled by the stapler stacker driver PCB.
The stapler stacker driver PCB contains 2 microcomputers (main-CPU, sub-CPU) which control
the sequences and the serial communication with the option controller PCB.
The stapler stacker driver drives the solenoids and motors according to the various com-
mands sent from the option controller through the serial line. The stapler stacker driver also
reports the information of the sensors and switches to the option controller through the serial
line.
The main functions of the ICs installed on the stapler stacker driver are listed below.
• IC14/IC15 (main-CPU, sub-CPU)
Sequence control
• IC23 (EEP-ROM)
Initial data backup
Figure 2-1-2 shows the flow of signals between the stapler stacker and option controller.
Option controlle
PCB
Paper deck
driver PCB
2 - 2
Stapler stacker driver PCB
IC23
EEP-ROM
IC14
IC15
r
Main-CPU Sub-CPU
Figure 2-1-2
Motors
Solenoids
Switches
Sensors
Power supply