Kyocera Mita DF-75, Service Manual

Page: 26 / 199

2-2
CHAPTER 2 OUTLINE OF OPERATION
1.2 Outline of the Electrical Circuitry
The sequence of finisher operations is controlled by the finisher controller PCB. The fin-
isher controller PCB is a 16-bit microprocessor (CPU), and is also used for combination with
the host machine (serial).
The finisher controller PCB drive motors and other loads in response to the various com-
mands from the host machine. It also communicates such data as on the states of various sen-
sors and switches to the host machine by way of the serial communication line.
The ICs mounted to the finisher controller PCB have the following functions:
Host machine DC
controller PCB
CPU
Punch controller
PCB
Finisher
controller
PCB
IC13
CPU
IC12
EEP-ROM
IC11
Communica-
tion IC
IC6
EP-ROM
IC1
Regulator IC
Motor
Clutch
Switch
Sensor
Motor
Sensor
Finisher unit
Puncher unit (option)
• IC13 (CPU)
Controls sequence of operations.
• IC12 (EEP-ROM)
Backs up adjustment settings.
• IC6 (EP-ROM)
Stores sequence programs.
• IC11 (communication IC)
Communicates with the host machine.
• IC1 (regulator IC)
Generates 5 V.
F02-102-01
F02-102-01 shows the flow of signals between finisher and options controller: