Panasonic Workio DP-C305, Service Manual

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762
DP-C405/C305/C265
FEB 2008 Ver. 1.1
12.1.2.1.2. Outline of the Electrical Circuitry
The sequence of finisher operations is controlled by the Finisher Controller PCB. The Finisher 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 commands from the
Host Machine. It also communicates such data as on the states of various sensors, 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:
• 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.
Fig. 2-001 shows the flow of signals between finisher, and options controller.
Fig. 2-002
Motor
IC13
CPU
IC12
EEP-ROM
IC6
EP-ROM
IC1
Regulator IC
IC11
Communication
IC
Clutch
Switch
Sensor
Finisher Unit
Finisher
Controller
PCB
Sensor
Motor
Punch Controller
PCB
Punch Unit (Option)
Host Machine DC
Controller PCB
PCU