Operational Description; Basic Operations - Sharp AR-FN7 Service Manual

[4] OPERATIONAL DESCRIPTION

1. Basic Operations

A. Specifications
The finisher serves to deliver sheets coming from its host machine. The
mode of delivery may be non-sort stack, job offset*, or staple delivery.
The saddle unit built into the finisher is used to fold a stack of sheets
coming from the finisher unit in half for delivery.
All these operations are controlled by various commands sent by the
host machine in addition to the commands from the finisher controller
PCB.
The puncher unit (option) is designed for installation to the pickup
assembly of the finisher, and is used to punch holes in sheets coming
from the host machine.
The above operations are controlled with various commands from the
finisher controller PCB as well as the commands from the punch
controller PCB.
Fig.F02-101-01
NOTE:The position of delivery is shifted to the front/rear for each stack to
assist sorting.
B. 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 communication 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.
F02-102-01 shows the flow of signals between finisher and options
controller:
Puncher unit drive
system (puncher unit;
option)
Alignment drive system
Stapler drive system
Delivery drive system
Feed drive system
Tray drive system
Saddle unit
drive system
AR-FN7/PN1 OPERATIONAL DESCRIPTION 4-1
Finisher unit
Finisher
controller
PCB
Motor
IC13
CPU
Clutch
IC12
Switch
EEP-ROM
Sensor
IC11
Communica-
Puncher unit (option)
tion IC
IC6
Punch controller
EP-ROM
PCB
IC1
Regulator IC
Motor
Fig.F02-102-01
Host machine DC
controller PCB
CPU
Sensor