MX-FN21, MX-FN22 (serv.man4). Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 13

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TECHNICALDESCRIPTIONS>BasicComposition

TECHNICALDESCRIPTIONS>BasicComposition

Outlineofelectricalcircuits

TheoperationsequenceofthismachineiscontrolledbythefinishercontrollerPWB,which
uses the 16bit CPU for sequence control. It also performs communication between the
machinebodyandtheoptionalpunchunit.
TheCPUonthefinishercontrollerPWBisprovidedwithaROMwhichstorestheoperation
sequenceprogram.
The finisher controller PWB drives the motors, the clutches and the solenoids according
to the various commands sent from the machine body via the communication cable. In
addition, it notifies information on the sensors and switches to the machine body via the
communicationcable.

Finisher

Finisher
controller PWB

Motor

Fan

Clutch

Solenoid

Sensor

Switch

Punch unit
controller PWB

(OP)

CPU

Motor

driver

Inserter
controller PWB

GBC punch
controller PWB

Decurler
controller PWB

Paper folding unit
controller PWB

•

F-2-3

F-2-3

Saddlefinisher

(OP)

CPU

CPU

Finisher
controller PWB

Motor

Motor

Fan

Clutch

Solenoid

Sensor

Solenoid

Sensor

Switch

Punch unit
controller PWB

Inner trimmer
controller PWB

Inserter
controller PWB

GBC punch
controller PWB

Decurler
controller PWB

Paper folding unit
controller PWB

Motor
driver

Motor
driver

Saddle stitcher
controller PWB

(OP)

•