MX-FN30, MX-FN31. Service Manual (Revised February 2017). - Sharp Copying Equipment Service Manual (repair manual). Page 91

MX-FN30/FN31  Technical Explanation 3K Finisher  6 – 35

 Booklet Finisher

Roles of major ICs mounted on this PCB are summarized below.

The saddle stitcher controller PWB drives motors and notifies the host machine of the states of sensors according to the instructions from the finisher
controller PWB.

Roles of major ICs mounted on this PCB are summarized below.

Master CPU(IC12)

 Controls communications between this equipment and host machine.
 Controls communications with the saddle stitcher unit, puncher unit, and other optional units.
 Controls communication with the slave CPU
 Stores the firmware for operating the finisher
 Controls sensors, switches, and motors

Slave CPU(IC42)

 Controls communication with the master CPU
 Stores the firmware for operating the finisher
 Controls sensors, switches, and motors

Motor drivers (IC1 to IC4, IC7, IC8, IC10, 
IC11, IC13, IC15, IC18, IC19, IC21, IC36, 
IC41)

 Controls the driving of motors

CPU (IC12) 

 Controls communication with the finisher controller
 Stores the firmware for operating the finisher
 Controls sensors and motors

Motor Driver  (IC6 - 11) 

 Controls the driving of motors

Finisher

Controller PWB

Motor

Clutch

Fan

Switch

Sensor

Master CPU (IC12)

Motor Driver

Slave CPU (IC42)

Saddle Stitcher

 Controller PCB

Puncher Unit

(option)

Connection

machine

(IC1 to 4,IC7,IC8,

IC10,IC11,IC13,

IC15,IC18,IC19,

IC21,IC36,IC41)

Saddle Stitcher

Controller PWB

CPU (IC12)

Motor Driver

(IC6 to 11)

Sensor

Finisher

Controller PCB

Motor