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MX-FN23  DISASSEMBLY AND ASSEMBLY  8 – 1

1) Remove the hand screw from the finisher connection connec-

tor on the side of the machine, and remove the machine con-
nection harness from the finisher.

2) Open the front cover. Remove the resin clip, and remove the

front cover.

3) Remove the screw, and remove the left cabinet of the

machine.

4)

Open the front cabinet of the machine.

5)

Remove the screw, and remove the front cabinet lower and the
connection cabinet.

6)

Release the lock with the separation lever, and slide the fin-
isher to the left.

7)

Remove the connection plate, and slide the finisher toward
you.

8)

Remove the finisher.

MX-FN23  DISASSEMBLY AND ASSEMBLY  8 – 2

1) Remove the screw, and remove the main PWB cover.

1) Remove the screw, and remove the separation lever. Remove

the screw, and remove the front cabinet.

1) Remove the screw, and remove the rear cabinet.

1) Remove the screw, and remove the paper entry paper guide

unit.

1)

Remove the screw, and remove the upper paper guide.

1)

Open the front cover.

2)

Turn the separation lever to the left to separate the finisher
from the machine.

3)

Pull the lever of the staple case to remove the staple case.

NOTE: When installing the staple case, push it until it locks.

MX-FN23  DISASSEMBLY AND ASSEMBLY  8 – 3

4) Remove the staple cartridge.
NOTE: When installing the staple cartridge, push it until it locks.
NOTE: If there is any staple remaining in the staple cartridge, the

cartridge cannot be removed.

1) Remove the main PWB cover.
2) Disconnect the connector, remove the screw, and remove the

staple motor.

1) Remove the front cabinet.
2) Disconnect the connector, remove the screw, and remove the

paper gate solenoid mounting plate unit.

3) Remove the screw, and remove the paper gate solenoid.

NOTE: After fixing the paper gate solenoid, the plunger must be in

contact with the molt (F/R) of the paper entry lower PG in
the free state. 
Press the plunger with your finger to check to confirm that it
is in contact with the molt (F/R) of the paper entry upper
PG.

1)

Disconnect the connector, remove the screw, and remove the
safety switch.

1)

Remove the paper entry paper guide unit.

2)

Remove the upper paper guide.

3)

Remove the screw, remove the mounting plate, and discon-
nect the connector. Remove the screw, and remove the paper
entry detector.

MX-FN23  DISASSEMBLY AND ASSEMBLY  8 – 4

1) Disconnect the connector, remove the screw, and remove the

upper stay right unit.

2) Remove the screw, and remove the ST paper entry paper

guide lower.

3) Remove the paper rear edge detector, and disconnect the con-

nector.

1)

Disconnect the connector, remove the screw, and remove the
harness holder.

2)

Disconnect the connector, remove the screw, and remove the
paper transport motor.

1)

Remove the E-ring, the pulley, the belt, and the parallel pin.

2)

Disconnect the connector, remove the screw, and remove the
take-up solenoid mounting plate unit.