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MX-FN27, MX-PN14  DISASSEMBLY AND ASSEMBLY  5 – 7

1)

Remove the machine from the host machine.

2)

Remove the Front Cover Unit.

3)

Remove the Rear Cover.

4)

Remove the Delivery Tray.

5)

Remove the Upper Feed Guide Unit.

6)

Remove the Staple-free Staple Unit.

7)

Remove the Tray Guide Cover.

8)

Remove the Processing Tray Unit.

1)

Remove the Delivery Sensor [1].

– 1 Connector [2]

1)

Remove the machine from the host machine.

2)

)Remove the Front Cover Unit.

3)

Remove the Rear Cover.

4)

Remove the Delivery Tray.

5)

Remove the Upper Feed Guide Unit.

6)

Remove the Stapler Unit.

1)

Remove the Upper Stay [1].

– 2  Screws  [2]

2)

Remove the Center Return Belt Guide [1].

– 2 Bosses [2]

3)

Rotate the machine [1] as shown below, and remove the 2 Screws
[2] of the Front/Rear Return Belt Guide.

4)

Return the machine to its original position

5)

Remove the Rear Return Belt Guide [1].

– 1 Boss [2]

6)

Remove the Front Return Belt Guide [1].

– 1 Boss [2]

– 1 Clip [3]

– 1 Bushing [4]

1x

[1]

[2]

[1]

[2]

2x

[1]

[2]

[2]

2x

2x

[2]

[2]

[1]

[1]

[2]

[2]

[1]

[3]

[4]

MX-FN27, MX-PN14  DISASSEMBLY AND ASSEMBLY  5 – 8

7)

)Remove the Return Belt Unit [1].

– 1 Clip [2]

– 1 Bushing [3]

1)

Remove the machine.

2)

Turn this machine and remove the slide unit. 

– 5  Screws  [1]

1)

Remove the screw fixing the Punch Unit Cover.

2)

Remove the screw fixing the Punch Unit. 

3)

Remove the Punch Unit. 

1

Punch unit

[3]

[2]

[1]

5x

[1]

[1]

[1]

[1]

[1]

1

MX-FN27, MX-PN14  OPERATIONAL DESCRIPTION  6 – 1

MX-FN27, MX-PN14

Service Manual

 

The components of this finisher are organized into 3 major blocks; feed unit, processing tray unit and stack tray unit.

Overview of Electrical Circuitry

This machine's sequence of the operation is controlled by the finisher controller PCB.

The finisher controller PCB has the 32-bit CPU(IC1), and the controller also controls the communication with the host machine in addition to control-
ling this machine's operation sequence.

The CPU(IC1) on the finisher controller PCB contains a flash ROM used to store the operating sequence program.

The finisher controller PCB uses the serial communication line to receive various commands from its host to drive the motors. It also uses serial com-
munications to send information on the sensors and switches to its host.

The setting value of the service mode in the finisher is memorized in CPU(IC1).

Stack Tray Unit

Processing Tray Unit

Feed Unit

Motor

Sensor

Switch

Motor Driver

Finisher Controller

PCB

CPU (IC1)

Host machine

(DC Controller PCB)

Serial

communication

MX-FN27, MX-PN14  OPERATIONAL DESCRIPTION  6 – 2

The finisher operates according to the commands that it receives from the host machine and ejects paper to the delivery tray.
There are four paper delivery methods.

– Non-sort stacking

– Shift-sort stacking

– Staple-free staple stacking

Basic operations of this finisher are described below.

1)

The paper delivered from the host machine is fed by the inlet roller and delivery roller.

2)

The paper delivered by the delivery roller is fed toward the processing tray by the paddle. The return belt feeds the paper to the processing tray's
stopper and aligns paper in the feed direction.

3)

The alignment plates are used to align paper in the width direction.(In the illustration below, paper is aligned with reference to the central refer-
ence position.)

Delivery Roller

Inlet Roller

Return Belt

Paddle

Stopper

Rear Alignment Plate

Front Alignment Plate