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I.

BASIC OPERATION .................... 3-1

A. Outline ...................................... 3-1
B. Electrical Circuitry .................... 3-2
C. Inputs to and Outputs from the

Saddle Stitch Controller PCB ... 3-3

II.

FEEDING/DRIVE SYSTEM ......... 3-8

A. Outline ...................................... 3-8

III. PAPER OUTPUT

MECHANISM............................. 3-14

A. Outline .................................... 3-14
B. Controlling the Inlet

Flappers ................................. 3-17

C. Controlling the Movement of

Sheets .................................... 3-21

D. Aligning the Sheets ................ 3-23
E. Controlling the Phase of the

Crescent Roller ...................... 3-26

IV. STITCHING SYSTEM ............... 3-28

V.

FOLDING/DELIVERY
SYSTEM .................................... 3-31

VI. CHECKING FOR A JAM ........... 3-38
VII. POWER SUPPLY ...................... 3-43

I.

BASIC OPERATION .................... 4-1

A. Outline ...................................... 4-1
B. Inputs to and Outputs from

Punch Driver PCB .................... 4-2

II.

PUNCH OPERATION .................. 4-5

A. Outline ...................................... 4-5
B. PUNCH OPERATION ............... 4-7
C. Horizontal Registration

Operation ............................... 4-11

III. POWER SUPPLY SYSTEM....... 4-14

I.

FINISHER UNIT .......................... 5-1

A. Externals and Controls ............. 5-1
B. FEEDING SYSTEM ................. 5-9
C. PCBs ...................................... 5-15

II.

SADDLE STITCH UNIT ............. 5-16

A. Externals and Controls ........... 5-16
B. SADDLE UNIT ....................... 5-19
C. PCBs ...................................... 5-29
D. Accessory .............................. 5-30

III. PUNCHER UNIT (OPTION) ...... 5-31

A. Externals and Controls ........... 5-31
B. Puncher Driver System .......... 5-32
C. PCBs ...................................... 5-43

I.

PERIODICALLY REPLACED
PARTS ......................................... 6-1

A. Finisher Unit ............................. 6-1
B. Saddle Stitch Unit .................... 6-1
C. Puncher Unit (option) ............... 6-1

II.

CONSUMABLES AND
DURABLES ................................. 6-2

A. Finisher Unit ............................. 6-2

III. Consumable parts replacement

procedures .................................. 6-3

A. Paddle replacement ................. 6-3
B. Knurled belt replacement ......... 6-4

IV. PERIODICAL SERVICING ........ 6-10

I.

ADJUSTMENTS .......................... 7-1

A. Electrical System

(finisher unit) ............................ 7-1

B. Electrical System

(saddle stitch unit) .................... 7-5

C. Electrical System

(puncher unit (option)) .............. 7-7

II.

ARRANGEMENT OF
ELECTRICAL PARTS .................. 7-9

A. Finisher Unit ............................. 7-9
B. Saddle Stitch Unit .................. 7-16
C. Puncher Unit (option) ............. 7-22
D. Light-Emitting Diodes (LED)

and Check Pins by PCB ......... 7-26

III. TROUBLESHOOTING ............... 7-28

A. Finisher Unit ........................... 7-28
B. Saddle Stitch Unit .................. 7-38
C. Puncher Unit (option) ............. 7-45

A.

FINISHER UNIT GENERAL
TIMING CHART .......................... A-1

B.

SADDLE STITCH UNIT
GENERAL TIMING CHART ........ A-2

C. PUNCHER UNIT (option)

GENERAL TIMING CHART ........ A-3

D.

SIGNAL AND
ABBREVIATIONS ....................... A-4

E.

ACTUAL WIRING CHART .......... A-6

F.

SOLVENTS AND OILS ............. A-13

I.

FEATURES .................................. 1-1

II.

SPECIFICATIONS ....................... 1-2

A. Finisher specifications

(MX-FN15/FN16) ....................... 1-2

B. Punch unit specifications

(AR-PN4) ................................... 1-8

C.

Engine specification

(MX-FN15/FN16/AR-PN4) ......... 1-9

D. Cross Section .......................... 1-11

III. Using the Machine ..................... 1-14

A. Removing Paper Jams from the

Finisher Unit ............................. 1-14

B. Supplying the Finisher Unit with

Staples ..................................... 1-15

C. Removing Staple Jams from the

Finisher Unit ............................. 1-17

D. Removing Paper Jams from the

Saddle Stitch Unit
(Saddle Finisher) ..................... 1-18

E. Supplying the Saddle Stitch

Unit with Staples
(Saddle Finisher) ..................... 1-20

F. Removing Staple Jams from the

Saddle Stitch Unit
(Saddle Finisher) ..................... 1-21

G. Removing Paper Jams from the

Puncher Unit (option) ............... 1-23

H. Removing Punched Scrap from

the Puncher Unit (option) ......... 1-25

IV. MAINTENANCE BY THE

USER ........................................ 1-26

A. Maintenance by the User ......... 1-26

• Normally, the finisher holds a stack of sheets 250 mm in height in its two bins (small-size

paper: equivalent to 2000 sheets)/140 mm in height (large-size paper: equivalent to 1000
sheets)

• The finisher is capable of handling papers between 56 and 256 gm/m².

• The finisher has a job offset function for sorting non-stapled stacks of copies.

• The finisher offers a choice of four stapling modes (1-point stapling at rear, diagonal sta-

pling at front, diagonal stapling at rear, 2-point stapling).

• The use of a buffer roller enables the finisher to accept copies without interruption from

the host machine even during stapling or offset operation.

• The finisher can staple along the center of paper and fold it in two (up to 15 sheets).

• The use of the puncher unit enables the finisher to punch sheets for binders before they are

output. (The puncher unit is capable of handling papers between 56 and 256 gm/m². It can-
not handle special paper, postcards and transparencies.)

• Enable the use of special type of paper and printed paper in addition to the staple sorting or

the hole punching mode (Available when the optional staple sorting and the hole punching
mode units are installed.) This paper is not run through fuser (heat).

ITEM

MODEL

NOTE

Finisher

MX-FN15
MX-FN16

Saddle stitch finisher

Punch unit

AR-PN4A

2 holes (

6.5)

Europe

AR-PN4B

2 holes/3 holes automatic selection(

8.0)

North America

AR-PN4C

4 holes (

6.5) (80mm pitch)

France

AR-PN4D

4 holes (

6.5) (70, 21mm pitch)

Sweden

Stapler for Finisher

5000 staples

Staple cartridge

x3

5000 x 3

SF-SC11

20

Cartridge for MX-FN15/FN16

Common with S55,S55N,FN8/9

Stapler for Saddle 

Stitch 2000 staples

Staple cartridge

x3

2000 x 3

AR-SC3

40

For MX-FN16 (Saddle Stitch Finisher)

Common with FN9