Konica Minolta FS-108, FS-108B User Manual

SERVICE MANUAL

MODELS

FS-108/108B

Finisher Units

(With Parts Catalog/Including PI-108)

JANUARY 2002

CSM - FS108

Blank page.

FS-108/108B

SERVICE MANUAL

JANUARY 2002

IMPORTANT NOTICE

Because of the possible hazards to an inexperienced
person servicing this equipment, as well as the risk of
damage to the equipment, Konica Business Technolo­gies strongly recommends that all servicing be per­formed by Konica-trained service technicians only.

Changes may have been made to this equipment to
improve its performance after this service manual was
printed. Accordingly, Konica Business Technologies,
Inc., makes no representations or warranties, either
expressed or implied, that the information contained in
this service manual is complete or accurate. It is under­stood that the user of this manual must assume all risks
or personal injury and/or damage to the equipment while
servicing the equipment for which this service manual
is intended.

Corporate Publications Department

© 1999, KONICA BUSINESS TECHNOLOGIES, INC.

All rights reserved.

Printed in U.S.A.

CONTENTS

FS-108/108B

FS-108/108B

SAFETY PRECAUTIONS.......................................v

PRODUCT SPECIFICA TIONS .........................

CENTER CROSS SECTION .........................FS-3

DRIVE SYSTEM DIAGRAM...........................FS-4

Paper Conveyance Drive ......................... FS-4

Stacker Drive............................................FS-5

Folding Drive (FS-108BM only) ............... FS-5

PAPER CONVEYANCE PATH ....................... FS-6

Paper Conveyance Path .......................... FS-6

Non-Sort Mode ......................................... FS-7

Sort,Group Mode......................................FS-8

Subtray Mode ........................................... FS-9

Staple Mode ........................................... FS-10

Booklet Mode (FS-108BM only).............FS-12

EXTERNAL SECTION ................................. FS-13

Composition(FS-108/FS-108BM) .......... FS-13

Disassembly and Reassembly ............. FS-13

CONVEY ANCE SECTION ........................... FS-18

Composition ........................................... FS-18

Mechanisms ........................................... FS-19

Disassembly and Reassembly .............. FS-22

M1 (FNS Conveyance) Control..............FS-28

Gate Control ........................................... FS-30

M13 (Stacker Entrance) Control ............ FS-33

M5 (Alignment Plate/Upper ) Control.......

M15 (Alignment Plate/Lower)

(FS-108BM only)
M2 (Roller Shift)
M7 (Paper Exit Roller)
SD4 (Paper Exit Opening)
M8 (Paper Exit Opening)

STAPLER UNIT............................................FS-44

Composition ........................................... FS-44

Mechanism ............................................. FS-45

Disassembly and Reassembly .............. FS-49

Stapler Control ....................................... FS-52

MAIN TRAY SECTION................................. FS-55

Composition ........................................... FS-55

Mechanism ............................................. FS-55

Disassembly and Reassembly .............. FS-55

Main Tray Up/Down Control................... FS-58

FOLDING UNIT (FS-108BM ONLY) ............ FS-60

Composition ........................................... FS-60

Mechanism ............................................. FS-61

Disassembly and Reassembly .............. FS-62

Folding Unit Control ............................... FS-64

FS-108/FS-108BM ADJUSTMENTS ........... FS-66

Adjusting the Magnets on Conveyance

Guide Plate B ................................. FS-66

Adjusting the Magnets on Conveyance

Guide Plate C ................................. FS-67

Adjusting the Subtray Paper Exit Guide... FS-68
Adjusting the Paper Path Switching

Guide .............................................. FS-69

Adjusting the Bypass Guide................... FS-70

Control .........................

Control

............................

Control ...............

Control.........

Control...........

FS-35

FS-36
FS-38
FS-39
FS-41
FS-43

FS-1

Adjusting the Shift Position.................... FS-72

Adjusting Opening/Closing at the Paper

Exit.................................................. FS-73

Adjusting the Paper Exit Opening

Solenoid ......................................... FS-74

Adjusting the Paper Exit Opening Lower

Guide Plate..................................... FS-75

Adjusting the Tension Of the Stacker

Paper exit Belt ................................ FS-76

Adjusting the Mount Location Of the

Upper Alignment Plates ................. FS-76

Adjusting the Tension of the Upper Alignment

Plates Drive Timing Belt................. FS-77

Adjusting Mount Location of the Lower Align-

ment Plates (FS-108BM only)........FS-78

Adjusting the Tension of the Lower Alignment

Plate Drive Timing Belt ................... FS-79

Adjusting the Stapling Position

(Flat Stapling)................................. FS-79

Adjusting the Stapler Vertical Positioning.. FS-80
Adjusting the Staple Orientation (Stapling and

Folding) (FS-108BM only)..............FS-82

Adjusting the Staple Position (Stapling and

Folding) (FS-108BM only)..............FS-83

Adjusting the Angle Of The Folding Stopper

(FS-108BM only) ............................ FS-84

Adjusting the Folding Stopper Positions

(FS-108BM only) ............................ FS-85

Adjusting the Tension of the Stapler-Movement

Timing Belt ...................................... FS-86

Adjusting the Tension of the Stapler Rotation

Timing Belt ...................................... FS-86

Adjusting the Folding Force

(FS-108BM only) ............................ FS-87

DIAGRAMS

FS-108/FS-108BM ELECTRICAL PARTS

LAYOUT DRAWING ....................... FS-89

FS-108/FS-108BM CONNECTOR LAYOUT

DRAWING ...................................... FS-92

FS-108/FS-108BM OVERALL WIRING

DIAGRAM (1/3)............................... FS-95

FS-108/FS-108BM OVERALL WIRING

DIAGRAM (2/3)............................... FS-96

FS-108/FS-108BM OVERALL WIRING

DIAGRAM (3/3)............................... FS-97

FS-108/FS-108BM Timing Chart (Sort Mode,

8.5x11, 2-Page Original, 5 COPIES, 1:1

RATIO) ............................................ FS-98

FS-108/FS-108BM Timing Chart (2 Staple Mode,

8.5x11, 2-Page Original, 3 Copies,

1:1 RATIO) ...................................... FS-99

FS-108/FS-108BM Timing Chart (stapling and

folding, 8.5x11R, 3-Page Original, 2 Copies,

1:1 RATIO, 1-1 mode)................... FS-100

iii

Blank page.

SAFETY PRECAUTIONS

Installation Environment

Safety considerations usually are directed toward
machine design and the possibility of human error. In
addition, the environment in which a machine is oper­ated must not be overlooked as a potential safety
hazard.

Most electrical equipment is safe when installed in a
normal environment. However, if the environment is
different from what most people consider to be nor­mal, it is conceivable that the combination of the
machine and the room air could present a hazardous
combination. This is because heat (such as from
fusing units) and electrical arcs (which can occur
inside switches) have the ability to ignite flammable
substances, including air.

When installing a machine, check to see if there
is anything nearby which suggests that a poten­tial hazard might exist. For example, a laboratory

might use organic compounds which, when they
evaporate, make the room air volatile. Potentially dan­gerous conditions might be seen or smelled. The

presence of substances such as cleaners, paint thin­ners, gasoline, alcohol, solvents, explosives, or simi­lar items should be cause for concern.

If conditions such as these exist, take appropriate
action, such as one of the following suggestions.

effect may be caused by altering any aspect of the
machine’s design. Such changes have the potential
of degrading product performance and reducing
safety margins.

For these reasons, installation of any modification not

specifically authorized by Konica Business Machines
U.S.A., Inc., is strictly prohibited.

The following list of prohibited actions is not all-inclu­sive, but demonstrates the intent of this policy.

• Using an extension cord or any unauthorized
power cord adapter.

• Installing any fuse whose rating and physical size
differs from that originally installed.

• Using wire, paper clips, solder, etc., to replace or
eliminate any fuse (including temperature fuses).

• Removing (except for replacement) any air filter.

• Defeating the operation of relays by any means

(such as wedging paper between contacts).

• Causing the machine to operate in a fashion other
than as it was designed.

• Making any change which might have a chance
of defeating built-in safety features.

• Using any unspecified replacement parts.

• Determine that the environment is controlled

(such as through the use of an exhaust hood) so
that an offending substance or its fumes cannot
reach the machine.

• Remove the offending substance.

• Install the machine in a different location.

The specific remedy will vary from site to site, but the
principles remain the same. To avoid the risk of injury
or damage, be alert for changes in the environment
when performing subsequent service on any ma­chine, and take appropriate action.

Unauthorized Modifications

Konica copiers have gained a reputation for being
reliable products. This has been attained by a combi­nation of outstanding design and a knowledgeable
service force.

The design of the copier is extremely important. It is
the design process that determines tolerances and
safety margins for mechanical, electrical, and elec­tronic aspects. It is not reasonable to expect individu­als not involved in product engineering to know what

General Safety Guidelines

This copier has been examined in accordance with
the laws pertaining to various product safety regula­tions prior to leaving the manufacturing facility to
protect the operators and service personnel from
injury. However, as with any operating device, compo­nents will break down through the wear-and-tear of
everyday use, as will additional safety discrepancies
be discovered. For this reason, it is important that the
technician periodically performs safety checks on the
copier to maintain optimum reliability and safety.

The following checks, not all-inclusive, should be
made during each service call:

CAUTION: Avoid injury. Ensure that the copier is
disconnected from its power source before continu­ing.

• Look for sharp edges, burrs, and damage on all
external covers and copier frame.

• Inspect all cover hinges for wear (loose or bro­ken).

• Inspect cables for wear, frays, or pinched areas.

v

• Ensure that the power cord insulation is not dam­aged (no exposed electrical conductors).

• Ensure that the power cord is properly mounted
to the frame by cord clamps.

• Check the continuity from the round lug (GND) of
the power cord to the frame of the copier -- ensure
continuity. An improperly grounded machine can
cause an electrically-charged machine frame.

Applying Isopropyl Alcohol

Care should be exercised when using isopropyl alco­hol, due to its flammability. When using alcohol to
clean parts, observe the following precautions:

• Remove power from the equipment.

• Use alcohol in small quantities to avoid spillage

or puddling. Any spillage should be cleaned up
with rags and disposed of properly.

Safeguards During Service Calls

Confirm that all screws, parts, and wiring which are
removed during maintenance are installed in their
original positions.

• When disconnecting connectors, do not pull the
wiring, particularly on AC line wiring and high
voltage parts.

• Do not route the power cord where it is likely to
be stepped on or crushed.

• Carefully remove all toner and dirt adhering to any
electrical units or electrodes.

• After part replacement or repair work, route the
wiring in such a way that it does not contact any
burrs or sharp edges.

• Do not make any adjustments outside of the
specified range.

• Be sure that there is adequate ventilation.

• Allow a surface which has been in contact with

alcohol to dry for a few minutes to ensure that the
alcohol has evaporated completely before apply­ing power or installing covers.

Summary

It is the responsibility of every technician to use pro­fessional skills when servicing Konica products. There
are no short cuts to high-quality service. Each copier
must be thoroughly inspected with respect to safety
considerations as part of every routine service call.
The operability of the copier, and more importantly,
the safety of those who operate or service the copier,
are directly dependent upon the conscientious effort
of each and every technician.

Remember...when performing service calls, use good
judgement (have a watchful eye) to identify safety
hazards or potential safety hazards that may be pre­sent, and correct these problem areas as they are
identified -- the safety of those who operate the copier
as well as those who service the copier depend on it!

vi

PRODUCT SPECIFICATIONS

Amount of Curll

Copy paper (5 sheets)

Fold height

Original Pages

A3R, 11x17R

0 to 5

11 to 16

6 to 10

25mm or less

Not specified*

50mm or less

A4R, 8.5x11R
25mm or less

Not specified*

B4, 8.5x14R
25mm or less
50mm or less

Not specified*

Not specified*

Type

FS-108: Finishing device implementing offset colla-

tion, stapling, and subtray eject

FS-108B: Finishing device implementing offset colla-

tion, stapling, subtray eject, stapling and
folding, and folding

Functions

Type of Paper: Same as for the main body.
Paper Size: 11x17R, 8.5x11R, 8.5x11R, 8.5x11,

8.5x5.5R, 8.5x5.5, 5.5x8.5R.

8.5x5.5R, 5.5x8.5R are not possible in
staple mode. 8.5x1 1, 8.5x5.5R, 8.5x5.5,

5.5x8.5R, 5.5x8.5 are not available in
booklet mode.

Paper Stacking Capacity:
Subtray exit mode:

Maximum 200 sheets (same size sheets
only)

Non-Staple, Group, and Offset modes:

Maximum 1500 sheets (11x17R, 8.5x14R)
Maximum 3000 sheets (8.5x5.5R, 8.5x5.5,

8.5x11R, 8.5x11)
Maximum 500 sheets (5.5x8.5R, 5.5x8.5)

Staple Mode: Maximum 1000 sheets

Main Tray Capacity (same size sheets only)

Original Pages

2 to 9
10 to 20
21 to 30
31 to 40
41 to 50

Other than A3R, 11x17R

100 stacks

50 stacks
30 stacks
25 stacks
20 stacks

A3R, 11x17R

50 stacks
50 stacks
30 stacks

25 stacks
20 stacks

FS-108/108B

Paper curling: Maximum 10mm

Booklet mode fBooklet mode f

Booklet mode f

Booklet mode fBooklet mode f

olding leolding le

olding le

olding leolding le

vel (FS-108BM onlvel (FS-108BM onl

vel (FS-108BM onl

vel (FS-108B onlvel (FS-108BM onl

y)y)

y)

y)y)

(For 22 lb. paper or equivalent, same size sheets only)

* May be unfolded after exit, provided that fold state can

be easily restored.

Amount of sort
off-setting: 30mm (when offsetting/grouping)
Tray: Main tray

Subtray
Booklet tray (FS-108B only)

Booklet Mode (FS-108B only):

• Stapling and folding + folding
20 booklets of 5 folded sheets each (20 pages/book­let; eq. to 400 pages)

• Folding
33 booklets of 3 folded sheets each (12 pages/book­let; eq. to 396 pages)

FS-1

FS-108/108B

Staple Mode

Number of pages
which may be stapled:

50 sheets maximum* (22 lb. high­quality paper, 5mm and below)

* Maximum sheets can be set to 45, 40, or 35 in accor-

dance with paper quality and thickness.

Staple position: A = 8.5mm±3mm

(adjustment possible)
B = 8.5mm±3mm
C = 82.5mm±3mm
D = 8.5mm±3mm

(adjustment possible)
E = 14mm±3mm)

Machine Data

Power Source:

24 VDC, 5 VDC (supplied from the

main body)
Maximum Power
Consumption: 100VA
Weight:

FS-108: Approximately 120 lb.
FS-108B: Approximately 175 lb.

External Dimensions:

85

367

781656

1095

1151

Single staple (rear) Two staples Single staple

Booklet mode (stapling and folding)

Staple capacity:Staple capacity:

Staple capacity: 5000 staples/car tridge

Staple capacity:Staple capacity:

(FS-108B only)

@@@(front)

Booklet Mode (FS-108B only)

Stapling-and-folding:

Maximum 16 sheets (22 lb. high-quality paper)
Maximum 15 sheets (22 lb.
+ 1 sheet (53 lb.

high-quality paper)

Folding: Maximum 3 sheets (22 lb. high-quality paper)

high-quality paper)

Maintenance

Maintenance: Same as the main body.
Service Life: Same as main body.

Machine Operating Environment

Temperature: 50 to 86 F
Humidity: 10 to 80% RH

These specifications are subject to change without notice.

Option

PI-108 (Sheet feeder)

FS-2

CENTER CROSS SECTION

Sub-tray

Shift Unit

Main Tray Paper Exit Unit

FS-108/108B

Gate
Sub-tray Gate

Stacker Unit

Booklet T ra y

Folding Stopper

By-pass Gate

Flat-Stapling Stopper

Stapler Unit

Area within dotted lines:
FS-108BM only

Stapling and
Folding Stopper

Folding Unit

FS-3

FS-108/108B

DRIVE SYSTEM DIAGRAM

Paper Conveyance Drive

Sub-tray Paper Exit Roller B

Conveyance Slide Shaft

Sub-tray Paper Exit Roller C

Sub-tray Paper Exit Roller A

Nip Paper Exit Roller

Conveyance Roller D

Conveyance Roller C

Conveyance Roller B

Conveyance Roller A

M1 (FNS Conveyance)

Paper Exit Roller

M7 (Paper Exit
Roller)

Intermediate Conveyance Roller

FS-4

Stacker Drive

FS-108/108B

Paper Exit Roller

Paper Exit Belts

Stacker Entrance Roller

Swivel Roller

Paper Exit Arms

Folding Drive (FS-108BM only)

M7 (Paper Exit Roller)

Pulley

M13 (Stacker Entrance)

Folding Roller B

Folding Roller A

Folding Conveyance Roller

Folding Knife

M19 (Folding Knife)

Pressure Roller A

Pressure Roller B
Folding Conveyance Belts

M20 (Folding Conveyance)

FS-5

FS-108/108B

PAPER CONVEYANCE PATH

Paper Conveyance Path

The finisher provides four paper paths, as shown in the diagram below.
Face up and face down inversion is handled by at the main body side by the main body’s exit page inverter.

Sub-tray

Main T ra y

Booklet T ra y

Finishing

Sort, Group, Non-sort mode

Sub-tray mode
Staple mode
Booklet mode (FS-108BM only)

Paper Conveyance Paths

FS-6

Non-Sort Mode

Exit to main tray

A paper exited from the main body is conveyed and exited to the main tray.

FS-108/108B

Sub-tray Gate

Gate

Conveyance Roller B

Main T ra y

Paper Exit Roller

Conveyance Roller A

Conveyance Roller D

Conveyance Roller C

FS-7

FS-108/108B

Sort, Group Mode

Exit to the main traExit to the main tra

Exit to the main tra

Exit to the main traExit to the main tra

Paper exited from the main body is conveyed and exited to the main tray. This mode has an offset function that allows each

page of the even numbered sets to be exited with the paper shifted 30mm to the rear.
Off-set Function
(1) The odd numbered pages are exited to the main tray with the image side face down.
(2) The even numbered pages are shifted 30mm to the rear by the conveyance slide shaft of the shift unit and then exited to

the main tray.

yy

y

yy

Main T ra y

Paper Exit Roller

Shift Unit

Conveyance Slide Shaft

Conveyance Roller D

Gate

Sub-tray Gate

Conveyance Roller B

Conveyance Roller A

Conveyance Roller C

FS-8

Subtray Mode

The subtray gate opens. Paper exited from the main body is conveyed and exited to the subtray.

Sub-tray Paper Exit Roller C

Sub-tray

Sub-tray Paper Exit Roller B

Sub-tray Paper Exit Roller A

FS-108/108B

Sub-tray Gate

Conveyance Roller B

Conveyance Roller A

FS-9

FS-108/108B

Staple Mode

(1) The gate switches to the staple mode.
(2) For 8.5x11R paper and above, the paper exit opening opens.
(3) The first set of paper is conveyed and stacked.

1) The stacker section roller sends the paper to the flat stapling stopper and the paper is lined up in the lengthwise
direction.

2) The upper alignment plate lines up paper in the widthwise direction.

3) Paper is stapled.

4) The first set is conveyed by the paper exit arm and exited to the main tray.

Paper Exit Opening

Conveyance Roller C

Main Tray

First Stapled Set

Paper Exit Belt

Stapler Unit

Intermediate Conveyance
Roller

Alignment Plate
/Upper

Gate

Sub-tray Gate

Conveyance Roller B

Conveyance Roller A

By-pass
Gate

Stacker Entrance
Roller

Swivel Roller

Flat-Stapling Stopper

Paper Exit Arm

FS-10

FS-108/108B

(4) The second and subsequent sets of paper are conveyed and stacked.

1) The first page stops in the stacker entrance with the bypass gate opened. The stacker entrance roller stops to wait for
the previous stack to be exited.

2) The bypass gate is closed and the second page is stacked on top of the first.

3) Once the previous stack has exited, the stack entrance roller rotates and the first and second pages are simultaneously
sent to the stacker.

* The above steps (1) to (3) are for paper to a maximum of 8.5x11 size.

4) The stacker section roller sends the paper to the flat-stapling stopper and the paper is lined up in the lengthwise
direction.

5) The upper alignment plate lines up paper in the widthwise direction.

6) When all paper is conveyed to the stacker, the paper is stapled.

7) The second and subsequent sets are conveyed by the paper exit arm and the paper is exited to the main tray.

Paper Exit Opening

Conveyance Roller C

Second Stapled Set

Main Tray

Intermediate
Conveyance Roller

Paper Exit Belt

Stapler Unit

Alignment Plate/Upper

Second Sheet

Sub-tray Gate

Gate

Conveyance Roller B

Conveyance Roller A

By-pass
Gate

First Sheet

Stacker Entrance Roller

Swivel Roller

Flat-Stapling Stopper

Paper Exit Arm

FS-11

FS-108/108B

Booklet Mode (FS-108BM only)

(1) The gate switches to the staple mode.
(2) The paper exit opening opens.
(3) The paper is conveyed and stacked.
(4) The stacker section roller sends the paper to the stapling and folding stopper and the paper is lined up in the lengthwise

direction.
(5) The upper and lower alignment plate lines up paper in the widthwise direction.
(6) If stapling and folding has been selected, staple the stack.
(7) Release the stapling and folding stopper and convey the stack to the folding unit by the paper exit belt.
(8) Convey the stack up to the folding stopper, fold it with the folding knife, and eject to the booklet tray.

Conveyance Roller C

Booklet Tray

Intermediate Conveyance Roller

Upper
Alignment Plate

Paper Exit Belt

Stapler Unit

Gate

Pressure Roller A

Folding Roller A

Sub-tray Gate

Conveyance Roller B

Conveyance Roller A

Stacker Entrance Roller

Swivel Roller

Alignment Plate/Lower

Stapling and Folding stopper

Folding Conveyance Roller

Pressure
Roller B

Folding Stopper

Folding Conveyance Belt

Folding
Roller B

Folding Knife

FS-12

EXTERNAL SECTION

Screws

Hinge

Front Cover

Composition (FS-108/FS-108BM)

FS-108/108B

Paper Exit Cover

Sub-tray

Main T ra y

Rear Cover

Paper Exit Stopper Plate

Booklet T ra y

Disassembly and Reassembly

CAUTION: Be sure that the power cord has been un-

plugged from the outlet.

1. Removing and Reinstalling the Rear Cover
a. Procedure

(1) Remove the 5 set screws holding the rear cover in

place, and take off the cover.

Top Cover

Front Cover

Front Side Cover

2. Removing and Reinstalling the Front Cover
a. Procedure

(1) Open the front cover.
(2) Remove the 2 set screws holding the bottom hinge in

place, and take off the front cover.

Screws

(2) Reinstall the rear cover in the opposite sequence to

removal.

Screws

Rear Cover

(3) Reinstall the front cover in the opposite sequence to

removal.

FS-13

FS-108/108B

Screw

Paper Exit Cover

Screw

3. Removing and Reinstalling the Top Cover
a. Procedure

(1) Remove the subtray.
(2) Open the paper exit cover.
(3) Remove the two caps.
(4) Open the front cover.
(5) Remove the 6 set screws holding the top cover in

place, and take off the cover.

Screws

Cap

4 Removing and Reinstalling the Paper Exit Cover
a. Procedure

(1) Remove the top cover.
(2) Remove the 2 set screws holding the paper exit cover

in place, and take off the paper exit cover.

Screws

(3) Reinstall the paper cover in the opposite sequence to

removal.

(6) Reinstall the top cover in the opposite sequence to

removal.

FS-14

FS-108/108B

Front Side
Cover

Screws

5. Removing and Reinstalling the Main Tray
a. Procedure

(1) Remove the rear cover.
(2) Detach the connector and remove the 2 set screws

holding motor M3 (tray up-down motor) in place. Re­move M3.

CAUTION: Support the main tray with your hand when

removing M3.

M3 (Tray Up-Down)

Screws

Connector

(3) Remove the 2 set screws holding the main tray in

place, and lift the main tray up and off.

Screws

6. Removing and Reattaching the Front Side Cover
a. Procedure

(1) Remove the 2 set screws holding the front side cover

in place, and take off the front side cover.

(2) Reinstall the front side cover in the opposite sequence

to removal.

Main Tray

(4) Reinstall the main tray in the opposite sequence to

removal.

FS-15

FS-108/108B

Screws

Screws

Up-Down Stay

Wire Bracket

Wire Bracket

7. Removing and Reinstalling the Paper Exit Stopper Plate
a. Procedure

(1) Remove the following parts.

• Rear cover

• Main tray

• Booklet tray

• Front cover

• Front side cover

(2) Remove the 4 set screws holding the left and right

up-down covers in place, and remove these two cov­ers.

Screws

Screws

Up-Down Covers

(3) Remove the 4 set screws from the front and rear wire

brackets (two screws at each bracket), and then re­move the up-down stay.

(4) Remove 8 set screws and take off the front and rear

auxiliary side up down plates.

Rear Auxiliary
Side-Up-Down
Plate

Front Auxiliary
Side-Up-Down
Plate

Screws

Screws

Screws

FS-16

FS-108/108B

Press down

Wire Bracket

Wire Bracket

Screws

Screws

Up-Down Stay

(5) Remove the two plates (front and back plates) at the

booklet exit.

Plate

Screw

Plate

(6) Remove 13 more set screws, and take off the paper

exit stopper.

(7) Remove the up-down stay. (See “Removing and re-

attaching the up-down stay”.)

(8) Reinstall the stopper in the opposite sequence to re-

moval. But note the following caution.

CAUTION:Be sure to press down on the up-down stay

while tightening the 4 screws for the wire brack­ets.

Screws

Paper Exit
Stopper Plate

Up-Down Stay

Screws

Screws

Screws

Screws

FS-17

FS-108/108B

CONVEYANCE SECTION

Composition

Sub-tray Paper Exit Roller C
Sub-tray Paper Exit Roller B

FS-108/FS-108BM Rear

Sub-tray Paper Exit Roller A

Conveyance Roller B

Conveyance Roller A

Conveyance Roller C

Intermediate Conveyance Roller

M1 (FNS Conveyance)

Conveyance Slide Shaft

M7 (Paper Exit Roller)

Nip Paper Exit Roller

Paper Exit Roller
(Sponge Roller)

Conveyance Roller D

M13 (Stacker Entrance)

Stacker Entrance Roller

Paper Exit Belt

Area within dotted lines: FM-108BM only

Folding Conveyance Roller

Folding Conveyance Belt

M20 (Folding Conveyance)

Folding Roller A
Pressure Roller A

Pressure Roller B

Folding Roller B

FS-18

FS-108/108B

Link Mechanism

M2 (Roller Shift)

M2 (Roller Shift)

Paper exit direction

Slide Shaft

Link Mechanism

Slide Shaft

30mm towards the direction
of the back side

Mechanisms

1. Paper Conveyance
Paper conveyance is carried out by conveyance rollers A,
B, C, and D; the intermediate conveyance roller; the con­veyance slide shaft; and subtray paper exit rollers A, B,
and C. These components are driven by M1 (FNS con­veyance) by means of a timing belt.

Stacking is implemented by the stacker entrance roller and
the swivel roller. These rollers are driven by the M13
(stacker entrance) by means of a timing belt.

Ejection to the main tray (following staple processing) is
implemented by the stacker paper exit belt arm and the
paper exit roller. These components are driven by the M7
(paper exit).

Ejection to the booklet tray is implemented by the folding
conveyance roller, the folding conveyance belt, the fold­ing knife, folding rollers A and B, and pressure rollers A
and B. The folding knife is driven by M19 (folding knife).
The conveyance belt, folding rollers, and pressure rollers
are driven by the M20 (folding conveyance) by means of a
timing belt.

2. Paper Path Switching

Gate

Sub-tray Gate

SD2

(Sub-tray Paper Exit)

By-pass Gate

SD5 (By-pass)

SD1 (Gate)

Path switching is carried out by the gate, the subtray gate,
and the bypass gate. Each of these is controlled by the
ON/OFF action of a corresponding solenoid: SD1 (gate),
SD2 (subtray paper exit), and SD5 (bypass), respectively .

3. Shift Unit Sort Shift Operation
(1) Paper entering the shift unit is fed toward the paper

exit direction by the action of the slide shaft.

(2) Driving by M2 (roller shift) causes the linkage to shift

the slide shaft and paper 30mm toward the rear.

FS-19

FS-108/108B

4. Stacker Unit

Alignment Plate/
Upper

Paper Exit
Belts

Paper Exit Arms

Alignment Plate/Upper

FS-108BM Only

M17 (Stapling and Folding Stopper Release)

M14
(Stapling and Folding Stopper)

M5
(Alignment
Plate/Upper)

Paper Alignment (Staple Mode (Flat Stapling))
Sheets conveyed into the stacker are aligned by the oscil­lation of the (front and rear) alignment plates/upper. The
alignment plates/upper are driven by M5 (alignment plate/
upper).

Paper Alignment (Booklet Mode (FS-108BM only))

Sheets conveyed into the stacker are aligned by the move­ment of the (front and rear) alignment plates/upper and
the (front and rear) alignment plates/lower. The alignment
plates/upper are driven by M5 (alignment plate/upper); the
alignment plates/lower are driven by M15 (alignment plate/
lower). The stapling and folding stopper is moved by M14
(stapling and folding stopper) and is released by M17 (sta­pling and folding stopper release).

Paper Exiting

Stapled paper is sent to the paper exit by the paper exit
arm. The paper exit belt is driven by M7 ( paper exit roller).

Feeding to the Folding Unit (FS-108BM only)

M17 (stapling and folding stopper release) releases the
stapling and folding stopper and feeds the paper into the
folding unit.

Alignment Plate/
Lower

Alignment
Plate/Lower

M15
(Alignment Plate/
Lower)

Stapling and Folding Stopper

FS-20

FS-108/108B

Conveyance
Roller B

Conveyance Roller A

Conveyance
Roller C

Conveyance Roller D

Paper Exit Rolle

r

Main T ra y

Paper Exit Opening

SD4 (Paper Exit Opening)

Nip Roller

Paper Exit Roller

SD4 (Paper Exit
Opening)

5. Paper Exit Opening Unit

M8

SD4 (Paper Exit Opening)

Paper Exit Opening

Nip Roller

(Paper Exit Opening)

a. Staple Mode and Booklet Mode Operation for

Paper Sizes 8.5x11R and Above
Because paper of this size juts out from the stacker, the
paper exit opening is held open from the start of copying
until the completion of stapling.

c. Pressure of the Paper Exit Roller

The paper exit roller turns more slowly than the convey­ance rollers (A, B, C, and D), and remains unengaged by
the nip roller except during ejection.
When paper reaches the paper exit opening, the paper
exit roller is engaged by the nip roller and the paper is
ejected to the main tray. Engagement and release is con­trolled by SD4 (paper exit opening).

b. Paper Exit of the Staple Mode (Flat Stapling)

Upon completion of stapling, the paper exit closes, and
the paper is grasped and ejected to the main tray. The
opening and closing of the paper exit is controlled by M8
(paper exit opening).

M8 (Paper Exit Opening)

Paper Exit Opening

Open

Close

FS-21

FS-108/108B

Sponge Roller

Match

Match

6. Folding by the Folding Unit (FS-108BM only)
Paper is conveyed to the folding stopper by the action of
the folding conveyance roller and the folding conveyance
belts, and is then folded by the action of the folding knife
and the folding rollers. The folding conveyance roller, the
folding conveyance belts, the folding rollers, and the pres­sure roller are driven by M20 (folding conveyance). M18
(folding stopper) drives the folding stopper. M19 (folding
knife) drives the folding knife.

M20
(Folding Conveyance)

Folding Rollers

M18
(Folding
Stopper)

Folding Conveyance Belts

Disassembly and Reassembly

CAUTION: Be sure that the power cord has been un-

plugged from the outlet.

1. Replacing a Paper Exit Roller (Sponge Roller)
a. Procedure

(1) Run the copier in mode 47 (code 75-06) to lower the

main tray.

Sponge Roller

Main Tray

Folding
Paper-End Stopper

Paper

Folding Knife

Folding Knife

Folding Knife

M19 (Folding Knife)

(2) Insert the end of a screwdriver into the slot in the

sponge roller, and twist the screwdriver to pry the
roller off.

(3) Take the two halves of the new sponge roller and

align their indentations with the indentations on the
roller shaft.

(4) Press the two halves of the roller together until the

click into place.

FS-22

FS-108/108B

Clamps

Wirings

M2 (Roller Shift) Connector

PS18 (Roller Shift HP)
Connector

Clamp Screw

Screws

Ground Wire
Fixing Screw

Shift Unit

Screws

2. Replacing an Intermediate Conveyance Roller (Sponge
Roller)

a. Procedure

(1) Open the front cover and pull out the stacker/stapler

unit.

(2) Insert the end of a screwdriver into the slot in the

sponge roller, and twist the screwdriver to pry the
roller off.

Sponge Rollers

3. Removing and Reinstalling the Shift Unit
a. Procedure

(1) Remove the following parts.

• Rear cover

• Top cover

• PI-108 (if installed)

(2) Detach the M2 (roller shift) and PS18 (roller shift HP)

connectors.

(3) Remove the wiring from the three clamps.

Sponge Roller

(3) Take the two halves of the new sponge roller and

align their indentations with the indentations on the
roller shaft.

(4) Press the two halves of the roller together so that

they click into place.

Match

Match

(4) Remove the ground wire fixing screw.
(5) Remove the clamp set screw.
(6) Remove 4 more set screws (see illustration).

FS-23

FS-108/108B

Drive Belt

Pulley

Belt

Collar

E-ring

Gear

E-ring

Collar

Shaft Holder

(7) Remove 3 more set screws and remove the shift pul-

ley.

(8) Slide the conveyance slide shaft and take out the

shift unit.

Screws

Conveyance
Slide Shaft

Screw

Shift Pulley

(9) Reinstall the shift unit in the opposite sequence to

removal.

CAUTION: When reinstalling the shift unit, be sure to align

the conveyance slide shaft with the hole in the
shift pulley.

4. Removing and Reinstalling the Paper Exit-Opening Unit
a. Procedure

(1) Remove the following parts.

• Rear cover

• Top cover

• Front side cover

• PI-108 (if installed)

• Shift unit
(2) Remove the pulley and its belt.
(3) Remove the e-ring, and then remove the collar, the

gear, and the drive belt.

(4) Remove the collar, e-ring, and shaft holder.

FS-24

(5) Remove the clamp set screw and the ground wire

E-ring

Shaft Holder

Spring

screw.

(6) Detach the SD4 (paper exit opening) and PS6 (pa-

per exit-1) connectors.

(7) Remove the screw holding PS10 (paper exit-2) to the

unit. Remove PS10 and detach the connector.

CAUTION: When withdrawing the PS10, ensure that

needless force is not applied to the lever be­low the PS10.

FS-108/108B

SD4 (Paper Exit
Opening) Connector

Clamp Screw

PS10 (Paper Exit-2)

Ground Wire Screw

PS6 (Paper Exit-1)
Connector

PS10 (Paper Exit-2)
Screw

(8) Remove the paper exit opening open-shut link screw.

Paper Exit Opening
Open-Shut Link

(10) Remove the spring.

Screw

(9) Open the front cover. Remove the front side e-ring

and the shaft holder.

(11) Remove the 4 set screws holding the paper exit-open-

ing cover in place, and take off the cover.

FS-25

FS-108/108B

Stacker/Stapler Unit

Rail Stopper Screw

Rail Stopper Screw

Screws

Screws

Cover

(12) Lift the paper exit opening unit up and out.

Paper Exit-Opening Cover

Screws

Screws

Paper Exit-Opening Unit

(13) Reinstall the unit in the opposite sequence to removal.

5. Removing and Reinstalling the Stacker/Stapler Unit
a. Procedure

(1) Open the front cover and pull the stacker/stapler unit

part of the way out..

(2) Remove the 2 rail stopper set screws. Then pull the

stacker/stapler unit all of the way out.

(3) Remove 4 set screws holding the cover in place, and

remove the cover.

FS-26

FS-108/108B

Cartridge Rails

Screws

Screws

Screws

Screw

Screw

Stacker/
Stapler Unit

(4) Remove the 2 set screws holding the bundle guide

arm to the stacker/stapler unit.

Screws

Bundle Guide Arm

(5) Detach the two connectors from the connector board

at the rear of the stacker/stapler unit.

(6) Remove the 4 set screws holding the cartridge rails

in place, and take out the cartridge rails.

(7) Remove the final 4 set screws holding the stacker/

stapler unit in place. Remove the stacker/stapler unit.

Connector

Connector

(8) Reinstall the stacker/stapler unit in the opposite se-

quence to removal.

FS-27

FS-108/108B

Sub-tray

Sub-tray Paper Exit Roller C

PS1 (Sub-tray
Paper Exit)

Sub-tray Paper
Exit Roller A

Sub-tray
Paper Exit Roller B

M1 (FNS
Conveyance)

PS4
(FIN Entrance
Path)

Sub-tray

Conveyance
Roller A

Conveyance Roller B

M1 (FNS Conveyance) Control

M1F/R

24V

24V
PGND
PGND

PS1IN

GND

PS4IN

GND

GND

GND

1-B6

5V

1-B1
1-B2
1-B3
1-B4
1-B5
1-B19
1-B20
1-B13
1-B14

5V

1-A12
1-A30
1-A21

1-A11

5V

1-A29
1-A20

5V

1-A13

5V

1-B18
1-A22

24V-IN

24V

5V
SGND
PGND
PGND

TXD

NC

DTR

NC

CTS

NC

RXD

NC

DSR

NC

RTS

NC

MAIN BODY

MS1

28-6

28-3
28-1

114-1

114-2

114-5

114-3

114-7

114-6

6-1

2-9
2-7

6-3
6-4
6-5
6-6

7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
7-10
7-11
7-12

5V
SGND
PGND
PGND

RXD
SGND
CTS
SGND
DTR
SGND
TXD
SGND
RTS
SGND
DSR
SGND

M1BRK

M1CONT

M1CLK

M1PLL

PS10IN

PS207IN

FNS CB

M1 (finisher conveyance) drives paper conveyance (if
main-tray exit) and paper exit (if sub-tray exit) by means
of conveyance rollers A, B, C, D, conveyance slide shaft
and the sub-tray paper paper exit roller A, B, C. M1 is
controlled by the FNS CB (FNS control board).

M1

PS1

PS4

PS207

1. Operation
a. Interlock

FNS paper-conveyance drive control is initiated by the ON
signal from the main body START button. If MS1 (inter­lock) is OFF at this time, however, the finisher transmits
an error signal to the main body CB and does not begin
control.

b. PS207 (paper exit cover open/close detection) control

As mentioned above, FNS paper-conveyance drive con­trol is initiated by the ON signal from the main body STAR T
button. But if PS207 (paper exit cover open/close detec­tor) is [H] at this time (paper exit cover is open), the FNS
transmits an error signal to the main body CB and does
not begin control.

c. M1 (FNS conveyance) control

(1) Main tray paper exit operation

M1 (FNS conveyance) is set ON by the ON signal of
the STAR T button and goes OFF a preset time inter­val after PS4 (FIN entrance passage) detects the trail­ing edge of the final copy paper.

(2) Sub-tray paper exit operation

M1 is set ON by the START button ON signal, and
begins with rapid rotation. M1 then switches to slow
rotation a preset time period after PS4 detects the
trailing edge of the paper. M1 then returns to rapid
rotation to prepare for transport of the next paper.
M1 goes OFF a preset time period after PS4 detects
the trailing edge of the final paper.

FS-28

2. Signals
a. Input signals

(1) TXD (Main body CB -> FNS CB)

Serial data line; transmits operating status of the main
body’s CB to the FNS CB.

(2) DTR (Main body CB -> FNS CB)

Request to send signal from the main body to the
FNS.

(3) RTS (Main body CB -> FNS CB)

Transmission acknowledgment signal from the main
body to the FNS.

(4) 24V IN (MS1 -> FNS CB)

Outputs +24V if MS1 (interlock) is ON. The power is
supplied to all loads on the FNS side.

(5) PS207 IN (PS207 -> FNS CB)

Inputs [L] when the subtray paper paper exit cover is
closed.

(6) PS4 IN (PS4 -> FNS CB)

Comes ON and inputs [L] when paper passes through
the FNS inlet.

(7) MI PLL (M1 -> FNS CB)

Monitors rotation status of M1 (FNS conveyance).
[L] is input when M1 reaches the specified speed.

FS-108/108B

b. Output signals

(1) TXD (FNS CB -> Main body CB)

Serial data line; transmits FNS operating status to
the main body’s CB.

(2) RTS (FNS CB -> Main body CB)

Request to send signal from the FNS to the main body.

(3) DTR (FNS CB -> Main body CB)

Transmission acknowledgment signal from the FNS
to the main body.

(4) M1 CONT (FNS CB -> M1)

M1 (FNS conveyance) drive control signal.
[H]: OFF
[L]: ON

(5) M1 BRK (FNS CB -> M1)

M1 (FNS conveyance) brake signal.
[H]: OFF
[L]: ON

(6) M1 CLK (FNS CB -> M1)

Reference clock signal for controlling the speed of
M1 (FNS conveyance).

(7) M1 F/R (FNS CB -> M1)

M1 (FNS conveyance) direction signal.
[H]: Counterclockwise
[L]: Clockwise

FS-29

FS-108/108B

PS1

(Sub-tray

Paper Exit)

PS4

(FIN Entrance

Passage)

PS5 (Stacker Conveyance Passage)

PS6 (Paper Exit-1)

SD1 (Gate)

SD5

(By-pass)

Stacker Entrance Roller

SD2

(Sub-tray

Paper Exit)

Gate Control

DRV

1-B26

24V

1-B27

DRV

24V-IN

MS1

24V

5V
SGND
PGND
PGND

TXD

NC

DTR

NC

CTS

NC

RXD

NC

DSR

NC

RTS

NC

MAIN BODY

28-6

28-3
28-1

114-1

114-2

114-5

114-3

114-7

114-6

2-9
2-7

6-1

6-3
6-4
6-5
6-6

7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
7-10
7-11
7-12

5V
SGND
PGND
PGND

RXD
SGND
CTS
SGND
DTR
SGND
TXD
SGND
RTS
SGND
DSR
SGND

FNS CB

The paper conveyance path is switched by the ON/OFF
switching of SD1 (gate), SD2 (subtray paper exit), and SD5
(bypass), which are switched ON/OFF by the FNS CB (FNS
control board).

24V

DRV

24V

PS4IN

GND

PS5IN

GND

PS6IN

GND

1-B24
1-B28

1-B23

1-A3

5V

1-A11
1-A29
1-A20

5V

1-A11
1-A28
1-A19

5V

1-A9
1-A27
1-A18

1. Operation

SD1

SD2

SD5

PS4

PS5

PS6

a. Main-tray Paper Exit Operation (Sort, Group, and Non-

Sort modes)
Paper moves through the shift unit and paper exits to the
main tray , passing through the subtray gate and the gate.
As both these gates direct the paper toward the shift unit
side by default, SD2 (sub tray paper exit) and SD1 (gate)
remain off.

FS-30

FS-108/108B

Finishing

SD1

Sort, Group, and Non-Sort modes

Sub-tray mode

ON

SD5

ON

(OFF)

OFF

SD2

Staple mode, sizes A4,
B5 ( ) is for sizes other
than A4, B5

First paper of
2nd or
subsequent set

Others

Booklet mode (FS-108B only)

ON

ON
ON

OFF

OFF

OFF

OFF

OFF
OFF

OFF

OFF
OFF

b. Stacker conveyance operation (Staple mode)

Paper moves through the stacker unit to the main tray,
passing the sub tray gate, the gate, and the bypass gate.
As the subtray gate is already set to the stacker side, SD2
(sub-tray paper paper exit) remains off.
(1) ON timing for SD1 (gate)

SD1 comes on when the ST ART button ON signal is
received, setting the gate to the stacker side. The
FNS stands by for paper conveyance to begin.

(2) Conveyance of paper sizes other than 8.5x11 and

8.5x5.5
The gates direct the paper into the stacker. SD5 re­mains OFF, as paper moves without bypass toward
the stacker entrance roller.

(3) Conveyance of 8.5x1 1 and 8.5x5.5 paper (first paper

of second and subsequent sets)
SD5 comes ON a preset time period after PS4 (FIN
entrance passage) detects the trailing edge of the
final paper of the preceding set. This switches the
bypass gate to the bypass side, so that the first pa­per of the new set is carried to that side.

(4) Conveyance of 8.5x11 and 8.5x5.5 paper (second and

subsequent papers of second and subsequent sets)
SD5 goes OFF a preset time period after PS4 de­tects the trailing edge of the first sheet of the current
set, closing the bypass gate. The second sheet moves
directly (without bypass), together with the first pa­per, to the stacker entrance roller.
SD5 remains off for the third and subsequent sheets
of the set, which move without bypass to the stacker.

(5) OFF timing for SD1 (gate)

SD1 goes OFF a preset time period after PS6 (paper
exit 1) detects the final stapled set.

(1) ON timing for SD1 (gate)

SD1 comes on when the ST ART button ON signal is
received, setting the gate to the stacker side. The
FNS stands by for paper conveyance to begin.

(2) The gates direct the paper to the stacker. SD5 re-

mains OFF, as paper moves without bypass toward
the stacker entrance roller.

(3) OFF timing for SD1 (gate)

SD1 goes OFF a preset time period after PS6 (paper
exit 1) detects the final stapled set.

d. Subtray paper exit operation

SD2 (subtray paper exit) comes on when the STAR T but­ton ON signal is received, setting the subtray gate to the
subtray side. SD2 goes OFF a preset time period after
PS4 (FIN entrance passage) detects the final sheet.

c. Stacker conveyance operation (Booklet mode) (FS-108BM

only)
Paper moves through the stacker unit to the folding unit,
passing the subtray gate, the gate, and the bypass gate.
As the sub tray gate is already set to the stacker side,
SD2 remains off.

FS-31

FS-108/108B

2. Signals
a. Input signals

(1) TXD (Main body CB -> FNS CB)

Serial data line; transmits operating status of the main
body’s CB to the FNS CB.

(2) DTR (Main body CB -> FNS CB)

Request to send signal from the main body to the
FNS.

(3) RTS (Main body CB -> FNS CB)

Transmission acknowledgment signal from the main
body to the FNS.

(4) PS1 IN (PS1 -> FNS CB)

Comes ON ([L]) when paper passage is detected at
the sub-tray paper paper exit.

(5) PS4 IN (PS4 -> FNS CB)

Comes ON ([L]) when paper passage is detected at
the FNS entrance.

(6) PS5 IN (PS5 -> FNS CB)

Comes ON ([L]) when paper passage is detected at
the stacker entrance.

(7) PS6 IN (PS6 -> FNS CB)

Comes ON ([L]) when paper passage is detected at
the main tray paper paper exit.

b. Output signals

(1) TXD (FNS CB -> Main body CB)

Serial data line; transmits FNS operating status to
the main body CB.

(2) RTS (FNS CB -> Main body CB)

Request to send signal from the FNS to the main body.

(3) DTR (FNS CB -> Main body CB)

Transmission acknowledgment signal from the FNS
to the main body.

(4) SD1 DRV (FNS CB -> SD1)

SD1 (gate) drive control signal.
[H]: OFF
[L]: ON

(5) SD2 DRV (FNS CB -> SD2)

SD2 (sub-tray) drive control signal.
[H]: OFF
[L]: ON

(6) SD5 DRV (FNS CB -> SD5)

SD5 (by-pass) drive control signal.
[H]: OFF
[L]: ON

FS-32

M13 (Stacker Entrance) Control

PS4

(FIN Entrance

Passage)

PS5 (Stacker Conveyance Passage)

PS6 (Paper Exit-1)

Stacker Entrance Roller

M13 (Stacker Entrance)

Swivel Roller

Flat-Stapling Stopper

Stapling and
Folding Stopper

FS-108/108B

M13DRVA
M13DRVA
M13DRVB
M13DRVB

24V
24V

24V
M13DRVA
M13DRVA
M13DRVB
M13DRVB

24V

21-A1
21-A2
21-A3
21-A4
21-A5
21-A6

25-A11
25-A7
25-A8
25-A9
25-A10
25-A12

M13

MS1

24V

5V
SGND
PGND
PGND

TXD

NC

DTR

NC

CTS

NC

RXD

NC

DSR

NC

RTS

NC

MAIN BODY

28-6

28-3
28-1

114-1

114-2

114-5

114-3

114-7

114-6

M13DRVA

4-A1

M13DRVA

4-A2

M13DRVB

4-A3

M13DRVB

4-A4

24V

4-A5

24V

4-A6

6-1

2-9
2-7

6-3
6-4
6-5
6-6

7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
7-10
7-11
7-12

24V-IN

5V
SGND
PGND
PGND

RXD
SGND
CTS
SGND
DTR
SGND
TXD
SGND
RTS
SGND
DSR
SGND

PS4IN

GND

PS5IN

GND

5V

1-A11
1-A29
1-A20

5V

1-A11
1-A28
1-A19

PS4

PS5

FNS CBRB

M13 (stacker entrance) drives the stacker entrance roller
and the swivel roller, thereby carrying out the following
functions: conveyance of paper to the stacker; paper align­ment; and adjustment of staple waiting time. M13 is con­trolled by the FNS CB (FNS control board) via the RB (re­lay board).

1. Operation
Conveyance to the stacker varies according to paper size:
one method is used for 8.5x11 and 8.5x5.5, another is used
for all other sizes.

FS-33

FS-108/108B

a. Conveyance to the stacker (sizes other than 8.5x11 or

8.5x5.5)
(1) M13 ON timing

M13 (stacker entrance) is set ON by the STAR T but­ton ON signal, and begins with rapid rotation. M13
then switches to slow rotation a preset time period
after PS4 (FIN entrance passage) detects the trail­ing edge of the first paper. M13 then returns to rapid
rotation a preset period after PS5 (stacker convey­ance passage) detects the trailing edge of the paper.
This action is repeated as necessary to transport all
papers to be stacked into the stacker.

(2) M13 OFF timing

M13 goes OFF a preset time period after PS5 (stacker
conveyance passage) detects the trailing edge of the
final paper set.

b. Conveyance to the stacker (8.5x11 and 8.5x5.5 sizes)

(1) First set

Paper for the first set to be stapled is conveyed in the
same way as other paper sizes.

(2) First paper of second and subsequent sets

M13 goes OFF a preset time period after PS4 (FIN
entrance passage) detects the trailing edge of the
first paper for the second or subsequent set, and the
paper moves into the by-pass. This prevents paper
from moving into the stacker while stapling of the pre­vious set is still in progress.

(3) Second and subsequent papers of second and sub-

sequent sets
M13 resumes slow rotation a preset time period after
PS4 detects the trailing edge of the second paper of
the set. This causes the first and second papers to
move together (one atop the other) into the stacker.
M13 switches to rapid rotation a preset time period
after PS5 (stacker conveyance passage) detects the
trailing edge of the first and second papers, so that it
is ready to handle the third paper of the set when it
arrives from the main body. Third and subsequent
papers for the set are then conveyed in the same
way as the papers in the first set.

2. Signals
a. Input signals

(1) TXD (Main body CB -> FNS CB)

Serial data line; transmits operating status of the main
body’s CB to the FNS CB.

(2) DTR (Main body CB -> FNS CB)

Request to send signal from the main body to the
FNS.

(3) RTS (Main body CB -> FNS CB)

Transmission acknowledgment signal from the main
body to the FNS.

(4) PS4 IN (PS4 -> FNS CB)

Comes ON ([L]) when paper passage is detected at
the FNS entrance.

(5) PS5 IN (PS5 -> FNS CB)

Comes ON ([L]) when paper passage is detected at
the stacker entrance.

(6) PS6 IN (PS6 -> FNS CB)

Comes ON ([L]) when paper is detected at the main
tray paper paper exit.

b. Output signals

(1) TXD (FNS CB -> Main body CB)

Serial data line; transmits FNS operating status to
the main body’s CB.

(2) RTS (FNS CB -> Main body CB)

Request to send signal from the FNS to the main body.

(3) DTR (FNS CB -> Main body CB)

Transmission acknowledgment signal from the FNS
to the main body.

(4) M13 DRV A,A / M13 DRV B,B (FNS CB -> RB ->

M13)
M13 (stacker entrance) drive control signals.

c. Paper alignment (trailing edge alignment)

For operation in staple mode:
The swivel roller adjusts the position of each paper (one
paper at a time) within the stacker.
For operation in booklet mode (FS-108BM only): The sta­pling & folding stopper is moved and set into appropriate
position. The swivel roller adjusts the position of each pa­per (one paper at a time).

FS-34

M5 (Alignment Plate/Upper) Control

Alignment
Plate/Upper

PS5

(Stacker Conveyance

Passage)

M5 (Alignment Plate/Upper)

FS-108/108B

M5DRVA
M5DRVA
M5DRVB
M5DRVB

PS 8IN

PS8IN

GND

24V

24V
M5DRVA
M5DRVA
M5DRVB
M5DRVB

21-A15
21-A16
21-A17
21-A18

21-B26

5V

25-A5
25-A3
25-A1

25-B2
25-B1
25-B6
25-B5
25-B4
25-B3

M5

PS8

24V

5V
SGND
PGND
PGND

TXD

NC

DTR

NC

CTS

NC

RXD

NC

DSR

NC

RTS

NC

MAIN BODY

PS5

MS1

28-6

28-3
28-1

114-1

114-2

114-5

114-3

114-7

114-6

2-9
2-7

4-A15
4-A16
4-A17
4-A18

4-B26

1-A10
1-A28
1-A19

6-1

6-3
6-4
6-5
6-6

7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
7-10
7-11
7-12

FNS CBRB

M5DRVA
M5DRVA
M5DRVB
M5DRVB

PS 8IN

M5 (alignment plate/upper) aligns the paper widthwise in
the stacker by opening and closing the alignment plates/
upper. M5 is controlled by the FNS CB (FNS control board)
via the RB (relay board).

1. Operation
At start-up, the alignment plates/upper are stationary at
the ON position of PS8 (alignment-plate/upper HP). A
specified time period after PS5 (stacker conveyance pas­sage) detects the paper trailing edge, M5 begins rotation
so as to close the plates. After another specified interval it
opens the plates. This cycle repeats for each paper.

5V
PS5IN
GND

24V-IN

5V
SGND
PGND
PGND

RXD
SGND
CTS
SGND
DTR
SGND
TXD
SGND
RTS
SGND
DSR
SGND

2. Signals
a. Input signals

(1) TXD (Main body CB -> FNS CB)

Serial data line; transmits operating status of the main
body’s CB to the FNS CB.

(2) DTR (Main body CB -> FNS CB)

Request to send signal from the main body to the
FNS.

(3) RTS (Main body CB -> FNS CB)

Transmission acknowledgment signal from the main
body to the FNS.

(4) PS5 IN (PS5 -> FNS CB)

Comes ON ([L]) when paper passage is detected at
the stacker entrance.

(5) PS8 IN (PS8 -> RB -> FNS CB)

Detects the position of the upper alignment plates.
[L] when the plates are at home position.

b. Output signals

(1) TXD (FNS CB -> Main body CB)

Serial data line; transmits FNS operating status to
the main body’s CB.

(2) RTS (FNS CB -> Main body CB)

Request to send signal from the FNS to the main
body.

(3) DTR (FNS CB -> Main body CB)

Transmission acknowledgment signal from the FNS
to the main body.

(4) M5 DRV A ,A, B,B (FNS CB -> RB -> M5)

M5 (alignment plate/upper) drive control signals.

FS-35

FS-108/108B

Alignment
Plate/Upper

PS5
(Stacker Conveyance
Passage)

Alignment Plate/
Lower

M5 (Alignment Plate/Upper)

M15 (Alignment Plate/Lower)

M15 (Alignment Plate/Lower) Control (FS-108B only)

PS24

M15

27-3
27-2
27-1

27-4
27-5
27-6
27-7
27-8
27-9

PS24IN
GND

24V
24V
M15DRVA
M15DRVA
M15DRVB
M15DRVB

M15DRVA
M15DRVA
M15DRVB
M15DRVB

PS24IN

22-A5
22-A6
22-A7
22-A8

22-B5

5V

M15 (alignment plate/lower) aligns the stapling-and-fold­ing position by opening and closing the alignment plates/
lower. M15 is controlled by the FNS CB (finisher control
board) via the RB (relay board).

MS1

24V

5V
SGND
PGND
PGND

TXD

NC

DTR

NC

CTS

NC

RXD

NC

DSR

NC

RTS

NC

MAIN BODY

1-A10

PS5IN

GND

5V

1-A28
1-A19

PS5

28-6

28-3
28-1

114-1

114-2

114-5

114-3

114-7

114-6

M15DRVA

5-A5

M15DRVA

5-A6

M15DRVB

5-A7

M15DRVB

5-A8

PS24IN

5-B5

24V-IN

6-1

6-3

2-9
2-7

6-4
6-5
6-6

7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
7-10
7-11
7-12

5V
SGND
PGND
PGND

RXD
SGND
CTS
SGND
DTR
SGND
TXD
SGND
RTS
SGND
DSR
SGND

FNS CBRB

1. Operation
At startup, the alignment plates/lower are stationary at the
ON position of PS24 (alignment plate/lower HP). A speci­fied time period after PS5 (stacker conveyance passage)
detects the paper trailing edge, M15 begins rotation so as
to close the plates. After another specified interval it opens
the plates. This cycle repeats for each paper.

FS-36

2. Signals
a. Input signals

(1) TXD (Main body CB -> FNS CB)

Serial data line; transmits operating status of the main
body’s CB to the FNS CB.

(2) DTR (Main body CB -> FNS CB)

Request to send signal from the main body to the
FNS.

(3) RTS (Main body CB -> FNS CB)

Transmission acknowledgment signal from the main
body to the FNS.

(4) PS5 IN (PS5 -> FNS CB)

Comes ON ( [L]) when paper passage is detected at
the stacker entrance.

(5) PS24 IN (PS24 -> connector board -> FNS CB)

Detects the position of the lower alignment plates.
[L] when the plates are at home position.

b. Output signals

(1) TXD (FNS CB -> Main body CB)

Serial data line; transmits FNS operating status to
the main body’s CB.

(2) RTS (FNS CB -> Main body CB)

Request to send signal from the FNS to the main
body.

(3) DTR (FNS CB -> Main body CB)

Transmission acknowledgment signal from the FNS
to the main body.

(4) M15 DRV A,A,B,B (FNS CB -> RB -> M15)

M15 (alignment plate/lower) drive signals.

FS-108/108B

FS-37

FS-108/108B

PS4
(FIN Entrance
Passage)

PS18 (Roller Shift HP)

M2 (Roller Shift)

Conveyance Slide Shaft

Paper Exit Roller

M2 (Roller Shift) Control

MS1

28-6

24V

SGND
PGND
PGND

TXD

DTR

CTS

RXD

DSR

RTS

MAIN BODY

When running in Sort or Group mode, the FNS carries out
shifting of paper. Shifting is driv en by M2 (roller shift), which
is controlled by the FNS CB (FNS control board).

1. Operation
If operation is in Sort or Group mode, M2 (roller shift) comes
ON a predetermined time period after PS4 (FIN entrance
passage) detects the trailing edge of a paper that needs
to be shifted.
Rotation of M2 starts shifting of the conveyance slide shaft,
while rotation of M1 (FNS conveyance) causes the shaft
to turn, so that shifting and conveyance occur simulta­neously. PS18 (roller-shift HP) comes ON when the shaft
has been fully shifted, causing M2 to go OFF.
A specified time period after PS4 goes off, M2 comes back
ON and returns the conveyance slide shaft to its or iginal
position. PS18 (roller-shift HP) goes OFF when the shaft
has returned all the way, causing M2 to go OFF again.
This operation is repeated as necessary to shift paper as
it moves toward the exit roller.

5V

28-3
28-1

114-1

NC

114-2

NC

114-5

NC

114-3

NC

114-7

NC

114-6

NC

2-9
2-7

6-1

6-3
6-4
6-5
6-6

7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
7-10
7-11
7-12

24V-IN

5V
SGND
PGND
PGND

RXD
SGND
CTS
SGND
DTR
SGND
TXD
SGND
RTS
SGND
DSR
SGND

M2DRV

PS4IN

PS18IN

FNS CB

GND

GND

1-A2

24V

1-B29

5V

1-A11
1-A29
1-A20

5V

1-A5
1-A23
1-A14

M2

PS4

PS18

2. Signals
a. Input signals

(1) TXD (Main body CB -> FNS CB)

Serial data line; transmits operating status of the main
body’s CB to the FNS CB.

(2) DTR (Main body CB -> FNS CB)

Request to send signal from the main body to the
FNS.

(3) RTS (Main body CB -> FNS CB)

Transmission acknowledgment signal from the main
body to the FNS.

(4) PS4 IN (PS4 -> FNS CB)

Comes ON ([L]) when paper passage is detected at
the FNS entrance.

(5) PS18 IN (PS18 -> FNS CB)

Roller-shift position detection signal.
[L]->[H]: Forward position
[H]->[L]: Back position

b. Output signals

(1) TXD (FNS CB -> Main body CB)

Serial data line; transmits FNS operating status to
the main body’s CB.

(2) RTS (FNS CB -> Main body CB)

Request to send signal from the FNS to the main
body.

(3 DTR (FNS CB -> Main body CB)

Transmission acknowledgment signal from the FNS
to the main body.

(4) M2 DRV (FNS CB -> M2)

M2 (roller-shift motor) drive control signal.
[H]: ON
[L]: OFF

FS-38

M7 (Paper Exit Roller) Control

Paper Exit Roller
(Sponge Roller)

PS6 (Paper Exit-1)

M7 (Paper Exit Roller)

PS10 (Paper Exit-2)

PS9 (Paper Exit-Belt HP)

Paper Exit Belt

Paper Exit
Arm

FS-108/108B

GND

21-B27

5V

25-A6
25-A4
25-A2

PS9

PS 9IN

PS9IN

MS1

28-6

24V

SGND
PGND
PGND

TXD

DTR

CTS

RXD

DSR

RTS

2-9

5V

2-7
28-3
28-1

114-1

NC

114-2

NC

114-5

NC

114-3

NC

114-7

NC

114-6

NC

MAIN BODY

The paper exit belt ejects paper from the stacker, while
the paper exit roller ejects the paper from the FNS. M7
(paper exit roller) drives both the belt and the roller. M7 is
controlled by the FNS CB (FNS control board).

4-B27

6-1

6-3
6-4
6-5
6-6

7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
7-10
7-11
7-12

PS 9IN

24V-IN

5V
SGND
PGND
PGND

RXD
SGND
CTS
SGND
DTR
SGND
TXD
SGND
RTS
SGND
DSR
SGND

1-B7

5V

1-B8

M7P/S

M7H/L

M7LD
PGND
PGND

24V
24V

M7F/R

PS4IN

GND

GND

1-B9
1-B10
1-B11
1-B16
1-B17
1-B21
1-B22
1-B12

5V

1-A11
1-A29
1-A20

5V

1-A8
1-A26
1-A17

M7

PS4

PS10

M7CLK

PS10IN

FNS CBRB

1. Operation
a. Sort, Group, and Non-Sort modes

b. Staple mode (flat stapling)

c. Booklet mode

M7 (paper exit roller) starts turning when PS4 (FIN en­trance passage) detects the leading edge of a paper. M7
goes off when PS10 (paper exit 2) detects paper exit of
the paper, unless an FNS start signal has already been
received from the main body.

M7 starts running when stapling is finished, and stops
when PS9 (paper exit belt HP) comes ON.

M7 starts running in reverse when stapling is finished, and
stops when PS9 (paper exit belt HP) comes ON.

FS-39

FS-108/108B

2. Signals
a. Input signals

(1) TXD (Main body CB -> FNS CB)

Serial data line; transmits operating status of the main
body’s CB to the FNS CB.

(2) DTR (Main body CB -> FNS CB)

Request to send signal from the main body to the
FNS.

(3) RTS (Main body CB -> FNS CB)

Transmission acknowledgment signal from the main
body to the FNS.

(4) PS4 IN (PS4 -> FNS CB)

Comes ON ([L]) when paper passage is detected at
the FNS entrance.

(5) PS9 IN (PS9 -> RB -> FNS CB)

Comes ON ([L]) when the paper exit belt is in home
position.

(6) PS10 IN (PS10 -> FNS CB)

Comes ON ( [L]) when paper is detected at the FNS
paper exit.

(7) M7 LD (M7 -> FNS CB)

M7 rotational status detection signal. This signal be­comes [L] when M7 reaches the set speed.

b. Output signals

(1) TXD (FNS CB -> Main body CB)

Serial data line; transmits FNS operating status to
the main body’s CB.

(2) RTS (FNS CB -> Main body CB)

Request to send signal from the FNS to the main
body.

(3) DTR (FNS CB -> Main body CB)

Transmission acknowledgment signal from the FNS
to the main body.

(4) M7 P/S (FNS CB -> M7)

M7 (paper exit roller) drive control signal.
[H]: OFF
[L]: ON

(5) M7 CLK (FNS CB -> M7)

M7 (paper exit roller) speed-adjustment clock signal.

(6) M7 H/L (FNS CB -> M7)

Reference clock signal for controlling the speed of
M7 (paper exit roller).
[H]: Slow
[L]: Fast

(7) M7 F/R (FNS CB -> M7)

M7 (paper exit roller) rotation direction control signal.
[H]: Counterclockwise
[L]: Clockwise

FS-40

SD4 (Paper Exit Opening) Control

Nip Paper
Exit Roller

PS6 (Paper Exit-1)

SD4
(Paper Exit
Opening)

PS10 (Paper
Exit-2)

PS4 (FIN Entrance Roller)

Conveyance Roller C

Conveyance Roller A

Conveyance Roller B

Conveyance Roller D

Paper Exit Roller
(Sponge Roller)

SD4

MS1

28-6

24V

SGND
PGND
PGND

2-9

5V

2-7
28-3
28-1

1-B25
1-A4

6-1

6-3
6-4
6-5
6-6

SD4 DRV
24V

24V-IN

5V
SGND
PGND
PGND

PS6IN

GND

PS10IN

GND

PS12IN

GND

FS-108/108B

5V

1-A9
1-A27
1-A18

5V

1-A8
1-A26
1-A17

5V

1-A7
1-A25
1-A16

PS6

PS10

PS12

114-1

TXD

NC

114-2

DTR

NC

114-5

CTS

NC

114-3

RXD

NC

114-7

DSR

NC

114-6

RTS

NC

MAIN BODY

SD4 (paper exit opening) controls engagement by the nip
paper exit roller. SD4 is controlled by the FNS CB (FNS
control board).

1. Operation
When ejection is not in progress, a gap is maintained be­tween the nip paper exit roller and the paper exit roller so
as to prevent paper jams at the paper e xit. At time of ejec­tion, howev er, SD4 comes ON, inclining the nip paper exit
roller against the paper exit roller so that the gap is closed.

a. SD4 ON timing

(1) Sort, Group, and Non-Sort modes

SD4 comes ON a preset time period after PS10 (pa­per exit 2) detects the leading edge of the sheet.

(2) Staple mode

SD4 comes ON a preset time period following comple­tion of stapling.

7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
7-10
7-11
7-12

RXD
SGND
CTS
SGND
DTR
SGND
TXD
SGND
RTS
SGND
DSR
SGND

FNS CB

(1) Sort, Group, and Non-Sort modes

SD4 goes OFF a preset time period after PS10 (pa­per exit 2) detects the trailing edge of the paper.

(2) Staple mode

SD4 goes OFF a preset time period after PS6 (paper
exit 1) detects the trailing edge of the paper set.

b. SD4 OFF timing

FS-41

FS-108/108B

2. Signals
a. Input signals

(1) TXD (Main body CB -> FNS CB)

Serial data line; transmits operating status of the main
body’s CB to the FNS CB.

(2) DTR (Main body CB -> FNS CB)

Request to send signal from the main body to the
FNS.

(3) RTS (Main body CB -> FNS CB)

Transmission acknowledgment signal from the main
body to the FNS.

(4) PS6 IN (PS6 -> FNS CB)

Comes ON ([L]) when paper passage is detected at
the FNS paper exit.

(5) PS10 IN (PS10 -> FNS CB)

Comes ON ([L]) when paper passage is detected at
the FNS paper exit.

(6) PS12 IN (PS12 -> FNS CB)

Detects open/closed state of the paper exit opening.
[H]->[L]: Closed
[L]->[H]: Open

b. Output signals

(1) RXD (FNS CB -> Main body CB)

Serial data line; transmits FNS operating status to
the main body’s CB.

(2) RTS (FNS CB -> Main body CB)

Request to send signal from the FNS to the main
body.

(3) DTR (FNS CB -> Main body CB)

Transmission acknowledgment signal from the FNS
to the main body.

(4) SD4 DRV (FNS CB -> SD4)

SD4 (paper exit opening) drive control signal.
[H]: OFF
[L]: ON

FS-42

FS-108/108B

M8 (Paper Exit Opening) Control

24V-IN

24V

5V
SGND
PGND
PGND

TXD

NC

DTR

NC

CTS

NC

RXD

NC

DSR

NC

RTS

NC

MAIN BODY

MS1

28-6

28-3
28-1

114-1

114-2

114-5

114-3

114-7

114-6

6-1

2-9
2-7

6-3
6-4
6-5
6-6

7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
7-10
7-11
7-12

5V
SGND
PGND
PGND

RXD
SGND
CTS
SGND
DTR
SGND
TXD
SGND
RTS
SGND
DSR
SGND

M8DRV

PS12IN

FNS CB

M8 (paper exit opening) controls opening and closing of
the paper exit by means of a linkage mechanism. M8 is
controlled by the FNS CB (FNS control board).

1. Operation
If large paper is being stapled, M8 comes on when the
START button ON signal is received, causing the paper
exit to open. Upon completion of stapling, the stapling­completed signal from the FNS CB causes the paper exit
to close, and the stapled set is exited. The status of the
paper exit opening is detected by PS12 (paper exit open­ing).

M8 (Paper Exit Opening)

Paper Exit Opening

24V

GND

1-A1
1-B30

5V

1-A7
1-A25
1-A16

PS12
(Paper Exit
Opening)

M8

PS12

When paper convey­ing to Stacker

Staple (not A4 or B5)

Staple (A4, B5)

Of-fset

Booklet

When Copy
Starts

Open
Closed

Closed

Open

2. Signals
a. Input signals

(1) TXD (Main body CB -> FNS CB)

Serial data line; transmits operating status of the main
body’s CB to the FNS CB.

(2) DTR (Main body CB -> FNS CB)

Request to send signal from the main body to the
FNS.

(3) RTS (Main body CB -> FNS CB)

Transmission acknowledgment signal from the main
body to the FNS.

(4) PS12 IN (PS12 -> FNS CB)

Detects open/closed state of the paper exit opening.
[H]->[L]: Closed
[L]->[H]: Open

b. Output signals

(1) TXD (FNS CB -> Main body CB)

Serial data line; transmits FNS operating status to
the main body’s CB.

(2) RTS (FNS CB -> Main body CB)

Request to send signal from the FNS to the main
body.

(3) DTR (FNS CB -> Main body CB)

Transmission acknowledgment signal from the FNS
to the main body.

(4) M8 DRV (FNS CB -> M8)

M8 (paper exit opening) drive control signal.
[H]: ON
[L]: OFF

Open
Closed

Open

When paper
exit to the tray

Closed
Closed

Closed
Open

FS-43

FS-108/108B

STAPLER UNIT

Composition

PS23 (Stapling and Folding Stopper HP)

M14
(Stapling and
Folding Stopper)

Clincher-F

Flat-Stapling Stopper

M11 (Stapler Movement)

Cincher-R

Flat-Stapling Stopper

M4 (Stapler Rotation)

M17
(Stapling and Folding Stopper)

Stapling and Folding Stopper

Stapler-R

PS14 (Stapler Rotation HP)

PS11 (Stapler Movement)

Stapler-F

FS-44

FS-108/108B

M11 (Stapler Movement)

M4

(Stapler Rotation)

Mechanism

1. Single staple (front)
Stapler F and clincher F move to the staple position, driven
by M11 (stapler movement). After moving into position,
thy staple the stacked paper.

M11 (Stapler Movement)

2. Single staple (rear)
Stapler R and clincher R slide into the staple position. M1 1
(stapler movement) and M4 (stapler rotation) control the
motion.
Stapler R and clincher R rotate and move to the staple
position.
Rotation is driven by M4 (stapler rotation).
Stapler R and clincher R staple the stacked paper.

FS-45

FS-108/108B

Clincher-R

M4

(Stapler Rotation)

Stapler-R

Stapler-F

Clincher-F

M11 (Stapler Movement)

M17 (Stapling and Folding Stopper release)

M14

(Stapling and Folding

Stopper)

3. Two staples (flat)
Stapler F, stapler R, clincher F, and clincher R move into
position and staple the stacked paper in two locations.
Stapler F and clincher F are driven by M1 1 (stapler move­ment). Stapler R and clincher R are driven by M11 and M4
(stapler rotation).

M11 (Stapler Movement)

M4

(Stapler Rotation)

4. Two staples (staple & fold) (FS-108BM only)
Stapler F, stapler R, clincher F, and clincher R move into
position.
Paper is transported to the stapling and folding stopper,
and then aligned by the action of the upper and lower align­ment plates. The paper is then stapled in two locations.
Stapler F and clincher F are driven by M11 (stapler move­ment). Stapler R and clincher R are driven by M11 and M4
(stapler rotation).

FS-46

FS-108/108B

5. Operation of the flat stapling and stapling and
folding stopper (FS-108B only)
The flat stapling stopper is held set while the stapling and
folding stopper unit is at home position. The flat stapling
stopper is released by a spring when the stapling and fold­ing stopper unit is moved out of home position by the ac­tion of M14 (stapling and folding stopper).

M14

Spring

PS23
(Stapling and
Folding Stopper
HP)

Flat-Stapling Stopper

Staple position

(Stapling and Folding
Stopper)

Stapling and
Folding Stopper Unit

Stapling and
Folding Stopper

For stapling and folding operation: Paper is transported
up to the stapling and folding stopper for stapling. When
stapling is completed, M17 releases the stopper and the
paper set moves to the folding unit. Setting and releasing
of the stopper is repeated for each paper set.
Return of the staple paper end stopper to home position
resets the flat stapling stopper.

Staple position

When the stapling and folding stopper unit has moved
into the predetermined position, it is set in place by M17
(stapling and folding stopper release).

M17 (Stapling and Folding Stopper Release)

Stapling and Folding Stopper

Released

Set

FS-47

FS-108/108B

Clincher (F, R)

PS30 (Clincher-HP/R)
PS33 (Clincher-HP/F)

M21 (Clincher/R)
M23 (Clincher/F)

Stapler (F, R)

M22 (Stapler/R)
M24 (Stapler/F)

SW1 (Cartridge/R Detection/R)
SW3 (Cartridge/F Detection/F)

SW2 (Staple Detection/R)
SW4 (Staple Detection/F)

PS31 (Stapler-HP/R)
PS34 (Stapler-HP/F)

PS32 (Clincher Timing/R)
PS35 (Clincher Timing/F)

6. Stapling operation
Each stapler houses a stapler motor, and each clincher
houses a clincher motor. Motors M24 (stapler/F) and M22
(stapler/R) eject the staples, while motors M23 (clincher/
F) and M21 (clincher/R) bend the staples.

Eject staple.

Bend staple.

Close staple.

Clincher

Stapler

Clincher

Stapler

SW1 (cartridge R detection) and SW3 (cartridge F detec­tion) detect presence (and correct setting) or absence (or
improper setting) of the respective staple cartridges. SW2
(staple detection/R) and SW4 (staple detection/F) come
ON when the amount of staples in the respective cartridge
runs low.

The timing for staple clinching is controlled by stapler-in­ternal sensors PS32 (clincher timing/R) and PS35 (clincher
timing/F). Switching ON of PS32 and PS35 causes mo­tors M21 and M23 (within the clinchers) to operate, initiat­ing the clinch action.
Motor M11 (stapler movement) controls the movement (dis­placement) of both staplers and both clinchers, while mo­tor M4 (stapler rotation) controls the rotation of stapler-R
and clincher R. PS11 (stapler movement HP) detects sta­pler movement (displacement), and PS14 (stapler rota­tion HP) detects stapler rotation.

FS-48

FS-108/108B

Screw

Connector

Connector

Clincher

Disassembly and Reassembly

CAUTION: Be sure that the power cord has been un-

plugged from the outlet.

1. Exchanging the clincher
a. Procedure

(1) Remove the front cover.
(2) Pull out the stacker/slider unit by pulling on the

handle.

(3) Remove the 2 rail stopper set screws.

Rail Stopper Screw

(5) Detach the connector from the clincher you wish to

replace, and remove the 4 set screws holding the
clincher in place.

(6) Lift the clincher up and out.

Stacker/Stapler Unit

Rail Stopper Screw

(4) Remove the 4 set screws holding the cover in place,

and remove the cover.

Screws

Cover

Screws

(7) To install the new clincher, carry out the above se-

quence in reverse.

(8) Adjust the stapler vertical positioning. (See page 1-

81, Adjusting the Stapler Vertical Positioning”).

FS-49

FS-108/108B

Stapler

2. Removing and Reinstalling a Stapler

a. Procedure

(1) Remove the front cover.
(2) Pull out the stacker/slider unit by pulling on the

handle.
(3) Remove the cartridge from the stapler.
(4) Remove the set screw holding the connector cover

in place, and remove the connector cover.

Screw

Cover

(6) Lift the stapler slightly and remove it.

(7) Reinstall in the opposite sequence to removal.
(8) Adjust the stapler vertical positioning. (See page 1-

81, Adjusting the Stapler Vertical Positioning”).

(5) Detach the stapler connector (if stapler R, CN-202; if

stapler F , CN-204), and remove the 4 set screws hold-

ing the stapler in place.

Screws

(If Stapler-R, Connector CN-202
If Stapler-F, Connector CN-204)

Connector

FS-50

3. Clearing a Stapler Jam
a. Procedure

(1) Open the front cover.
(2) Pull out the stacker/ slider unit by pulling on the

handle.

(3) Remove the cartridge from the stapler.

Cartridges

FS-108/108B

(4) Raise the cartridge cover.
(5) Remove the jammed staple(s).

Cover

Cartridge

(6) Reinstall in the opposite sequence to removal.

FS-51

FS-108/108B

Stapler Control

PS31

PS32

SW1

SW2

M22

PS30

M21

PS34

PS35

SW3

SW4

M24

PS33

M23

5V
PS31IN
GND

5V
PS32IN
GND

5V
5V IN

5V
5V IN

M22DRV F
M22DRV R

5V
PS30IN
GND

M21DRV F
M21DRV R

5V
PS34IN
GND

5V
PS35IN
GND

5V
5V IN

5V
5V IN

M24DRV F
M24DRV R

5V
PS33IN
GND

M23DRV F
M23DRV R

/RESET

SPCH
SNCH

/SHOME

/READY

/BUSY

/CLRREQ

/START

/CLR

SPCH
SNCH

/SHOME

/RESET

SPCH
SNCH

/SHOME

/READY

/BUSY

/CLRREQ

/START

/CLR

SPCH
SNCH

/SHOME

PS24

201-A9
201-A10
201-A11
201-B1
201-B5
201-B6
201-B7
201-B8
201-B9

202-B3
202-B4
202-B6

203-A9
203-A10
203-A11
203-B1
203-B5
203-B6
203-B7
203-B8
203-B9

204-B3
204-B4
204-B6

24-A7
24-B5
24-B6
24-B8
24-A11
24-B1
24-B2
24-B3
24-B4

23-A4
23-A3
23-A1

28-A7
28-B6
28-B7
28-B9
28-B1
28-B2
28-B3
28-B4
28-B5

23-B14
23-B15
23-B17

27-3
27-2
27-1

/RESET
SPCH
SNCH
/SHOME
/READY
/BUSY
/CLRREQ
/START
/CLR

SPCH
SNCH
/SHOME

/RESET
SPCH
SNCH
/SHOME
/READY
/BUSY
/CLRREQ
/START
/CLR

SPCH
SNCH
/SHOME

5V
PS24IN
GND

/RESET

/READY

/CLRREQ

/START

/RESET

/READY

/CLRREQ

/START

PS11IN
PS14IN

M14DRVA
M14DRVA
M14DRVB
M14DRVB

M17_12V

M17_CONT

PS21IN
PS23IN
PS24IN

PS11IN

PS14IN

M4DRVA
M4DRVA
M4DRVB
M4DRVB

M11DRVA
M11DRVA
M11DRVB
M11DRVB

M14DRVA

M14DRVA
M14DRVB
M14DRVB

M17DRV

RB

/BUSY

/CLR

/BUSY

GND

GND

24V
24V

24V
24V

24V
24V

12V

26-A3
26-A2
26-A1

26-B5
26-B6
26-B7

21-B1
21-B5
21-B6
21-B7
21-B8
21-B9

21-B13
21-B17
21-B18
21-B19
21-B20

21-B28
21-B29

22-A1
22-A2
22-A3
22-A4
22-B1
22-B2
22-B3
22-B4
22-B5

5V

25-B8
25-B10
25-B12

5V

24-B11
24-B10
24-B9

23-A11
23-A12
23-A13
23-A14
23-A15
23-A16

23-B7
23-B6
23-B5
23-B4
23-B3
23-B2

26-B4
26-B3
26-A4
26-A5
26-A6
26-A7

117-2
117-1

5V

PS21IN

GND

5V

PS23IN

GND

PS11

PS14

M4

M11

M14

M17

PS21

PS23

24V

5V
SGND
PGND
PGND

TXD

NC

DTR

NC

CTS

NC

RXD

NC

DSR

NC

RTS

NC

MAIN BODY

MS1

28-6

28-3
28-1

114-1

114-2

114-5

114-3

114-7

114-6

2-9
2-7

4-B1
4-B5
4-B6
4-B7
4-B8
4-B9

4-B13
4-B17
4-B18
4-B19
4-B20

4-B28
4-B29

5-A1
5-A2
5-A3
5-A4
5-B1
5-B2
5-B3
5-B4
5-B5

6-1

6-3
6-4
6-5
6-6

7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
7-10
7-11
7-12

R/RESET
R/READY
R/BUSY
R/CLRREQ
R/START
R/CLR

F/RESET
F/READY
F/BUSY
F/CLRREQ
F/START

PS11IN
PS14IN

M14DRVA
M14DRVA
M14DRVB
M14DRVB
M17_12V
M17_CONT
PS21IN
PS23IN
PS24IN

24V-IN

5V
SGND
PGND
PGND

RXD
SGND
CTS
SGND
DTR
SGND
TXD
SGND
RTS
SGND
DSR
SGND

FNS CB

M11 (stapler movement) and M4 (stapler rotation) move
the stapler(s) and clincher(s) into position in accordance
with the selected stapling mode. Once in position, the
stapler(s) and clincher(s) execute stapling. A single sta­pling cycle is detected by ON-OFF-ON activation of the
various stapler and clincher home position sensors; spe­cifically: PS31 (stapler HP/R), PS34 (stapler HP/F), PS30
(clincher HP/R), and PS33 (clincher HP/F). Operation is
controlled by the FNS CB (FNS control board) via the RB
(relay board).

1. Operation
a. Single staple movement control (front)

M11 (stapler movement) comes ON when the main body
issues the STAR T button ON signal, moves stapler F and
clincher F to the predetermined positions, and then stops.
When single staple mode is completed, M11 moves the
staplers and clinchers back to the ON position of PS11
(stapler movement HP) and then stops.

FS-52

FS-108/108B

b. Single-staple movement control (rear)

M11 (stapler movement) and M4 (staple rotation) come
ON when the main body issues the STAR T button ON sig­nal, move stapler-R and clincher R to the predetermined
positions, and then stop. When single staple mode is com­pleted, M1 1 and M4 move the stapler and clincher back to
the PS11 (stapler movement HP) and PS14 (stapler rota­tion HP) ON positions, and then stop.

c. Two-staple movement control

M11 (stapler movement) and M4 (staple rotation) come
ON when the main body issues the STAR T button ON sig­nal, move the staplers and clinchers to the predetermined
positions, and then stops. When two staple mode is com­pleted, M1 1 and M4 moves the staplers and clinchers back
to the ON position of PS11 (stapler movement HP) and
then stops.

d. Control of the stapling-and-folding stopper

(stapling & folding) (FS-108B only)
On receipt of the START button ON signal, the stapling­and-folding stopper is moved and set into position. M14
(stapling and folding stopper) moves the stopper into po­sition, and M17 (stapling and folding stopper release) sets
it. When stapling action is completed, M17 releases the
stopper and the papers move to the folding unit. Setting
and releasing of the stopper is repeated for each paper
set (each set of papers).
When PS25 (folding exit) detects exiting of the final paper
set, M14 returns the stopper to its home position. Arrival
at home position is detected by P23 (stapling and folding
stopper HP).

f. Stapler action control

Upon closing of the alignment plates/upper and alignment
plates/lower (if booklet mode), M22 (stapler/R) and M24
(staple/F) come ON, causing the staple eject plates to be­gin stapling. As the stapling operation progresses, sta­pler-internal sensors PS32 (clincher timing/R) and PS35
(clincher timing/F) come ON, causing clincher-internal
motors M21 (clincher/R) and M23 (clincher/F) to come ON,
thereby initiating the clinching action.
Staple action is completed when the following HP sensors
have come ON, detecting home positions: PS31 (stapler
HP/R), PS34 (stapler HP/F), PS30 (clincher HP/R), and
PS33 (clincher HP/F).
A staple jam condition is detected if PS31, PS34, PS30,
or PS33 fails to come back ON within a preset time period
after going OFF. M22, M24, M21, and M23 turn in reverse
until the corresponding components have returned to home
position (until PS31, PS34, PS30, and PS33 come ON).
Control of these operations is implemented by the FNS
CB (FNS control board) via the RB (relay board).

g. Cartridge detection

Stapler-internal switches SW1 (cartridge detection/R) and
SW3 (cartridge detection/F) detect the presence or ab­sence of the respective cartridge. The switch outputs an
error signal if the cartridge is missing or is improperly set.

h. Staple-low detection

SW2 (staple detection/R) or SW4 (staple detection/F)
comes ON and outputs an error signal when the amount
of staples in the respective cartridge runs low.

e. Control of the stapler paper-end stopper (folding) (FS-

108BM only)
On receipt of the START button ON signal, the stapling­and-folding stopper is moved and set into position. M14
(stapling and folding stopper) moves the stopper into po­sition, and M17 (stapling and folding stopper release) sets
it.
A preset period after PS5 (stacker conveyance passage)
detects the final paper set, M17 releases the stopper and
the papers move to the folding unit. Setting and releasing
of the stopper is repeated for each paper set.
A preset period after PS25 (folding exit) detects the pas­sage of the final paper set, M14 returns the stopper to its
home position. Arrival at home position is detected by P23
(stapling and folding stopper HP).

FS-53

FS-108/108B

2. Signals
a. Input signals

(1) TXD (Main body CB −> FNS CB)

Serial data line; transmits operating status of the main
body’s CB to the FNS CB.

(2) RTS (Main body CB −> FNS CB)

Request to send signal from the main body to the
FNS.

(3) DTR (Main body CB −> FNS CB)

Transmission acknowledgment signal from the main
body to the FNS.

(4) PS11 IN (PS11 −> RB −> FNS CB)

ON (L) when staplers are in home position with re­spect to displacement.

(5) PS14 IN (PS14 −> RB −> FNS CB)

ON (L) when stapler R is in home position with re­spect to rotation.

(6) PS21 IN (PS21 −> RB −> FNS CB)

ON (L) when the stapling and folding stopper is re­leased.

(7) PS23 IN (PS23 −> RB −> FNS CB)

ON (L) when the stapling and folding stopper is in
home position.

(8) PS24 IN (PS24 −> RB −> FNS CB)

ON (L) when the lower alignment plates are in home
position.

(9) PS30 IN (PS30 −> RB −> FNS CB)

ON (L) when clincher R is in position for clinching.

(10) PS31 IN (PS31 −> RB −> FNS CB)

ON (L) when stapler R is in position for stapling.

(11) PS32 IN (PS32 −> RB −> FNS CB)

Comes ON (H) at time when clincher R must begin
clinching operation.

(12) PS33 IN (PS33 −> RB −> FNS CB)

ON (L) when clincher F is in position for clinching.

(13) PS34 IN (PS34 −> RB FNS CB)

ON (L) when stapler F is in position for stapling.

(14) PS35 IN (PS35 −> RB −> FNS CB)

Comes ON (H) at time when clincher F must begin
clinching operation.

(15) SW1 IN (SW1 −> RB −> FNS CB)

Comes ON and inputs an error code if the stapler R
cartridge is missing or improperly set.

(16) SW2 IN (SW2 −> RB −> FNS CB)

Comes ON and inputs an error code if stapler R is
empty of staples.

(17) SW3 IN (SW3 −> RB −> FNS CB)

Comes ON and inputs an error code if the stapler F
cartridge is missing or improperly set.

(18) SW4 IN (SW4 −> RB −> FNS CB)

Comes ON and inputs an error code if stapler F is
empty of staples.

(19) RESET (Main body CB −> FNS CB −> RB)

Stops all operation and clears error code.

(20) START (Main body CB −> FNS CB −> RB)

Request for stapling, from main body to FNS.

(21) CLR (Main body CB −> FNS CB −> RB)

Request to clear error code and return staplers to home
position.

b. Output signals

(1) TXD (FNS CB −> Main body CB)

Serial data line; transmits FNS operating status to the
main body’s CB.

(2) RTS (FNS CB −> Main body CB)

Request to send signal from the FNS to the main body.

(3) DTR (FNS CB −> Main body CB)

Transmission acknowledgment signal from the FNS to
the main body.

(4) M4 DRV A, A, B, B (FNS CB −> RB −> M4)

M4 (stapler R) drive signals.

(5) M1 1 DRV A, A, B, B (FNS CB −> RB −> M11)

M11 (stapler movement) drive control signals.

(6) M14 DRV A, A, B, B (FNS CB −> RB −> M14)

M14 (stapler movement) drive control signals.

(7) M17 DRV A, A, B, B (FNS CB −> RB −> M17)

M17 (stapler movement) drive control signals.

(8) M21 DRV F, R (FNS CB −> RB −> M21)

M21 (clincher drive) drive control signals.

(9) M22 DRV F, R (FNS CB −> RB −> M22)

M22 (staple drive) drive signals.

(10) M23 DRV F, R (FNS CB −> RB −> M23)

M23 (clincher drive) drive control signals.

(11) M24 DRV F, R (FNS CB −> RB −> M24)

M24 (staple drive) drive signals.

(12) BUSY (RB −> FNS CB −> Main body CB)

Outputs [L] while staple operation is in progress.

(13) READY (RB −> FNS CB −> Main body CB)

Outputs [L] when stapling system is prepared to begin
stapling.

(14) CLRREQ (RB −> FNS CB −> Main body CB)

CLR request from the FNS to the main body..

(15) EC00, EC01, EC02 (RB −> FNS CB −> Main body CB)

Error codes transmitted from the FNS to the main body.

FS-54

MAIN TRAY SECTION

Screws

Slide Stopper

Up-Down Stay

FS-108/108B

Composition

Main Tray

PS15

(Tray No-Paper

Detection)

Wire

M3 (Tray Up-Down)

Pulley

Gear Box

Worm Gear

Pulley

PS3 (Tray Lower Limit)

Up-Down Shaft

Mechanism

1. Raising and lower (Main tray up-down)
The rotation of the tray up-down motor (M3) turns the worm
gear on the motor’s shaft. The rotational force propagates
through the gear box and turns the up-down shaft, thereby
turning the pulleys fixed to the ends of the shaft (one pul­ley at each end). The wires attached to the pulleys cause
the tray to move up and down.
Clockwise turning of the M3 worm gear generates upward
tray movement, while counterclockwise turning generates
downward movement.

(3) Remove the two slide stoppers (removing one screw

at each stopper).

(4) Slide the up-down stay upward to remove it.

Disassembly and Reassembly

1. Removing and Reinstalling the Up-Down Stay

a. Procedure

CAUTION: Be sure that the power cord has been un-

plugged from the outlet.

(1) Remove the following parts.

• Rear cover

• Front cover

• Front side cover

• Main tray

(2) With the up-down stay and exit-stopper plate in con-

tact, remove the exit-stopper plate. (See “Removing
and Reinstalling the Exit Stopper Plate.”)

(5) Reinstall the stay in the opposite sequence to re-

moval.

FS-55

FS-108/108B

Two Winds

Short Wire

Two Winds

E-ring

Upper Pulley

1. Exchanging the up-down wire
a. Procedure

CAUTION: The following procedure shows replacement of

the rear wire removal of the front wire is similar,
but relationships are inverted (mirror image).

(1) Remove the following parts.

• Rear cover

• Front cover

• Front side cover

• Main tray

(2) Remove the 4 wire-bracket set screws (2 screws at

the front wire bracket and 2 screws at the rear wire
bracket), and take off the up-down stay.

Screws

Up-Down Stay

Wire Bracket (front)

(3) Remove the e-ring and the lower up-down pulley , and

remove the wire you are replacing.

CAUTION: There is a pin located in the inside of the pulley.

Take care to avoid losing the pin when removing
the pulley.

(4) Move the up-down stay as necessary so that front

inner wire (the shorter side from the wire bracket) is
wound twice around the pulley.

(5) Wind the shorter side of the rear wire (relative to the

wire bracket) twice around the up-down pulley.

(6) Adjust the wire bracket position so that it is even with

the front wire bracket. Insert the pin, and then fasten
the pulley into place with the e-ring.

(7) Fit the wire onto the upper pulley.

Wire

E-ring

Lower Up-Down Pulley

FS-56

FS-108/108B

(8) Wind the opposite side of the wire (the long side)

from the inside of the up-down pulley toward the out­side, and secure the wire end in place.

Long Wire

Wire End

(9) Press down on the up-down stay and refasten the 4

wire bracket set screws.

Wire
Bracket

Press down.

Wire
Bracket

(10) Loosen the two belt tensioner set screws.
(11) Using a tension gauge or spring balance, pull the

belt tensioner so that tension A is at the value indi­cated below. Maintain this tension while retightening
the screws.
Spec value for tension: A = 2.5±0.1kg

(12) Reinstall the wire in the opposite sequence to re-

moval.

Screws

Screws

Up-Down Stay

FS-57

FS-108/108B

PS6 (Paper Exit-1)

PS10 (Paper Exit-2)

PS2

(Tray Upper Limit)

PS3

(Tray Lower Limit)

Main T ra y

PS9 (Paper Exit
Belt HP)

PS7
(Staple Paper Upper Limit)

PS15

(Tray No-Paper

Detection)

M3 (Tray Up-Down)

Main Tray Up/Down Control

M3DRV-F
M3DRV-R

PS2IN

GND

PS3IN

PS15IN

PS10IN

FNS CB

GND

PS7IN

GND

GND

PS6IN

GND

GND

MS1

24V

5V
SGND
PGND
PGND

TXD

NC

DTR

NC

CTS

NC

RXD

NC

DSR

NC

RTS

NC

MAIN BODY

28-6

28-3
28-1

114-1

114-2

114-5

114-3

114-7

114-6

24V-IN

6-1

5V

2-9
2-7

6-3
6-4
6-5
6-6

7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
7-10
7-11
7-12

SGND
PGND
PGND

RXD
SGND
CTS
SGND
DTR
SGND
TXD
SGND
RTS
SGND
DSR
SGND

b. Staple mode (flat stapling)

M3 starts lowering the stray a preset period after M7 (pa­per exit roller) comes ON. When PS6 (paper exit 1) de-

2-1
2-2

5V

3-B6
3-A1
3-A5

5V

3-B5
3-A2
3-A6

5V

3-B4
3-A3
3-B2

5V

3-B3
3-A4
3-B1

1-A9

5V

1-A27
1-A18

5V

1-A8
1-A26
1-A17

M3

PS2

PS3

PS7

PS15

PS6

PS10

tects the trailing edge of the stapled set, M3 begins raising
the tray, and continues to raise it until PS7 (staple paper
upper limit) comes on.

M3 (tray up-down) driv es the main tray up and down. Clock­wise rotation drives the tray up; counterclockwise rotation
drives it down. M3 is controlled by the FNS CB (FNS con­trol board).

1. Operation
a. Sort, Group, and Non-Sort modes

M3 (tray up-down) begins lowering the tray when PS10
(paper exit-2) detects the passage of paper. It lowers the
tray until PS2 (tray upper limit) goes OFF, then raises it
until PS2 comes ON, and then stops.

PS6 (Paper Exit-1)

PS10 (Paper Exit-2)

Main T ra y

PS7
(Staple Paper Upper Limit)

PS2 (Tray Upper Limit)

PS15
(Tray No-Paper Detection)

PS3 (Tray Lower Limit)

M3 (Tray Up-Down)

FS-58

2. Signals
a. Input signals

(1) TXD (Main body CB −> FNS CB)

Serial data line; transmits operating status of the main
body’s CB to the FNS CB.

(2) DTR(Main body CB −> FNS CB)

Request to send signal from the main body to the
FNS.

(3) RTS(Main body CB −> FNS CB)

Transmission acknowledgment signal from the main
body to the FNS.

(4) PS2 IN (PS2 −> FNS CB)

ON (H) when the main tray is at the upper limit posi­tion.

(5) PS3 IN (PS3 −> FNS CB)

ON (L) when the main tray is at the lower limit posi­tion.

(6) PS6 IN (PS6 −> FNS CB)

ON ([L]) when paper passage is detected at the FNS
exit.

(7) PS7 IN (PS7 −> FNS CB)

ON ([L]) at paper ejection

(8) PS10 IN (PS10 −> FNS CB)

ON (L) at paper ejection.

(9) PS15 IN (PS15 −> FNS CB)

ON (L) when the main tray is at the upper limit. Re­sets the tray paper counter.

FS-108/108B

b. Output signals

(1) TXD (FNS CB −> Main body CB)

Serial data line; transmits FNS operating status to
the main body’s CB.

(2) RTS (FNS CB −> Main body CB)

Request to send signal from the FNS to the main body.

(3) DTR (FNS CB −> Main body CB)

Transmission acknowledgment signal from the FNS
to the main body.

(4) M3 DRV-F (FNS CB −> M3)

M3 (tray up-down) forward drive control signal.

(5) M3 DRV-R (FNS CB −> M3)

M3 (tray up-down) reverse drive control signal.

FS-59

FS-108/108B

FOLDING UNIT (FS-108B ONLY)

Composition

Folding Conveyance Rollers

PS26 (Folding Passage PS/2)

Pressure Roller A

Pressure Roller B

Folding Conveyance Belts

M18 (Folding Stopper)

PS28 (Folding Passage)

Folding Stopper

PS27 (Folding Stopper HP)

Foldingd Roller A

Pressure Spring

Fold Spring

Folding Roller B

PS29 (Folding Full Up)

PS25 (Folding Paper-Exit Lower Detection)

M19 (Folding Knife)

M20 (Folding Conveyance)

PS22 (Folding Knife HP)

FS-60

FS-108/108B

Mechanism

1. Folding operation
M18 (folding stopper) moves the folding stopper into the predetermined position. M20 (folding conveyance) drives the folding
conveyance rollers and conveyance belt so as to transport the paper up to this stopper.
M19 (folding knife) drives the folding knife. Paper is folded over by the action of the knife and folding rollers, and the fold is
pressurized by the action of the folding rollers and the pressure rollers. M20 drives the folding rollers and pressure rollers so as
to eject the folded paper set into the booklet tray.

Pressure Roller A

Folding Roller A

Folding
Conveyance Roller

Pressure Roller B

Folding Roller B

Booklet Tray

M18 (Folding Stopper)

Folding Stopper

Folding Knife

Folding
Conveyance Belt

M19 (Folding Knife)

M20 (Folding Conveyance)

FS-61

FS-108/108B

Screw

Plate

Plate

Disassembly and Reassembly

1. Removing and Reinstalling the Folding Unit
a. Procedure

(1) Remove the plate on the fold exit side.
(2) Remove the rear cover.
(3) Remove 4 set screws at the rear, as illustrated be-

low.

Screw

(5) Remove the two plates from the booklet exit (one plate

on each side).

(6) Remove 7 set screws at the front.
(7) Pull the folding unit out and off.

CAUTION: Be careful to keep the unit clear of the up/down

wires when removing it.

(4) Detach 3 connectors.

Connector

CAUTION: Be careful to keep the harness from catching on

the FNS body.

Folding Unit

Connector

Connector

Screws

(8) Reinstall the unit in the opposite sequence to removal.

CAUTION: When reinstalling the folding unit, take care to

keep the connectors and harness from getting
caught between the unit and the FNS body.

FS-62

2. Removing and Reinstalling the Adjustment Cover
a. Procedure

(1) Use a stubby screwdriver to remove the set screw

holding the cover in place, and take the cover off.

FS-108/108B

Adjustment Cover

Screw

FS-63

FS-108/108B

Folding Unit Control

24V

24V
M18DRVA
M18DRVA
M18DRVB
M18DRVB

9-A5
9-A6
9-A1
9-A2
9-A3
9-A4

M18

MS1

24V

5V
SGND
PGND
PGND

TXD

NC

DTR

NC

CTS

NC

RXD

NC

DSR

NC

RTS

NC

MAIN BODY

28-6

28-3
28-1

114-1

114-2

114-5

114-3

114-7

114-6

24V

24V
PGND
PGND

GND

GND

GND

GND

GND

GND

8-11
8-12

8-1

5V

8-2
8-3
8-4
8-5
8-6
8-7
8-8
8-9
8-10

5V

9-B12
9-A7
9-B6

5V

9-B11
9-A8
9-B5

5V

9-B4
9-A9
9-B10

5V

9-B9
9-A10
9-B3

5V

9-B8
9-A11
9-B2

5V

9-B7
9-A12
9-B1

M19

M20

PS22

PS25

PS26

PS27

PS28

PS29

M19DRVA
M19DRVB

M20BRK

M20CONT

M20CLK

M20PLL

M20F/R

6-1

2-9
2-7

6-3
6-4
6-5
6-6

7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
7-10
7-11
7-12

24V-IN

5V
SGND
PGND
PGND

RXD
SGND
CTS
SGND
DTR
SGND
TXD
SGND
RTS
SGND
DSR
SGND

PS22IN

PS25IN

PS26IN

PS27IN

PS28IN

PS29IN

FNS CB

M18 (folding stopper) drives the folding stopper in accor­dance with the paper size. M20 (folding con vey ance) trans­ports the paper into position for folding. Folding is imple­mented by the action of the folding knife and the folding
rollers.
The folding rollers and pressure rollers apply pressure to
the folded paper set while at the same time exiting it to the
booklet tray.
The folding knife is driven by M19 (folding knife).

1. Operation
On receipt of the START button ON signal from the main
body , M18 (f olding stopper) mov es the f olding stopper into
the predetermined position.
Upon completion of paper stapling, M20 (folding convey­ance) starts up and drives the folding conveyance rollers
and folding conveyance belt so as to transport the stapled
paper set up to the stopper.
Switching ON of PS28 (folding passage/1) causes M20 to
stop and M19 (folding knife) to start. The paper is folded
by the folding knife and folding rollers A and B.

Upon completion of folding, M20 starts again, driving fold­ing rollers and pressure rollers so as to exit the folded set
into the booklet tray.
When PS25 (folding exit) detects exiting of the paper set,
M20 stops and M18 moves the folding stopper to its home
position, stopping when PS27 (folding stopper HP) comes
ON.
Control of these operations is implemented by the FNS
CB (FNS control board).

FS-64

FS-108/108B

2. Signals
a. Input signals

(1) TXD (Main body CB −> FNS CB)

Serial data line; transmits operating status of the main
body’s CB to the FNS CB.

(2) DTR (Main body CB −> FNS CB)

Request to send signal from the main body to the
FNS.

(3) RTS (Main body CB −> FNS CB)

Transmission acknowledgment signal from the main
body to the FNS.

(4) PS22 IN (PS22 −> FNS CB)

Home-position detection signal for the folding knife.
[L] when the knife is in home position.

(5) PS25 IN (PS25 −> FNS CB)

Comes ON ([L]) when paper is ejected.

(6) PS26 IN (PS26 −> FNS CB)

Comes ON ([L]) when paper passage is detected.

(7) PS27 IN (PS27 −> FNS CB)

Home-position detection signal for the folding stop­per. [L] when the stopper is in home position.

(8) PS28 IN (PS28 −> FNS CB)

Comes ON ([L]) when paper passage is detected.

(9) PS29 IN (PS29 −> FNS CB)

Comes ON ([L]) when paper-full condition is detected.

(10) M20 PLL (M20 −> FNS CB)

Monitors rotation status of M20 (folding conveyance).
[L] indicates that M20 has reached operational speed.

(9) M20 F/R (FNS CB −> M20)

M20 (folding conveyance) rotation direction signal.

[H]: Counterclockwise
[L]: Clockwise

b. Output signals

(1) TXD (FNS CB −> Main body CB)

Serial data line; transmits FNS operating status to
the main body’s CB.

(2) RTS (FNS CB −> Main body CB)

Request to send signal from the FNS to the main body.

(3) DTR (FNS CB −> Main body CB)

Transmission acknowledgment signal from the FNS
to the main body.

(4) M18 DRV A / M18 DRV B (FNS CB −> M18)

M18 (folding stopper) drive control signals.

(5) M19 DRV A, A, B, B (FNS CB −> M19)

M19 (folding knife) drive control signals.

(6) M20 BRK (FNS CB −> M20)

M20 (folding conveyance) brake signal.

[H]: OFF
[L]: ON

(7) M20 CONT (FNS CB −> M20)

M20 (folding conveyance) drive control signal.

[H]: OFF
[L]: ON

(8) M20 CLK (FNS CB −> M20)

Reference clock signal for controlling the speed of
M20 (folding conveyance).

FS-65

FS-108/108B

FS-108/108B ADJUSTMENTS

Adjusting the Magnets on Conveyance

Guide Plate B

1. Tool used

• Phillips head screwdriver

2. Preparation
(1)Open the front cover.
(2)Check whether conveyance guide plate B makes con-

tact with the cushioning rubber when the magnets
are stuck to conveyance guide plate A.

(3)If plate B does not make contact with the cushioning

rubber, remove the rear cover and carry out adjust­ment as described below.

3. Adjustment Procedure
(1)Detach all FNS CB (FNS control board) connectors.
(2)Remove the 2 set screws holding the FNS CB in

place. Remove the FNS CB together with its bracket.

Bracket

FNS CB (Finisher Control Board)

(4)Remove the e-ring and the gear.
(5)Adhere the magnets to conveyance guide plate A and

retighten the set screws.

Magnet

(rear)

Magnet

(front)

Gear

E-ring

Conveyance

Guide Plate B

(5)Reassemble in opposite sequence to removal.

Conveyance

Guide Plate A

Screws

(3)Loosen the 4 magnet holding set screws (two at the

front and two at the back), and move conveyance
guide plate B all the way in the direction indicated by
the arrow.

FS-66

FS-108/108B

Magnet

(rear)

Magnet

(front)

Conveyance Guide Plate C

Conveyance

Guide Plate D

Adjusting the Magnets on Conveyance

Guide Plate C

1. Tool used

• Phillips head screwdriver

2. Preparation
(1) Open the front cover.
(2) Check whether conveyance guide plate C makes con-

tact with the cushioning rubber when the magnets
are stuck to conveyance guide plate D.

(3) If plate C does not make contact with the cushioning

rubber, remove the rear cover and carry out adjust­ment as described below.

3. Adjustment Procedure
(1) Detach all FNS CB (FNS control board) connectors.
(2) Remove the 2 set screws holding the FNS CB in

place. Remove the FNS CB together with its bracket.

Bracket

FNS CB (Finisher Control Board)

(4) Adhere the magnets to conveyance guide plate A and

retighten the screws.

(5) Reassemble in opposite sequence to removal.

Screws

(3) Loosen the 4 magnet holding set screws (two at the

front and two at the back), and move conveyance
guide plate C all the way in the direction indicated by
the arrow.

FS-67

FS-108/108B

Sub-tray Gate

SD2

(Sub-tray

Paper Exit)

Adjusting the Subtray Paper Exit Gate

1. Tools used

• Phillips head screwdriver

• Scale

2. Preparation
(1) Remove the 2 set screws holding the FNS CB (FNS

control board) in place. Remove the FNS CB together
with its bracket.

Bracket

FNS CB (Finisher Control Board)

(4) With SD2 ON, measure the gap between the sole-

noid plunger and the bracket stopper (indicated by B
in the illustration).

Spec value for gap: B = 5 ±0.5mm.

(5) If either gap is out of specification, carry out adjust-

ment as described below.

Clamps

Clamp

Screws

(2) Remove the wirings from the clamps, and move the

FNS CB together with its bracket.

Clamps

Clamps

Clamps

Clamps

(3) With SD2 (subtray paper exit) OFF , measure the gap

between the subtray gate and the guide plate (indi­cated by A in the illustration).

Spec value for gap: A = 4 ±0.5mm.

FS-68

FS-108/108B

Screws

Bracket

FNS CB (Finisher Control Board)

Clamps

Clamps

Clamps

Clamps

Clamp

Clamps

3. Adjustment Procedure
(1) Loosen the 2 set screws holding the solenoid in place,

and move the solenoid as necessary to adjust.

Screws

Solenoid

(2) Retighten the screws.
(3) Reinstall in opposite sequence to removal.

Adjusting the Paper Path Switching Gate

1. Tools used

• Phillips head screwdriver

• Scale

2. Preparation
(1) Remove the following parts.

• Rear cover

• Top cover

• PI-108 (if installed)

(2) Remove the 2 set screws holding the FNS CB (FNS

control board) in place. Remove the FNS CB together
with its bracket.

(3) Remove the wirings from the clamps, and move the

FNS CB together with its bracket.

FS-69

FS-108/108B

Guide Plate

Screws

Bracket

FNS CB (Finisher Control Board)

(4) With SD1 (gate) ON, measure the distance between

the long gate and the guide plate, indicated by A in
the illustration.

Spec value for distance: A = 7.6±0.5mm.

(5) Again with SD1 ON, measure the gap between the

solenoid plunger and the bracket stopper (indicated
by B in the illustration).

Spec value for gap: B = 5±0.5mm.

Gate

Guide Plate

SD1 (Gate)

Adjusting the Bypass Gate

1. Tools used

• Phillips head screwdriver

• Scale

2. Preparation
(1) Remove the rear cover.
(2) Open the front cover and the guide plate.

(6) If either measurement is out of specification, carry

out adjustment as described below.

3. Adjustment Procedure
(1) Loosen the 2 set screws holding the solenoid in place,

and move the solenoid as necessary to adjust.

Screws

Solenoid

(2) Retighten the screws.
(3) Reassemble in the opposite sequence to removal.

(3) Remove the 2 set screws holding the FNS CB in

place. Remove the FNS CB together with its bracket.

FS-70

FS-108/108B

Solenoid

Screws

(4) Remove the wirings from the clamps, and move the

FNS CB together with its bracket.

Clamps

Clamps

Clamp

Clamps

Clamps

(5) With SD5 (by pass) OFF, measure the distance be-

tween the by pass gate and the guide plate, indicated
by A in the illustration.

Spec value for distance: A = 4.3±0.5mm

(6) With SD5 ON, measure the gap between the sole-

noid plunger and the bracket stopper (indicated by B
in the illustration).

Spec value for gap: B = 5±0.5mm

3. Adjustment Procedure
(1) Loosen the 2 set screws holding the solenoid in place,

and move the solenoid as necessary to adjust.

Clamps

(2) Retighten the screws.
(3) Reassemble in the opposite sequence to removal.

SD5 (By-pass)

Guide Plate

Gate

(7) If either measurement is out of specification, carry

out the following adjustment .

FS-71

FS-108/108B

Screw

Bracket

Adjusting the Shift Position

1. Tool used

• Phillips head screwdriver

2. Preparation
(1) Remove the following parts.

• Rear cover

• Top cover

• PI-108 (if installed)
(2) Switch the power OFF −> ON −> OFF.
(3) With the roller shift motor (M2) OFF (home position),

check that the actuator on PS18 (roller shift HP) is
correctly aligned with the cutout on the shift unit
mounting plate.

Actuator

3. Adjustment Procedure
(1) Loosen the screw holding the PS18 (roller shift HP)

bracket in place, and adjust the bracket position as
necessary.

(2) Retighten the screw.
(3) Reassemble in the opposite sequence to removal.

Cutout on Mounting Plate

(4) If the actuator is not correctly aligned with the cutout,

carry out adjustment as described in the following
procedure.

FS-72

FS-108/108B

Bracket

Screw

Adjusting Opening/Closing at the Paper
Exit

1. Tool used

• Phillips head screwdriver

2. Preparation
(1) Remove the following parts.

• Rear cover

• Top cover

• PI-108 (if installed)

(2)Switch the power OFF −> ON −> OFF. Then, with

the paper exit closed, confirm that the paper exit cas­ing is firmly against the stopper section.

3. Adjustment Procedure
(1) Loosen the set screw holding the PS12 (paper exit-

opening detector) bracket in place, and adjust the
bracket position as necessary.

(2) Retighten the bracket set screw.
(3) Reassemble in the opposite sequence to removal.

Casing

Stopper Section

(3) If the casing is not in firm contact with the stopper,

carry out adjustment described in the following pro­cedure.

Paper Exit Opening

FS-73

FS-108/108B

Solenoid Bracket

Screws

Screws

Solenoid Bracket

Adjusting the Paper Exit Opening Solenoid

1. Tools used

• Phillips head screwdriver

• Scale

2. Preparation
(1) Remove the following par ts.

• Rear cover

• Top cover

• PI-108 (if installed)

(2) With SD4 (paper exit opening solenoid) ON, mea-

sure the gap between the solenoid plunger and the
bracket stopper.

Spec value for gap: A = 6.0 ±0.5mm

SD4 (Exit Opening)

3. Adjustment Procedure
(1) Remove the 2 set screws holding the solenoid bracket

in place, and remove the solenoid together with the
bracket.

(2) Loosen the 2 screws holding the solenoid to the

bracket, and adjust the position of solenoid.

(3) If the gap is out of specification, carry out adjustment

described in the following procedure.

(3) Retighten the 2 solenoid screws, then replace the

solenoid and bracket into their original position and
screw in the 2 bracket screws.

(4) Reassemble in the opposite sequence to removal.

FS-74

FS-108/108B

B=2.5±0.5mm

SD4 (Paper Exit
Opening)

Paper Exit
Lower
Guide Plate

Screws

Solenoid Bracket

Adjusting the Paper Exit Opening Lower
Guide Plate

1. Tools used

• Phillips head screwdriver

• Scale

2. Preparation
(1) Remove the following parts.

• Rear cover

• Top cover

• PI-108 (if installed)

(2) With SD4 (paper exit opening solenoid) OFF, con-

firm that the paper exit opening lower guide plate is a
sufficient distance (distance A) higher than the
sponge rollers.

Spec value: A = 1.5mm and greater

Lower Guide Plate

A=1.5mm and greater

(3) Hold down the paper exit opening guide plate with

your hand so that the paper exit roller makes con­tact, and check that the remaining stroke for sole­noid SD4 (distance B) is within spec.

Spec value: B = 2.5±0.5mm

(4) If either measurement is out of specification, carry

out adjustment as described below.

3. Adjustment Procedure
(1) Loosen the 2 set screws holding the solenoid bracket
in place, and adjust the position of the bracket so that dis­tances A and B are within specifications.

Sponge Roller

(2) Retighten the 2 bracket set screws.
(3) Reassemble in the reverse sequence to removal.

FS-75

FS-108/108B

Actuator

PS8
(Upper Alignment Plate HP)

Adjusting the T ension of the Stacker Paper

Exit Belt

1. Tools used

• Phillips head screwdriver

• Tension gauge or spr ing balance

2. Preparation
(1) If the belt tensioner has been loosened as a result of

belt replacement or for some other reason, adjust as
described below.

3. Adjustment Procedure
(1) Loosen the 4 set screws (see illustration).
(2) Using a tension gauge or spring balance, pull the

belt-tensioner pulley shaft so that tension A is at the
value indicated below. Maintain this tension while
retightening the screws.

Specification value for tension: A = 2kg

Screws

Adjusting the Mount Location of the Upper

Alignment Plates

1. Tools used

• Phillips head screwdriver

• Scale

2. Preparation
(1) Open the front cover and pull out the stacker/stapler

unit.

3. Adjustment Procedure
(1) Move the upper alignment plates into home position.

(Move so that the actuator on the upper alignment
plate drive belt is at PS8 (upper alignment plate HP).

A

Screws

(3) Reassmble in the opposite sequence to removal.

Pulley Shaft

Belt Tensioner

FS-76

FS-108/108B

Belt Tensioner

Screws Scale

(2) Loosen the 2 set screws securing the upper align-

ment plates in place (one screw on each plate), and
adjust the plates so that distances A and B are within
specifications.

Specification values: A = 337±0.5mm

B = 41.2±0.5mm

Screws

Rear Panel

Upper Alignment Plates

(3) Retighten the screws.

Adjusting the Tension of the Upper

Alignment Plate Drive Timing Belt

1. Tools used

• Phillips head screwdriver

2. Preparation
(1) If the upper alignment-plate drive belt tensioner has

been loosened as a result of belt replacement or for
some other reason, adjust as described below.

3. Adjustment Procedure
(1) Loosen the 2 set screws (see illustration).
(2) Move the belt tensioner so that the end is aligned

with the center mark on the scale, and retighten the
screws.

FS-77

FS-108/108B

337±0.5mm 40.4±0.5mm

2.0mm

Screws

Rear Panel

Adjusting the Mount Location of the Lower

Alignment Plates (FS-108B only)

1. Tool used

• Phillips head screwdriver

2. Preparation
(1) Open the front cover and pull out the stacker/stapler

unit.

3. Adjustment Procedure
(1) Move the lower alignment plates into home position.

(Move so that the actuator on the lower-alignment­plate drive belt is at PS24 (lower-alignment-plate HP).

(2) Loosen the 2 set screws fixing the lower alignment

plates in place (one screw on each plate), and adjust
the plates so that distances A and B are within speci­fication.

Specification values: A = 337±0.5mm

B = 40.4±0.5mm

(3) Retighten the screws.

PS24
(Lower Alignment Plate HP)

Actuator

FS-78

FS-108/108B

Staple Positions

Flat-Stapling Stoppers

Adjusting the Tension of the Lower
Alignment Plate Drive Timing Belt
(FS-108B only)

1. Tool used

• Phillips head screwdriver

2. Preparation
(1) If the lower alignment plate drive belt tensioner has

been loosened as a result of belt replacement or for
some other reason, adjust as described below.

3. Adjustment Procedure
(1) Loosen the 2 set screws (see illustration).
(2) Move the belt tensioner so that the end is aligned

with the center mark on the scale, and retighten the
screws.

Belt Tensioner

Adjusting the Stapling Position (Flat

Stapling)

1. Tools used

• Phillips head screwdriver

• Scale

2. Preparation
(1) Check whether the virtual line running between the

stoppers is parallel to the virtual line between the sta­plers.

Screws

Scale

FS-79

FS-108/108B

Plate

Jig

(2) If the lines are not parallel or if you need to change

the stapling position, carry out adjustment as de­scribed below.

3. Adjustment Procedure
(1) Loosen the 3 set screws holding the flat stapling stop-

per bracket in place, and position the bracket so that
distance A is within the specification range.

Specification range: A = 5.5 to 11.5mm

(initial value = 8.5mm)

Adjusting the Stapler V ertical Positioning

1. Tools used

• Phillips head screwdriver

• Jig

2. Preparation
(1) When replacing or reinstalling a stapler or clincher,

adjust the vertical alignment as described below.

3. Adjustment Procedure
(1) If installing a stapler, mount the stapler into place.
(2) Loosely fasten the clincher in place with 4 set screws.

(If the clincher is already fastened in place, loosen
the 4 screws so that you can adjust it.)

(3) Remove the plate from the jig.

Adjust.

Scale

Scale

Scale

(2) Hold paper against the stoppers and confirm that all

three stoppers are in alignment.

(3) Execute stapling to confirm that the stopper line and

stapler line are parallel.

FS-80

FS-108/108B

Jig

Jig

Peg

Hole

Clincher

(4) Remove the cartridge, and install the plate that you

took from the jig.

Cartridge

Plate

(5) Reinstall the cartridge.

(6) Fit the two pegs on the jig into the corresponding holes

in the clincher.

FS-81

FS-108/108B

Stacker/Stapler Unit

Rail Stopper Screw

Rail Stopper Screw

(7) Rotate the stapler gears downward. Adjust the

clincher position so that the plate on the cartridge fits
smoothly into the groove on the jig.

Gears

Groove

Plate

Adjusting the Staple Orientation (Stapling

and Folding) (FS-108B only)

1. Tool used

• Phillips head screwdriver

2. Preparation
(1) If the staple orientation is not parallel with the paper

edge, adjust as described below.

3. Adjustment Procedure
(1) Open the front cover and pull the stacker/stapler unit

part of the way out..

(2) Remove the 2 rail stopper screws. Then pull the

stacker/stapler unit all of the way out.

(8) With the plate in the groove, tighten the 4 clincher

(9) Rotate the stapler gears back upwards, and remove

(10) Remove the plate from the cartridge and set it back

(11) Reinstall the cartridge and check that stapling oper-

Stapler

set screws to fasten the clincher into place.

the jig.

into the jig.

ates correctly.

FS-82

FS-108/108B

(3) Remove the 4 set screws holding the cover in place,

and remove the cover.

Screws

Cover

Screws

(4) Loosen 4 more set screws.
(5) Rotate the stapling and folding stopper assembly as

necessary to adjust the alignment.

Scale

Screw

Adjusting the Staple Position (Stapling and

Folding) (FS-108B only)

1. Tool used

• Scale

2. Preparation
(1) Connect the finisher to the main body.
(2) Load paper of the appropriate size into the main body.
(3) Before proceeding, be sure that you have correctly

adjusted the angle of the stapling-and-folding stop­per.

(4) For each paper size, confirm that is stapling is posi-

tioned correctly at the center of the sheets.

(5) If stapling is off center, adjust as described below.

3. Adjustment Procedure
(1) Hold down keys [3] and [6] on the copier’s numeric

keypad while setting the main switch ON. The copier

will enter finisher-adjustment mode.
(2) Select [[6] Finisher Adjust] at the copier display.
(3) Select [Copy Screen] at the copier display. The dis-

play switches to the Copy screen.
(4) Take a staple-and-fold sample using the paper size

that you want to adjust for.
(5) Return to the adjustment screen and select [[1] Sta-

pling-and-folding stopper adjust].
(6) Select the size for adjustment by pressing the up or

down arrow button on the display as necessary.
(7) Enter the adjustment value using the button or the

numeric keypad. (0.1mm/step)
(8) Press the [Set] button to register the adjustment.
(9) Return to the Copy screen and take another sample.

Check that the discrepancy is within the limit.
(10) Repeat the above adjustment procedure for other

paper sizes.

(6) Retighten the screws.

FS-83

FS-108/108B

Screws

Folding Stopper

Adjusting the Angle of the Folding
Stopper (FS-108B only)

1. Tools used

• Phillips head screwdriver

• Phillips head stubby screwdriver

2. Preparation
(1) Connect the finisher to the main body.
(2) Load 11x17 paper into the main body.
(3) Remove the paper exit guide plate adjustment cover.

3. Adjustment Procedure
(1) Take a fold sample using 11x17 paper.
(2) Check the discrepancy along the folded set’s trailing

edge, and use this information to judge the direction
and amount by which the stopper angle must be cor­rected.

(3) Loosen the 2 front set screws holding the stopper in

place, and adjust the stopper angle by rotating around
the rear screw.

Adjustment Cover

(4) Check whether the following conditions hold.

• Check that the fold line (the folding stopper) is
perpendicular to the conveyance direction.

• Check that the fold side discrepancy (for 11x17
paper) is within the limit.

Limit: A = 1mm

A=Within1mm

Screw

(4) Retighten the 2 front screws.
(5) Take another sample and check the discrepancy.
(6) Repeat steps (3) and (4) until the discrepancy is within

the specified limit.

(7) Replace the adjustment cover.

(5) If either or both of the above conditions does not hold,

adjust as described below.

FS-84

FS-108/108B

Paper exit direction

1.4mm

Adjusting the Folding Stopper Positions
(FS-108B only)

1. Tool used

• Scale

2. Preparation
(1) Connect the finisher to the main body.
(2) Load paper of the appropriate size into the main body.
(3) Before proceeding, be sure that you have correctly

adjusted the angle of the folding stopper.

(4) Check whether the following conditions hold.

• For each paper size: Paper is correctly folded at
the center.

• For each paper size: Discrepancy along the trail­ing edge of the folded paper is within the limit.

Limit: A=1mm

(7) Enter the adjustment value [=half the value of the dis-

crepancy along the folded set’s trailing edge] using
the button or the numeric keypad. (0.1mm/step)
If the lower pages are jutting out past the upper pages,
the fold is too much to the “+” side; correct by adjust­ing to the “–” side. If the upper pages are jutting out,
the fold is too much to the “–” side; correct by adjust-

ing to the “+” side.
(8) Press the [Set] button to register the adjustment.
(9) Return to the Copy screen and take another sample.

Check that the discrepancy is within the limit.
(10) Repeat the above adjustment procedure for other pa-

per sizes.

4. Example
(1) Assume that at time of ejection the lower pages are

extending out 1.4mm relative to the upper pages.

A=Within1mm

(5) If either or both of the above conditions does not hold,

adjust as described below.

3. Adjustment Procedure
(1) Hold down keys [3] and [6] on the copier’s numeric

keypad while setting the main switch ON. The copier

will enter finisher-adjustment mode.
(2) Select [[6] Finisher Adjust] at the copier display.
(3) Select [Copy Screen] at the copier display. The dis-

play switches to the Copy screen.
(4) T ake a fold sample using the paper size that you want

to adjust for.
(5) Return to the adjustment screen and select [[2] Fold-

ing stopper adjust].
(6) Select the size for adjustment by pressing the up or

down arrow button on the display as necessary.

(2) Since the lower pages are jutting out, the discrep-

ancy is on the “+” side. Correct by entering an adjust­ment of [-7].

FS-85

FS-108/108B

k

k

Adjusting the Tension of the Stapler

Movement Timing Belt

1. Tools used

• Phillips head screwdriver

• Tension gauge or spr ing balance

2. Preparation
(1) If the belt tensioner has become loose as a result of

belt replacement or for some other reason, adjust as
described below.

3. Adjustment Procedure
(1) Loosen the 2 screws holding the tensioner in place.
(2) Using a tension gauge or spring balance, pull the

belt-tensioner so that tension A is at the value indi­cated below. Maintain this tension while retightening
the screws.

Specification value for tension: A = 1.5±0.5kg

Adjusting the Tension of the Stapler
Rotation Timing Belt

1. Tools used

• Phillips head screwdriver

• Tension gauge or spring balance

2. Preparation
(1) If the belt tensioner has been loosened as a result of

belt replacement or for some other reason, adjust as
described below.

3. Adjustment Procedure
(1) Loosen the 2 screws holding the tensioner in place.
(2) Using a tension gauge or spring balance, pull the

belt-tensioner so that tension A is at the value indi­cated below. Maintain this tension while retightening
the screws.

Specification value for tension: A = 0.75 ±0.05kg

FS-86

Adjusting the Folding Force (FS-108B
only)

1. Preparation
(1) If necessary , you can change the force of the folding

and pressure rollers as described below.

CAUTION: If changing the forces, be sure to make the same

change for all rollers at the same time.

2. Adjustment Procedure
(1) Set the springs as illustrated below; a pressure spring

on the folding roller, and a fold spring on the pres­sure roller.

Force: If A = 8.5kgf

If B = 11.4kgf
If C = 14.4kgf

CAUTION: Be sure to attach the springs into like-labeled

holes (either A, or B, or C).

FS-108/108B

Pressure Spring

Fold Spring

Pressure Spring

Fold Spring

FS-87

FS-108/108B

This page left blank intentionally.

FS-88

FS-108/108B

FS-108/108B ELECTRICAL PARTS LAYOUT DRAWING

1. Switches and Sensors

MS1 Interlock
PS1 Sub-tray paper exit PS
PS2 Tray upper-limit PS
PS3 Tray lower-limit PS
PS4 FIN entrance passage PS
PS5 Stacker conveyance passage PS
PS6 Paper exit-1 PS
PS7 Staple paper exit upper-limit PS
PS8 Alignment-plate/upper HP PS
PS9 Paper exit-belt HP PS
PS10 Paper exit-2 PS

FS-89

PS11 Stapler-movement HP PS
PS12 Paper exit-opening PS
PS13 Entrance paper detection PS
PS14 Stapler-rotation HP PS
PS15 Tray no-paper detection PS
PS18 Roller-shift HP PS
PS20 Stacker no-paper detection PS
PS21
PS22 Folding-knife HP PS
PS23 Stapling and folding stopper HP PS
PS24 Alignment-plate/lower HP PS
PS25 Folding paper-exit PS

Stapling and folding stopper-release-motor HP PS

FS-108/108B

PS26 Folding passage PS/2
PS27 Folding stopper HP PS
PS28 Folding passage PS/1
PS29 Folding full up PS
PS30 Clincher HP PS/R
PS31 Stapler HP PS/R
PS32 Clincher timing PS/R
PS33 Clincher HP PS/F
PS34 Stapler HP PS/F
PS35 Clincher timing PS/F
PS207 Paper exit-cover open/close detection PS
SW1 Cartridge detection SW/R

SW2 Staple detection SW/R
SW3 Cartridge detection SW/F
SW4 Staple detection SW/F

FS-90

FS-108/108B

2. Motors, Solenoids, and Boards

M1 FNS conveyance motor
M2 Roller-shift motor
M3 Tray up-down motor
M4 Stapler rotation motor
M5 Alignment-plate/upper motor
M7 Paper exit-roller motor
M8 Paper exit-opening motor
M11 Stapler-movement motor
M13 Stacker entrance motor
M14 Stapling and folding stopper motor
M15 Alignment-plate/lower motor
M17 Stapling and folding stopper release motor

M18 Folding-stopper motor
M19 Folding-knife motor
M20 Folding conveyance motor
M21 Clincher motor-R
M22 Stapler motor-R
M23 Clincher motor-F
M24 Stapler motor-F
SD1 Gate solenoid
SD2 Sub-tray paper exit solenoid
SD4 Paper exit-opening solenoid
SD5 By-pass solenoid
FNS CB FNS control board
RB Relay board

FS-91

FS-108/108B

FS-108/108B CONNECTER LAYOUT DRAWING

128(W:3 PIN)

124(W:3 PIN)

133(W:3 PIN)

114(W:6 PIN)

129(W:3 PIN)

202(W:16 PIN)

145(W:3 PIN)

121(W:3 PIN)

35(W:3 PIN)

108(BK:2 PIN)
143(W:3 PIN)
111(W:6 PIN)

140(W:3 PIN)

131(W:3 PIN)

204(W:16 PIN)

144(W:3 PIN)

149(W:3 PIN)
147(W:3 PIN)

148(W:3 PIN)

RB

24(GY:22 PIN) 23(GY:34 PIN)

117(BK:2 PIN)

203(W:24 PIN)

141(W:3 PIN)

201(W:24 PIN)

146(W:3 PIN)

119(W:2 PIN)

142(W:3 PIN)

100(W:11 PIN)

FS-92

28(GY:20 PIN) 25(GY:24 PIN)

27(W:9 PIN)

26(GY:14 PIN)

104(W:6 PIN)

21(GY:60 PIN)

22(GY:16 PIN)