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

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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.

FS-108/108B

CONTENTS

FS-108/108B

SAFETY PRECAUTIONS .......................................	v
PRODUCT SPECIFICATIONS .........................	FS-1
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
CONVEYANCE 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 .......	FS-35
M15 (Alignment Plate/Lower) Control
(FS-108BM only) ............................	FS-36
M2 (Roller Shift) Control .........................	FS-38
M7 (Paper Exit Roller) Control ...............	FS-39
SD4 (Paper Exit Opening) Control .........	FS-41
M8 (Paper Exit Opening) Control ...........	FS-43
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

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.

∙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

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-inclu- sive, 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.

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.

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.

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.

∙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

FS-108/108B

PRODUCT SPECIFICATIONS

Type

FS-108: Finishing device implementing offset collation, stapling, and subtray eject

FS-108B: Finishing device implementing offset collation, stapling, subtray eject, stapling and folding, and folding

Paper curling: Maximum 10mm

Copy paper (5 sheets)

Amount of Curll

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. 8.5x11, 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	Other than A3R, 11x17R	A3R, 11x17R
2 to 9	100 stacks	50 stacks
10 to 20	50 stacks	50 stacks
21 to 30	30 stacks	30 stacks
31 to 40	25 stacks	25 stacks
41 to 50	20 stacks	20 stacks

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)

Booklet mode folding level (FS-108BMonlonly)

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

Fold height

Original Pages	A3R, 11x17R	B4, 8.5x14R	A4R, 8.5x11R
0 to 5	25mm or less	25mm or less	25mm or less
6 to 10	50mm or less	50mm or less	Not specified*
11 to 16	Not specified*	Not specified*	Not specified*

*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)

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 accordance 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)
Single staple (rear)	Two staples	Single staple
		@ @ @(front)
Booklet mode (stapling and folding)
	(FS-108B only)

Staple capacity: 5000 staples/cartridge

Booklet Mode (FS-108B only)

Stapling-and-folding:

	Maximum 16 sheets (22 lb. high-quality paper)
	Maximum 15 sheets (22 lb. high-quality paper)
	+ 1 sheet (53 lb. high-quality paper)
Folding:	Maximum 3 sheets (22 lb. high-quality paper)

Option

PI-108 (Sheet feeder)

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:

656	85	781
367

1095

1151

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.

FS-2

FS-108/108B

CENTER CROSS SECTION

		Sub-tray
	Shift Unit
Main Tray	Paper Exit Unit
		Gate
		Sub-tray Gate
		By-pass Gate
		Flat-Stapling Stopper
		Stapler Unit
		Area within dotted lines:
	Stacker Unit	FS-108BM only
		Stapling and
		Folding Stopper
	Booklet Tray	Folding Unit
Folding Stopper
		FS-3

FS-108/108B

DRIVE SYSTEM DIAGRAM

Paper Conveyance Drive

Sub-tray Paper Exit Roller B

Sub-tray Paper Exit Roller C

Sub-tray Paper Exit Roller A

Conveyance Slide Shaft

Nip Paper Exit Roller

Conveyance Roller D

Paper Exit Roller

Conveyance Roller C

M7 (Paper Exit

Roller)

Conveyance Roller B

Conveyance Roller A

M1 (FNS Conveyance)

Intermediate Conveyance Roller

FS-4

FS-108/108B

Stacker Drive

Paper Exit Roller

M7 (Paper Exit Roller)

Paper Exit Belts

Stacker Entrance Roller

Pulley

Swivel Roller

Paper Exit Arms

M13 (Stacker Entrance)

Folding Drive (FS-108BM only)

Pressure Roller A

Folding Roller B

Pressure Roller B

Folding Roller A

Folding Conveyance Belts

Folding Conveyance Roller

Folding Knife

M20 (Folding Conveyance)

M19 (Folding Knife)

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 Tray

Booklet Tray

Finishing

Paper Conveyance Paths

Sort, Group, Non-sort mode

Sub-tray mode

Staple mode

Booklet mode (FS-108BM only)

FS-6

FS-108/108B

Non-Sort Mode

Exit to main tray

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

	Sub-tray Gate
	Gate
	Conveyance Roller B
Main Tray	Conveyance Roller A
	Paper Exit Roller
	Conveyance Roller D
	Conveyance Roller C

FS-7

FS-108/108B

Sort, Group Mode

Exit to the main tray

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.

	Shift Unit
	Conveyance Slide Shaft
	Gate	Sub-tray Gate
		Conveyance Roller B
Main Tray		Conveyance Roller A
Paper Exit Roller	Conveyance Roller D
		Conveyance Roller C

FS-8

FS-108/108B

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

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
First
		Stapled
				Set

Main Tray

Conveyance Roller C

Sub-tray Gate

Gate

Intermediate Conveyance

Roller

Conveyance Roller B

Conveyance Roller A

Alignment Plate
/Upper	By-pass
	Gate
	Stacker Entrance
	Roller
	Swivel Roller
	Flat-Stapling Stopper
Paper Exit Belt

Stapler Unit	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
Second	Opening
	Stapled
		Set

Main Tray

Conveyance Roller C

Sub-tray Gate

Intermediate	Gate
Conveyance Roller

Conveyance Roller B

Conveyance Roller A

Alignment Plate/Upper

By-pass

Second Sheet Gate

First Sheet

Stacker Entrance Roller

Swivel Roller

Flat-Stapling Stopper

Paper Exit Belt

Stapler Unit

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

Gate	Sub-tray Gate

Intermediate Conveyance Roller

Conveyance Roller B

Upper	Conveyance Roller A
Alignment Plate

Stacker Entrance Roller

Swivel Roller

Paper Exit Belt

Alignment Plate/Lower

Stapler Unit

Stapling and Folding stopper

Pressure Roller A

Folding Conveyance Roller

Folding Roller A

Booklet Tray

	Pressure	Folding Conveyance Belt
	Roller B

Folding

Roller B

Folding Stopper

Folding Knife

FS-12

FS-108/108B

EXTERNAL SECTION

Composition (FS-108/FS-108BM)

Paper Exit Cover

Sub-tray

Top Cover

Main Tray

Front Cover

Rear Cover

Front Side Cover

Paper Exit Stopper Plate

Booklet Tray

Disassembly and Reassembly

CAUTION: Be sure that the power cord has been unplugged 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.

Screws

Screws

Rear Cover

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

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.

Front Cover

Screws

Hinge

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

FS-13

FS-108/108B

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

Screws

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

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.

Paper Exit Cover

Screw

Screw

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

FS-14

FS-108/108B

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)

Connector

Screws

(3)Remove the 2 set screws holding the main tray in place, and lift the main tray up and off.

Screws

Main Tray

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

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.

Screws

Front Side

Cover

(2)Reinstall the front side cover in the opposite sequence to removal.

FS-15

FS-108/108B

7. Removing and Reinstalling the Paper Exit Stopper Plate	(3) Remove the 4 set screws from the front and rear wire
a. Procedure	brackets (two screws at each bracket), and then re-
(1) Remove the following parts.	move the up-down stay.
• Rear cover
• Main tray
• Booklet tray
• Front cover
• Front side cover	Wire Bracket
(2) Remove the 4 set screws holding the left and right
up-down covers in place, and remove these two cov-		Wire Bracket
ers.
	Screws
		Screws
	Up-Down Stay
	(4) Remove 8 set screws and take off the front and rear
Screws	auxiliary side up down plates.
Screws
	Rear Auxiliary	Front Auxiliary
	Side-Up-Down
		Side-Up-Down
	Plate
		Plate
Up-Down Covers
	Screws
		Screws
	Screws

FS-16

FS-108/108B

(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.

Screws

Paper Exit

Stopper Plate

Up-Down Stay

Screws

Screws

Screws

Screws

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

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

Press down

Wire Bracket

Wire Bracket

Screws

Screws

Up-Down Stay

FS-17

FS-108/108B

CONVEYANCE SECTION

Composition

FS-108/FS-108BM Rear

Sub-tray Paper Exit Roller C

Sub-tray Paper Exit Roller B

M1 (FNS Conveyance)

Conveyance Slide Shaft

Sub-tray Paper Exit Roller A

M7 (Paper Exit Roller)

Nip Paper Exit Roller

Conveyance Roller B

Paper Exit Roller

(Sponge Roller)

Conveyance Roller A

Conveyance Roller D

Conveyance Roller C

	M13 (Stacker Entrance)
Intermediate Conveyance Roller	Stacker Entrance Roller
	Paper Exit Belt
	Area within dotted lines: FM-108BM only

Folding Conveyance Roller	Folding Roller A
	Pressure Roller A

Folding Conveyance Belt

Pressure Roller B

Folding Roller B

M20 (Folding Conveyance)

FS-18

FS-108/108B

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.

	Link Mechanism
	M2 (Roller Shift)
Paper exit direction
Slide Shaft	Link Mechanism
	M2 (Roller Shift)
Slide Shaft
	30mm towards the direction
	of the back side

FS-19

FS-108/108B

4. Stacker Unit

Alignment Plate/		M5
Upper
		(Alignment
Paper Exit		Plate/Upper)
Belts	Paper Exit Arms	Alignment Plate/Upper

FS-108BM Only

M17 (Stapling and Folding Stopper Release)

M14

(Stapling and Folding Stopper)

	Alignment
	Plate/Lower
Alignment Plate/	M15
	(Alignment Plate/
Lower	Lower)
	Stapling and Folding Stopper

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.

FS-20

FS-108/108B

5. Paper Exit Opening Unit

	M8
SD4 (Paper Exit Opening)	(Paper Exit Opening)
Paper Exit Opening
Nip Roller

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.

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

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).

Paper Exit Opening
Main Tray	SD4 (Paper Exit Opening)		Conveyance
			Roller B
			Conveyance
			Roller C
Paper Exit Roller		Conveyance Roller D
			Conveyance Roller A

Nip Roller

SD4 (Paper Exit
Opening)	Paper Exit Roller

FS-21

FS-108/108B

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 Belts
(Folding Conveyance)
Folding Rollers
M18
(Folding
Stopper)
Folding
Paper-End Stopper
	Folding Knife	Folding Knife
	Folding Knife
	Paper	M19 (Folding Knife)

Disassembly and Reassembly

CAUTION: Be sure that the power cord has been unplugged 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

(2)Insert the end of a screwdriver into the slot in the sponge roller, and twist the screwdriver to pry the roller off.

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 until the click into place.

Match

Match

FS-22