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JUNE 2000 FY8-13GT-000

DADF-D1

REVISION 0

COPYRIGHT2000 CANON INC. CANON DADF-D1REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)

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Scope of Application

This document is published by Canon Inc. for the purpose of providing its readers with

the technical knowledge needed to install, maintain, and repair the product under

discussion. It may also be used as a reference when studying the technical aspects of the

product.

The contents of this document are generic in nature so as to cover all areas where the

product is sold. In this respect, it is important to note that some of the specifications or

descriptions found in this document may not apply in some areas.

In addition, it must be borne in mind that the specifications or descriptions may differ

from those noted in the actual machine or found in advertisements or in other printed

matter.

All questions concerning this document are to be addressed to the Service Department of

the appropriate Sales Company.

Revision

The information disclosed in this document may not necessarily be accurate because of

updates made to the product, and major differences will be communicated in the form of

technical bulletins.

The following will not apply where it does not conform to the laws or regulations of the

country in which the product is used.

Trade Marks

The product names and company names found in this document are registered trade marks

or trade marks of their respective companies.

Copyright

The title to this document belongs to Canon Inc., and no part of it may be reproduced,

quoted, or translated into another language without the consent of Canon Inc. in writing.

Warning

This document must be handled with utmost care. Disclosure of its contents may lead to

legal proceedings.

COPYRIGHT 2000 CANON INC.

Printed in Japan

Imprim au Japon

COPYRIGHT2000 CANON INC. CANON DADF-D1REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)

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COPYRIGHT2000 CANON INC. CANON DADF-D1REV.0 JUNE 2000 i

INTRODUCTION

1 Symbols Used

This documentation uses the following symbols to indicate special information:

Symbol Description

Indicates an item requiring care to avoid combustion (fire).

Indicates an item prohibiting disassembly to avoid electric shocks or problems.

Indicates an item requiring disconnection of the power plug from the electric

outlet.

Indicates an item intended to provide notes assisting the understanding of thetopic in question.

Memo

Indicates an item of reference assisting the understanding of the topic in ques-

tion.REF.

Provides a description of a service mode.

Provides a description of the nature of an error indication.

Refers to the Copier Basics Series for a better understanding of the contents.

Indicates an item of a non-specific nature, possibly classified as Note, Caution,

or Warning.

Indicates an item requiring care to avoid electric shocks.

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COPYRIGHT2000 CANON INC. CANON DADF-D1REV.0 JUNE 2000i i

INTRODUCTION

2 Outline of the Sevice Manual

This Service Manual contains basic information needed to service the DADF-D1 in the

field, conducted for the purpose of maintaining its product quality and a specific level ofperformance.

This Service Manual consists of the following chapters:

Chapter 1 General Description, shows the features and specifications of the machine,

as well as the names of parts and how to operate it.

Chapter 2 Operations and Timing, explains the mechanical and electrical systems of

the machine by function in relation to the principles of operation and timing

at which they are driven.

Chapter 3 Mechanical Systems, shows how to disassemble/assemble the machineand make adjustments.

Chapter 4 Maintenance and Inspection, provides tables of periodically replaced

parts and consumables/durables and a scheduled servicing chart.

Chapter 5 Troubleshooting, contains troubleshooting tables and diagrams of electrical

parts, lists of VRs, LEDs, and check pins by PCB, and an outline of self-

diagnosis.

In addition, an appendix is added to offer a general timing chart, list of sig-

nals/abbreviations, general circuit diagrams, and PCB diagrams.

The machine comes with an Installation Procedure. Refer to the instructions in the book-

let when installing the machine.

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COPYRIGHT2000 CANON INC. CANON DADF-D1REV.0 JUNE 2000 i i i

INTRODUCTION

The following rules apply throughout this document:

As a rule, the descriptions in this documentation are based on the following:

1. As needed, the work of each function and its relationship with electrical and me-

chanical parts are explained; where applicable, the timing at which associated parts

are driven are also outlined.In a diagram, the symbol indicates a path of mechanical drive; the symbol

accompanied by a notation indicates the flow of an electrical signal.

The expression power-on means turning on the power switch, closing the front

door, and closing the delivery door so that the parts of the machine are supplied with

power.

2. In a digital circuit, the state of a signal is indicated by 1 if its voltage level is high

and by 0 if low. The level of voltage, however, differs from circuit to circuit.

The machine uses a CPU; however, since the internal functions of a CPU is outside

the scope of a service person, detailed explanations are omitted from descriptions. In

this document, a circuit diagram may cover from sensors to inputs of a controller

PCB or from outputs of a controller PCB to loads, or it may be a functional diagram.

The descriptions of the machine are subject to change for product improvement, and ma-

jor changes will be communicated in the form of Service Information bulletins.

All service persons are expected to be fully familiar with the contents of this Service

Manual and Service Information bulletins to develop a good understanding of the machine,

equipping themselves with the ability and skill to identify faults and to maintain the machine

in good order.

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COPYRIGHT2000 CANON INC. CANON DADF-D1REV.0 JUNE 2000i v

INTRODUCTION

ContentsCHAPTER 1 GENERAL DESCRIPTION

1 Features ............................................... 1-1

2 Specifications ...................................... 1-2

2.1 Specifications ............................. 1-2

3 Names of Parts .................................... 1-4

3.1 External View ............................. 1-4

3.2 Cross Sectional View ................. 1-5

4 Operating the Machine ....................... 1-6

4.1 Original Set Indicator ................. 1-6

4.2 Warnings and Corrective

Action ......................................... 1-6

4.3 Routine Maintenance by the

User ............................................ 1-7

CHAPTER 2 OPERATIONS AND TIMING

1 Basic Construction .............................. 2-1

1.1 Outline of Electrical Circuitry ... 2-1

1.2 Inputs to the ADF Controller

PCB ............................................ 2-2

1.3 Outputs from the ADF

Controller PCB ........................... 2-3

2 Basic Operations ................................. 2-4

2.1 Outline ....................................... 2-4

2.2 Operations .................................. 2-6

2.2.1 Outline ................................. 2-62.2.2 CW Pickup/Delivery

(single-sided original to

single-sided print) ................ 2-7

2.2.3 CW Pickup/Reversal

Delivery(double-sided original

to double-sided print) .......... 2-8

2.2.4 Idle/Pickup/Delivery (double-

sided originals of different

widths (large size) to double-

sided prints) ....................... 2-10

2.2.5 Idle feed/Reversal Pickup/

Delivery (single-sided

originals of different widths

to single-sided prints) ......... 2-13

2.3 Checking the Originals ............ 2-15

2.3.1 Outline ............................... 2-15

2.3.2 Detecting the Presence/

Absence of an Original ...... 2-17

2.3.3 Initial Original SizeDetection (feed direction) ... 2-18

2.3.4 Initial Original Size

Detection (breadthwise) ..... 2-19

2.3.5 Last Original Size

Detection ............................ 2-22

2.3.6 Checking Originals When

Printing Originals of

Different Widths or in

Extra-Length Mode ............ 2-25

2.4 Original Pickup/Separation ....... 2-26

2.4.1 Basic Sequence of PickupOperations .......................... 2-26

2.4.2 Pickup Unit and Stopper .... 2-28

2.4.3 Timing of Pickup ............... 2-29

2.4.4 Controlling the Pickup

Motor (M1) ........................ 2-30

2.5 Reversal .................................... 2-31

2.5.1 Operations.......................... 2-31

2.5.2 Sequence of Operations ..... 2-32

2.6 Feeding and Delivering

Originals ................................... 2-33

2.6.1 Operations .......................... 2-33

2.6.2 Sequence of Operations ..... 2-34

2.6.3 Controlling the Feed

Motor (M2) ........................ 2-35

2.6.4 Controlling the Delivery

Reversal Motor (M3) ......... 2-36

2.7 Controlling the Fan .................. 2-37

2.7.1 Outline ............................... 2-37

3 Jam .................................................... 2-384 Power Supply .................................... 2-42

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INTRODUCTION

3.1.6 Removing the Registration

Roller 2 .............................. 3-16

3.1.7 Removing the Feed Large

Roller ................................. 3-17

3.1.8 Removing the Delivery

Upper Reversal Roller ........ 3-19

3.1.9 Removing the Lead

Roll 2 ................................. 3-21


Lower Reversing Roller ..... 3-22

3.1.11 Removing the Lead

Roll 1 ................................. 3-223.1.12 Replacing the C Guide

Sheet .................................. 3-24

4 Electrical System ............................... 3-25

4.1 Electrical System ..................... 3-25

4.1.1 ADF Controller PCB ......... 3-25


Reversal Sensor ................. 3-26

4.1.3 Removing the Read

Sensor ................................ 3-28

4.1.4 Removing the Post-Separation Sensor .............. 3-28

4.1.5 Removing the Cooling Fan 3-29

4.1.6 Removing the Locking

Solenoid ............................. 3-29

4.1.7 Removing the Pickup

Clutch ................................ 3-30

4.1.8 Removing the Open/Close

Switch ................................ 3-31

4.1.9 Removing the Original

Width Volume ..................... 3-31

CHAPTER 4 MAINTENANCE AND INSPECTION

1 Periodically Replaced Parts ................ 4-1

2 Durables .............................................. 4-1

3 Scheduled Servicing Chart ................. 4-2

4 Cleaning .............................................. 4-4

4.1 Parts of the Reader Assembly .... 4-4

4.1.1 Copyboard Glass .................. 4-44.1.2 Copyboard Glass Retainer ... 4-4

4.2 Parts of the ADF ........................ 4-4

4.2.1 Platen Guide ........................ 4-4

4.2.2 White Plate

(copyboard cover) ................ 4-4

4.3 Sensors ....................................... 4-5

4.3.1 Delivery Reversal Sensor..... 4-54.3.2 Read Sensor ......................... 4-6

CHAPTER 3 MECHANICAL SYSTEMS

1 Basic Construction .............................. 3-1

1.1 External Covers .......................... 3-1

1.1.1 Detaching the Machine ........ 3-1

1.1.2 Removing the Front Cover .. 3-3

1.1.3 Removing the Rear Cover ... 3-3

1.1.4 Removing the Feeder Cover 3-4

1.1.5 Removing the ADF

Controller Cover .................. 3-4

1.1.6 Removing the Inside

Cover.................................... 3-5

1.1.7 Removing the Left Lower

Cover ................................... 3-51.1.8 Removing the Original

Delivery Assembly ............... 3-5

2 Drive System....................................... 3-7

2.1 Drive Assembly .......................... 3-7

2.1.1 Removing Pickup Motor ..... 3-7

2.1.2 Removing the Feed Motor ... 3-7


Reversal Motor .................... 3-9

2.1.4 Removing the Drive Unit ..... 3-9

3 Feed System ...................................... 3-113.1 Feed System ............................. 3-11

3.1.1 Removing the Feed System 3-11

3.1.2 Removing the Pickup

Roller/Feed Roller .............. 3-11

3.1.3 Removing the Separation

Plate/Separation Pad ........... 3-12


Lower Roller ...................... 3-13


Upper Roller ...................... 3-15

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INTRODUCTION

4.3.3 Post-Separation Sensor ........ 4-6

4.4 Rollers and Guides ..................... 4-7

4.4.1 Original Pickup Tray ........... 4-7

4.4.2 Pickup Roller and Feed

Roller ................................... 4-74.4.3 Separation Pad and

Separation Plate .................... 4-7

4.4.4 Upper Registration Roller

and Registration Roller 2 ...... 4-8

4.4.5 Pre-Registration Guide, C

Guide, Lower Registration

Roller, Upper Delivery

Reversing Roller .................. 4-9

4.4.6 Reversing Guide, Large

Feed Roller, Delivery

Guide, and Feed Roll 2 ...... 4-10

4.4.7 Feed Roll 1 ........................ 4-11

4.4.8 Lower Delivery ReversingRoller and Original

Delivery Assembly ............. 4-12

5 Replacement ..................................... 4-13

5.1 Replacing the Dust-Collecting

Tape (upper, large, small) ......... 4-13

6 Adjust ................................................ 4-15

6.1 Height adjusting member

(check for contact and

adjustment) ............................... 4-15

CHAPTER 5 TROUBLESHOOTING

1 Standards and Adjustments ................. 5-1

1.1 Making Basic Adjustments ........ 5-1

1.1.1 Angle Guide

(opening at 90) ................... 5-1

1.1.2 Correcting the Tilt ................ 5-2

1.1.3 Adjusting the Height of

the ADF ............................... 5-31.1.4 Adjusting the ADF

Perpendicularity ................... 5-4

1.1.5 Angle Guide

(opening at 70) ................... 5-6

1.1.6 Adjusting the Read

Position ................................ 5-7

1.1.7 Adjusting the Horizontal

Registration .......................... 5-8

1.1.8 Adjusting the ReadSpeed ................................. 5-11

1.1.9 Adjusting the Leading

Edge Registration ............... 5-16

1.2 Making Adjustments After

Replacing Major Parts .............. 5-20

1.2.1 Outline ............................... 5-20

1.2.2 Adjusting the Sensor

Output ................................ 5-20

1.2.3 Tray Width Volume

Adjustment Mode .............. 5-231.3 Display ..................................... 5-25

1.3.1 Sensor Check Mode ........... 5-25

1.4 Others ....................................... 5-27

1.4.1 Clearing the EEPROM ...... 5-27

2 Troubleshooting ................................ 5-29

2.1 Troubleshooting Malfunction .. 5-29

2.1.1 E412 ................................... 5-29

2.1.2 E420 ................................... 5-292.1.3 E421 ................................... 5-29

2.1.4 E422 ................................... 5-30

2.1.5 The print image has black lines

in sub scanning direction. .. 5-30

3 Arrangement of Electrical Parts ....... 5-31

3.1 Sensors ..................................... 5-31

3.2 Motors, Clutches, Solenoids,

PCBs, and Others ..................... 5-32

4 Light-Emitting Diodes (LED),Check Pins, and Switches by PCB.... 5-33

4.1 ADF Controller PCB ............... 5-33

4.1.1 Arrangement of the Parts ... 5-33

4.1.2 List of the DIP Switch

Functions ........................... 5-34

4.2 Original set LED PCB ............. 5-39

5 Self Diagnosis ................................... 5-40

5.1 Outline ..................................... 5-40

5.2 Alarm ....................................... 5-41

5.3 Jams ......................................... 5-415.4 Errors ....................................... 5-42

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INTRODUCTION

APPENDIX

1 General Timing Chart ......................... A-1

1.1 A4,3 Single-Sided Originals;

Stream Reading ......................... A-1

1.2 A4,2 Double-Sided Originals;

reading face a back .................... A-2

1.3 A4,2 Double-Sided Originals

(reading the back and

then face) ................................... A-3

2 List of Signals/Abbreviations ............. A-5

3 General Circuit Diagram..................... A-7

4 ADF Controller Circuit Diagram ........ A-8

5 Original Set Indicator

Circuit Diagram ................................ A-11

6 List of Special Tools ......................... A-12

7 List of Solvents and Oils .................. A-12

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CHAPTER 1

GENERAL DESCRIPTION

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CHAPTER 1 GENERAL DESCRIPTION

1-1

1 Features

a.Exclusively designed for stream reading.

The machine is exclusively designed for stream reading, and reads originals while pass-ing them over the copyboard in all models.

b. Identifies the size of originals.

The machine is able to detect the length (feed direction) and the width of originals and

send the data to the host machine.

c. Handles double-sided originals.

The machine is equipped with a reversing function to handle double-sided originals.

d.Extra-length mode.When extra-length mode is selected, the machine will be able to handle originals as long

as 630 mm in length.

e.Deals with sheets of different widths.

Originals of two different widths may be used.

*However, must not be of both metric- or inch-configuration sheets.

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1-2

2 Specifications

2.1 Specifications

Item Specifications Remarks

Pickup method Auto pickup/ delivery

Original orientation Original tray: face-up

Original position Original tray: center reference

Separation method Top separation

Original type Single-sided sheet If longer than 432 mm,

AB size 38 to 128 g/m2 paper of 60 ~ 90 g/m2.

INCH size 50 to 128 g/m2

Double-sided sheet: 50 to 128 g/m2

Original size A5 to A3/STMT to 279.4 x 431.8 mm In extra-length

(11 x 17) mode, 630 mm max.

Width: 148.5 to 297.0 mm/

5.8 to 11.7in.

Length: 139.7 to 432.0 mm/

5.5 to 17.0in.

Stack on tray 100 sheets Paper of 80 g/m2.

Stack in delivery 100 sheets Paper of 80 g/m2.

assembly

Original mode Single-sided, double-sided

Original size Yes (default size only)

identification

Residual original Yes (in conjunction with host

detection machine)

Mixed sizes Yes (same widths)

Yes (different widths)

Assurance Combinations of Widths

AB-configuration

A3/B4 A4/B5 B4/A4R B5/A5Book original Yes (must be 50 mm or less in

thickness)

T01-201-01

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1-3

Item Specifications Remarks

Communication with IPC communication 2.1

host machine

Power supply 24 VDC (from host machine)

Weight 14.0kg/30.8Ib (approx.)Dimensions 565 (W) x 545 (D) x 149 (H) mm/

22.2(W) x 21.5(D) x 5.9(H) in.

Serial number A-configuration: XDDxxxxx

Inch/ A-configuration: XDCxxxxx

AB-configuration: XDBxxxxx

Inch-AB-configuration: XDExxxxx

Operating environment Same as host machine

Temperature

Humidity

T01-201-02

Specifications subject to change without notice.

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1-4

3 Names of Parts

3.1 External View

F01-301-01

[1] Feeder cover [4] Slide guide

[2] Rear cover [5] Original pickup tray

[3] ADF controller cover [6] Front cover

[7] Original delivery assembly

[1]

[4]

[3]

[5]

[6]

[7]

[2]

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1-5

3.2 Cross Sectional View

F01-302-01

[1] Feed large roller [8] Pickup roller

[2] Registration roller 2 [9] Original pickup tray

[3] Registration lower roller [10] Delivery upper reversing roller

[4] Registration upper roller [11] Delivery lower reversing roller[5] Separation pad [12] Lead roll 2

[6] Feed roller [13] Lead roll 1

[7] Separation plate

[1] [2] [3] [4] [5] [6]

[13] [11]

[7]

[10]

[8]

[12]

[9]

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1-6

4 Operating the Machine

4.1 Original Set Indicator

The Original Set indicator turns on when an original is placed on the original tray. Itflashes when an original jam.

F01-401-01

4.2 Warnings and Corrective ActionIf the Original Set indicator flashes while an original is supposedly moving, a jam may be

suspected, requiring the following corrective action:

1) Remove all originals from the original tray.

2) Open the feeder cover, and remove any jam.

3) Put the originals back in their initial sequence, and place the stack in the machine.

Original Set indicator

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1-7

4.3 Routine Maintenance by the UserAdvise the user to clean the following at least once a month.

Part Description Remarks

Roller assemblies Wipe it with a cloth

moistened with water or

alcohol; then, dry wipe.

Sheet assemblies

Platen guide

White plate (copyboard cover)

Copyboard glass Reader unit

Copyboard glass retainer Reader unit

T01-403-01

Go through the following to clean the parts:

1) Open the feeder cover, and wipe the

rollers (8 in total) behind the feeder

cover with a moist cloth while rotatingthe rollers; thereafter, dry wipe them

with a dry, soft cloth.

Clean the sheets around the rollers in

the same way.

F01-403-01

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1-8

2) Wipe the three rollers (3 in total; figure

on right) with a moist cloth while rotat-

ing them; thereafter, dry wipe them with

a dry, soft cloth.

Clean the sheets around the rollers inthe same way.

F01-403-02

3) Open the C guide, and clean the rollers

(5 in total) with a moist cloth while

turning the jam removal lever; thereaf-

ter, dry wipe them with a dry, soft cloth.

Clean the sheets around the rollers in

the same way.

F01-403-03

4) Wipe the rollers (4 in total) with a

moisten cloth while rotating them;

thereafter, dry wipe them with a dry,

soft cloth.

F01-403-04

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1-9

5) Close the C guide and the feeder cover;

then, open the ADF. Dry wipe the

copyboard glass with a moist cloth;

thereafter, dry wipe them with a dry,

soft cloth.

F01-403-05

6) Clean the white plate and the platen

guide with a moist cloth; thereafter, dry

wipe them with a dry, soft cloth.

Then, close the ADF.

F01-403-06

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CHAPTER 2

OPERATIONS AND TIMING

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2-1

1 Basic Construction

1.1 Outline of Electrical Circuitry

The machines electrical mechanisms are controlled by the ADF controller PCB. TheCPU (IC1) on the ADF controller interprets input signals from sensors and the host ma-

chine, and generates signals to drive such DC loads as motors and solenoids at such times as

determined in advance.

F02-101-01

CPU(IC1)

EPROM(IC3)

EEPROM(IC5)

D/A(IC6)

IPC(IC2) 5 VDC power

supply (IC1)

+5V+24V

Power supply PCB

Host machine

Solenoid

Clutch

OriginalindicatorLED PCB

Motor

Sensor

ADF controller PCB

J3-6

J1-2IPC

communication2.1

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2-2

1.2 Inputs to the ADF Controller PCBInputs to the ADF Controller PCB (1/1)

F02-102-01

+5V

ADF controller PCB

Registration

1 paper

sensorPI1

J4-8-10

-9

J18-3-1-2

RG1S When paper is present,

'1'.

+5V

ADF

open/closed

sensor PI2

J5-4-6-5

J21-3-1-2

ADFOP When ADF is opened,

'1'.

+5V

Large/small

identification

sensor PI3

J6-7

-9-8

J23-3

-1-2

L/S When paper is present,'1'; then, identifies as

large size.

+5V

A4R/LTRR

identification

sensor PI4

J6-5-4-6

J24-3-1-2

A4R/LR

+5V

Originalset sensor PI5

J7-6-8-7

J28-3-2-1

DTS

+5V

Deliveryreversalsensor

J4-5-6-7

J16-3-1-2

DRSDRSAJ

+5V

Readsensor

J5-1-2-3

J20-3-2-1

RDS

RDAJ

SEPAJ

+5V

Post-

separation

sensor

J7-1-2-3

J6-1-2-3

J106-3-2-1

P-SEP

When paper is present,'1'.

Reference intensity

adjustment signal

J13-3-2-1

-5-6-7

J19

-3-2-1

-1-2-3

+5V

VR1 WIDTH

Detects original width

(analog signal).

For details, see

p. 2-19.

When paper is present,

'1'.

Reference intensity

adjustment signal

When paper is A4R,

'1'; when paper is

LTRR, '0'.


'0'.


'1'.

Reference intensity

adjustment signal

Originalwidthvolume

-4-2-3

-1-3-2

J17

-6

-4-5

-1

-3-2

J22

-3-1-2

-4-6-5

J22

J25-1-2-3

-3-2-1

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2-3

1.3 Outputs from the ADF Controller PCBOutputs from the ADF Controller PCB (1/1)

F02-103-01

ADF controller PCB

Lockingsolenoid

SL2

+24VJ4-3

-4 SL When '1', SL2

turns on.

Pickup clutch

+24VJ8-2

-1 PUCL When '1', CL1

turns on.

CL1

Pickup motor

J10

-1-2-3-4-5-6

M1

Feed motor

Deliveryreversal motor

J9-1-2-3-4-5-6

M2

J8-3-4-7-8-5-6

M3

M1AM1A*M1BM1B*

M2AM2A*M2BM2B*

M3AM3A*M3BM3B*

+24V

+24V

+24V

+24V

+24V

CR SW*CR SW

For details, see

p. 2-35.

For details, see

p. 2-36.

For details, see

p. 2-37.

For details, see

p. 2-42.

J33-1

-2

-2

-1

J13-5

-4

-3

-4

J15-2

-1

-1

-2

J34-6-5-2-1-3-4

-1-2-5-6-4-3

For details, see

p. 2-30.

-1-2-3

FLCK

J11

J11

Cooling fan

FM1

Cover openswitch

SW1

J31-1-2-3

-1-2-3

-3-2-1

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2-4

2 Basic Operations

2.1 Outline

The machine is designed exclusively for stream reading.It uses three motors and one clutch to pick up, feed, and deliver originals.

Name (notation) Function

Pickup motor (M1) Separates/moves originals.

Feed motor (M2) Moves originals.

Delivery reversal motor (M3) Delivers and reverses originals.

Pickup clutch (CL1) Engages or disengages drive from the pickup motor (M1) to

the pickup roller or feed roller.

T02-201-01

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2-5

The following figure shows the signals used to drive the machines loads.

F02-201-01

PI1

S1

S3

M3

CL1

M1

S2

PI5 PI4PI3

M2

ADF controller PCB

Feedmotordrivesignal

Originaldetectionsignal(RDS)J5-2

Originaldetectionsignal(DRS)J4-6

Lockingsolenoiddrivesignal(SL)J4-4

Deliveryreversalmotordrivesignal

Registration1originaldetectionsignal(RG1S)J4-10

Pickupmotordrivesignal

Pickupclu

tchdrivesignal(PUCL)J8-1

O

riginalsetsignal(DTS)J7-8

A4R/LTRR

identificationsignal(A4R/LR)J6-4

Large/smallid

entificationsignal(L/S)J6-9

Originaldetectionsignal(P-SEP)J7-2

SL2

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2-6

2.2 Operations2.2.1 Outline

The machine has four different modes of operation. It responds to the instructions from its

host machine to execute a specific mode of operation as described in the following table.

Mode of operation

[1] CW pickup/

delivery

[2] CW pickup/

reversal delivery

[3] Idle feed/rever-

sal pickup/reversal

delivery

[4]Idle feed/reversal

pickup/delivery

Operation

Picks up an original, and deliv-

ers it as it is after reading.

Picks up an original, and deliv-

ers by reversing it after reading.

Executes idle feed to identify

the size of the original; then,

executes idle feed to enable

reading from the face of the

original and turns it over for de-

livery.

Executes idle feed to identify

the side of the original; then,

turns it over for reading and

then delivery.

Printing mode

single-sided original to single-

sided print

single-sided original to double-

sided print

double-sided original to double-

sided print

double-sided original to single-sided prints

double-sided originals of different

configurations

double-sided print

double-sided originals of different

configurations

single-sided print

single sided originals of different

configurations

single-sided print

single-sided originals of different

configurations

double-sided print

extra-length original

single-sided print

T02-202-01

The following tables show small-size and large-size.

Small size A5R, A5, A4, B5, LTR, STMT

Large size A4R, B5R, A3, B4, LTRR, LGL, 279.4 x 431.8mm (11 x 17)

T02-202-02

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2-7

2.2.2 CW Pickup/Delivery (single-sided original to single-sided print)The following figures show the flow of originals.

F02-202-01

Pickup

Arching

Reading

Delivery

Original

Waiting for reading

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2-8

2.2.3 CW Pickup/Reversal Delivery (double-sided original to double-sidedprint)

The following figures show the flow of originals.

F02-202-02a

Waiting for reading

Reading the face

Reversal

Arching

To next page.

Original

Pickup

Arching

Feed

Waiting for reading

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2-9

F02-202-02b

Reaching the back

Reversal

Feed

Idle feed

Delivery

Feed

Arching

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2-10

2.2.4 Idle/Pickup/Delivery (double-sided originals of different widths (largesize) to double-sided prints)


F02-202-03a

To next page

Feed

Idle feed

Arching

Reversing

Feed

Pickup

Arching

Idle feed

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2-11

F02-202-03b

To next page

Wait for reading Arching

Re-pickup from

reversing assembly

Feed

Wait for readingReading the face

ReversingArching

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2-12

Reading the back

Reversing

Feed

Idle feeding

Delivery

Feed

Arching

F02-202-03c

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2-13

2.2.5 Idle feed/Reversal Pickup/Delivery (single-sided originals of differentwidths to single-sided prints)


F02-202-04a

Pickup

Idle feed

Re-pickup from the reversalassembly

Idle feed

Feed

Reversal

Arching

Feed

To next page.

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2-14

F02-202-04b

Reading the face

Delivery

Waiting for reading

Arching

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2-15

2.3 Checking the Originals2.3.1 Outline

The machine checks originals in either of two methods depending on the selected print

mode:

Normal printing mode (other than printing originals of different widths or extra-length

mode)

Printing originals of different widths or extra-length mode

a.Normal Printing (other than printing originals of different widths or extra-length

mode)

Function

Original detection

Initial original size de-

tection

Feed direction

Cross feed direction

Last original size detec-

tion

Feed direction

Description

Detects the presence/absence of an

original on the original tray.

Detects the length of the original

set on the original pickup tray

(identification of small/large size).

Identifies small-size and large-size.

Identifies LTRR and LGL.

Detects the width of the original

placed on the original pickup tray.

Detects the length of an original in

feed direction within the feed path.

Sensor used (notation)

Original set sensor (PI1)

Large/small identification

sensor (PI3)

Original width volume

(VR1)A4R/LTRR identification

sensor (PI4)

Separation sensor (S3)

T02-203-01

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2-16

b.Printing Originals of Different Widths/Extra-Length Mode

When printing originals of different widths, the machine checks the originals using the

following three mechanisms:

Function

Original de-

tection

Original

length detec-

tion

Description

Detects the presence/absence of an

original on the original pickup tray.

If the post-separation sensor (S3) is

off (small size) in read wait posi-

tion,

Detects the distance of feed from

when the separation sensor turns off

(passage of the trailing edge) to

when the original stops in wait po-

sition.

If the separation sensor (S3) is on

(large size) in read wait position,

Detects the distance of feed from

when the read sensor (S2) turns on

to when the read sensor (S2) turns

off in idle CCW rotation.

Sensor used (notation)

Original set sensor (PI1)

Post-separation sensor (S3)

Post-separation sensor (S3)

Read sensor (S2)

T02-203-02

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2-17

2.3.2 Detecting the Presence/Absence of an OriginalThe presence/absence of an original on the original tray is checked by the original set sen-

sor (PI5).

When an original is placed on the original tray, the detecting lever operates in conjunction

with the light-blocking plate, which blocks the light of the photointerrupter, causing theoriginal set sensor (PI5) to generate the original detection signal (DTS). The ADF controller

PCB turns on the Original Set indicator in response to the original detection signal (DTS).

F02-203-01

PI5

ADF controller PCB

DTSOriginalDetecting lever

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2-18

2.3.3 Initial Original Size Detection (feed direction)The initial original size detection (feed direction) mechanism is executed using the large/

small identification sensor (PI3) designed to find out whether the original on the original

tray is of a small size or a large size. In addition, it serves to distinguish between LTRR and

LGL during last original size detection.When a large-size original is placed on the original tray, the detecting lever operates in

conjunction with the light-blocking plate, which blocks the light of the photointerrupter,

causing the machine to identify the original as being of a large-size and send the result of

detection to its host machine.

The result is based on real-time detection, and is sent to the host machine at 100-msec in-

tervals.

T02-203-04 shows the mechanism used for initial original size detection.

F02-203-02

ADF controller PCB

L/S

PI3

Large-size original Detecting lever

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2-19

2.3.4 Initial Original Size Detection (breadthwise)a.Outline

The initial original size detection mechanism for the breadthwise direction of an original

is performed by the original width detecting volume (VR1) located inside the original tray.

The original width volume operates in conjunction with the slide guide, and the resis-tance shows analog fluctuations. The ADF controller receives the fluctuations in resistance

in the form of the original size signal (WIDTH), and converts it to a breadthwise size.

The A4R/LTRR identification sensor (PI4) is used exclusively to enable the original

width detecting volume (VR1) to accurately detect the width of A4R (210 mm wide) and

LTRR (216 mm wide).

The A4R/LTRR identification sensor generates the A4R/LR identification signal (1)

when the width of an original is 197 mm or more and less than 214 mm.

F02-203-03

Slide guide (front)

Slide guide(rear) 4R/LTRR

identificationsensor (PI4)

Gear

Original width volume

ADF controller PCB

A4R/LR

WIDTH

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2-20

The width of an original is detected as shown in T02-203-03.

Original width (w; mm)

140 w 164

167 w 195

198 w 235

238 w 267

270 w 287290 w 297

A4R/LTRR

identifica-

tion sen-

sor*1

ON

OFF

Large/small identifi-

cation sensor (PI3)OFF

A5R

B5R

A4R

LTRR

B5

LTRA4

ON

-

-

-

LGL

B4

11 x 17A3

Remarks

For A5, A4R is identified.

For STMT, LTRR is identified.

*1: However, the activation range of the A4R/LTRR identification sensor is between 197

mm and 214 mm.

T02-203-03

If the width of an original is not any indicated in the table at power-on yet is between 140

and 297 mm, the next largest size will be selected.

For instance, if the width is a non-default width of 236 mm, the default width of 238 to

267 mm will be selected. If a non-default width is identified except at power-on, the default

width before a shift is made to a non-default width will be used.

The machine will select a default size based on the width of the original detected by ini-

tial original size detection and the length of the original, and communicates the result to

the host machine.

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2-21

b.Slide Guide Positioning Roll

The rail of the slide guide is provided with a groove so that the guide may stop at any of

default size positions. The stop positions, however, are closely located for some paper

sizes, possibly stopping the guide at the wrong point.

The machine comes with two slide guide positioning rolls to enable a change of stop po-sitions so that the slide guide may be stopped at the positions shown in the following table.

Side guide

positioning roll color and marking

While/marking A

(for A/B)

Black/marking L

(for inch)

Slide guide stop position

Using 1 groove Using 2 grooves

A4R A4R

LTRR

LTRR A4R

LTRR

T02-203-04

F02-203-04

Slide guide positioningroll (black) Position used

Wait position

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2-22

2.3.5 Last Original Size DetectionThe last original size detection mechanism is executed by the post-separation sensor (S3).

The last original size detection mechanism takes place when the original is held in read

wait position. The mechanism uses the width detected by the initial original size detection

mechanism using the original width volume (VR1), and uses the post-separation sensor (S3)to find out the length of the original.

If the original is large size, the post-separation sensor (S3) emits light in response to the

reference intensity adjustment signal (SEPAJ), and its light-receiving segment detects the

light reflected by the original, and sends the original detection signal (P-SEP) to the ADF

controller PCB.

F02-203-05

Original trailing edge(small size)

Read wait position

Original trailing edge(large size)

ADF controller PCB

P-SEP

SEPAJ

S3

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2-23

The following table shows the default sizes that may be detected by the machine:

[AB-Configuration]

T02-203-05

[Inch-Configuration]

T02-203-06

Default sizeA5R

B5R

A5

A4R

B5

B4

A4

A3

Original width w (mm)148 w 164

164 w 195

195 w 235

235 w 267

267 w 297

Post-separation sensor (S3)OFF

ON

OFF

ON

OFF

ON

OFF

ON

Default size

STMT

LTRR

LGL

LTR

279.4 x 431.8mm

(11 x 17)

Original width w (mm)

140 w 235

235 w 297

Post-separation

sensor (S3)

OFF

ON

ON

OFF

ON

Large/small identifica-

tion sensor (PI3)

OFF

ON

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2-24

[AB/Inch-Configuration]

*1: The A4R/LTRR identification sensor (PI3) turns on in the range between 197 mm and

214 mm in terms of the width of an original.

T02-203-07

Default size

A5R

B5R

A5

A4R

STMT

LTRR

LGL

B5

B4LTR

279.4 x 431.8mm

(11 x 17)

A4

A3

Original width

w (mm)

148 w 164

164 w 195

195 w 235

235 w 267

267 w 287

287 w 297

Post-separa-

tion sensor

(S3)

OFF

ON

OFF

ON

OFF

ON

ON

OFF

ONOFF

ON

Large/small

identification

sensor (PI3)

OFF

ON

A4R/LTRR iden-

tification sensor

(PI4)

ON*1

OFF

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2-25

2.3.6 Checking Originals When Printing Originals of Different Widths or inExtra-Length Mode

When printing originals of different widths or in extra-length mode, the originals are iden-

tified as being large size or small size with reference to the state of the post-separation sen-

sor (S3) with an original held in read wait position. The detection is based solely on the

length of the original, and is executed within the feed path.

a.Post-Separation Sensor (S3) Is Off (small size)

The distance over which the original has moved is checked based on the number of

clock pulses from the feed motor (M2) between when the post-separation sensor turns off

(passage of the trailing edge) and when the original is held in wait position.

b.Post-Separation Sensor (S3) Is On (large size)

The distance of feed is detected based on the number of clock pulses from the feed mo-tor (M2) between when the read sensor (S2) turns on and the read sensor (S2) turns off.

F02-203-06

Original trailing edge (small size)

Read wait position

Original trailing edge (large size)

S3

S2

M2

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2-26

2.4 Original Pickup/Separation2.4.1 Basic Sequence of Pickup Operations

When the Start key is pressed while originals are placed on the original tray, the following

takes place to pickup up the originals:

a.Pickup

The pickup motor (M1) rotates in reverse, and the pickup clutch (CL1) turns on. As a

result, the stopper and the pickup roller unit move down to rotate the pickup roller. The

separation plate and the separation pad are used to prevent double-feeding of originals.

F02-204-01

b. Arching

The pickup motor (M1) is stopped so that the original is butted against the registration

roller and is made to arch, thereby removing any skew.

F02-204-02

Registrationroller

Arching

CL1

M1

CL1

M1

CL1

M1

Pickup roller unit

Original

Stopper Separation pad Separation plate

Pickup roller unit

Original

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2-27

c. Feeding

The pickup motor (M1) and the feed motor (M2) rotate clockwise, and the original is

moved to read wait position. When the original reaches read wait position, the pickup mo-

tor (M1) and the feed motor (M2) stop.

F02-204-03

d.Stream Reading

When the leading edge of an original reaches read wait position, the image leading edge

signal is sent to the host machine to start stream reading, in which the host machines scan-

ner is held in place and originals are slid over the copyboard glass for scanning. The re-

sults of reading are stored in the host machines memory.

F02-204-04

M1M2

Feed roller

Read wait position

Feed roller

Scanning lamp

Read glass

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2-28

2.4.2 Pickup Unit and StopperThe pickup unit consists of a pickup roller and a feed roller. When the Start key is pressed

or the original pickup signal is generated, the pickup motor (M1) starts to rotate in reverse,

and the pickup clutch (CL1) turns on.

At the same time, the stopper and the pickup unit move down, and the pickup roller andthe feed roller rotate to move the original. To prevent double-feeding, the separation pad and

the separation plate are used to ensure proper separation.

F02-204-05

M1

Sheets

Separation pad

Separation plate

Feed roller

Gear

Pickup clutch (CL1)

Pickup rollers

Stopper

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2-29

2.4.3 Timing of PickupSequence of Operations (small size)

F02-204-06

Original set Start key ON

Original pickup signal input

Pickup/feed Read

Original setsensor (PI5)

Registration 1papersensor (PS1)

Pickup motor(M1)

Feed motor(M2)

Image leadingedge signal

Read sensor(S2)

Pickup clutch(CL1)

Arching Read wait

CCW CW

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2-30

2.4.4 Controlling the Pickup Motor (M1)The following figure shows how the pickup motor (M1) is controlled. The pickup motor is

a 4-phase stepping motor, and its control circuit has the following mechanisms:

Turning on and off the motor.

Controlling the direction of rotation of the motor.Controlling the speed of rotation of the motor.

F02-204-07

The CPU (IC1) on the ADF controller PCB receives commands and print mode data (ra-

tio, mode of operation, timing, etc.) from the host machine, and sends drive pulses to the

main motor based on the types of data.

Signal notation Description

MODE Excitation mode settingCLK Reference clock

CW/CCW Rotation direction setting

RESET System reset

V-REF Reference current setting

T02-204-01

IC10

MotorDriver

+24V

A

A*

B

B*

M1

J10MODE

CLK

3

41

5

6

2

IC1CPU CW/CCW

RESET

V-REF

ADF controller PCB

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2-31

2.5 Reversal2.5.1 Operations

The reversal mechanism operates to turn over originals from their first side to their second

side or from their first side to their second side; these two operations are virtually identical,

and the discussions that follow are based on turning originals from their first side to their

second side.

a.Picking Up the 1st Side

The feed roller rotates using the drive of the feed motor (M2), and the 1st side is read.

To move the original, the delivery reversing roller rotates using the drive of the delivery

reversal motor (M3), and the original is moved to the delivery assembly.

The locking solenoid (SL2) turns on in reference to the end of reading operation, and the

delivery reversing roller becomes locked to let the original move.

F02-205-01

b.Reversal/Feed 1

When the trailing edge of the original moves past the delivery reversal sensor (S1), the

delivery reversal motor (M3) stops. Immediately thereafter, it starts to rotate in reverse to

move the original to the registration roller 2.

F02-205-02

M3SL2

M2

Feed roller

S1 S1

Delivery reversing roller

Registration roller 2

S1 S1

M3SL2

M3SL2

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2-32

c. Reversal/Feed 2

The feed motor (M2) rotates, and the original is moved to read wait position; the origi-

nal will have been turned over by this time. Then, reading, delivery, and feed operations

will take place.

F02-205-03

2.5.2 Sequence of OperationsReversing an Original (small size)

F02-205-04

M2

Read wait position

Feed roller

Start key ONOriginal pickup signal input

Pickup/feed Read

Original set sensor(PI5)


Pickup motor (M1)

Feed motor(M2)

Read sensor(S2)

Reverse wait

CW CCW

Delivery reversalsensor (S1)

Delivery reversalmotor (M3)

CW CCW

Reverse

Locking solenoid(SL2)

Read wait

Arch

Arch


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2-33

2.6 Feeding and Delivering Originals2.6.1 Operations

When an original has been read in stream reading mode on the copyboard glass, it is

moved as follows to the original delivery assembly.

a.Moving the Original

The locking solenoid (S2) turns on, and the delivery lower reversing roller locks to the

delivery upper reversing roller. The feed roller rotates, and the original after moving past

read position is moved to the delivery reversing roller.

F02-206-01

b.Delivery to the Original Delivery Tray

The original is delivered to the original delivery assembly by the delivery reversing

roller driven by the delivery reversal motor (M3) rotating in clockwise direction.

F02-206-02

M3SL2

Read position

Feed roller



M3SL2

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2-34

2.6.2 Sequence of OperationsSequence of Operations (delivery of small-size sheets)

F02-206-03


Pickup/feed Read

Original set sensor(PI5)


Pickup motor (M1)

Feed motor (M2)

Read sensor (S2)

Read wait

CCW CW

Delivery reversalsensor (S1)

Delivery reversalmotor (M3)

Delivery

Locking solenoid(SL2)

Standby

Delivery end

Arching


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2-35

2.6.3 Controlling the Feed Motor (M2)The following figure shows the circuit used to control the feed motor, which is a 4-phase

stepping motor. The circuit has the following functions:



F02-206-04

The CPU (IC1) on the ADF controller PCB receives print mode data (ratio, mode of op-

eration, timing, etc.) from the host machine, and sends drive pulses to the read motor based

on the data.

The read motor is a stepping motor, and its direction and speed of rotation are controlled

by changing the sequence and the frequency of drive pulses (A, A*, B, B*).


MODE 1 Excitation mode setting

MODE 2 Excitation mode settingCW/CCW Rotation direction setting

CLK Phase switch clock

ENB Output cut-off

RESET* System reset

V-REF Reference current setting

T02-206-01

IC8

Motor

Driver

+24V

A

A*

B

B*

M2

J9MODE1

MODE2

CW/CWB

3

4

1

5

6

2

CLK

ENB

RESET*

V-REF

IC1CPU

ADF controller PCB

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2-36

2.6.4 Controlling the Delivery Reversal Motor (M3)The following figure shows the circuit used to control the delivery motor (M1), which is a

4-phase stepping motor. The circuit has the following mechanisms:



F02-206-05

The CPU (IC1) on the ADF controller PCB receives print mode data (ratio, mode of op-eration, timing, etc.) from the host machine, and sends drive pulses to the main motor based

on the data.

The main motor is a stepping motor, and the direction and speed of its rotation are con-

trolled by changing the sequence and the frequency of drive pulses (A, A*, B, B*).


V-REF* Reference current setting

T02-206-02

IC13

Motor

Driver

+24V

A

A*

B

B*

M3

J8A

A*

B7

8

3

6

5

4

V-REF*

IC1CPU

B*

REFA*

REFB*

ADF controller PCB

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2-37

2.7 Controlling the Fan2.7.1 Outline

The machine is equipped with a single fan (FM1), which is used to cool the ADF control-

ler PCB.

F02-207-01

The following signals are used to control the fan:

[1]cooling fan drive signal; when the signal goes 1, the fan starts to rotate.

[2]cooling fan lock detection signal; when the fan locks, the signal goes 1.

Sequence of Operations

F02-207-02

E412 (cooling fan rotation error)

It is indicated if the lock signal (FLCK) is generated 100 msec or more

while the cooling fan is being driven.

FM1CPU(IC1)

FAN[1]

FLCK[2]

+24V+5V

ADF controller PCB

Cooling fan

1

2

3

J1124V

0V

FLCK


INTR SCFW SCRV LSTR STBY

Cooling fan(FM1)

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2-38

3 Jam

The machine uses the sensors shown in F02-301-03 to check for an original jam. The

ADF controller PCB detects a jam in relation to the presence/absence of an original over aspecific sensor at such times as stored in its ROM in advance.

When a jam is detected, the machine sends the data to its host machine in the form of a

code:

A jam occurring in the machine is indicated by the following two ways:

Host machines service mode screen

LEDs on the ADF controller PCB

Service Mode Screen of the Host Machine

F02-301-01

LEDs on the ADF Controller PCB

F02-301-02

'1' indicates a jamin the machine.

Jam codes; see Table2-301 and later.

PSW1

LED4LED2

LED3LED1

DSW1

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2-40

T02-301-02

: off : flashing (at 160-msec intervals)

x=1: pickup of 1st original x=0: pickup of 2nd and subsequent originals

Jam

code00x5

00x6

00x7

00x8

00x9

LED indi-

cator

Sen-

sorS2

S2

S1, S2

S1, S2

PI2

Condition

The read sensor (S2) does not detect an

original a specific feed from registration

2 position (10 mm in front of the regis-

tration roller 2) after separation.

The read sensor (S2) does not detect an

original a specific feed after the start of

feed from registration roller 2 position

after reversal.

The read sensor (S2) detects an original

a specific feed after the start of feedfrom read wait position.

The read sensor (S2) detects an original

a specific feed after the start of feed

from read wait position when large/

small identification is done in mixed

size mode.

In single-sided mode, the delivery rever-

sal sensor (S1) does not detect an origi-

nal a specific feed after the read sensor

(S2) turns on.

In double-sided mode, the delivery re-

versal sensor (S1) does not detect an

original at the end of reading.

In single-sided or double-sided mode,

the delivery sensor (S1) detects an origi-

nal a secific feed after the delivery sen-

sor (S1) turns on while idle reversal is

taking place.

In double-sided mode, the delivery re-versal sensor (S1) detects an original a

specific feed after the read sensor (S2)

turns off.

While idle reversal is taking place, the

delivery reversal sensor (S1) detects an

original a specific feed after the read

sensor (S2) turns off.

The ADF is opened during operation

(drive system at rest).

Jam type

Read sensor de-

lay

Read sensor

stationary

Delivery rever-

sal sensor delay

Delivery rever-

sal sensor sta-

tionary

User ADF open

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2-41

T02-301-03

: off : flashing (at 160-msec intervals)

x=1: pickup of 1st original x=0: pickup of 2nd and subsequent originals

Jam

code00xA

00xB

00xC

00xD

00xE

00xF

LED indi-

cator

Jam type

ADF open

User cover

open

Cover open

Initial station-

ary

Pickup fault

Timing fault

Sen-

sorPI2

SW2

SW2

PI1, S1

,S2, S3

PI15

S2

Condition

The ADF is opened during operation

(drive system in operatioin).

The upper cover is opened during op-

eration (drive system at reset).

The upper cover is opened during op-

eration (drive system in operatioin).

Paper is detected in the path when the

first sheet is picked up.

The pickup signal is received for 2 sec

while no original exists ion the original

pickup tray.

The next original is moved to registra-

tion 2 before reading ends.

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2-42

4 Power Supply

The following figure shows an outline of the machines power supply system.

The machines power supply receives two type of 24V power (24 VP, 24 VL) from its hostmachine.

The 24VP supply is mostly used for loads, and is cut off when the upper cover is opened.

If an overcurrent starts to flow into the circuit, the circuit breaker (CB1) will turn on to

cut the power supply, thereby protecting the circuit.

The 24VL supply is converted to 5V power by the IC11, and is sent to sensors and is also

used to drive the controller PCB.

F02-401-01

CB1

DC5V Power Supply

IC11

6

2J1

J3

24VP

24V

CRSW

CRSW*

24VL 5V

24VMotorClutchSolenoid

Sensor

Hostmachine

ADF controller PCB

Cover openswitch (SW1)

3 2 1J2

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CHAPTER 3

MECHANICAL SYSTEMS

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3-1

1 Basic Construction

1.1 External Covers

[1] Front cover[2] Rear cover

[3] Feeder cover

[4] AD controller cover

[5] Left lower cover

[6] Original pickup tray

[7] Original delivery assembly

[8] Slide guide

F03-101-01

Remove the covers as needed to clean,

inspect, or repair the inside of the machine.

1.1.1 Detaching the Machine1) Turn off the host machine.

2) Disconnect the machines communica-tion cable [1] from its host machine.

F03-101-02

[3]

[8]

[4]

[6]

[1]

[7]

[5]

[2]

[1]

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3-2

3) Peel up the rubber cover [2], and re-

move the two screws [3]; then, detach

the angle guide metal plate [4].

F03-101-03

4) Remove the two stop screws [5], and

remove the screw [6] equipped with awasher.

5) Slide the machine as shown, and lift it

to detach.

F03-101-04

[2]

[4][3]

[2]

[5]

[6]

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3-3

1.1.2 Removing the Front Cover1) Open the feeder cover [1], and remove

the mounting screw [2].

F03-101-05

2) Remove the two mounting screws [3],

and detach the front cover [4] as shown.

F03-101-06

1.1.3 Removing the Rear Cover1) Open the feeder cover, and remove the

mounting screw [1].

F03-101-07

[1]

[2]

[3]

[4]

[1]

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3-4

2) Lift the original pickup tray, and re-

move the mounting screw [2]; then, de-

tach the rear cover [3].

F03-101-08

1.1.4 Removing the Feeder Cover1) Remove the front cover.

2) Remove the mounting screw [1] and po-

sitioning pin [2]; then, detach the feeder

cover [3].

F03-101-09

1.1.5 Removing the ADF Controller Cover1) Remove the mounting screw [1], and

detach the controller cover [2].

F03-101-10

[2]

[3]

[2][3]

[1]

[1]

[2]

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3-5

1.1.6 Removing the Inside Cover1) Open the feeder cover.


and slide the inside cover [2] to the

right to detach.

F03-101-11

1.1.7 Removing the Left Lower Cover1) Open the ADF.

2) Remove the front cover and the rear

cover.


and detach the left lower cover [2].

F03-101-12

1.1.8 Removing the Original Delivery Assembly1) Remove the front cover and the rear

cover.2) Remove the three mounting screws [1]

from the front of the machine.

F03-101-13

[1]

[2]

[1]

[2]

[1][1]

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3-6

3) Open the original pickup tray, and re-

move the two mounting screws [2].

F03-101-14

4) Remove the two mounting screws [3]

from the back of the machine.

F03-101-15

5) Open the machine, and slide the origi-

nal delivery assembly [4] as shown to

detach.

F03-101-16

[2]

[3]

[3]

[4]

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3-7

2 Drive System

2.1 Drive Assembly

2.1.1 Removing Pickup Motor1) Remove the rear cover.

2) Disconnect the connector [1].

3) Remove the two screws [2], and detach

the pickup motor [3].

F03-201-01

2.1.2 Removing the Feed MotorIt is very important to note the differences

in procedure whenever you must replace the

feed motor and its timing belt:

When using the same feed motor and its

timing belt.

When using a new feed motor and its

timing belt.

a.If you are using the same feed motor

and its timing belt,

1) Remove the rear cover.



and detach the feed motor [3] and the

timing belt [4].

F03-201-02

When mounting the feed motor,

be sure to attach the timing belt

[4] on the pulley [5] of the mo-

tor correctly.

[1] [2]

[2] [3]

[2] [4]

[1][3] [5]

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3-8

b. If you are using a new feed motor and

its timing belt,

1) Remove the rear cover.


3) Remove the two tension springs [2].4) Loosen the two mounting screws [3],

and slide the adjusting plate [4] down.

F03-201-03

5) Remove the two mounting screws [5],and detach the feed motor [6] and the

timing belt [7].

When mounting the tension

spring [2], be sure to tighten the

mounting screw [3] while keep-

ing the mounting screws [3] on

the adjusting plate [4] loose.

F03-201-04

[3]

[2]

[4]

[1]

[5] [7]

[6]

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3-9

2.1.3 Removing the Delivery Reversal Motor1) Remove the rear cover.

2) Disconnect the connector [1], and free

the harness from the guide [2].

3) Remove the two mounting screws [3],and detach the feed motor [4].

When attaching the delivery re-

versal motor, make sure that the

gear of the motor is engaged

with the transmission gear.

F03-201-05

2.1.4 Removing the Drive Unit1) Remove the rear cover and the inside

cover.2) Remove the faston [1], and disconnect

the three connectors [2].

3) Remove the five reuse bands [3], and

free the harness from the locking sup-

port [4].

F03-201-06

[1]

[3]

[3]

[4][2]

[1]

[2][2][3]

[3]

[4]

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3-10

4) Remove the six mounting screws [5].

5) Free the harness from the wire saddle

[6]; then, detach the drive unit [7].

F03-201-07

When mounting the drive unit,

be sure that the spring [8] and

the arm are as shown . In addi-

tion, check to make sure that thearm [9] on the drive side is

above the pin [10].

F03-201-08

F03-201-09

[5]

[5]

[6]

[7]

[8][10]

[9]

[10]

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3-11

3 Feed System

3.1 Feed System

3.1.1 Removing the Feed System1) Remove the inside cover.

2) Remove the two resin E-rings [1] and

two bushings [2]; then, detach the

pickup roller unit [3].

F03-301-01

3.1.2 Removing the Pickup Roller/Feed Roller1) Remove the pickup roller unit. (See p.

3-11.)

2) Remove the three resin E-rings [1], and

detach the pickup roller support plate

[2].

The pin [3] will come off; take

care not to lose it.

F03-301-02

[1]

[1]

[2]

[2]

[3]

[1]

[1]

[3]

[2]

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3-12

3) Remove the feed roller [4].

4) Remove the resin E-ring [5], and re-

move the pickup roller [6].

Pay attention to the orientationof the pickup roller and the feed

roller.

Be sure to mount the separation

guide [7] so that the wider side

of the plastic film [8] is toward

the feed roller.

F03-301-03

3.1.3 Removing the Separation Plate/Separation Pad1) Remove the pickup roller unit.


and detach the separation plate [2].

F03-301-04

3) Slide the separation pad [3] as shown to

detach.

F03-301-05

[3][8]

[7]

[4]

[6]

[5]

[1][2]

[3]

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3-13

3.1.4 Removing the Registration Lower Roller1) Remove the front cover, rear cover, and

inside cover

2) Remove the drive unit. (See p. 3-9)

3) Remove the two screws [1], and detachthe pre-registration guide [2].

F03-301-06

4) Holding it as shown, free the front of

the C guide [3], and slide the rear from

the shaft to detach.

F03-301-07

[1]

[2]

[3]

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3-14


move the bushing [5].

F03-301-08


move the gear [7] and the bushing [8].

7) Remove the registration lower roller [9].

F03-301-09

[4][5]

[6]

[7]

[8]

[9]

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3-15

3.1.5 Removing the Registration Upper Roller1) Remove the front cover and the feeder

cover.


and detach the cover [2].

F03-301-10

3) Remove the mounting screw [3], and

detach the support plate [4]; then, de-

tach the registration upper roller [5].

F03-301-11

[1]

[2]

[5]

[3]

[4]

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3-16

3.1.6 Removing the Registration Roller 21) Remove the front cover and the feeder

cover.



F03-301-12

3) Remove the mounting screw [3] and the

support plate [4]; then, detach the regis-

tration roller 2 [5].

F03-301-13

[1]

[2]

[5][3]

[4]

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3-17

3.1.7 Removing the Feed Large Roller1) Open the machine, and remove the front

cover, rear cover, and left lower cover.


and detach the platen guide [2].3) Detach the machine from its host ma-

chine.

Be sure to detach the machine

from its host machine before

starting the following steps.

F03-301-14

4) Remove the C guide.

5) Remove the drive unit. (See p. 3-9)

6) Remove the four mounting screws [3],

and detach the feed motor unit [4].

F03-301-15

[1]

[2]

[3]

[3]

[4]

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3-18

7) Remove the six mounting screws [5],

and detach the hinge assembly [6].

F03-301-16

8) Remove the resin E-ring [7] at the front

and the bearing [8].

F03-301-17

[5]

[6]

[8]

[7]

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3-20

4) Remove the C guide [3].

F03-301-20


move the busing [5].

F03-301-21

[3]

[4] [5]

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3-21

6) Remove the hook, and detach the gear

[6].

7) Remove the resin E-ring [7] and the

bushing [8].

8) Remove the delivery upper reversingroller [9].

F03-301-22

3.1.9 Removing the Lead Roll 21) Remove the front cover, rear cover, and

original delivery assembly.

2) Open the stopper [1], and detach the

lead roll 2 [2].

F03-301-23

[6]

[9]

[7]

[8]

[1][2]

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3-23

3) Remove the resin E-ring [4] and the

bushing [5].

4) Remove the bushing [6], and detach the

lead roll 1 unit [7].

F03-301-26

5) Open the stopper [8], and detach the

lead roll 1 [9].

F03-301-27

[4]

[5]

[6]

[7]

[7]

[8] [9]

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3-24

3.1.12 Replacing the C Guide Sheet1) Open the feeder cover, and detach the C

guide. (See p. 3-13)

2) Peel off the C guide sheet [1], and clean

the area with lint-free paper moistenedwith alcohol.

3) Attach the new C guide sheet [2] as

shown on the right.

When attaching it, be sure to

butt both its vertical and hori-

zontal sides against the stops.

F03-301-28

[1]

[2]

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3-25

4 Electrical System

4.1 Electrical System

4.1.1 ADF Controller PCB1) Remove the rear cover.

2) Disconnect all connectors from the ADF

controller PCB; then, free the harness

[2] from the locking support [1].


F03-401-01

4) Remove the mounting screw [4]; then,

push the locking support [5] to detach

the front side of the ADF controller

PCB [6].

F03-401-02

[1]

[2]

[3]

[4]

[5]

[6]

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3-26

5) Shift the ADF controller PCB [6] in the

direction of the arrow to detach.

F03-401-03

4.1.2 Removing the Delivery Reversal Sensor1) Open the feed cover.

2) Remove the screw [1] and the stepped

screw [2], and detach the C guide [3].

F03-401-04

[6]

[1][2]

[3]

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3-27



F03-401-05

4) Remove the mounting screw [6], and

disconnect the connector [7]; then, de-

tach the delivery reversal sensor [8].

F03-401-06

[4]

[5]

[6]

[7]

[8]

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3-28

4.1.3 Removing the Read Sensor1) Remove the left lower cover.

2) Disconnect the connector [1], and re-

move the hook [2]; then, detach the

guide [3].3) Remove the mounting screws [4], and

disconnect the connector [5]; then, de-

tach the read sensor [6].

F03-401-07

4.1.4 Removing the Post-Separation Sensor1) Open the feeder cover.

2) Remove the inside cover.

3) Disconnect the connector [1], and re-

move the mounting screw [2]; then, de-

tach the post-separation sensor [3].

F03-401-08

[1]

[2]

[3][4]

[5]

[6]

[2]

[3][1]

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3-29

4.1.5 Removing the Cooling Fan1) Remove the rear cover.

2) Disconnect the connector [1] from J11

of the ADF controller PCB; then, free

the harness from the harness guide [2].3) Remove the two mounting screws [3],

and detach the cooling fan [4].

Be user to orient the cooling fan

so that the marking on it (indi-

cating the direction of current)

matches the marking on the

machine's side metal plate.

F03-401-09

4.1.6 Removing the Locking Solenoid1) Remove the front cover.

2) Disconnect the connector [1], and de-

tach the two reuse bands [2].


and detach the hook [4] of the arm.

4) Detach the locking solenoid [5].

The parallel pin [6] will come

off when the locking solenoid is

detached; take care not to lose

it.

F03-401-10

[1]

[2]

[3]

[4]

[1][2]

[2]

[3][4]

[5]

[6]

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3-30

4.1.7 Removing the Pickup Clutch1) Remove the rear cover and the inside

cover.

2) Disconnect the connector [1], and de-

tach the harness from the locking sup-port [2].


and detach the bushing [4] and the

mounting base [5].

F03-401-11

4) Remove the stopper [6].

5) Remove the bushing [7], and detach the

clutch [8].

Memo

When installing the pickup

clutch, may be made more eas-ily to install it after removing

the pick up roler unit.

F03-401-12

After mounting it, check tomake sure that the arm [9] of

the pickup clutch is above the

pin [10].

F03-401-13

[1][2]

[3][3]

[4] [5]

[6]

[7]

[8]

[9]

[10]

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3-31

4.1.8 Removing the Open/Close Switch1) Remove the rear cover.

2) Open the feeder cover.

3) Remove the faston [1].

4) Remove the mounting screw [2], anddetach the open/close switch [3].

F03-401-14

4.1.9 Removing the Original Width Volume1) Lift the original pickup tray.

2) Remove the three mounting screws [1],and detach the cover [2].

F03-401-15

[1]

[2]

[3]

[1]

[2]

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3-32

3) Disconnect the three connectors [3], and

free the harness [4] from the harness

guide.


and detach the original width volume[6].

F03-401-16

[ Mounting the Original Width Volume ]

1) Fully spread the side guide [1].

2) Turn the gear [2] counterclockwise

(viewing from the gear), and mount the

volume so that the two arrows [3]

match.

F03-401-17

[5]

[5]

[3]

[3][4]

[6]

[1]

[1] [2]

[3]

[3]

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CHAPTER 4

MAINTENANCE AND INSPECTION

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CHAPTER 4 MAINTENANCE AND INSPECTION

4-1

1 Periodically Replaced Parts

The machine does not have parts that must be replaced on a periodical basis.

2 Durables

Some parts of the machine may require replacement once or more because of wear or

damage. Replace them as needed while referring to the table of estimated lives (expressed in

terms of the numbers of originals picked up, which may be checked in the host machine's

service mode).

As of June 2000

No.

1

2

3

4

5

Part name

Pickup roller

Feed roller

Separati

Documents

ir 6000 DADF-D1sm