service manual - canon global

SERVICEMANUAL

DADF-AA1

COPYRIGHT ©2010 CANON INC. CANON DADF-AA1 REV. 0 PRINTED IN U.S.A.

MARCH 10, 2010REV. 0

ApplicationThis manual has been issued by Canon Inc. for qualified persons to learn technical theory, installation, maintenance, and repair

of products. This manual covers all localities where the products are sold. For this reason, there may be information in this

manual that does not apply to your locality.

CorrectionsThis manual may contain technical inaccuracies or typographical errors due to improvements or changes in products. When

changes occur in applicable products or in the contents of this manual, Canon will release technical information as the need

arises. In the event of major changes in the contents of this manual over a long or short period, Canon will issue a new edition

of this manual.

The following paragraph does not apply to any countries where such provisions are inconsistent with local law.

TrademarksThe product names and company names used in this manual are the registered trademarks of the individual companies.

CopyrightThis manual is copyrighted with all rights reserved. Under the copyright laws, this manual may not be copied, reproduced or

translated into another language, in whole or in part, without the written consent of Canon Inc.

CautionUse of this manual should be strictly supervised to avoid disclosure of confidential information.

COPYRIGHT © 2001 CANON INC.Printed in Japan

Introduction

i

Symbols UsedThis documentation uses the following symbols to indicate special information:

Symbol Description

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

Indicates an item requiring care to avoid electric shocks.

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 the topic in question.

Indicates an item of reference assisting the understanding of the topic in question.

Provides a description of a service mode.

Provides a description of the nature of an error indication.

Memo

REF.

Introduction

ii

The following rules apply throughout this Service Manual:1. Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with refer-

ence to the timing of operation.In the diagrams, represents the path of mechanical drive; where a signal name accompanies the symbol , the arrow indicates thedirection of the electric signal.The expression "turn on the power" means flipping on the power switch, closing the front door, and closing the delivery unit door, which results insupplying the machine with power.

2. In the digital circuits, '1'is used to indicate that the voltage level of a given signal is "High", while '0' is used to indicate "Low".(The voltage value,however, differs from circuit to circuit.) In addition, the asterisk (*) as in "DRMD*" indicates that the DRMD signal goes on when '0'.In practically all cases, the internal mechanisms of a microprocessor cannot be checked in the field. Therefore, the operations of the microprocessorsused in the machines are not discussed: they are explained in terms of from sensors to the input of the DC controller PCB and from the output of theDC controller PCB to the loads.

The descriptions in this Service Manual are subject to change without notice for product improvement or other purposes, and major changes will be com-municated in the form of Service Information bulletins.All service persons are expected to have a good understanding of the contents of this Service Manual and all relevant Service Information bulletins and beable to identify and isolate faults in the machine."

Contents

Contents

Chapter 1 Specifications

1.1 Product Specifications ................................................................................................................................... 1- 11.1.1 Specifications ........................................................................................................................................... 1- 1

1.2 Names of Parts ............................................................................................................................................... 1- 31.2.1 External View............................................................................................................................................ 1- 31.2.2 Cross Section ........................................................................................................................................... 1- 3

Chapter 2 Installation

2.1 Unpacking and Checking the Components ................................................................................................ 2- 12.1.1 Unpacking and Checking the Contents................................................................................................ 2- 1

2.2 Installation Procedure .................................................................................................................................... 2- 32.2.1 Points to Note When Turning OFF the power of Host Machine ....................................................... 2- 32.2.2 Installing the Stream Reading Glass .................................................................................................... 2- 32.2.3 Installing the DADF.................................................................................................................................. 2- 42.2.4 Affixing Labels .......................................................................................................................................... 2- 5

2.3 Making Adjustments ....................................................................................................................................... 2- 62.3.1 Adjusting the Height ................................................................................................................................ 2- 62.3.2 Turning On the Host Machine ................................................................................................................ 2- 82.3.3 Adjusting the Perpendicularity ............................................................................................................... 2- 82.3.4 Adjusting the Read Position ................................................................................................................... 2- 82.3.5 Adjusting the Horizontal Registration ................................................................................................... 2- 92.3.6 Adjusting the Trailing Edge Registration .............................................................................................. 2- 92.3.7 Adjusting the Magnification .................................................................................................................... 2- 92.3.8 Adjusting the White Level ....................................................................................................................... 2- 9

2.4 Attaching the Hinge Covers ........................................................................................................................ 2- 102.4.1 Attaching the Hinge Covers ................................................................................................................. 2- 10

2.5 Cleaning ......................................................................................................................................................... 2- 102.5.1 Cleaning the Stream Reading Glass .................................................................................................. 2- 10

2.6 Checking the Operation ............................................................................................................................... 2- 102.6.1 Operation Check .................................................................................................................................... 2- 10

Chapter 3 Functions

3.1 Basic Construction.......................................................................................................................................... 3- 13.1.1 Outline of Electric Circuits ...................................................................................................................... 3- 1

3.2 Basic Operation............................................................................................................................................... 3- 13.2.1 Drive Mechanism and Signals ............................................................................................................... 3- 13.2.2 Outline of Operation Modes ................................................................................................................... 3- 23.2.3 Forward Pickup/Delivery (Single-sided Document -> Simplex Printing) Operation ...................... 3- 33.2.4 Forward Pickup/Reverse Delivery (Double-sided Document -> Duplex Printing) Operation ...... 3- 5

3.3 Document Detection....................................................................................................................................... 3- 83.3.1 Outline ....................................................................................................................................................... 3- 8

Contents

3.3.2 Document Presence/Absence Detection ............................................................................................. 3- 93.3.3 Detection of Last Document................................................................................................................... 3- 93.3.4 Initial Document Size Detection ............................................................................................................ 3- 9

3.4 Document Pickup/Separation ..................................................................................................................... 3- 103.4.1 Basic Pickup Operation ........................................................................................................................ 3- 103.4.2 Pickup Unit and Stopper ....................................................................................................................... 3- 113.4.3 Pickup Timing ......................................................................................................................................... 3- 123.4.4 Pickup/Feed Motor (M1) Control ......................................................................................................... 3- 12

3.5 Document Reversing.................................................................................................................................... 3- 133.5.1 Basic Operation...................................................................................................................................... 3- 133.5.2 Operation Sequence ............................................................................................................................. 3- 14

3.6 Document Feeding/Delivery........................................................................................................................ 3- 143.6.1 Basic Operation...................................................................................................................................... 3- 143.6.2 Release Operation................................................................................................................................. 3- 153.6.3 Operation Sequence ............................................................................................................................. 3- 163.6.4 Release motor (M2) Control................................................................................................................. 3- 16

3.7 Detecting Jams ............................................................................................................................................. 3- 173.7.1 Jams ........................................................................................................................................................ 3- 17

3.8 Power Supply ................................................................................................................................................ 3- 173.8.1 Power Supply ......................................................................................................................................... 3- 17

3.9 Stamp Operation........................................................................................................................................... 3- 183.9.1 Outline (with the Stamp Unit-B1)......................................................................................................... 3- 18

3.10 Fan ................................................................................................................................................................ 3- 183.10.1 Fan Operation ...................................................................................................................................... 3- 18

Chapter 4 Parts Replacement Procedure

4.1 Points to Note on Disassembly and Reassembly...................................................................................... 4- 14.1.1 Points to Note When Turning Off the Main Power of the Host Machine......................................... 4- 1

4.2 External Covers............................................................................................................................................... 4- 14.2.1 Front Cover ............................................................................................................................................... 4- 1

4.2.1.1 Removing the Front Cove ............................................................................................................... 4- 14.2.2 Rear Cover ................................................................................................................................................ 4- 1

4.2.2.1 Removing the Rear Cover ............................................................................................................... 4- 14.2.3 Feeder Cover ............................................................................................................................................ 4- 1

4.2.3.1 Removing the Feeder Cover........................................................................................................... 4- 14.3 Drive System ................................................................................................................................................... 4- 1

4.3.1 Pickup Motor ............................................................................................................................................. 4- 14.3.1.1 Removing the Pickup/Feed Motor.................................................................................................. 4- 1

4.3.2 Engaging Motor ........................................................................................................................................ 4- 24.3.2.1 Removing the Release Motor ......................................................................................................... 4- 2

4.3.3 Timing Belt/Pulley..................................................................................................................................... 4- 24.3.3.1 Removing the Timing Belt ............................................................................................................... 4- 2

4.3.4 Pickup Clutch ............................................................................................................................................ 4- 34.3.4.1 Removing the Pickup Clutch.......................................................................................................... 4- 3

4.3.5 Registration Clutch................................................................................................................................... 4- 34.3.5.1 Removing the Registration Clutch ................................................................................................. 4- 3

4.4 Document Feeding System........................................................................................................................... 4- 44.4.1 Pickup Roller Unit ..................................................................................................................................... 4- 4

Contents

4.4.1.1 Removing the Pickup Roller Unit ....................................................................................................4- 44.4.1.2 Precaution about Pickup Roller Unit Installation ..........................................................................4- 4

4.4.2 Pickup Roller/Separation Roller..............................................................................................................4- 44.4.2.1 Removing the Pickup Roller/Feed Roller.......................................................................................4- 4

4.4.3 Separation Plate/Separation Pad ...........................................................................................................4- 54.4.3.1 Removing the Separation Pad ........................................................................................................4- 5

4.4.4 Upper Registration Roller ........................................................................................................................4- 54.4.4.1 Points to Note When Replacing the Upper Registration Roller .................................................4- 5

4.4.5 Lower Registration Roller ........................................................................................................................4- 54.4.5.1 Removing the Lower Registration Roller .......................................................................................4- 5

4.4.6 Delivery Reversing Roller (upper) ..........................................................................................................4- 74.4.6.1 Removing the Upper Delivery Reversal Roller .............................................................................4- 7

4.4.7 Read Roller 1 .............................................................................................................................................4- 84.4.7.1 Removing the Read Roller 1 ...........................................................................................................4- 8

4.4.8 Read Roller 2 .............................................................................................................................................4- 94.4.8.1 Removing the Read Roller 2 ...........................................................................................................4- 9

4.4.9 Platen Roller ............................................................................................................................................4- 114.4.9.1 Removing the Platen Roller ...........................................................................................................4- 11

4.4.10 Feeding Unit...........................................................................................................................................4- 124.4.10.1 Removing the Feed Unit...............................................................................................................4- 12

4.4.11 Feed Roller Guide .................................................................................................................................4- 134.4.11.1 Exchanging the Feed Roller Guide ...........................................................................................4- 13

4.4.12 Document Tray ......................................................................................................................................4- 134.4.12.1 Removing the Document Tray.....................................................................................................4- 13

4.5 Electrical System ...........................................................................................................................................4- 144.5.1 Fan ............................................................................................................................................................4- 14

4.5.1.1 Removing the Fan ...........................................................................................................................4- 144.5.1.2 Precaution about Fan Installation .................................................................................................4- 14

4.5.2 Inner Sensor of Feed Unit .....................................................................................................................4- 144.5.2.1 Removing the Sensor in the Feed Unit ........................................................................................4- 14

4.5.3 Document Width Volume .......................................................................................................................4- 164.5.3.1 Removing the Relay PCB ..............................................................................................................4- 16

4.5.4 Cover Open/Closed Sensor ..................................................................................................................4- 164.5.4.1 Removing the Cover Open/Closed Sensor .................................................................................4- 16

4.5.5 Document Set Sensor ............................................................................................................................4- 164.5.5.1 Removing the Document Set Sensor ...........................................................................................4- 16

4.5.6 Document Length sensor.......................................................................................................................4- 174.5.6.1 Removing the Document Length Sensor.....................................................................................4- 17

4.5.7 Last Document Detection Sensor.........................................................................................................4- 174.5.7.1 Removing the Last Document Detection Sensor .......................................................................4- 17

4.5.8 Release Motor HP Sensor .....................................................................................................................4- 174.5.8.1 Removing the Release Motor HP Sensor ...................................................................................4- 17

4.5.9 Timing Sensor .........................................................................................................................................4- 174.5.9.1 Removing the Timing Sensor ........................................................................................................4- 17

4.5.10 Pressurization Solenoid .......................................................................................................................4- 174.5.10.1 Removing the Pressurization Solenoid ......................................................................................4- 17

4.5.11 LED PCB ................................................................................................................................................4- 184.5.11.1 Removing the LED PCB ...............................................................................................................4- 18

4.5.12 ADF Driver PCB ....................................................................................................................................4- 18

Contents

4.5.12.1 Removing the ADF Driver PCB .................................................................................................. 4- 18

Chapter 5 Maintenance

5.1 User Maintenance........................................................................................................................................... 5- 15.1.1 Cleaning .................................................................................................................................................... 5- 15.1.2 Replacement ............................................................................................................................................ 5- 1

5.2 Maintenance and Inspection ......................................................................................................................... 5- 25.2.1 Periodically Replaced Parts.................................................................................................................... 5- 2

5.2.1.1 Periodically Replaced Parts ........................................................................................................... 5- 25.2.2 Durables..................................................................................................................................................... 5- 2

5.2.2.1 Durables ............................................................................................................................................. 5- 25.2.3 Periodical Servicing ................................................................................................................................. 5- 2

5.2.3.1 Periodic Service Items ..................................................................................................................... 5- 25.3 Adjustment ....................................................................................................................................................... 5- 4

5.3.1 Basic Adjustment...................................................................................................................................... 5- 45.3.1.1 Outline ................................................................................................................................................ 5- 45.3.1.2 Adjusting the Height ......................................................................................................................... 5- 45.3.1.3 Adjusting the Perpendicularity ........................................................................................................ 5- 55.3.1.4 Adjusting the Read Position ............................................................................................................ 5- 65.3.1.5 Adjusting the Horizontal Registration ............................................................................................ 5- 65.3.1.6 Adjusting the Trailing Edge Registration....................................................................................... 5- 65.3.1.7 Adjusting the Magnification ............................................................................................................. 5- 65.3.1.8 Adjusting the White Level ................................................................................................................ 5- 7

5.4 Outline of Electrical Components................................................................................................................. 5- 85.4.1 Electric Parts Layout and Functions ..................................................................................................... 5- 8

5.5 Variable Resistors (VR), Light-Emitting Diodes (LED), and Check Pins by PCB................................. 5- 95.5.1 Outline ....................................................................................................................................................... 5- 9

Chapter 6 Error Code

6.1 Service Error Code ......................................................................................................................................... 6- 16.1.1 Error Code List ......................................................................................................................................... 6- 1

6.2 Jam Codes....................................................................................................................................................... 6- 16.2.1 Jam Code List .......................................................................................................................................... 6- 1

Chapter 1 Specifications

Contents

Contents

1.1 Product Specifications ................................................................................................................................................... 1-11.1.1 Specifications ............................................................................................................................................................................... 1-1

1.2 Names of Parts ............................................................................................................................................................... 1-31.2.1 External View............................................................................................................................................................................... 1-31.2.2 Cross Section................................................................................................................................................................................ 1-3

Chapter 1

1-1

1.1 Product Specifications

1.1.1 Specifications0024-6980

Item Specifications Remarks

Document pickup method Automatic pickup and delivery

Document loading direction Face-up

Document type Sheet

Document loading position Aligned to center

Document separation method Upper separation

Document weight

Single A/B type: 42-128g/ m2or lessInch type: 50-128g/m2 or lessDouble-sided: 50-128g/m2or lessColor document: 64-128g/m2or lessMixed-size: 50-128g/m2or lessMixed-size (color document): 64-128g/m2 or less

Document longer than 432 mm: Single-sided one sheetFeed: 60- 90g/ m2

Document size

AB type: B6/A5/A5R/B5/B5RA4/A4R/B4/A3

STMT, B6: Cross feed only

INCH type: STMT/LTR/LTRR/LGL/LDR

Others: 8K/16K

Document width: 148- 297 mm

Document length (longitudinal):128- 432(630)mm

The document in () is held by the operator.

Document tray capacity

S-size: 100 sheets (S-size: A4, A4R, B5, B5R, A5,A5R, B6, LTR, LTRR, STMT)

(50-80g/m2 paper)

L-size: 100 sheets (L-size: A3, 11 x 17, B4, LGL)

Document heavier than 80g/ m2: Weight equivalent

Folded document: 10 mm or less

Mixed-size document lighter than 50g/ m2: 10 sheets

Document read method Stream reading

Document processing mode - Single-sided document processing- Double-sided document processing

Document size recognition Detected by photo interrupter/volume on pickup tray Longitudinal: Two sensorsLateral: One sensor +Volume

Display unit The LED lights when document is detected.

Jam recovery Not supported.

Completion stamp function Supported

Mixed document function

Same types of paper can be mixed. Mixing of different types of paper:64-128g/m2 Mixing of same types of paper: Equivalent to that in continuous feed mode is assured. Mixing of different types of paper: Document processing speed (productivity) is not assured.

Different types of paper can be mixed.When different types of paper are mixed, normal paper feed is not assured.

Chapter 1

1-2

Book document The pressure plate hinge must move vertically with respect to the book document.

(The document thickness must be 50 mm or less.)

Document feed speed 100% read: 253 mm/s

Document processing speed (A4/LTR)

Single-sided copy: 51 ipmSingle-sided SEND: 51 ipm

Power supply Supplied from host machine Power system: 24 VDCLogic system: 13 VDC

Weight Approx. 7.9kg

Dimensions 565 (W) X 510 (D) X 136 (H) mm

Operating environment

Temperature range

Same as that of host machine

Humidity range Same as that of host machine

The foregoing specifications are subject to change for product improvement.

Item Specifications Remarks

Chapter 1

1-3

1.2 Names of Parts

1.2.1 External View0024-6981

F-1-1

1.2.2 Cross Section0024-6982

F-1-2[1] Lower registration roller[2] Upper registration roller[3] Feed roller[4] Separation pad unit[5] Pickup roller[6] Document supply tray[7] Upper delivery reversal roller[8] Lower delivery reversal roller[9] Read roller 2(lower)[10] Read roller 2(upper)[11] Platen roller[12] White sheet[13] Read roller[14] Read roller 1(lower)[15] Read roller 1(upper)

[1] Feeder cover [4] Document supply tray

[2] Rear cover [5] Document delivery tray

[3] Slide guide [6] Front cover

[4][2] [3]

[5][6][1]

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

[9] [7][10][11] [8][12][13][14][15]

Chapter 2 Installation

Contents

Contents

2.1 Unpacking and Checking the Components.................................................................................................................... 2-12.1.1 Unpacking and Checking the Contents ........................................................................................................................................ 2-1

2.2 Installation Procedure .................................................................................................................................................... 2-32.2.1 Points to Note When Turning OFF the power of Host Machine ................................................................................................. 2-32.2.2 Installing the Stream Reading Glass ............................................................................................................................................ 2-32.2.3 Installing the DADF..................................................................................................................................................................... 2-42.2.4 Affixing Labels ............................................................................................................................................................................ 2-5

2.3 Making Adjustments...................................................................................................................................................... 2-62.3.1 Adjusting the Height .................................................................................................................................................................... 2-62.3.2 Turning On the Host Machine...................................................................................................................................................... 2-82.3.3 Adjusting the Perpendicularity..................................................................................................................................................... 2-82.3.4 Adjusting the Read Position......................................................................................................................................................... 2-82.3.5 Adjusting the Horizontal Registration.......................................................................................................................................... 2-92.3.6 Adjusting the Trailing Edge Registration..................................................................................................................................... 2-92.3.7 Adjusting the Magnification......................................................................................................................................................... 2-92.3.8 Adjusting the White Level ........................................................................................................................................................... 2-9

2.4 Attaching the Hinge Covers......................................................................................................................................... 2-102.4.1 Attaching the Hinge Covers ....................................................................................................................................................... 2-10

2.5 Cleaning....................................................................................................................................................................... 2-102.5.1 Cleaning the Stream Reading Glass ........................................................................................................................................... 2-10

2.6 Checking the Operation ............................................................................................................................................... 2-102.6.1 Operation Check......................................................................................................................................................................... 2-10

Chapter 2

2-1

2.1 Unpacking and Checking the Components

2.1.1 Unpacking and Checking the Contents0024-3811

1) Make sure that none of the following parts is missing.

F-2-1

[12][9]

[2]

[2]

[1]

[8]

[7]

[6][8]

[7]

[6]

[4]

[5]

[3]

[10]

[11]

[13]

[11]

[B][A]

[12]

[C] [D]

[13]

[E] [F] [G] [H]

Chapter 2

2-2

* The labels No. 11, 12 and 13 are different in a kind and the number of sheets by the type of DADF. Refer to the following table to confirm them.T-2-1

[1] DADF main unit 1 unit [8] Stepped screw (M4X10) 2 pcs.[2] Hinge cover 2 pcs. [9] Binding screw (M3X6) 1 pc.[3] Glass positioning plate 1 pc. [10] Flat head screw (M4X6) 1 pc.[4] Glass holder 1 pc. [11]* Finger pinch caution label 1 1 pc.[5] Stream reading glass 1 pc. [12]* Finger pinch caution label 2 1 pc.[6] Face sticker 2 pcs. [13]* Glass cleaning/lamp caution label 1 pc.[7] Stepped screw (M5X6) 2 pcs.

INCH/A type A type INCH/AB/K type[11] Finger pinch caution label 1 [A] --- Yes Yes

[B] Yes --- Yes[12] Finger pinch caution label 2 [C] --- Yes Yes

[D] Yes --- Yes[13] Glass cleaning/lamp caution label [E] --- --- Yes

[F] --- Yes ---[G] Yes --- ---[H] --- --- Yes

Chapter 2

2-3

2.2 Installation Procedure

2.2.1 Points to Note When Turning OFF the power of Host Machine

0024-3812

F-2-2

F-2-3

2.2.2 Installing the Stream Reading Glass0024-4921

1) When the host machine is equipped with the copyboard cover, detach thecopyboard cover.

2) Remove the 2 screws [1] to detach the reader front cover [2].

F-2-4

3) Remove the screw [1] retaining the front side of the reader left cover. Re-move the 2 flat-head screws [2] to detach the reader upper left cover [3].(The removed reader upper left cover is no longer necessary.)

F-2-54) Mount the supplied stream reading glass [1].

5) Mount the supplied glass posotioning plate [3] with the supplied flat-headscrew [4] pressing it against the stream reading glass.

F-2-6

CAUTION:Installation precautions are as follows.- Be careful not to allow foreign objects to enter the reader unit.- Do not stain the back side of the stream reading glass.

[1]

[1]

[2]

MEMO:The removed flat-head screws will be used later.

CAUTION:Mount the stream reading glass so that the sheet material affixed to the back side of the glass comes in the left side (so that the sheet material comes in contact with the reader frame).

[2]

[3]

[1]

[1]

[3]

[2]

[4]

Chapter 2

2-4

6) Pressing the projections [2] of the supplied glass holder [1] against theglass, mount the glass holder with the 2 flat-head screws (M4X6) [3] re-moved in Step 3).

F-2-77) Fix the the front side of the reader left cover with the screw.8) Attach the reader front cover. (two screws)

2.2.3 Installing the DADF0024-3670

1) Peel off 4 pieces of blind seal [1]. (The 4 pieces of blind seal are no longernecessary).

F-2-82) Affix 2 pieces of the supplied face stickers [1] over the hinge holes.

F-2-9

3) Install the supplied 2 stepped screws (M5X6) [1] at the upper rear of thereader.

F-2-104) Engage the hinges of the DADF with the stepped screws [1] from behindand slide them toward the front of the host machine.

F-2-11

MEMO:The DADF is weight about 10 kg.

[2]

[3]

[1]

[3]

[1]

[1]

CAUTION:When holding the DADF, be careful not to touch the platen roller [2].

[1]

[1]

[2]

Chapter 2

2-5

5) Secure the hinges with the supplied 2 stepped screws (M4X10) [1]. Securethe right hinge with the screw aligning the edge of the screw with themark-off line (long) [2].

F-2-126) Insert the flat-bladed screwdriver to the triangle mark of the cover to re-

move the reader rear small cover [1].

F-2-13

7) Peel off the blind sheet [1] from the reader rear cover. (The blind sheet isno longer necessary.)

F-2-148) Connect the three connectors [1] to the reader controller PCB, and then

secure the ground cable [2] using the supplied binding screw (M3X6) [3].9) Install the DADF harness so that the cable tie [4] fits in the groove of the

reader rear cover.

F-2-1510) Attach the reader rear small cover detached in step 6). (One screw)

2.2.4 Affixing Labels0024-4923

1) Open the DADF.2) Attach the supplied finger pinch caution label 2 [1] of the appropriate lan-

guage, if necessary.

F-2-16

[1]

[2]

[1]

[1]

[4]

[1]

[2]

[3]

CAUTIONTo avoid injury, do not place your hands

or fingers in this space.

[1]

Chapter 2

2-6

2) Affix the supplied glass cleaning/lamp caution label [1] of the appropriatelanguage to the reader front cover aligning with the mark-offline [2].

F-2-174) Close the DADF and move to the rear of the host machine.5) Attach the supplied finger pinch caution label 1 [1] of the appropriate lan-

guage to the DADF rear cover, if necessary.

F-2-18

2.3 Making Adjustments

2.3.1 Adjusting the Height0024-3816

1. Pre-checkCheck whether the front and rear document glass spacers provided underthe bottom of the DADF are in close contact with the document glasswhen the DADF is closed. If visual check is difficult, perform the check with reference to the nextand subsequent pages.

F-2-19

2. Checking the left hinge height1) Checking the rear-left height of the DADF

Set paper against the protrusions [1] of the stream reading glass in such amanner that the seat [2] of the stream reading glass is nearly hidden.

F-2-202) Pulling out the set paper

Pull out the paper in the direction of the arrow to check that you feel slightresistance.

F-2-21

MEMO:Insert a sheet of paper between the DADF stream reading glass and the document glass spacers (two) and pull out the sheet. It is recommended that slight resistance is felt when pulling out the sheet.

CAUTION:- Use plain paper.

[1] [2]

[1]

CAUTION:Set paper so that it does not reach the document reading area [3].

[1] [2] [3]

[1] [2] [3]

Paper

Chapter 2

2-7

3) Checking the front-left height of the DADFSet paper against the protrusions [1] of the stream reading glass in such amanner that the seat [2] of the stream reading glass is nearly hidden.



F-2-233. Adjustment Procedure* When the front or rear side is floating;

1) Adjust the left hinge height. 2) Adjust the right hinge height.3) Adjust or check the left hinge height.

* When both sides are floating;1) Adjust the left hinge height. 2) Adjust the right hinge height.3) Adjust the left hinge height. 4) Adjust or check the right hinge height.

4. Adjust the height of the left hinge.1) Adjust the height with the left hinge height adjusting screw [1].

* If the front spacer is floating, turn the adjusting screw clockwise to bringthe front spacer closer to the glass.

* If only the rear spacer or both front and rear spacers are floating, turn theadjusting screw counterclockwise to bring the rear spacer closer to theglass.

F-2-245. Check the height of the right hinge1) Close the DADF and check for the following;

- The bottom rib [1] of the DADF must be in contact with the documentglass holder (right) [2]. (There should be no clearance; A=0mm.)

- The document hold sheet [3] must be in contact with the document glass.

F-2-25


Paper

[1] [2] [3]

[1] [2] [3]

CAUTION:Loosen the lock nut [2] before adjustment, and tighten it after adjustment.

[2]

[1]

[1]

[2]

[3]

Chapter 2

2-8

[Right side view]

F-2-266. Adjust the height of the right hinge1) If the height is improper, adjust it with the right hinge adjusting screw [1].

* Turning the adjusting screw clockwise reduces the front-right side heightof the DADF.

* Turning the adjusting screw counter clockwise increases the front-rightside height of the DADF.

F-2-272) Check the height of the left hinge. If the height is inappropriate, adjust it

again.

2.3.2 Turning On the Host Machine0024-3817

1) Connect the power cable plug to the wall outlet.2) Turn on the main power switch.

2.3.3 Adjusting the Perpendicularity0024-3819

1) Load a test chart in the DADF to make a copy.

2) Check the perpendicularity at the leading edges of the test chart and copy.Measure dimensions A and B on the test chart and dimensions A' and B'on the copy. If it is not (A-B)=(A'-B'), go through Step 3) and later.

F-2-28

3) Loosen the screw to adjust the right hinge position.

F-2-29A'>B': Slide the hinge [1] forward [F].B'>A': Slide the hinge [1] backward [R].

F-2-304) Tighten the fixing screw loosened in Step 3).


MEMO:The test chart is printed on the back cover of the Installation Procedure (this manual). Copy it or clip it out.

A

[2]

[1]

[3]

[1] [2]

B

A

B’

A’A A

B B

Chart feeddirection Test chart copy

[1]

[1]

[F]

[R]

Chapter 2

2-9

2.3.4 Adjusting the Read Position0024-3821

1) Enter to the service mode.[Entering to Service Mode]Press the additional function key " ", the 2 key, the 8 keys and theadditional function key " " sequentially on the operation panel of thehost machine.

2) On the service mode screen, select the following notations in sequence.

1 #SCAN2 #SCAN READER3 #READER FUNCTION4 #FUNCTION INSTALL5 #INSTALL STRD-POS

3) Confirm the"STRD-POS" is displayed, and then press the OK key.Pressing the OK key will cause the scanner to start a scan; in severalseconds, the machine will end the auto adjustment of the read position,and then indicate "OK".

2.3.5 Adjusting the Horizontal Registration0024-3820

1) Place the test chart on the DADF tray and make a copy.2) Compare the copy with the test chart for the horizontal registration. If it is

improper, make the following adjustment.3) Enter to the service mode. On the service mode screen, select the follow-

ing notations in sequence.1 #SCAN2 #SCAN READER3 #READER ADJUST4 #ADJUST ADJ-XY5 #ADJ-XY ADJ-Y-DF

4) Confirm the "ADJ-Y-DF" is displayed, and then press the OK key tochange the setting value.

- If the image is displaced to the front, increase the value.- If the image is displaced to the rear, decrease the value.<Unit of the adjustment: 0.1 mm>

5) After changing the value, press the OK key to fix it.

2.3.6 Adjusting the Trailing Edge Registration0024-3822

1) Place the test chart on the DADF tray and make a copy.2) Compare the copy with the test chart for the trailing edge registration. If

it is improper, make the following adjustment.3) Enter to the service mode. On the service mode screen, select the follow-

ing notations in sequence.1 #SCAN2 #SCAN FEEDER3 #FEEDER ADJUST4 #ADJUST DOCST

4) Confirm the "DOCST"is displayed and press the OK key to change thesetting value.

- If the image is displaced to the leading edge, decrease the value.- If the image is displaced to the trailing edge, increase the value.<Unit of the adjustment: 0.1 mm>


2.3.7 Adjusting the Magnification0024-3823

1) Place the test chart on the DADF tray and make a copy.2) Compare the copy with the test chart in terms of the length of the image

in the feed direction. If it is improper, make the following adjustment.3) Enter to the service mode. On the service mode screen, select the follow-

ing notations in sequence.1 #SCAN2 #SCAN FEEDER3 #FEEDER ADJUST4 #ADJUST LA-SPEED

4) Confirm the "LA-SPEED" is displayed and press the OK key to changethe setting value.- If the image is shorter, increase the value. (so that the stream reading

speed will be reduced.)- If the image is longer, decrease the value. (so that the stream reading

speed will be increased.)<Unit of the adjustment: 0.1 %>


2.3.8 Adjusting the White Level0024-3824

1) Prepare the blank paper which user always uses and place it on the docu-ment glass, then close the DADF.

2) Enter to the service mode. On the service mode screen, select the follow-ing notations in sequence.1 #SCAN2 #SCAN READER3 #READER FUNCTION4 #FUNCTION CCD5 #CCD DF-WLVL1

3) Confirm the "DF-WLVL1" is displayed and press the OK key. Automaticadjustment starts, if it ends successfully, the screen shows "OK".After the adjustment, press the OK key.

4) Remove the paper from the document glass and place it on the DADF tray.5) Select "DF-WLVL2" on the screen and press the OK key.

The machine executes the automatic adjustment with the duplex streamreading operation. When the adjustment ends successfully, the machineindicates "OK" on the screen.After the adjustment, press the OK key.

6) Prepare the blank paper which user always uses and place it on the docu-ment glass, then close the DADF.

7) Select "DF-WLVL3" on the screen and press the OK key.Automatic adjustment starts, if it ends successfully, the screen shows"OK".After the adjustment, press the OK key.

8) Remove the paper from the document glass and place it on the DADF tray.

MEMO:If it is necessary to shift the service mode to the upper tier, press the additional function key.

CAUTION:If the machine fails the auto adjustment and indicates "NG", go through the following:(1) Clean the platen roller of the DADF and the stream reading glass of the host machine; then, execute the auto adjustment once again.(2) If the auto adjustment operation still fails, enter the service mode and make adjustments manually:#SCAN>#SCAN_READER>#READER_ADJUST>#ADJUST_ADJ-XY>#ADJ-XY_STRD-POSTo find the optimum value, change the "STRD-POS" value checking the actual copy image.

MEMO:If it is necessary to change the sign (+/-), press the ssterisk key of the numeric keys.

MEMO:If it is necessary to change the sign (+/-), press the ssterisk key of the numeric keys.

MEMO:This is the adjustment to match the white level of the image made in the stream reading mode with the white level of the image made in the book mode. If this adjustment has not been made, the following will likely occur.- Inappropriate background density in images made in the stream reading mode- Wrong speck detection in the stream reading mode

MEMO:This system incorporates a 4-line CCD sensor which is used for two types of white level adjustments: a monochromic adjustment and a color adjustment. "DF-WLVL1" and "DF-WLVL2" are for the monochromic adjustment, and "DF-WLVL3" and "DF-WLVL4" are for the color adjustment.

MEMO:If the monochromic adjustment fails, perform Steps 1) to 5) again.

Chapter 2

2-10

9) Select "DF-WLVL4" on the screen and press the OK key.The machine executes the automatic adjustment with the duplex streamreading operation. When the adjustment ends successfully, the machineindicates "OK" on the screen.

10) Press the reset key to end the service mode.

2.4 Attaching the Hinge Covers

2.4.1 Attaching the Hinge Covers0024-3825

1) Attach the supplied 2 hinge covers [1].

F-2-31

2.5 Cleaning

2.5.1 Cleaning the Stream Reading Glass0024-3828

1) Open the DADF.2) Hardly squeeze the cloth soaked with water. Using this cloth, wipe the

stream reading glass clean.

F-2-32

2.6 Checking the Operation

2.6.1 Operation Check0024-3826

1) Check the following operations:- Check the single-sided and double-sided copy operations- If the machine has the stamp unit for the FAX, check the stamping

operation in FAX mode.

MEMO:If the monochromic adjustment fails, perform Steps 6) to 9) again.

[1]

Chapter 2

2-11

Chapter 3 Functions

Contents

Contents

3.1 Basic Construction......................................................................................................................................................... 3-13.1.1 Outline of Electric Circuits .......................................................................................................................................................... 3-1

3.2 Basic Operation ............................................................................................................................................................. 3-13.2.1 Drive Mechanism and Signals...................................................................................................................................................... 3-13.2.2 Outline of Operation Modes......................................................................................................................................................... 3-23.2.3 Forward Pickup/Delivery (Single-sided Document -> Simplex Printing) Operation .................................................................. 3-33.2.4 Forward Pickup/Reverse Delivery (Double-sided Document -> Duplex Printing) Operation .................................................... 3-5

3.3 Document Detection ...................................................................................................................................................... 3-83.3.1 Outline.......................................................................................................................................................................................... 3-83.3.2 Document Presence/Absence Detection....................................................................................................................................... 3-93.3.3 Detection of Last Document ........................................................................................................................................................ 3-93.3.4 Initial Document Size Detection .................................................................................................................................................. 3-9

3.4 Document Pickup/Separation ...................................................................................................................................... 3-103.4.1 Basic Pickup Operation.............................................................................................................................................................. 3-103.4.2 Pickup Unit and Stopper ............................................................................................................................................................ 3-113.4.3 Pickup Timing ............................................................................................................................................................................ 3-123.4.4 Pickup/Feed Motor (M1) Control .............................................................................................................................................. 3-12

3.5 Document Reversing ................................................................................................................................................... 3-133.5.1 Basic Operation .......................................................................................................................................................................... 3-133.5.2 Operation Sequence.................................................................................................................................................................... 3-14

3.6 Document Feeding/Delivery........................................................................................................................................ 3-143.6.1 Basic Operation .......................................................................................................................................................................... 3-143.6.2 Release Operation ...................................................................................................................................................................... 3-153.6.3 Operation Sequence.................................................................................................................................................................... 3-163.6.4 Release motor (M2) Control ...................................................................................................................................................... 3-16

3.7 Detecting Jams............................................................................................................................................................. 3-173.7.1 Jams............................................................................................................................................................................................ 3-17

3.8 Power Supply............................................................................................................................................................... 3-173.8.1 Power Supply ............................................................................................................................................................................. 3-17

3.9 Stamp Operation .......................................................................................................................................................... 3-183.9.1 Outline (with the Stamp Unit-B1).............................................................................................................................................. 3-18

3.10 Fan ............................................................................................................................................................................. 3-183.10.1 Fan Operation........................................................................................................................................................................... 3-18

Chapter 3

3-1

3.1 Basic Construction

3.1.1 Outline of Electric Circuits0024-6983

Electric circuits of this machine are controlled by the main controller PCB. The main controller PCB detect the input signals from sensors to output the signals thatdrive DC loads such as motors, solenoids, clutches, and fans at the predetermined timings. The ADF driver PCB does not have a memory area; data such as the dataused in the service mode is stored in main controller PCB.

F-3-1

J512

J8141

MaincontrollerPCB

Motor

Sensor

Solenoid

Reader relay PCB

ADF driver PCB

Clutch

Fan

Chapter 3

3-2

3.2 Basic Operation

3.2.1 Drive Mechanism and Signals0024-6984

This machine is a document feeder exclusively for stream reading.This machine uses one motor and two electromagnetic clutches to pick up and feed document sheets. This machine uses a release motor to prevent the trailing edge of a document from swaying.

The drive mechanism and signals of this machine are as follows:

F-3-2[1] ADF driver PCB[2] Release motor drive signal[3] Release motor HP detection signal[4] Document detection signal[5] Document detection signal[6] Document detection signal[7] Pickup/feed motor drive signal[8] Document detection signal[9] Document set signal[10] Pressurization solenoid drive signal[11] Stamp solenoid drive signal[12] Last document detection signal[13] Paper size (width) identification signal 2 [14] Paper size (width) identification signal 1[15] Paper size (length) identification signal 2[16] Paper size (length) identification signal 1

Name (symbol) Function

Pickup/feed motor (M1) Feeds documents.

Release motor (M2) Prevents a document from swaying.

Pickup clutch (CL1) Drives the pickup clutch to transmit the power of the pickup/feed motor to the pickup roller unit.

Registration clutch (CL2) Drives the registration clutch to transmit the power of the pickup/feed motor to the registration roller.

Stamp solenoid (SL1) Drives the stamp mechanism.

Pressurization solenoid (SL2) Shifts the delivery lower roller after reversal of the dual-sided document, etc.

[1]

[2]

J12

SR

11

SR

2

SR

1

SR

4

SR

3

SR

5

SR

7

PS

1 SR

8

SR

9

J5 J5 J6J1 J1 J1

J7 J7

J2 J2

SL2

SL1

J3 J3 J3 J3J4

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

[12]

[15]

[16]

M2 M1

CL1CL2

Chapter 3

3-3

3.2.2 Outline of Operation Modes0024-6985

This machine has four operation modes. This machine operates in the operation mode specified by the host machine to perform printing. Operation mode names,brief outline of operations, ad associated print modes are given in the following table:

3.2.3 Forward Pickup/Delivery (Single-sided Document -> Simplex Printing) Operation0024-6986

The document flows as shown below.

Simplex read operation (when two document sheets are placed)

F-3-3

Operation mode name Outline of operation Associated print mode

[1] Forward pickup/delivery Picks up, reads, and then delivers an document. Single-sided document -> Simplex printingSingle-sided document -> Duplex printing (This operation is performed for documents with the same/different width.)

[2] Forward feed/reverse delivery

Picks up, reads, reverses, and delivers a document.

Double-sided document -> Duplex printingDouble-sided document -> Simplex printing (This operation is performed for documents with the same/different width.)

MEMO:This operation is performed for all single-sided documents irrespective of whether document widths are the same or different.

Document

Pickup of first document sheet/Formation of loop

Waiting for reading of thefirst document sheet

Reading of first document sheet

Pickup of second document sheet

Formation of second document

To next page

Chapter 3

3-4

F-3-4

Completion of reading offirst document shee

Completion of reading of second document sheet

Completion of delivery of first document sheet

Completion of delivery of second document sheet

End of job

Start of reading of second document sheet

Chapter 3

3-5

3.2.4 Forward Pickup/Reverse Delivery (Double-sided Document -> Duplex Printing) Operation0024-6987

The document flows as shown below.

Duplex read operation (when two document sheets are placed)

F-3-5

MEMO:This operation is performed for all double-sided documents irrespective of whether document widths are the same or different.

Pickup and formation of loop offirst document sheet

Waiting for reading ofthe first document

Start of reading of front side offirst document sheet

End of reading of firstdocument sheet

Stop after feeing the first document sheet to reversal position

Document

To next page

Chapter 3

3-6

F-3-6

Removal of registration loop of reverse side of first document sheet and release of re-pickup and delivery roller

Feed of first document sheet and start of reading of reverse side

Stop after feeding the first documentsheet to reversal position

Idle feed of first document sheet

Removal of idle registration loop offirst document sheet and release ofre-pickup and delivery roller

End of reading of reverse side of first document sheet and pressurization of delivery roller

To next page

Chapter 3

3-7

F-3-7

Start of separation of second document sheet and pressurization of delivery roller

Start of reading of top side of second document sheet

End of reading of front side of second document sheet

Stop after feeding the second documentsheet to reversal position

Delivery of first document sheet Removal of registration loop of reverseside of second document sheet and release of re-pickup/delivery roller

To next page

Chapter 3

3-8

F-3-8

3.3 Document Detection

3.3.1 Outline0024-6988

This machine detects a document using either of the two methods depending on the print mode.- Normal print mode (other than mixed size print mode and banner paper mode)- Mixed size print mode and banner paper mode

a. Normal print mode (other than mixed size print mode and banner paper mode)In the normal print mode, the following four document detection functions are used:

Function Description Sensor used (symbol)

Document presence/absence detection

Detects whether there is a document on the document pickup tray.

Document set sensor (SR5)

Last document detection Detects whether the document being picked up is the last one.

Last document detection sensor (SR7)

Initial document size detection

- Longitudinal direction Detects the length of the document placed on the document pickup tray.

Document length sensor 1/2 (SR9/SR8)

- Lateral direction Detects the width of the document placed on the document pickup tray.

Document width sensor 1/2 (PS2/PS1)

Start of reading of reverse sideof second document sheet

End of reading of reverse side of second document sheet

Stop after feeding the second document sheet to reversal position

Removal of idle reversal registration loop of second document sheet and release of re-pickup/delivery roller

Pressurization of second document sheet delivery roller

Completion of delivery of second document sheet and end of job

Chapter 3

3-9

b. Mixed size print mode and banner paper modeIn the mixed size print mode and banner paper mode, the following three document detection functions are used:

3.3.2 Document Presence/Absence Detection0024-6989

The document placement sensor (SR5) detects presence/absence of a document on the document tray.When a document is placed on the document tray, the detection lever moves the light shielding plate to allow light to pass thorough the photo interrupter. Thus, thedocument placement sensor (SR5) generates an document detection signal (EMPTY_SEN) to notify the host machine that an document has been placed on thedocument tray via the ADF drive PCB.

F-3-9

3.3.3 Detection of Last Document0024-6990

The last document detection sensor (SR9) and document placement sensor (SR5) detect whether the document being picked up is the last one.When the trailing edge of the last document has moved past the last document detection lever, the detection lever moves the light shielding plate to allow light passthrough the photo interrupter. Thus, the last document detection sensor (SR9) generates a last document detection signal (LAST_SEN). When the last documenthas moved past the document sensor (SR5), a document absence signal (EMPTY_SEN) is generated to notify the host machine that the document being picked upis the last one via the ADF drive PCB.

F-3-10

Function Description Sensor used (symbol)

Document presence/absence detection

Detects whether there is a document on the document pickup tray.

Document set sensor (SR5)

Last document detection Detects whether the document being fed is the last one.

Last document detection sensor (SR7)

Document length detection Detects the document length according to the distance from the position where the read sensor (SR2) turns on to the position where the read sensor (SR2) turns off.

Read sensor(SR2)

ADF driver PCB

DocumentDetection lever

EM

PT

Y_S

EN

SR5

ADF driver PCB

Document Detectionlever

EM

PT

Y_S

EN

LAS

T_S

EN

SR5

SR9

Chapter 3

3-10

3.3.4 Initial Document Size Detection0024-6991

The document length sensor 1 (SR8) and document length sensor 2 (SR8) detect the longitudinal size of the document placed on the document tray, and the docu-ment width sensor 1 (PS2) and the document width sensor 2 (PS1) detect the lateral size of the document.When a document is placed on the document tray, detection levers of the two document length sensors move the light shielding plate to prevent light from passingthrough the photo interrupter.If the slide guide is adjusted to the document size, the two document width sensors mounted inside the document tray are shielded by the light shielding plate mount-ed at the bottom of the slide guide.Document sizes are determined by the combination of the ON/OFF states of document length sensors, the combination of ON/OFF states of document width sensor.

F-3-11The following table shows the relationship among length detection sensor signals, document widths, and initial document sizes. 1. AB type

T-3-1

2. Inch typeT-3-2

Sensor name

Document width sensor 1(PS2)


Document length sensor 1(SR9)


Size

A3 ON ON ON ONB4 OFF ON ON ON

A4R OFF OFF OFF ONB5R ON OFF OFF ONA4 ON ON OFF OFF

A5R ON OFF OFF OFFB5 OFF ON OFF OFFA5 OFF OFF OFF OFFB6 ON OFF OFF OFF

Sensor name





Size

11 x 17 OFF ON ON ONLGL OFF OFF ON ON

LTRR OFF OFF OFF ONLTR OFF ON OFF OFF

STMT OFF OFF OFF OFF

SR7

SR9

SR8

PS1

PS2

Chapter 3

3-11

3.4 Document Pickup/Separation

3.4.1 Basic Pickup Operation0024-6992

With a document placed on the document tray, pressing the print start key will pick up the document in the following manner.a. Pickup operationWhen the pickup/feed motor (M1) turns in reverse direction, the pickup roller unit lowers to rotate the pickup rollers, thus feeding the document. The stopper risesin conjunction with the pickup roller unit. The separation sheet and pad are used to prevent multiple sheets from being fed together.

F-3-12b. Formation of loopWhile the pickup/feed motor (M1) is turning in the reverse direction, the document is fed against the stationary registration roller to form a loop because the regis-tration clutch is not driven, thus preventing the document from skewing.

F-3-13c. FeedThe pickup/feed motor (M1) turns in the reverse direction to drive the registration clutch (CL2), thus allowing the registration roller to feed the document. The readroller feeds the document to the read wait point. When the document reaches the read wait point, the pickup/feed motor (M1) stops.

F-3-14

CL1

M1 M1

CL1Document

Pickup roller unit

Stopper Separation sheetSeparation pad

Pickup roller unit

Formation of loop

Registration roller

Read roller 1

Read wait point

Registration roller

CL2

M1

Chapter 3

3-12

d. Stream readingWhen the leading edge of the document reaches the reading point, an image leading edge signal is sent to the host machine to start stream reading. "Stream reading"is a scan mode in which a document is moved on the optical system's glass using the platen roller.The read image is stored in the memory of the host machine.

F-3-15

3.4.2 Pickup Unit and Stopper0024-6993

The pickup unit consists of a pickup roller and feed roller. When the print start key is pressed or a document pickup signal is input, the pickup/feed motor (M1)turns in the reverse direction to lower the pickup unit via the pickup clutch (CL1), turning the pickup roller and feed roller to feed the document. The stopper risesin conjunction with the pickup roller unit. When the document is picked up, the separation pad and separation plate prevent multiple sheets from being fed together.When the document is fed to the registration roller to be looped, the registration clutch (CL2) operates and the power of the pickup/feed motor is transmitted to theregistration roller to feed the document.

F-3-16

Platen roller

LED

Read roller 2

Read glass

M1

Pickup clutch (CL1)

Pickup/feed motor

Stopper arm

Stopper arm

Document

Pickup roller

Separation pad unit

Feed roller

Chapter 3

3-13

3.4.3 Pickup Timing0024-6994

F-3-17

3.4.4 Pickup/Feed Motor (M1) Control0024-6995

The pickup/feed motor (M1) control circuit diagram is shown below. A 2-phase stepping motor is used to feed documents. This circuit mainly performs the follow-ing types of control:- Motor ON/OFF control- Motor rotation direction control- Motor speed control

F-3-18The pickup/feed motor of the ADF is controlled by the main controller PCB. The main controller PCB outputs drive pulses to the pickup/feed motor according tothe selected print mode (magnification, operation mode, timing, etc.).The pickup/feed motor is a stepping motor. Its rotation direction and speed are controlled by changing the order of drive pulses (A, /A, B, /B) and frequency.

Document set sensor(SR5)

Delivery reversal sensor(SR3)

Pickup/feed motor(M1)

Pickup clutch(CL1)

Timing sensor(SR4)

Registration sensor(SR1)

Registration clutch(CL2)

Read sensor(SR2)

Image leading edge signal

Document readingDocument separation/feed

Read stanby

Original placementStart key ONDocument pickup signal input

Loop formation

+24V

A

B

/B

/A

M1

J4

4

65

3

12

ADF driver PCB

Motordriver

Chapter 3

3-14

3.5 Document Reversing

3.5.1 Basic Operation0024-6996

There are two types of document reversal operation: one that is performed from the top to the reverse side of the document and the other that is performed from thereverse side to the top of the document. Since the basic operation methods are identical, only the reversal operation performed from the reverse side to the top isdiscussed below.

a. Top side pickupThe pickup/feed motor (M1) drives the read roller 1 and platen roller to scan the surface of the document. After completion of scanning, the read roller 2 and deliveryreversal roller feed the document to the delivery unit.

F-3-19b. Reversal/feed 1When the trailing edge of the fed document moves past the delivery reversal sensor (SR3), the pickup/feed motor stops. Immediately after this, the pickup/feedmotor starts turning in the reverse direction to feed the document to the registration roller, then it stops. At this time, the pressurization solenoid (SL2) turns on torelease the delivery reversal roller.

F-3-20c. Reversal/feed 2The pickup/feed motor turns to feed the document to the reading wait point and stops.Thus, the document has been reversed. Next, the document is picked up again and its reverse side is read, turning off the pressurization solenoid. After this, thedocument is reversed again, fed, and then delivered.

F-3-21

Platen rollerRead roller 2

Read roller 1

Delivery reversal rollerM1

SL2

M1

SL2

Delivery reversal sensor

M1

SL2

M1

SL2

SL2

SL2

M1

CL2

Reading wait positionRead roller 1

M1Delivery reversal roller

Registration roller

Chapter 3

3-15

3.5.2 Operation Sequence0024-6997

F-3-22

3.6 Document Feeding/Delivery

3.6.1 Basic Operation0024-6998

After completion of stream reading on the document glass, the document is delivered to the document delivery unit as discussed below.a. Document feed/deliveryAfter moving past the reading position, the document is fed by the read roller 2 and delivery reversal roller driven by the pickup/feed motor (M1) which is turningin the reverse direction. The delivery reversal roller is normally pressurized; the Shift solenoid (SL2) turns on only when the document is reversed for duplex print-ing.

F-3-23


Pressurization solenoid(SL2)



Pickup clutch(CL1)

Timing sensor(SR4)



Read sensor(SR2)


Document reversalDocument’sreverse sidereading


Read stanby loop formation

: Reverse rotation of motor

Original replacementStart key ONDocument pickup signal input

loop formation

SL2

SL2

M1M1 Delivery reversal roller

Reading position

Chapter 3

3-16

3.6.2 Release Operation0024-6999

When a document is read, the read roller 1 (lower driven rollers) are pressurized/released to prevent the training edge of the document from swaying.After separation of the document, the read roller 1 (lower driven rollers) are pressurized by the Release motor (M2) during formation of a registration loop.After lapse of the predetermined time since turning off of the document trailing edge registration sensor, the Release motor is driven to release the read roller 1(lower driven rollers).

F-3-24

F-3-25

3.6.3 Operation Sequence0024-7001

<Basic operation sequence>

F-3-26

Read roller 1

Release motor HP sensor

Release motor

Read roller 1 (lower rollers)

M2 M2




Pickup clutch(CL1)

Timing sensor(SR4)



Read sensor(SR2)


Documentdelivery

Read stanbyloop formation



Chapter 3

3-17

<Release operation sequence>

F-3-27

3.6.4 Release motor (M2) Control0024-7002

The Release motor (M2) control circuit diagram is shown below. The Release motor (M2) is a 2-phase stepping motor. This circuit mainly performs the followingtypes of control:- Motor ON/OFF control- Motor rotation direction control- Motor speed control

F-3-28The Release motor of the ADF is controlled by the main controller PCB. The main controller PCB outputs drive pulses to the Release motor according to the doc-ument feed timing. The Release motor is a stepping motor. Its rotation direction and speed are controlled by changing the order of drive pulses (A, /A, B, /B) and frequency.

Release motor(M2)

Release motor HP sensor(SR11)



Documentdelivery





Pickup clutch(CL1)

Timing sensor(SR4)



Read sensor(SR2)


M2

1

2

3

4

J12B

/B

/A

A

ADF driver PCB

Motordriver

Chapter 3

3-18

3.7 Detecting Jams

3.7.1 Jams0024-7003

This machine detects document jams using the sensors shown below. Document jam check timings are stored in the ROM on the reader controller PCB to checkwhether a jam has occurred according to presence/absence of a document at the relevant sensor position.When a jam occurs, the host machine stores its code.Jam codes can be checked by outputting a jam error log report in the service mode of the host machine.

F-3-29SR1: Registration sensorSR2: Read sensorSR3: Delivery reversal sensorSR5: Document set sensorSR6: Cover open/closed sensor

3.8 Power Supply

3.8.1 Power Supply0024-7004

The power supply lines are shown below.This machine is powered via two power supply lines (24 V and 5 V) from the host machine.

F-3-30

SR1

SR2

SR3

SR5

SR6

24V

5V 5V

24VJ11J9

Host machine

ADF driver PCB

Sensor

MotorSolenoid

FanClutch

Chapter 3

3-19

3.9 Stamp Operation

3.9.1 Outline (with the Stamp Unit-B1)0024-7005

If the stamp function is selected in the FAX mode of the host machine, the stamp solenoid drive signal received from the ADF driver PCB drives the stamp solenoid(SL1) to affix a stamp indicating that the document has been read or sent.

F-3-31In the stamp mode, the feed speed is set to 260 mm/s after completion of document reading. The document stops when it has been fed 14.6 mm since detection oftuning off of the delivery reversal sensor, where a stamp is affixed. The stamp solenoid drive time is 100 ms, and a stamp is affixed at the position which is about10 mm away from the trailing edge of paper.

F-3-32

MEMO:Fresh out of the package, the stamp cartridge is good for about 7,000 documents.

Sta

mp

sole

noid

driv

e si

gnal

ST

MP

_SO

L

ADF driver PCB

Document

Stamp solenoid(SL1)


Stamp solenoid (SL1)



Pickup clutch(CL1)

Timing sensor(SR4)



Read sensor(SR2)




Documentdelivery


3.10 Fan

3.10.1 Fan Operation0024-7007

The fan (FM1) mounted on this machine always operates at full speed from the time ADF starts to feed paper until paper delivery is completed and exhauststhe heat emitted by the ADF driver PCB and pickup/feed motor (M1). The air flow is shown below.

F-3-33

FM1

Chapter 4 Parts Replacement Procedure

Contents

Contents

4.1 Points to Note on Disassembly and Reassembly........................................................................................................... 4-14.1.1 Points to Note When Turning Off the Main Power of the Host Machine.................................................................................... 4-1

4.2 External Covers ............................................................................................................................................................. 4-14.2.1 Front Cover .................................................................................................................................................................................. 4-1

4.2.1.1 Removing the Front Cove ...............................................................................................................................................................................4-14.2.2 Rear Cover.................................................................................................................................................................................... 4-1

4.2.2.1 Removing the Rear Cover...............................................................................................................................................................................4-14.2.3 Feeder Cover ................................................................................................................................................................................ 4-1

4.2.3.1 Removing the Feeder Cover ...........................................................................................................................................................................4-14.3 Drive System ................................................................................................................................................................. 4-1

4.3.1 Pickup Motor................................................................................................................................................................................ 4-14.3.1.1 Removing the Pickup/Feed Motor ..................................................................................................................................................................4-1

4.3.2 Engaging Motor............................................................................................................................................................................ 4-24.3.2.1 Removing the Release Motor..........................................................................................................................................................................4-2

4.3.3 Timing Belt/Pulley ....................................................................................................................................................................... 4-24.3.3.1 Removing the Timing Belt..............................................................................................................................................................................4-2

4.3.4 Pickup Clutch ............................................................................................................................................................................... 4-34.3.4.1 Removing the Pickup Clutch .........................................................................................................................................................................4-3

4.3.5 Registration Clutch....................................................................................................................................................................... 4-34.3.5.1 Removing the Registration Clutch..................................................................................................................................................................4-3

4.4 Document Feeding System ............................................................................................................................................ 4-44.4.1 Pickup Roller Unit........................................................................................................................................................................ 4-4

4.4.1.1 Removing the Pickup Roller Unit...................................................................................................................................................................4-44.4.1.2 Precaution about Pickup Roller Unit Installation ...........................................................................................................................................4-4

4.4.2 Pickup Roller/Separation Roller................................................................................................................................................... 4-44.4.2.1 Removing the Pickup Roller/Feed Roller .......................................................................................................................................................4-4

4.4.3 Separation Plate/Separation Pad................................................................................................................................................... 4-54.4.3.1 Removing the Separation Pad .........................................................................................................................................................................4-5

4.4.4 Upper Registration Roller ............................................................................................................................................................ 4-54.4.4.1 Points to Note When Replacing the Upper Registration Roller......................................................................................................................4-5

4.4.5 Lower Registration Roller............................................................................................................................................................ 4-54.4.5.1 Removing the Lower Registration Roller .......................................................................................................................................................4-5

4.4.6 Delivery Reversing Roller (upper) ............................................................................................................................................... 4-74.4.6.1 Removing the Upper Delivery Reversal Roller ..............................................................................................................................................4-7

4.4.7 Read Roller 1................................................................................................................................................................................ 4-84.4.7.1 Removing the Read Roller 1...........................................................................................................................................................................4-8

4.4.8 Read Roller 2................................................................................................................................................................................ 4-94.4.8.1 Removing the Read Roller 2...........................................................................................................................................................................4-9

4.4.9 Platen Roller ............................................................................................................................................................................... 4-114.4.9.1 Removing the Platen Roller ..........................................................................................................................................................................4-11

4.4.10 Feeding Unit ............................................................................................................................................................................. 4-124.4.10.1 Removing the Feed Unit .............................................................................................................................................................................4-12

4.4.11 Feed Roller Guide .................................................................................................................................................................... 4-134.4.11.1 Exchanging the Feed Roller Guide ............................................................................................................................................................4-13

4.4.12 Document Tray......................................................................................................................................................................... 4-134.4.12.1 Removing the Document Tray....................................................................................................................................................................4-13

4.5 Electrical System ......................................................................................................................................................... 4-144.5.1 Fan.............................................................................................................................................................................................. 4-14

Contents

4.5.1.1 Removing the Fan......................................................................................................................................................................................... 4-144.5.1.2 Precaution about Fan Installation ................................................................................................................................................................. 4-14

4.5.2 Inner Sensor of Feed Unit .......................................................................................................................................................... 4-144.5.2.1 Removing the Sensor in the Feed Unit ......................................................................................................................................................... 4-14

4.5.3 Document Width Volume .......................................................................................................................................................... 4-164.5.3.1 Removing the Relay PCB............................................................................................................................................................................. 4-16

4.5.4 Cover Open/Closed Sensor ........................................................................................................................................................ 4-164.5.4.1 Removing the Cover Open/Closed Sensor ................................................................................................................................................... 4-16

4.5.5 Document Set Sensor ................................................................................................................................................................. 4-164.5.5.1 Removing the Document Set Sensor ............................................................................................................................................................ 4-16

4.5.6 Document Length sensor............................................................................................................................................................ 4-174.5.6.1 Removing the Document Length Sensor...................................................................................................................................................... 4-17

4.5.7 Last Document Detection Sensor............................................................................................................................................... 4-174.5.7.1 Removing the Last Document Detection Sensor.......................................................................................................................................... 4-17

4.5.8 Release Motor HP Sensor .......................................................................................................................................................... 4-174.5.8.1 Removing the Release Motor HP Sensor ..................................................................................................................................................... 4-17

4.5.9 Timing Sensor ............................................................................................................................................................................ 4-174.5.9.1 Removing the Timing Sensor ....................................................................................................................................................................... 4-17

4.5.10 Pressurization Solenoid............................................................................................................................................................ 4-174.5.10.1 Removing the Pressurization Solenoid....................................................................................................................................................... 4-17

4.5.11 LED PCB ................................................................................................................................................................................. 4-184.5.11.1 Removing the LED PCB ............................................................................................................................................................................ 4-18

4.5.12 ADF Driver PCB...................................................................................................................................................................... 4-184.5.12.1 Removing the ADF Driver PCB................................................................................................................................................................. 4-18

Chapter 4

4-1

4.1 Points to Note on Disassembly andReassembly

4.1.1 Points to Note When Turning Off the Main Power of the Host Machine

0024-7008

4.2 External Covers

4.2.1 Front Cover

4.2.1.1 Removing the Front Cove0024-7009

1) Open the feeder cover [1].2) Remove the screw [2].

F-4-13) Open the ADF.4) Detach the front cover [1].

- Screw [2], 2 pcs.

F-4-2

4.2.2 Rear Cover

4.2.2.1 Removing the Rear Cover0024-7010

1) Open the feeder cover.

2) Move to the back of the host machine and detach the rear cover [2].- Screw [1], 2 pcs.

F-4-3

4.2.3 Feeder Cover

4.2.3.1 Removing the Feeder Cover0024-7011

1) Open the feeder cover.2) Open the ADF.3) Detach the front cover.

- Screw, 3 pcs.4) Close the ADF.5) Remove the feeder cover [1].

- Screw [2], 1 pc.- Positioning pin [3], 1 pc.

F-4-4

4.3 Drive System

4.3.1 Pickup Motor

4.3.1.1 Removing the Pickup/Feed Motor0024-7012

1) Open the feeder cover.2) Move to the back of the host machine and detach the rear cover.

- Screw, 2 pcs.

Points to Note When Turning Off the Main Power of the Host MachineBe sure to pull out a power supply plug with the following process before the work when exchanging of the part of this machine.Be sure to turn off the main power in the following order to protect hard disk of the host machine.1) Press the power switch on control panel for 3 sec or more.2) Follow the instruction on the shutdown sequence screen (the main power switch will go off automatically).3) Disconnect the power plug.

[2] [1]

[2]

[1]

Remove the rear cover with the two claws[3] released.

Remove the rear cover with the two claws released.

[1]

[3]

[2]

[1]

[3][2]

Chapter 4

4-2

3) Remove the pickup/feed motor [1] together with the support plate.- Connector [2], 1 pc.- Tension spring [3], 1 pc.- Screw [4], 2 pcs.

F-4-5

4.3.2 Engaging Motor

4.3.2.1 Removing the Release Motor0024-7013


- Screw, 3 pcs.4) Close the ADF.5) Remove the release motor support plate [1].

- Connector [2], 2 pcs.- Harness [3]- Screw [4], 2 pcs.- Harness guide [5]- Screw [6], 3 pcs.

F-4-66) Remove the release motor [1].

- Screw [2], 2 pcs.

F-4-7

4.3.3 Timing Belt/Pulley

4.3.3.1 Removing the Timing Belt0024-7014

1) Remove the ADF from the host machine.- Screw, 2 pcs.

2) Open the feeder cover.3) Detach the front cover.

- Screw, 3 pcs.4) Remove the feeder cover.

- Screw, 1 pc.- Positioning pin, 1 pc.

5) Remove the tray holder.- Screw, 1 pc.

6) Move to the back of the host machine and detach the rear cover.- Screw, 2 pcs.

7) Disconnect the nine connectors [1] from the ADF driver PCB.

F-4-88) Remove the document tray.

- Screw- Harness guide, 2 pcs.- Document tray harness

9) Remove the pickup/feed motor together with the support plate.- Connector, 1 pc.- Tension spring, 1 pc.- Screw, 2 pcs.

10) Remove the left hinge.- Screw, 5 pcs.

11) Remove the harness guide [1].- Connector [2], 5 pcs.- Screw [3], 1 pc.- Harness

F-4-912) Remove the pickup clutch/registration clutch support base.

- Screw, 2 pcs.13) Remove the feed unit.

- Screw, 8 pcs.

[4]

[3]

[2] [4]

[1]

[2][4] [6][2][6]

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

[1]

[2]

[2]


[1]

[1][1]

[2]

[1]

[3][2]

Chapter 4

4-3

14) Remove the metal plate [1].- Screw [2], 3 pcs.

F-4-1015) Remove the two timing belts [1].

F-4-11

4.3.4 Pickup Clutch

4.3.4.1 Removing the Pickup Clutch0024-7015


- Screw, 2 pcs.

3) Remove the clutch support base [1].- Connector [2], 2 pcs.- Screw [3], 2 pcs.

F-4-12

4) Remove the pickup clutch [1].- Harness clamp [2]- Resin ring [3]- Bearing [4]

F-4-13

4.3.5 Registration Clutch

4.3.5.1 Removing the Registration Clutch0024-7016


- Screw, 2 pcs.

3) Remove the clutch support plate [1].- Connector [2], 2 pcs.- Screw [3], 2 pcs.

F-4-14


[1] [2]

[2]

[2]

[1] [1]

[1]

[3]

[2]

Install the pickup clutch with the clutch gear [5] (white) aligned with the mark "W" (white) on the clutch support plate.Install the registration clutch with the gear [6] (black) aligned with the mark "B" (black) on the clutch support plate.


[4]

[3]

[5][1]

[2]

W B

[6]

[1]

[3]

[2]

Chapter 4

4-4

4) Remove the registration clutch [1].- Harness clamp [2]- Resin ring [3]- Bearing [4]

F-4-15

4.4 Document Feeding System

4.4.1 Pickup Roller Unit

4.4.1.1 Removing the Pickup Roller Unit0024-7017


- Screw, 3 pcs.4) Close the ADF.5) Remove the feeder cover.

- Screw, 1 pc.- Positioning pin

6) Remove the inner cover [1] from the feeder cover.- Hook [2], 2 pcs.

F-4-16

7) Remove the pickup roller unit [1].- Resin ring [2], 2 pcs.- Bearing [3], 2 pcs.

F-4-17

4.4.1.2 Precaution about Pickup Roller Unit Installation0024-7018

F-4-18

4.4.2 Pickup Roller/Separation Roller

4.4.2.1 Removing the Pickup Roller/Feed Roller0024-7019


- Screw, 3 pcs.4) Close the ADF.5) Remove the feeder cover.

- Screw, 1 pc.- Positioning pin

6) Remove the inner cover from the feeder cover.- Hook, 2 pcs.

7) Remove the pickup roller unit.- Resin ring, 2 pcs.- Bearing] , 2 pcs.

Install the registration clutch with the clutch gear [5] (black) aligned with the mark "B" on the clutch support plate.Install the pickup clutch with the gear [6] (white) aligned with the mark "W" (white) on the clutch support plate.

[5]

[2]

[4]

[3]

[1][6]

W B

[2] [1] [2]

- Install the pickup roller unit with the stopper arm [1] positioned at the front as shown. - Install the pickup roller unit with the stopper [2] positioned at the rear as shown.

[2] [3] [1] [3] [2]

[1]

[2]

Chapter 4

4-5

8) Remove the pickup roller [1] and feed roller [2].- Screw [3]- Roller holder [4]

F-4-19

4.4.3 Separation Plate/Separation Pad

4.4.3.1 Removing the Separation Pad0024-7020

1) Open the feeder cover.2) Remove the separation pad [1].

- Hook [2], 2 pcs.

F-4-20

4.4.4 Upper Registration Roller

4.4.4.1 Points to Note When Replacing the Upper Registration Roller

0024-7021

F-4-21

4.4.5 Lower Registration Roller

4.4.5.1 Removing the Lower Registration Roller0024-7022







[2]

[3]

[4][1]

[1][2]

Keep the upper registration roller position adjustment top [1] in position when replacing the upper registration roller.The position of the upper registration roller is factory-adjusted. Changing its position could result in troubles, such as skewing during document scanning.Note the reading on the scale [2] observed before replacing the upper registration roller position adjustment top, so the new upper registration roller will be set exactly at the same position as the roller just replaced.


[2]

[1]

Chapter 4

4-6









- Screw, 8 pcs.14) Remove the metal plate [1].

- Screw [2], 3 pcs.

F-4-2415) Remove the two timing belts.

16) Remove the resin ring [1], pulley [2], gear [3], E-ring [4], and bearing[5].

17) Remove the gear [6], gear [7], gear [8], and bearing [9].

F-4-2518) Remove the platen roller unit.19) Detach the cover [1].

- Screw [2], 2 pcs.

F-4-2620) Remove read roller 2.

- Resin ring [1], 1 pc.- Pulley, 1 pc.- Gear, 1 pc.- E-ring, 1 pc.- Bearing, 1 pc.- Gear, 1 pc.- Bearing, 1 pc.

[1]

[1][1]

[2]

[1]

[3][2]

[1] [2]

[2]

[2]

[8]

[1]

[6] [9]

[7]

[2][3][4][5]

[1] [2]

Chapter 4

4-7

21) Remove the sensor mount [1].- Screw [2], 2 pcs.- Hook [3], 2 pcs.

F-4-2722) Remove the lower registration roller [1].

- E-ring [2], 1 pc.- Gear [3], 1 pc.- Bearing [4], 1 pc.- Resin ring [5], 1 pc.- Bearing [6], 1 pc.

F-4-28

4.4.6 Delivery Reversing Roller (upper)

4.4.6.1 Removing the Upper Delivery Reversal Roller0024-7023
















- Screw [2], 3 pcs.



[2]

[3][1]

[6][5]

[4] [2][3]

[1]

[1]

[1][1]

[2]

[1]

[3][2]

[1] [2]

[2]

[2]

Chapter 4

4-8

16) Remove the E-ring [1], pulley [2], gear [3], and bearing [4].

F-4-3217) Remove the upper delivery reversal roller [1].

- Resin ring [2], 1 pc.- Bearing [3], 1 pc.

F-4-33

4.4.7 Read Roller 1

4.4.7.1 Removing the Read Roller 10024-7024









- Screw- Harness guide, 2 pcs.

- Document tray harness9) Remove the pickup/feed motor together with the support plate.

- Connector, 1 pc.- Tension spring, 1 pc.- Screw, 2 pcs.






- Screw [2], 3 pcs.



[1][2][3][4]

[1] [3] [2]

[1]

[1][1]

[2]

[1]

[3][2]

[1] [2]

[2]

[2]

Chapter 4

4-9



F-4-3718) While pushing the hook [1] in the direction of the arrow, remove the plat-

en roller unit [2] in the direction of the arrow.

F-4-38

19) Remove the read roller 1 [1].- Pulley [2], 1 pc.- E-ring [3], 1 pc.- Screw [4], 2 pcs.- Platen roller holder [5], 2 pcs.

F-4-39

4.4.8 Read Roller 2

4.4.8.1 Removing the Read Roller 20024-7025







[8]

[1]

[6] [9]

[7]

[2][3][4][5]

[1]

[1]

[2]


[5]

[4]

[1]

[4]

[3]

[5]

[2]

Chapter 4

4-10










- Screw [2], 3 pcs.




F-4-4318) Remove the platen roller unit. 19) Detach the cover [1].

- Screw [2], 2 pcs.

F-4-44

[1]

[1][1]

[2]

[1]

[3][2]

[1] [2]

[2]

[2]

[8]

[1]

[6] [9]

[7]

[2][3][4][5]

[1] [2]

Chapter 4

4-11

20) Remove the read roller 2 [1].- Resin ring [2], 1 pc.- Pulley [3], 1 pc.- Gear [4], 1 pc.- E-ring [5], 1 pc.- Bearing [6], 1 pc.- Gear [7], 1 pc.- Bearing [8], 1 pc.

F-4-45

4.4.9 Platen Roller

4.4.9.1 Removing the Platen Roller0024-7026








F-4-46

8) Remove the document tray.- Screw- Harness guide, 2 pcs.- Document tray harness



11) Remove the harness guide [1].- Connector [2], 5 pcs.- Screw [3], 1 pcs.- Harness




- Screw [2], 3 pcs.



[7]

[8]

[1]

[2]

[3][4]

[5][6]

[1]

[1][1]

[2]

[1]

[3][2]

[1] [2]

[2]

[2]

Chapter 4

4-12



F-4-4918) While pushing the hook [1] in the direction of the arrow, remove the plat-

en roller unit [2] in the direction of the arrow.

F-4-50

19) Remove the platen roller unit [1].- Pulley [2], 1 pc.- E-ring [3], 1 pc.- Screw [4], 2 pcs.- Platen roller holder [5], 2 pcs.

F-4-51

4.4.10 Feeding Unit

4.4.10.1 Removing the Feed Unit0024-7027







[8]

[1]

[6] [9]

[7]

[2][3][4][5]

[1]

[1]

[2]


[5]

[4]

[1]

[4]

[3]

[5]

[2]

Chapter 4

4-13





10) Remove the left hinge[1].- Screw [2], 5 pcs.

F-4-5311) Remove the harness guide [1].

- Connector [2], 5 pcs.- Screw [3], 1 pcs.- Harness


- Screw, 2 pcs.

13) Remove the feed unit [1].- Screw [2], 8 pcs.

F-4-55

4.4.11 Feed Roller Guide

4.4.11.1 Exchanging the Feed Roller Guide0024-7028

1) Open the ADF.2) Remove the feed roller guide [1].

- Screw [2], 2 pcs.

F-4-563) Pell off the release paper of the new feed roller guide.4) Attach the new feed roller guide.

4.4.12 Document Tray

4.4.12.1 Removing the Document Tray0024-7029


- Screw, 3 pcs.4) Close the ADF.

[1]

[1][1]

[2]

[1]

[2][2]

[2]

[1]

[3][2]

[2][2]

[1]

[2][2]

[1]

[2]

Chapter 4

4-14

5) Remove the tray holder [1].- Screw [2]

F-4-576) Move to the back of the host machine and detach the rear cover.

- Screw, 2 pcs.

7) Remove the document tray [1].- Screw [2]- Harness guide [3], 2 pcs.- Connector (J3)[4]- Document tray harness

F-4-58

4.5 Electrical System

4.5.1 Fan

4.5.1.1 Removing the Fan0024-7030


- Screw, 2 pcs.

3) Remove the fan [1].- Harness clamp [2], 2 pcs.- Connector [3]- Screw [4]

F-4-59

4.5.1.2 Precaution about Fan Installation0024-7031

Install the fan with the arrow oriented as shown.

F-4-60

4.5.2 Inner Sensor of Feed Unit

4.5.2.1 Removing the Sensor in the Feed Unit0024-7032









- Screw- Harness guide, 2 pcs.



[2]

[1]

[2]

[3]

[1]

[4]


[4]

[3]

[2]

[1]

[1]

[1][1]

Chapter 4

4-15

- Document tray harness9) Remove the pickup/feed motor together with the support plate.

- Connector, 1 pc.- Tension spring, 1 pc.- Screw, 2 pcs.






- Screw [2], 3 pcs.




F-4-6418) Remove the platen roller unit. 19) Detach the cover [1].

- Screw [2], 2 pcs.

F-4-6520) Remove the read roller 2.

- Resin ring, 1 pc.- Pulley, 1 pc.- Gear, 1 pc.- E-ring, 1 pc.- Bearing, 1 pc.- Gear, 1 pc.- Bearing, 1 pc.

[2]

[1]

[3][2]

[1] [2]

[2]

[2]

[8]

[1]

[6] [9]

[7]

[2][3][4][5]

[1] [2]

Chapter 4

4-16

21) Remove the sensor mount [1].- Screw [2], 2 pcs.- Hook [3], 2 pcs.

F-4-6622) Remove the sensor [1].

- Connector [2]

F-4-67

4.5.3 Document Width Volume

4.5.3.1 Removing the Relay PCB0024-7033

1) Detach the cover [2] on the reverse side of the document tray.- Screw [1], 3 pcs.

F-4-68

2) Remove the Relay PCB [1].- Fook [2], 2 pcs.- Connector [3], 2 pcs.

F-4-69

4.5.4 Cover Open/Closed Sensor

4.5.4.1 Removing the Cover Open/Closed Sensor0024-7034


- Screw, 2 pcs.

3) Remove the cover open/closed sensor [1].- Connector [2]

F-4-70

4.5.5 Document Set Sensor

4.5.5.1 Removing the Document Set Sensor0024-7035


- Screw, 2 pcs.

[2]

[3][1]

[1]

[2]

[1]

[2]

Install the document width volume with its lower gear groove [4] fitting on the projection [5] on the document tray side. Be sure to install it with the arrow on the gear aligned with the arrow [6] on the tray cover.



[1]

[3]

[2]

[2]

[1]

[2]

Chapter 4

4-17

3) Remove the document set sensor [1].- Connector [2], 1pc.

F-4-71

4.5.6 Document Length sensor

4.5.6.1 Removing the Document Length Sensor0024-7036

1) Detach the cover on the reverse side of the document tray.- Screw, 3 pcs.

2) Remove the document length sensor [1].- Connector [2]

F-4-72

4.5.7 Last Document Detection Sensor

4.5.7.1 Removing the Last Document Detection Sensor0024-7037

1) Detach the cover on the reverse side of the document tray.- Screw, 3 pcs.

2) Remove the last document detection sensor [1].- Connector [2]

F-4-73

4.5.8 Release Motor HP Sensor

4.5.8.1 Removing the Release Motor HP Sensor0024-7039


- Screw, 3 pcs.4) Close the ADF.5) Remove the release motor HP sensor [1].

- Connector [2]

F-4-74

4.5.9 Timing Sensor

4.5.9.1 Removing the Timing Sensor0024-7040


- Screw, 2 pcs.

[1]

[2]

[1]

[2]


[1] [2]

[2]

[1]

Chapter 4

4-18

3) Remove the timing sensor [1].- Connector [2]

F-4-75

4.5.10 Pressurization Solenoid

4.5.10.1 Removing the Pressurization Solenoid0024-7041


- Screw, 2 pcs.

3) Remove the pressurization (roller release) solenoid [1].- Connector [2]- Harness clamp [3], 2 pcs.- Screw [4], 2 pcs.

F-4-76

4.5.11 LED PCB

4.5.11.1 Removing the LED PCB0024-7042


- Screw, 3 pcs.4) Close the ADF.

5) Remove the LED PCB [1].- Screw [2]- Connector [3]

F-4-77

4.5.12 ADF Driver PCB

4.5.12.1 Removing the ADF Driver PCB0024-7043


- Screw, 2 pcs.

3) Remove the ADF driver PCB [1].- Connector [2], 11 pcs.- Screw [3], 2 pcs.

F-4-78


[1]

[2]

[1][2]

[4][3]


[1]

[3]

[2]

[3][2][1][3]

[2][2][2]

Chapter 4

4-19

Chapter 5 Maintenance

Contents

Contents

5.1 User Maintenance .......................................................................................................................................................... 5-15.1.1 Cleaning ....................................................................................................................................................................................... 5-15.1.2 Replacement ................................................................................................................................................................................. 5-1

5.2 Maintenance and Inspection .......................................................................................................................................... 5-25.2.1 Periodically Replaced Parts.......................................................................................................................................................... 5-2

5.2.1.1 Periodically Replaced Parts ...........................................................................................................................................................................5-25.2.2 Durables ....................................................................................................................................................................................... 5-2

5.2.2.1 Durables ..........................................................................................................................................................................................................5-25.2.3 Periodical Servicing ..................................................................................................................................................................... 5-2

5.2.3.1 Periodic Service Items ....................................................................................................................................................................................5-25.3 Adjustment..................................................................................................................................................................... 5-4

5.3.1 Basic Adjustment ......................................................................................................................................................................... 5-45.3.1.1 Outline.............................................................................................................................................................................................................5-45.3.1.2 Adjusting the Height .......................................................................................................................................................................................5-45.3.1.3 Adjusting the Perpendicularity........................................................................................................................................................................5-55.3.1.4 Adjusting the Read Position............................................................................................................................................................................5-65.3.1.5 Adjusting the Horizontal Registration ............................................................................................................................................................5-65.3.1.6 Adjusting the Trailing Edge Registration .......................................................................................................................................................5-65.3.1.7 Adjusting the Magnification ...........................................................................................................................................................................5-65.3.1.8 Adjusting the White Level ..............................................................................................................................................................................5-7

5.4 Outline of Electrical Components ................................................................................................................................. 5-85.4.1 Electric Parts Layout and Functions............................................................................................................................................. 5-8

5.5 Variable Resistors (VR), Light-Emitting Diodes (LED), and Check Pins by PCB ...................................................... 5-95.5.1 Outline.......................................................................................................................................................................................... 5-9

Chapter 5

5-1

5.1 User Maintenance

5.1.1 Cleaning0024-7044

Tell the user to clean the following parts every 2000 sheets.

F-5-1

F-5-2[1] Document glass (large)[2] Document glass holder[3] Vertical size plate[4] Document glass (small)[5] White plate[6] Platen roller[7] White sheet

5.1.2 Replacement0024-7045

1. Replacing the Stamp1) Open the feeder cover and separation guide.2) Using tweezers, remove the stamp.

Parts to clean Cleaning method Cleaning cycle Remarks

White plate (pressure plate)

Clean with a cloth which is dampened with water or neutral detergent and squeezed hard, and then wipe with a dry cloth.

As required

Document glass (large/small)

As required or every 10000 sheets

- Parts of reader unit

Document glass holder As required - Parts of reader unit

Vertical size plate As required - Parts of reader unit

Platen roller As required

White sheet As required

[1]

[2] [3]

[4]

[6] [5]

[7]

Chapter 5

5-2

3) Using tweezers or the like, attach a new stamp.Be sure to attach the new stamp with the stamp face up.

F-5-3

4) Close the feeder cover and separation guide.

5.2 Maintenance and Inspection

5.2.1 Periodically Replaced Parts

5.2.1.1 Periodically Replaced Parts0024-7046

This machine does not have parts that must be replaced periodically.

5.2.2 Durables

5.2.2.1 Durables0024-7047

Some parts must be replaced due to deterioration or damage at least once within the warranty period. The following tale lists the expected average lives (numberof document sheets supplied) of the parts that requires replacement when they become defective.The number of document sheets that have been fed can be checked in the service mode of the host machine.

If the stamp is floating, a jam can occur. Be sure to push in the stamp until it clicks.

As of March, 2008

No. Part name Part No. Quantity Expected life Remarks

1 Pickup roller FM3-6892 1 80000 sheets The number of document sheets that have been fed can be checked in the service mode of the host machine.

2 Separation pad FL2-9942 1 80000 sheets

3 Feed guide (dust collection tape)

FL2-9935 1 40000 sheets

4 Stamp (Option) FC7-5465 1 7000 sheets Replace it when the stamp image becomes faint.

The numbers of sheets listed above are estimated ones, so they may change with the experimental data.

Chapter 5

5-3

5.2.3 Periodical Servicing

5.2.3.1 Periodic Service Items0024-7048

A:Cleaning B:Replacement C:Lubrication D:Adjustment E:Inspection

As for the user maintenance point as well, clean it at the time of the periodic maintenance.

Locations of the parts requiring periodic service are shown below.

F-5-4

Use only the specified solvents and oil.Black streaks can appear due to the paper dust and other foreign particles on the rollers, scrapers, and other part. Clean these parts with care.

Illustration No.

Part name Periodic service Remarks

40000 sheets

80000 sheets

1Pickup roller

A BThe number of document sheets that have been used for the ADF actually can be checked in the service mode of the host machine.

2 Separation pad A B3 Separation roller A B COPIER>COUNTER>FEEDER>FEED4 Upper registration roller A5 Lower registration roller A6 Feed guide (dust collection tape) B7 7 Upper delivery reversal roller A8 8 Lower delivery reversal roller A

Various rollers/driven rollers AVarious scrapers AADF height adjustment DStream reading glass (reader unit) C Apply silicon oil.

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

[7][8][6]

Chapter 5

5-4

5.3 Adjustment

5.3.1 Basic Adjustment

5.3.1.1 Outline0024-7049

This machine has the following adjustment items. Carry out each adjustmentafter replacing the relevant parts.

5.3.1.2 Adjusting the Height0024-7050

1. Pre-checkCheck whether the front and rear document glass spacers provided underthe bottom of the DADF are in close contact with the document glasswhen the DADF is closed. If visual check is difficult, perform the check with reference to the nextand subsequent pages.

F-5-5

2. Checking the left hinge height1) Checking the rear-left height of the DADF

Set paper against the protrusions [1] of the stream reading glass in such amanner that the seat [2] of the stream reading glass is nearly hidden.



F-5-7

No. Adjustment type Parts to replace Remarks[1] Height adjustment Hinge[2] Perpendicularity adjustment Hinge[3] Reading position adjustment Platen roller

[4] Side registration adjustment -During installation only

[5]Trailing edge registration adjustment -

During installation only

[6] Magnification adjustment Motor/roller[7] White level position adjustment Platen roller

CAUTION:Carry out all the above adjustments after removing the ADF from the reader unit.

MEMO:Insert a sheet of paper between the DADF stream reading glass and the document glass spacers (two) and pull out the sheet. It is recommended that slight resistance is felt when pulling out the sheet.

CAUTION:- Use plain paper.


[1] [2] [3]

[1] [2] [3]

Paper

Chapter 5

5-5

3) Checking the front-left height of the DADF Set paper against the protrusions [1] of the stream reading glass in such amanner that the seat [2] of the stream reading glass is nearly hidden.



F-5-93. Adjustment Procedure* When the front or rear side is floating

1) Adjust the left hinge height. 2) Adjust the right hinge height.3) Adjust or check the left hinge height.

* When both sides are floating1) Adjust the left hinge height. 2) Adjust the right hinge height.3) Adjust the left hinge height. 4) Adjust or check the right hinge height.

4. Adjust the height of the left hinge.1) Adjust the height with the left hinge height adjusting screw [1].

* If the front spacer is floating, turn the adjusting screw clockwise to bringthe spacer closer to the glass.

* If only the rear spacer or both front and rear spacers are floating, turn theadjusting screw counterclockwise to bring the rear spacer closer to theglass.

F-5-105. Check the height of the right hinge1) When the DADF is closed, the document hold sheet must be in contact

with the document glass. 6. Adjust the height of the right hinge1) If the height is improper, adjust it with the right hinge adjusting screw [1].

* Turning the adjusting screw clockwise reduces the front-right side heightof the DADF.

* Turning the adjusting screw counter clockwise increases the front-rightside height of the DADF.

F-5-112) Check the height of the left hinge. If the height is inappropriate, adjust it

again.

5.3.1.3 Adjusting the Perpendicularity0024-7052


Paper

[1] [2] [3]

[1] [2] [3]



CAUTION:Keep the upper registration roller position adjustment top in position.The position of the upper registration roller is factory-adjusted. Changing its position could result in troubles, such as skewing during document scanning.

[2]

[1]

[1] [2]

Chapter 5

5-6

1) Load a test chart in the DADF to make a copy.

2) Check the perpendicularity at the leading edges of the test chart and copy.Measure dimensions A and B on the test chart and dimensions A' and B'on the copy. If it is not (A-B) = (A'-B'), go through steps 3) and later.

F-5-123) Loosen the screw [1] securing the right hinge.

F-5-13- A' > B'Slide the hinge [1] of the DADF forward.

F-5-14- B' > A'Slide the hinge of the DADF backward.4) Tighten back the fixing screw you loosened in step 3).

5.3.1.4 Adjusting the Read Position0024-7053

1) Start service mode.[Starting Service Mode]Press the User Mode key, press the 2 and 8 keys at the same time, andpress the User Mode key once again.

2) On the Service Mode screen, touch the following notations in sequence tobring up the Adjustment screen:1 COPIER2 FUNCTION3 INSTALL

3) Press [STRD-POS] to highlight.4) Touch [OK].

A press on [OK] will cause the scanner to start a scan; in several sec-onds, the machine will end auto adjustment of the read position and indi-cate 'OK'.

5.3.1.5 Adjusting the Horizontal Registration0024-7054

1) Place the test chart in the DADF, and make a copy.2) Compare the copy against the Test Chart for the horizontal registration; as

necessary, make the following adjustments:3) On the Service Mode screen, touch the following notations to bring up the

Adjustment screen:1 COPIER2 ADJUST3 ADJ-XY4 ADJ-Y-DF

- if the image is displaced to the front, decrease the setting.- if the image is displaced to the rear, increase the setting.unit of adjustment: 0.1 mm

5.3.1.6 Adjusting the Trailing Edge Registration0024-7055

1) Place the Test Chart in the DADF, and make a copy.2) Compare the copy against the Test Chart for the trailing edge registration;

as necessary, make the following adjustments:3) On the Service Mode screen, touch the following notations to bring up the

Adjustment screen:1 FEEDER2 ADJUST3 DOCST

- if the image is displaced to the leading edge, decrease the setting.- if the image is displaced to the trailing edge, increase the setting.unit of adjustment: 0.1 mm

5.3.1.7 Adjusting the Magnification0024-7056

1) Place the Test Chart in the DADF, and make a copy. Refer to the outputas copy A.

2) Compare Test Chart and copy A in terms of the length of the image in feeddirection; as necessary, make adjustments in service mode.

3) From the Service Mode screen, touch the following notations to bring upthe Adjustment screen:1 FEEDER2 ADJUST3 LA-SPEED to highlight

- if the image of copy A is shorter, decrease the setting (so that the speed atwhich originals are moved in stream reading mode will be reduced).

- if the image of copy A is longer, increase the setting so that the speed atwhich originals are moved in stream reading mode will be increased).

unit of adjustments: 0.1%

MEMOThe test chart is printed on the back cover of the Installation Procedure (this manual). Copy it or clip it out.

B

A

B’

A’A A

B B

Chart feeddirection Test chart copy

[1]

[1]

CAUTION:If the machine fails auto adjustment and indicates 'NG', go through the following:(1) Clean the white roller of the DADF and the stream reading glass of the host machine; then, execute auto adjustment once again.(2)If the auto adjustment operation still fails, start service mode, and make adjustments manually:COPIER>ADJUST>ADJ-XY>STRD-POS

CAUTION:After completion of this adjustment, check the perpendicularity. If the perpendicularity is not within spec, adjust it again following the procedures mentioned in "Adjusting the Perpendicularity" and later.

Chapter 5

5-7

5.3.1.8 Adjusting the White Level0024-7057

1) Touch the following notations in sequence to bring up the Adjustmentscreen:1 COPIER2 FUNCTION3 CCD

2) Place paper (of the type most often used by the user) on the copyboardglass, and close the DADF.

3) Press [DF-WLVL1] to highlight.4) Press [OK].

Automatic adjustment starts; if it ends successfully, the screen shows[OK!].

5) Remove the paper from the copyboard glass, and place it on the originaltray of the DADF.

6) Press [DF-WLVL2] on the touch panel to highlight.7) Press [OK].

- The machine executes auto adjustment (duplex stream reading).- When the adjustment ends normally, the machine indicates 'OK!' on thescreen.

8) If the monochromic adjustment fails, perform steps 2) to 7) again.9) Place paper (of the type most often used by the user) on the copyboard

glass, and close the DADF.10) Press [DF-WLVL3] to highlight.11) Press [OK].

Automatic adjustment starts; if it ends successfully, the screen shows[OK!].

12) Remove the paper from the copyboard glass, and place it on the originaltray of the DADF.

13) Press [DF-WLVL4] on the touch panel to highlight.14) Press [OK].- The machine executes auto adjustment (duplex stream reading).- When the adjustment ends normally, the machine indicates 'OK!' on the

screen.15) If the color adjustment fails, perform steps 9) to 14) again. 16) Press the Reset key twice to end service mode.

MEMOThis is a item of adjustment in which the white level of images made in stream reading mode are matched with the white level of images made in copyboard cover mode. If you omit this adjustment, the following will likely occur:- inappropriate reproduction of background density in images made in stream reading mode- wrong speck detection in stream reading mode

MEMOThis system incorporates a 4-line CCD sensor which is used for two types of white level adjustments: a monochromic adjustment and a color adjustment. "DF-WLVL1" and "DF-WLVL2" are for the monochromic adjustment, and "DF-WLVL3" and "DF-WLVL4" are for the color adjustment.

Chapter 5

5-8

5.4 Outline of Electrical Components

5.4.1 Electric Parts Layout and Functions0024-7059

<Sensors>

F-5-15

Symbol Name Part No. Relay PCB ADF driver PCB Jam code

SR1 Registration sensor WG8-5696 J10003, 0004, 0044, 0094

SR2 Read sensor WG8-5696 J10005, 0006, 0045, 0046, 0094

SR3 Delivery reversal sensor WG8-5696 J10007, 0008, 0047, 0048, 0094

SR4 Timing sensor WG8-5696 J2

SR5 Document set sensor WG8-5696 J20095

SR6 Cover open/closed sensor WG8-5696 J20092, 0093

SR9 Document length sensor 1 WG8-5696 J51 J3

SR8 Document length sensor 2 WG8-5696 J51 J3

SR7 Last document detection sensor WG8-5696 J51 J3

SR11Release motor HP sensor WG8-5696

J50073

PS1(PCB2) Document width sensor 2

FM4-3024J3

PS2(PCB2) Document width sensor 1

FM4-3024J3

SR7

SR9

SR8

PS1(PCB2)

PS2(PCB2)

SR1 SR11

SR2

SR3

SR4

SR5

SR6

Chapter 5

5-9

<Motors, clutches, solenoids, PCBs, etc.>

F-5-16

5.5 Variable Resistors (VR), Light-Emitting Diodes (LED), and Check Pins by PCB

5.5.1 Outline0024-7060

The PCBs mounted in this machine have neither LED nor check pin for the adjustments carried out at the customer site or factory.

Symbol Name Function Part No. ADF driver PCB E code

M1 Motor Pickup/feed motor FK2-6869 J4M2 Release motor FK2-0207 J12 E413SL1 Solenoid Stamp solenoid FK2-6871 J6SL2 Pressurization solenoid FK2-0216 J5CL1 Clutch Pickup clutch FK2-6870 J7CL2 Registration clutch FK2-6870 J7FM1 Fan Exhaust fan FK2-6872 J8PCB1 ADF driver PCB ADF control FM4-3023 E400, E490

PCB3 LED PCB Indicates whether a document is placed using an LED.

FM3-6916 J5

M1

M2

CL1

CL2

SL1

FM1

SL2PCB1

PCB3

Chapter 6 Error Code

Contents

Contents

6.1 Service Error Code ........................................................................................................................................................ 6-16.1.1 Error Code List............................................................................................................................................................................. 6-1

6.2 Jam Codes...................................................................................................................................................................... 6-16.2.1 Jam Code List............................................................................................................................................................................... 6-1

Chapter 6

6-1

6.1 Service Error Code

6.1.1 Error Code List0024-7072

6.2 Jam Codes

6.2.1 Jam Code List0024-7073

Code Detail code

Error state Description

E413 Release motor error (The level of the roller motor HP sensor has not changed within the specified time even after the Shift motor was driven.)Cause: The release motor HP sensor, release motor, or ADF driver PCB is defective or the release cam load has increased.

0001 The release roller has been opened during release t motor initialization.

The release motor HP sensor had not turned on within the specified time since start of driving of the release motor, and the operation was retried but turning on of the release motor HP sensor has not been detected.

0002 The release roller has been closed during release motor initialization.

The release motor HP sensor had not turned on within the specified time since start of driving of the release motor, and the operation was retried but turning on of the release motor HP sensor has not been detected.

Code Name Sensor No. Description

0003 Registration sensor delay SR1 1) The registration sensor has not detected paper within 1.5 seconds since start of separation. 2) The registration sensor has not detected paper when the paper has been fed by the predetermined distance for reversal.

0004 Registration sensor stationary SR1 The trailing edge of paper has not been detected when the paper has been fed by the predetermined distance since it was detected by the registration sensor.

0005 Read sensor delay SR1,SR2 The read sensor has not detected paper when the paper has been fed by the predetermined distance since reception of a pickup request.

0006 Read sensor stationary SR2 The trailing edge of paper has not been detected when the paper has been fed by the predetermined distance since detection of it by the read sensor.

0007 Delivery reversal sensor delay SR2,SR3 The delivery reversal sensor has not detected paper when the paper has been fed by the predetermined distance since reception of a read request.

0008 Delivery sensor stationary SR3 The trailing edge of paper has not been detected when the paper has been fed by the predetermined distance since the delivery reversal sensor detected the paper.

0044 Fist document registration sensor stationary

SR1 A read sensor delay jam has occurred during feed of the first document.

0045 First document read sensor non-arrival

SR1,SR2 A read sensor delay jam has occurred during feed of the first document.

0046 First read sensor stationary SR2 A read sensor stationary jam has occurred during feed of the first document.

0047 First document delivery reversal sensor non-arrival

SR2,SR3 A delivery reversal sensor delay jam has occurred during feed of the first document.

0048 First document delivery reversal sensor stationary

SR2 A delivery reversal sensor stationary jam has occurred during feed of the first document.

0071 Timing error - The software sequence has not ended normally within the specified time.

0073 Release NG SR11 The Release motor HP sensor has not turned on within the specified time (1 second).

0090 ADF open Sensor in reader unit

The ADF has been opened during operation (of the drive system).

0091 User ADF open Sensor in reader unit

The ADF has been opened during operation (of the drive system).

0092 ADF cover open SR6 The ADF cover has been opened during operation (of the drive system).

0093 User cover open SR6 The user cover has been opened during operation (of the drive system).

0094 Initial stationary SR1,SR2,SR3 Paper has been detected in the path during feed of the first document.

Chapter 6

6-2

0095 Pickup NG - A pickup signal has been received for 2 seconds with no document placed on the tray.

Code Name Sensor No. Description

Appendix

1

1 General Timing ChartTiming Chart (A4 size, single-sided original (1 sheet ) copying)

F-1-1


Puressurization solenoid(SL2)

Stamp solenoid (SL1)

Release motor(M2)

Release motor HP sensor(SR11)



Pickup clutch(CL1)

Timing sensor(SR4)



Read sensor(SR2)


Documentdelivery

Document readingDocumentseparation/feed

Loop formation Read position


3

2 General Circuit DiagramGeneral Circuit DiagramDADF-AA1 General Circuit Diagram

F-2-1

10982 3 4 5 61 7

J503

J9

J511

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

J504

1234J88

J7

J11

J84

J85

J6J4J8

1 2 3 4 5

J12J2

10982 3 4 5 61 7

J1

J3

J50

12345678910111213141516171819202122232425

J10

M1

FM1

J114

J5

9 8 23456 17

J51

SL2

J112

SR11

1 2 3 4

M2

12

J80

J111

1 2 3 4J89

1 2J81

J101 J105

123

3 2 1

1 2J83

2

1

CL1

2

1

SL12

1

CL2

12

J82

SR9 SR8 SR7

J102 J103 J104

J109 J108 J107

123

3 2 1

123

3 2 1

SR1 SR2 SR3 SR4 SR5

123

3 2 1

123

3 2 1

982 3 4 5 61 7

J106

SR6

123

3 2 1

1 2 3 1 2 3 4

1 2 3 2 3 4 5 61

2 3 4 5 61

2 3 4 5 61

123

3 2 1

123

3 2 1

123

3 2 1

2 3 4 5 61 7

8 23456 17 11 10 9 8 23456 17

1 2

12

12

12

2 31

21

2 31

2 31

8 23456 17

21

PS2

PS1

TimingSensorRead Sensor

Document SetSensor

Release Motor

Release MotorHP Sensor

StampSolenoid

LED PCB

DocumentLength

Sensor 1

DocumentLength

Sensor 2

Last DocumentDetectionSensor

Document Width Sensor 1

ADF Driver PCB

Relay PCB

Document Width Sensor 2

DeliveryReversalSensor

RegistrationSensor

Cover Open/ClosedSensor

PickupClutch

Fan

RegistrationClutch

Pickup/FeedMotor Pressurization

Solenoid

To Reader Unit To Reader Unit

Mar 10 2010