Canon DADF-P1 User manual

Sep 14 2005
Service Manual
Feeder
DADF-P1

Application
This 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.
Corrections
This 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.
Trademarks
The product names and company names used in this manual are the registered trademarks of the individual companies.
Copyright
This 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.
COPYRIGHT © 2001 CANON INC.
Printed in Japan
Caution
Use of this manual should be strictly supervised to avoid disclosure of confidential information.

Introduction
Symbols Used
This 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
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 the
direction 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 in
supplying 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, how-
ever, 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 microprocessors
used 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 the
DC 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 be
able to identify and isolate faults in the machine."

Contents
Contents
Chapter 1 Specifications
1.1 Product Specifications ................................................................................................................................... 1- 1
1.1.1 Specifications ........................................................................................................................................... 1- 1
1.2 Names of Parts ............................................................................................................................................... 1- 2
1.2.1 External View............................................................................................................................................ 1- 2
1.2.2 Cross-section............................................................................................................................................ 1- 2
Chapter 2 Functions
2.1 Basic Construction.......................................................................................................................................... 2- 1
2.1.1 Outline of Electric Circuit ........................................................................................................................ 2- 1
2.2 Basic Operation............................................................................................................................................... 2- 1
2.2.1 Drive Mechanism and Signals ............................................................................................................... 2- 1
2.2.2 Outline of Operation Mode ..................................................................................................................... 2- 2
2.2.3 Forward Pickup/Delivery (Single-sided document > Simplex Printing) Operation ........................ 2- 2
2.2.4 Forward Pickup/Reversal Delivery (Double-sided document > Duplex printing) Operation........ 2- 2
2.3 Document Detection....................................................................................................................................... 2- 4
2.3.1 Outline ....................................................................................................................................................... 2- 4
2.3.2 Document Presence/Absence Detection ............................................................................................. 2- 4
2.3.3 Detection of Last Document................................................................................................................... 2- 4
2.3.4 Initial Document Size Detection ............................................................................................................ 2- 5
2.4 Document Pickup/Separation ....................................................................................................................... 2- 6
2.4.1 Basic Pickup Operation .......................................................................................................................... 2- 6
2.4.2 Pickup Unit and Stopper......................................................................................................................... 2- 7
2.4.3 Pickup Timing........................................................................................................................................... 2- 7
2.4.4 Pickup Motor (M2) Control ..................................................................................................................... 2- 7
2.5 Document Reversing...................................................................................................................................... 2- 8
2.5.1 Basic Operation........................................................................................................................................ 2- 8
2.5.2 Operation Sequence ............................................................................................................................... 2- 9
2.6 Document Feeding/Delivery.......................................................................................................................... 2- 9
2.6.1 Basic Operation........................................................................................................................................ 2- 9
2.6.2 Operation Sequence ............................................................................................................................. 2- 10
2.6.3 Feed Motor (M1) Control ...................................................................................................................... 2- 10
2.7 Detecting Jams ............................................................................................................................................. 2- 10
2.7.1 Jam .......................................................................................................................................................... 2- 10
2.8 Power Supply ................................................................................................................................................ 2- 11
2.8.1 Power Supply ......................................................................................................................................... 2- 11
2.9 Stamp Operation........................................................................................................................................... 2- 11
2.9.1 Outline ..................................................................................................................................................... 2- 11
Chapter 3 Parts Replacement Procedure
3.1 Removing from the Host Machine................................................................................................................ 3- 1

Contents
3.1.1 Feeder ........................................................................................................................................................3- 1
3.1.1.1 Removing from the Host Machine ..................................................................................................3- 1
3.2 External Covers...............................................................................................................................................3- 1
3.2.1 Front Cover................................................................................................................................................3- 1
3.2.1.1 Removing the Front Cover ..............................................................................................................3- 1
3.2.2 Rear Cover ................................................................................................................................................3- 1
3.2.2.1 Removing the Rear Cover ...............................................................................................................3- 1
3.2.3 Feeder Cover ............................................................................................................................................3- 1
3.2.3.1 Removing the Front Cover ..............................................................................................................3- 1
3.2.3.2 Removing the Feeder Cover ...........................................................................................................3- 2
3.3 Drive System....................................................................................................................................................3- 2
3.3.1 Pickup Motor..............................................................................................................................................3- 2
3.3.1.1 Removing the Rear Cover ...............................................................................................................3- 2
3.3.1.2 Removing the Pickup Motor ............................................................................................................3- 2
3.3.1.3 Installing the Pickup Motor ..............................................................................................................3- 2
3.3.2 Feed Motor ................................................................................................................................................3- 3
3.3.2.1 Removing the Rear Cover ...............................................................................................................3- 3
3.3.2.2 Removing the Feed Motor ...............................................................................................................3- 3
3.3.2.3 Installing the Feed Motor .................................................................................................................3- 3
3.3.3 Timing Belt/Pulley.....................................................................................................................................3- 3
3.3.3.1 Removing the Front Cover ..............................................................................................................3- 3
3.3.3.2 Removing the Feeder Cover ...........................................................................................................3- 3
3.3.3.3 Removing the Rear Cover ...............................................................................................................3- 4
3.3.3.4 Removing the ADF Driver PCB ......................................................................................................3- 4
3.3.3.5 Removing the Pickup Motor ............................................................................................................3- 4
3.3.3.6 Removing the Feed Motor ...............................................................................................................3- 4
3.3.3.7 Removing the Timing Belt................................................................................................................3- 4
3.4 Document Feeding System ...........................................................................................................................3- 5
3.4.1 Pickup Roller Unit .....................................................................................................................................3- 5
3.4.1.1 Removing the Front Cover ..............................................................................................................3- 5
3.4.1.2 Removing the Feeder Cover ...........................................................................................................3- 5
3.4.1.3 Removing the Pickup Roller Unit....................................................................................................3- 5
3.4.1.4 Precaution about Pickup Roller Unit Installation .........................................................................3- 6
3.4.2 Pickup Roller/Separation Roller .............................................................................................................3- 6
3.4.2.1 Removing the Front Cover ..............................................................................................................3- 6
3.4.2.2 Removing the Feeder Cover ...........................................................................................................3- 6
3.4.2.3 Removing the Pickup Roller Unit....................................................................................................3- 6
3.4.2.4 Removing the Pickup Roller and Separation Roller ....................................................................3- 6
3.4.3 Separation Plate/Separation Pad...........................................................................................................3- 7
3.4.3.1 Removing the Separation Pad ........................................................................................................3- 7
3.4.4 Upper Registration Roller ........................................................................................................................3- 7
3.4.4.1 Removing the Front Cover ..............................................................................................................3- 7
3.4.4.2 Removing the Feeder Cover ...........................................................................................................3- 7
3.4.4.3 Removing the Upper Registration Roller.......................................................................................3- 7
3.4.5 Lower Registration Roller ........................................................................................................................3- 8
3.4.5.1 Removing the Front Cover ..............................................................................................................3- 8
3.4.5.2 Removing the Feeder Cover ...........................................................................................................3- 8
3.4.5.3 Removing the Rear Cover ...............................................................................................................3- 8
3.4.5.4 Removing the ADF Driver PCB ......................................................................................................3- 8

Contents
3.4.5.5 Removing the Feed Motor............................................................................................................... 3- 8
3.4.5.6 Removing the Timing Belt ............................................................................................................... 3- 9
3.4.5.7 Removing the Document Tray........................................................................................................ 3- 9
3.4.5.8 Removing the Feeding Unit............................................................................................................. 3- 9
3.4.5.9 Removing the Platen Roller Unit .................................................................................................... 3- 9
3.4.5.10 Removing the Read Roller 2....................................................................................................... 3- 10
3.4.5.11 Removing the Sensor Unit in the Feeder Unit ......................................................................... 3- 10
3.4.5.12 Removing the Lower Registration Roller .................................................................................. 3- 10
3.4.6 Delivery Reversing Roller (upper) ....................................................................................................... 3- 11
3.4.6.1 Removing the Front Cover ............................................................................................................ 3- 11
3.4.6.2 Removing the Feeder Cover......................................................................................................... 3- 11
3.4.6.3 Removing the Rear Cover............................................................................................................. 3- 11
3.4.6.4 Removing the ADF Driver PCB .................................................................................................... 3- 11
3.4.6.5 Removing the Pickup Motor .......................................................................................................... 3- 11
3.4.6.6 Removing the Feed Motor............................................................................................................. 3- 12
3.4.6.7 Removing the Timing Belt ............................................................................................................. 3- 12
3.4.6.8 Removing the Document Tray...................................................................................................... 3- 12
3.4.6.9 Removing the Feeding Unit........................................................................................................... 3- 13
3.4.6.10 Removing the Upper Delivery Reversing Roller ...................................................................... 3- 13
3.4.7 Read Roller 1 .......................................................................................................................................... 3- 13
3.4.7.1 Removing the Front Cover ............................................................................................................ 3- 13
3.4.7.2 Removing the Feeder Cover......................................................................................................... 3- 13
3.4.7.3 Removing the Rear Cover............................................................................................................. 3- 14
3.4.7.4 Removing the ADF Driver PCB .................................................................................................... 3- 14
3.4.7.5 Removing the Pickup Motor .......................................................................................................... 3- 14
3.4.7.6 Removing the Feed Motor............................................................................................................. 3- 14
3.4.7.7 Removing the Timing Belt ............................................................................................................. 3- 14
3.4.7.8 Removing the Document Tray...................................................................................................... 3- 15
3.4.7.9 Removing the Feeding Unit........................................................................................................... 3- 15
3.4.7.10 Removing the Read Roller 1....................................................................................................... 3- 15
3.4.8 Read Roller 2 .......................................................................................................................................... 3- 16
3.4.8.1 Removing the Front Cover ............................................................................................................ 3- 16
3.4.8.2 Removing the Feeder Cover......................................................................................................... 3- 16
3.4.8.3 Removing the Rear Cover............................................................................................................. 3- 16
3.4.8.4 Removing the ADF Driver PCB .................................................................................................... 3- 16
3.4.8.5 Removing the Pickup Motor .......................................................................................................... 3- 16
3.4.8.6 Removing the Feed Motor............................................................................................................. 3- 17
3.4.8.7 Removing the Timing Belt ............................................................................................................. 3- 17
3.4.8.8 Removing the Document Tray...................................................................................................... 3- 17
3.4.8.9 Removing the Feeding Unit........................................................................................................... 3- 18
3.4.8.10 Removing the Read Roller 2....................................................................................................... 3- 18
3.4.9 Platen Roller............................................................................................................................................ 3- 18
3.4.9.1 Removing the Front Cover ............................................................................................................ 3- 18
3.4.9.2 Removing the Feeder Cover......................................................................................................... 3- 19
3.4.9.3 Removing the Rear Cover............................................................................................................. 3- 19
3.4.9.4 Removing the ADF Driver PCB .................................................................................................... 3- 19
3.4.9.5 Removing the Pickup Motor .......................................................................................................... 3- 19
3.4.9.6 Removing the Feed Motor............................................................................................................. 3- 19
3.4.9.7 Removing the Timing Belt ............................................................................................................. 3- 19

Contents
3.4.9.8 Removing the Document Tray ......................................................................................................3- 20
3.4.9.9 Removing the Feeding Unit...........................................................................................................3- 20
3.4.9.10 Removing the Platen Roller.........................................................................................................3- 20
3.4.10 Delivery Reversing Roller (lower) ......................................................................................................3- 21
3.4.10.1 Removing the Front Cover ..........................................................................................................3- 21
3.4.10.2 Removing the Feeder Cover .......................................................................................................3- 21
3.4.10.3 Removing the Rear Cover ...........................................................................................................3- 21
3.4.10.4 Removing the ADF Driver PCB ..................................................................................................3- 21
3.4.10.5 Removing the Pickup Motor ........................................................................................................3- 22
3.4.10.6 Removing the Feed Motor ...........................................................................................................3- 22
3.4.10.7 Removing the Timing Belt............................................................................................................3- 22
3.4.10.8 Removing the Document Tray ....................................................................................................3- 23
3.4.10.9 Removing the Feeding Unit.........................................................................................................3- 23
3.4.10.10 Removing the Lower Delivery Reversing Roller ....................................................................3- 23
3.4.11 Feeding Unit ..........................................................................................................................................3- 23
3.4.11.1 Removing the Front Cover ..........................................................................................................3- 23
3.4.11.2 Removing the Feeder Cover .......................................................................................................3- 23
3.4.11.3 Removing the Rear Cover ...........................................................................................................3- 23
3.4.11.4 Removing the ADF Driver PCB ..................................................................................................3- 24
3.4.11.5 Removing the Pickup Motor ........................................................................................................3- 24
3.4.11.6 Removing the Feed Motor ...........................................................................................................3- 24
3.4.11.7 Removing the Timing Belt............................................................................................................3- 24
3.4.11.8 Removing the Document Tray ....................................................................................................3- 25
3.4.11.9 Removing the Feeding Unit ........................................................................................................3- 25
3.4.12 Document Tray......................................................................................................................................3- 25
3.4.12.1 Removing the Front Cover ..........................................................................................................3- 25
3.4.12.2 Removing the Rear Cover ...........................................................................................................3- 26
3.4.12.3 Removing the Document Tray ....................................................................................................3- 26
3.5 Electrical System...........................................................................................................................................3- 26
3.5.1 Inner Sensor of Feed Unit .....................................................................................................................3- 26
3.5.1.1 Removing the Front Cover ............................................................................................................3- 26
3.5.1.2 Removing the Feeder Cover .........................................................................................................3- 26
3.5.1.3 Removing the Rear Cover .............................................................................................................3- 27
3.5.1.4 Removing the ADF Driver PCB ....................................................................................................3- 27
3.5.1.5 Removing the Pickup Motor ..........................................................................................................3- 27
3.5.1.6 Removing the Feed Motor .............................................................................................................3- 27
3.5.1.7 Removing the Timing Belt..............................................................................................................3- 27
3.5.1.8 Removing the Document Tray ......................................................................................................3- 28
3.5.1.9 Removing the Feeding Unit...........................................................................................................3- 28
3.5.1.10 Removing the Platen Roller Unit ................................................................................................3- 28
3.5.1.11 Removing the Read Roller 2 .......................................................................................................3- 29
3.5.1.12 Removing the Sensor in the Feeder Unit..................................................................................3- 29
3.5.2 Document Width Volume.......................................................................................................................3- 29
3.5.2.1 Removing the Relay PCB (Document Width Sensor PCB)......................................................3- 29
3.5.3 Cover Open/Closed Sensor ..................................................................................................................3- 30
3.5.3.1 Removing the Rear Cover .............................................................................................................3- 30
3.5.3.2 Removing the Feeder Cover Open/Close Sensor .....................................................................3- 30
3.5.4 Document Set Sensor............................................................................................................................3- 30
3.5.4.1 Removing the Rear Cover .............................................................................................................3- 30

Contents
3.5.4.2 Removing the Document Placement Sensor ............................................................................ 3- 30
3.5.5 Document Length sensor...................................................................................................................... 3- 30
3.5.5.1 Removing the Document Length Sensor.................................................................................... 3- 30
3.5.6 Pressurization Solenoid......................................................................................................................... 3- 31
3.5.6.1 Removing the Rear Cover............................................................................................................. 3- 31
3.5.6.2 Removing the Pressurization Solenoid (Roller Release Solenoid)......................................... 3- 31
3.5.7 ADF Driver PCB ..................................................................................................................................... 3- 31
3.5.7.1 Removing the Rear Cover............................................................................................................. 3- 31
3.5.7.2 Removing the ADF Driver PCB .................................................................................................... 3- 31
Chapter 4 Maintenance
4.1 User Maintenance........................................................................................................................................... 4- 1
4.1.1 Cleaning .................................................................................................................................................... 4- 1
4.1.2 Replacement ............................................................................................................................................ 4- 1
4.2 Maintenance and Inspection......................................................................................................................... 4- 2
4.2.1 Periodically Replaced Parts.................................................................................................................... 4- 2
4.2.1.1 Periodically Replaced Parts ............................................................................................................ 4- 2
4.2.2 Durables..................................................................................................................................................... 4- 2
4.2.2.1 Durables ............................................................................................................................................. 4- 2
4.2.3 Periodical Servicing ................................................................................................................................. 4- 2
4.2.3.1 Periodic Service Items ..................................................................................................................... 4- 2
4.3 Adjustment ....................................................................................................................................................... 4- 2
4.3.1 Basic Adjustment...................................................................................................................................... 4- 2
4.3.1.1 Outline ................................................................................................................................................ 4- 2
4.3.1.2 Height Adjustment ............................................................................................................................ 4- 2
4.3.1.3 Perpendicularity Adjustment ........................................................................................................... 4- 3
4.3.1.4 Magnification Adjustment ................................................................................................................ 4- 4
4.3.1.5 Side Registration Adjustment ......................................................................................................... 4- 4
4.3.1.6 Leading Edge Registration Adjustment......................................................................................... 4- 4
4.3.1.7 Reading Position Adjustment.......................................................................................................... 4- 4
4.4 Outline of Electrical Components................................................................................................................. 4- 5
4.4.1 Electric Parts Layout/Functions............................................................................................................. 4- 5
4.5 Variable Resistors (VR), Light-Emitting Diodes (LED), and Check Pins by PCB................................. 4- 6
4.5.1 Outline ....................................................................................................................................................... 4- 6
4.5.2 ADF Driver PCB....................................................................................................................................... 4- 6
4.5.3 Relay PCB ............................................................................................................................................... 4- 6
Chapter 5 Error Code
5.1 Service Error Code ......................................................................................................................................... 5- 1
5.1.1 Error Code List ......................................................................................................................................... 5- 1
5.2 Jam Codes....................................................................................................................................................... 5- 1
5.2.1 Jam Code List .......................................................................................................................................... 5- 1

Chapter 1 Specifications

Contents
Contents
1.1 Product Specifications........................................................................................................................................ 1-1
1.1.1 Specifications .............................................................................................................................................. 1-1
1.2 Names of Parts.................................................................................................................................................... 1-2
1.2.1 External View.............................................................................................................................................. 1-2
1.2.2 Cross-section ............................................................................................................................................... 1-2

Chapter 1
1-1
1.1 Product Specifications
1.1.1 Specifications
0010-3980
T-1-1
Item Specification Remarks
Document pickup method Automatic pickup and delivery
Document loading direction Face-up
Document loading position Aligned to center
Document separation method Upper separation
Document weight
Continuous feed: 52-105 g/m2 or less Document longer than
432 mm: 60-90 g/m2
(single-sided, single
feed)
Single feed: Less than 37-52 g/m2, 105-128 g/m2 or less
Document size
AB type: B6/A5/A5R/B5R/A4/A4R/B4/A3 SMT, B6: Landscape
orientation only
Inch type: STMT/LTR/LTRR/LGN/11 x 17
Document width: 148-297 mm
Document length (longitudinal)
128-432 <<1000>> mm
The document with the
length indicated in <<
>> must be held by the
operator.
Document tray capacity
S-size: 50 sheets (S-size: A4, A4R, B5, B5R, A5, A5R, B6,
LTR, LTRR, STMT)
(80 g/m2 paper)
L-size: 25 sheets (L-size: A3, 11 x 17, B4, LGL)
Document heavier than 80 g/m2: Weight equivalent
Folded document: 10 mm or less in height
Document read method Stream reading
Document processing mode - Single-sided document processing
- Double-sided document processing
Document size recognition Detected by photo interrupter on pickup tray Longitudinal: Two
photo interrupters
Lateral: Two photo
interrupters
Jam recovery function Not supported
Completion stamp function Supported
Mixed document function
Same types of paper can be mixed. Mixing of same type of
paper: 52-105 g/m2 or
less (equivalent to that
in continuous feed
mode)
Mixing of different
types of paper: 64-81.4
g/m2
Different types of paper can be mixed.
Examples of mixing of different types of paper
AB type: A3/B4, A4/B5, B4/A4R, B5/A5
Book document Ready (The thickness of the book document must not
exceed 50 mm.)
Document feed speed 100% read: 118 mm/s Speed range: 26.22 to
236 mm/s
Document processing speed
(A4, LTR)
Single-sided: 20 ipm Document processing
speed can be varied.
Power supply Power system: 24 VDC ±5%
Logic system: 13 VDC ±3%
Supplied from host
machine
Weight Approx. 7.0 kg
Dimensions 565 (W) x 489.4 (D) x 122 (H) mm
Operating
environment
Temperature
range
Same as that of host machine.
Humidity range Same as that of host machine.

Chapter 1
1-2
1.2 Names of Parts
1.2.1 External View
0010-3981
F-1-1
T-1-2
1.2.2 Cross-section
0010-3982
F-1-2
[1] Lower registration roller
[2] Upper registration roller
[3] Separation roller
[4] Separation pad
[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] Read roller
[13] Read roller 1 (upper)
[14] Read roller 1 (lower)
[15] White sheet
[1] Feeder cover [4] Document pickup tray
[2] Rear cover [5] Front cover
[3] Slide guide [6] Document delivery tray
[1]
[2]
[3] [4]
[6]
[5]
[1] [2] [3] [4] [5]
[6]
[9] [7] [10][11][13][14] [8]
[12]
[15]

Chapter 2 Functions