Canon iRC2570, iRC3170, iRC3100 dadf-l1 Service Manual
Service Manual
Feeder
DADF-L1
Nov 13 2003
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.
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.
Introduction
Memo
REF.
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.
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 reference 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, 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 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 communicated 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
1.1.1Specifications .............................................................................................................................................. 1- 1
1.2 Names of Parts................................................................................................................................................... 1- 3
1.2.1External View.............................................................................................................................................. 1- 3
1.2.2Cross Section...............................................................................................................................................1- 3
1.3 Using the Machine............................................................................................................................................. 1- 5
1.3.1Original Placement Indicator....................................................................................................................... 1- 5
1.3.2Warning and Action .................................................................................................................................... 1- 5
Chapter 2 Functions
2.1 Basic Construction ............................................................................................................................................ 2- 1
2.1.1Overview of the Electrical Circuitry ........................................................................................................... 2- 1
2.1.2Inputs to the ADF Controller PCB.............................................................................................................. 2- 1
2.1.3Outputs from the ADF Controller PCB....................................................................................................... 2- 2
2.2 Basic Operation ................................................................................................................................................. 2- 4
2.2.1Route of Drive ............................................................................................................................................. 2- 4
2.2.2Overview of Operation Mode...................................................................................................................... 2- 4
2.2.3Clockwise Pickup/Delivery (single-sided original -> single-sided print) ................................................... 2- 5
2.2.4Clockwise Pickup/Reversal Deliver (double-sided original -> double-sided print) ................................... 2- 6
2.2.5Idle Circulation/Pickup/Delivery (size-mix double-sided original -> double-side print) ........................... 2- 8
2.2.6Idle Circulation/Reversal Pickup/Delivery (size-mix single-sided original -> single-sided print) ........... 2- 11
2.3 Document Detection........................................................................................................................................ 2- 14
2.3.1Overview ................................................................................................................................................... 2- 14
2.3.2Checking the Presence/Absence of an Original ........................................................................................ 2- 15
2.3.3Detecting the Last Original ....................................................................................................................... 2- 15
2.3.4Initial Original Size Detection (feed direction) ......................................................................................... 2- 16
2.3.5Initial Original Size Detection (cross feed direction)................................................................................ 2- 16
2.3.6Slide Guide Positioning Roll..................................................................................................................... 2- 18
2.3.7Last Original Size Detection ..................................................................................................................... 2- 19
2.4 Document Pickup/Separation .......................................................................................................................... 2- 22
2.4.1Basic Sequence of Operation .................................................................................................................... 2- 22
2.4.2Pickup Unit and the Stopper...................................................................................................................... 2- 23
2.4.3Timing of Pickup....................................................................................................................................... 2- 24
2.4.4Controlling the Pickup Motor (M2) .......................................................................................................... 2- 24
2.5 Document Reversing ....................................................................................................................................... 2- 26
2.5.1Basic Sequence of Operation .................................................................................................................... 2- 26
2.5.2Sequence of Operation .............................................................................................................................. 2- 27
2.6 Document Feeding/Delivery ........................................................................................................................... 2- 28
2.6.1Basic Sequence of Operation .................................................................................................................... 2- 28
2.6.2Sequence of Operation .............................................................................................................................. 2- 29
2.6.3Controlling the Feed Motor (M1).............................................................................................................. 2- 29
Contents
2.7 Detecting Jams.................................................................................................................................................2- 31
2.7.1Jams ...........................................................................................................................................................2- 31
2.8 Power Supply...................................................................................................................................................2- 32
2.8.1Power Supply.............................................................................................................................................2- 32
Chapter 3 Installation
3.1 Unpacking and Installation ................................................................................................................................3- 1
3.1.1 Unpacking and Chacking the Components .................................................................................................3- 1
3.1.2 Installation Procedure..................................................................................................................................3- 1
3.1.3 Making Adjustments ...................................................................................................................................3- 3
3.1.4 Ataching the Labels etc. ..............................................................................................................................3- 8
3.1.5 Checking the Operation...............................................................................................................................3- 9
Chapter 4 Parts Replacement Procedure
4.1 Removing from the Host Machine ....................................................................................................................4- 1
4.1.1 Feeder ..........................................................................................................................................................4- 1
4.2 Drive System .....................................................................................................................................................4- 2
4.2.1 Pickup Motor...............................................................................................................................................4- 2
4.2.2 Feed Motor ..................................................................................................................................................4- 3
4.2.3 Timing Belt/Pulley ......................................................................................................................................4- 5
4.3 Document Feeding System ................................................................................................................................4- 9
4.3.1 Pickup Roller Unit.......................................................................................................................................4- 9
4.3.2 Pickup Roller/Separation Roller................................................................................................................4- 10
4.3.3 Separation Plate/Separation Pad................................................................................................................4- 11
4.3.4 Upper Registration Roller .........................................................................................................................4- 12
4.3.5 Lower Registration Roller.........................................................................................................................4- 13
4.3.6 Delivery Reversing Roller (upper)............................................................................................................4- 20
4.3.7 Read Roller 1.............................................................................................................................................4- 24
4.3.8 Read Roller 2.............................................................................................................................................4- 30
4.3.9 Platen Roller..............................................................................................................................................4- 34
4.3.10 Delivery Reversing Roller (lower)..........................................................................................................4- 39
4.3.11 Read Roller Roll......................................................................................................................................4- 43
4.3.12 Separation Guide Sheet ...........................................................................................................................4- 44
4.3.13 Feed Roller Guide ...................................................................................................................................4- 45
4.4 Electrical System .............................................................................................................................................4- 46
4.4.1 ADF Controller PCB.................................................................................................................................4- 46
4.4.2 Inner Sensor of Feed Unit .........................................................................................................................4- 46
4.4.3 Document Width Volume .........................................................................................................................4- 53
4.4.4 ADF Open/Closed Sensor .........................................................................................................................4- 54
4.4.5 Cover Open/Closed Sensor .......................................................................................................................4- 55
4.4.6 Document Set Sensor ................................................................................................................................4- 56
4.4.7 Pressurization Solenoid .............................................................................................................................4- 56
Chapter 5 Maintenance
5.1 User Maintenance ..............................................................................................................................................5- 1
5.1.1Cleaning.......................................................................................................................................................5- 1
Contents
5.1.2Replacement ................................................................................................................................................ 5- 2
5.2 Maintenance and Inspection.............................................................................................................................. 5- 3
5.2.1 Periodically Replaced Parts ........................................................................................................................ 5- 3
5.2.2 Durables ...................................................................................................................................................... 5- 3
5.2.3 Periodical Servicing .................................................................................................................................... 5- 3
5.2.4 Cleaning ...................................................................................................................................................... 5- 6
5.3 Adjustment ...................................................................................................................................................... 5- 11
5.3.1 Basic Adjustment ...................................................................................................................................... 5- 11
5.3.2 Adjustment at Time of Parts Replacement ............................................................................................... 5- 18
5.4 Outline of Electrical Components ................................................................................................................... 5- 20
5.4.1sensors ....................................................................................................................................................... 5- 20
5.4.2Motors, Clutches, Solenoids, PCBs, and Others ....................................................................................... 5- 21
5.5 Variable Resistors (VR), Light-Emitting Diodes (LED), and Check Pins by PCB ........................................ 5- 22
5.5.1Overview ................................................................................................................................................... 5- 22
5.5.2ADF Controller PCB ................................................................................................................................. 5- 22
5.5.3Relay PCB ................................................................................................................................................. 5- 22
5.5.4Original Placement LED PCB................................................................................................................... 5- 23
Chapter 6 Error Code
6.1 Overview ........................................................................................................................................................... 6- 1
6.1.1Overview ..................................................................................................................................................... 6- 1
6.2 User Error Code................................................................................................................................................. 6- 2
6.2.1Alarm........................................................................................................................................................... 6- 2
Chapter 1 Specifications
Contents
Contents
1.1 Product Specifications........................................................................................................................................ 1-1
1.1.1 Specifications .............................................................................................................................................. 1-1
1.2 Names of Parts.................................................................................................................................................... 1-3
1.2.1 External View.............................................................................................................................................. 1-3
1.2.2 Cross Section............................................................................................................................................... 1-3
1.3 Using the Machine.............................................................................................................................................. 1-5
1.3.1 Original Placement Indicator....................................................................................................................... 1-5
1.3.2 Warning and Action .................................................................................................................................... 1-5
1.1 Product Specifications
Chapter 1
1.1.1 Specifications
Original pickup method auto pickup/delivery
Original orientation original tray: face-up
Original placement original tray: center reference
Original separation method top separation
Original type
T-1-1
Item Description Remarks
single-sided sheet: if longer than 432
AB-configuration: 42 to 128 g/m2
Inch-configuration: 50 to 128 g/m2
double-sided original: 50 to 128 g/
m2
colored original: 64 to 128 g/m2
black-and-white/color mix: 50 to
128 g/m2
mm in length, 60 to
90 g/m2; single feed
0001-9119
AB-configuration: B6/A5/B5/
A4/A5R/A4R/B4/A3
Inch-configuration: STMT/LTR/
LTRR/LGL/11"×17"
Original size
original width: 148 to 297 mm
original length (feed direction): 128
to 432 (630) mm
Stack on original tray 50 sheets paper of 80 g/m2
Stack on original delivery assembly 50 sheets paper of 80 g/m2
Original processing mode single-sided original processing
Original size identification yes (default size only)
if STMT/B6,
horizontal feed only
value in (()) is
supported by
operator
1-1
Chapter 1
Item Description Remarks
yes, of same configuration
yes, of different configurations
Original size mix
Book original supported (50 mm or less in
Original processing speed single-sided: 28 ipm for A4/LTR
Communication with host machine serial
Power supply DC24V POWER
Weight 8.5 kg (approx.)
Dimensions 565 (W) x 538 (D) x 122 (H) mm
Serial No.
combination of different paper
configurations
AB-configuration: A3/B4 A4/B5
B4/A4R B5/A5 A5/B6
thickness)
double-sided: 13 ipm
from host machine
DC13V LOGIC
A-model JESxxxxx
Inch/A-model JERxxxxx
AB-model JEQxxxxx
Inch/AB-model JEUxxxxx
Operating
environment
temperature
ra nge
humidity range same as host machine
same as host machine
1-2
1.2 Names of Parts
Chapter 1
1.2.1 External View
[3]
[2]
[1]
F-1-1
0000-9992
[4]
[6
[5]
[1] Feeder cover [4] Original pickup tray
[2] Rear cover [5] Front cover
[3] Slide guide [6] Original delivery assembly
1.2.2 Cross Section
[1] [2] [3]
[13]
[16]
[11][12][14][15]
F-1-2
[4]
[5] [6]
[10]
[9]
T-1-2
0001-0004
[7]
[8]
1-3
Chapter 1
[1] Lower registration roller
[2] Upper registration roller
[3] Separation roller
[4] Separation pad
[5] Separation plate
[6] Pickup roller
[7] Original pickup tray
[8] Upper delivery reversing roller
[9] Lower delivery reversing roller
[10] Read roller 2 roll
[11] Read roller 2
[12] Platen roller
[13] Read roll
[14] Read roller 1 roll
[15] Read roller 1
[16] White sheet
1-4
1.3 Using the Machine
Chapter 1
1.3.1 Original Placement Indicator
The original placement indicator goes on in response to the placement of an original in the original tray; it starts to
flash in response upon detection of an original jam.
Original placement indicator
F-1-3
1.3.2 Warning and Action
0001-0022
0001-0026
If the original placement indicator starts to flash while an original is being moved, suspect a jam, and correct the fault
by going through the following:
1) Remove all originals from the original tray.
2) Open the feeder cover, and remove any jam.
3) Put the originals back and in sequence together, and place the stack in the ADF once again.
1-5
Chapter 2 Functions
Contents
Contents
2.1 Basic Construction ............................................................................................................................................. 2-1
2.1.1 Overview of the Electrical Circuitry ........................................................................................................... 2-1
2.1.2 Inputs to the ADF Controller PCB.............................................................................................................. 2-1
2.1.3 Outputs from the ADF Controller PCB....................................................................................................... 2-2
2.2 Basic Operation .................................................................................................................................................. 2-4
2.2.1 Route of Drive ............................................................................................................................................. 2-4
2.2.2 Overview of Operation Mode...................................................................................................................... 2-4
2.2.3 Clockwise Pickup/Delivery (single-sided original -> single-sided print) ...................................................2-5
2.2.4 Clockwise Pickup/Reversal Deliver (double-sided original -> double-sided print) ................................... 2-6
2.2.5 Idle Circulation/Pickup/Delivery (size-mix double-sided original -> double-side print) ........................... 2-8
2.2.6 Idle Circulation/Reversal Pickup/Delivery (size-mix single-sided original -> single-sided print) ........... 2-11
2.3 Document Detection......................................................................................................................................... 2-14
2.3.1 Overview ................................................................................................................................................... 2-14
2.3.2 Checking the Presence/Absence of an Original ........................................................................................ 2-15
2.3.3 Detecting the Last Original ....................................................................................................................... 2-15
2.3.4 Initial Original Size Detection (feed direction) ......................................................................................... 2-16
2.3.5 Initial Original Size Detection (cross feed direction)................................................................................ 2-16
2.3.6 Slide Guide Positioning Roll ..................................................................................................................... 2-18
2.3.7 Last Original Size Detection ..................................................................................................................... 2-19
2.4 Document Pickup/Separation ........................................................................................................................... 2-22
2.4.1 Basic Sequence of Operation .................................................................................................................... 2-22
2.4.2 Pickup Unit and the Stopper...................................................................................................................... 2-23
2.4.3 Timing of Pickup....................................................................................................................................... 2-24
2.4.4 Controlling the Pickup Motor (M2) .......................................................................................................... 2-24
2.5 Document Reversing ........................................................................................................................................ 2-26
2.5.1 Basic Sequence of Operation .................................................................................................................... 2-26
2.5.2 Sequence of Operation .............................................................................................................................. 2-27
2.6 Document Feeding/Delivery ............................................................................................................................ 2-28
2.6.1 Basic Sequence of Operation .................................................................................................................... 2-28
2.6.2 Sequence of Operation .............................................................................................................................. 2-29
2.6.3 Controlling the Feed Motor (M1).............................................................................................................. 2-29
2.7 Detecting Jams ................................................................................................................................................. 2-31
2.7.1 Jams ........................................................................................................................................................... 2-31
2.8 Power Supply ................................................................................................................................................... 2-32
2.8.1 Power Supply ............................................................................................................................................ 2-32
2.1 Basic Construction
Chapter 2
2.1.1 Overview of the Electrical Circuitry
0001-0068
The electrical mechanisms of the machine are controlled by the reader controller PCB. The CPU of the reader unit
interprets input signals and the signals from the host machine, and generates signals used to drive such DC loads as
motors and solenoids. The ADF controller PCB does not have a memory area, and the EEPROM of the reader
controller PCB is used to store such data as service mode settings.
ADF controller PCB
Motor
Senso
CPU
(IC1)
Serial
communic
+24V +5V
5-VDC
supply
J2-2
24V
13V
power
(IC2)
J1-6
Solenoid
Original
indicator LED
PCB
CPU
EEPROM
Reader controller PCB
F-2-1
2.1.2 Inputs to the ADF Controller PCB
Inputs to the ADF Controller PCB (1/1)
0001-0106
2-1
Chapter 2
ADF
open/closed
sensor
Registration
paper sensor
Read sensor
Delivery
reversal
sensor
A4R/LTRR
sensor
Length
sensor 1
Length
sensor 2
PI1
PI2
PI3
PI4
PI5
PI6
PI7
J301F
-3
-1
-2
J302F
-3
-1
-2
J303F
-3
-1
-2
J304F
-3
-1
-2
J305F
-3
-1
-2
J306F
-3
-1
-2
J307F
-3
-1
-2
J102F
-1
-2
-3
J102F
-4
-6
-5
J102F
-7
-9
-8
+5V
+5V
+5V
J13T
-9
-1
-7
-3
-8
-2
-6
-4
-4
-6
-5
-5
-3
-7
-1
-9
-2
-8
Relay PCB
J101F
-7
-6
-5
-4
-3
-2
-1
ADF controller PCB
+5V
J3F
-1
-3
ADFOP
-2
+5V
J3F
-4
-6
REGS
-5
+5V
J3F
-7
-9
READS
-8
+5V
J3F
-10
-12
EJTS
-11
+5V
J5F
-1
-2
-3
A4R/LTR
J6F
-1
LENG1S
-2
LENG2S
-3
ENDS
-4
VR
when the ADF is opened, '1'.
when paper is present, '0'.
when paper is present, '1'.
when paper is present, '1'.
when paper is A4R, '1'.
when paper is LTRR, '0'.
when paper is present, '1'.
when paper is present, '1'.
when paper is present, '1'.
detects the width of the original
(analog signal)
Last original
sensor
Original width
volume
Original
placement
sensor
Cover
open/closed
sensor
PI8
VR1
PI9
PI10
J308F
-3
-1
-2
J309F
-3
-1
-2
J310F
-3
-1
-2
J102F
-10
-12
-11
J102F
-13
-15
-14
+5V
+5V
J4F
J4F
-1
-3
-2
-4
-6
-5
+5V
when paper is present, '1'.
EMPS
+5V
when the cover is opened, '1'.
COVERS
F-2-2
2.1.3 Outputs from the ADF Controller PCB
Outputs from the ADF Controller PCB (1/1)
0001-0108
2-2
Stamp
solenoid
Locking
solenoid
Pickup motor
Feed motor
SL1
SL2
M2
M1
Chapter 2
ADF controller PCB
+24V
J14
-1
-2
-2
-1
J11
-1
-2
STAMP_SL
when '0', SL1 goes on.
+24V
J10
-2
-1
A_SL when '0', SL2 goes on.
J8
+24V
-1
-2
-3
M2A
-4
M2A*
-5
M2B
-6
M2B*
J7
+24V
-1
-2
-3
M1A
-4
M1A*
-5
M1B
-6
M1B*
Original
placement
LED
F-2-3
LED
J201
1
2
J11
+24V
-3
-4
LED
when '0', on.
2-3
Chapter 2
2.2 Basic Operation
2.2.1 Route of Drive
0001-0111
The machine is a document feeder exclusively designed for stream reading. It uses 2 motors for picking up and
moving originals.
T-2-1
Name (notation) Description
Feed motor (M1) moves originals.
Pickup motor (M2) separates/moves originals.
The following is a diagram showing the route of drive used in the machine:
ADF controller PCB
Pickup motor drive signal J8
Original detection signal (REGS) J3-6
Original detection signal (READS) J3-9
PI2
PI3
Original detection signal (EJTS) J3-12
PI4
Feed motor drive signal J7
Original placement signal (EMPS) J4-3
Locking solenoid drive signal (A-SL) J11-2
Stamp solenoid drive signal (STAMP_SL) J10-2
1
PI9
Last original detection signal (ENDS) J6-3
Paper size identification signal 2 (LENG2S) J6-1
2
PI6
Paper size identification signal 1 (LENG1S) J6-2
PI7
F-2-4
2.2.2 Overview of Operation Mode
0001-0117
The machine operates in any of the following 4 operating modes, used in keeping with the instructions from the
2-4
machine to execute print jobs; these modes may be characterized as follows:
T-2-2
Chapter 2
Operating mode Operation
[1] clockwise pickup/
delivery
[2] clockwise pickup/
reversal delivery
[3] idle circulation/
reversal pickup/reversal
delivery
[4] idle circulation/
reversal pickup/delivery
picks up an original, reads it, and
delivers it.
picks up an original, reads it,
turns it over, and delivers it.
circulates an original idly to
identify its size; then, circulates
the original idly for starting with
its face; finally, picks up the
original, reads it, turns it over,
and delivers it.
circulates an original idly to
identify its size; then, turns it
over, reads it, and delivers it.
Corresponding print
mode
single-sided original ->
single-sided print
single-sided original ->
double-sided print
double-sided original ->
double-sided print
double-sided original ->
single-sided print
size-mix double-sided
original -> double-sided
print
size-mix double-sided
original -> single-side
print
size-mix single-sided
original -> single-side
print
size-mix single-sided
original -> double-sided
print
An original may be of small-size or large-size as shown:
T-2-3
Small-size B6, A5R, A5, A4, B5, LTR, STMT
Large-size A4R, B5R, A3, B4, LTRR, LGL, 11"×17"
2.2.3 Clockwise Pickup/Delivery (single-sided original -> single-sided
print)
The following shows the flow of an original:
0001-0169
2-5
Chapter 2
Original
Pickup
Arching
In wait for reading
Delivery
Reading
F-2-5
2.2.4 Clockwise Pickup/Reversal Deliver (double-sided original ->
double-sided print)
The following shows the flow of an original:
2-6
0001-0179
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