Canon DU-82 Bedienungsanleitung

SERVICE

MANUAL

REVISION 0

RY8-1396-000

JAN. 1999

DUPLEXING UNIT

Printed in Japan

Imprimé au Japon

Use of this manual should be

strictly supervised to avoid

disclosure of confidential

information.

Prepared by

PERIPHERAL PRODUCTS QUALITY PLANNING DIV.

PERIPHERAL PRODUCTS TECHNICAL DOCUMENTATION DEPT.

CANON INC.

5-1, Hakusan 7-chome, Toride-City, Ibaraki-Pref. 302-8501, Japan

PREFACE

This Service Manual contains basic information required for after-sales service of the

Duplexing unit DU-82. This information is vital to the service technician in maintaining the

high print quality and performance of the duplexing unit.

This manual consists of the following chapters:

Chapter 1: Product information

Features, specifications, parts of the duplexing unit, and installation

Chapter 2: Operation and Timing

A description of the operating principles and timing sequences of the electrical and

mechanical systems.

Chapter 3: The Mechanical System

Explanation of mechanical operation, disassembly, reassembly, and adjustment

procedures

Chapter 4: Troubleshooting

Maintenance and servicing, measurement and adjustments, troubleshooting

procedures, and location of electrical components

Appendix: General timing chart, general circuit diagram, and list of signals.

Information in this manual is subject to change as the product is improved or redesigned.

All relevant information in such cases will be supplied in Service Information Bulletins.

A thorough understanding of this unit, based on information in this Manual and Service

Information Bulletins is required for maintaining its performance and for locating and repairing

malfunctions.

DTP system

This manual was produced on an Apple PowerMacintosh 9500/200 personal computer and output by an

Apple LaserWriter 16/600 PS laser beam printer; final pages were printed on AGFA Selectset avantra 25.

All graphics were produced with Macromedia FreeHand (J), and all documents and page layouts were

created with QuarkXPress (E).

The video images were captured with SONY degital video camcorder and Radius PhotoDV capture

board system, and modified with Adobe Photoshop(J).

CONTENTS
CHAPTER 1 PRODUCT INFORMATION
I. FEATURES ............................. 1-1
II. SPECIFICATIONS.................... 1-2
III. PARTS OF THE DUPLEXING
UNIT ...................................... 1-3
A. External Views .................. 1-3
B. Cross Sectional Views........ 1-3
IV. INSTALLATION ....................... 1-4
CHAPTER 2 OPERATION AND TIMING
CHAPTER 3 THE MECHANICAL SYSTEM
CHAPTER 4 TROUBLESHOOTING
I. BASIC OPERATION ................. 2-1
A. Outline of the Electrical
System .............................. 2-1
B. Duplexing Driver Input
Signals .............................. 2-2
C. Duplexing Driver Output
Signals .............................. 2-3
II. PAPER PICK-UP/FEED 
SYSTEM ................................. 2-4
A. Operation .......................... 2-4
B. Paper Jam Detection ......... 2-10
I. PREFACE .............................. 3-1
II. EXTERNALS .......................... 3-2
A. Locations ......................... 3-2
B. External Covers ................ 3-3
III. SENSORS .............................. 3-5
A. Locations ......................... 3-5
B. Duplex Feed Roller 1
Home Position Sensor ...... 3-6
C. Duplexing Unit Paper
Sensor .............................. 3-6
D. Side Registration Guide
Home Position Sensor ...... 3-7
E. Reversing Sensor .............. 3-7
IV. CLUTCH/SOLENOIDS ............ 3-8
A. Locations ......................... 3-8
B. Reversing Roller Release
Solenoid ........................... 3-9
C. Duplex Deflector Solenoid 3-10
D. Duplex Feed Clutch .......... 3-11
V. MOTORS ............................... 3-12
A. Locations ......................... 3-12
B. Duplexing Unit Motor ....... 3-13
C. Side Registration Motor .... 3-13
VI. ELECTRICAL PARTS .............. 3-14
A. Locations ......................... 3-14
B. Duplexing Driver PCB ....... 3-15
I. PREFACE ............................... 4-1
A. Malfunction Diagnosis
Flowchart .......................... 4-1
B. Initial Checks.................... 4-3
II. IMAGE DEFECTS.................... 4-4
III. PAPER JAMS .......................... 4-5
IV. PAPER TRANSPORT
MALFUNCTION....................... 4-6
V. MALFUNCTION
TROUBLESHOOTING .............. 4-7
VI. MALFUNCTION STATUS
TROUBLESHOOTING .............. 4-9

VII. MEASUREMENT AND

ADJUSTMENT ........................ 4-11

A. Mechanical Adjustment ..... 4-11

B. Electrical Adjustment........ 4-11

C. Variable resistors, LEDs,

test pins, jumpers, and

switches on PCB ................ 4-11

VIII.MAINTENANCE AND

SERVICING............................. 4-12

A. Periodic Replacement

Parts ................................. 4-12

B. Expected Lives of Consumable

Parts ................................. 4-12

C. Regular Servicing

Schedule ........................... 4-12

D. Standard Tools .................. 4-12

E. Special Tools ..................... 4-12

F. List of Lubricants and

Cleaners ............................ 4-12

IX. LOCATION OF CONNECTORS.. 4-13

APPENDIX

I. GENERAL TIMING CHART ...... A-1

II. GENERAL CIRCUIT DIAGRAM. A-2

III. LIST OF SIGNALS ................... A-3

CHAPTER 1

PRODUCT INFORMATION

I. FEATURES ............................. 1-1

II. SPECIFICATIONS.................... 1-2

III. PARTS OF THE DUPLEXING

UNIT ...................................... 1-3

IV. INSTALLATION ....................... 1-4

1 - 1

CHAPTER 1

I. FEATURES

1. Optional built-in type duplexing unit

The duplexing unit is compact in size and can be installed inside the printer.

II. SPECIFICATIONS

1. Print paper A3, A4, B4, A5, B5, Ledger, Legal, Letter and Executive size plain

paper (64g/m2- 105g/m2recommended paper)

2. Power supply DC24V (supplied from printer)

3. Dimensions 379 (W) ×423 (D) ×82 (H) mm

4. Weight About 3.5kg

Specifications are subject to change with product modification.

1 - 2

CHAPTER 1

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