Canon GP405 Manuel utilisateur

1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

REVISION 0

JAN. 1999 FY8-13FV-000

GP405/335

1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

IMPORTANT

THIS DOCUMENTATION IS PUBLISHED BY CANON INC., JAPAN, TO SERVE AS A SOURCE

OF REFERENCE FOR WORK IN THE FIELD.

SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN MAY VARY SLIGHTLY

FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND OTHER

PRINTED MATTER.

ANYQUESTIONSREGARDINGINFORMATIONCONTAINEDHEREINSHOULD BEDIRECTED

TO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY.

THIS DOCUMENTATION IS INTENDED FOR ALL SALES AREAS, AND MAY CONTAIN IN-

FORMATION NOT APPLICABLE TO CERTAIN AREAS.

Printed in Japan

Imprimé au Japon

Use of this manual should be strictly su-

pervised to avoid disclosure of confidential

information.

Prepared by

OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1

OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION

CANON INC.

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

1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

The copier is a multi-function copier capable of serving as a copier, fax, and printer.

This Service Manual provides information needed to service the copier in the field. For

information on technologies used in common with the existing copiers, refer to the "Copier

Basic Series" as necessary.

This Service Manual consists of the following chapters:

Chapter 1 General Description introduces the copier's features and

specifications, shows how to operate the copier, and explains how

copies are made.

Chapter 2 Basic Operation provides outlines of the copier's various mechanical

workings.

Chapter 3 Exposure System discusses the principles of operation used for the

copier's lens drive unit and scanner drive unit. It also explains the

timing at which these drive units are operated, and shows how they

may be disassembled/assembled and adjusted.

Chapter 4 Image Formation System discusses the principles of operation used

for the copier's image processing units. It also explains the timing at

which the various units involved in image processing are operated,

and shows how they may be disassembled/assembled and adjusted.

Chapter 5 Laser Exposure System discusses the principles of operation used for

the copier's laser unit. It also explains the timing at which the unit is

operated, and shows how they may be disassembled/assembled and

adjusted.

Chapter 6 Image Formation System discusses the principles of how images are

formed. It also explains the timing at which the various units involved in

image formation are operated, and show how they may be

disassembled/assembled and adjusted.

Chapter 7 Pick-Up/Feeding System explains the principles of picking up and

feeding copy paper in view of the functions of electrical and

mechanical units used to move copy paper and in relation to their

timing of operation. It also shows how these units may be

disassembled/assembled and adjusted.

Chapter 8 Side Paper Deck explains the principles of operation used from when

paper is picked up to when copies are delivered. It also explains the

timing at which various drive units are operated, and shows how they

may be disassembled/assembled and adjusted.

Chapter 9 Fixing System explains the principles used to fuse toner images to

transfer media in view of the functions of electrical and mechanical

units and in relation to their timing of operation. It also shows how

these units may be disassembled/assembled and adjusted.

Chapter 10 Externals/Auxiliary Mechanisms shows the copier's external parts, and

explains the principles used for the copier's various control

mechanisms in view of the functions of electrical and mechanical units

and in relation to their timing of operation. It also shows how these

units may be disassembled/assembled and adjusted.

Chapter 11 Systems explains connections and specifications related to systems

and shows how to disassemble and assemble them.

Chapter 12 Installation introduces requirements for the site of installation, and

shows how the copier may be installed using step-by-step instructions.

INTRODUCTION

1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

Chapter 13 Maintenance and Servicing provides tables of periodically replaced

parts and consumables/durables and scheduled servicing charts.

Chapter 14 Troubleshooting provides tables of maintenance/inspection,

standards/adjustments, and problem identification (image fault/

malfunction).

Appendix contains a general timing chart and general circuit diagrams.

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.

For a full understanding of the copier, this Service Manual should be used side by side

with the separately available "Copier Basic Series." Refer to the descriptions in each of

the following volumes:

Volume 1

Volume 2

Volume 3

Volume 4

Volume 5

Volume 6

Volume 7

1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

iii

System Configuration

The copier may be configured with its accessories as follows:

nPick-Up/Delivery Accessories

[1] DADF-A1

[2] Finisher-C1

[3] Multi Output Tray C1

[4] Saddle Finisher C2

[5] Finisher-E1

[6] Cassette Feeding Unit-S1

[7] Cassette Feeding Unit-R1

[8] Paper Deck-B1

[3]

[2]

[5]

[8]

[4]

[6]

[7]

[1]

1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

nSystem Accessories

[1] Handset-C1 [120V ONLY]

[2] Expansion Board Base Unit-C1

[3] SCSI Interface Board-D1

[4] Printer Board

[5] Super G3 FAX Board

[6] Battery Board-A1

* PDL I/F Board.

[1]

[5]

[4]

[3]

[2] [6]

1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

When Turning Off the Main Power Switch

Be sure always to turn off the main power switch and disconnect the power plug before starting

disassembly work. In addition,

1. When expanding the fax functions, the secondary battery used to retain fax memory images

will start to operate as soon as the main power switch is turned off. Be sure to complete any

work within one hour if the main power switch must be kept off. (Be sure also to keep the

machine powered at least for one week after installation.)

2. The communication memory lamp on the control panel indicates the presence/absence of fax

memory images. If it is on (indicating the presence of images), be sure to print out the images

before turning off the main power switch and disconnecting the power plug.

3. Turing off the control panel power switch will not remove power from some units. Be sure

always to turn off the main power switch before starting disassembly/assembly work.

4. The power will not be removed even when the front door is opened as long as the control panel

power switch and the main power switch are both on.

COPY

FAX

OPTIONS

Communication memory lamp

Control panel power switch

Main power lamp

Main power

switch

Cassette heater

switch

1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

Connectors for the Pick-Up/Delivery Accessories

When connecting accessories, be sure to use the connectors indicates in the diagram. If, for

example, you connect the paper deck to the cassette pedestal connector and turn on the paper, the

fuse on the paper deck PCB will blow, at times requiring replacement with a new PCB.

For the Feeder

For the Paper deck

For the Cassette Feeding Unit

For the Finisher

Figure. Rear View of the Body

1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

vii

CONTENTS

CHAPTER 1 GENERAL DESCRIPTION

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

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

A. Type........................................1-2

B. Method ...................................1-2

C. Performance...........................1-3

D. Paper Deck-B1.......................1-4

E. Others ....................................1-5

F. Default Ratios.........................1-6

G. Copying Speed ......................1-7

III. NAMES OF PARTS.....................1-9

A. External view..........................1-9

B. Cross Section...................... 1-11

IV. OPERATION............................. 1-13

A. Turning On the Power ......... 1-13

B. Control Panel ...................... 1-14

C. Special Features Modes ..... 1-15

D. Additional Functions ........... 1-16

V. ROUTINE MAINTENANCE BY

THE USER ............................... 1-19

VI. SAFETY ................................... 1-20

A. Safety of Laser Light (CLASS 1

LASER PRODUCT) ............ 1-20

B. CDRH Regulations ............. 1-21

C. Handling the Laser Unit ...... 1-22

D. Safety of Toner .................... 1-24

VII. IMAGE FORMATION................ 1-25

A. Outline................................. 1-25

CHAPTER 2 BASIC OPERATION PROVIDES

I. BASIC OPERATION....................2-1

A. Functional Construction .........2-1

B. Outline of the Electrical

Circuitry..................................2-2

C. Sequence of Operations ........2-4

D. Main Motor (M1) Control

Circuit .....................................2-8

E. Inputs to and Outputs from

the Major PCBs................... 2-10

viii

1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

CHAPTER 4

IMAGE FORMATION SYSTEM

I. OUTLINE.....................................4-1

II.

ANALOG IMAGE PROCESSING..

4-3

A. Outline....................................4-3

B. CCD .......................................4-3

C. AE Processing

(ABC processing)...................4-4

D. A/D Conversion ......................4-5

E. Analog Signal Processing

Block ......................................4-6

III.

DIGITAL IMAGE PROCESSING ...

4-7

A. Outline....................................4-7

CHAPTER 5 LASER EXPOSURE SYSTEM

I. OUTLINE.....................................5-1

II.

GENERATING THE BD SIGNAL ..

5-3

III. LASER DRIVER PCB .................5-5

A. Outline....................................5-5

B. Stabilizing the Laser Output...5-6

C. Switching the Laser Activation

Mode ......................................5-7

D. Switching the Laser Output....5-7

B. Shading Correction ................4-8

C. Total Processing.....................4-9

D. Density Processing ............. 4-12

E. Binary Processing............... 4-16

F. Image Memory .................... 4-19

G. Overlay Copying.................. 4-21

IV. DISASSEMBLY/ASSEMBLY .... 4-22

A. CCD Unit............................. 4-23

B. IP PCB ................................ 4-24

Replacing the ROM DIMM

(on the image processor PCB)..

4-25

IV. CONTROLLING THE LASER

SCANNER MOTOR ....................5-8

A. Outline of Operations.............5-8

B. Turning On and Off the Laser

Scanner Motor .......................5-9

V. DISASSEMBLY/ASSEMBLY .... 5-10

A. Laser Scanner Assembly.... 5-11

CHAPTER 3 EXPOSURE SYSTEM

I. OUTLINE OF OPERATIONS ......3-1

A. Outline....................................3-1

B. Sequence of Operations

(original exposure system).....3-2

II. SCANNER DRIVE SYSTEM.......3-3

III. CONTROLLING THE SCANNING

LAMP...........................................3-4

A. Outline....................................3-4

B. Controlling the Pre-Heating

Mechanism.............................3-5

C. Turning On and Off the

Scanning Lamp ......................3-5

D. Controlling the Intensity .........3-5

E. Detecting Errors .....................3-6

IV. IDENTIFYING THE SIZE OF AN

ORIGINAL ...................................3-7

A. Outline....................................3-7

B. Identifying the Size by the

Paper Sensors (1)..................3-7

C. Identifying the Size by the

Paper Sensors (2)..................3-9

D. Identifying the Size by the

Original Width/Length Sensor

of the Feeder....................... 3-10

V. DISASSEMBLY/ASSEMBLY .... 3-11

A. Scanning System ................ 3-12

B. Scanner Drive Assembly..... 3-13

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