Canon NP6320 Manuel utilisateur

1999 CANON INC. CANON NP6320 REV.0 DEC. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

REVISION 0

FY8-13GF-000

DEC. 1999

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1999 CANON INC. CANON NP6320 REV.0 DEC. 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.

ANYQUESTIONSREGARDINGINFORMATIONCONTAINEDHEREINSHOULDBE DIRECTED

TO THE COPIER SERVICE DEPARTMENT OFTHE SALES COMPANY.

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

MATION 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 DIVISION

OFFICE IMAGING PRODUCTS QUALITY ASSURANCE CENTER

CANON INC.

5-1, Hakusan 7-chome,Toride-shi, Ibaraki 302-8501 Japan

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This Service Manual contains basic data and figures for the NP6320 needed to

service the machine in the field.

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 operational

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 how images are formed.

It also explains the timing at which the various units involved in image

formation are operated, and shows how they may be disassembled/

assembled and adjusted.

Chapter 5

Pick-Up/Feeding System

explains the principles used from when copy paper

is picked up to when a copy is delivered in view of the functions of electrical

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

how these units may be disassembled/assembled and adjusted.

Chapter 6

Fixing System

explains the principles used to fuse toner images to tranfer

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 7

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 8

Installation

introduces requirements for the site of installation, and shows

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

Chapter 9

Maintenance and Servicing

provides tables of periodically replaced parts and

consumables/durables and scheduled servicing charts.

Chapter 10

Troubleshooting

provides tables of maintenance/inspection, standards/

adjustments, and problems identification (image fault/malfunction).

Appendix contains diagrams showing electrical parts arrangement, tables of

signals, tables of special tools, tables of solvents/oils, and a general timing

chart.

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

from 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.

INTRODUCTION

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System Configuration

The NP6320 is designed to accommodate the following for fully automated copy work:

ADF-A1

A stack of documents may be placed for

automatic pick-up and feed.

Sorter-A1

Up to 20 copies may be automatically sorted or

grouped by page.

MS-A1

Up to 10 sets of copies may be automatically sorted

or grouped by page.

Stapler Sorter-D3

Up to 10 sets of copies

may be automatically

sorted. Further, copies

may be automatically

sorted and then stapled in

sequence.

Paper Deck Pedestal-J1

Accommodates

as many as 1000

sheets of copy paper.

Control Card V

With the card, the volume of copy work

may be put under control.

ADF-D1

The fastest and easiest way to copy.

Place originals in this feeder and they

are automatically fed to the platen

glass.

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iii

CONTENTS

CHAPTER 1 GENERAL DESCRIPTION

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

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

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

B. Construction ..........................1-2

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

D. Others....................................1-3

III. NAMES OF PARTS......................1-5

A. External View ........................1-5

B. Cross Section........................1-6

IV. OPERATION ................................1-7

A. Control Panel.........................1-7

B. Setting the Auto Shut-Off

Time ......................................1-9

C. Daily Inspection to Be

Performed by the User ..........1-9

V. IMAGE FORMATION

PROCESS................................. 1-11

A. Outline................................ 1-11

CHAPTER 2 BASIC OPERATION

CHAPTER 3 EXPOSURE SYSTEM

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

A. Functions...............................2-1

B. Outline of Electric Circuitry ...2-2

C. Inputs to the DC Controller ...2-4

D. DC Controller Outputs...........2-7

E. Basic Sequence of Operations

(Direct, continuous copying, 2

sheets)................................ 2-10

I. BASIC OPERATION ....................3-1

A. Changing the Reproduction

Ratio ......................................3-1

II. LENS DRIVE SYSTEM................3-2

A. Outline...................................3-2

B. Basic Lens Drive System

Operation (change of

reproduction ratio).................3-4

III. SCANNER DRIVE SYSTEM .......3-5

A. Outline...................................3-5

B. Relation Between Scanner

Sensor and Signals...............3-6

C. Basic Scanner Operation......3-7

D. Scanner Motor Drive System

Operation ..............................3-8

E. Scanner Movement for Two-

Page Separation Mode

(copy count 2) .................... 3-10

F. Document Size

Identification ....................... 3-11

IV. DISASSEMBLY AND

ASSEMBLY ............................... 3-14

A. Lens Drive Assembly ......... 3-14

B. Scanner Drive Assembly.... 3-16

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I. IMAGE FORMATION SYSTEM ...4-1

A. Outline...................................4-1

B. Basic Operation of Image

Formation System .................4-2

II. CONTROLLING THE SCANNING

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

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

B. Mechanism............................4-4

III. PRIMARY/TRANSFER CORONA

CURRENT AND GRID BIAS

VOLTAGE CONTROL SYSTEM ..4-5

A. Outline...................................4-5

B. Switching Primary/Transfer

Corona Current ON/OFF.......4-5

C. Maintaining Primary/Transfer

Corona Current Constant......4-6

D. Controlling Grid Bias Voltage 4-7

IV. CONTROLLING THE

DEVELOPING BIAS ....................4-8

A. Outline...................................4-8

B. Operation ..............................4-9

C. Developing Bias

Operation ........................... 4-11

V. DOCUMENT DENSITY

MEASUREMENT SYSTEM ...... 4-12

A. Outline................................ 4-12

B. Operation ........................... 4-12

C. Reading the Output of the AE

Sensor................................ 4-13

VI. DEVELOPING ASSEMBLY/

DRUM CLAENER ..................... 4-14

A. Outlines .............................. 4-14

B. Remaining Toner Sensor.... 4-14

C. Torque Limiter .................... 4-14

VII. BLANKING................................ 4-15

A. Outline................................ 4-15

B. Movement of the Blank

Exposure Mechanism ........ 4-16

VIII.DISASSEMBLY AND

ASSEMBLY ............................... 4-18

A. Exposure Assembly ........... 4-18

B. Blank Assembly.................. 4-20

C. CORONA SYSTEM............ 4-21

D. Development System ......... 4-24

I. PAPER TRANSPORT

SYSTEM ......................................5-1

A. Paper Pick-up Assembly and

Feeder ...................................5-1

B. Pick-up and Feeder

Operation ..............................5-3

C. Identifying the Cassette

Size .......................................5-4

D. Pick-Up from the

Multifeeder.............................5-5

II. JAM DETECTION ........................5-7

A. Pick-up Assembly Delay

Jam........................................5-8

B. Delivery Assembly Stationary

Jam........................................5-9

C. Delivery Assembly Delay

Jam........................................5-9

III. FEEDER SYSTEM.................... 5-10

A. Pick-up Assembly............... 5-10

B. Feeder Assembly ............... 5-17

C. Main Motor Assembly......... 5-21

CHAPTER 4 IMAGE FORMATION SYSTEM

CHAPTER 5 PICK-UP/FEEDING SYSTEM

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I. BASIC OPERATIONS ..................6-1

A. Outline...................................6-1

B. Operation of the Fixing

Assembly Temperature Control

System ..................................6-3

II. DISASSEMBLY AND

ASSEMBLY ..................................6-4

A. Fixing Assembly ....................6-4

CHAPTER 6 FIXING SYSTEM

CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS

I. POWER SUPPLY.........................7-1

A. AC Power/DC Power

Supply ...................................7-1

II. DISASSEMBLY AND

ASSEMBLY ..................................7-3

CHAPTER 8 INSTALLATION

CHAPTER 9 MAINTENANCE AND SERVICING

A. External Covers.....................7-3

B. Control Panel.........................7-6

C. Copyboard Cover ..................7-7

D. Fans.......................................7-7

E. PCBs .................................. 7-10

I. LOCATION ...................................8-1

II. UNPACKING AND INSTALLING

THE COPIER ...............................8-2

A. Unpacking .............................8-2

B. Mounting the Drum ...............8-5

C. Checking the Operation ........8-6

D. Adding Toner .........................8-7

E. Checking the Image ..............8-8

III. SETTING THE CASSETTE

SIZE .............................................8-9

A. Modifying the Cassette

Size .......................................8-9

B. Replacing the Cassette

Spring................................. 8-14

C. Removing the Pick-up

Roller .................................. 8-16

IV. RELOCATING THE COPIER .... 8-17

V. INSTALLING THE CONTROL

CARD-V .................................... 8-18

I. PERIODICALLY REPLACED

PARTS..........................................9-1

II. DURABLE PARTS .......................9-2

III. BASIC PROCEDURE FOR

PERIODIC SERVICING...............9-3

IV. PERIODIC SERVICING

SCHEDULE .................................9-4

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APPENDIX

CHAPTER 10 TROUBLESHOOTING

I. MAINTENANCE AND

INSPECTION ............................ 10-1

A. Basic Image Adjustment

Procedure........................... 10-1

B. Periodic Maintenance Check

Points ................................. 10-2

II. STANDARDS AND

ADJUSTMENTS ....................... 10-3

A. Mechanical ......................... 10-3

B. Electrical........................... 10-17

III. IMAGE TROUBLE-

SHOOTING ............................. 10-22

A. Initial Check...................... 10-22

B. Samples of Image Faults . 10-26

C. Troubleshooting of Image

Faults................................ 10-27

IV. OPERATION TROUBLE-

SHOOTING ............................. 10-39

A. Troubleshooting of

Malfunction....................... 10-39

V. TROUBLESHOOTING THE

FEEDING PROBLEMS ........... 10-56

A. Paper Jams ...................... 10-56

VI. INCORRECT PAPER FEED

OPERATION ........................... 10-60

VII. FUNCTION AND ARRANGE-

MENT OF THE ELECTRICAL

PARTS..................................... 10-62

A. Sensors, Fuses and

Lamps............................... 10-62

B. Clutches, Solenoids, Fans,

Motors and Heaters ......... 10-63

C. Switches, Circuit Breakers,

Counters, Etc. .................. 10-64

D. PCBs ................................ 10-65

VIII.SERVICE MODE..................... 10-66

A. Outline.............................. 10-66

B. Using the Service Mode... 10-66

C. Guide to Service Mode .... 10-67

IX. SELF DIAGNOSIS .................. 10-70

A. Self-Diagnosis .................. 10-70

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

B. LIST OF SIGNALS/

COMMANDS............................... A-3

C. GENERAL CURCUIT

DIAGRAM ................................... A-5

D. LIST OF SPECIAL TOOLS ......... A-7

E. LIST OF SOLVENTS AND

MATERIALS ................................ A-8

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CHAPTER 1

GENERAL DESCRIPTION

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

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

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

B. Construction ..........................1-2

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

D. Others....................................1-3

III. NAMES OF PARTS......................1-5

A. External View ........................1-5

B. Cross Section........................1-6

IV. OPERATION ................................1-7

A. Control Panel.........................1-7

B. Setting the Auto Shut-Off

Time ......................................1-9

C. Daily Inspection to Be

Performed by the User ..........1-9

V. IMAGE FORMATION

PROCESS................................. 1-11

A. Outline................................ 1-11

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