Canon NP6317 Service Manual

4.5 (2)

REVISION 0

APR. 1999

FY8-13G5-000

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 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.

ANY QUESTIONS REGARDING INFORMATION CONTAINED HEREIN SHOULD BE DIRECTED TO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY.

THIS DOCUMENTATION IS INTENDED FOR ALL SALES AREAS, AND MAY CONTAIN INFORMATION NOT APPLICABLE TO CERTAIN AREAS.

COPYRIGHT © 1999 CANON INC.

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 3 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

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

INTRODUCTION

This Service Manual contains basic data and figures for the Stapler Sorter-J1/K1/E3 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 Installtion 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.

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

i

CONTENTS

CHAPTER 1 GENERAL DESCRIPTION

I.

FEATURES ..................................

1-1

B.

Cross Section .......................

1-6

II.

SPECIFICATIONS .......................

1-2

IV. OPERATION ................................

1-8

 

A.

Type .......................................

1-2

A.

Control Panel.........................

1-8

 

B.

System ..................................

1-2

B.

Daily Inspection to Be

 

 

C.

Performance ..........................

1-2

 

Performed by the User .......

1-10

 

D.

Others....................................

1-3

V. IMAGE FORMATION ................

1-11

III. NAMES OF PARTS ......................

1-5

A.

Outline ................................

1-11

 

A.

External View ........................

1-5

 

 

 

CHAPTER 2 BASIC OPERATION

I. BASIC OPERATION ....................

2-1

D.

DC Controller Outputs ...........

2-6

A.

Functions ...............................

2-1

E.

Basic Sequence of Operations

B. Outline of Electric Circuitry ...

2-2

 

(Direct, Continuous Copying

 

C.

Inputs to DC Controller .........

2-4

 

(2 sheets)) .............................

2-9

CHAPTER 3 EXPOSURE SYSTEM

I. BASIC OPERATION ...................

3-1

D. Scanner Movement for

 

A. Changing the Reproduction

 

Two-Page Separation Mode

 

Ratio ......................................

3-1

(copy count "2") .....................

3-7

II. LENS DRIVE SYSTEM ................

3-2

IV.

No. 4/5 MIRROR DRIVE

 

A.

Outline ...................................

3-2

 

SYSTEM ......................................

3-8

B. Basic Lens Drive System

 

V.

DISASSEMBLY AND

 

 

Operation (change of

 

 

ASSEMBLY ...............................

3-11

 

reproduction ratio) .................

3-3

 

A.

Lens Drive Assembly .........

3-11

III. SCANNER DRIVE SYSTEM .......

3-4

 

B.

Scanner Drive Assembly ....

3-14

A.

Outline ...................................

3-4

 

C.

Exposure Assembly ...........

3-17

B.

Relation Between Scanner

 

 

D.

Blank Assembly ..................

3-19

 

Sensor and Signals ...............

3-5

 

E.

No. 4/5 Mirror Mount...........

3-20

C.

Basic Scanner Operation ......

3-6

 

 

 

 

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

iii

CHAPTER 4 IMAGE FORMATION SYSTEM

I.

PROCESSES ...............................

4-1

B.

Operation ..............................

4-9

 

A.

Outline ...................................

4-1

V. DOCUMENT DENSITY

 

 

B. Basic Operation of Image

 

MEASUREMENT SYSTEM ......

4-11

 

 

Formation System

 

A.

Outline ................................

4-11

 

 

(black developing assembly,

 

B.

Operation ...........................

4-11

 

 

2 copies) ................................

4-2

C. Reading the Output of the AE

II.

CONTROLLING THE SCANNING

 

Sensor ................................

4-12

 

LAMP ...........................................

4-3

D.

Adjustment .........................

4-13

 

A.

Outline ...................................

4-3

VI. DEVELOPING ASSEMBLY/

 

 

B.

Mechanism ............................

4-4

DRUM CLAENER .....................

4-14

III. PRIMARY/TRANSFER

 

A.

Outlines ..............................

4-14

 

CORONA CURRENT AND GRID

 

B.

Remaining Toner Sensor ....

4-14

 

BIAS VOLTAGE CONTROL

 

C.

Torque Limiter.....................

4-15

 

SYSTEM ......................................

4-5

VII. BLANKING ................................

4-16

 

A.

Outline ...................................

4-5

A.

Outline ................................

4-16

 

B.

Switching Primary/Transfer

 

B. Movement of the Blank

 

 

 

Corona Current ON/OFF .......

4-5

 

Exposure Mechanism ........

4-17

 

C.

Maintaining Primary/Transfer

 

VIII.DISASSEMBLY AND

 

 

 

Corona Current Constant ......

4-6

ASSEMBLY ...............................

4-19

 

D.

Controlling Grid Bias

 

A.

Main Motor Assembly.........

4-19

 

 

Voltage ..................................

4-7

B.

Corona System ..................

4-20

IV. CONTROLLING DEVELOPING

 

C.

Primary/Transfer Corona

 

 

BIAS .............................................

4-8

 

Assembly ............................

4-22

 

A.

Outline ...................................

4-8

D.

Development System .........

4-25

CHAPTER 5 PICK-UP/FEEDING SYSTEM

I. PAPER PICK-UP ASSEMBLY AND

A.

Pick-up Assembly Delay

 

FEEDER.......................................

5-1

 

Jam ........................................

5-8

A.

Outline ...................................

5-1

B.

Delivery Assembly Stationary

B.

Pick-up and Feeder

 

 

Jam ........................................

5-9

 

Operation ..............................

5-3

C.

Delivery Assembly Delay

 

C. Identifying the Paper Size .....

5-4

 

Jam .....................................

5-10

D.

Pick-Up from the

 

III. FEEDER SYSTEM....................

5-11

 

Multifeeder.............................

5-5

A.

Pick-up Assembly ...............

5-11

II. JAM DETECTION ........................

5-7

B.

Feeder Assembly ...............

5-17

i v

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

CHAPTER 6 FIXING SYSTEM

I. BASIC OPERATIONS ..................

6-1

III. DISASSEMBLY AND

 

A.

Outline ...................................

6-1

ASSEMBLY ..................................

6-4

B.

Operation of Fixing Assembly

 

A. Fixing Assembly ....................

6-4

 

Temperature Control

 

 

 

 

System ..................................

6-3

 

 

CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS

I.

POWER SUPPLY .........................

7-1

A.

External Covers .....................

7-4

 

A. AC Driver DC Power

 

B.

Control Panel.........................

7-7

 

Supply ...................................

7-1

C.

Copyboard Cover ..................

7-9

II.

DISASSEMBLY AND

 

D.

Fans.......................................

7-9

 

ASSEMBLY ..................................

7-3

E.

PCBs ..................................

7-11

CHAPTER 8 INSTALLATION

I. LOCATION ...................................

8-1

II.UNPACKING AND INSTALLING

THE COPIER ...............................

8-2

A.

Unpacking .............................

8-2

B.

Mounting the Drum ...............

8-4

C.

Checking the Operation ........

8-5

D.

Adding Toner .........................

8-6

E.

Checking the Image ..............

8-7

F.

Universal Cassette Code

 

 

Setting "123" .........................

8-8

III. RELOCATING THE COPIER .......

8-9

IV. INSTALLING THE CONTROL

 

CARD-V ....................................

8-10

CHAPTER 9 MAINTENANCE AND SERVICING

I.

PERIODICALLY REPLACED

 

III. BASIC PROCEDURE FOR

 

 

PARTS ..........................................

9-1

PERIODIC SERVICING ...............

9-3

II.

DURABLE PARTS........................

9-2

IV. PERIODIC SERVICING

 

 

 

 

SCHEDULE .................................

9-4

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

v

CHAPTER 10 TROUBLESHOOTING

I.

MAINTENANCE AND

 

V. TROUBLESHOOTING FEEDING

 

INSPECTION ............................

10-1

PROBLEMS ............................

10-56

 

A.

Basic Image Adjustment

 

A.

Paper Jams ......................

10-56

 

 

Procedure ...........................

10-1

VI. INCORRECT PAPER FEED

 

 

B. Points to Check for Periodic

OPERATION ...........................

10-60

 

 

Maintenance.......................

10-2

VII. FUNCTION AND ARRANGEMENT

II.

STANDARDS AND

 

OF THE ELECTRICAL

 

 

ADJUSTMENT ..........................

10-3

PARTS .....................................

10-62

 

A.

Mechanical .........................

10-3

A.

Sensors, Fuses and

 

 

B.

Electrical ...........................

10-17

 

Lamps...............................

10-62

III.

IMAGE

 

B.

Clutches, Solenoids, Fans,

 

 

TROUBLESHOOTING ............

10-21

 

Motors and Heaters .........

10-63

 

A.

Initial Check ......................

10-21

C.

Switches, Circuit Breakers,

 

 

B.

Samples of Image

 

 

Counters, Etc. ..................

10-64

 

 

Faults ................................

10-24

D.

PCBs ................................

10-65

 

C.

Troubleshooting of Image

 

VIII.SERVICE MODE .....................

10-66

 

 

Faults ................................

10-25

A.

Outline ..............................

10-66

IV. OPERATION

 

B. Using the Service Mode ...

10-66

 

TROUBLESHOOTING ............

10-37

C. Guide to Service Mode ....

10-67

 

A.

Troubleshooting of

 

IX. SELF DIAGNOSIS ..................

10-69

 

 

Malfunction .......................

10-37

 

 

 

APPENDIX

A.

GENERAL TIMING CHART ........

A-1

C. GENERAL CURCUIT

 

B.

LIST OF SIGNALS/

 

DIAGRAM ...................................

A-5

 

ABBREVIATIONS .......................

A-3

D. SOLVENTS AND OILS LIST.......

A-7

v i

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

CHAPTER 1

GENERAL DESCRIPTION

I.

FEATURES ..................................

1-1

 

B.

Cross Section .......................

1-6

II.

SPECIFICATIONS .......................

1-2

IV.

OPERATION ................................

1-8

 

A.

Type .......................................

1-2

 

A.

Control Panel.........................

1-8

 

B.

System ..................................

1-2

 

B.

Daily Inspection to Be

 

 

C.

Performance ..........................

1-2

 

 

Performed by the User .......

1-10

 

D.

Others....................................

1-3

V.

IMAGE FORMATION ................

1-11

III. NAMES OF PARTS ......................

1-5

 

A.

Outline ................................

1-11

 

A.

External View ........................

1-5

 

 

 

 

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

CHAPTER 1 GENERAL DESCRIPTION

I. FEATURES

1.Copies as large as A3 in size (DIRECT) may be made, and the copyboard is of a fixed type.

Although compact in design, the copier enables making copies as large as A3 in size in the DIRECT mode.

The copyboard is of a fixed type so that pages of a book may be copied with much ease.

2.Zooming between 50% and 200%.

Copies may be made in reproduction rations of between 50% and 200%, selectable in 1% increments.

3.Front loading for faster supply of paper.

Paper is loaded from the front of the copier so that the cassette* may be replenished with paper without wasting time. The design also saves space.

* Universal and its capacity is 500 sheets.

4.Single-component fine particle toner for high resolution.

Images are developed using the single component toner projection method. Further, the copier uses toner of extremely fine particles for enhanced image quality.

5.Multifeeder (stack bypass) pick-up.

As many as 50 copies (80 g/m 2) may be made continuously using the multifeeding mechanism.

6.Low warm-up time

The copier warms up in than 25 sec.

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

1-1

CHAPTER 1 GENERAL DESCRIPTION

II.

SPECIFICATIONS

 

A.

Type

 

 

 

 

 

Body

 

Desktop

Copyboard

 

Fixed

Light sourse

 

Halogen lamp

Lens

 

 

 

Single lens + mirror movement

Photosensitive medium

OPC

B.

System

 

 

 

 

 

Reproduction

 

Indirect electrostatic method

Charging

 

Corona

Exposure

 

Slit (moving light source)

Copy density adjustment

Auto or manual

Development

 

Dry

Pick-up

 

Automatic

Exclusive cassette

 

 

 

Manual

Multifeeder

Transfer

 

Corona

Separation

 

Curvature and Static eliminator

Drum cleaning

 

Blade

Fixing

 

Heat roller (900W)

C.Performance

Type of document

 

Sheet, Book, 3-D object (2 kg)

Document size

 

A3 max.

Wait time

 

25 sec (approx.; at 20°C)

First copy

 

9.4 sec (A4, AE ON/OFF, 1:1)

Continuous copying

99 copies

Type of copy

 

Cassette

A3 (max.), A6 (min.;148x105 mm)

paper

 

Multifeed tray

Plain paper (64 to 80 g/m2), Tracing paper, Colored paper

 

 

 

Plain paper (64 to 128 g/m2), Tracing paper*, Colored paper,

 

 

 

OHP film*, Label sheet

* Use of tracing paper may cause double feeding. If thin paper or OHP film, feed one sheet at a time.

1-2

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

 

 

CHAPTER 1 GENERAL DESCRIPTION

 

 

 

Two-sided

Multifeed tray

Plain paper (64 to 128 g/m2), Colored paper

copying

 

 

 

 

 

Overlay

Multifeed tray

Plain paper (64 to 128 g/m2), Colored paper

copying

 

 

 

 

 

Cassette

Claw

Provided

 

Standard

60 mm deep (about 500 sheets of 80 g/m2 paper)

 

Universal

Yes

Copy tray

 

100 sheets (approx.; A4, 80 g/m2)

Non-image

Leading edge

2.0 ±1.5 mm or less

width (1st side)

Left/Right

2.5 ±1.5 mm or less

Auto clear

 

Provided (2 min, standard)

Auto shutoff

 

Yes

Option

 

ADF-A1, MS-A1, Stapler Sorter D3, CC-V

D.Others

Power supply

 

Serial Numbers

 

 

230V 50Hz

UFW xxxxx

 

 

230V 50Hz

QFE xxxxx

 

Power

Maximum

1.5kW or less

 

consumption

 

 

 

 

 

 

 

Noise

Copying

55 dB or less

(sound power level as prescribed by ISO)

 

Standby

40 dB or less

0.05ppm or less (UL standards)

Ozone

 

0.05 ppm or less (UL standards)

Dimensions

Width

610 mm

 

 

Depth

617 mm

 

 

Height

416 mm

 

Weight

 

50 kg or less

 

Operating

Temperature

15.0° to 30°C

 

environment

Humidity

5% to 80%

 

 

Atmospheric

0.6m to 1

 

 

pressure

 

 

 

 

 

Others

 

Keep copy paper wrapped to protect against moisture.

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

1-3

CHAPTER 1 GENERAL DESCRIPTION

Reproduction mode

Paper size

Cassette

Copies/min

DIRECT

 

A3 (297x420mm)

A3

9

 

 

A4 (210x297mm)

A4

17

 

 

B4 (257x365mm)

B4

10

 

 

B5 (182x257mm)

B5

17

 

 

A5R (210x149mm)

A5R

16

REDUCE

I

50%

 

 

 

II

A3 → A4

A4R

10

ENLARGE

I

A4 → A3

A3

9

 

II

200%

 

 

1-4

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

Canon NP6317 Service Manual

CHAPTER 1 GENERAL DESCRIPTION

III. NAMES OF PARTS

A.External View

[1]

[2]

[3]

[6]

[5]

[4]

Figure 1-301

[2] [3]

[4]

[1]

 

[5]

[12]

[6]

[11]

[10]

[8]

[9]

[7]

Figure 1-302

[1]Copy tray

[2]Copyboard cover

[3]Control panel

[4]Cassette

[5]Front cover

[6]Delivery cover

[1]Copyboard glass

[2]Power indicator

[3]Power switch

[4]Right cover

[5]Multifeeder tray

[6]Developing assembly release lever

[7]Developing assembly

[8]Transfer/separation assembly

[9]Primary corona assembly cleaner

[10]Feeder assembly release lever

[11]Copy density knob

[12]Fixing assembly knob

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

1-5

CHAPTER 1 GENERAL DESCRIPTION

B.Cross Section

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

[12]

[13]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[24]

 

[23]

[22]

[21]

[20]

[19]

[18]

[17]

[16]

[15]

[14]

[1]

No. 3 mirror

 

[10] No. 6 mirror

 

 

 

 

[19] Photosensitive drum

[2]

No. 2 mirror

 

[11] No. 5 mirror

 

 

 

 

[20] Cassette

 

 

[3]

No. 1 mirror

 

[12] No. 4 mirror

 

 

 

 

[21] Feeder assembly

[4]

Scanning lamp

 

[13] Multifeeder tray

 

[22] Exhaust fan

 

[5] Copyboard glass

 

[14] Developing assembly

[23] Fixing assembly

[6]

Copyboard cover

 

[15] Feeder roller 1

 

[24] Delivery roller

 

[7]

Lens

 

 

 

 

 

[16]

Pick-up roller

 

 

 

 

[8]

Pre-exposure lamp

 

[17]

Registration roller

 

 

 

 

[9]

Primary corona

 

[18] Transfer corona

 

 

 

 

 

assembly

 

 

 

 

 

 

 

assembly

 

 

 

 

 

 

 

Figure 1-303

1-6

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

CHAPTER 1 GENERAL DESCRIPTION

Blank Page

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

1-7

CHAPTER 1 GENERAL DESCRIPTION

IV. OPERATION

A.Control Panel

[1]

 

 

[2]

 

 

 

 

[3] [4][5] [6]

 

[7]

[8]

[9]

[10]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[22] [21] [20] [17] [16] [15] [14] [13] [12] [11] [19]

[18]

Figure 1-401

1-8

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

 

 

CHAPTER 1 GENERAL DESCRIPTION

 

 

 

No.

Name

Description

[1]

Sort/Group key

Press to select or cancel the Sort or Group mode.

 

 

* To use the Sort or Group mode, your copier must be

 

 

equipped with the optional Sorter or Stapler Sorter.

 

 

 

[2]

Two-Page Separation key

Press to select or cancel the Two-Page Separation mode.

[3]

Paper Jam indicator

Flashes when a paper jam occurs.

[4]

Control Card Check indicator

Flashes when the Control Card is not fully inserted.

[5]

Paper Out indicator

Flashes when there is no paper in the selected paper sup-

 

 

ply (paper cassette or stack bypass).

 

 

 

[6]

Toner Out indicator

Flashes when toner needs to be added.

[7]

Copy quantity/Copy ratio display

Displays the number of copies to be made, and the se-

 

 

lected enlargement/reduction ratio.

 

 

Also, when the copier is not functioning properly, the Ser-

 

 

vice Call message will appear here.

 

 

 

[8]

Reset key

Press to return the copier to the Standard mode.

[9]

Start key

Press to begin copying.

[10]

Stop key

Press to stop the copier before copying is complete.

[11]

Clear key

Press to change the number of copies to be made to one.

[12]

Number keys

Press to input the number of copies to be made.

[13]

Percent key

Press to display the selected enlargement/reduction ratio.

[14]

Zoom keys

Press to reduce or enlarge copy images by any ratio from

 

 

50% to 200%, selectable in 1% increments.

 

 

 

[15]

Autom. Zoom key

Press to select or cancel Automatic Zoom.

 

 

* To use Automatic Zoom, your copier must be equipped

 

 

with the optional Automatic Document Feeder (ADF).

 

 

When copying using the stack bypass or a universal cas-

 

 

sette, you cannot use Automatic Zoom.

 

 

 

[16]

Paper Select key

Press to select the paper supply (paper cassette or stack

 

 

bypass).

 

 

 

[17]

Paper Supply/Jam Location indica-

Lights to show the selected paper supply (paper cassette

 

tor

or stack bypass).

 

 

If a paper jam occurs, flashes to show jam location.

 

 

* This indicator will also flash to inform the user of vari-

 

 

ous errors.

 

 

 

[18]

Enlarge key

Press to enlarge copy images using a fixed enlargement

 

 

ratio.

 

 

 

[19]

1:1 (Direct) Copy key

Press to make copies the same size as the original.

[20]

Reduce key

Press to reduce copy images using a fixed reduction ratio.

[21]

AE (Automatic Exposure) key

Press to select or cancel Automatic Exposure Control.

[22]

Exposure lever

Use to manually adjust the lightness/darkness of copies.

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

1-9

CHAPTER 1 GENERAL DESCRIPTION

B.Daily Inspection to Be Performed by the User

Carefully instruct the user to be sure to clean the following parts of the copier once a week.

1.Primary Corona Assembly

Slide in and out the wire cleaner to clean the corona wires.

2.Copyboard Glass

Clean the copyboard glass with a moist cloth; then, wipe it dry.

3.Copyboard Cover

Clean the copyboard cover with a mild detergent solution; then, wipe it dry.

4.Transfer Corona Assembly

Remove the transfer corona assembly from the copier; then, slide the knob (wire cleaner) at the bottom of the transfer corona assembly back and forth to clean the corona wires.

Further, clean the static eliminator using the cleaning brush (accessory).

1-10

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

CHAPTER 1 GENERAL DESCRIPTION

V. IMAGE FORMATION

A.Outline

Copyboard glass

 

 

 

 

 

 

 

Scanning lamp

 

 

 

 

 

 

 

Lens

 

 

 

 

 

 

 

Primary corona assembly

 

Developing

 

 

 

 

assembly

 

 

 

Pre-exposure lamp

 

 

 

 

 

Cleaning roller

Drum cleaner

 

 

 

Picture to

be changed

 

+

 

 

+

 

(1 register

station only)

+

 

+

 

 

 

+

 

+

+

 

Upper fixing roller

 

 

+

 

 

 

 

 

 

+

+

 

+

 

 

 

 

 

+

Transfer

corona

assembly

 

 

+

 

 

Static

charge

 

+

 

 

 

 

 

 

 

eliminator

 

 

+

 

 

 

 

 

 

 

 

Upper

fixing roller

 

 

 

 

 

Figure 1-501

This copier consists of the units shown in Figure 1-501.

The image forming process is divided into the eight steps shown below. Step 1: Pre-exposure

Step 2: Primary corona (negative DC) Step 3: Image exposure

Step 4: Developing (positive plus AC) Step 5: Transfer (negative DC)

Step 6: Separation Step 7: Fixing

Step 8: Drum cleaning

 

Electrostatic latent image formation block

 

 

2. Primary corona

3. Image exposure

 

1. Pre-exposure

4. Developing

8. Drum

cleaning

 

 

 

 

5. Transfer

Multifeeder

Copy delivery

6. Separation

Registration

 

7. Fixing

Cassette

 

 

 

Flow of

copy paper

 

 

Direction

of rotation of drum

Figure 1-502

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

1-11

CHAPTER 2

BASIC OPERATION

In outline diagrams, represents mechanical drive paths, and indicates electrical signal paths.

Signals in digital circuits are identified as ‘1’ for High and ‘0’ for Low. The voltage of signals, however, depends on the circuit.

Nearly all operations of the product are controlled by a microprocessor; the internal workings of the processor are not relevant to the serviceman’s work and, therefore, are left out of the discussions. By the same token, no repairs are prescribed for the PCBs at the user’s premises; for this reason, PCBs are discussed by means of block diagrams rather than circuit diagrams.

For the purpose of explanation, discussions are divided into the following: from sensors to DC controller PCB input ports; from DC controller output ports to loads; and minor control circuits and functions.

I. BASIC OPERATION ....................

2-1

D.

DC Controller Outputs ...........

2-6

A.

Functions ...............................

2-1

E.

Basic Sequence of Operations

B. Outline of Electric Circuitry ...

2-2

 

(Direct, Continuous Copying

 

C.

Inputs to DC Controller .........

2-4

 

(2 sheets)) .............................

2-9

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

CHAPTER 2 BASIC OPERATION

I. BASIC OPERATION

A.Functions

The copier can be divided into four functional sections: paper pick-up and feed system, exposure system, image formation system, and control system.

Control

system

Control

panel

Control

 

circuit

Exposure system

 

Copybord

 

Scanner

 

Optical

 

system

tormation

Image

system

 

Pnimary corona

 

Cleaning unit

Photosensi-

 

 

Developing

tive drum

 

 

assembly

 

 

 

 

 

 

 

 

 

 

 

Transfer and

 

Multifeeder

 

 

 

 

separation

 

 

 

 

 

 

 

 

 

 

 

assembly

Pick-up

assembly

Paper

delivery

 

 

Feeder

control

 

 

 

 

 

 

 

 

assembly

 

tray

Copy

delivery

 

 

 

 

 

 

 

 

Fixing

assembly

 

 

 

assembly

 

 

Cassette

Paper pick-up and feed system

Figure 2-101

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

2-1

CHAPTER 2 BASIC OPERATION

B.Outline of Electric Circuitry

The NP-6317's main mechanisms are controlled by the microprocessor, PROM, and EEPROM on the DC controller PCB.

1.Microprocessor (Q300)

controls the copying sequence

controls the control panel

controls the main motor/scanner motor/mirror motor

controls the scanning lamp/fuser lamp

reads the analog signals

2.PROM (Q301)

contains the sequence program

3.EEPROM (Q317)

stores data that can be modified in the service mode (replaces conventional variable resistors and switches)

Note:

EEPROM is a type of ROM in which data may be erased or stored newly.

For this reason, the NP-6317's RAM and RAM are not backed up by a lithium battery.

Note:

The NP-6317 is equipped with an A/D converter and, therefore, its microprocessor can read analog signals.

Note:

The main motor (M1) is a brushless motor.

The scanner motor (M2) and mirror motor (M3) are stepping motors which use the oscillation frequency of the crystal oscillator on the DC controller.

2-2

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

CHAPTER 2 BASIC OPERATION

<Sensors>

Scanner home position sensor Lens home position sendor Cassette paper sensor Delivery paper sensor Pre-registration paper sensor Multifeeder paper densor Mirror home position sensor

Cassette size sensor

Right door switch

AE sensor

Black toner level sensor

Conntrol panel

Thermistors

Sensors, Switches

Sensors, Switches

<Control panel>

DC controller PCB

Microprocenssor (Q300)

PROM (Q301)

EEPROM (Q317)

Driver (Q324)

Microprocessor

Sorter controller PCB

Microprocessor

ADF controller PCB

Figure 2-102

<Loads>

 

 

 

 

Main motor

 

 

 

 

 

 

 

 

 

 

AC driver/DC

 

 

 

Fixing roller heater

power supply

PCB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HVT

Registration roller clutch

Lens solenoid

Pick-up clutch solenoid

Blank solenoid

Multifeeder solenoid

Primary/Transfer corona assembly

Developing bias

GND bias

Lamp regulator

 

 

Scanning lamp

 

 

 

 

 

 

Scanner motor

Mirror motor

Pre-exposure lamp

Exhaust fan

Scanner cooling fan

Sorter

ADF

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

2-3

CHAPTER 2 BASIC OPERATION

C.Inputs to DC Controller

1.Inputs to DC Controller (1/2)

Q1

Multifeeder paper sensor

Q2

Pre-registration paper sensor

Q3

Right door sensor

Q4

Mirror home position sensor

Q5

Scanner home position sensor

Q6

Lens home position sensor

Q7

Cassette paper sensor

Q8

Delivery paper sensor

 

 

 

 

DC controller PCB

 

 

J24-1

J311-5

5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-2

-4

 

when

paper is over

Q1, "1"

 

MFPD

(light-blocking

plate

is

at

Q1)

 

 

 

 

-3

-3

 

 

 

 

 

 

 

 

J23-1

J304-9

5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-2

-8

 

when

paper is at Q2, "1"

 

 

PRP

(light-blocking

plate

is

at

Q2)

 

 

 

 

-3

-7

 

 

 

 

 

 

 

 

J27-1

J311-8

5V

 

 

 

 

 

 

 

 

when

night door is

closed, "1"

 

-2

-7

 

 

RDC

(light-blocking

plate

is

at

Q3)

 

 

 

 

-3

-6

 

 

 

 

 

 

 

 

J801-1

J312-3

5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-2

-2

 

when

mirror motor

is

at

home

position, "1"

MHP

(light-blocking

plate

is

at

Q4)

 

 

 

 

-3

-1

 

 

 

 

 

 

 

 

J35-1

J312-6

5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-2

-5

 

when

scanner

is at

home position, "1"

SCHP

(light-blocking

plate

is

at

Q5)

 

 

 

 

-3

-4

 

 

 

 

 

 

 

 

J33-1

J312-9

5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-2

-8

 

when

lens is at home

position, "1"

LHP

(light-blocking

plate

is

at

Q6)

 

 

 

 

-3

-7

 

 

 

 

 

 

 

 

J26-1

J303-7

5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-2

-6

 

when

paper is in cassette, "1"

 

CPEP

(light-blocking

plate

is

at

Q7)

 

 

 

 

-3

-5

 

 

 

 

 

 

 

 

J44-1

J314-5

5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-3

-3

 

when

paper is at Q8, "0"

 

 

DLP

(light-blocking

plate

is

not at Q8)

 

 

-2

-4

 

 

 

 

 

 

 

 

 

Figure 2-103

 

 

 

 

 

 

 

2-4

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

CHAPTER 2 BASIC OPERATION

2.Inputs to DC Controller (2/2)

AE sensor

Black toner leveol sensor

Thermistor 2 (auxiliary)

Thermistor 1 (main)

Cassette size sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DC controller PCB

 

 

 

 

 

 

AE

 

 

 

 

 

 

24V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J701-4

J312-13

 

 

 

 

 

 

 

 

 

 

 

 

 

24V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-2

-11

AE

 

 

 

 

 

 

 

 

 

 

 

 

-

 

 

 

 

 

 

 

See p. 3-25

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

-1

-10

AEGIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-3

-12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TS1

 

 

 

J39-3

J303-3

 

5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-2

-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BTEP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-1

-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J45-1

J317-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TH2

 

 

 

 

 

 

TH2 (NTC2)

 

 

 

 

 

 

 

 

 

 

 

 

 

-2

-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TH1(NTC1)

 

 

 

 

 

 

 

 

 

The voltage lowers as the fixing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-4

J317-4

TH1

heater

temperature

rises.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-3

-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CST(SW3)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J28-3

J313-2

CSZ1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-4

-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CSZ2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-5

-4

CSZ3

Reads

the cassette

size; see p. 3-32.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-6

-5

CSZ4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-2

-1

oscillation

signal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2-104

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

2-5

CHAPTER 2 BASIC OPERATION

D.DC Controller Outputs

1.DC Controller Out Puts (1/3)

Noise

filter DS1

SW1

Control panel PCB

24V

J509-1

J509-2

J503-1

DC controller PCB

 

 

Power supply

 

 

 

 

 

 

 

 

 

 

assembly

J316-11

PWOFF

when "0"

AC power OFF (main

 

 

 

 

 

 

 

24V

 

 

 

 

 

 

 

 

 

 

 

switch).

 

 

 

K100

 

 

 

 

 

 

 

 

 

 

 

J318-3

HTPT

 

when "0"

AC power OFF (power

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

supply unit).

Fixing roller heater

 

Fixing heater

 

-2

HTCK

 

when "0"

fixing roller heater ON.

 

ON detection

 

 

J4-1

 

 

 

 

 

circuit

 

 

 

 

 

 

 

LA1

 

 

Fixing

 

 

 

 

 

 

 

 

-2

 

 

-1

 

 

 

 

 

 

heater drive

 

HTRD

 

when "1"

fixing roller heater ON.

F1

 

 

 

 

 

 

circuit

 

 

 

 

 

 

 

Thermoswitch 1

 

 

 

 

 

 

 

 

 

 

 

J201-1

 

J203

J305

24V

 

 

 

 

 

 

-1

-6

 

 

 

 

 

Scanning lamp

F2

-2

 

-4

-3

LAMP-CHECK

 

 

 

 

-5

-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J202-3

Lamp driver unit

ZERO-CROSS

See p. 3-20.

LA2

Thermoswitch 2

-1

-3

-4

 

 

 

 

 

 

LIGHT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-2

-5

 

 

 

 

 

 

 

 

 

-6

-1

LAMP-SHIFT

 

 

Scanner motor

M2

 

 

 

 

See

p. 3-9.

 

 

Mirror motor

M3

 

 

 

 

See

p. 3-9.

 

 

 

J351-1

 

 

 

J301-1

MMLOCK

when "0"

main motor is moving.

 

-2

 

 

 

-2

MMD

 

when "1"

main motor ON.

Main motor

M1

 

 

 

 

 

 

 

 

 

-3

 

 

 

-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-4

 

 

 

-4

+24V

 

 

 

 

 

 

 

Figure 2-105

 

 

 

 

 

2-6

COPYRIGHT © 1999 CANON INC.

CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

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