Canon Np6045 User manual

SERVICE

MANUAL

REVISION 1

FY8-13EL-010

MAR. 1997

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.

Printed in Japan

Imprimé au Japon

Use of this manual should be

strictly supervised to avoid

disclosure of confidential

information.

Prepared by

OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPT. 1

OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIV.

CANON INC.

30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo 146 Japan

This Service Manual provides basic facts and figures needed to service the plain

paper copier NP6045 in the field. The NP6045 is designed to enable automated copying

work and may be configured with the following system components:

1. Stapler Sorter-E2, Stapler Sorter-G1, Sorter-E1, Sorter-G1

2. RDF-H1

For descriptions on the system components, see their respective service manuals.

This Service Manual covers the copier only, and 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 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 and 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

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 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 problem identification (image

fault/malfunction).

Appendix contains a general timing chart and general circuit diagrams.

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 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 reasons, 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.

System Configuration

iii

Stapler Sorter-G1

In addition to the functions of a 20-bin sorter,

automatically staples sorted copies.

Sorter-G1

Is a 20-bin sorter capable of automatic

sorting and grouping.

Sorter-E1

Is a 20-bin sorter capable of automatic sorting and grouping.

Stapler Sorter-E2

In addition to the functions of a 20-bin sorter, automatically staples sorted copies.

Further, it swings out copies to the front for removal, and is equipped with a multiple

stacking function, in which two or more sets of copies may be delivered to a single bin.

RDF-H1

Feeds originals one by one from a stack

to the copyboard for copying.

NP6045

blank page

CONTENTS

CHAPTER 1 GENERAL DESCRIPTION

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

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

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

2. System .....................................1-2

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

4. Others.......................................1-6

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

A. External View.................................1-9

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

1. Cross Section of the Body .......1-11

IV. OPERATIONS ....................................1-12

A. Control Panel.................................1-12

B. Special Features Mode .................1-13

C. User Mode.....................................1-14

1. Types of User Modes...............1-14

V. ROUTINE WORK BY THE USER......1-18

VI. IMAGE FORMATION..........................1-19

A. Outline...........................................1-19

CHAPTER 2 BASIC OPERATION

I. BASIC OPERATIONS ........................2-1

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

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

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

1. Basic Sequence of Operations

at Power-On (1/2).....................2-4

2. Basic Sequence of Operations

at Power-On (2/2).....................2-5

3. Basic Sequence of Operations

during Copying.........................2-7

4. Basic Sequence of Operations

for Page Separation .................2-9

D. Main Motor (M1) Control Circuit....2-11

1. Outline......................................2-11

2. Operations................................2-11

3. Detecting an Error....................2-12

E. Inputs to the DC Controller............2-13

F. Outputs from the DC Controller.....2-21

G. Inputs to and Outputs from the

Options..........................................2-33

CHAPTER 3 EXPOSURE SYSTEM

I. BASIC OPERATIONS ........................3-1

A. Varying the Reproduction Ratio.....3-1

II. LENS DRIVE MECHANISM...............3-2

A. Moving the Lens............................3-2

1. Outline......................................3-2

2. Moving the Lens.......................3-3

3. Controlling the Lens Motors.....3-3

4. Moving the Lens.......................3-4

III. SCANNER DRIVE MECHANISM.......3-6

A. Driving the Scanner.......................3-6

1. Outline......................................3-6

2. Relationship between Scanner

Sensor and Signals..................3-7

3. Basic Sequence of Operations

for Scanner Movement.............3-8

4. Sequence of Operations for

Scanner Movement (page

separation) ...............................3-9

5. Scanner Motor (M3) Control

Circuit .......................................3-11

IV. OTHERS.............................................3-13

A. Detecting the Size of Originals......3-13

1. Outline......................................3-13

2. Operation..................................3-14

3. Sizes of Originals .....................3-15

V. DISASSEMBLY AND ASSEMBLY......3-17

A. Scanner Drive System...................3-17

1. Removing the Scanner Drive

Assembly Motor........................3-17

2. Outline of the Scanner Drive

Cable........................................3-19

3. Removing the Scanner Drive

Cable........................................3-20

4. Adjusting the Tension of the

Scanner Drive System .............3-22

5. Positioning the Mirror ...............3-23

I. PROCESSES .....................................4-1

A. Controlling the Surface Potential

of the Drum....................................4-1

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

2. Control Method.........................4-2

3. Potential Measurement Circuit.4-5

B. Controlling the Scanning Lamp

Intensity.........................................4-6

1. Outline......................................4-6

2. Operations................................4-6

3. Automatic Exposure Control

(AE) ..........................................4-7

4. Check Points............................4-9

C. Controlling the Primary/Transfer

Corona Current..............................4-10

1. Outline......................................4-10

2. Controlling the Primary

Corona Current.........................4-10

3. Controlling the Transfer

Corona Current.........................4-11

D. Controlling the Separation/Pre-

Transfer Corona Current ...............4-13

1. Outline......................................4-13

2. Turning ON and OFF the

Separation/ Pre-Transfer

Corona Current.........................4-15

3. Separation Corona Current

(DC component).......................4-15

4. Pre-Transfer Corona Current

(DC component).......................4-15

5. Controlling the DC Component

Overcurrent of the Separation/

Pre-Transfer Corona Current ...4-16

E. Controlling the Blank Exposure

Lamp (LEDs) .................................4-17

1. Outline......................................4-17

2. Controlling the Activation in

Reduce Mode...........................4-17

3. Controlling the Activation in

Direct Mode..............................4-17

4. Controlling the Activation in

Sheet Frame Erasing Mode.....4-17

5. Controlling the Activation in

Original Frame Erasing Mode..4-18

6. Controlling the Activation in

Book Frame Erasing Mode ......4-18

7. Controlling the Activation in

Hole Image Erasing Mode........4-19

8. Controlling the Activation of

AE Mode...................................4-19

F. Drum Heater Circuit.......................4-20

1. Outline......................................4-20

2. Idle Rotation of the

Photosensitive Drum and the

Developing Cylinder.................4-22

G. Cleaning the Primary Charging

Wire...............................................4-23

1. Outline......................................4-23

2. Operation of the Primary

Charging Wire Cleaning Wire...4-23

H. Cleaning the Pre-Transfer,

Transfer, and Separation

Charging Wires Automatically.......4-24

II. DEVELOPING ASSEMBLY AND

CLEANING ASSEMBLY.....................4-26

A. Outline...........................................4-26

B. Detecting the Toner Level and

Controlling the Supply Operation ..4-27

C. Controlling the Developing

Bias/Roller Electrode.....................4-29

1. Outline......................................4-29

2. Control Timing..........................4-29

3. Developing Bias Control

Circuit .......................................4-32

4. Roller Electrode Bias Control

Circuit .......................................4-33

D. Detecting the Locking of the

Waste Toner Feeding Screw .........4-35

III. DISASSEMBLY AND ASSEMBLY......4-36

A. Scanning Lamp .............................4-36

1. Removing the Scanning Lamp.4-36

2. Removing the Thermal Fuse....4-37

B. Standard White Plate Assembly....4-38

C. Pre-Exposure Lamp Unit...............4-40

1. Removing the Pre-Exposure

Lamp Unit.................................4-40

D. Blank Exposure Lamp Assembly ..4-41

CHAPTER 4 IMAGE FORMATION SYSTEM

6. Adjusting the Position of the

Scanner....................................3-24

B. Lens Drive Assembly.....................3-25

1. Removing the Lens Y Direction

Drive Motor...............................3-25

2. Removing the Lens Stage

Temporarily...............................3-27

3. Installing the Light-Blocking

Belt ...........................................3-28

4. Removing the Lens X Direction

Drive Motor...............................3-29

5. Attaching the Lens X Direction

Drive Belt..................................3-30

6. Attaching the Light-Blocking

Belt ...........................................3-30

7. When Replacing the Light-

Blocking Belt.............................3-31

vii

1. Removing the Blank Exposure

Lamp Assembly........................4-41

E. Photosensitive Drum .....................4-42

1. Removing the Drum Unit..........4-42

2. Replacing the Drum Heater......4-44

3. Installing the Photosensitive

Drum.........................................4-44

F. Potential Sensor Assembly ...........4-44

1. Removing the Potential

Sensor Assembly .....................4-44

G. Primary Charging Assembly..........4-45

1. Removing the Primary

Charging Assembly..................4-45

H. Pre-Transfer Charging Assembly..4-45

1. Removing the Pre-Transfer

Charging Assembly..................4-45

I. Transfer/Separation Charging

Assembly.......................................4-46

1. Removing the Transfer/

Separation Charging

Assembly..................................4-46

2. Installing the Transfer/

Separation Charging

Assembly..................................4-47

J. Charging Wire ...............................4-49

1. Outline......................................4-49

2. Removing the Primary

Charging Assembly Wire

Cleaner.....................................4-49

3. Installing the Charging Wire.....4-49

4. Routing the Grid for the

Primary Charging Assembly.....4-51

5. Adjusting the Height of the

Charging Wire ..........................4-53

6. Cleaning the Primary Charging

Assembly Anti-Stray Toner

Sheet........................................4-54

K. Developing Assembly....................4-55

1. Removing from the Developing

Assembly..................................4-55

2. Removing the Blade Unit .........4-56

3. Installing the Blade...................4-56

4. Removing the Developing

Cylinder and the Magnetic

Seal ..........................................4-57

5. Cleaning the Developing

Assembly Anti-Stray Toner

Sheet........................................4-59

L. Hopper Assembly..........................4-60

1. Removing the Hopper

Assembly..................................4-60

M. Drum Cleaner................................4-61

1. Construction .............................4-61

2. Removing the Cleaning Blade..4-61

3. Installing the Cleaning Blade....4-62

4. Installing the Side Seal.............4-63

5. Cleaning the Cleaning Side

Scraper.....................................4-63

N. Separation Claw/Separation

Claw Drive Assembly ....................4-65

1. Removing the Separation

Claw/Separation Drive

Assembly from the Drum Unit..4-65

O. Waste Toner Feeding Assembly....4-66

CHAPTER 5 PICK-UP/FEEDING SYSTEM

I. PICK-UP/FEEDING SYSTEM............5-1

A. Outline...........................................5-1

II. PICK-UP FROM THE CASSETTE.....5-3

A. Pick-Up Operation.........................5-3

1. Outline......................................5-4

2. Sequence of Pick-Up

Operations................................5-4

B. Cassette Lifter Operations.............5-5

C. Detecting the Size of Copy

Paper in the Cassette....................5-7

1. Outline......................................5-7

2. Detecting the Size of Paper .....5-7

3. Markings on the Width Guide

Rail ...........................................5-8

4. Paper Sizes..............................5-9

5. Registering Paper Width Basic

Value.........................................5-10

III.

PICK-UP FROM THE PAPER DECK

....5-11

A. Outline...........................................5-11

1. Pick-Up Operations..................5-12

2. Sequence of Pick-Up

Operations................................5-12

B. Lifter Operations............................5-13

1. Operations................................5-13

2. Deck Limit Detection ................5-14

C. Detecting Paper for the Deck........5-15

1. Detecting the Presence/

Absence of Paper.....................5-15

2. Detecting the Deck Size...........5-15

D. High-Speed Pick-Up......................5-15

IV. PICK-UP FROM THE

MULTIFEEDER...................................5-16

A. Pick-Up Operation.........................5-16

B. Detecting the Size of Paper in

the Multifeeder...............................5-17

C. Sequence of Operations

(multifeeder) ..................................5-18

V. CONTROLLING THE

REGISTRATION CLUTCH .................5-19

VI. MAKING TWO-SIDED/OVERLAY

COPIES (1st SIDE) ............................5-20

viii

A. Two-Sided/Overlay Copy

Operation.......................................5-20

1. Sequence of Operations for

Making Two-Sided/Overlay

Copies (1st side) ......................5-21

B. Making Two-Sided Copies

(2nd side) ......................................5-22

1. Sequence of Operations for

Making Two-Sided Copies

(2nd side) .................................5-23

C. Making Overlay Copies

(2nd side) ......................................5-24

1. Outline......................................5-24

2. Outline of Operations ...............5-25

3. Sequence of Operations for

Overlay Copies (2nd side)........5-27

D. Reversal Delivery ..........................5-28

1. Sequence of Reversal

Delivery Operations..................5-29

E. Switching Paper Sizes for Two-

Sided/Overlay/Reversal Delivery

Copies ...........................................5-30

1. Movement of the Paper Size

Guide........................................5-30

2. Movement of the Paper

Jogging Plate and the Rear

Guide Plate...............................5-31

3. Detecting Copy Paper..............5-32

F. Re-Pick Up from the Holding

Tray................................................5-33

G. Skipping.........................................5-34

1. Outline......................................5-34

2. Operation..................................5-34

3. Skip Mode (copying an even

number of originals) .................5-35

4. Skip Mode (copying an odd

number of originals) .................5-37

5. Reverse Delivery......................5-39

VII. DETECTING JAMS............................5-40

A. Outline...........................................5-40

1. Registration Roller Delay Jam..5-43

2. Registration Roller Stationary

Jam...........................................5-43

3. Pick-Up Vertical Path Feeding

0/1 Delay Jam ..........................5-44

4. Pick-Up Vertical Path Feeding

0/1 Stationary Jam ...................5-44

5. Pick-Up Vertical Path Feeding

2–4 Delay Jam .........................5-45

6. Pick-Up Vertical Path Feeding

2–4 Stationary Jam ..................5-45

7. Fixing Assembly Outlet Delay

Jam...........................................5-46

8. Fixing Assembly Outlet

Stationary Jam .........................5-46

9. External Delivery Delay Jam....5-47

10.External Delivery Stationary

Jam...........................................5-47

11.Internal Delivery Delay Jam.....5-48

12.Internal Delivery Paper

Stationary Jam .........................5-48

13.Holding Tray Inlet Delay Jam...5-49

14.Holding Tray Inlet Stationary

Jam...........................................5-49

15.Holding Tray Re-Pick Up Delay

Jam...........................................5-50

16.Holding Tray Registration

Delay Jam ................................5-50

17.Holding Tray Registration

Stationary Jam .........................5-51

18.Holding Tray Feeding 1/2

Delay Jam ................................5-51

19.Holding Tray Feeding 1/2

Stationary Jam .........................5-52

20.Fixing Assembly Separation

Claw Stationary Jam ................5-52

VIII. DISASSEMBLY AND ASSEMBLY......5-53

A. Multifeeder Assembly....................5-53

1. Removing the Multifeeder

Assembly..................................5-53

2. Removing the Pick-Up Roller...5-54

3. Installing the Pick-Up Roller.....5-54

4. Removing the Separation

Roller........................................5-55

5. Removing the Feeding Roller...5-57

6. Removing the Multifeeder

Paper Sensor ...........................5-58

7. Attaching the Side Guide

Timing Belt for the Multifeeder

Assembly..................................5-60

8. Installing the Feeding Roller of

the Multifeeder..........................5-60

9. Adjusting the Pick-Up/Feeding

Roller Pressure (multifeeder) ...5-61

10.Positioning the Pick-Up Roller

Releasing Solenoid

(multifeeder) .............................5-61

B. Paper Deck Assembly...................5-62

1. Removing the Paper Deck

Assembly from the Copier........5-62

2. Removing the Lifter Cable........5-63

3. Changing the Deck Paper

Size ..........................................5-68

4. Adjusting the Registration for

the Deck...................................5-70

C .Cassette/Paper Deck Pick-Up

Assembly.......................................5-71

1. Removing the Pick-Up

Assembly from the Copier........5-71

2. Removing the Pick-Up Roller...5-71

3. Removing the Feeding Roller...5-73

4. Removing the Separation

Roller........................................5-73

5. Adjusting the Separation

Roller Pressure.........................5-75

6. Orientation of the Separation

Roller........................................5-76

Table of contents

Other Canon Printer manuals

Canon

Canon PAPER DECK-C1 User manual

Canon

Canon PIXMA mini260 User manual

Canon

Canon PIXMA TS9550 Setup guide

Canon

Canon imageRUNNER 2545i Installation and operating instructions

Canon

Canon DIRECT PRINT CDI-E350-020 User manual

Canon

Canon PIXMA TR4720 Setup guide

Canon

Canon imageCLASS MF7470 Assembly instructions

Canon

Canon pixma ix6800 series Setup guide

Canon

Canon imagePROGRAF iPF815 User manual

Canon

Canon iP4600 - PIXMA Color Inkjet Printer User manual

Canon

Canon PIXMA MP499 User manual

Canon

Canon Pixma Pro9500 Series Manual

Canon

Canon Pixma MG3500 Series Setup guide

Canon

Canon PIXMA MP860 User manual

Canon

Canon LBP 2900i User manual

Canon

Canon PowerShot S500 Digital ELPH User manual

Canon

Canon PIXMA iX6850 Series User manual

Canon

Canon iP4200 - PIXMA Photo Printer User manual

Canon

Canon G1020 Series User manual

Canon

Canon PIXMA TS6200 Series User manual

Canon

Canon PIXMA IP8700 Series User manual

Canon

Canon BJC-S750 Manual

Canon

Canon imagePRESS C800 Series User manual

Canon

Canon iP4500 - PIXMA Color Inkjet Printer User manual

Popular Printer manuals by other brands

Evolis

Evolis Elypso user guide

Lexmark

Lexmark 522n - C Color Laser Printer Service manual

Panduit

Panduit COUGAR LS9Q Operator's manual

Olivetti

Olivetti PG L2140 Operation guide

Samsung

Samsung SL-M2820DW user manual

Kyocera

Kyocera FS-9530DN specification

Lexmark

Lexmark Infoprint 1332 user manual

Epson

Epson M1120 user guide

TransAct

TransAct POSJET 1500 Spare parts

Telpar

Telpar MTP-1500 user manual

Star

Star DP8340 SERIES user manual

MGI

MGI JETVARNISH 3DS user manual

Kyocera

Kyocera TASKalfa PA4500ci Operation guide

Emaar

Emaar EP-360 user manual

Fujitsu

Fujitsu DL7400 user manual

Centronics

Centronics 101A Technical manual

Logic Controls

Logic Controls LR1100 user manual

Epson

Epson ActionLaser Plus user manual

Canon NP6045 User manual

Popular Printer manuals by other brands