Canon NP6218 Service Manual

SERVICE MANUAL

REVISION 0

FY8-13EX-000

MAY 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 ACTU AL MA CHINE VALUES OR THOSE FOUND IN AD VER TISING AND O THER 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.

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

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 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.

INTRODUCTION

This Service Manual contains the bsic facts and figures about the plain paper copier NP6218, and is compiled to serve as a handy reference for servicing the machine in the field.

The NP6218 is designed to enable fully automated copying work and may be configured with the following accessories:

1. Cassette Feeding Module-B2*

2. Cassette Feeding Module-A2*

3. Control Card IV N

4. ADF-E1

5. Staple Sorter B2/D1

6. MS-B1

7. Remote Diagnostic Device II

This manual is limited to the descriptions of the NP6218, Cassette Feeding ModuleB2/Cassette Feeding Module-A2. * May not be available in some areas but discussed in this manual.

This Service Manual covers the copier only, and consists of the following chapters: Chapter 1

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.

In addition to the above chapters, this SERVICE MANUAL contains a set of

appendixes consisting of a general timing chart and general circuit diagrams.

A separate document entitled SERVICE HANDBOOK is also available for

troubleshooting problems in the copier.

The following rules apply throughout this volume:

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 pow er switch, closing the front door, and closing the delivery unit door, which will result 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 contents of this manual may be updated from time to time to reflect improv ements rendered to the copier; a Service Information bulletin will be issued as necessary to cover major changes.

All service persons are expected to be thoroughly familiar with the information contained in this manual, SERVICE HANDBOOK, and Service Information bulletins, for quick response to the user’s needs.

System Configuration

ADF-E1

Sends originals one by one from a stack set on its tray

Stapler Sorter B2/D1, MS-B1

Automatically sorts or (page collation) or groups up to 10 sets of copies; with the sorting function, the sorted copies may automatically be stapled. (Not applicable to MS-B1.)

Control Card IV N

Allows the user to control copy volume.

Cassette Feeding Module-A2

Adds additional two cassettes.

Cassette Feeding Module-B2

Adds an additional cassette.

The NP6218 may be configured with the following systems options:

iii

1. GENERAL DESCRIPTION

CHAPTER 1 GENERAL DESCRIPTION

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

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

A. Copier............................................1-2

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

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

3. Features ...................................1-3

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

B. Cassette Feeding Module-B2/

Cassette Feeding Module-A2 ........1-5

III. NAMES OF PARTS ............................1-6

A. Exterior View .................................1-6

B. Cross Section ................................1-7

1. Body .........................................1-7

2. Cassette Feeding Module-A2...1-8

IV. OPERATION.......................................1-9

A. Control Panel.................................1-9

B. Operation Mode.............................1-10

C. Making Two-Sided/Overlay

Copies (manual)............................1-11

D. User Mode.....................................1-12

1. Outline......................................1-12

2. Common Operations................1-13

3. Changing the Auto Clear

Time ( )..............................1-13

4. Changing the Auto Power-Off

Time ( )..............................1-13

5. Zoom Fine-Adjustment ( )..1-14

6. Tur ning On and Off the Auto Cassette Change Mechanism

( ).......................................1-15

7. Tur ning On/Off the Auto Sor t/ Non-Sort (with ADF and sor ter

installed—option) ( ) ..........1-16

8. Cleaning the Feeder (with ADF

installed—option) ( ) ..........1-16

9. Selecting the Density Adjustment Method for

Standard Mode ( ) .............1-17

10.Initializing User Mode ( )....1-17

11.Quick Guide to User Mode .......1-18

E. Handling the Toner Bottle ..............1-19

V. WARNINGS AND ACTIONS ..............1-19

VI. ROUTINE MAINTENANCE BY THE

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

VII. IMAGE FORMATION..........................1-20

A. Outline ...........................................1-20

CHAPTER 2 BASIC OPERATION

I. BASIC CONSTRUCTION ...................2-1

A. Functional Constr uction .................2-1

B. Outline of the Electr ical Circuitr y...2-2 C. Basic Sequence of Operations

(2 copies continuous, AE) .............2-3

D. Main Motor Control Circuit.............2-4

1. Outline......................................2-4

2. Mechanism...............................2-4

E. Inputs to the DC Controller PCB ...2-5

1. Inputs to the DC Controller

PCB (1/3)..................................2-5

2. Inputs to the DC Controller

PCB (2/3)..................................2-6

3. Inputs to the DC Controller

PCB (3/3)..................................2-7

F. Outputs from the DC Controller

PCB...............................................2-8

1. Outputs from the DC

Controller PCB (1/3).................2-8

2. Outputs from the DC

Controller PCB (2/3).................2-9

3. Outputs from the DC

Controller PCB (3/3).................2-10

G. Inputs to and Outputs from the

1-Cassette Unit Driver PCB...........2-11

1. Inputs to and Outputs from the 1-Cassette Unit Driver

PCB (1/1)..................................2-11

H. Inputs to and Outputs from the

2-Cassette Unit Driver PCB...........2-12

1. Inputs to and Outputs from the 2-Cassette Unit Driver

PCB (1/2)..................................2-12

2. Inputs to and Outputs from the 2-Cassette Unit Driver

PCB (2/2)..................................2-13

CHAPTER 3 EXPOSURE SYSTEM

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

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

II. LENS DRIVE SYSTEM ......................3-1

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

B. Lens Motor Dr ive Circuit ................3-3

1. Keeping the Lens Motor

Stationary .................................3-3

2. Driving the Lens Motor.............3-3

C. Basic Sequence of Operations

(lens drive system;non-Direct)......3-4

III. SCANNING DRIVE SYSTEM.............3-5

A. Dr iving the Scanner.......................3-5

1. Outline......................................3-5

2. Relationship between the

Scanner Sensor and Signals....3-6

3. Basic Sequence of

Operations (scanner)................3-6

4. Driving the Scanner Motor .......3-7

5. Scanner Operations in Page Separation Mode (non-AE, page separation, A4, 2 copies)..3-8

CHAPTER 4 IMAGE FORMATION SYSTEM

IV. DISASSEMBLY AND ASSEMBLY......3-9

A. Scanner Dr ive Assembly...............3-9

1. Detaching the Scanner Drive

Motor ........................................3-9

2. Detaching the Scanner Cable..3-10

3. Assembling the Mirror

Position Tool .............................3-12

4. Routing the Scanner Cable......3-13

5. Adjusting the Position of the Mirrors (optical length of No.

1, 2, and 3 mirrors)...................3-16

6. Cleaning the Scanner No.6

Mirror........................................3-17

B. Lens Dr ive Assembly.....................3-18

1. Detaching the Lens Drive

Motor ........................................3-18

2. Routing the Lens Cable............3-20

3. Adjusting the Position of the

Change Solenoid ......................3-21

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

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

B. Basic Sequence of Operations

(image formation system) ..............4-3

C. Controlling the Scanning Lamp.....4-4

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

2. Tur ning On and Off the

Scanning Lamp ........................4-5

3. Pre-Heating Control

(scanning lamp) ........................4-5

4. Sequence of Operations (scanning lamp pre-heating control;AE, A4, continuous,

2 copies) ...................................4-5

5. Controlling the Intensity of the

Scanning Lamp (FL1)...............4-7

6. Controlling the Fluorescent

Lamp Heater.............................4-8

7. Fluorescent Lamp Automatic ...4-9

8. Fluorescent Lamp Protection

Mechanism...............................4-9

D. Controlling the Primary Charging

Roller Bias.....................................4-10

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

2. Tur ning On and Off the Pr imar y

Charging Roller Bias ................4-11

3. Controlling the Primary Charging Roller Bias to a

Constant V oltage......................4-11

4. Switching the Primary Charging Roller Bias Application Voltage

Level.........................................4-11

5. Application V oltage Level (APVC) for the Primary Charging Roller and Scanning Lamp On Voltage Level

Automatic Correction ................4-12

E. Controlling the Transfer Roller Bias...4-13

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

2. Tur ning On and Off the

Transfer Roller Bias..................4-15

3. Controlling the Transfer Bias

to a Constant Voltage...............4-15

4. Controlling the Transfer Bias Voltage Level Correction

(ATVC control)..........................4-15

5. Current Limiter Circuit

(transfer bias)...........................4-15

6. Current Limiter Circuit

(cleaning bias)..........................4-15

F. Controlling the Static Eliminator

Bias................................................4-16

1. Outline......................................4-16

2. Switching the Static Eliminator

Bias V oltage Level....................4-17

3. Ensuring Proper Separation of

Thin Paper ................................4-17

G. Controlling Blank Exposure...........4-18

1. Outline......................................4-18

2. Blanking (Whiting) of Non-

Image Areas for Reduction.......4-19

3. Blanking (Whiting) Out the Leading/Trailing Edges and

between Copies........................4-19

H. Controlling the Primary Corona

Roller Cleaning Mechanism ..........4-20

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

2. Primary Charging Roller

Cleaning Operation ..................4-20

I. Releasing the Transfer Roller........4-21

1. Outline......................................4-21

II. DEVELOPING ASSEMBLY AND

CLEANING ASSEMBLY .....................4-22

A. Outline ...........................................4-22

B. Controlling the Toner Level

Detection .......................................4-23

C. Controlling the Development

Bias................................................4-25

1. Outline......................................4-25

2. Tur ning On and Off the DC Component of the Developing Bias and Controlling the

Voltage to a Constant Level.....4-25

3. Tur ning On and Off the AC Component of the

Development Bias....................4-26

4. Controlling the Voltage Level of the DC Component of the

Development Bias....................4-26

D. Automatic Control of Copy

Density...........................................4-27

1. Outline......................................4-27

2. Control Method .........................4-27

3. AE Adjustment..........................4-29

III. DISASSEMBLY AND ASSEMBLY......4-30

A. Illumination Assembly....................4-30

1. Detaching the Scanning Lamp/Fluorescent Lamp

Heater.......................................4-30

2. Points to Note When Attaching the Fluorescent Lamp

Heater/Scanning Lamp.............4-32

3. Detaching the Blank Exposure

Assembly..................................4-34

4. Detaching the Blank Exposure

Lamp ........................................4-35

5. Detaching the Blank Shutter

Solenoid ...................................4-36

6. Positioning the Blank Shutter

Solenoid ...................................4-37

7. Routing the Blanking Cable......4-38

8. Positioning the Left/Right

Margin ......................................4-38

B. Dr um Unit ......................................4-39

1. Detaching the Drum Unit ..........4-39

2. Cleaning ...................................4-40

C. Primary Corona Assembly.............4-41

1. Detaching the Primary Corona

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

2. Cleaning the Cleaning Pad and

the Primary Corona Roller .......4-42

3. Positioning the Solenoid for the

Primary Charging Roller...........4-43

D. Transfer Charging Assembly .........4-44

1. Detaching the Transfer Roller...4-44

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

E. Developing System........................4-47

1. Removing the Developing

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

2. Removing the Blade

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

3. Removing the Developing

Cylinder Side Seal....................4-48

4. Installing the Side Seal and

the Blade Assembly..................4-51

CHAPTER 5 PICK-UP/FEEDING SYSTEM

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

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

II. PICK-UP OPERATION (COPIER)......5-3

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

B. Sequence of Operations (pick-up/

feeding assembly;A4, 2 copies) ....5-4

III. PICK-UP FROM THE CASSETTE

FEEDING MODULE-A2......................5-5

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

B. Sequence of Operations

(cassette 2;A4, 2 copies)..............5-6

IV. MULTIFEEDER...................................5-7

A. Outline ...........................................5-7

B. Identifying the Size of Paper on

the Multifeeder...............................5-8

C. Sequence of Operations

(multifeeder;A4, 2 copies).............5-9

V. IDENTIFYING THE CASSETTE

SIZE....................................................5-10

VI. IDENTIFYING JAMS..........................5-12

A. Pre-Registration Delay Jam...........5-12

B. Pre-Registration Timing Jam.........5-13

vii

C. Pre-Registration Stationary Jam ...5-13

D. Separation Delay Jam...................5-14

E. Separation Stationar y Jam............5-14

F. Delivery Delay Jam........................5-15

G. Delivery Stationar y Jam ................5-15

VII. DISASSEMBLY AND ASSEMBLY......5-16

A. Pick-Up Assembly .........................5-16

1. Detaching the Pick-Up Roller

Unit...........................................5-16

2. Detaching the Pick-Up Roller...5-19

3. Points to Note When Attaching

the Pick-Up Roller ....................5-20

4. Detaching the Pick-Up Clutch ...5-20

5. Detaching the Separation Pad ..5-21

6. Adjusting the Left/Right

Registration ..............................5-22

B. Multifeeder Assembly ....................5-23

1. Detaching the Multifeeder

Assembly..................................5-23

2. Detaching the Multifeeder

Pick-Up Roller Unit...................5-24

3. Detaching the Multifeeder

Pick-Up Roller ..........................5-25

4. Points to Keep Note When Attaching the Multifeeder

Pick-Up Roller ..........................5-26

5. Detaching the Separation Pad ..5-26

6. Detaching the Multifeeder

Drive Unit..................................5-27

7. Detaching the Multifeeder

Clutch .......................................5-28

8. Positioning the Multifeeder Assembly (paper guide plate

cam) .........................................5-29

9. Adjusting the Left/Right

Registration ..............................5-30

10.Points to Note When Attaching the Multifeeder Assembly Rack

Plate .........................................5-30

C. Registration Roller Assembly........5-31

1. Detaching the Registration

Clutch .......................................5-31

2. Detaching the Upper

Registration Roller ....................5-31

3. Detaching the Lower

Registration Roller ....................5-33

D. Feeding Assembly.........................5-34

1. Detaching the Feeding Belt ......5-34

E. Cassette Unit.................................5-36

1. Detaching the Copier from

the Cassette Unit......................5-36

2. Detaching/Attaching the

Pick-Up Roller ..........................5-36

3. Detaching the Pick-Up Clutch..5-36

CHAPTER 6 FIXING SYSTEM

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

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

B. Controlling the Fixing Heater

Temperature ..................................6-3

C. Controlling the Supply Power for

the Fixing Heater...........................6-5

D. Detecting Overheating at the End

of the Fixing Heater.......................6-6

E. Protection Mechanism...................6-6

1. Thermistor (TH1, TH2).............6-6

2. Thermal Fuse (FU1).................6-6

3. Heater ON Detection Circuit

(230V model only)....................6-6

F. Correcting Displacement of the

Fixing Film.....................................6-7

1. Outline......................................6-7

2. Controlling the Fixing Film

Motor ........................................6-10

II. DISASSEMBLY AND ASSEMBLY......6-11

A. Fixing Assembly ............................6-11

1. Construction1 ...........................6-11

2. Detaching the Upper Fixing

Unit...........................................6-12

3. Detaching the Fixing Film, Tension Roller, Drive Roller, Fixing Cleaning Brush, and

Fixing Heater Unit ....................6-13

4. Points to Note When Attaching

the Fixing Film .........................6-20

5. Points to Note When Attaching

the Heater Connector...............6-20

6. Points to Note When Replacing

the Fixing Upper Unit ...............6-21

7. Adjusting the Fixing Film Drive

Roller Pressure.........................6-21

8. Detaching the Lower Fixing

Unit...........................................6-23

9. Detaching the Separation Claw/Lower Fixing Claw and

Fixing Cleaning Roller..............6-24

10.Adjusting the Lower Fixing

Roller Nip..................................6-25

B. Delivery Assembly.........................6-27

viii

CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS

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

A. Outline ...........................................7-1

B. Power Supply Circuit Assembly.....7-2

C. Detecting Errors in the Power

Supply PCB...................................7-4

1. Communication Error between DC Controller PCB and Composite Power Supply PCB ..7-4

2. Error in the High-Voltage

Output Data..............................7-4

3. Low-Voltage Output Data Error..7-4

4. Overcurrent in the Low-voltage

Power Supply ...........................7-4

D. Protection Mechanisms for the

Power Supply Circuit .....................7-5

II. DISASSEMBLY AND ASSEMBLY......7-6

A. Exter nal Covers.............................7-6

B. Control Panel.................................7-9

1. Detaching the Control Panel....7-9

C. Fans...............................................7-10

1. Detaching the Exhaust Fan ......7-10

D. Main Motor/Main Drive Assembly..7-11

1. Detaching the Main Motor Unit..7-11

2. Detaching the Main Drive

Assembly..................................7-11

3. Routing the Drive Belt..............7-13

E. Cassette unit .................................7-14

1. Detaching the Pick-Up Drive

Unit...........................................7-14

2. Detaching the Cassette Motor..7-15

3. Detaching the Cassette Driver

PCB..........................................7-16

F. DC Controller PCB........................7-17

1. Detaching the DC Controller

PCB..........................................7-17

2. Points to Note When Replacing the DC Controller

PCB..........................................7-17

G. Composite Power Supply PCB......7-18

1. Detaching the Composite

Power Supply PCB...................7-18

2. Points to Note When Handling the Composite Power Supply

PCB..........................................7-20

H. AE Sensor PCB .............................7-21

1. Points to Note When

Replacing the AE Sensor.........7-21

I. Intensity Sensor PCB....................7-21

1. Points to Note When Replacing

the Intensity Sensor .................7-21

I. SELECTING THE SITE......................8-1

II. UNPACKING AND INSTALLING

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

A. Unpacking and Removing Fixings ..8-2

B. Turning On the Copier...................8-5

C. Checking the Images and

Operations.....................................8-8

D. Attaching the Drum Unit................8-9

E. Changing the Cassette Size..........8-10

III. RELOCATING THE COPIER..............8-13

IV. REPLACING THE DRUM UNIT..........8-14

V. INSTALLING THE CONTROL CARD

IV N.....................................................8-17

VI. CASSETTE HEATER KIT 5

INSTALLATION PROCEDURE...........8-19

A. Unpacking ......................................8-19

B. Installation (to a Cassette

Feeding Module-A2/B2).................8-20

VII. INSTALLING THE REMOTE

DIAGNOSTIC DEVICE II....................8-26

A. Unpacking ......................................8-26

B. Installation to the Copier ...............8-27

CHAPTER 8 INSTALLATION

CHAPTER 9 MAINTENANCE AND SERVICING

I. PERIODICALLY REPLACED

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

A. Periodically Replaced Parts...........9-1

II. DURABLES ........................................9-2

A. Copier............................................9-2

B. Cassette Feeding Module-B2/

Cassette Feeding Module-A2 ........9-3

III. PERIODICAL SERVICING.................9-4

IV. SERVICING CHART ...........................9-5

V. NOTES ON DRUM KIT ......................9-6

CHAPTER 10 TROUBLESHOOTING

I. MAINTENANCE AND INSPECTION..10-3

A. Image Adjustment Basic

Procedure....................................10-3

B. Periodical Servicing.....................10-4

II. STANDARDS AND ADJUSTMENTS..10-5

A. Image Adjustment .......................10-5

1. Adjusting the Image Leading Edge Margin ([3], No.305;

registration ON timing)...........10-5

2. Adjusting the Leading Edge Non-Image Width ([3], No. 306;blank shutter ON

timing).....................................10-6

3. Adjusting the Image Trailling Edge Non-Image Width ([3], No.309;blank shutter

timing).....................................10-7

4. Adjusting the Left/Right

Registration............................10-8

5. Adjusting the Left/Right Margin

(No.311;left/right margin).......10-9

6. Adjusting the Scanning Lamp

Intensity..................................10-10

7. AE Adjustment .......................10-11

B. Exposure System ........................10-15

1. Routing the Scanner Drive

Cable......................................10-15

2. Adjusting the Mirror Position optical distance between No.1 mirror and No.2/No.3 mirror)..10-16

3. Adjusting the Scanner Cable

Tension...................................10-17

4. Assembling the Mirror

Positioning Tool ......................10-17

5. Points to Note When Attaching the Fluorescent Lamp Heater/

Scanning Lamp......................10-18

6. Positioning the Change

Solenoid .................................10-20

C. Image Formation System............10-21

1. Positioning the Blank Shutter

Solenoid .................................10-21

2. Routing the Blank Shutter

Cable......................................10-22

3. Positioning the Solenoid for the

Primary Charging Roller .........10-22

4. After Replacing the Drum

Unit.........................................10-23

5. Attaching the Drum Heater ....10-23

D. Pick-Up/Feeding System .............10-25

1. Orientation of the Pick-Up

Roller......................................10-25

2. Orientation of the Multifeeder

Pick-up Roller.........................10-25

3. Positioning the paper Guide

Plate Cam (multifeeder).........10-26

E. Fixing System..............................10-27

1. Points to Note when Attaching

the Fixing Film ........................10-27

2. Points to Note when Attaching

the Heater Connector .............10-27

3. Adjusting the Fixing Film Drive

Roller Pressure ......................10-28

4. Points to Note after Replacing

the Fixing Upper Unit .............10-29

5. Adjusting the Nip....................10-30

6. Routing the Drive Belt............10-31

7. Storing the Fixing Heater

Registance .............................10-31

8. Setting the Fixing Heater

Temperature Control Value .....10-32

F. Electrical......................................10-35

1. After Replacing the PCB........10-35

2. Clearing the Back-Up RAM....10-35

3. Checking the

Photointerrupters ....................10-36

4. Adjusting the Multifeeder

Paper width Sensor ................10-43

5. Setting the Paper Size for the

Universal Cassette.................10-44

III. TROUBLESHOOTING IMAGE

FAULTS .............................................10-45

A. Initial Checks...............................10-45

1. Site Environment....................10-45

2. Checking the Originals...........10-45

3. Checking the Copyboard Cover and the Copyboard

Glass......................................10-45

4. Checking the Paper................10-45

5. Others.....................................10-46

B. Samples of Image Faults.............10-48

C. Troubleshooting Faulty Images....10-49

1. The copy is too light

(half-tone only). ......................10-49

2. The copy is too light

(black solid also).....................10-50

3. The copy is too light

(overall, extremely).................10-50

4. The copy has uneven density

(front too dark)........................10-52

5. The copy has uneven density

(front too light)........................10-52

6. The copy is foggy (overall).....10-53

7. The copy is foggy (vertical). ...10-54

8. The copy has black lines

(vertical; thick fuzzy lines). .....10-54

9. The copy has black lines

(vertical, fine)..........................10-54

10.The copy has white spot

(vertical)..................................10-55

11.The copy has white lines

(vertical)..................................10-55

12.The copy has white spots

(horizontal). ............................10-56

13.The back of the copy is

soiled......................................10-57

14.The copy has a fixing fault.....10-58

15.The leading edge of the copy

is displaced. ...........................10-58

16.The leading edge of the copy

is displaced. ...........................10-58

17.The leading edge of the copy

is displaced. ...........................10-58

18.The copy has a blurred

image......................................10-59

19.The copy is foggy

(horizontal). ............................10-60

20.The copy has poor

sharpness. ..............................10-61

21.The copy is blank...................10-62

22.The copy is solid black...........10-62

IV. TROUBLESHOOTING

MALFUNCTIONS.............................10-63

A. Troubleshooting Malfunctions......10-63

1. E000.......................................10-63

2. E001.......................................10-64

3. E002, E003 ............................10-64

4. E004.......................................10-65

5. E007.......................................10-65

6. E010.......................................10-66

7. E030.......................................10-66

8. E064.......................................10-67

9. E202 (keys on control panel

invalidated).............................10-67

10.E210.......................................10-68

11.E220.......................................10-68

12.E240.......................................10-68

13.E261.......................................10-69

14.E710, E711, E712, E717 .......10-69

15.E803.......................................10-69

16.AC power supply is absent.....10-70

17.DC power supply is absent....10-71

18.The blank shutter fails to

move.......................................10-72

19.The photosensitive drum fails

to rotate..................................10-72

20.The pick-up operation fails

(from cassette). ......................10-73

21.The pick-up operation from

the multifeeder fails. ...............10-73

22.The scanner fails to move

forward/in reverse. ..................10-74

23.The registration roller fails to

rotate......................................10-74

24.The scanning lamp fails to

turn on....................................10-75

25.The lens fails to move............10-75

26.The fixing heater fails to

operate...................................10-76

27.The pre-exposure lamp fails

to turn on................................10-76

28.The add paper indicator fails

to turn off................................10-76

29 The jam message fails to turn

off. ..........................................10-77

V. TROUBLESHOOTING FEEDING

PROBLEMS.....................................10-78

A. Jams (copy paper).......................10-78

1. Pick-Up Assembly..................10-79

2. Separation/Feeding

Assembly ................................10-80

3. Fixing/Delivery Assembly.......10-80

B. Feeding Faults .............................10-81

1. Double feeding.......................10-81

2. Wrinkling.................................10-81

VI. ARRANGEMENT AND FUNCTIONS

OF THE ELECTRICAL PARTS.........10-82

A. Sensors .......................................10-82

B. Clutches, Solenoids, and

Switches......................................10-84

C. Motors, Heaters, and Lamps .......10-86

D. PCBs ...........................................10-88

E. Cassette Feeding Module-A2......10-90

F. Var iable Registors (VR) and

check Pins by PCB......................10-92

1. DC controller PCB ..................10-92

2. Composite power supply

PCB........................................10-93

VII. SERVICE MODE..............................10-94

A. Outline .........................................10-94

B. Using Ser vice Mode....................10-94

1. Activating Service Mode.........10-94

2. Selecting a Service Mode......10-95

3. Selecting Items.......................10-95

4. Using Adjustment Mode [3]

and Specification Mode [5].....10-95

5. Using Operation/Inspection

Mode [4].................................10-95

6. Clearing Stored Error.............10-95

7. Recording on the Service

Mode Label ............................10-96

C. Control Display Mode [1] .............10-97

D. I/O Mode [2] ................................10-99

E. Adjustment Mode [3] ...................10-102

F. Operation/Inspection Mode [4]....10-105

G. Specification Settings Mode [5]...10-107

H. Counter Mode [6] ........................10-108

VIII. SELF DIAGNOSIS............................10-109

A. Copier..........................................10-109

B. Self Diagnosis (ADF)...................10-113

C. Self Diagnosis (Sorter)................10-114

APPENDIX

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

B. SIGNALS AND ABBREVIATIONS......A-2

C. GENERAL CIRCUIT DIAGRAM.........A-3

not available

D . SPECIAL TOOLS................................A-5

E. SOLVENTS/OILS................................A-6

xii

CHAPTER 1

GENERAL DESCRIPTION

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

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

A. Copier............................................1-2

B. Cassette Feeding Module-B2/

Cassette Feeding Module-A2 ........1-5

III. NAMES OF PARTS ............................1-6

A. Exter ior View .................................1-6

B. Cross Section ................................1-7

IV. OPERATION.......................................1-9

A. Control Panel.................................1-9

B. Operation Mode.............................1-10

C. Making Two-Sided/Overlay

Copies (manual)............................1-11

D. User Mode.....................................1-12

E. Handling the Toner Bottle..............1-19

V. WARNINGS AND ACTIONS...............1-19

VI. ROUTINE MAINTENANCE BY THE

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

VII. IMAGE FORMATION..........................1-20

A. Outline...........................................1-20

This chapter introduces features and specifications, and explains how the machines are operated

and copies are made.

CHAPTER 1 GENERAL DESCRIPTION

I. FEATURES

The copier becomes ready to make copies as soon as it is turned on. When fitted

with options, it provides a maximum of four paper sources.

1. Multiple front loading and multifeeder for space saving.

• The cassette may be slid out to the front for paper supply work.

• With the adjustable cassette and the multifeeder, various types of paper may be used.

2. Office amenities and ecology.

• The copier is equipped with a heating mechanism, which makes the copier ready for copying work at power-on without wait time.

• The copier is designed compact, enabling effective use of office space.

• The use of roller charging has proved to reduce the generation of ozone significantly. (1/100 to 1/1000 compared to other Canon copiers)

• As the pick-up mechanism, center-reference is adopted in consideration of the use of recycled paper.

• A significant number of parts are made of plastic in an effort to promote recycling.

• The copier is designed as a clamshell type to facilitate clearing of jammed paper.

3. Dependable high image quality.

• The new HQ (high-quality) toner ensures faithful reproduction of solid black, text, and photos.

• In addition to Canon’s own single-component toner projection development method, the use of auto image control (AIC) ensures stable reproduction of images.

4. Practical basic features.

• As many as 18 copies (A4, horizontal) may be made per minute.

• Copies may be as large as A3/Ledger or as small as A5/STMT, accommodating postcards.

• The AE mechanism promises enhanced reproduction of newspapers or diazo originals.

• Using page separation mode, a book may be copied with its left and right pages processed separately.

• Copies may be made in zoom between 49% and 204%.

• The zoom fine-adjustment mechanism ensures better control for faithful reproduction of originals.

• The auto power-off mechanism helps further saving of energy.

• The interrupt mechanism enables cutting in on a continuous copying session.

1-1

CHAPTER 1 GENERAL DESCRIPTION

II. SPECIFICATIONS

A. Copier

1. Type

Item Body Copyboard Light source Lens Photosensitive

medium

2. System

Item Copying Charging Exposure Copy density

adjustment Development

Description Desk top Fixed Fluorescent lamp Zoom OPC (ø30)

Description Indirect electrophotographic Roller (direct charging) Slit (moving light source) Automatic (AE) or manual

Dry (toner projection)

Pick-up

Transfer Separation Cleaning Fixing

Auto Manual

1 cassette Multifeeder Roller Curvature + static eliminator Cleaning blade Fixing (by plane-shaped heater; 1100 W max.)

1-2

3. Features

Caution:

1. Use Canon-recommended paper.

2. Remove curling before feeding for a second time.

3. Fan out the transparencies before setting them on the multifeeder to prevent adhesion.

CHAPTER 1 GENERAL DESCRIPTION

1-3

Item Original type Maximum original

size Reproduction ratio

Wait time First copy

Continuous copying Copying speed Copy size

Cassette

Manual

Two-sided/ Manual overlay

Cassette

Multifeeder

Copy tray Non-image One-sided

width

Multi manual

Auto clear

Auto power-off

Option

Specification Sheet, book, 3-D object (2 kg max.) A3 (297

× 420 mm)/LDG (11" × 17")

Center reference Direct, 2R2E (Table 1-201)

Zoom 49% to 204% 0 sec

8.2 sec or less (11.6 sec or less at power-on; A4, Direct, non-AE, from cassette)

100 (max.; upper limit may be varied in service mode) See Table 1-202. Cassette: A3/11" × 17" to A5/STMT 3.94" × 5.88"

Manual: A3/11" × 17" to postcard (vertical) Plain paper (64 to 80 g/m

), tracing paper (SM1), colored paper,

recycled paper (64 to 80 g/m

), ecology paper (80 g/m2)

Plain paper (64 to 80 g/m

), tracing paper (SM1, GNT80), colored

paper, recycled paper (64 to 80 g/m

), ecology paper (80 g/m2),

transparency, postcard, label sheet, thick paper (81 to 128 g/m

)

Plain paper (64 to 80 g/m

), colored paper, postcard, recycled paper

(64 to 880 g/m

), ecology paper (80 g/m2)

34 mm deep (approx.; about 250 sheets of 80 g/,m

paper),

clawless, front loading (center reference) 5 mm high (max.; about 50 sheets of 80 g/m

), clawless (center

reference) 100 sheets (approx.; A3 size, 80 g/m

)

2.0 ±1.0 mm (leading edge), 2.5 ±1.5 mm (left/right, trailing edge)

2.0 ±1.0 mm (leading edge), 3.5 ±1.5 mm (left/right, trailing edge) Available (2 min standard; may be varied between 1 to 9 min in 1-

minute increments; may be disabled) Available (5 min standard; may be varied in user mode to 2, 5, 10,

15, 30, 60, 120 min) Cassette Feeding Module-B2, Cassette Feeding Module-A2, Control

Card IV N, Stapler Sorter B2/D1, MS-B1 ADF-E1

Copy paper

CHAPTER 1 GENERAL DESCRIPTION

4. Others

Item

Operating environment

Temperature Humidity Atmospheric

pressure

Power supply

230 V (50Hz)

Power consumption Maximum

Standby Continuous

Noise Copying

Standby Ozone (average over 8 hr) Dimensions Width

Depth

Height Weight

Specifications

7.5°C to 32.5°C/45.5°F to 90.5°F 5% RH to 85% RH

810.6 hPa to 1013.3 hPa (0.8 to 1 atm)

Serial numbers UCDXXXXX

1.5 kW or less

97.2 kJ per hr (27 wh average; reference only) 2088 kJ (580 wh average; reference only)

49.7 dB or less (1 m front) Sound power level by —

ISO method

0.01 ppm or less (average); 0.02 ppm or less (max.)

585 mm/23.0 in 622 mm/24.5 in 345 mm/13.6 in 48 kg (approx.)

Consumables Copy paper

Cartridge

Reproduction ratio DIRECT

REDUCE I REDUCE II ENLARGE I ENLARGE II ZOOM

Table 1-201 Standard Reproduction Ratios

Keep wrapped to protect against humidity. Avoid direct rays of the sun; keep at 40°C/104°F,

85% RH.

1: 1 (±0.5%)

1: 0.500 1: 0.707 1: 1.414 1: 2.000

49% to 204% (1% increments)

1-4

CHAPTER 1 GENERAL DESCRIPTION

Reproduction ratio

DIRECT 1: 1 (±0.5%)

REDUCE 1: 0.500 (+1.0%)

1: 0.707 (+1.0%)

ENLARGE 1: 2.000 (+1.0%)

1: 1.414 (+1.0%)

Table 1-202 Copying Speed

Specifications subject to change without notice.

Copy size A3 (297 × 420) A4 (210 × 297) A5 (148 × 210) A4R (297 × 210) A5R (210 × 148) A3 → A5R A3 → A4R A4 → A5 A5R → A3 A4R → A3 A5 → A4

Copies/min

10 18 21 14 18 20 12 12 11 10 19

B. Cassette Feeding Module-B2/Cassette Feeding Module-A2

Copy paper Cassette Power supply Dimensions

Weight

As per copier. As per copier. 34 V DC, 24V, 5V (from copier) Cassette Feeding Module-B2:585W × 622D × 105H (mm) /23.0in x 24.5in x 8.3in

Cassette Feeding Module-A2:585W × 622D × 210H (mm) /23.0in x 24.5in x 4.1in Cassette Feeding Module-B2: 9kg

Cassette Feeding Module-A2:16kg

Table 1-203

1-5

CHAPTER 1 GENERAL DESCRIPTION

q Copyboard cover w Power switch e Clip tray r Multifeeder

t Cassette y Front door u Control panel i Copyboard glass

q Open/close lever w Copy density correction knob e Static eliminator cleaner

r Heater switch t Copy tray y Static eliminator

III. NAMES OF PARTS

A. Exterior View

Figure 1-301

1-6

Figure 1-302

B. Cross Section

1. Body

CHAPTER 1 GENERAL DESCRIPTION

q No. 3 mirror w No. 2 mirror e No. 1 mirror r Scanning lamp t Copyboard glass y Copyboard cover u Lens i Exhaust fan o Pre-exposure lamp !0 Primar y charging roller

!1 Reflecting plate !2 No. 6 mirror !3 Developing cylinder !4 Developing assembly !5 No. 5 mirror !6 No. 4 mirror !7 Multifeeder tray

Multifeeder pick-up roller

!9 Cassette pick-up roller @0 Registration roller

@1 Transfer roller

Separation static eliminator

@3 Photosensitive drum @4 Feeding assembly @5 Cassette @6 Fixing film @7 Film tension roller @8 Film pressure roller @9 Film drive roller #0 Delivery roller

Figure 1-303

1-7

CHAPTER 1 GENERAL DESCRIPTION

3 5

2. Cassette Feeding Module-A2

q Cassette 2 w Cassette 3 e Cassette 2 pick-up roller

1-8

r Cassette 3 pick-up roller t Drive roller y Feeding roller

Figure 1-304

IV. OPERATION

1 2 3 4 5 6 7 8 9

C 0

Max 200% A4

1:1

Min 50%

A3 A5 A4

A3 A4 A4 A5

1:1

123

Autom. Paper

A3 A4

Autom. Zoom

Zoom

+–

qw er t y u i

o!1!2

!0@1@2 !3!4!5!6!7!8!9@0

q Image Compose key w Page Separate key e Warning indicator r Display t % key y Reset key u Keypad i Power switch o Interrupt key !0 Clear key !1 Stop key

!2 Star t key !3 Auto Ratio key !4 Zoom key !5 Paper Select key !6 Cassette/Jam indicator !7 Direct key !8 Reduce/Enlarge key !9 Copy density key @0 AE key @1 Sor ter key @2 Sor ter indicator

A. Control Panel

CHAPTER 1 GENERAL DESCRIPTION

Figure 1-401

1-9

CHAPTER 1 GENERAL DESCRIPTION

B. Operation Mode

Mode

Image Composition mode

Page Separation mode

Interrupt mode

Auto Ratio mode

AE mode Sort/staple

sort/group mode

Description

Press to set/reset image composition mode.

Press to set/reset page separation mode.

Press to interrupt an ongoing copying session.

Press it to set/reset auto ratio mode.

Press to set/re-set AE mode or user mode. Press it to select/reset sort, staple sor t, or

group mode.

Table 1-401

Remarks

Only when an ADF (accessory) is installed.

Only when an sorter (accessory) is installed.

1-10

CHAPTER 1 GENERAL DESCRIPTION

C. Making Two-Sided/Overlay Copies (manual)

You can make two-sided or overlay copies by manually feeding paper. You must,

however, keep the following in mind when making such copies:

q Be sure to orient the paper the same way for both sides when turning it over. w Make sure that the paper has not absorbed moisture. e Make sure that the paper has no curling. r After copying on the first side, sufficiently cool the paper; then, correct any curling

before feeding it for a second time.

t Use paper of 60 to 128 g/m y Correct any curling on postcards or thick paper (128 g/m

second side.

) before copying on the

Figure 1-405

1-11

D. User Mode

1. Outline

The copier provides user mode, which allows the user to change various settings or

to make various adjustments on his/her own; see Table 1-402.

Table 1-402

Display

CHAPTER 1 GENERAL DESCRIPTION

Menu No.

1-12

Function

Changing the auto clear time

Changing the auto power-off time

Fine adjusting (zoom)

Tur ning on/off auto sort/non-sor t (with ADF* and sorter* installed) *Accessory

Cleaning the feeder (with ADF* installed) Option

Selecting a density adjustment method for standard mode

Initializing user mode

Description

You may set the auto clear time between 1 and 9 min in 1-min increments. Setting it to ‘0’ disables the function.

You can set the auto power-off time to either 2, 5, 10, 15, 30, 60, or 120 min.

You can correct a slight discrepancy between original and copy sizes (direct); enlarge in X direction and reduce in Y direction independent of each other.

You may specify whether to evecute auto sort/non-sort.

Use it to clean the pick-up assembly of the ADF.

You can specify either AE or manual for density adjustment for standard mode.

You can return settings changed in user mode to initial settings.

Default settings

2 min

5 min

± 0%

CHAPTER 1 GENERAL DESCRIPTION

2. Common Operations a. Keys to Use in User Mode

• Clear Key Use it to return to the previous step; or, use it to clear a setting entered by mistake when making mode settings.

• Start Key Use it to accept a selected item when making user mode settings.

• AE Key Use it to return to copy mode when making user mode settings.

b. Operation

1) Hold down the AE key for about 4 sec or more.

• This will turn on the display, indicating “ ”.

2) Enter the menu number of each function using the keypad.

3) Press the Start key.

• The current setting of the respective function appears.

4) Enter a new setting using the appropriate key.

5) Press the start key.

• The copy count/ratio indictor turns on to indicate the user mode being changed.

• The setting of the respective user mode is changed.

6) Press the AE key.

• The copier returns to standby state.

3. Changing the Auto Clear Time ( )

1) Hold down the AE key for 4 sec or more.

• “ ” appears on the display.

2) Press the Start key.

• The display indicates the current setting (if initial, indicates ‘1-2’).

3) Enter a desired setting using the keypad.

• The display indicates the new setting (if 5 min, indicates ‘1-5’).

4) Press the Start key. “ ”

5) Press the AE key.

• The copier returns to standby state.

4. Changing the Auto Power-Off Time ( )

1) Hold down the AE key for 4 sec or more.

• “ ” appears on the display.

2) Enter ‘2’ using the keypad so that the display indicates “ ”.

3) Press the Start key.

• The display indicates the current setting (if initial, indicates ‘2-2’).

4) Enter a desired setting using the keypad.

1-13

CHAPTER 1 GENERAL DESCRIPTION

Auto power-off time (min)

5 10 15 30 60

120

Settings

2-1 2-2 2-3 2-4 2-5 2-6 2-7

Table 1-403

• The display indicates the new setting (if 10 min, indicates ‘2-3’).

5) Press the Start key.

• The auto power-off time is changed, and the display returns to “ ”.

6) Press the AE key.

• The copier returns to standby state.

Reference:

If you want to disab le the auto po w er-off function, use service mode (See p . 10-109.).

5. Zoom Fine-Adjustment ( )

1) Hold down the AE key for 4 sec or more.

• The display indicates “ ”.

2) Enter ‘3’ using the keypad so that the display indicates “ ”.

3) Press the Start key.

• The display indicates ‘3-1’ suggesting the direction of adjustment.

Direction of adjustment X direction (horizontal) Y direction (vertical)

Display

3-1 3-2

Table 1-404

Further, the copy density indicator shows the current setting. (See Figure 1-406.)

4) Press the copy density key to adjust the reproduction ratio in X direction. (See Figure 1-406.)

5) Press the Start key.

• The reproduction ratio in X direction is fine-adjusted, and the display indicates ‘3-

2’. Further, the copy density indicator shows the current setting. (See Figure 1-406.)

6) Press the Density key to adjust the reproduction ratio in Y direction. (See Figure 1-

406.)

1-14

7) Press the Start key.

• The zoom reproduction is fine-adjusted, and the display returns to “ ”.

8) Press the AE key.

• The copier returns to standby state. The fine-adjustment reproduction ratios as shown in the copy density display are as

follows:

■ Zoom Fine-Adjustment (Reduce) ■ Zoom Fine-Adjustment (Enlarge) Press the Lighter key. Press the Darker key.

Figure 1-402

6. Turning On and Off the Auto Cassette Change Mechanism ( )

1) Hold down the AE key for 4 sec or more.

• The display indicates “ ”.

2) Enter

r using the keypad so that the display indicates “ ”.

3) Press the Start key.

• The display indicates the current setting (if initial setting, ‘4-1’).

Table 1-405

CHAPTER 1 GENERAL DESCRIPTION

1-15

Initial setting (±0%)

-0.2%

-0.4%

-0.6%

-0.8%

-1.0%

Initial setting (±0%)

+0.2%

+0.4%

+0.6%

+0.8%

+1.0%

State of auto cassette change function

On Off

Settings

4-1 4-0

+ 359 hidden pages

Canon NP6218 Service Manual

CONTENTS

CHAPTER 1

I. FEATURES

II. SPECIFICATIONS

III. NAMES OF PARTS

IV. OPERATION