Canon NP6317 Service Manual

REVISION 0

APR. 1999

FY8-13G5-000

IMPORTANT

THIS DOCUMENTATION IS PUBLISHED BY CANON INC ., J APAN, 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 INFORMA TION CONTAINED HEREIN SHOULD BE DIRECTED TO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY. THIS DOCUMENT ATION IS INTENDED FOR ALL SALES AREAS, AND MA Y 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 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

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 Chapter 2 Chapter 3

Chapter 4

Chapter 5

Chapter 6

Chapter 7

Chapter 8 Chapter 9 Chapter 10

General Description

shows how to operate the copier, and explains how copies are made.

Basic Operation

workings.

Exposure System

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.

Image Formation System

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.

Pick-Up/Feeding System

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.

Fixing System

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.

explains the principles used to fuse toner images to tranfer

Externals/Auxiliary Mechanisms

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.

Installtion

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

introduces requirements for the site of installation, and shows how

Maintenance and Servicing

consumables/durables and scheduled servicing charts.

Troubleshooting

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

introduces the copier's features and specifications,

provides outlines of the copier's various operational

discusses the principles of operation used for the copier's

discusses the principles of how images are formed.

explains the principles used from when copy paper

shows the copier's external parts, and

provides tables of periodically replaced parts and

provides tables of maintenance/inspection, standards/

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.

i

CHAPTER 1

GENERAL DESCRIPTION

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

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

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

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

C. Performance .......................... 1-2

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

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

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

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

IV. OPERATION ................................1-8

A. Control Panel.........................1-8

B. Daily Inspection to Be

Performed by the User ....... 1-10

V. IMAGE FORMATION ................ 1-11

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

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.

2

• As many as 50 copies (80 g/m

) may be made continuously using the multifeeding mecha-

nism.

6. Low warm-up time

• The copier warms up in than 25 sec.

1-1

CHAPTER 1 GENERAL DESCRIPTION

II. SPECIFICATIONS

A. Type

Body Copyboard Light sourse Lens Photosensitive medium

B. System

Reproduction Charging Exposure Copy density adjustment Development Pick-up Automatic

Manual Transfer Separation Drum cleaning Fixing

C. Performance

Desktop Fixed Halogen lamp Single lens + mirror movement OPC

Indirect electrostatic method Corona Slit (moving light source) Auto or manual Dry Exclusive cassette Multifeeder Corona Curvature and Static eliminator Blade Heat roller (900W)

Type of document Document size Wait time First copy Continuous copying Type of copy paper

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

Cassette Multifeed tray

Sheet, Book, 3-D object (2 kg) A3 max. 25 sec (approx.; at 20°C)

9.4 sec (A4, AE ON/OFF, 1:1) 99 copies A3 (max.), A6 (min.;148x105 mm) Plain paper (64 to 80 g/m2), Tracing paper, Colored paper Plain paper (64 to 128 g/m OHP film*, Label sheet

2

), Tracing paper*, Colored paper,

1-2

CHAPTER 1 GENERAL DESCRIPTION

Two-sided copying Overlay copying Cassette

Copy tray Non-image width (1st side) Auto clear Auto shutoff Option

Multifeed tray

Claw Standard Universal

Leading edge Left/Right

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

Provided 60 mm deep (about 500 sheets of 80 g/m2 paper) Yes 100 sheets (approx.; A4, 80 g/m2)

2.0 ±1.5 mm or less

2.5 ±1.5 mm or less Provided (2 min, standard) Yes ADF-A1, MS-A1, Stapler Sorter D3, CC-V

D. Others

Power supply

230V 50Hz

230V 50Hz Power consumption Noise (sound power level as prescribed by ISO)

Ozone Dimensions

Weight Operating environment

Others

Maximum

Copying

Standby

Width

Depth

Height

Temperature

Humidity

Atmospheric

pressure

Serial Numbers UFW xxxxx QFE xxxxx

1.5kW or less

55 dB or less 40 dB or less

0.05 ppm or less (UL standards) 610 mm 617 mm 416 mm 50 kg or less

15.0° to 30°C 5% to 80%

0.6m to 1

Keep copy paper wrapped to protect against moisture.

0.05ppm or less (UL standards)

1-3

CHAPTER 1 GENERAL DESCRIPTION

Reproduction mode

DIRECT

REDUCE

II

ENLARGE

II

A3 (297x420mm) A4 (210x297mm) B4 (257x365mm) B5 (182x257mm) A5R (210x149mm) 50%

I

A3 → A4 A4 → A3

I

200%

Paper size

Cassette

A3 A4 B4 B5

A5R

A4R

A3

Copies/min

9 17 10 17 16

10

9

1-4

III. NAMES OF PARTS

A. External View

[1] [2] [3]

[6] [5] [4]

CHAPTER 1 GENERAL DESCRIPTION

[1] Copy tray [2] Copyboard cover [3] Control panel [4] Cassette [5] Front cover [6] Delivery cover

[1]

[12]

[11]

[10]

[9]

Figure 1-301

[2] [3]

[6]

[8]

[7]

Figure 1-302

[5]

[4]

[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

1-5

CHAPTER 1 GENERAL DESCRIPTION

B. Cross Section

[1] [3] [5] [6] [7] [8] [9] [11] [12] [13]

[10][4][2]

[1] No. 3 mirror [2] No. 2 mirror [3] No. 1 mirror [4] Scanning lamp [5] Copyboard glass [6] Copyboard cover [7] Lens [8] Pre-exposure lamp [9] Primary corona

assembly

1-6

[15][24] [23] [22] [21] [20] [19] [18] [17] [16] [14]

[10] No. 6 mirror [11] No. 5 mirror [12] No. 4 mirror [13] Multifeeder tray [14] Developing assembly [15] Feeder roller 1

[19] Photosensitive drum [20] Cassette [21] Feeder assembly [22] Exhaust fan [23] Fixing assembly

[24] Delivery roller [16] Pick-up roller [17] Registration roller [18] Transfer corona

assembly

Figure 1-303

CHAPTER 1 GENERAL DESCRIPTION

Blank Page

1-7

CHAPTER 1 GENERAL DESCRIPTION

IV. OPERATION

A. Control Panel

[1] [2] [3][4] [5] [6] [7] [8] [9] [10]

[21][22]

[20] [19] [18]

[11][12][13][14][15][16][17]

Figure 1-401

1-8

CHAPTER 1 GENERAL DESCRIPTION

No. Name

[1] Sort/Group key

[2] Two-Page Separation key [3] Paper Jam indicator [4] Control Card Check indicator [5] Paper Out indicator

[6] Toner Out indicator [7] Copy quantity/Copy ratio display

[8] Reset key

[9] Start key [10] Stop key [11] Clear key [12] Number keys [13] Percent key [14] Zoom keys

[15] Autom. Zoom key

[16] Paper Select key

[17] Paper Supply/Jam Location indica-

tor

[18] Enlarge key

[19] 1:1 (Direct) Copy key [20] Reduce key [21] AE (Automatic Exposure) key [22] Exposure lever

Description

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. Press to select or cancel the Two-Page Separation mode. Flashes when a paper jam occurs. Flashes when the Control Card is not fully inserted. Flashes when there is no paper in the selected paper supply (paper cassette or stack bypass). Flashes when toner needs to be added. Displays the number of copies to be made, and the selected enlargement/reduction ratio. Also, when the copier is not functioning properly, the Service Call message will appear here. Press to return the copier to the Standard mode. Press to begin copying. Press to stop the copier before copying is complete. Press to change the number of copies to be made to one. Press to input the number of copies to be made. Press to display the selected enlargement/reduction ratio. Press to reduce or enlarge copy images by any ratio from 50% to 200%, selectable in 1% increments. 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. Press to select the paper supply (paper cassette or stack bypass). Lights to show the selected paper supply (paper cassette 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. Press to enlarge copy images using a fixed enlargement ratio. Press to make copies the same size as the original. Press to reduce copy images using a fixed reduction ratio. Press to select or cancel Automatic Exposure Control. Use to manually adjust the lightness/darkness of copies.

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

V. IMAGE FORMATION

A. Outline

Copyboard glass

Scanning lamp

CHAPTER 1 GENERAL DESCRIPTION

Lens

+

Developing assembly

+

+ +

Picture to be changed (1 register station only)

+

Cleaning roller

+

Upper fixing roller

Primary corona assembly

Pre-exposure lamp

Drum cleaner

Upper fixing roller

+

Transfer corona assembly

Static charge eliminator

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

8. Drum cleaning

Copy delivery

2. Primary corona

1. Pre-exposure

6. Separation

7. Fixing

3. Image exposure

4. Developing

5. Transfer

Registration

Cassette

Flow of copy paper Direction of rotation of drum

Figure 1-502

Multifeeder

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

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

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

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

D. DC Controller Outputs...........2-6

E. Basic Sequence of Operations

(Direct, Continuous Copying

(2 sheets)) .............................2-9

CHAPTER 2 BASIC OPERATION

I. BASIC OPERATION

A. Functions

The copier can be divided into four functional sections: paper pick-up and feed system, expo-

sure system, image formation system, and control system.

Exposure systemControl system

Control panel

Control circuit

Paper delivery tray

Copy delivery assembly

Fixing assembly

Scanner

Pnimary corona

Cleaning unit

Feeder

Cassette

Copybord

Optical system

Photosensi-

tive drum

Transfer and

separation

assembly

Image tormation system

Developing

assembly

Pick-up

control

assembly

Paper pick-up and feed system

Multifeeder

assembly

Figure 2-101

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

CHAPTER 2 BASIC OPERATION

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

DC controller PCB

AC driver/DC power supply PCB

Microprocenssor (Q300)

HVT

PROM (Q301)

EEPROM

(Q317)

Registration roller clutch Lens solenoid Pick-up clutch solenoid Blank solenoid Multifeeder solenoid

Lamp regulator Scanning lamp

Main motor

Fixing roller heater

Primary/Transfer corona assembly

Developing bias GND bias

Conntrol panel Scanner motor

Thermistors

Driver

(Q324)

Microprocessor

Sorter controller PCB

Microprocessor

ADF controller PCB

Mirror motor

Pre-exposure lamp

Exhaust fan Scanner cooling fan

Figure 2-102

SorterSensors, Switches

ADFSensors, Switches

2-3

CHAPTER 2 BASIC OPERATION

C. Inputs to DC Controller

1. Inputs to DC Controller (1/2)

Q1

J24-1 J311-5

Multifeeder paper sensor

-2 -4

-3 -3

5V

MFPD

DC controller PCB

when paper is over Q1, "1" (light-blocking plate is at Q1)

Pre-registration paper sensor

Right door sensor

Mirror home position sensor

Scanner home position sensor

Lens home position sensor

Q2

J23-1 J304-9

-2 -8

-3 -7

Q3

J27-1 J311-8

-2 -7

-3 -6

Q4

J801-1 J312-3

-2 -2

-3 -1

Q5

J35-1 J312-6

-2 -5

-3 -4

Q6

J33-1 J312-9

-2 -8

-3 -7

5V

PRP

5V

RDC

5V

MHP

5V

SCHP

5V

LHP

when paper is at Q2, "1" (light-blocking plate is at Q2)

when night door is closed, "1" (light-blocking plate is at Q3)

when mirror motor is at home position, "1" (light-blocking plate is at Q4)

when scanner is at home position, "1" (light-blocking plate is at Q5)

when lens is at home position, "1" (light-blocking plate is at Q6)

Cassette paper sensor

Delivery paper sensor

2-4

Q7

J26-1 J303-7

-2 -6

-3 -5

Q8

J44-1 J314-5

-3 -3

-2 -4

5V

CPEP

5V

DLP

when paper is in cassette, "1" (light-blocking plate is at Q7)

when paper is at Q8, "0" (light-blocking plate is not at Q8)

Figure 2-103

2. Inputs to DC Controller (2/2)

CHAPTER 2 BASIC OPERATION

DC controller PCB

AE sensor

Black toner leveol sensor

Thermistor 2 (auxiliary)

Thermistor 1 (main)

Cassette size sensor

AE

24V

-

+

TS1

TH2 (NTC2)

TH1(NTC1)

CST(SW3)

J701-4 J312-13

-2 -11

-1

-3 -12

J39-3 J303-3

-2 -2

-1 -1

J45-1 J317-1

-2 -2

-4 J317-4

-3 -3

J28-3 J313-2

-4 -3

-5 -4

-6 -5

-2 -1

-10

24V

AE AEGIN

5V

BTEP

TH2

TH1

CSZ1 CSZ2 CSZ3 CSZ4 oscillation signal

See p. 3-25

The voltage lowers as the fixing heater temperature rises.

Reads the cassette size; see p. 3-32.

Figure 2-104

2-5

CHAPTER 2 BASIC OPERATION

D. DC Controller Outputs

1. DC Controller Out Puts (1/3)

Noise

Fixing roller heater

Thermoswitch 1

Scanning lamp

filter

LA1

DS1

F1

LA2

SW1

J509-1

J4-1

-2

J201-1

F2

J202-3

Thermoswitch 2

Control panel PCB

24V

Power supply

assembly

24V

K100

Fixing heater ON detection

circuit

Fixing

heater drive

circuit

-2

Lamp driver unit

-1

J503-1J509-2

J203

J316-11

J318-3

-1

-4

-5

-3

-2

-6

-2

-1

J305

-6

-3

LAMP-CHECK

-2

ZERO-CROSS

-4

LIGHT

-5

-1

LAMP-SHIFT

PWOFF

HTPT

HTCK

HTRD

24V

DC controller PCB

when "0" AC power OFF (main

switch).

when "0" AC power OFF (power

supply unit).

when "0" fixing roller heater ON.

when "1" fixing roller heater ON.

See p. 3-20.

2-6

Scanner motor

Mirror motor

Main motor

MMLOCK

-2

MMD

-3

-4 +24V

See p. 3-9.

when "0" main motor is moving. when "1"

main motor ON.

M2

M3

M1

J351-1

J301-1

-2

-3

-4

Figure 2-105

Canon NP6317 Service Manual

INTRODUCTION

CONTENTS

CHAPTER 1

I. FEATURES

II. SPECIFICATIONS

III. NAMES OF PARTS

IV. OPERATION

V. IMAGE FORMATION

CHAPTER 2

I. BASIC OPERATION