Canon NP6512 User manual

1999 CANON INC. CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

REVISION 0

FY8-23B7-000

AUG. 1999

1999 CANON INC. CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

IMPORTANT

THIS DOCUMENTATION IS PUBLISHED BY CANON INC., JAPAN,TO SERVE AS A SOURCE

OF REFERENCE FOR WORK INTHE FIELD.

SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN MAY VARY SLIGHTLY

FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND OTHER

PRINTED MATTER.

ANYQUESTIONSREGARDINGINFORMATION CONTAINED HEREIN SHOULDBEDIRECTED

TOTHE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY.

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

MATION NOT APPLICABLETO CERTAIN AREAS.

Printed in Japan

Imprimé au Japon

Use of this manual should be strictly su-

pervised to avoid disclosure of confidential

information.

Prepared by

OFFICE IMAGING PRODUCTSTECHNICAL SUPPORT DIVISION

CANON INC.

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

Model

NP6512

NP6612

NP7120

NP7130

NP7130F

Type

code

TWA

TXA

PUB

PUC

NVF

PTZ

NVH

Default

ratio

2R2E

3R1E

2R2E

3R1E

ADF as

standard

√

Cassette

250 sheets

Universal

500 sheets

The notation “√” indicates that the item in question is available.

• This service handbook covers the models shown in the following table. Be sure to have

a good understanding of the difference from model to model before referring to this

handbook.

iii

CONTENTS

CHAPTER 1 MAINTENANCE AND INSPECTION

CHAPTER 2 STANDARDS AND ADJUSTMENTS

CHAPTER 3 ARRANGEMENT AND FUNCTIONS OF

ELECTRICAL PARTS

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

B. Durables and Consumables.........1-1

C. Scheduled Servicing ....................1-1

A. Mechanical...................................2-1

B. ADF ........................................... 2-26

A. Sensors and Solenoids................3-1

B. Switches.......................................3-2

C. Lamp, Heater, Motor, Etc. ............3-3

D. PCBs ............................................3-4

C. Electrical ................................... 2-37

E. ADF ..............................................3-5

F. Variable Resistors (VR) and

Check Pins by PCB......................3-6

CHAPTER 4 SERVICE MODE

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

B. Using Service Mode.....................4-1

C. Adjustment Mode (30) .................4-4

APPENDIX

A. General Timing Chart.................. A-1

B. Signals and Abbreviations .......... A-3

C. General Circuit Diagram ............. A-5

D. Special Tools ............................... A-7

E. Solvents/Oils ............................... A-8

F. Specifications.............................. A-9

D. Image Adjustment Basic

Procedure.....................................1-3

E. Points to Note for Servicing .........1-4

D. Operation/Inspection Mode (40) ..4-5

E. Machine Settings Mode (50)........4-6

F. Counter Mode (60).......................4-6

CHAPTER 5 SELF DIAGNOSIS

A. Self Diagnosis ..............................5-1

CHAPTER 1 MAINTENANCE AND INSPECTION

1-1

CHAPTER 1 MAINTENANCE AND INSPECTION

A. Periodically Replaced Parts

The machine does not have parts which must be replaced on a periodical basis.

B. Durables and Consumables

The machine does not have items designated as durables or consumables.

C. Scheduled Servicing

The machine does not have any parts which require scheduled servicing.

1-3

D. Image Adjustment Basic Procedure

Making Pre-Checks Adjusting the Optimum Density

Clean the parts.

Is the copy density

correction dial (VR107)

centered?

Set it at

the center.

Select non-AE, and set the copy density

adjusting lever to the middle index; then,

make two to three copies of the Test

Sheet (NA-3).

Check the following:

1. Density of gray scale No.9

2. Presence/absence of difference between front

and rear (Note 1)

3. Density of gray scale No.1 (good or bad; Note 1)

4. Fogging of background (Note 1)

YES

Scanning system,

pickup/feeding system,

delivery assembly

Check the following:

1. Drum unit

2. Scanning lamp

3. AE sensor PCB

4. DC controller PCB

5. Composite power supply PCB

(See the appropriate troubleshooting

procedure.)

Is the optimum

density obtained by intensity

adjustment?

(Note 2)

Can the

deviation be corrected

using the copy density correction

dial (VR107)?

Is gray scale No. 9

barely visible?

END

YES

Note:

1. The machine is not equipped with a function to

correct image faults. See the appropriate

troubleshooting procedure.

2. See p. 2-38.

1-4

E. Points to Note for Servicing

Lens

Part Tools/sovents Work/remarks

Reflecting plate

Blower brush

Cleaning.

No. 1/No. 6 mirror

Scanning lamp

Blower brush or alcohol

and lint-free paper

Moist cloth

Cleaning with a blower

blush; if dirt cannot be

removed, use alcohol and

lint-free paper.

Cleaning.

Optical path

Feeding belt

Item Tool/solvent

Separation pad

Cloth moistened with

water*

Cloth

Dry-wiping.

Cleaning.

Pickup roller Cloth moistened with

water* or alcohol Cleaning.

ADF

Work/remarks

Part

Tools/sovents

Work/remarks

AE sensor

Inlet guide

Photosensitive

drum

Transfer charging

roller

Blower brush

Solvent

Toner

Lint-free paper

Cleaning.

Do not use solvent; in

principle, do not touch or

clean. Never expose to

light.

Cleaning; do not use

water or solvent. Do not

touch, and take care not

to soil with solvent and oil.

Electrical unit

Part Tools/sovents Work/remarks

Multifeeder

pickup roller Moist cloth (well-wrung)

or alcohol Cleaning.

Multifeeder assembly

Part Tools/sovents Work/remarks

Cassette pickup

roller Moist cloth (well-wrung)

or alcohol Cleaning.

Cassette pickup assembly

Part Tools/sovents Work/remarks

Developing

cylinder Alcohol Cleaning.

Developing assembly

Part Tools/sovents Work/remarks

Static eliminator Special brush Cleaning.

Static eliminator

Part Tools/sovents Work/remarks

Feed belt Moist cloth Cleaning.

Feeding assembly

Part Tools/sovents Work/remarks

Registration roller

Transfer guide

Moist cloth

Cleaning.

Transfer guide assembly

Part Tools/sovents Work/remarks

Copyboard cover

Copyboard glass

Alcohol

Cleaning.

Fixing assembly

Drum unit/Transfer charging roller

*Be sure to wring it well.

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