Brother DCP-8070D User manual

Confidential

Laser FAX/MFC

SERVICE MANUAL

Read this manual thoroughly before maintenance work.

Keep this manual in a convenient place for quick and easy reference at all times.

September 2009

SM-FAX105

8C5D01

(3)

MODEL:

DCP-8070D/8080DN/8085DN

MFC-8370DN/8380DN

MFC-8480DN/8880DN/8890DW

Confidential

TRADEMARKS

The Brother logo is a registered trademark of Brother Industries, Ltd.

Apple and Macintosh are trademarks of Apple Inc., registered in the United States and other countries.

PCL is either a trademark or a registered trademark of Hewlett-Packard Company in the United States

and other countries.

Windows Vista is either a registered trademark or a trademark of Microsoft Corporation in the United

States and/or other countries.

Microsoft, Windows, Windows Server and Internet Explorer are registered trademarks of Microsoft

Corporation in the United States and/or other countries.

Linux is a registered trademark of Linus Torvalds in the United States and other countries.

PostScript and PostScript3 are either registered trademarks or trademarks of Adobe Systems

Incorporated in the United States and/or other countries.

ENERGY STAR is a U.S. registered mark.

Citrix and MetaFrame are registered trademarks of Citrix Systems, Inc. in the United States.

Intel, Intel Xeon and Pentium are trademarks or registered trademarks of Intel Corporation.

AMD, AMD Athlon, AMD Opteron and combinations thereof, are trademarks of Advanced Micro

Devices, Inc.

PictBridge is a trademark.

Each company whose software title is mentioned in this manual has a Software License Agreement

specific to its proprietary programs.

All other trademarks are the property of their respective owners.

The Fuji Xerox 4024 II is a registered trademark of Fuji Xerox.

The Proprinter XL is a registered trademark of IBM.

The FX-850 is a registered trademark of Epson.

No part of this publication may be reproduced in any form or by any means without permission in writing

from the publisher.

All other product and company names mentioned in this manual are trademarks or registered

trademarks of their respective holders.

Specifications are subject to change without notice.

Confidential

Model

DCP-

8070D

DCP-

8080DN

DCP-

8085DN

MFC-

8370DN

MFC-

8380DN

MFC-

8480DN

MFC-

8880DN

MFC-

8890DW

Duplex Print/

Scan Yes/No Yes/No Yes/Yes Yes/No Yes/Yes Yes/No Yes/Yes Yes/Yes

Network No Wired Wired Wired Wired Wired Wired Wired/

Wireless

Document

Scanner Module CIS CCD CCD CIS CIS CCD CCD CCD

iConfidential

PREFACE

This service manual contains basic information required for after-sales service of the Laser

Multi-Function Center (hereinafter referred to as "the machine"). This information is vital to the

service personnel to maintain the high printing quality and performance of the machine.

This service manual covers the DCP-8070D/8080DN/8085DN, MFC-8370DN/8380DN/

8480DN/8880DN/8890DW machines.

This manual consists of the following chapters:

CHAPTER 1: SPECIFICATIONS

Provides specifications of each model, which enables you to make a comparison of the

different models.

CHAPTER 2: THEORY OF OPERATION

Gives an overview of the printing mechanisms as well as the sensors, actuators, and control

electronics. It aids in understanding the basic principles of operations as well as locating

defects for troubleshooting.

CHAPTER 3: ERROR INDICATION AND TROUBLESHOOTING

Details of error messages and codes that the incorporated self-diagnostic function of the

machine will display if any error or malfunction occurs. If any error message appears, refer

to this chapter to find which parts should be checked or replaced.

The latter half of this chapter provides sample problems that could occur in the main sections

of the machine and related troubleshooting procedures.

CHAPTER 4: PERIODICAL MAINTENANCE

Details of consumable parts and periodical maintenance parts. This chapter also covers

procedures for disassembling and assembling periodical maintenance parts.

CHAPTER 5: DISASSEMBLY/REASSEMBLY

Details of procedures for disassembling and assembling of the machine together with related

notes. The disassembly order flow provided enables you to see at a glance the quickest way

to get to parts involved.

At the start of a disassembly job, you can check the disassembly order flow that guides you

through a shortcut to get to the object parts.

This chapter also covers screw tightening torques and lubrication points to which the

specified lubrications should be applied during assembly jobs.

CHAPTER 6: ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED

AFTER PARTS REPLACEMENT

Details of adjustments and updating of settings, which are required if the main PCB and

some other parts have been replaced. This chapter also covers how to update the firmware.

CHAPTER 7: SERVICE FUNCTIONS

Describes the maintenance mode which is exclusively designed for the purpose of checking

the settings and adjustments using the keys on the panel.

This chapter also covers hidden function menus, which activate settings and functions or

reset the parts life.

ii Confidential

CHAPTER 8: CIRCUIT DIAGRAMS, WIRING DIAGRAM

Provides the Circuit Diagrams and Wiring diagram for the connections of the PCBs.

APPENDIX 1: WORKER SWITCH (WSW)

APPENDIX 2: DELETION OF USER SETTING INFORMATION, etc.

Provides instructions on how to delete such as user setting information recorded in the

machine.

APPENDIX 3: SERIAL NUMBERING SYSTEM

APPENDIX 4: SCREW CATALOGUE

APPENDIX 5: REFERENCES

APPENDIX 6: GLOSSARY

Information in this manual is subject to change due to improvement or redesign of the product.

A thorough understanding of this machine, based on information in this service manual, is

required for maintaining its print quality performance and for improving the practical ability to

find the cause of problems.

iii Confidential

REGULATION

For Europe and Other countries

Radio interference (220 to 240 volt model only)

This machine follows EN55022 (CISPR Publication 22)/Class B.

Before you use this product, make sure that you use one of the following interface cables.

(1) A shielded parallel interface cable with twisted-pair conductors and that it is marked

IEEE 1284 compliant.

(2) A USB cable.

The cable must not be more than 2 meters long.

IEC 60825-1 specification (220 to 240 volt model only)

This machine is a Class 1 laser product as defined in IEC 60825-1 specifications. The label

shown below is attached in countries where it is needed.

This machine has a Class 3B laser diode which produces invisible laser radiation in the laser

unit. You should not open the laser unit under any circumstances.

Caution

Use of controls or adjustments or performance of procedures other than those specified in

this manual may result in hazardous radiation exposure.

For Finland and Sweden

LUOKAN 1 LASERLAITE

KLASS 1 LASER APPARAT

Varoitus!

Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa

käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle.

Varning

Om apparaten används på annat sätt än i denna Bruksanvisning specificerats, kan

användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laserklass 1.

CLASS 1 LASER PRODUCT

APPAREIL À LASER DE CLASSE 1

LASER KLASSE 1 PRODUKT

iv Confidential

Internal laser radiation

Maximum radiation power: 5 mW

Wave length: 770 - 810 nm

Laser class: Class 3B

EU Directive 2002/96/EC and EN50419

(European Union only)

This equipment is marked with the above recycling symbol. It means that at the end of the

life of the equipment you must dispose of it separately at an appropriate collection point and

not place it in the normal domestic unsorted waste stream. This will benefit the environment

for all. (European Union only)

vConfidential

For USA and Canada

Federal Communications Commission (FCC) Declaration of Conformity

(For USA)

Responsible Party: Brother International Corporation

100 Somerset Corporate Boulevard

P. O . B o x 6 9 11

Bridgewater, NJ 08807-0911

USA

Telephone: (908) 704-1700

declares, that the products

Product name: Laser MFC DCP-8070D/8080DN/8085DN, MFC-8480DN/8370DN/

8380DN/8880DN/8890DW

complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) this device must accept any

interference received, including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital

device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference in a residential installation. This

equipment generates, uses, and can radiate radio frequency energy and, if not installed and

used in accordance with the instructions, may cause harmful interference to radio

communications. However, there is no guarantee that interference will not occur in a

particular installation. If this equipment does cause harmful interference to radio or television

reception, which can be determined by turning the equipment off and on, the user is

encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is

connected.

• Consult the dealer or an experienced radio/TV technician for help.

Important

A shielded interface cable should be used to ensure compliance with the limits for a Class B

digital device. Changes or modifications not expressly approved by Brother Industries, Ltd.

could void the user's authority to operate the equipment.

vi Confidential

Industry Canada Compliance Statement (For Canada)

This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

Laser Safety (110 to 120 volt model only)

This machine is certified as a Class 1 laser product under the U.S. Department of Health and

Human Services (DHHS) Radiation Performance Standard according to the Radiation

Control for Health and Safety Act of 1968. This means that the machine does not produce

hazardous laser radiation.

Since radiation emitted inside the machine is completely confined within protective housings

and external covers, the laser beam cannot escape from the machine during any phase of

user operation.

FDA Regulations (110 to 120 volt model only)

The U.S. Food and Drug Administration (FDA) has implemented regulations for laser

products manufactured on and after August 2, 1976. Compliance is mandatory for products

marketed in the United States. The following label on the back of the machine indicates

compliance with the FDA regulations and must be attached to laser products marketed in the

United States.

Internal laser radiation

Maximum radiation power: 5 mW

Wave length: 770 - 810 nm

Laser class: Class 3B

MANUFACTURED:

Brother Technology (Shenzhen) Ltd.

NO6 Gold Garden Ind., Nanling Buji, Longgang, Shenzhen, China

This product complies with FDA performance standards for laser products except for

deviations pursuant to Laser Notice No.50, dated July 26, 2001.

vii Confidential

SAFETY PRECAUTIONS

To use the machine safely

Please keep these instructions for later reference and read them before attempting any

maintenance.

WARNING

Do not use a vacuum cleaner to clean up scattered toner. Doing this might cause the toner

dust to ignite inside the vacuum cleaner, potentially starting a fire. Please carefully clean the

toner dust with a dry, lint-free cloth and dispose of it according to local regulations.

Note :

If there are faxes in the machine's memory, you need to print them or save them before

you turn off the power and unplug the machine.

There are high voltage electrodes

inside the machine. Before you clean

the inside of the machine, make sure

you have unplugged the telephone

line cord first and then the power cord

from the AC power outlet.

Do not handle the plug with wet

hands.

Doing this might cause an electrical

shock.

After you use the machine, some

internal parts are extremely HOT!

To prevent injuries, be careful not to

put your fingers in the areas shown in

the illustration.

The fuser unit is marked with a

caution label.

Please do not remove or damage the

label.

To prevent injuries, be careful not to

put your hands on the edge of the

machine under the scanner cover.

To prevent injuries, be careful not to

put your fingers in the area shown in

the illustrations.

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