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FACSIMILE EQUIPMENT

SERVICE MANUAL

MODEL: FAX4750/5750

MFC8300/8600/8700

FAX8350P/8750P

MFC9650

PREFACE

This publication is a Service Manual covering the specifications, construction, theory of operation,

and maintenance of the Brother facsimile equipment. It includes information required for field

troubleshooting and repair--disassembly, reassembly, and lubrication--so that service personnel

will be able to understand equipment function, to rapidly repair the equipment and order any

necessary spare parts.

To perform appropriate maintenance so that the facsimile equipment is always in best condition

for the customer, the service personnel must adequately understand and apply this manual.

This manual is made up of six chapters and appendices.

CHAPTER I.GENERAL DESCRIPTION

CHAPTER II.INSTALLATION

CHAPTER III.THEORY OF OPERATION

CHAPTER IV.DISASSEMBLY/REASSEMBLY AND LUBRICATION

CHAPTER V. MAINTENANCE MODE

CHAPTER VI. ERROR INDICATION AND TROUBLESHOOTING

Appendix 1. EEPROM Customizing Codes

Appendix 2. Circuit Diagrams

This manual describes the models and their versions to be destined for major countries. The specifications

and functions are subject to change depending upon each destination.

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SAFETY INFORMATION

Laser Safety (110-120V Model only)

This printer is certified as a Class 1 laser product under the US 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 printer does not produce hazardous laser radiation.

Since radiation emitted inside the printer is completely confined within the protective housings and

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

operation.

CDRH Regulations (110-120V Model only)

The Center for Device and Radiological Health (CDRH) of the US Food and Drug Administration

implemented regulations for laser products on August 2, 1976. These regulations apply to laser

products manufactured from August 1, 1976. Compliance is mandatory for products marketed in

the United States. The label shown below indicates compliance with the CDRH regulations and

must be attached to laser products marketed in the United States.

The label for Chinese products

MANUFACTURED: JULY 1999 C

BROTHER CORP. (ASIA) LTD.

BROTHER BUJI NAN LING FACTORY

Gold Garden Industry, Nan Ling Village, Buji,

Rong Gang, Shenzhen, China.

This product complies with FDA radiation

performance standards, 21 CFR Subchapter J.

CHAPTER I.

GENERAL DESCRIPTION

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CHAPTER I. GENERAL DESCRIPTION

CONTENTS

1. EQUIPMENT OUTLINE........................................................................................ I-1

1.1 External Appearance and Weight ................................................................. I-1

1.2 Components................................................................................................. I-1

2. SPECIFICATIONS................................................................................................ I-2

I- 1

1. EQUIPMENT OUTLINE

1.1 External Appearance and Weight

The figure below shows the equipment appearance and approximate dimensions.

w/o 2nd cassette w/ 2nd cassette

Weight: Machine proper 10.5 kg 14.0 kg

Machine (incl. drum unit & toner cartridge) 12.0 kg 15.5 kg

In package 16.5 kg 22.0 kg

1.2 Components

The equipment consists of the following major components:

*1 Provided on those models equipped

with a handset.

*2 Provided on those models without

handset.

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I- 2

2. SPECIFICATIONS

(1/4)

Model FAX4750 MFC8300

GENERAL

Print Engine Laser (ZL) Laser (ZL)

Modem Speed (bps) 14,400 (Fax) 14,400 (Fax)

Transmission Speed (sec.) 6 6

ITU-T Group G3 G3

Coding Method MH/MR/MMR MH/MR/MMR

Input/Output Width 5.8" to 8.5" x 2.75" to 8.5" 5.8" to 8.5" x 2.75" to 8.5"

ADF (pages) 30 (50 *1)30

LCD Size 16 chars x 2 lines 16 chars x 2 lines

On-Screen Programming Yes Yes

Backup Clock Yes (1 hour) Yes (1 hour)

Memory Capacity (MB) 4 2

Backup Memory No No

Optional Memory Yes (8 & 16 MB) Yes (8 & 16 MB)

Color Gray 1495 Gray 1495

Standby Mode Yes Yes

PC-Fax Protocol Compliance Class 2 Class 2

Simultaneous Operation Yes Yes

Data Modem No No

Energy Star Compliance (for U.S.A.) Yes Yes

LCD Backlight No No

Operating Environment Temperature 10 to 32.5 °C 10 to 32.5 °C

Humidity 20 to 80% (without condensation) 20 to 80% (without condensation)

Power Source 120 VAC, 50/60Hz 120 VAC, 50/60Hz

Power Consumption (Sleep/Peak) Less than 9W/60W/850W Less than 9W/60W/850W

TELEPHONE

Automatic Redial Yes Yes

Handset Yes Yes

One-Touch Dial 32 (16 x 2) 32 (16 x 2)

Speed Dial 100 100

Telephone Index Yes Yes

Speaker Phone No No

Chain Dialing Yes Yes

Caller ID Yes Yes

Call Waiting Caller ID Yes Yes

Distinctive Ringing Yes Yes

Hold/Mute Key Yes Yes

Power Failure Dialing No No

Speaker Volume Yes (3 levels + OFF) Yes (3 levels + OFF)

Ringer Volume Yes (3 levels + OFF) Yes (3 levels + OFF)

Receiver Volume Yes (2 levels + Hearing amplify level) Yes (2 levels + Hearing amplify level)

PBX Feature No No

Transfer Method Flash Flash

Digits of One-Touch & Speed Dial 20 digits 20 digits

Registrable Number of Characters 15 chars 15 chars

*1Xerox 4200 (20 lb/LTR) in normal business environments

I- 3

(1/4)

Model MFC8600 MFC8700

GENERAL

Print Engine Laser (ZL) Laser (ZL)

Modem Speed (bps) 14,400 (Fax) 14,400 (Fax)

Transmission Speed (sec.) 6Approx. 5

ITU-T Group G3 G3

Coding Method MH/MR/MMR MH/MR/MMR/JBIG

Input/Output Width 5.8" to 8.5" x 2.75" to 8.5" 5.8" to 8.5" x 2.75" to 8.5"

ADF (pages) 30 30 (50 Conditional *1)

LCD Size 16 chars x 2 lines 16 chars x 2 lines

On-Screen Programming Yes Yes

Backup Clock Yes (1 hour) Yes (1 hour)

Memory Capacity (MB) 4 4

Backup Memory No No

Optional Memory Yes (8 & 16 MB) Yes (8 & 16 MB)

Color Gray 1495 Gray 1495

Standby Mode Yes Yes

PC-Fax Protocol Compliance Class 2 Class 1 & 2

Simultaneous Operation Yes Yes

Data Modem No No

Energy Star Compliance (for U.S.A.) Yes Yes

LCD Backlight No No

Operating Environment Temperature 10 to 32.5 °C 10 to 32.5 °C

Humidity 20 to 80% (without condensation) 20 to 80% (without condensation)

Power Source 120 VAC, 50/60Hz 120 VAC, 50/60Hz

Power Consumption (Sleep/Peak) Less than 9W/60W/850W Less than 9W/60W/850W

TELEPHONE

Automatic Redial Yes Yes

Handset Yes Yes

One-Touch Dial 32 (16 x 2) 32 (16 x 2)

Speed Dial 100 100

Telephone Index Yes Yes

Speaker Phone No No

Chain Dialing Yes Yes

Caller ID Yes Yes

Call Waiting Caller ID Yes Yes

Distinctive Ringing Yes Yes

Hold/Mute Key Yes Yes

Power Failure Dialing No No

Speaker Volume Yes (3 levels + OFF) Yes (3 levels + OFF)

Ringer Volume Yes (3 levels + OFF) Yes (3 levels + OFF)

Receiver Volume Yes (2 levels + Hearing amplify level) Yes (2 levels + Hearing amplify level)

PBX Feature No No

Transfer Method Flash Flash

Digits of One-Touch & Speed Dial 20 digits 20 digits

Registrable Number Of Characters 15 chars 15 chars

*1Xerox 4200 (20 lb/LTR) in normal business environments

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I- 4

(1/4)

Model FAX5750 FAX8350P

GENERAL

Print Engine Laser (ZL) Laser (ZL)

Modem Speed (bps) 33,600 (Fax) 14,400 (Fax)

Transmission Speed (sec.) Approx. 2 6

ITU-T Group Super G3 G3

Coding Method MH/MR/MMR/JBIG MH/MR/MMR

Input/Output Width 5.8" to 8.5" x 2.75" to 8.5" 5.8" to 8.5" x 2.75" to 8.5"

ADF (pages) 30 (50 *1)30 (50 *1)

LCD Size 16 chars x 2 lines 16 chars x 2 lines

On-Screen Programming Yes Yes

Backup Clock Yes (1 hour) Yes (9 hours)

Memory Capacity (MB) 44 (RAM) + 2 (flash ROM)

Backup Memory No Yes

Optional Memory Yes (8 & 16 MB) Yes (2 or 4 MB: flash)

Color Gray 1495 Gray 1495

Standby Mode Yes Yes

PC-Fax Protocol Compliance Class 2 Class 2

Simultaneous Operation Yes Yes

Data Modem No No

Energy Star Compliance (for U.S.A.) Yes No

LCD Backlight No No

Operating Environment Temperature 10 to 32.5 °C 10 to 32.5 °C

Humidity 20 to 80% (without condensation) 20 to 80% (without condensation)

Power Source 120 VAC, 50/60Hz 220-240 VAC, 50/60Hz

Power Consumption (Sleep/Peak) Less than 9W/60W/850W Less than 7W/9W/60W/850W

TELEPHONE

Automatic Redial Yes Yes

Handset Yes No

One-Touch Dial 32 (16 x 2) 32 (16 x 2)

Speed Dial 100 100

Telephone Index Yes Yes

Speaker Phone No No

Chain Dialing Yes Yes

Caller ID Yes No

Call Waiting Caller ID No No

Distinctive Ringing Yes Yes

Hold/Mute Key Yes No

Power Failure Dialing No No

Speaker Volume Yes (3 levels + OFF) Yes (3 levels + OFF)

Ringer Volume Yes (3 levels + OFF) Yes (3 levels + OFF)

Receiver Volume Yes (2 levels + Hearing amplify level) N/A

PBX Feature No Yes

Transfer Method Flash Flash/Earth

Digits of One-Touch & Speed Dial 20 digits 20 digits

Registrable Number Of Characters 15 chars 15 chars

*1Xerox 4200 (20 lb/LTR) in normal business environments

I- 5

(1/4)

Model MFC9650 FAX8750P

GENERAL

Print Engine Laser (ZL) Laser (ZL)

Modem Speed (bps) 14,400 (Fax) 33,600 (Fax)

Transmission Speed (sec.) 6Approx. 2

ITU-T Group G3 Super G3

Coding Method MH/MR/MMR MH/MR/MMR/JBIG

Input/Output Width 5.8" to 8.5" x 2.75" to 8.5" 5.8" to 8.5" x 2.75" to 8.5"

ADF (pages) 30 (50 *1)30 (50 *1)

LCD Size 16 chars x 2 lines 16 chars x 2 lines

On-Screen Programming Yes Yes

Backup Clock Yes (9 hours) Yes (9 hours)

Memory Capacity (MB) 4 (RAM) + 2 (flash ROM) 4 (RAM) + 8 (flash ROM)

Backup Memory Yes Yes

Optional Memory Yes (2 or 4 MB: flash) N/A

Color Gray 1495 Gray 1495

Standby Mode Yes Yes

PC-Fax Protocol Compliance Class 1 & 2 Class 1 & 2

Simultaneous Operation Yes Yes

Data Modem No No

Energy Star Compliance (for U.S.A.)

LCD Backlight No No

Operating Environment Temperature 10 to 32.5 °C 10 to 32.5 °C

Humidity 20 to 80% (without condensation) 20 to 80% (without condensation)

Power Source 220-240 VAC, 50/60Hz 220-240 VAC, 50/60Hz

Power Consumption (Sleep/Peak) Less than 7W/9W/60W/850W Less than 7W/9W/60W/850W

TELEPHONE

Automatic Redial Yes Yes

Handset No No

One-Touch Dial 32 (16 x 2) 32 (16 x 2)

Speed Dial 100 100

Telephone Index Yes Yes

Speaker Phone No No

Chain Dialing Yes Yes

Caller ID No No

Call Waiting Caller ID No No

Distinctive Ringing Yes Yes

Hold/Mute Key No No

Power Failure Dialing No No

Speaker Volume Yes (3 levels + OFF) Yes (3 levels + OFF)

Ringer Volume Yes (3 levels + OFF) Yes (3 levels + OFF)

Receiver Volume N/A N/A

PBX Feature Yes Yes

Transfer Method Flash/Earth Flash/Earth

Digits of One-Touch & Speed Dial 20 digits 20 digits

Registrable Number Of Characters 15 chars 15 chars

*1Xerox 4200 (20 lb/LTR) in normal business environments

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