Brother MFC-9100C User manual

FACSIMILE EQUIPMENT
SERVICE MANUAL
MODEL: MFC9100C/MFC760

© Copyright Brother 1999
All rights reserved.
No part of this publication may be reproduced in any
form or by any means without permission in writing
from the publisher.
Specifications are subject to change without notice.

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, LUBRICATION AND ADJUSTMENT
CHAPTER V. MAINTENANCE MODE
CHAPTER VI. ERROR INDICATION AND TROUBLESHOOTING
Appendix 1. EEPROM Customizing Codes
Appendix 2. Circuit Diagrams
This manual describes the model and its versions to be destined for major countries. The specifications and
functions are subject to change depending upon each destination.

CHAPTER I.
GENERAL DESCRIPTION

CHAPTER I. GENERAL DESCRIPTION
CONTENTS
1. EQUIPMENT OUTLINE........................................................................................I-1
1.1External Appearance and Weight..................................................................I-1
1.2Components.................................................................................................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.
Weight: Machine proper Approx. 16 kg (36 lb.)
In package Approx. 20 kg (44 lb.)
1.2 Components
The equipment consists of the following major components:

I- 2
2. SPECIFICATIONS (1/4)
MODEL MFC9100C MFC760
GENERAL
Print Engine BY2 BY2
Modem Speed (bps) 14.400 14.400
Transmission Speed (sec) 6 6
ITU-T Group G3 G3
Coding Method MH/MR/MMR MH/MR/MMR
Input/Output Width 8.5"/8.5" 8.5"/8.5"
ADF (pages) 50 50
LCD Size 16 x 2 16 x 2
On-Screen Programming Yes Yes
Backup Clock 1 hour 1 hour
Memory Capacity 8 MB 8 MB
Backup Memory N/A N/A
Optional Memory N/A N/A
Color New Color New Color
Standby Mode N/A N/A
PC-Fax Protocol Compliance Class 1, 2 Class 1,2
Simultaneous Operation Yes (Print/Fax, Print/Copy, Print/Scan) Yes (Print/Fax, Print/Copy, Print/Scan)
Data Modem N/A N/A
Energy Star Compliance Yes Yes
TELEPHONE
Automatic Redial Yes Yes
Handset N/A N/A
One-Touch Dial 16 16
Speed Dial 100 100
Telephone Index Yes Yes
Speaker Phone N/A N/A
Chain Dialing Yes Yes
Caller ID Yes N/A
Call Waiting Caller ID N/A N/A
Distinctive Ringing Yes Yes for UK
Hold/Mute Key N/A N/A
Junk Call Barrier N/A N/A
Power Failure Dialing N/A N/A
Ringer Volume Yes (3 levels + OFF) Yes (3 levels + OFF)
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
FAX
Internet FAX Yes (Netcentric) Yes (WordCraft)
Easy Receive/Fax Detect Yes Yes
Fax/Tel Switch N/A N/A
Super Fine Yes Yes
300 dpi Transmission N/A N/A

I- 3
(2/4)
MODEL MFC9100C MFC760
Gray Scale 256 256
Contrast Text (Light/Normal/Dark), Photo Text (Light/Normal/Dark), Photo
Smoothing N/A N/A
Call Reservation N/A N/A
Password Check N/A N/A
Enhanced Remote Activation Yes Yes
Multi-Resolution Transmission Yes Yes
Multi Transmission N/A N/A
Next-Fax Reservation Yes (= DUAL ACCESS) Yes (= DUAL ACCESS)
Delayed Timer Yes (Up to 50 timers or 50 jobs) Yes (Up to 50 timers or 50 jobs)
Polling Yes (Std/Seq) Yes (Std/Del/Seq/Sec)
Quick Scan (Memory Transmission) Yes (Super/3 sec.)
- 590 pages x 11K Yes (Super/3 sec.) - 590pages x 11K
Broadcasting Yes (166 locations) Yes (166 locations)
Batch Transmission N/A N/A
Auto Reduction Yes Yes
Out-of-Paper Reception Yes (600 pages x 11K) Yes (600 pages x 11K)
Dual Access Yes Yes
ECM (Error Correction Mode) Yes Yes
ITU SUB Addressing N/A N/A
LIST/REPORT
Activity Report/Journal Report Yes Yes
Transmission Verification Report Yes Yes
Coverpage Yes (Super) Yes (Super)
Help List Yes Yes
Callback Message No No
Caller ID List Yes No
INTERFACE
External TAD Interface Yes Yes
Missing Link/PC Interface No No
Printer Interface Yes (Parallel) Yes (Parallel)
COLOR
BFT Compatible Yes Yes
Color Fax Mode No No
PRINTER
Color/Mono Color Color
Engine Type Piezo inkjet Piezo inkjet
Resolution (dpi) 1440 x 720, 720 x 720,
360 x 360, 360 x 180 1440 x 720, 720 x 720, 360 x 360, 360 x 180
Speed (ppm) Mono: Up to 7 (360 x 180)
Color: Up to 4 (360 x 180) Mono: Up to 7 (360 x 180) Color: Up to 4 (360 x 180)
Paper Capacity (sheets) 250 250
Optional Paper Capacity (sheets) N/A N/A
Standard Print Language GDI GDI
Emulation Windows GDI, EPSON ESC/P Windows GDI, EPSON ESC/P
Resident Fonts 1 (10, 12, 15 cpi and Ps for each font) 1 (10, 12, 15 cpi and Ps for each font)
Fonts Disk Based 35 35
Paper Handling Size LTR, LGL, A4, B5, A5, A6
CM10, DL, C5, C6, B5 LTR, LGL, A4, B5, A5, A6 CM10, DL, C5, C6, B5

I- 4
(3/4)
MODEL MFC9100C MFC760
Paper Cassette Cut sheet: Min.2.75" (W) x 5.0" (L)
Max. 8.5" (W) x 14.0" (L)
Envelop (BL/C5/CM10/Mona)
Output paper : 100 sheets
Cut sheet: Min.2.75" (W) x 5.0" (L)
Max. 8.5" (W) x 14.0" (L)
Envelop (BL/C5/CM10/Mona)
Output paper : 100 sheets
Printer Driver Windows 3.1/3.11/95/98/NT4.0
with auto installer program Windows 3.1/3.11/95/98/NT4.0
Utility Software Brother Resource Manager Brother Resource Manager
Photo Realistic Print N/A N/A
Ink Cartridge Life (Black) 750 pages (5% duty) 750 pages (5% duty)
Ink Cartridge Life (Color) 400 pages (5% duty for each color) 400 pages (5% duty for each color)
Ink Cartridge Life (Photo) N/A N/A
Interface Type Parallel (IEEE1284) Parallel (IEEE1284)
Bundled Cable Parallel Option
Network Option (Pony) Option (Pony)
COPY
Color Yes Yes
Speed (ppm) Color: 4 ppm, Mono: 5 ppm Color: 4 ppm, Mono: 5 ppm
Multi Copy Yes (Mono: 99 pages/Color: 99 pages) Yes (Mono:99 pages/Color:99 pages)
Sort Yes Yes
Reduction/Enlargement Yes (25% to 400%) Yes (25% to 400%)
Resolution (dpi) Color: Max. 1440 x 720
Min. 360 x 180
Mono: Max. 720 x 720
Min. 360 x 180
Color: Max. 1440 x 720
Min. 360 x 180
Mono: Max. 720 x 720
Min. 360 x 180
SCANNER
Color/Mono Color/Mono Color/Mono
Resolution (dpi) 300 x 300 (Opt.)/1200 x 1200 (Int.) 300 x 300 (Opt.)/1200 x 1200 (Int.)
Gray Scale 256 256
TWAIN Compliant Yes Yes
Formats (Import) TIFF, UniDoc, PCX, DCX TIFF, UniDoc, PCX, DCX
Formats (Export) TIFF, UniDoc, PCX, DCX TIFF, UniDoc, PCX, DCX
OCR Yes (Xerox TextBridge) Yes (Xerox TextBridge)
MESSAGE CENTER / MESSAGE MANAGER
ICM Recording Time No No
Page Memory (Out-of-Paper Reception) 600 pages x 11K 600 pages x 11K
OGM (MC/MC Pro/Paging/F/T) No No
TAD Type No No
Memo/Recording Conversation No No
Fax Forwarding Yes Yes
Fax Retrieval Yes Yes
Paging Yes No
Remote Access Yes Yes
Toll Saver No No
MESSAGE CENTER PRO/MESSAGE
MANAGER PRO
Fax & Voice Mail Box No No
Fax- & Voice-on-Demand No No

I- 5
(4/4)
MODEL MFC9100C MFC760
MESSAGE CENTER (PC MC)
Fax Forwarding No No
Paging No No
ICM Recording Time No No
OGM MC/MC Pro/Paging No No
Fax & Voice Mail Box No No
Fax- & Voice-on-Demand No No
VIDEO CAPTURE
Video Capture Yes Yes
Video Print Yes Yes
Video Format NTSC PAL
BUNDLED SOFTWARE
PC Fax SMSI WordCraft
Viewer Visioneer WordCraft
Printer Driver Brother Brother
Others Auto E-mail printing
Netcentric (PC Internet Fax)
3D Fax Speed (PC Color Fax)
Corel Print & Photo House
Auto E-mail printing
ACCESSORY
Cartridges Black cartridge
Cyan cartridge
Magenta cartridge
Yellow cartridge
Black cartridge
Cyan cartridge
Magenta cartridge
Yellow cartridge
Paper Type BP36CL (720 dpi high-quality coated paper)
BP72CL (720 dpi high-quality coated paper)
BPGLL (Glossy paper)
BPTRL (Transparencies)
BP36CA (360 dpi high-quality coated paper)
BP72CA(720 dpi high-quality coated paper)
BPGLA(Glossy paper)
BPTRA(Transparencies)

CHAPTER II.
INSTALLATION

CHAPTER II. INSTALLATION
CONTENTS
1. INSTALLING THE UPDATE DATA TO THE FACSIMILE EQUIPMENT...............II-1

II - 1
1. INSTALLING THE UPDATE DATA TO THE
FACSIMILE EQUIPMENT
If the program version is updated or the main PCB is replaced, install the update program onto the
flash ROM of the main PCB.
The program installation requires a PC/AT-compatible computer (which is capable of running MS-
DOS or its compatible OS).
Connecting the facsimile equipment to your computer
(1) Make sure that the equipment's power cord is unplugged from a wall socket.
(2) Make sure that your computer is powered off.
(3) Connect the interface cable to the parallel interface port on the left side of the equipment
and secure it with the lock wires.
(4) Connect the other end of the interface cable to the printer port of your computer and secure
it with the two screws.
(5) Power on your computer.
(6) Plug the equipment's power cord into a wall socket.

II - 2
Installing the update data onto the flash ROM of the facsimile equipment
(1) Copy the update data and transfer utility onto the desired directory of the hard disk.
e.g., C:\UPDATE
(2) Click the Start button, point to Programs, and then click MS-DOS Prompt to open an MS-
DOS window.
(3) Type the drive letter where the update data and transfer utility are located. In the above
example, type C: from the command line and press the ENTER key.
Then type CD UPDATE and press the ENTER key.
(4) Check that your computer is connected with the facsimile equipment correctly.
(5) To start the transfer utility transmitting the update data to the flash ROM of the facsimile
equipment, type the following:
ICEN filename /b
Then press the ENTER key.
The equipment beeps and shows the "CONNECTING" on the LCD for one second.
Then, the equipment shows the "DOWNLOADING" on the LCD and starts receiving data
downloaded from the host computer.
During downloading, the equipment beeps intermittently.
Upon completion of the downloading, the equipment beeps continuously.

CHAPTER III.
THEORY OF OPERATION

CHAPTER III. THEORY OF OPERATION
CONTENTS
1. OVERVIEW...........................................................................................................III-1
2. MECHANISMS......................................................................................................III-2
2.1 Scanner Mechanism.....................................................................................III-3
2.2 Ink Jet Printing Mechanism...........................................................................III-5
2.2.1 Paper pick-up, registration, feeding, and ejecting mechanisms..............III-5
2.2.2 Ink jet printing and capping mechanisms...............................................III-6
2.2.3 Purging mechanism..............................................................................III-9
2.2.4 Carriage drive mechanism....................................................................III-11
2.3 Sensors and Actuators..................................................................................III-12
3. CONTROL ELECTRONICS..................................................................................III-15
3.1 Configuration................................................................................................III-15
3.2 Main PCB.....................................................................................................III-16
3.3 NCU PCB.....................................................................................................III-18
3.4 Control Panel PCB........................................................................................III-21
3.5 Power Supply PCB.......................................................................................III-22

III - 1
1. OVERVIEW

III - 2
2. MECHANISMS
The equipment is classified into the following mechanisms:
nSCANNER MECHANISM –ADF mechanism
–Document scanning mechanism
nINK JET PRINTING MECHANISM –Paper pick-up, registration, feeding, and ejecting
mechanisms
–Ink jet printing and head capping mechanisms
–Purging mechanism
–Carriage drive mechanism
n SENSORS AND ACTUATORS

III - 3
2.1 Scanner Mechanism
This mechanism consists of the following:
-document tray ASSY which consists of a document chute and document tray,
-automatic document feeder (ADF) unit which consists of a document feed roller ASSY,
document ejection roller ASSY, ADF motor, and document front and rear sensors, and
-scanner unit which consists of a scanner top cover, CCD unit, CCD drive mechanism, CCD HP
sensor, and scanner base.
For details about the sensors, refer to Section 2.3.

III - 4
This scanner mechanism supports a dual scanning system.
(1) If you set documents with their faces up on the document chute and start the scanning
operation, the ADF motor rotates so that the document feed roller ASSY feeds those
documents into the ADF unit, starting from the bottom sheet to the top, page by page. Each
document curves downwards and turns to the right so as to advance above the CCD unit, and
then it is fed out to the document tray with the document ejection roller ASSY.
This way, documents move above the CCD unit being kept in a stationary position.
(2) If you open the scanner unit, put a sheet of document (or put a bound book opened) on the
glass of the scanner top cover, close the scanner unit, and start the scanning operation, then
the CCD drive mechanism will be driven. That is, the CCD motor rotates and its rotation will
be transmitted via the gear train to the CCD drive belt.
The CCD unit, which is supported and guided by the CCD rail, is secured to the CCD drive
belt. Clockwise and counterclockwise rotations of the CCD motor move the CCD unit to the
right and left, respectively.
In this scanning system, the CCD unit moves horizontally beneath a document being kept in
stationary position.
The CCD unit contains a charge coupled device (CCD) image sensor. The cold-cathode
fluorescent lamp illuminates a document and the reflected light of the scanned image data is
transmitted via the mirrors into the lens which reduces the scanned data so as to form the image
on the CCD.