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.
Trademarks
The Brother logo is a registered trademark of Brother Industries, Ltd.
Brother is a registered trademark of Brother Industries, Ltd.
Multi-Function Link is a registered trademark of Brother International Corporation.
Windows Vista is ei ther a re gistered trademark or a trade mar k of M ic ros oft Co rp orati on i n t he Un ite d
States and other countries. Microso ft, Windows and Windows Server are reg istered trademarks of
Microsoft Corporation in the United States and/or other countries.
Macintosh and TrueType are registered trademarks of Apple Inc.
Nuance, the Nuance logo, PaperPort and ScanSoft are trademarks or registered trademarks of
Nuance Communications, Inc. or its affiliates in the United States and/or other countries.
Presto! PageManager is a registered trademark of NewSoft Technology Corporation.
Microdrive is a trademark of International Business Machines Corporation.
CompactFlash is a registered trademark of SanDisk Corporation.
Memory Stick is a registered trademark of Sony Corporation.
SanDisk is a licensee of the SD and miniSD trademarks.
xD-Picture Card is a trademark of Fujifilm Co. Ltd., Toshiba Corporation and Olympus Optical Co. Ltd.
PictBridge is a trademark.
Memory Stick Pro, Memory Stick Pro Duo, Memory Stick Duo and MagicGate are trademarks of Sony
Corporation.
BROADCOM, SecureEasySetup and the SecureEasySetup logo are trademarks or registered
trademarks of Broadcom Corporation in the United States and/or other countries.
AOSS is a trademark of Buffalo Inc.
Wi-Fi, WPA and WP A 2 are r e gis ter ed trade mar k s and Wi -Fi P ro tec ted Se tup i s a tr ad ema rk of Wi-Fi
Alliance.
FaceFilter Studio is a trademark of Reallusion, Inc.
Each company who se softw are title is mentione d in thi s manual has a S oftware Lic ense Agreeme nt
specific to its proprietary programs.
All other brand and product names mentioned in this manual are trademarks or registered
trademarks of their respective companies.
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Preface
This Service Manual is intended for use by service personnel and details the specifications,
construction, theory of operation, and maintenance for the Brother machines noted on the front
cover. It includes information required for troubleshooting and service--disassembly,
reassembly, and lubrication--so that service personnel will be able to understand equipment
function, repair the equipment in a timely manner and order spare parts as necessary.
To perform appropriate maintenance so that the machine is always in the best possible
condition for the customer, service personnel must adequately understand and apply this
manual.
The table below shows the functional comparison between the models covered by this manual.
ModelMFC5890CNMFC5895CW
RAM64 MB64 MB
LCD (with backlight)3.3-inch wide color3.3-inch wide c olor
T o uc h pa nel-----Wired LAN√√
Wireless LAN (WLAN PCB)---√
PhotoCapture Center√√
PictBridge/USB flash memory drive√√
Movable platen-----Slide tray-----ADF√√
High-yield ink car tr i dg e sensor-----Ink cartridge detection sensors√√
Ink empty sensors√√
Handset (Hook switch PCB)-----Duplex printing-----Backup battery√√
This manual describes the models and their versions destined for major countries. The specifications and
functions are subject to change depending upon each dest ination.
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How this manual is organized
This manual is made up of nine chapters and appendices.
CHAPTER 1PARTS NAMES AND FUNCTIONS
Contains external views and names of components and describes their functions. Information
about the keys on the control panel is included to help you check operation or make
adjustments.
CHAPTER 2SPECIFICATIONS
Lists the specifications of each model, which enables you to make a comparison of different
models.
CHAPTER 3THEORY OF OPERATION
Gives an overview of the scanning and printing mechanisms as well as the sensors, actuators,
and control electronics. It aids in understanding the basic principles of operation as well as
locating defects for troubleshooting.
CHAPTER 4 ERROR INDICATION AND TROUBLESHOOTING
Details error messages and codes that the incorporated self-diagnostic functions display if any
error or malfunction occurs. If any error message appears, refer to this chapter to find which
components should be checked or replaced.
The latter half of this chapter provides sample prob lems that could occ ur in the main sections of
the machine and related troubleshooting procedures. This will help service personnel pinpoint
and repair defective components.
CHAPTER 5HANDLING DATA HELD IN THE MACHINE PRIOR TO
REPAIR
Describes how to handle data held in the machine to be repaired.
At the user s ite, if the m achine ca nnot print FAX data receiv ed and left in the mach ine due to
the printing mechanism defective, the service personnel should instruct the end user to follow
the transfer procedure given in this chapter to transfer the FAX data to another machine before
sending the machine for repair.
At the service site, the service personnel should back up the machine information and user
setting infor mation held in the machin e into an external memor y for restoration after r epair,
using the backup procedure given in this chapter.
CHAPTER 6DISASSEMBLY/REASSEMBLY AND LUBRICATION
Details procedures for disassembling and rea sse mbli ng t he mac h ine tog et her with related notes.
The disassembly order flow provided enables you to see at a glance the quickest way to get to
component(s) involved.
At the start of a disassembly job, you check th e dis assembly order flow that guides you throu gh
a shortcut to the target components.
This chapter also covers screw tightening torques and lubrication points to which the specified
lubricants should be applied during reassembly jobs.
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CHAPTER 7ADJUSTMENTS AND UPDATING OF SETTINGS,
REQUIRED AFTER PARTS REPLACEMENT
Details adjustments and updating of settings, which are required if the head/carriage unit, main
PCB and some other parts have been replaced.
CHAPTER 8CLEANING
Provides cleaning procedures not covered by the User's Guide. Before starting any repair work,
clean the machine as it may solve the problem concerned.
CHAPTER 9MAINTENANCE MODE
Describes the maintenance mode which is exclusively designed for the purpose of checks,
settings and adjustments of the machine using the keys on the control panel.
In the maintenance mode, you can update memory (EEPROM: electrically erasable
programmable read-only memory) contents for optimizing the drive conditions of the head/
carriage unit or the paper feed roller and paper ejection roller in the engine unit, if those units
have been replaced, or for setting the CIS scanner area, for example. You can also customize
the EEPROM according to the shipment destination of the machine concerned. In addition, you
can perform operational checks of the LCD, control panel PCB or sensors, perform a print test,
display the log information or error codes, and modify firmware switches (WSW).
Appendix 1Reading Labels
Shows the location of labels put on some parts and describes the coding information for serial
number and head property data.
Appendix 2Firmware Installation
Provides instructions on how to change firmware stored in the flash ROM on the main PCB or
load firmware to a new main PCB from the host PC.
Appendix 3EEPROM Customizing Codes
Provides instructions on how to set up the EEPROM customizing codes for the various
preferences exclusively designed for each destination. The specified customizing code is stored
in the EEPROM mounted on the main PCB. If the main PCB is replaced, t her efore, you need to
set up the proper customizing code with the machine in the maintenance mode.
Customizing codes customize firmware for individual models, enabling the common firmware
to be used for various models. A list of EEPROM customizing codes comes with the firmware
data provided by Brother Industries.
Appendix 4Firmware Switches (WSW)
Describes the functions of the firmware switches, which can be divided into two groups: one is
for customizing preferences designed for the shipping destination (as described in Appendix 3)
and the other is for modifying preferences that match the machine to the environmental
conditions. Use the latter group if the machine malfunctions due to mismatching.
Appendix 5Wiring Diagrams
Provides the wiring diagrams that help you understand the connections between PCBs.
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Appendix 6Circuit Diagrams
Provides the circuit diagrams of the MJ PCB and power supply PCB.
Appendix 7Deletion of User Setting Information
Provides instructions on how to delete user setting information recorded in the machine.
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SAFETY INFORMATION
WARNING
WARNING indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injuries.
CAUTION
CAUTION
or moderate injuries.
indicates a potentially hazardous situation which, if not avoided, may result in minor
IMPORTANT
IMPORTANT
damage to property or loss of product functionality.
Follow all warnings and instructions marked on the machine.
indicate a potentially hazardous situation which, if not avoided, may result in
Notes tell you how you should respond to a situation that may arise or give tips about
how the operation works with other features.
Electrical Hazard icons alert you to possible electrical shock.
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CHAPTER 1
PARTS NAMES AND FUNCTIONS
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CHAPTER 1 PARTS NAMES AND FUNCTIONS
This chapter contains external views and names of components and describes their functions.
Information about the keys on the control panel is included to help you check operation or make
adjustments.
will be fed into the machine, page by page.
Document cover: Open to place the document
(original) on the scanner glass.
(2)Control panel
Use the keys to operate the machine. The liquid crystal
display (LCD) shows the machine operation status.
(3)Ink cartridge coverOpen to replace ink cartridges.
(4)Media slots for PhotoCapture CenterInsert a memory card here.
(5)Paper tray
Port for PictBridge / USB flash
(6)
memory drive
Telephone line jack
(7)
External telephone line jack
(8)
Load paper here. Paper will be fed into the machine,
sheet by sheet.
Connect a digital camera (with PictBridge) to this
connector using the USB cable.
Insert a USB flash memory drive her e.
Plug in the modular plug on the telephone line here.
Plug in the modular plug o n the external tel ephone line
here.
(9)Scanner cover (Scanner unit)Open to remove jammed paper.
(10)Jam clear coverOpen to remove paper jammed inside the machine.
(11)USB interface connectorConnect the USB cable here.
(12)LAN cable connectorConnect the LAN cable here.
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1.2CONTROL PANEL
10
12
9
786
3
4
5
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1.3COMPONENTS
The machine consists of the following major components:
ADF & document cover
ASSY
Scanner cover
(Scanner unit)
Control panel ASSY
Wire spring
Speaker
Scanner cover damper
Scanner cover
support
MJ side cover
Registration sensor
PCB
PF encoder PCB
Flushing box
MJ PCB
MJ/PS shield unit
Upper cover
Side cover R
Head/carriage unit
Maintenance unit
Ink refill ASSY
Side cover L
Engine unit
Main PCB ASSY
Ink absorber box
Lower cover
Ink cartridge cover
Power supply PCB
Jam clear cover
Inner back cover
WLAN
PCB*
1-6
Media module cover
Front cover
Paper tray ASSY
(COMPONENTS_BHL9_MFC5890CN)
* For wireless LAN-enabled model.
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CHAPTER 2
SPECIFICATIONS
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CHAPTER 2 SPECIFICATIONS
This chapter lists the specifications of each model, which enables you to make a comparison of
different models.