Brother DCP-130C User manual

Confidential
MULTIFUNCTION EQUIPMENT
SERVICE MANUAL
MODELS: DCP750CW
DCP540CN
DCP330C
DCP130C

Confidential
© Copyright Brother 2007, 2006
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.

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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.
Model DCP750CW DCP540CN DCP330C DCP130C
RAM 32 MB 16 MB
LCD 2.5-inch color 2.0-inch color 16 characters x 1 line
ADF --- √--- ---
Wired LAN √√--- ---
Wireless LAN √--- --- ---
PhotoCapture Center √√√√
PictBridge √√√√
Movable platen √√√---
Photo tray √√√---
This manual describes the models and their versions destined for major countries. The specifications and
functions are subject to change depending upon each destination.

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How this manual is organized
This manual is made up of nine chapters and appendices.
CHAPTER 1 PARTS 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 2 SPECIFICATIONS
Lists the specifications of each model, which enables you to make a comparison of different
models.
CHAPTER 3 THEORY 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 problems that could occur in the main sections of the
machine and related troubleshooting procedures. This will help service personnel pinpoint and
repair defective components.
CHAPTER 5 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR
Not applicable.
CHAPTER 6 DISASSEMBLY/REASSEMBLY AND LUBRICATION
Details procedures for disassembling and reassembling the machine together 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 the disassembly order flow that guides you through 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.
CHAPTER 7 ADJUSTMENTS 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 8 CLEANING
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.

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CHAPTER 9 MAINTENANCE 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 1 Reading Labels
Shows the location of labels put on some parts and describes the coding information for serial
number, property data, and manufacturing information.
Appendix 2 Firmware 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 3 EEPROM 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, therefore, 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 4 Firmware 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 5 Wiring Diagrams
Provides the wiring diagrams that help you understand the connections between PCBs.
Appendix 6 Circuit Diagrams
Provides the circuit diagrams of the power supply PCB.

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SAFETY PRECAUTIONS
To use the machine safely
Please refer to these instructions for later reference and before attempting any maintenance.
WARNING
There are high voltage electrodes inside the
machine. Before you clean the machine,
make sure you have unplugged the power
cord from the AC power outlet.
(Safety_1)
Do not handle the plug with wet hands. Doing
this might cause an electrical shock.
(Safety_2)
To prevent injuries, be careful not to put your
hands on the edge of the machine under the
scanner cover.
(Safety_3)
To prevent injuries, be careful not to touch
the area shaded in the illustration.
(Safety_4)
When moving the machine you must lift it
from the base, by placing a hand at eachside
of the unit as shown in the illustration. Do
NOT carry the machine by holding the
scanner cover.
(Safety_5)

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WARNING
This product must be installed near an ACpower outlet that is easily accessible. In case ofemergencies, you
must disconnect the power cord from the AC power outlet in order to shut off power completely.
Caution
Lightning and power surges can damage this product! We recommend that you use a quality surge
protection device on the AC power line, or unplug the cords during a lightning storm.
When lifting up the machine, hold it from the base. Holding the scanning cover (scanner unit) leaves the
machine body inclined, disengaging the scanner cover from the machine body or letting the machine body
fall.
IMPORTANT SAFETY INSTRUCTIONS
When using the machine, basic safety precautions should always be followed to reduce the risk of
fire, electric shock and injury to persons, including the following:
1. Do not use this product near water, for example, near a bathtub, washbowl, kitchen sink or
washing machine, in a wet basement or near a swimming pool.
2. Avoid using this product during a lightning storm. There may be a remote risk of electric shock
from lightning.
3. Do not use this product to report a gas leak in the vicinity of the leak.
4. Use only the power cord provided with the machine.
SAVE THESE INSTRUCTIONS

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Choosing a location
Place the machine on a flat, stable surface that is free ofvibration and shocks, such as a desk. Put the machine
near a standard, grounded AC power outlet. Choose a location where the temperature remains between 50°F
and 95°F (10°C and 35°C).
Caution
Avoid placing the machine in a high-traffic area.
Avoid placing the machine on the carpet.
Do not place the machine near heaters, air conditioners, water, chemicals, or refrigerators.
Do not expose the machine to direct sunlight, excessive heat, moisture, or dust.
Do not connect the machine to electrical outlets controlled by wall switches or automatic timers.
Disruption of power can wipe out information in the machine’s memory.
Do not connect the machine to electrical outlets on the same circuit as large appliances or other equipment
that might disrupt the power supply.
(Location)

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Legal limitations for copying

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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.
CONTENTS
1.1 OUTLINE ................................................................................................................1-1
1.2 CONTROL PANEL...................................................................................................1-5
1.3 COMPONENTS.......................................................................................................1-9

1-1 Confidential
1.1 OUTLINE
Models with ADF
Front view
(1) Control panel
(3) Paper tray
(6) Scanner cover
(Scanner unit) (2) Ink cartridge cover
(4) Media slots for
PhotoCapture Center
(front_view_stepup)
(7) ADF & document
cover ASSY
(5) PictBridge jack
Back view
(10) Jam clear cover
(8) USB interface connector
(back_view_stepup)
(9) LAN cable connector*
*For wired LAN-enabled models

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No. Name Description
(1) Control panel Use the keys to operate the machine. The liquid crystal display
(LCD) shows the machine operation status.
(2) Ink cartridge cover Open to replace ink cartridges.
(3) Paper tray Load paper here. Paper will be fed into the machine, sheet by
sheet.
(4) Media slots for PhotoCapture
Center Insert a memory card here.
(5) PictBridge jack Connect a digital camera to this jack using the USB cable.
(6) Scanner cover (Scanner unit) Open to remove jammed paper.
(7) ADF & document cover ASSY
ADF: Load documents (originals) here. Documents will be fed
into the machine, page by page.
Document cover: Open to place the document (original) on the
scanner glass.
(8) USB interface connector Connect the USB cable here.
(9) LAN cable connector* Connect the LAN cable here.
(10) Jam clear cover Open to remove paper jammed inside the machine.
*For wired LAN-enabled models

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Models without ADF
Front view
(1) Control panel
(3) Paper tray
(6) Scanner cover
(Scanner unit)
(7) Document cover
(2) Ink cartridge cover
(4) Media slots for
PhotoCapture Center
(750_front_view)
(5) PictBridge jack
Back view
(10) Jam clear cover
(8) USB interface connector
(750_back_view)
(9) LAN cable connector*
*For wired LAN-enabled models

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No. Name Description
(1) Control panel Use the keys to operate the machine. The liquid crystal display
(LCD) shows the machine operation status.
(2) Ink cartridge cover Open to replace ink cartridges.
(3) Paper tray Load paper here. Paper will be fed into the machine, sheet by
sheet.
(4) Media slots for PhotoCapture
Center Insert a memory card here.
(5) PictBridge jack Connect a digital camera to this jack using the USB cable.
(6) Scanner cover (Scanner unit) Open to remove jammed paper.
(7) Document cover Open to place the document (original) on the scanner glass.
(8) USB interface connector Connect the USB cable here.
(9) LAN cable connector* Connect the LAN cable here.
(10) Jam clear cover Open to remove paper jammed inside the machine.
*For wired LAN-enabled models

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1.2 CONTROL PANEL
Models with color LCD
1234
5
10 9876
(Color)
(Black)

1-6 Confidential
(Ink)

1-7 Confidential
Models with monochrome LCD
1
2
34
5
10 9876

1-8 Confidential

1-9 Confidential
1.3 COMPONENTS
The machine consists of the following major components:
Document cover
(ADF & document cover
ASSY for models with ADF)
Scanner cover
(Scanner unit)
Scanner cover
damper
Scanner cover
support
Upper cover
Head/carriage unit
Engine unit
PF encoder PCB
Registration sensor
PCB
Flushing box
Lower cover
Power supply PCB
MJ/PS shield box Paper tray ASSY
Ink absorber box
Main PCB ASSY
Ink refill ASSY
Maintenance unit
Front cover
Ink cartridge cover
Media module cover
WLAN PCB
(Only for wireless LAN-enabled
models)
Cover sensor PCB
Control panel
ASSY
Color LCD
unit
Control panel
ASSY
Color LCD type
Monochrome LCD type
(COMPONENTS)
Jam clear cover