Brother HL-3040CN User manual

Confidential
July 2009
SM-PRN073
84E201
(2)
Color Printer
SERVICE MANUAL
MODEL: HL-3040CN/3070CW
Read this manual thoroughly before maintenance work.
Keep this manual in a convenient place for quick and easy reference at all times.

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.
© Copyright Brother 2009
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.
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.

iConfidential
PREFACE
This service manual contains basic information required for after-sales service of the printer
(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 HL-3040CN/3070CW machines.
This manual consists of the following chapters:
CHAPTER 1: SPECIFICATIONS
This chapter lists the specifications of each model.
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 AND ASSEMBLY
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.

ii Confidential
CHAPTER 7: SERVICE FUNCTIONS
Describes the maintenance mode which is exclusively designed for the purpose of checking
the settings and adjustments using the buttons on the control panel.
This chapter also covers not-disclosed-to-users function menus, which activate settings and
functions or reset the parts life.
CHAPTER 8: CIRCUIT DIAGRAMS & WIRING DIAGRAM
Provides the Circuit Diagrams and Wiring Diagram for the connections of the PCBs.
APPENDIX 1: WORKER SWITCH (WSW)
Describes the functions of the worker switches.
APPENDIX 2: DELETION OF USER SETTING INFORMATION etc.
Provides instructions on how to delete user setting information etc. stored 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.
All relevant information in such cases will be supplied in service information bulletins (Technical
Information).
A thorough understanding of this machine, based on information in this service manual and
service information bulletins, 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 the following interface cable.
- A USB cable.
The cable must not be more than 2 meters long.
■EU Directive 2002/96/EC and EN50419
(European Union only)
This equipment is marked with the recycling symbol below. 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.

iv Confidential
For USA and Canada
■Federal Communications Commission (FCC) Declaration of Conformity
(For USA)
declares, that the products
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.
■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.
Responsible Party: Brother International Corporation
100 Somerset Corporate Boulevard
P. O . B o x 6 9 11
Bridgewater, NJ 08807-0911
USA
Telephone: [phone]
Product name: Printer HL-3040CN and HL-3070CW
Model number: HL-30C

vConfidential
SAFETY INFORMATION
■Definitions of Warnings, Cautions, Notes and Memos
The following conventions are used in this manual:
Mark Contents
Warnings tell you what to do to prevent possible personal injury.
Electrical Hazard icons alert you to a possible electrical shock.
Hot Surface icons warn you not to touch machine parts that are hot.
Cautions specify procedures you must follow or avoid to prevent
possible damage to the machine or other objects.
Note Notes tell you useful tips when servicing the machine.
Memo Memo tells you bits of knowledge to help understand the machine.

vi Confidential
■Safety Precautions
Listed below are the various kinds of “WARNING” messages included in this manual.
WARNING
There are high voltage electrodes inside the machine. Before you clean the inside of the
machine or replace parts, make sure that you have turned off the power switch and
unplugged the machine from the AC power outlet.
DO NOT handle the plug with wet hands. Doing this might cause an electrical shock.
The fuser unit becomes extremely hot during operation. Wait until it has cooled down suffi-
ciently before replacing consumable items. DO NOT remove or damage the caution label
located on or around the fuser.

vii Confidential
WARNING
DO NOT use flammable substances, any type of spray or any organic solvent/liquids
contains alcohol or ammonia to clean the inside or outside of the machine. Doing this may
cause a fire or electrical shock.
If the machine becomes hot, blows smoke, or generates obscure odor, immediately turn off
the power switch and unplug the machine from the AC power outlet.
If metal objects, water or other liquids get inside the machine, immediately turn off the
power switch and unplug the machine from the AC power outlet.
This machine is heavy and weighs approximately 19.0 kg (41.9 lb). To prevent injuries
when moving or lifting this machine, make sure to use at least two people. Be careful not to
pinch your fingers when you set the machine back down.
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 machine during a
lightning storm.
Violently closing the top cover without mounting the toner cartridge and the drum unit can
damage this product.

Confidential
CHAPTER 1
SPECIFICATIONS

Confidential
CHAPTER 1
SPECIFICATIONS
This chapter lists the specifications of each model.
CONTENTS
1. COMPONENTS ..........................................................................................1-1
2. SPECIFICATIONS LIST .............................................................................1-2
2.1 General....................................................................................................................... 1-2
2.2 Network Connectivity.................................................................................................. 1-6
2.3 Service Information..................................................................................................... 1-9
2.4 Consumables............................................................................................................ 1-10
2.5 Paper ........................................................................................................................ 1-11
2.5.1 Paper handling ................................................................................................ 1-11
2.5.2 Media specifications ........................................................................................ 1-11
2.5.3 Type and size of paper .................................................................................... 1-12
2.6 Printable Area........................................................................................................... 1-13
2.7 Print Speeds with Various Settings ........................................................................... 1-21

1-1 Confidential
1. COMPONENTS
Fig. 1-1
LED ASSY
LVPS unit
Fuser unit
Paper eject guide ASSY
Side cover R ASSY
High-voltage power
HVPS control
Toner LED
Side frame R
Paper feed
Waste toner sensor
Control panel
Fuser cover
Back cover
Fuser eject drive
ASSY
Belt drive unit
Main PCB ASSY
Engine PCB ASSY
Access cover
Side cover L ASSY
Drum develop
Front cover ASSY
Toner/New sensor
PCB ASSY
Top cover sub ASSY
Side frame L
Paper tray
Top cover arm R
Top cover arm L
LED head control
PCB ASSY
drive unit
PCB ASSY
holder ASSY
Main fan ASSY
LV fan ASSY
PCB ASSY
supply PCB ASSY
unit
cover ASSY
USB direct interface
relay PCB ASSY
Registration sensor
holder ASSY

1-2 Confidential
2. SPECIFICATIONS LIST
2.1 General
*1 The time may change if the machine is performing adjustment of color density or
adjustment of color registration.
Specifications are subject to change without notice.
Model HL-3040CN HL-3070CW
Print method Electrophotographic LED color printer
Resolution 2,400 dpi
(600 (main
scanning) x
2,400 (sub
scanning))
quality
Windows Server® 2008,Windows Vista®, Windows Server®
2003 x64 Edition, Windows®XP Professional x64 Edition,
Windows Server®2003, Windows®XP Home Edition/
Professional, Windows®2000, Mac OS®X 10.3.9 or greater
600 (main
scanning) x
600 (sub
scanning))
dpi
Windows Server®2008,
Windows Vista®, Windows
Server®2003 x64 Edition,
Windows®XP Professional
x64 Edition, Windows
Server®2003, Windows®XP
Home Edition/Professional,
Windows®2000, Mac OS®X
10.3.9 or greater, Linux
Windows Server®2008,
Windows Vista®, Windows
Server®2003 x64 Edition,
Windows®XP Professional
x64 Edition, Windows
Server®2003, Windows®XP
Home Edition/Professional,
Windows®2000, Mac OS®X
10.3.9 or greater, DOS, Linux
Print mode Normal printing mode
Economy printing mode (Toner saving mode)
Print Speed One side Monochrome/Full Color:
Up to 16/16 ppm (A4 size), Up to 17/17 ppm (Letter size)
* When loading A4 or Letter-size paper from the paper tray.
Duplex N/A
Warm-up time*1 From Sleep Mode: Less than 27 seconds
From Power OFF →ON: Less than 37 seconds
First print time*1 Monochrome: Less than 15 seconds
Full Color: Less than 16 seconds
CPU 300 MHz
Memory Standard 32 MB 64 MB
Option 1 DIMM slot; expandable up
to 544 MB
1 DIMM slot; expandable up
to 576 MB
Interface Hi-Speed USB 2.0, Ethernet
10/100 BASE-TX
Hi-Speed USB 2.0, Ethernet
10/100 BASE-TX, Wireless
LAN IEEE 802.11 b/g
Note:
Print speed varies depending on the paper size or media type. For details, refer to
“2.7 Print Speeds with Various Settings” in this chapter.

1-3 Confidential
Specifications are subject to change without notice.
Model HL-3040CN HL-3070CW
Power
consumption
Printing
Average 480 W at 25 °C (77 °F)
Ready Average 70 W at 25 °C (77 °F)
Sleep Average 8 W at 25 °C (77 °F) Average 10 W at 25 °C (77 °F)
Noise level Sound
Pressure
Printing: 53 dB (A)
Ready: 30 dB (A)
Sound power Monochrome printing: LWAd = 6.34 Bell (A)
Color printing: LWAd = 6.29 Bell (A)
Ready: LWAd = 3.64 Bell (A)
Temperature Operating: 10 to 32.5 °C (50 to 90.5 °F)
Non operating: 0 to 40 °C (38 to 104 °F)
Storage: -20 to 40 °C (-4 to 104 °F)
Humidity Operating: 20 to 80 % (non condensing)
Storage: 10 to 85 % (non condensing)
Dimensions (W × D × H) 409 x 466 x 250 mm (16.1 x 18.3 x 9.8 inch)
Weight Approximately 19.0 kg (41.9 lb)
including the drum unit, toner cartridge, belt unit and waste
toner box.

1-4 Confidential
<PC Software>
<Direct Print feature>
*1 The data including JBIG2 image files, JPEG2000 image files and transparency files are not
supported.
Specifications are subject to change without notice.
Model HL-3040CN HL-3070CW
Printer driver Windows®Host-Based Driver for Windows Server®2008, Windows
Vista®, Windows Server®2003 x64 Edition, Windows®XP
Professional x64 Edition, Windows Server®2003, Windows®
XP Home Edition/Professional, Windows®2000 Professional
N/A BR-Script 3 (PPD file for
Windows Server
®
2008,
Windows Vista
®
, Windows
Server
®
2003 x64 Edition,
Windows
®
XP Professional
x64 Edition, Windows Server
®
2003, Windows
®
XP Home
Edition/Professional,
Windows
®
2000 Professional)
Macintosh®Macintosh Printer Driver for Mac OS®X 10.3.9 or greater
N/A BR-Script 3 (PPD file for Mac
OS®X 10.3.9 or greater)
Linux Linux printer driver for CUPS printing system
(x86, x64 environment)
Linux printer driver for LPD/LPRng printing system
(x86, x64 environment)
Model HL-3040CN HL-3070CW
Direct Print N/A PDF version1.7*1, JPEG, Exif+JPEG,
PRN (created by HL-3040CN or
HL- 3070CW printer driver), TIFF
(scanned by all Brother MFC or DCP
models), PostScript®3™ (created by
HL-3070CW BRScript3 printer
driver), XPS version 1.0

1-5 Confidential
<System requirements>
Specifications are subject to change without notice.
Computer Platform & Operating
System Version Processor Speed Minimum RAM
Recom-
mended
RAM
Available
Hard
Disk
Space
Windows®Windows Server®
2008
Intel®Pentium®4 or
equivalent
64-bit (Intel®64 or
AMD64)
supported CPU
512 MB 2 GB 50 MB
Windows Vista®512 MB 1 GB 50 MB
Windows Server®
2003 x64 Edition
64-bit (Intel®64 or
AMD64) supported CPU
256 MB 512MB 50 MB
Windows®XP
Professional x64
Edition
Windows Server®
2003
Intel®Pentium®III or
equivalent
256 MB 512MB 50 MB
Windows®XP
Home Edition
Intel®Pentium®II or
equivalent
128 MB 256 MB 50 MB
Windows®XP
Professional
Windows®2000
Professional
64 MB 256 MB 50 MB
Macintosh®Mac OS®X
10.4.4 or greater
Power PC G4/G5,
Intel®Core™ Processor
512 MB 1 GB 80 MB
Mac OS®X
10.3.9 - 10.4.3
Power PC G4/G5,
Power PC G3 350MHz
128 MB 256 MB

1-6 Confidential
2.2 Network Connectivity
<Wired network>
*1 If you want to use the IPv6 protocol, visit http://solutions.brother.com/ for more information.
*2 BRAdmin Professional and Web BRAdmin are available as a download from
http://solutions.brother.com/
Specifications are subject to change without notice.
Network node type NC-6700h
Operating system
support
Windows Server®2008, Windows Vista®, Windows Server®2003
x64 Edition, Windows®XP Professional x64 Edition, Windows
Server®2003, Windows®XP Home Edition/Professional, Windows®
2000 Professional, Mac OS®X 10.3.9 or greater
Protocol support TCP/IP: IPv4 ARP, RARP, BOOTP, DHCP, APIPA (Auto IP),
WINS/NetBIOS name resolution, DNS resolver,
mDNS, LLMNR responder, LPR/LPD, Custom
Raw Port/Port9100, IPP/IPPS, FTP Server,
TELNET Server, HTTP/HTTPS server, TFTP client
and server, SMTP Client, APOP, POP before
SMTP, SMTP-AUTH, SNMPv1/v2c/v3, ICMP, LLTD
responder, Web Services Print, SSL/TLS, CIFS
client, SNTP, FTP client
TCP/IP: IPv6*1 (Turned off as default) NDP, RA, DNS resolver,
mDNS, LLMNR responder, LPR/LPD, Custom
Raw Port/Port9100, IPP/IPPS, FTP Server,
TELNET Server, HTTP/HTTPS server, TFTP client
and server, SMTP Client, APOP, POP before
SMTP, SMTP-AUTH, SNMPv1/v2c/v3, ICMPv6,
LLTD responder, Web Services Print, SSL/TLS,
CIFS client, SNTP, FTP client
Network type Ethernet 10/100 BASE-TX Auto Negotiation
Network printing Windows Server®2008, Windows Vista®, Windows Server®2003,
Windows®XP and Windows®2000 TCP/IP printing
Mac OS®X 10.3.9 or greater printing
Management utility BRAdmin
Professional 3*2
Windows Server®2008, Windows Vista®,
Windows Server®2003 x64 Edition, Windows®XP
Professional x64 Edition, Windows Server®2003,
Windows®XP Home Edition/Professional Edition,
Windows®2000 Professional
Web
BRAdmin*2
Windows Server®2008, Windows Vista®,
Windows Server®2003 x64 Edition, Windows®XP
Professional x64 Edition, Windows Server®2003,
Windows®XP Home Edition/Professional Edition,
Windows®2000 Professional
Web Based
Management
Microsoft Internet Explorer 6.0 (or greater),
Firefox 1.0 (or greater) for Windows, and Safari 1.2
(or greater) for Macintosh are recommended.
BRAdmin Light Windows Server®2008, Windows Vista®,
Windows Server®2003 x64 Edition, Windows®XP
Professional x64 Edition, Windows Server®2003,
Windows®XP Home Edition/Professional Edition,
Windows®2000 Professional
Mac OS®X 10.3.9 or greater

1-7 Confidential
<Wireless network> (HL-3070CW only)
*3 If you want to use the IPv6 protocol, visit http://solutions.brother.com/ for more information.
Specifications are subject to change without notice.
Network node type NC-7500w
Operating system
support
Windows Server®2008, Windows Vista®, Windows Server®2003
x64 Edition, Windows®XP Professional x64 Edition, Windows
Server®2003, Windows®XP Home Edition/Professional, Windows®
2000 Professional, Mac OS®X 10.3.9 or greater
Protocol support TCP/IP: IPv4
ARP, RARP, BOOTP, DHCP, APIPA (Auto IP),
WINS/NetBIOS name resolution, DNS resolver,
mDNS, LLMNR responder, LPR/LPD, Custom
Raw Port/Port9100, IPP/IPPS, FTP Server,
TELNET Server, HTTP/HTTPS server, TFTP
client and server, SMTP Client, APOP, POP before
SMTP, SMTP-AUTH, SNMPv1/v2c/v3, ICMP,
LLTD responder, Web Services Print, SSL/TLS
TCP/IP: IPv6*3 NDP, RA, DNS resolver, mDNS, LLMNR
responder, LPR/LPD, Custom Raw Port/
Port9100, IPP/IPPS, FTP Server, TELNET
Server, HTTP/HTTPS server, TFTP client and
server, SMTP Client, APOP, POP before SMTP,
SMTP-AUTH, SNMPv1/v2c/v3, ICMPv6, LLTD
responder, Web Services Print, SSL/TLS
Network type IEEE 802.11 b/g wireless
Frequency 2412 - 2472 MHz
RF channels US/Canada 1 - 11
Japan 802.11 b: 1 - 14, 802.11 g: 1 - 13
Others 1 - 13
Communication mode Infrastructure, Ad-hoc (802.11 b only)
Data rate 802.11 b 11/5.5/2/1 Mbps
802.11 g 54/48/36/24/18/12/11/9/6/5.5/2/1 Mbps
Link distance 70 m (233 ft.) at lowest data rate (The distance rate will vary upon
environment and other equipment location.)
Network security SSID/ESSID, WEP 64/128bit, WPA-PSK (TKIP/AES),
WPA2-PSK (AES), LEAP (CKIP), EAP-FAST (TKIP/AES)
Network printing Windows Vista®, Windows Server®2003, Windows®XP and
Windows®2000 TCP/IP printing
Mac OS®X 10.3.9 or greater printing

1-8 Confidential
*4 BRAdmin Professional and Web BRAdmin are available as a download from
http://solutions.brother.com/
Specifications are subject to change without notice.
Management utility BRAdmin
Professional 3*4
Windows Server®2008, Windows Vista®,
Windows Server®2003 x64 Edition, Windows®
XP Professional x64 Edition, Windows Server®
2003, Windows®XP Home Edition/Professional
Edition, Windows®2000 Professional
Web
BRAdmin*4
Windows Server®2008, Windows Vista®,
Windows Server®2003 x64 Edition, Windows®
XP Professional x64 Edition, Windows Server®
2003, Windows®XP Home Edition/Professional
Edition, Windows®2000 Professional
Web Based
Management
Microsoft Internet Explorer 6.0 (or greater),
Firefox 1.0 (or greater) for Windows, and Safari
1.2 (or greater) for Macintosh are recommended.
BRAdmin Light Windows Server®2008, Windows Vista®,
Windows Server®2003 x64 Edition, Windows®
XP Professional x64 Edition, Windows Server®
2003, Windows®XP Home Edition/Professional
Edition, Windows®2000 Professional
Mac OS®X 10.3.9 or greater

1-9 Confidential
2.3 Service Information
These are key service information to maintain the product.
- Machine life: approximately 100,000 pages or 5 years
- MTBF (Meantime between failure): 4,000 hours
- MTTR (Meantime to repair): 30 minutes
- Maximum monthly volume: 25,000 pages
- Periodical maintenance parts:
* As for replacement of the periodical maintenance parts, refer to “PERIODICAL
MAINTENANCE” in Chapter 4.
Specifications are subject to change without notice.
Part Approximate life (page)
Fuser unit 50,000
Paper feeding kit 50,000