Brother HL-7050N, HL-7050 Service Manual

BBrrootthheerr LLaasseerr PPrriinntteer

SSEER

RVVII

CEE

ALL

Read this manual thoroughly before maintenance work.

Keep this manual in a convenient place for quick and easy reference at all times.

Sep. 2002 SM-PRN031

in writing from the publisher. Specifications are subject to change without notice.

Trademarks: The brother logo is a registered trademark of Brother Industries, Ltd. Apple, the Apple Logo, and Macintosh are trademarks, registered in the United States and

other countries, and True Type is a trademark of Apple computer, Inc. Epson is a registered trademark and FX-80 and FX-850 are trademarks of Seiko Epson

Corporation. Hewlett Packard is a registered trademark and HP Laser Jet is a trademark of Hewlett Packard

Company. IBM, IBM PC and Proprinter are registered trademarks of International Business Machines

Corporation. Microsoft and MS-DOS are registered trademarks of Microsoft Corporation. Windows is a registered trademark of Microsoft Corporation in the U.S. and other countries.

HL-7050 SERVICE MANUAL

PREFACE

This service manual contains basic information required for after-sales service of the laser printer (hereinafter referred to as "this machine" or "the printer"). This information is vital to the service technician to maintain the high printing quality and performance of the printer.

This service manual covers the HL-7050/7050N printers.

This manual consists of the following chapters:

CHAPTER 1: GENERAL

Features, specifications, etc.

CHAPTER 2: INSTALLATION AND BASIC OPERATION

Installation conditions, Installation procedures, basic operation of the printer etc.

CHAPTER 3: THEORY OF OPERATION

Basic operation of the mechanical system, the electrical system and the electrical circuits and their timing information.

CHAPTER 4: DISASSEMBLY AND RE-ASSEMBLY

Procedures for disassembling and re-assembling the mechanical system.

CHAPTER 5: MAINTENANCE

Periodical replacements parts, consumable parts, etc.

CHAPTER 6: TROUBLESHOOTING

Reference values and adjustments, troubleshooting image defects, troubleshooting malfunctions, etc.

CHAPTER 7: HIDDEN FUNCTIONS

Professional Menu mode and Service Menu mode, etc.

APPENDICES: Serial No. descriptions, page counter, Diameter / circumference of rollers,

Connection diagrams, PCB circuit diagrams, etc.

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 printer, 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.

TABLE OF CONTENTS

REGULATION.............................................................................................viii

SAFETY INFORMATION...............................................................................x

CHAPTER 1 GENERAL .......................................................................... 1-1

1. FEATURES .............................................................................................................1-1

2. OVERVIEW .............................................................................................................1-3

3. SPECIFICATIONS...................................................................................................1-4

3.1 Printing ............................................................................................................................. 1-4

3.2 Functions.......................................................................................................................... 1-5

3.3 Options............................................................................................................................. 1-5

3.4 Electrical and Mechanical ................................................................................................ 1-6

3.5 Network ............................................................................................................................ 1-7

3.6 Paper................................................................................................................................ 1-8

3.6.1 Feedable paper................................................................................................................... 1-8

3.6.2 Print delivery ..................................................................................................................... 1-11

3.7 Printable Area................................................................................................................. 1-13

3.7.1 PCL5e/EPSON/IBM emulation.......................................................................................... 1-13

3.7.2 PCL6/BR-Script3 emulation.............................................................................................. 1-16

CHAPTER 2 INSTALLATION AND BASIC OPERATION ...................... 2-1

1. CONDITIONS REQUIRED FOR INSTALLATION....................................................2-1

1.1 Power Supply ................................................................................................................... 2-1

1.2 Environment ..................................................................................................................... 2-1

1.3 System Requirements for Brother Printer Solution for Windows

2. UNPACKING ...........................................................................................................2-3

3. INSTALL THE PRINTER .........................................................................................2-4

3.1 For All Users .................................................................................................................... 2-4

3.1.1 Remove the protective parts............................................................................................... 2-5

3.1.2 Install the drum unit assembly ............................................................................................ 2-5

3.1.3 Load paper into the paper tray............................................................................................ 2-6

3.1.4 Print a test page.................................................................................................................. 2-8

3.2 For Parallel Interface Cable Users (for Windows® users only)......................................... 2-8

3.3 For USB Interface Cable Users (for Windows

3.3.1 Install the driver & connect the printer to your PC ............................................................ 2-11

3.3.2 Setting Your Printer as the Default Printer........................................................................ 2-12

3.3.3 Installing the Driver (For Mac OS 8.6 to 9.2 Users).......................................................... 2-12

3.3.4 Setting Your Printer as the Default Printer (For Mac OS 8.6 to 9.2 Users)....................... 2-13

3.3.5 Connecting the Printer to Your Macintosh & Installing the BR-Script PPD File ................ 2-13

3.4 For Network Users ......................................................................................................... 2-13

3.4.1 For the administrator......................................................................................................... 2-14

3.4.2 Installing the driver for Windows

users only.................................................................... 2-15

users only) ........................................... 2-11

.................................... 2-2

HL-2460 SERVICE MANUAL

3.4.3 Installing the driver for Macintosh® users only.................................................................. 2-17

4. PRINTING METHODS...........................................................................................2-19

4.1 Printing from the Paper Tray (Face down printing) ........................................................ 2-19

4.2 Printing from the MP Tray .............................................................................................. 2-20

4.3 Printing on Envelopes (Face up printing) ....................................................................... 2-22

4.4 Printing on Label, Transparency, etc. ............................................................................ 2-26

4.5 Printing to the Face up Output Tray (Face up printing).................................................. 2-30

4.6 Manual Feed ..................................................................................................................2-30

5. CONTROL PANEL OPERATION...........................................................................2-31

5.1 Data LED Indications ..................................................................................................... 2-31

5.2 Panel Buttons Functions ................................................................................................ 2-32

5.2.1 Go button .......................................................................................................................... 2-32

5.2.2 Job Cancel button............................................................................................................. 2-32

5.2.3 Reprint button ...................................................................................................................2-33

5.2.4 + & - button ....................................................................................................................... 2-37

5.2.5 Set button ......................................................................................................................... 2-37

5.2.6 Back button....................................................................................................................... 2-37

5.3 LCD Display ................................................................................................................... 2-38

5.3.1 Backlights ......................................................................................................................... 2-38

5.3.2 LCD message ................................................................................................................... 2-38

5.4 How to Use the Control Panel........................................................................................ 2-39

5.5 Control Panel Setting Menu ........................................................................................... 2-41

5.5.1 Information........................................................................................................................ 2-42

5.5.2 Paper ................................................................................................................................2-43

5.5.3 Quality............................................................................................................................... 2-43

5.5.4 Setup ................................................................................................................................ 2-44

5.5.5 Print menu......................................................................................................................... 2-46

5.5.6 Network............................................................................................................................. 2-50

5.5.7 Interface............................................................................................................................ 2-51

5.5.8 Reset menu....................................................................................................................... 2-52

5.5.9 Set date and time.............................................................................................................. 2-53

5.5.10 Set IP address .................................................................................................................. 2-54

5.5.11 About emulation modes .................................................................................................... 2-55

5.5.12 List of factory settings ....................................................................................................... 2-56

5.6 Other Control Features .................................................................................................. 2-62

5.6.1 Sleep mode....................................................................................................................... 2-62

5.6.2 Inspection mode ............................................................................................................... 2-62

6. NETWORK BOARD OPERATION.........................................................................2-63

6.1 Installing the Network Board .......................................................................................... 2-63

6.2 Functions........................................................................................................................ 2-65

6.2.1 LED functions ................................................................................................................... 2-65

6.2.2 Factory default setting ...................................................................................................... 2-65

CHAPTER 3 THEORY OF OPERATION ................................................ 3-1

1. ELECTRONICS.......................................................................................................3-1

1.1 General Block Diagram .................................................................................................... 3-1

1.2 Main PCB ......................................................................................................................... 3-2

iii

TABLE OF CONTENTS

1.2.1 Outline ................................................................................................................................ 3-2

1.2.2 Circuit.................................................................................................................................. 3-4

1.3 Engine PCB...................................................................................................................... 3-6

1.4 Power Supply ................................................................................................................... 3-6

1.4.1 Low-voltage power supply ..................................................................................................3-6

1.4.2 High-voltage power supply ................................................................................................. 3-8

2. MECHANICS...........................................................................................................3-9

2.1 Overview of Printing Mechanism...................................................................................... 3-9

2.2 Paper Transfer ...............................................................................................................3-11

2.2.1 Paper supply..................................................................................................................... 3-11

2.2.2 Paper registration ............................................................................................................. 3-11

2.2.3 Paper eject........................................................................................................................ 3-12

2.3 Sensors .......................................................................................................................... 3-13

2.3.1 Cover open sensor ........................................................................................................... 3-13

2.3.2 Multi paper tray paper empty sensor ................................................................................ 3-13

2.3.3 Tray paper empty sensor.................................................................................................. 3-14

2.3.4 Face up open sensor / Fuser exit sensor ......................................................................... 3-14

2.3.5 Full stack sensor............................................................................................................... 3-15

2.3.6 Eject sensor ...................................................................................................................... 3-15

2.3.7 Paper size sensor / Tray ID sensor .................................................................................. 3-16

2.3.8 Toner sensors................................................................................................................... 3-16

2.4 Drum Unit ....................................................................................................................... 3-17

2.4.1 Photosensitive drum ......................................................................................................... 3-17

2.4.2 Primary charging roller...................................................................................................... 3-17

2.4.3 Transfer roller ................................................................................................................... 3-17

2.4.4 Cleaner .............................................................................................................................3-17

2.5 Toner cartridge............................................................................................................... 3-17

2.6 Print Process.................................................................................................................. 3-18

2.6.1 Charging ...........................................................................................................................3-18

2.6.2 Exposure stage................................................................................................................. 3-18

2.6.3 Developing........................................................................................................................ 3-20

2.6.4 Transfer ............................................................................................................................ 3-20

2.6.5 Cleaning............................................................................................................................ 3-21

2.6.6 Fixing stage ...................................................................................................................... 3-21

CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY.............................. 4-1

1. SAFETY PRECAUTIONS........................................................................................4-1

2. DISASSEMBLY FLOW ............................................................................................4-6

3. DISASSEMBLY PROCEDURE................................................................................4-7

3.1 AC Cord ........................................................................................................................... 4-7

3.2 Drum unit assembly ......................................................................................................... 4-7

3.3 Paper Tray ....................................................................................................................... 4-8

3.4 MP Tray.......................................................................................................................... 4-14

3.5 FU Protection Cover....................................................................................................... 4-16

3.6 Side Cover L / R.............................................................................................................4-17

3.7 Switch Panel................................................................................................................... 4-19

3.8 Open Cover / Top Cover................................................................................................ 4-21

HL-2460 SERVICE MANUAL

3.9 Back Cover ASSY .......................................................................................................... 4-26

3.10 Fixing Unit ...................................................................................................................... 4-28

3.11 Paper Eject..................................................................................................................... 4-37

3.12 Laser Unit....................................................................................................................... 4-40

3.13 Front Cover 1 / Front Cover 2 ....................................................................................... 4-41

3.14 MP Tray Unit .................................................................................................................. 4-43

3.15 Fan Motor 80 .................................................................................................................. 4-48

3.16 Main Motor ASSY........................................................................................................... 4-50

3.17 Feeding Motor ASSY A/B............................................................................................... 4-51

3.18 Drive Unit ....................................................................................................................... 4-52

3.19 Electromagnetic Clutch Regist ....................................................................................... 4-55

3.20 Main PCB ....................................................................................................................... 4-56

3.21 Engine PCB.................................................................................................................... 4-57

3.22 Base Plate ...................................................................................................................... 4-57

3.23 Low-voltage Power Supply PCB ASSY / High-voltage Power Supply PCB ASSY ........ 4-58

3.24 Front Guide ASSY.......................................................................................................... 4-60

3.25 Transfer Base ASSY ...................................................................................................... 4-61

3.26 Paper Feed .................................................................................................................... 4-67

3.27 Size SW PCB .................................................................................................................4-75

3.28 Fan Motor 60 .................................................................................................................. 4-77

3.29 Ejection Gear Unit ..........................................................................................................4-78

4. LUBRICATION ......................................................................................................4-79

5. PACKING ..............................................................................................................4-84

CHAPTER 5 PERIODIC MAINTENANCE............................................... 5-1

1. CONSUMABLE PARTS...........................................................................................5-1

1.1 Drum Unit ......................................................................................................................... 5-1

1.2 Toner Cartridge ................................................................................................................ 5-3

2. PERIODICAL REPLACEMENT PARTS...................................................................5-6

3. PERIODICAL CLEANING........................................................................................5-7

3.1 Cleaning the Printer Exterior ............................................................................................ 5-7

3.2 Cleaning the Printer Interior ............................................................................................. 5-8

4. MTBF / MTTR..........................................................................................................5-9

CHAPTER 6 TROUBLESHOOTING ....................................................... 6-1

1. INTRODUCTION .....................................................................................................6-1

1.1 Initial Check...................................................................................................................... 6-1

1.2 Warnings for Maintenance Work...................................................................................... 6-2

1.3 Identify the Problem .........................................................................................................6-3

2. OPERATOR CALLS & SERVICE CALLS ................................................................6-4

2.1 Operator Call Messages .................................................................................................. 6-4

2.2 Service Call Messages..................................................................................................... 6-7

3. PAPER PROBLEMS..............................................................................................6-11

TABLE OF CONTENTS

3.1 Paper Loading Problems................................................................................................ 6-11

3.2 Paper Jams .................................................................................................................... 6-12

3.2.1 Clearing jammed paper..................................................................................................... 6-14

3.2.2 Countermeasures for paper jams ..................................................................................... 6-22

3.3 Paper Feeding Problems ............................................................................................... 6-23

4. SOFTWARE SETTING PROBLEMS .....................................................................6-25

5. MALFUNCTIONS ..................................................................................................6-28

6. IMAGE DEFECTS .................................................................................................6-34

6.1 Image Defect Examples ................................................................................................. 6-34

6.2 Troubleshooting Image Defect ....................................................................................... 6-35

6.3 Location of Grounding Contacts..................................................................................... 6-54

6.3.1 Drum unit.............................................................................................................. 6-54

6.3.2 Printer body & Paper tray......................................................................................6.54

7. INCORRECT PRINTOUT ......................................................................................6-55

8. NETWORK PROBLEM..........................................................................................6-58

8.1 Installation Problem........................................................................................................ 6-58

8.2 Intermittent Problem....................................................................................................... 6-59

8.3 TCP/IP Troubleshooting................................................................................................. 6-60

8.4 UNIX Troubleshooting.................................................................................................... 6-60

8.5 Windows NT/LAN Server (TCP/IP) Troubleshooting ..................................................... 6-61

8.6 Windows 95/98/Me Peer to Peer Print (LPR) Troubleshooting...................................... 6-61

8.7 Windows 95/98/Me Peer to Peer (HP JetAdmin Compatible Method) Troubleshooting .......... 6-62

8.8 Windows 95/98/Me/NT 4.0/2000/XP Peer to Peer Print (NetBIOS) Troubleshooting .... 6-62

8.9 Internet Print (TCP/IP) Troubleshooting......................................................................... 6-62

8.10 Windows 95/98/Me/2000/XP IPP Troubleshooting ........................................................ 6-63

8.11 Novell Netware Troubleshooting .................................................................................... 6-63

8.12 AppleTalk Troubleshooting ............................................................................................ 6-64

8.13 Apple TCP/IP Printing (System 8.6 or later)................................................................... 6-64

8.14 DLC/LLC Troubleshooting.............................................................................................. 6-64

8.15 LAT Troubleshooting...................................................................................................... 6-64

8.16 Banyan VINES Troubleshooting .................................................................................... 6-66

8.17 Web Browser Troubleshooting (TCP/IP)........................................................................ 6-66

9. INSPECTION MODE .............................................................................................6-67

9.1 Before the Operation...................................................................................................... 6-67

9.2 Line Inspection Mode Procedure ................................................................................... 6-67

CHAPTER 7 HIDDEN FUNCTIONS ........................................................ 7-1

1. ENTERING HIDDEN FUNCTION MENU MODES ...................................................7-1

2. PROFESSIONAL MENU MODE..............................................................................7-2

2.1 Enabling and Disabling Professional Menu Mode............................................................ 7-2

2.2 Function Table ................................................................................................................. 7-3

3. SERVICE MENU MODE..........................................................................................7-9

3.1 Entering the Service Menu Mode..................................................................................... 7-9

3.2 Function Table ................................................................................................................. 7-9

HL-2460 SERVICE MANUAL

4. OTHER HIDDEN FUNCTION MENUS ..................................................................7-13

4.1 Hidden Function Menus Enabled by Pressing Switch(es) When Turning the Machine on ....

....................................................................................................................................... 7-13

4.2 Parts life Reset Function ................................................................................................ 7-14

APPENDICES

1. CONNECTION DIAGRAM, HL-7050 ...................................................................... A-1

2. MAIN PCB CIRCUIT DIAGRAM, HL-7050 (1/9) ..................................................... A-2

3. MAIN PCB CIRCUIT DIAGRAM, HL-7050 (2/9) ..................................................... A-3

4. MAIN PCB CIRCUIT DIAGRAM, HL-7050 (3/9) ..................................................... A-4

5. MAIN PCB CIRCUIT DIAGRAM, HL-7050 (4/9) ..................................................... A-5

6. MAIN PCB CIRCUIT DIAGRAM, HL-7050 (5/9) ..................................................... A-6

7. MAIN PCB CIRCUIT DIAGRAM, HL-7050 (6/9) ..................................................... A-7

8. MAIN PCB CIRCUIT DIAGRAM, HL-7050 (7/9) ..................................................... A-8

9. MAIN PCB CIRCUIT DIAGRAM, HL-7050 (8/9) ..................................................... A-9

10. MAIN PCB CIRCUIT DIAGRAM, HL-7050 (9/9) ................................................... A-10

11. ENGINE PCB CIRCUIT DIAGRAM, HL-7050 (1/3)............................................... A-11

12. ENGINE PCB CIRCUIT DIAGRAM, HL-7050 (2/3)............................................... A-12

13. ENGINE PCB CIRCUIT DIAGRAM, HL-7050 (3/3)............................................... A-13

14. LOW-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM (100V),

HL-7050 (1/2) ...................................................................................................... A-14

15. LOW-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM (200V),

HL7050 (2/2)......................................................................................................... A-15

16. SERIAL NO. DESCRIPTIONS.............................................................................. A-16

17. DIAMETER / CIRCUMFERENCE OF ROLLERS.................................................. A-18

18. PRINT SPEEDS WITH VARIOUS SETTINGS...................................................... A-19

19. HOW TO KNOW PAGE COUNTER & PARTS LIFE............................................. A-21

20. HOW TO USE THE SELF-DIAGNOSTICS TOOLS.............................................. A-23

21. NVRAM DEFAULT VALUE................................................................................... A-27

22. PAPER TRAY INFORMATION (FOR EUROPE ONLY)........................................ A-28

23. GUIDELINES FOR LEAD FREE SOLDER ........................................................... A-29

24. TONER CARTRIDGE WEIGHT INFORMATION .................................................. A-32

INDEX

vii

REGULATION

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 housing and external covers. The laser beam cannot escape form the machine during any phase of user operation.

FDA REGULATIONS (110 - 120V MODEL ONLY)

The US Food and Drug Administration (FDA) has implemented regulations for laser products manufactured on and after August 2, 1976. Compliance is mandatory for products marketed in the United States. One of the following labels on the back of the printer indicates compliance with the FDA regulations and must be attached to laser products marketed in the United States.

The label for Japanese manufactured products

MANUFACTURED: K BROTHER INDUSTRIES, LTD.

15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. This product complies with FDA radiation performance standards, 21 CFR Subchapter J.

The label for Chinese manufactured products

MANUFACTURED: C BROTHER Corporation (Asia) Ltd. Shenzen Buji Nan Ling Factory

Gold Garden Ind., Nan Ling Village, Buji, Rong Gang, Shenzen, CHINA This product complies with FDA radiation performance standards, 21 CFR Subchapter J.

Caution

Use of controls, adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure.

viii

HL-2460 SERVICE MANUAL

IEC 825 (220-240V MODEL ONLY)

This printer is a Class 1 laser product as defined in IEC 825 specifications. The label shown below is attached in countries where required.

CLASS 1LASER PRODUCT APPAREIL Å LASER DE CLASSE 1 LASER KLASSE 1 PRODUKT

This printer has a laser diode which emits invisible laser radiation in the Laser Unit. The Laser Unit should not be opened without disconnecting the two connectors connected with the AC power supply and laser unit. Since the variable resistor in the laser unit is adjusted in accordance with the standards, never touch it.

Caution

Use of controls, adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure.

For Finland and Sweden LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT

Varoitus! Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle.

Varning  Om apparaten används på annat sätt än i denna Bruksanvisning specificerats, kan användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laserklass

SAFETY INFORMATION

CAUTION FOR LASER PRODUCT (WARNHINWEIS FUR LASER DRUCKER)

CAUTION: When the machine during servicing is operated with the cover open, the

CAUTION: In case of any trouble with the laser unit, replace the laser unit itself. To

ACHTUNG: Im Falle von Störungen der Lasereinheit muß diese ersetzt werden. Das

SAFETY INFORMATION

regulations of VBG 93 and the performance instructions for VBG 93 are valid.

prevent direct exposure to the laser beam, do not try to open the enclosure of the laser unit.

Gehäuse der Lasereinheit darf nicht geöffnet werden, da sonst Laserstrahlen austreten können.

LITHIUM BATTERIES

CAUTION: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED.

REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER. DISPOSE OF USED BATTERIES ACCORDING TO THE MANUFACTURERS INSTRUCTIONS.

VORSICHT: EXPLOSIONSGEFAHR BEI UNSACHGEMÄßEM AUSTAUSCH DER

BATTERIE. ERSATZ NUR DURCH DENSELBEN ODER EINEN VOM HERSTELLER EMPFOHLENEN ÄHNLICHEN TYP. ENTSORGUNG GEBRAUCHTER BATTERIEN NACH ANGABEN DES HERSTELLERS.

HL-2460 SERVICE MANUAL

ADDITIONAL INFORMATION

When servicing the optical system of the printer, be careful not to place a screwdriver or other reflective object in the path of the laser beam. Be sure to take off any personal accessories such as watches and rings before working on the printer. A reflected beam, though invisible, can permanently damage the eyes.

Since the beam is invisible, the following caution label is attached on the laser unit.

DANGER GEFAHR DANGER VARNING FARE ATTENTIE FARE iPELIGRO!

VAROITUS

SAFETY INFORMATION

DEFINITIONS OF WARNINGS, CAUTIONS AND NOTES

The following conventions are used in this service manual:

Indicates warnings that must be observed to prevent possible personal injury.

Indicates cautions that must be observed to service the printer properly or prevent damage to the printer.

NOTE:

Indicates notes and useful tips to remember when servicing the printer.

**Listed below are the various kinds of WARNING messages included in this manual.

WARNING

CAUTION:

WARNING

Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the printer.

WARNING

Some parts inside the printer are extremely hot immediately after the printer is used. When opening the front cover or rear cover to access any parts inside the printer, never touch the red colored parts shown in the following figures.

Fuser is HOT!

Inside the printer Open the face-up output tray

WARNING

If malfunctions with the power plug inserted into the power outlet, special caution should be exercised even if the power switch is you analyze OFF because it is a single pole switch.

xii

CHAPTER 1 GENERAL

1. FEATURES

This printer has the following features;

High Resolution and Fast Print Speed

True 1200 X 1200 dots per inch (dpi), 600 x 600 dots per inch (dpi) and true 300 x 300 dots per inch (dpi) for graphics with microfine toner and up to 28 pages per minutes (ppm) print speed (A4) and 30 pages per minutes (ppm) print speed (Letter paper).

Versatile Paper Handling

The printer loads paper automatically from the paper tray. The paper tray can hold A4, letter, B5 (ISO), B5 (JIS), A5, B6 (ISO), A6, Executive and Legal size paper. The manual feed tray allows manual paper loading sheet by sheet so you can use a variety of types and sizes of paper.

Front Operation

Basic operation of the printer can be controlled from the front panel.

HL-7050 SERVICE MANUAL

Enhanced Printing Performance and User-Friendly Operation for Windows



The dedicated printer driver for Microsoft Windows 95/98/Me and Windows NT

4.0/2000/XP are available on the CD-ROM supplied with your printer. You can easily install them into your Windows



system using our installer program. The driver allows you to choose various printer settings including toner save mode, custom paper size, sleep mode, gray scale adjustment, resolution, watermark and many other layout functions. You can easily setup these print options through the Printer Setup Menu.

Printer Status Monitor

The printer status monitor program can show the current status of your printer. When printing, the animated dialog box appears on your computer screen to show the current printing process. If an error occurs, a dialog box will appear to let you know what to correct. If you have turned on the interactive Help, you can get visual guidance on your PC screen on the actions to take in the event of certain printer errors.

Quick Print Setup

The Quick Print Setup is a convenient utility to allow you to make changes to frequently used driver settings easily without having to open the printer properties selection box every time. It is launched automatically when this printer driver is selected. You can change the settings by clicking on the icon with the right mouse button.

Enhanced Memory Management

The printer provides its own data compression technology in its printer hardware and the supplied printer driver software, which can automatically compress graphic data and font data efficiently into the printer’s memory. You can avoid memory errors and print most full-page 1200 dpi graphic and text data, including large fonts, with the standard printer memory.



USB Interface (for Windows

98/2000/XP, iMac and Power Macintosh with USB installed)

The printer can be connected using the Universal Serial Bus (USB) interface to a PC or Macintosh, which has the USB interface. Drivers that allow you to use the USB port are provided on the CD-ROM supplied with the printer.

1-1

CHAPTER 1 GENERAL

Popular Printer Emulation Support

The printer supports the following printer emulation modes; HP LaserJet (PCL6), Epson FX-850, IBM Proprinter XL, HP-GL and PostScript language emulation (Brother BR-Script Level 3).

When you use DOS application software or Windows version 3.0 or earlier, you can use any of these emulations to operate the printer. The printer also supports auto-emulation switching between HP, Brother BR-Script 3, HP-GL and Epson or HP, BR-Script 3, HP-GL and IBM. If you want to set the printer emulation, you can do it by operating the front panel.

High Resolution Control & Advanced Photoscale Technology

High Resolution Control (HRC) technology provides clear and crisp printouts. Use this function to get smooth text print quality.

Advanced Photoscale Technology (APT) enables the printer to print graphics in 256 grayscales, producing nearly photographic quality. Use this function when you want to print photographic images.

Environment-Friendly

<Economy Printing Mode> This feature will cut your printing cost by saving toner. It is useful for obtaining draft copies for proof-reading.

<Sleep Mode (Power Save Mode)> Sleep mode automatically reduces power consumption when the printer is not in use for a certain period of time. The printer consumes less than 16W when in sleep mode.



Level 3

Bar Code Print

The printer can print the following 11 types of bar codes;

•

Code 39

•

Code 128

•

Interleaved 2 of 5

•

Codabar

•

US-PostNet

•

ISBN

•

UPC-A

•

UPC-E

•

EAN-8

•

EAN-13

•

EAN-128

Network Feature

The Brother network printer has a built in multi protocol network capability as standard. This allows multiple host computers to share the printer on a 10/100Mbit Ethernet network. Any users can print their jobs as if the printer was directly connected to their computer. Users on Windows



95/98/Me, Windows NT/2000/XP, UNIX, Novell, Apple Macintosh, LAN server and OS/2 Warp server computer simultaneously can access this printer. For further information, see the Network User’s Guide supplied with the printer.

1-2

2. OVERVIEW

Multi-purpose tray

Multi-purpose extension flap

HL-7050 SERVICE MANUAL

Face down output tray

Extension flap Control panel

Top cover

Upper paper cassette (Tray 1)

Parallel interface connec tor

USB connector

Serial interface connector

Network board slot

(for optional Network board)

(for optional CompactFl ash

Face up output tray

Card slot

card)

Fig. 1-1

AC power inlet Power switch

Fig. 1-2

1-3

CHAPTER 1 GENERAL

3. SPECIFICATIONS

3.1 Printing

Print method Electrophotography (single-component dry toner) Laser Semiconductor laser

Resolution 1200dpi (for Windows

Print quality Normal printing mode

Wave length: 788 nm Output: 15mW max

95/98/Me, WindowsNT® 4.0, Windows® 2000

Windows

600 dpi (for Windows

Windows

300 dpi (for Windows

Windows

XP and Mac OS)

95/98/Me, WindowsNT® 4.0, Windows® 2000,

XP, DOS and Mac OS)

95/98/Me, WindowsNT® 4.0, Windows® 2000,

XP and Mac OS)

Economy printing mode (up to 20% toner saving)

Print speed Up to 28 ppm*

(When loading A4 )

Up to 30 ppm*

(When loading Letter-size paper.) Warm-up Max. 20 seconds at 23°C (68°F) First print Approx. 11 seconds

(When loading A4 or Letter-size paper using face down print delivery

from the paper tray.)

Consumables Toner cartridge

Life expectancy: 12,000 single-sided pages/cartridge

Drum unit

Life expectancy: 40,000 single-sided pages/unit

(When printing A4 or Letter-size paper with the print density set at

level 0 with about 5% print coverage)

*NOTE: Print speed varies depending on the paper size or print paper type. For details, refer to

APPENDIX 18 ‘PRINT SPEEDS WITH VARIOUS SETTINGS’.

1-4

3.2 Functions

CPU Toshiba TMPR4955 266MHz

HL-7050 SERVICE MANUAL

Emulation Brother Printing Solution for Windows



Automatic emulation selection among HP LaserJet 5(PCL 6), Brother

BR-Script 3, HP-GL, EPSON FX-850 or IBM Proprinter XL Printer driver <PCL Driver>

Windows



95/98/Me, Windows NT 4.0/2000/XP driver, supporting Brother Native Compression mode <PS Driver> PPD file driver for Windows



95/98/Me, Windows NT 4.0/2000/XP

driver and Macintosh driver

Interface • Bi-directional parallel

• Universal Serial Bus (USB)

• RS-232C

• Network Memory HL7050/HL7050N : 32.0 Mbytes*

Expandable up to 288 Mbytes by installing an industry standard DIMM*

Control Panel • Display LCD: 2 lines by 16-column liquid crystal display with

a three color back light

LED: 1 LED

• Buttons: 7 buttons

Diagnostics Self-diagnostic program

The standard memory installed varies depending on the country.

NOTE:

* The DIMM (Dual in Line Memory Module) must have the following specifications: -

Type: 100 pin Access time: 60 nsec - 80 nsec Capacity: 16, 32, 64, 128 Mbytes Height: 35.0 mm (1.38 inches) or less Output: 32 bit or 36 bit (independent of parity)

3.3 Options

Paper handling • Lower tray unit (LT-7000); Maximum 500 sheets x 3 trays

• Duplex unit for duplex printing (DX-7000)

• Mailbox unit for output source (MX-7000 series)

Stabilizer Stabilizer for safe installation of the printer with options fitted (SB-

4000)

Storage Device Hard Disk Drive (HD-EX), CompackFlash Card (Not provided by

Brother)

1-5

CHAPTER 1 GENERAL

3.4 Electrical and Mechanical

Power source U.S.A. and Canada: AC 110 to 120V, 50 Hz/60 Hz

Power consumption Printing (average): 690 W or less (when printing plain paper at

Noise Printing: Lwad = about 67 dB (A) *

Temperature Operating: 10 to 32.5°C (50 to 90.5°F)

Humidity Operating: 20 to 80% (non condensing)

Dimensions Printer: 485 x 480 x 421 mm (W x D x H)

Europe and Australia: AC 220 to 240V, 50 Hz/60 Hz

25°C)

Standing by: 110 W or less (at 25°C)

Sleep*

: 16 W or less (default activation time: 30 min.)

Lwad = about 48 dB (A)

Storage: 0 to 35°C (38 to 95°F)

Storage: 10 to 80% (non condensing)

(19.1 x 18.9 x 16.6 inches) Carton: 575 x 665 x 570 mm (W x D x H)

(22.6 x 26.2 x 22.4 inches)

Weight Printer: Approx. 24.1 kg (53.1 lb.) (Excluded Toner and Drum)

Carton: Approx. 30.6 kg (67.5 lb.) (Included Toner, Drum and Carton)

NOTE:

* The power consumption figure quoted for sleep mode is when the fan has stopped.

NOTE:

You might want to install printers with a sound power level of Lwad 63 dB (A) or more in a separate room or cubicle.

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3.5 Network

Type / Speed Ethernet 10BaseT/100BaseTX Print server (NC-4100h)

Protocols TCP/IP (DHCP, BOOTP, RARP, APIPA, NetBIOS over IP

HL-7050 SERVICE MANUAL

Auto speed detection

LPR/LPD, Port9100, Custom Port, POP3/SMTP, SMB Print TELNET, SNMP, HTTP, TFTP, FTP, IPP, SSDP), EtherTalk, IPX/SPX, DEC LAT, Banyan VINES, NetBEUI, DLC/LLC

Management • Web Based Management



• BRAdmin Professional Windows

based management utility

• Web BRAdmin Server Software

Firmware update 4MB flash ROM. Use BRAdmin Professional when upgrading print

server software or FTP, TFTP PUT/GET or IPX for Netware.

Supplied software • BRAdmin Professional management utility (for Windows



95/98/NT 4.0/2000/XP)

• Port driver for Windows

LPR port driver (for Windows



95/98/Me/NT 4.0/2000/XP



95/98/Me/NT4.0 only)

NetBIOS port driver, SMTP port driver

• Web BRAdmin Server Software

1-7

CHAPTER 1 GENERAL

3.6 Paper

3.6.1 Feedable paper

We recommend the following paper types and sizes for each paper tray or print method. (1) Paper type

Paper type

Plain paper Thin paper Recycled paper Bond paper

Thick paper

Transparency

Labels

Envelope Card stock

Tray 1

60- 105 g/m (16 - 28 lbs.)

MP tray

60- 200 g/m

(16 - 53 lbs.)

Tray 2/3/4

60- 105 g/m (16 - 28 lbs.)

60- 105 g/m

(16 - 28 lbs.)

60- 105 g/m

(16 - 28 lbs.)

9999

99 9

Only A4 or Letter size

Select the media type

from the printer driver

Plain paper Thin paper Plain paper Bond paper Thick paper

or thicker paper

Transparency

Thick paper

Envelope Thick paper

or thicker paper

1-8

(2) Paper size

HL-7050 SERVICE MANUAL

Paper size

Capacity

Tray 1

A4, Letter, Legal, B5(JIS), B5(ISO), Executive, A5, A6, B6

500 sheets (80 g/m

20 lbs.)

MP tray Tray 2/3/4 DX MX

A4, Letter, Legal, B5(JIS), B5(ISO), Executive, A5, A6, B6, COM-10, Monarch, C5, DL

Width:

A4, Letter, Legal, B5(JIS), B5(ISO), Executive, A5

A4, Letter, Legal, B5(JIS) Executive

105 to 216 mm (4.13 to 8.5 in.)

Height:

148.5 to 356 mm (5.85 to 14.0 in.)

100 sheets (80 g/m2 or 20 lbs.)

Transparencies:

500 sheets (80 g/m

20 lbs.) 10 sheets Envelopes:

10 sheets Label stock:

10 sheets

A4, Letter, B5(JIS), B5(ISO), Executive

100 sheets per bin (80 g/m

20 lbs.)

(3) Other paper specifications

Paper Tray

Cut sheet Basis weight 60 to 105 g/m2 (16 to 28 lb.) Caliper 0.08 to 0.13 mm

(0.003 to 0.005 in.)

Moisture content 4% to 6% by weight

MP Tray

Cut sheet Envelope

Basis weight 60 to 200 g/m2 (16 to 53 lb.) 75 to 90 g/m2 (20 to 24 lb.)

single thickness

Caliper 0.08 to 0.2 mm

(0.003 to 0.008 in.)

0.084 to 0.14 mm (0.003 to 0.005 in.) single thickness

Moisture content 4% to 6% by weight 4% to 6% by weight

1-9

CHAPTER 1 GENERAL

(4) Recommended paper

Plain paper * Xerox Premier 80 g/m Transparency 3M CG3300 3M CG3300 Label Avery laser label L7163 Avery laser label #5160

* Recommended paper should have the following technical specifications: Basis Wait 75-90 (g/m

Thickness 80-110 (micrometer) Roughness Higher than 20 (sec.) Stiffness 90-150 (cm Grain Direction Long Grain Volume Resistivity 10e Surface Resistivity 10e Filler CaCO3 (Neutral) Ash Content below 23 (wt%) Brightness higher than 80 (%) Opacity higher than 85 (%)

Europe USA

)

/100)

– 10 e

(ohm)

(ohm-cm)

Xerox 4200DP 20 lb.

As a general guidance, paper that is suitable for a photocopier is generally suitable.

1-10

HL-7050 SERVICE MANUAL

CAUTION:

When you are choosing print media, be sure to follow the information given below to prevent any paper jams, print quality problems or printer damage;

• It is recommended to use long-grained paper for the best print quality. If short-grained paper is being used, it might be the cause of paper jams.

• Use neutral paper. Do not use acid paper to avoid any damage to the drum unit.

• Avoid using coated paper such as vinyl coated paper.

• Avoid using preprinted or highly textured paper.

• It is recommended to use labels or transparencies, which are designed for use in laser

printers.

• Avoid feeding labels with the carrier sheet exposed, or the printer will be damaged.

• Before loading paper with holes such as organizer sheets, be sure to fan the stack well.

• Do not use organizer sheets that are stuck together. The glue that is used might cause

damage to the printer.

• When printing on the back of pre-printed paper, if the paper is curled, be sure to straighten the paper as much as possible.

• Different types of paper should not be loaded at the same time in the paper tray to avoid any paper jams or misfeeds.

3.6.2 Print delivery

(1) Face down output tray Capacity: Maximum 500 sheets (80 g/m

(2) Face up output tray Capacity: 100 sheet **Thicker paper printing is recommended.

NOTE: Face down: Delivery with the printed face of the paper downwards.

Face up: Delivery with the printed face of the paper upwards.

Face down only

Face up only

)

1-11

CHAPTER 1 GENERAL

(3) We recommend the following print methods (output tray) for each paper type.

Paper type

Plain paper Thin paper Recycled paper

Bond paper Thick paper

Thicker paper Transparency Labels Envelope Card stock

Paper output

Face down Face up

9 9

Notes

70g/m 60g/m

to 90 g/m2 (19 to 24Ib.)

to 70 g/m2 (16 to 19Ib.)

Rough paper – 60g/m 53Ib.)

90g/m 120g/m

to 120 g/m2 (24 to 32Ib.)

to 200 g/m2 (32 to 53Ib.)

Overhead projector film

to 200 g/m2 (16 to

1-12

3.7 Printable Area

3.7.1 PCL5e/EPSON/IBM emulation

The figure below shows the printable area each emulation guarantees when printing on Portrait and Landscape.

HL-7050 SERVICE MANUAL

1-13

CHAPTER 1 GENERAL

The table below shows the printable areas when printing on Portrait for each paper size.

Size A B C D E F G

Letter

Legal

Executive

A 4

A 5

A 6

B 5 (JIS)

B 5 (ISO)

B 6

COM10

MONARCH

C 5

NOTE:

•

The paper sizes indicated here should confirm to the nominal dimensions specified by JIS except B5 (ISO).

•

The dot size is based on 300 dpi resolution.

215.9 mm ”

8.5

(2,550 dots)

215.9 mm

8.5”

(2,550 dots)

184.15 mm

7.25”

(2,175 dots)

210.0 mm

8.27”

(2,480 dots)

148.5 mm

5.85”

(1,754 dots)

105.0 mm

4.13”

(1,240 dots)

182.0 mm

7.1”

(2,130 dots)

176.0 mm

6.93”

(2,078 dots)

125.0 mm

4.92”

(1,476 dots)

104.78 mm

4.125”

(1,237 dots)

98.43 mm

3.875”

(1,162 dots)

162.0 mm

6.38”

(1,913 dots)

110.0 mm

4.33”

(1,299 dots)

279.4 mm

11.0” (3,300 dots)

355.6 mm

14.0” (4,200 dots)

266.7 mm

10.5” (3,150 dots)

297.0 mm

11.69” (3,507 dots)

210.0 mm

8.27” (2,480 dots)

148.5 mm

5.85” (1,754 dots)

257.0 mm

10.11” (3,033 dots)

250.0 mm

9.84” (2,952 dots)

176.0 mm

6.93” (2,078 dots)

241.3 mm

9.5” (2,850 dots)

190.5 mm

7.5” (2,250 dots)

229.0 mm

9.01” (2,704 dots)

220.0 mm

8.66” (2,598 dots)

203.2 mm

8.0” (2,400 dots)

203.2 mm

8.0” (2,400 dots)

175.7 mm

6.92” (2,025 dots)

198.0 mm

7.79” (2,338 dots)

136.5 mm

5.37” (1,612 dots)

93.0 mm

3.66” (1,098 dots)

170.0 mm

6.69” (2,007 dots)

164.0 mm

6.46” (1,936 dots)

164.0 mm

4.44” (1,334 dots)

92.11 mm

3.63” (1,087 dots)

85.7 mm

3.37” (1,012 dots)

150.0 mm

5.9” (1,771 dots)

98.0 mm

3.86” (1,157 dots)

279.4 mm

11.0” (3,300 dots)

355.6 mm

14.0” (4,200 dots)

266.7 mm

10.5” (3,150 dots)

297.0 mm

11.69” (3,507 dots)

210.0 mm

8.27” (2,480 dots)

148.5 mm

5.85” (1,754 dots)

257.0 mm

10.11” (3,033 dots)

250.0 mm

9.84” (2,952 dots)

176.0 mm

6.93” (2.078 dots)

241.3 mm

9.5” (2,850 dots)

190.5 mm

7.5” (2,250 dots)

229.0 mm

9.01” (2,704 dots)

220.0 mm

8.66” (2,598 dots)

6.35 mm

0.25” (75 dots)

6.35 mm

0.25” (75 dots)

6.01 mm

0.24” (71 dots)

6.35 mm

0.25” (75 dots)

6.01 mm

0.24” (71 dots)

0 mm

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

1-14

HL-7050 SERVICE MANUAL

1-15

CHAPTER 1 GENERAL

The table below shows the printable areas when printing on Landscape for each paper size.

Size A B C D E F G

Letter

Legal

Executive

A 4

A 5

A 6

B 5 (JIS)

B 5 (ISO)

B 6

COM10

MONARCH

C 5

NOTE:

•

The paper sizes indicated here should confirm to the nominal dimensions specified by JIS except B5 (ISO).

•

The dot size is based on 300 dpi resolution.

279.4 mm

11.0”

(3,300 dots)

355.6 mm

14.0”

(4,200 dots)

266.7 mm

10.5”

(3,150 dots)

297.0 mm

11.69”

(3,507 dots)

210.0 mm

8.27”

(2,480 dots)

148.5 mm

5.85”

(1,754 dots)

257.0 mm

10.11”

(3,033 dots)

250.0 mm

9.84”

(2,952 dots)

176.0 mm

6.93”

(2,078 dots)

241.3 mm

9.5”

(2,850 dots)

190.5 mm

7.5”

(2,250 dots) 229 mm

9.01”

(2,704 dots) 220 mm

8.66”

(2,598 dots)

215.9 mm

8.5” (2,550 dots)

215.9 mm

8.5” (2,550 dots)

184.15 mm

7.25” (2,175 dots)

210.0 mm

8.27” (2,480 dots)

148.5 mm

5.85” (1,754 dots)

105.0 mm

4.13” (1,240 dots)

182.0 mm

7.1” (2,130 dots)

176.0 mm

6.93” (2,078 dots)

125.0 mm

4.92” (1,476 dots)

104.78 mm

4.125” (1,237 dots)

98.43 mm

3.875” (1,162 dots) 162 mm

6.38” (1,913 dots) 110 mm

4.33” (1,299 dots)

269.3 mm

10.6” (3,180 dots)

345.5 mm

13.6” (4,080 dots)

256.6 mm

10.1” (3,030 dots)

287.0 mm

11.2” (3,389 dots)

200.0mm

7.87” (2,362 dots)

138.5 mm

5.45” (1,636 dots)

247.0 mm

9.72” (2,916 dots)

240.0 mm

9.44” (2,834 dots)

166.4 mm

6.55” (1,960 dots)

231.1 mm

9.1” (2,730 dots)

180.4 mm

7.1” (2,130 dots)

219.0 mm

8.62” (2,586 dots)

210.0 mm

8.26” (2,480 dots)

215.9 mm

8.5” (2,550 dots)

215.9 mm

8.5” (2,550 dots)

184.15 mm

7.25” (2,175 dots)

210.0 mm

8.27” (2,480 dots)

148.5 mm

5.85” (1,754 dots)

105.0 mm

4.13” (1,240 dots)

182.0 mm

7.1” (2,130 dots)

176.0 mm

6.93” (2,078 dots)

125.0 mm

4.92” (1,476 dots)

104.78 mm

4.125” (1,237 dots)

98.43 mm

3.875” (1,162 dots) 162 mm

6.38” (1,913 dots) 110 mm

4.33” (1,299 dots)

5.0 mm

0.2” (60 dots)

5.0 mm

0.2” (60 dots)

4.8 mm

0.19” (59 dots)

5.0 mm

0.2” (60 dots)

4.8 mm

0.19” (59 dots)

0 mm

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

4.2 mm

0.16” (50 dots)

3.7.2 PCL6/BR-Script3 emulation

You can not print within 4.2 mm (50dots in 300-dpi mode) on all four sides of the paper.

1-16

+ 296 hidden pages

Brother HL-7050N, HL-7050 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

PREFACE

TABLE OF CONTENTS

REGULATION

SAFETY INFORMATION

CHAPTER 1 GENERAL

1. FEATURES

2. OVERVIEW

3. SPECIFICATIONS

3.1 Printing

3.2 Functions

3.3 Options

3.4 Electrical and Mechanical

3.5 Network

3.6 Paper

3.6.1 Feedable paper

3.6.2 Print delivery

3.7 Printable Area

3.7.1 PCL5e/EPSON/IBM emulation

3.7.2 PCL6/BR-Script3 emulation