Brother DCP-J4120DW, Service Manual

Page 1: ...VICE MANUAL MODELS DCP J4120DW MFC J4320DW J4420DW MFC J4520DW MFC J4620DW J4625DW April 2014 SM FAX156 8CAU Read this manual thoroughly before maintenance work Keep this manual in a convenient place for quick and easy reference at all times ...

Page 2: ...ce FLICKR is a registered trademark of Yahoo Inc Android Google Cloud Print Google Drive and Picasa Web Albums are trademarks of Google Inc Use of these trademarks are subject to Google Permissions Mozilla and Firefox are registered trademarks of the Mozilla Foundation UNIX is a registered trademark of The Open Group in the United States and other countries Linux is the registered trademark of Lin...

Page 3: ...The table below shows the functional comparison between the models covered by this manual DCP J4120DW MFC J4320DW MFC J4420DW MFC J4520DW J4620DW J4625DW LCD 2 7 inch 3 7 inch ADF Photo Capture Center Wired LAN NFC ...

Page 4: ...mory 1 2 1 6 Interface 1 3 1 7 Others 1 3 2 FAX 1 4 3 PRINTER 1 4 4 COPY 1 5 5 SCANNER 1 5 6 SOFTWARE 1 5 7 NETWORK 1 6 7 1 Network 1 6 7 2 Wired 1 6 7 3 Wireless 1 6 8 SUPPLIES OPTIONS 1 7 9 SERVICE INFORMATION 1 7 10 PAPER 1 8 10 1 Paper 1 8 10 2 Printable Area 1 10 CHAPTER 2 TROUBLESHOOTING 2 1 1 INTRODUCTION 2 1 1 1 Precautions 2 1 1 2 Initial Check 2 1 2 OVERVIEW 2 3 2 1 Cross section Drawing...

Page 5: ...nual feed slot 2 55 4 2 3 Two or more sheets of paper fed at a time 2 55 4 2 4 Paper feeding at an angle 2 55 4 2 5 Recording paper jam 2 56 4 2 6 Prints only single side of the paper when duplex printing 2 60 4 3 Print image Problems 2 61 4 3 1 Defective images 2 61 4 3 2 Print image problems 2 62 4 4 Software related Problems 2 72 4 4 1 Cannot print data 2 72 4 5 Network Problems 2 73 4 5 1 Cann...

Page 6: ...es not read 2 85 4 10 4 Internal memory errors 2 86 4 10 5 Security Function Lock related problems 2 86 4 10 6 Remaining ink related problems 2 86 4 10 7 Ink absorber box related problems 2 86 CHAPTER 3 DISASSEMBLY AND ASSEMBLY 3 1 1 PRECAUTIONS BEFORE PROCEEDING 3 1 2 PACKING 3 3 3 SCREW CATALOGUE 3 4 4 SCREW TORQUE LIST 3 5 5 LUBRICATION 3 6 6 OVERVIEW OF GEARS 3 11 7 ROUTING OF HARNESSES AND IN...

Page 7: ...less LAN PCB ASSY 3 56 9 23 Main PCB ASSY 3 57 9 24 Sensor Relay PCB ASSY 3 59 9 25 Modem PCB ASSY 3 60 9 26 Carriage PCB ASSY 3 61 9 27 Head Joint Rubber 3 65 9 28 Head Carriage Unit and CR Timing Belt 3 66 9 29 Power Supply PCB ASSY 3 71 9 30 Ink Refill ASSY 3 74 9 31 CR Encoder Strip 3 76 9 32 Ink Cartridge Cover Sensor ASSY 3 77 9 33 Flushing Base 3 78 9 34 Carriage Motor ASSY 3 82 9 35 Switch...

Page 8: ...paper feeding correction values Maintenance mode 58 4 7 1 13 Adjust margins in borderless printing Maintenance mode 66 4 7 1 14 Reset purge and flushing counts 4 7 1 15 Write head calibration data Maintenance mode 02 4 7 1 16 Check scanning and printing 4 8 2 IF YOU REPLACE THE HEAD CARRIAGE UNIT 4 9 2 1 Update the head property data Maintenance mode 68 4 10 2 2 Perform ink supply purge Maintenanc...

Page 9: ...NCTIONS 5 1 1 MAINTENANCE MODE 5 1 1 1 Entry to the Maintenance Mode 5 1 1 1 1 How to Enter the Maintenance Mode for Service Personnel 5 1 1 1 2 How to Enter the End User accessible Maintenance Mode 5 3 1 2 List of Maintenance mode Functions 5 4 1 3 Detailed Description of Maintenance mode Functions 5 5 1 3 1 EEPROM Parameter Initialization Maintenance mode 01 91 5 5 1 3 2 Creating of Head Calibra...

Page 10: ...for Inclination Corrugation Ruled Lines Maintenance mode 65 5 43 1 3 24 Margin Adjustment in Borderless Printing Maintenance mode 66 5 45 1 3 25 Updating of Head Property Data and Backup Restoration of Head Calibration Data Maintenance mode 68 5 47 1 3 26 Traveling Speed Check of Head Carriage Unit Maintenance mode 69 5 49 1 3 27 Customizing Destinations Maintenance mode 74 5 50 1 3 28 Move of the...

Page 11: ...WIRING DIAGRAMS 6 1 CHAPTER 7 PERIODICAL MAINTENANCE 7 1 1 PERIODICAL REPLACEMENT PARTS 7 1 APPENDIX 1 SERIAL NUMBERING SYSTEM App 1 1 APPENDIX 2 DELETION OF USER SETTING INFORMATION App 2 1 APPENDIX 3 INSTALLING THE MAINTENANCE PRINTER DRIVER App 3 1 ...

Page 12: ... as determined by the total RENs contact the local telephone company For products approved after July 23 2001 the REN for this product is part of the product identifier that has the format US AAAEQ TXXXX The digits represented by are the REN without a decimal point e g 06 is a REN of 0 6 For earlier products the REN is separately shown on the label If this equipment causes harm to the telephone ne...

Page 13: ...ocate 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 This transmitter must not be co located or operated in conjunction with any other antenna or transmitter IMPORTANT Changes or modifications no...

Page 14: ...d en compromettre le fonctionnement EQUIPMENT ATTACHMENT LIMITATIONS Canada only NOTICE This product meets the applicable Industry Canada technical specifications Le présent materiel est conforme aux specifications techniques applicables d Industrie Canada NOTICE The Ringer Equivalence Number is an indication of the maximum number of devices allowed to be connected to a telephone interface The ter...

Page 15: ...elecommunications and or radio interfaces We Brother Industries Ltd 15 1 Naeshiro cho Mizuho ku Nagoya 467 8561 Japan declare that these machines are in conformity with the provisions of the R TTE Directive 1999 5 EC A copy of the Declaration of Conformity can be downloaded by following the instructions in the Declaration of Conformity Europe only section Radio interference This product complies w...

Page 16: ...he purpose of the International ENERGY STAR Program is to promote the development and popularization of energy efficient equipment As an ENERGY STAR Partner Brother Industries Ltd has determined that this product meets the ENERGY STAR specifications for energy efficiency ...

Page 17: ...E NOTE specifies the operating environment conditions for installation or special conditions of use Italics Italicized typeface emphasizes an important point or refers you to a related topic Follow all warnings and instructions marked on the machine NOTE The illustrations in this section show the MFC J5720DW Prohibition icons indicate actions that must not be performed This icon indicates that fla...

Page 18: ...J 45 Models with Wired LAN function only cables from the machine DO NOT push objects of any kind into this machine through slots or openings in the cabinet as they may touch dangerous voltage points or short out parts DO NOT handle the plug with wet hands Always make sure the plug is fully inserted Unplug the power plug regularly to clean it Use a dry cloth to clean the root of the plug blades and...

Page 19: ... rating label DO NOT connect it to a DC power source or inverter If you are not sure what kind of power source you have contact a qualified electrician Power Cord Safety DO NOT pull on the middle of the AC power cord pulling on the middle may cause the cord to separate from the plug Doing this might cause an electrical shock DO NOT allow anything to rest on the power cord DO NOT place this machine...

Page 20: ...dent For users with pacemakers This machine generates a weak magnetic field If you feel anything wrong with the operation of your pacemakers when near the machine move away from the machine and consult a doctor immediately If the machine becomes unusually hot releases smoke generates any strong smells or if you accidentally spill any liquid on it immediately unplug the product from the AC power ou...