Service Manual Brother DCP-J4120DW MFC-J4320DW MFC-J4420DW MFC-J4520DW MFC-J4620DW MFC-J4625DW;
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• Mfc J491dw Brother Printer Manual
• Brother Mfc J805dw User Manual

Use Remote Setup to Set Up the Brother Machine from Your Computer (Windows ®) Use Remote Setup to Set Up the Brother Machine with ControlCenter4 (Windows ®) Use Remote Setup to Set Up Your Brother Address Book with ControlCenter4 (Windows ®) Remote Setup (Macintosh) Use Remote Setup to Set Up the Brother Machine with ControlCenter2 (Macintosh). The Brother Business Smart MFC-J4420DW Series color inkjet all-in-one with duplex printing provides Small Office/Home Office users the Ultimate Combination of low cost printing, fast print speeds, and up to 11'x17' output via the single-sheet bypass. Aug 23, 2019  Brother’s MFC-J4420DW all-in-one printer is marketed toward office users, but it’s more than capable in a home setting. Print quality is very good, and it’s a good deal too. Color Pack Compatible Ink Cartridge Replacement for Brother 203 203XL Works with Brother MFC-J4320DW MFC-J4420DW MFC-J4620DW MFC-J5520DW MFC-J5620DW MFC-J5720DW MFC-J480DW J485DW J460DW J880DW J680DW. 4.4 out of 5 stars 285. If you need help, please visit the help section or contact us. Brother support. Download and install the latest drivers and software for your Brother device, find your user manual or search through our frequently asked questions. Whatever help you need, we're at.

REGULATION
SAFETY INFORMATION

Connect your mobile devices to the MFC-J4420DW using your wireless network and enjoy printing using AirPrint, Google Cloud Print™, or Brother's iPrint&Scan app. A rear single sheet manual feed slot accepts paper up to A3 in size, and the option to use high-yield ink cartridges help lower your printing costs. View and Download Brother MFC-J4320DW basic user's manual online. MFC-J4320DW All in One Printer pdf manual download. Also for: Mfc-j4420dw, Mfc-j4620dw.

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CHAPTER 1. SPECIFICATIONS
1 GENERAL
1.1 General
1.2 Media Specification
1.3 Paper Handling
1.4 LCD Panel
1.5 Memory
1.6 Interface
1.7 Others
2 FAX
3 PRINTER
4 COPY
5 SCANNER
6 SOFTWARE
7 NETWORK
7.1 Network
7.2 Wired
7.3 Wireless
8 SUPPLIES/OPTIONS
9 SERVICE INFORMATION
10 PAPER
10.1 Paper
10.2 Printable Area

CHAPTER 2. TROUBLESHOOTING
1 INTRODUCTION
1.1 Precautions
1.2 Initial Check
2 OVERVIEW
2.1 Cross-section Drawings
2.1.1 Document scanning
2.1.2 Printer part
2.2 Document Feeding Path/Recording Paper Feeding Path
2.2.1 Document Feeding Path
2.2.2 Recording Paper Feeding Path
2.3 Parts Names and Functions
2.4 Block Diagram
2.5 Components
3 ERROR INDICATION
3.1 Error Code
3.2 Error Messages
3.3 Communications Error
4 TROUBLESHOOTING
4.1 Error Cause and Solutions
4.2 Recording Paper Feeding Problems
4.2.1 Paper is not fed from paper tray
4.2.2 Paper is not fed from manual feed slot
4.2.3 Two or more sheets of paper fed at a time
4.2.4 Paper feeding at an angle
4.2.5 Recording paper jam
4.2.6 Prints only single side of the paper when duplex-printing
4.3 Print-image Problems
4.3.1 Defective images
4.3.2 Print-image problems
4.4 Software-related Problems
4.4.1 Cannot print data
4.5 Network Problems
4.5.1 Cannot make a print through network connection
4.6 Control Panel Problems
4.6.1 No display on LCD
4.6.2 No display on LED
4.6.3 The control panel does not work
4.6.4 Touch panel inoperative
4.7 Document Feeding Problems
4.7.1 Document can not be fed
4.7.2 Document double feeding
4.7.3 Document jam
4.7.4 Wrinkles on documents
4.7.5 Document size not correctly detected
4.8 Scanned-image Problems
4.8.1 Defective images
4.8.2 Troubleshooting from image defect
4.9 Fax Problems
4.9.1 No faxes can be sent
4.9.2 No faxes can be received
4.9.3 A communications error occurs
4.10 Other Problems
4.10.1 The machine cannot be powered on
4.10.2 Memory card/PictBridge does not function (no response)
4.10.3 Data of memory card/PictBridge does not read
4.10.4 Internal memory errors
4.10.5 Security Function Lock related problems
4.10.6 Remaining ink related problems
4.10.7 Ink absorber box related problems

CHAPTER 3. DISASSEMBLY AND ASSEMBLY
1 PRECAUTIONS BEFORE PROCEEDING
2 PACKING
3 SCREW CATALOGUE
4 SCREW TORQUE LIST
5 LUBRICATION
6 OVERVIEW OF GEARS
7 ROUTING OF HARNESSES AND INK SUPPLY TUBES
8 DISASSEMBLY FLOW
9 DISASSEMBLY PROCEDURE
9.1 Preparation
9.2 Scanner Cover Damper and Scanner Cover Support
9.3 ADF Unit and Document Scanner Unit
9.4 ADF Hinge R, L
9.5 ADF Document Support
9.6 ADF Cover ASSY
9.7 ADF Separation Pad Holder ASSY
9.8 Document Separation Roller ASSY
9.9 Document Detection Sensor PCB and Document Scanning Position Sensor PCB
9.10 Manual Feed Slot Cover ASSY
9.11 First Side CIS Unit
9.12 First Side CIS Flat Cable
9.13 Upper Cover
9.14 Ink Cartridge Cover
9.15 Front Cover
9.16 Lower Side Covers R and L
9.17 Jam Clear Cover
9.18 Bank ASSY
9.19 Media Module Cover
9.20 Ink Absorber Box
9.21 Control Panel ASSY
9.22 Wireless LAN PCB ASSY
9.23 Main PCB ASSY
9.24 Sensor Relay PCB ASSY
9.25 Modem PCB ASSY
9.26 Carriage PCB ASSY
9.27 Head Joint Rubber
9.28 Head/Carriage Unit and CR Timing Belt
9.29 Power Supply PCB ASSY
9.30 Ink Refill ASSY
9.31 CR Encoder Strip
9.32 Ink Cartridge Cover Sensor ASSY
9.33 Flushing Base
9.34 Carriage Motor ASSY
9.35 Switchback Roller
9.36 Flushing Box
9.37 PF Encoder Disk and PF Encoder Sensor PCB ASSY
9.38 Paper Feed Motor
9.39 Paper Feed Roller
9.40 Paper Ejection Roller
9.41 Platen
9.42 Maintenance Unit
9.43 Inner Chute ASSY
9.44 Registration Sensor PCB ASSY
9.45 Base Pad on Paper Tray ASSY
9.46 Paper Pull-in Roller

CHAPTER 4. ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT
1 IF YOU REPLACE THE MAIN PCB
1.1 Customize destinations (Maintenance mode 74)
1.2 Set the CIS type (Maintenance mode 59)
1.3 Install the firmware (Maintenance mode 28)
1.4 Initialize the EEPROM parameters (Maintenance mode 01)
1.5 Restore the head property data (Maintenance mode 68)
1.6 Set the serial number (Maintenance mode 80)
1.7 Update the head property data (Maintenance mode 68)
1.8 Restore machine information (Maintenance mode 46)
1.9 Adjust the touch panel (Maintenance mode 78)
1.10 Acquire white level data (Maintenance mode 55)
1.11 Adjustment of software correction for inclination/corrugation/ruled lines (Maintenance mode 65)
1.12 Update the paper feeding correction values (Maintenance mode 58)
1.13 Adjust margins in borderless printing (Maintenance mode 66)
1.14 Reset purge and flushing counts
1.15 Write head calibration data (Maintenance mode 02)
1.16 Check scanning and printing
2 IF YOU REPLACE THE HEAD/CARRIAGE UNIT
2.1 Update the head property data (Maintenance mode 68)
2.2 Perform ink supply purge (Maintenance mode 76)
2.3 Check head nozzles (Maintenance mode 09)
2.4 Adjust head inclination
2.5 Adjustment of software correction for inclination/corrugation/ruled lines (Maintenance mode 65)
2.6 Update paper feeding correction values (Maintenance mode 58)
2.7 Adjust margins in borderless printing (Maintenance mode 66)
2.8 Write head calibration data (Maintenance mode 02)
2.9 Check printing
2.10 Obtain machine information at the user site (Instruction to the end user)
3 IF YOU REPLACE THE DOCUMENT SCANNER UNIT, ADF UNIT OR CIS UNIT
3.1 Set the CIS type (Maintenance mode 59) (Not required after replacement of the ADF unit)
3.2 Acquire white level data (Maintenance mode 55) (Not required after replacement of the ADF unit)
3.3 Check scanning
4 IF YOU REPLACE THE CONTROL PANEL ASSY
4.1 Adjust the touch panel (Maintenance mode 78)
4.2 Check LCD operation (Maintenance mode 12)
4.3 Check the operation of the control panel keys (Maintenance mode 13)
5 IF YOU REPLACE THE INK ABSORBER BOX OR FLUSHING BOX
5.1 Reset purge and flushing counts
6 IF YOU REPLACE THE PAPER FEEDING RELATED PARTS and MAINTENANCE UNIT
6.1 Check head nozzles (Maintenance mode 09)
6.2 Adjustment of software correction for inclination/corrugation/ruled lines (Maintenance mode 65)
6.3 Update paper feeding correction values (Maintenance mode 58)
6.4 Adjust margins in borderless printing (Maintenance mode 66)
6.5 Check printing

CHAPTER 5. SERVICE FUNCTIONS
1 MAINTENANCE MODE
1.1 Entry to the Maintenance Mode
1.1.1 How to Enter the Maintenance Mode for Service Personnel
1.1.2 How to Enter the End User-accessible Maintenance Mode
1.2 List of Maintenance-mode Functions
1.3 Detailed Description of Maintenance-mode Functions
1.3.1 EEPROM Parameter Initialization (Maintenance mode 01, 91)
1.3.2 Creating of Head Calibration Data and Writing it into Flash ROM (Maintenance mode 02)
1.3.3 Printout of Scanning Compensation White/Black Level Data (Maintenance mode 05)
1.3.4 ADF Performance Test (Maintenance mode 08)
1.3.5 Printout of Test Pattern (Maintenance mode 09)
1.3.6 Worker Switch Setting and Printout (Maintenance modes 10 and 11)
1.3.7 Operational Check of LCD (Maintenance mode 12)
1.3.8 Operational Check of Keys on Control Panel (Maintenance mode 13)
1.3.9 EEPROM Dump and Log Information Saving (Maintenance mode 17)
1.3.10 Updating of Firmware Using an External Memory (Maintenance mode 28)
1.3.11 Sensor Operational Check (Maintenance mode 32)
1.3.12 Printout of Dial Log (Maintenance mode 37)
1.3.13 Backup of Machine Information (Maintenance mode 46)
1.3.14 Setting of Country/Language (Maintenance mode 52)
1.3.15 Transfer of Received FAX Data and/or Equipment’s Log (Maintenance mode 53)
1.3.16 Fine Adjustment of Scanning Position (Maintenance mode 54)
1.3.17 Acquisition of White/Black Level Data and CIS Scanner Area Setting (Maintenance mode 55)
1.3.18 Cartridge IC Communication Check (Maintenance mode 57)
1.3.19 Updating of Paper Feeding Correction Values (Maintenance mode 58)
1.3.20 Checking of CIS Travel and Specifying of CIS Type (Maintenance mode 59)
1.3.21 Printout of PRN/JPEG Files in Memory Card (Maintenance mode 61)
1.3.22 Move of the Head/Carriage Unit to the Adjustment Position (Maintenance mode 63)
1.3.23 Adjustment of Software Correction for Inclination/Corrugation/Ruled Lines (Maintenance mode 65)
1.3.24 Margin Adjustment in Borderless Printing (Maintenance mode 66)
1.3.25 Updating of Head Property Data and Backup/Restoration of Head
Calibration Data (Maintenance mode 68)
1.3.26 Traveling Speed Check of Head/Carriage Unit (Maintenance mode 69)
1.3.27 Customizing Destinations (Maintenance mode 74)
1.3.28 Move of the Head/Carriage Unit to the Flushing Position (Maintenance mode 75)
1.3.29 Purge Operation (Maintenance mode 76)
1.3.30 Print of the Maintenance Information (Maintenance mode 77)
1.3.31 Adjustment of Touch Panel (Maintenance mode 78)
1.3.32 Display of the Equipment’s Log (Maintenance mode 80)
1.3.33 Equipment Error Code Indication (Maintenance mode 82)
1.3.34 Output of Transmission Log to the Telephone Line (Maintenance mode 87)
1.3.35 Assurance Mode Switch Setting (Maintenance mode 88)
2 OTHER SERVICE FUNCTIONS
2.1 Displaying the Firmware Version
2.2 Moving the Head/Carriage Unit
2.3 Retrieving the Equipment Log Information

CHAPTER 6. CIRCUIT DIAGRAMS AND WIRING DIAGRAMS
CHAPTER 7. PERIODICAL MAINTENANCE
1 PERIODICAL REPLACEMENT PARTS

Mfc J491dw Brother Printer Manual

APPENDIX 1 SERIAL NUMBERING SYSTEM
APPENDIX 2 DELETION OF USER SETTING INFORMATION
APPENDIX 3 INSTALLING THE MAINTENANCE PRINTER DRIVER

Brother Mfc J805dw User Manual

mfc dcp DCPJ4120DW MFCJ4320DW MFCJ4420DW MFCJ4520DW MFCJ4620DW MFCJ4625DW