Brother MFC-8220 Service Manual
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Brother MFC-8220 Service Manual

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SERVICE MANUAL

MODEL: MFC-8220
Read this manual thoroughly before maintenance work.
Keep this manual in a convenient place for quick and easy reference at all times.

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Summary of Contents for Brother MFC-8220

  • Page 1: Service Manual

    SERVICE MANUAL MODEL: MFC-8220 Read this manual thoroughly before maintenance work. Keep this manual in a convenient place for quick and easy reference at all times.
  • Page 2 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 TrueType is a trademark of Apple computer, Inc.
  • Page 3 PREFACE This publication is a Service Manual covering the specifications, construction, theory of operation, and maintenance of the Brother machine. It includes information required for field troubleshooting and repair--disassembly, reassembly, and lubrication--so that service personnel will be able to understand machine function, to rapidly repair the machine and order any necessary spare parts.

  • Page 4: Table Of Contents

    CHAPTER 2 INSTALLATION AND BASIC OPERATION....... 2-1 CONDITIONS REQUIRED FOR INSTALLATION............2-1 Power Supply ........................2-1 Environment ........................2-1 System Requirements for Brother Printer Solution ............2-2 UNPACKING ......................2-3 INSTALL THE MACHINE..................2-5 For All Users ........................2-5 3.1.1 Attaching the Supports ....................... 2-6 3.1.2 Installing the Handset ......................
  • Page 5 MFC-8220 SERVICE MANUAL 3.2.2 For Parallel Interface Cable Users ® (For Windows 95/98/98SE/Me/2000 Professional/XP) ...........2-18 ® 3.2.3 For Windows NT Workstation Version 4.0 Users ............2-23 3.2.4 For Optional NC-9100h Network Interface Users ® (For Windows 95/98/98SE/Me/NT/2000 Professional/XP) ..........2-25 ® 3.2.5 For USB Interface Cable Users (For Mac OS 8.6 to 9.2 Users) ........2-28...
  • Page 6 TABLE OF CONTENTS Drum Unit ........................3-20 2.5.1 Photosensitive drum......................3-20 2.5.2 Primary charger......................... 3-20 2.5.3 Transfer roller........................3-20 2.5.4 Cleaner ..........................3-20 Toner Cartridge ......................3-20 Print Process........................3-20 2.7.1 Charging ........................... 3-20 2.7.2 Exposure stage ......................... 3-21 2.7.3 Developing ........................3-22 2.7.4 Transfer..........................
  • Page 7 MFC-8220 SERVICE MANUAL CHAPTER 5 PERIODIC MAINTENANCE..........5-1 CONSUMABLE PARTS.....................5-1 Drum Unit ......................... 5-1 Toner Cartridge ........................ 5-4 PERIODICAL REPLACEMENT PARTS ..............5-9 2.1 Fixing Unit........................5-10 2.2 Paper Feeding Kit......................5-18 PERIODICAL CLEANING..................5-22 Cleaning the Machine Exterior..................5-22 Cleaning the Scanner ....................5-22 Cleaning the Drum Unit....................
  • Page 8 95/98/Me Peer to Peer (HP JetAdmin Compatible Method) Troubleshooting ..6-56 ® 10.8 Windows 95/98/Me/NT 4.0/2000 Peer to Peer Print (NetBIOS) Troubleshooting ..6-57 10.9 Brother Internet Print (TCP/IP) Troubleshooting ............6-57 ® 10.10 Windows 95/98/Me/2000/XP IPP Troubleshooting............6-57 10.11 Novell Netware Troubleshooting ..................6-58 10.12 AppleTalk Troubleshooting.....................
  • Page 9 MFC-8220 SERVICE MANUAL APPENDIX 2 INSTALLING THE UPDATE DATA........A-2 INSTALLING THE UPDATE DATA TO THE MACHINE.......... A-2 Connecting the Machine to Your PC ................A-2 Setting up the Machine and Your PC ................A-2 Installing the Update Data onto the Flash ROM of the Machine ........A-3 SETTING ID CODES TO MACHINES..............

  • Page 10: Regulation

    This product complies with FDA radiation performance standards, 21 CFR Subchapter J. The label for Chinese manufactured products MANUFACTURED: 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.
  • Page 11 MFC-8220 SERVICE MANUAL IEC 825 (220-240V MODEL ONLY) This printer is a Class I laser product as defined in IEC 825 specifications. The label shown below is attached in countries where required. CLASS 1LASERP RODUCT 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.

  • Page 12: Safety Information

    SAFETY INFORMATION SAFETY INFORMATION CAUTION FOR LASER PRODUCT (WARNHINWEIS FUR LASER DRUCKER) CAUTION: When the machine during servicing is operated with the cover open, the regulations of VBG 93 and the performance instructions for VBG 93 are valid. CAUTION: In case of any trouble with the laser unit, replace the laser unit itself. To prevent direct exposure to the laser beam, do not try to open the enclosure of the laser unit.
  • Page 13 MFC-8220 SERVICE MANUAL DEFINITIONS OF WARNINGS, CAUTIONS AND NOTES The following conventions are used in this service manual: WARNING Indicates warnings that must be observed to prevent possible personal injury. CAUTION: Indicates cautions that must be observed to service the printer properly or prevent damage to the printer.

  • Page 14: Chapter 1 General

    MFC-8220 SERVICE MANUAL CHAPTER 1 GENERAL OVERVIEW <Front View> Control panel ADF document support Telephone handset Control panel cover ADF document output support Face-down output tray Manual feed tray Power switch Paper tray Face-down output tray support Flap with extension (Support flap) Front cover Fig.

  • Page 15: Specifications

    CHAPTER 1 GENERAL SPECIFICATIONS General Memory Capacity 32 MB DIMM slot; Max. 160 MB Optional Memory Up to 30 pages Paper Tray 250 Sheets (20lb) Printer Type Laser 16 characters x 2 lines Max. 18 seconds at 73.4°F (23°C) Warm-up Power Source 120V AC 50/60Hz (U.S.A., Canada Version only) 220 to 240V AC 50/60Hz (Europe Version only)

  • Page 16: Copy

    One-Touch Dial 300 stations Speed-Dial Automatic Redial Three times 0 to 10 rings Auto Answer Up to 600 pages (Brother #1 Chart) Memory Transmission Out of Paper Up to 600 pages (Brother #1 Chart) Reception Specifications for Document Feeding System 2.6.1...

  • Page 17: Specifications For Adf

    20 to 30 degree C and humidity of 50 to 70%. The maximum number of sheets is 20 in the other environments. Printer ® Windows 95/98/98SE/Me/2000 Professional/XP/NT 4.0 Workstation Printer Driver Version 4.0 driver supporting Brother Native Compression mode and bi-directional capability ® ® ® Apple Macintosh...

  • Page 18: Network

    TELNET, SNMP, HTTP, TFTP), Netware IPX/SPX (Bindery and NDS), Apple Talk, DLC/LLC Control Web Based Management (HTTPD) BRAdmin Professional (TCP/IP or IPX/SPX is used) SNMP, Brother's original MIB in compliance with MIBII TELNET command console Web BRAdmin Update of Programs Flash ROM base Upgrade using TFTP/FTP protocols is available.
  • Page 19 CHAPTER 1 GENERAL (2) Size Paper tray (Tray #1) Manual feed tray Lower tray (Tray #2) A4, Letter, JIS B5, ISO B5, Size Horizontal: A4, Letter, JIS B5, ISO B5, ISO ISO B6, A5, A6, Legal, 69.8 to 220.0mm B6, A5, Legal, Executive Executive Vertical: 116.0 to 406.0mm...

  • Page 20: Paper Capacity

    MFC-8220 SERVICE MANUAL 2.11.2 Paper capacity Paper tray (Tray #1) Manual feed tray Lower tray (Tray #2) Paper capacity 250 sheets (80g/m 1 sheet 250 sheets (80g/m 2.11.3 Paper output (1) Face-down output tray Output capacity: Max. 150 sheets (80g/m...

  • Page 21: Print Speeds With Various Settings

    CHAPTER 1 GENERAL 2.13 Print Speeds with Various Settings Print speed of the machine is up to 18cpm when loading A4 size paper from the paper tray in the plain paper mode. Actual print speed varies depending on the paper type or paper size as shown in the tables below;...

  • Page 22: Toner Cartridge Weight Information

    MFC-8220 SERVICE MANUAL 2.14 Toner Cartridge Weight Information Toner Cartridge Weight (approx weight) Before M4JN000001B, M4JN000001C (Serial No.) TN3060/TN570 TN3030/TN540 Brand new Toner Cartridge Weight 827.5g 772.5g Toner Weight at Brand New Toner Cartridge 197.5±2.5g 142.5±2.5g Toner Cartridge Weight at Toner Near Empty 693.5-698.5g...

  • Page 23: Serial No. Descriptions

    December < ID for year > 2003 2004 < ID for factory > Kariya Plant Mie Brother BIUK Buji Nan Ling Factory (1) Machine: Printed on the label attached on the rear of the main body <Example> <MODEL NO.> < SERIAL NO. >...
  • Page 24 MFC-8220 SERVICE MANUAL (4) Toner cartridge: Imprinted on the aluminum bag 3 A 3 0 YEAR MONTH DATE FACTORY ID NO. Printed on the bar code label attached on the toner cartridge CARTRIDGE PRODUCTION INFO. M 3 9 A 0 0 0 1 9 9 A MONTH PRODUCTION LINE NO.

  • Page 25: Chapter 2 Installation And Basic Operation

    MFC-8220 SERVICE MANUAL CHAPTER 2 INSTALLATION AND BASIC OPERATION CONDITIONS REQUIRED FOR INSTALLATION Power Supply • The source voltage must stay within ±10% of the rated voltage shown on the rating plate. • The power cord, including extensions, should not exceed 5 meters (16.5 feet).

  • Page 26: System Requirements For Brother Printer Solution

    CHAPTER 2 INSTALLATION AND BASIC OPERATION System Requirements for Brother Printer Solution Check the following system requirements to setup and operate the printer using Brother Printing Solution: Computing System Processor Speed Minimum Recommended Available Operating System Version Hard Disk Space ®...

  • Page 27: Unpacking

    MFC-8220 SERVICE MANUAL UNPACKING When unpacking the machine, check to see that all of the following components are included in the carton. Quick Setup Guide CD-ROMs ® For Windows ® For Macintosh 1. Control Panel 6. Paper Tray 2. Telephone Handset 7.
  • Page 28 CHAPTER 2 INSTALLATION AND BASIC OPERATION CAUTION: When you move the machine, grasp the side handholds that are at the bottom shown in the illustration.

  • Page 29: Install The Machine

    MFC-8220 SERVICE MANUAL INSTALL THE MACHINE You need to implement hardware setup and driver installation to use the machine. ® ® Firstly, identify the Operating System on your computer. (Windows 95/98/Me, Windows ® 4.0/ Windows 2000/XP and Macintosh) Then, purchase the appropriate interface cable (Parallel, USB or Network) for your computer.

  • Page 30: Attaching The Supports

    CHAPTER 2 INSTALLATION AND BASIC OPERATION 3.1.1 Attaching the Supports NOTE: Do not connect the interface cable. Connecting the interface cable is done when installing the driver. (1) Attach the ADF document support. ADF document support Fig. 2-2 (2) Open the control panel cover by lifting it toward the back. Control panel cover Fig.

  • Page 31: Installing The Handset

    MFC-8220 SERVICE MANUAL 3.1.2 Installing the Handset (1) Connect the curled handset cord to the machine and the other end to the handset. (U.S.A. / Canada only) Fig. 2-5 3.1.3 Installing the Drum Unit Assembly (1) Open the front cover by pressing the front cover release button.
  • Page 32 CHAPTER 2 INSTALLATION AND BASIC OPERATION (2) Unpack the drum unit assembly. Remove the protective part. Drum unit assembly Protective part Fig. 2-7 (3) Rock it from side to side several times to distribute the toner evenly inside the assembly. Fig.

  • Page 33: Load Paper In The Paper Tray

    MFC-8220 SERVICE MANUAL 3.1.4 Load Paper in the Paper Tray (1) Pull the paper tray completely out of the machine. Fig. 2-11 (2) While pressing the paper guide release lever, slide the adjusters to fit the paper size. Check that the guides are firmly in the slots on the tray.
  • Page 34 CHAPTER 2 INSTALLATION AND BASIC OPERATION (3) Fan the stack of paper well to avoid paper jams and misfeeds. Fig. 2-14 (4) Put paper in the paper tray. Check that the paper is flat in the tray and below the maximum paper mark.

  • Page 35: Installing The Power Cord And Phone Line

    MFC-8220 SERVICE MANUAL 3.1.5 Installing the Power Cord and Phone Line NOTE: Do not connect the Parallel or USB cable yet. (1) Make sure that the power switch is off. Connect the power cord to the machine. Fig. 2-17 (2) Plug the power cord into an AC outlet. Turn the power switch on.
  • Page 36 CHAPTER 2 INSTALLATION AND BASIC OPERATION NOTE: If you are sharing one phone line with an external telephone, connect it as shown below. Fig. 2-20 NOTE: - If you are sharing one phone line with an external telephone answering device, connect it as shown below.

  • Page 37: Installing The Driver & Software

    • If it does the installation will automatically continue. • If the installation does not continue automatically, please open the installer menu again by double-clicking the setup.exe program from the root directory of the Brother CD- ROM, and continue from Step (4).
  • Page 38 If you click No the Scan key on the machine will be disabled. NOTE: Even if you select NO, you will be able to launch the Brother Control Center later to use the Scan key by double-clicking the Smart UI icon on the desktop. This loads the Brother Control Center to the task tray.
  • Page 39 If you click No the Scan keys on the machine will be disabled. NOTE: Even if you select NO, you will be able to launch the Brother Control Center later to use the Scan key by double-clicking the Smart UI icon on the desktop. This loads the Brother Control Center to the task tray.
  • Page 40 NOTE: • There will be two Brother printer drivers listed in the Printers selection. • The driver with "Printer" after the model name (ex. Brother MFC-8220 Printer) is the Brother Native Driver. The Brother Native Drivers have been installed and the installation is now complete.
  • Page 41 NOTE: • There will be two Brother printer drivers listed in the “Printers” selection. • The driver with Printer after the model name (ex. Brother MFC-8220 Printer) is the Brother Native Driver. The Brother Native Drivers have been installed and the installation is now complete.

  • Page 42: For Parallel Interface Cable Users (For Windows 95/98/98Se/Me/2000 Professional/Xp)

    • If it does the installation will automatically continue. • If the installation does not continue automatically, please open the installer menu again by double-clicking the setup.exe program from the root directory of the Brother CD- ROM, and continue from step (4).
  • Page 43 If you click No the Scan key on the machine will be disabled. NOTE: Even if you select NO, you will be able to launch the Brother Control Center later to use the Scan key by double-clicking the Smart UI icon on the desktop. This loads the Brother Control Center to the task tray.
  • Page 44 If you click No the Scan key on the machine will be disabled. NOTE: Even if you select NO, you will be able to launch the Brother Control Center later to use the Scan key by double-clicking the Smart UI icon on the desktop. This loads the Brother Control Center to the task tray.
  • Page 45 NOTE: • There will be two Brother printer drivers listed in the Printers selection. • The driver with "Printer" after the model name (ex. Brother MFC-8220 Printer) is the Brother Native Driver. The Brother Native Drivers have been installed and the installation is now complete.
  • Page 46 NOTE: • There will be two Brother printer drivers listed in the Printers selection. • The driver with "Printer" after the model name (ex. Brother MFC-8220 Printer) is the Brother Native Driver. The Brother Native Drivers have been installed and the installation is now complete.

  • Page 47: For Windows Nt Workstation Version 4.0 Users

    • If it does the installation will automatically continue. • If the installation does not continue automatically, please open the installer menu again by double-clicking the setup.exe program on the Brother CD-ROM, and continue from Step (5). When the PaperPort 8.0 SE Setup window is displayed, click Next.
  • Page 48 If you click No the Scan key on the machine will be disabled. NOTE: Even if you select NO, you will be able to launch the Brother Control Center later to use the Scan key by double-clicking the Smart UI icon on the desktop. This loads the Brother Control Center to the task tray.

  • Page 49: For Optional Nc-9100H Network Interface Users (For Windows ® 95/98/98Se/Me/Nt/2000 Professional/Xp)

    • If it does the installation will automatically continue. • If the installation does not continue automatically, please open the installer menu again by double-clicking the setup.exe program from the root directory of the Brother CD- ROM, and continue from Step (5).
  • Page 50 95/98/98SE/Me/NT/2000 Users follow step (27). NOTE: ® The Network Scanning feature is not supported in Windows 95 or NT. ® For Windows XP Users Only The Brother PC-FAX, Printer and Scanner drivers have been installed and the installation is now complete. 2-26...
  • Page 51 If you click No the Scan key on the machine will be disabled. NOTE: Even if you select NO, you will be able to launch the Brother Control Center later to use the Scan key by double-clicking the Smart UI icon on the desktop. This loads the Brother Control Center to the task tray.

  • Page 52: For Usb Interface Cable Users (For Mac Os 8.6 To 9.2 Users)

    (10) Click the Brother Laser icon you installed. On the right side of the Chooser, select the printer to which you want to print. Close the Chooser. The Brother PC-FAX Send, Printer and Scanner drivers have been installed. ® ®...

  • Page 53: For Usb Interface Cable Users (For Mac Osx 10.1/10.2.1 Or Greater Users)

    ® Insert the supplied CD-ROM for Macintosh into your CD-ROM drive. Double-click the Start Here OSX icon to install the printer driver, Scanner driver, Brother PC-FAX Send and Remote Setup program. If the language screen appears, select your ® language. (Scanning is not supported in Mac OS 10.1.)

  • Page 54: For Optional Nc-9100H Network Interface Users (For Mac Os 8.6 To 9.2 Users)

    Plug the machine into the AC power outlet. Turn the power switch on. (10) Open the Chooser from the Apple menu. (11) Click the Brother Laser (AT) icon, and then select BRN_xxxxxx_P1. Click Setup. NOTE: xxxxxx are the last six digits of the Ethernet address.
  • Page 55 MFC-8220 SERVICE MANUAL ® 3.2.8 For Optional NC-9100h Network Interface Users (For Mac OS X 10.1/10.2.1 or greater Users) (1) Make sure that the NC-9100h (Network Print/Fax Server) is installed into the MFC. (See "Optional accessories" in Chapter 13 of the User's Guide.) (2) Turn off and unplug the machine from the AC outlet and disconnect it from your ®...

  • Page 56: Chapter 3 Theory Of Operation

    MFC-8220 SERVICE MANUAL CHAPTER 3 THEORY OF OPERATION ELECTRONICS General Block Diagram Fig. 3-1 shows a general block diagram. Host Computer Control Centronics USB interface panel parallel interface Control Section Fax data Printer data NCU* Line Speaker ADF unit Scanner unit...

  • Page 57: Main Pcb Block Diagram

    CHAPTER 3 THEORY OF OPERATION Main PCB Block Diagram Fig. 3-2 shows the block diagram of the main PCB. A S I C CPU Core (SPARClite 133MHz) Oscillator 66.6MHz Reset Circuit Address Decoder DRAM Control Program + Font ROM 1MB, 4MB, 8MB Timer Network Program (1.5 MB)

  • Page 58: Main Pcb

    MFC-8220 SERVICE MANUAL Main PCB For the entire circuit diagram of the main PCB, see APPENDIX 4.1 to 4.6 ‘MAIN PCB CIRCUIT DIAGRAM’ in this manual. 1.3.1 A Fujitsu 32bit RISC CPU, SPARClite is built in the ASIC. While the CPU is driven with a clock frequency of 66.66 MHz in the user logic block, it itself runs at 133.33 MHz, which is generated...

  • Page 59: Usb

    CHAPTER 3 THEORY OF OPERATION The functions of the interface block communication with external devices are described below; 1.3.2 Stores the data received from the PC into DRAM as controlled by the DMA controller. The transmission speed is 480Mbps or 12Mbps. Fig.

  • Page 60: Rom

    MFC-8220 SERVICE MANUAL 1.3.4 Fig. 3-6...

  • Page 61: Flash Rom

    CHAPTER 3 THEORY OF OPERATION 1.3.5 Flash ROM A 32Mbit flash ROM (x 16bit) is fitted. Fig. 3-7 1.3.6 SDRAM Fig. 3-8...

  • Page 62: Optional Ram

    MFC-8220 SERVICE MANUAL 1.3.7 Optional RAM A 32bit (100 pin) DIMM can be fitted as optional RAM. The main PCB has one slot and the capacity of DIMM can be from 16MB to 128MB. Fig. 3-9 1.3.8 EEPROM The EEPROM is BR24126 type of two-wire method with a 8192 x 8bit configuration.

  • Page 63: Reset Circuit

    CHAPTER 3 THEORY OF OPERATION 1.3.9 Reset circuit The reset IC is a R3112N281C. The reset voltage is 2.8V (typ.) and the LOW period of reset is 22.4ms (typ.) Fig. 3-11 1.3.10 Engine I/O The interface with the engine PCB is by full-duplex synchronous serial method, of which transfer rate is 520kbps.

  • Page 64: 1.3.13 Scanner Control

    MFC-8220 SERVICE MANUAL 1.3.13 Scanner control Fig. 3-15 1.3.14 Power supply +5V is generated by the 3-pin regulator from astable 7V supplied from the LVPS. +5V is used for the IEEE1284 interface, the LD PCB and the engine PCB. In addition, +1.9V is generated by the 3-pin regulator from 3.3V supplied from the LVPS.

  • Page 65: Engine Pcb

    For the circuit diagram of the engine PCB, see APPENDIX 4.7 and 4.8 ‘ENGINE PCB CIRCUIT DIAGRAM’ in this manual. Sensor configuration varies according to machine types. MFC-8220 Upper cassette sensor Upper paper exit sensor : Built-in : Not built-in...

  • Page 66: Power Supply

    MFC-8220 SERVICE MANUAL Power Supply 1.5.1 Low-voltage power supply The power supply uses a switching regulation system to generate the regulated DC power (+3.3V, +8V [non regulated] and +24V), which are converted from the AC line. The regulated output is listed below;...

  • Page 67: High-Voltage Power Supply

    CHAPTER 3 THEORY OF OPERATION 1.5.2 High-voltage power supply The high-voltage power supply generates and outputs the voltages and currents for the charging, development and transfer functions. For the circuit diagram of the high-voltage power supply PCB, see APPENDIX 4.13 and 4.14 ‘HIGH-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM’...

  • Page 68: Mechanics

    MFC-8220 SERVICE MANUAL MECHANICS Overview of Printing Mechanism Heat roller Corona wire Second eject roller SCANNER UNIT Scanner motor Blade DRUM UNIT Rear cover Development roller Supply roller Paper feed pinch roller First eject roller Regist front actuator First feed pinch roller...

  • Page 69: Scanner Mechanism

    CHAPTER 3 THEORY OF OPERATION Scanner Mechanism Document front sensor actuator Nip-related parts Document ADF parts Document feed roller ASSY Document rear sensor actuator Document pressure bar Document ejection roller ASSY ADF document support (Front) ADF document output support Document take-in roller ASSY Separation roller ASSY Pinch rollers Pressure rollers...

  • Page 70: Paper Transfer

    MFC-8220 SERVICE MANUAL Paper Transfer 2.3.1 Paper supply The paper pick-up roller picks up one sheet of paper from the paper tray every time it is rotated and feeds it to the paper feed roller. First feed roller First feed pinch roller...

  • Page 71: Paper Eject

    CHAPTER 3 THEORY OF OPERATION 2.3.3 Paper eject After the printing image on the photosensitive drum is transferred onto the paper, the paper is fed to the fixing unit to fix unfixed toner onto the paper. Afterwards, the paper is ejected from the fixing unit by the first eject roller in the fixing unit. The paper eject actuator detects whether the paper is ejected correctly or not.

  • Page 72: Sensors

    MFC-8220 SERVICE MANUAL Sensors 2.4.1 Document cover sensor Detect opening and closing of the front cover. Document cover sensor Fig. 3-24 2.4.2 Toner sensors Detects if there is toner in the toner cartridge. The toner sensor at the left side emits light through the window on the left side of the toner cartridge, then the toner sensor at the right side receives it when the toner is low.

  • Page 73: Cassette Sensor / Paper Empty Sensor

    CHAPTER 3 THEORY OF OPERATION 2.4.3 Cassette sensor / Paper empty sensor Detect if the paper tray is installed. They also detect if there is paper in the paper tray. Paper empty sensor Cassette sensor PCB ASSY Cassette sensor Fig. 3-26 2.4.4 Paper eject sensor Detects if paper is ejected from the fixing unit.

  • Page 74: Document Front Sensor /Document Rear Sensor

    MFC-8220 SERVICE MANUAL 2.4.5 Document front sensor /Document rear sensor It detects that a document is placed on the ADF. (Document front sensor) It detects that a document is finished to be fed. (Document rear sensor) Document front sensor Document rear sensor Fig.

  • Page 75: Drum Unit

    CHAPTER 3 THEORY OF OPERATION Drum Unit 2.5.1 Photosensitive drum Generates the latent electrostatic image and develops the image on the drum surface. 2.5.2 Primary charger Forms a uniform charge on the drum surface. (1) Corona wire Generates the ion charge on the drum. (2) Grid Spreads the ion charge evenly over the drum surface.

  • Page 76: Exposure Stage

    MFC-8220 SERVICE MANUAL 2.7.2 Exposure stage After the drum is positively charged, it is exposed to the light emitted from the laser unit. Drum Laser beam Paper Laser beam f θ lens Laser detector Polygon mirror Laser diode Motor Lens Fig.

  • Page 77: Developing

    CHAPTER 3 THEORY OF OPERATION 2.7.3 Developing Developing causes the toner to be attracted to the electrostatic image on the drum so as to transform it into a visible image. The developer consists of a non-magnetic toner. The development roller is made of conductive rubber and the supply roller (which is also made of conductive sponge) rotate against each other.

  • Page 78: Fixing Stage

    MFC-8220 SERVICE MANUAL 2.7.5 Fixing stage The image transferred to the paper by static electricity is fixed by heat and pressure when passing through the heat roller and the pressure roller in the fixing unit. The thermistor keeps the surface temperature of the heat roller constant by detecting the surface temperature of the heat roller and turning on or off the halogen heater lamp.

  • Page 79: Chapter 4 Disassembly And Re-Assembly

    MFC-8220 SERVICE MANUAL CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY SAFETY PRECAUTIONS To avoid creating secondary problems by mishandling, follow the warnings and precautions below during maintenance work. WARNING (1) Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the printer.

  • Page 80: Disassembly Flow

    CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY DISASSEMBLY FLOW POWER CORD TOP COVER ASSY DRUM UNIT FRONT COVER ASSY PAPER TRAY LASER UNIT REAR COVER C BASE PLATE / LV INSULATION SHEET ACCESS COVER / BATTERY ASSY ENGINE PCB ASSY HIGH-VOLTAGE PS PCB ASSY CONTROL PANEL ASSY MAIN PCB ASSY LOW-VOLTAGE PS PCB ASSY...

  • Page 81: Disassembly Procedure

    MFC-8220 SERVICE MANUAL DISASSEMBLY PROCEDURE Power Cord (1) Disconnect the power cord from the machine. Machine Power cord Fig. 4-1 Drum Unit (1) Open the front cover ASSY and remove the drum unit. Drum unit Front cover ASSY Fig. 4-2...

  • Page 82: Paper Tray

    CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY Paper Tray (1) Close the front cover ASSY and pull out the paper tray. (2) Remove the paper from the paper tray. Front cover ASSY Paper tray Fig. 4-3 (3) Remove the pad holder and the separation pad spring from the paper tray. Pad holder Separation pad spring Paper tray...
  • Page 83 MFC-8220 SERVICE MANUAL NOTE: When replacing/re-assembling the pad holder ZL2 ASSY, remove the old grease and apply a suitable amount of grease referring to the figure below; Paper pick-up roller Grease: Molykote PG-662Y Paper tray (4 mm dia.ball) Fig. 4-5 (4) Remove the four bind B M4x12 Taptite screws, and then remove the paper tray front cover.
  • Page 84 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (5) Remove the two cup B M3x10 Taptite screws, and then remove the paper tray cover. Paper tray Taptite, cup B M3x10 Paper tray cover Taptite, cup B M3x10 Fig. 4-7 (6) Remove the pressure roller holder ASSY. Pressure roller holder ASSY Paper tray Flat screwdriver...
  • Page 85 MFC-8220 SERVICE MANUAL (7) Remove the pressure roller collar. (8) Remove the pressure roller shaft. Pressure roller shaft Pressure roller collar Pressure roller holder ASSY Fig. 4-9 (9) Remove the scratch spongy holder ASSY from the pressure roller holder ASSY.
  • Page 86 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (12) Remove the two cup B M2.6x5 Taptite screws. (13) Release the lock of the pressing plate using the lock lever, and then disengage the catches of the side guides R and L from the side guide rack. Taptite, cup B M2.6x5 Side guide L Taptite, cup B M2.6x5...
  • Page 87 MFC-8220 SERVICE MANUAL (15) Unhook the two catches (A) of the pressure plate while pulling the plastic frame outwards, then unhook the other two catches (B) of the plate while pulling the plastic frame outwards to remove the pressure plate ASSY.
  • Page 88 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY NOTE: When re-assembling the pressure plate ASSY, ensure that the paper indicator arm is under the pressure plate. CAUTION: When unhooking the catches to remove the pressure plate, do not bend the pressure plate, gently ease the plastic cover. If the pressure plate is deformed, paper feeding problems may occur.
  • Page 89 MFC-8220 SERVICE MANUAL (19) Remove the cup B M3x8 Taptite screw, and then remove the side guide gear and the friction spring. (20) Remove the two side guide racks. Taptite, cup B M3x8 Side guide gear Side guide rack Friction spring Side guide rack Fig.
  • Page 90 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY NOTE: • When re-assembling the side guide racks, they should both be aligned so that the wide end of the racks are in line with the inside edge of the paper guide release slots in the tray before refitting the spring and gear.

  • Page 91: Rear Cover C

    MFC-8220 SERVICE MANUAL (24) Remove the paper rear guide. Paper tray Paper rear guide Fig. 4-20 Rear Cover C (1) Remove the bind B M4x12 Taptite screw, and then remove the rear cover C. Rear cover C Taptite, bind B M4x12 Fig.

  • Page 92: Access Cover / Battery Assy

    CAUTION: • There is a danger of explosion if the battery is incorrectly replaced. • Use Brother genuine spare part when you replace the battery. • Do not disassemble, recharge or dispose of in fire. • Used battery should be disposed of according to local regulations.
  • Page 93 MFC-8220 SERVICE MANUAL (5) Cut the binding band which secures the battery ASSY to the access plate, and then remove the battery ASSY. Binding band Battery ASSY Access plate Fig. 4-24 4-15...

  • Page 94: Control Panel Assy

    CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY Control Panel ASSY (1) Remove the two pins, and then remove the control panel ASSY. Control panel ASSY Fig. 4-25 (2) Disconnect the connector from the control panel ASSY. Control panel ASSY Connector Fig. 4-26 4-16...
  • Page 95 MFC-8220 SERVICE MANUAL (3) Remove the cup B M3x6 Taptite screw, and then remove the spring plate, ADF front. (4) Remove the separation rubber, rubber holder and rubber holder spring. Rubber holder spring Taptite, cup B M3x6 Spring plate ADF, front...
  • Page 96 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (6) Open the right and left bosses, and then remove the document hold ASSY. Hooks Boss Control panel ASSY Document hold ASSY Boss Fig. 4-29 (7) Remove the three cup B M3x8 Taptite screws. (8) Release the three hooks, and then remove the paper feed chute. Taptite, cup B M3x8 Paper feed chute Hook...
  • Page 97 MFC-8220 SERVICE MANUAL (9) Remove the actuator F. Paper feed chute Actuator F Fig. 4-31 (10) Release the lock of the connector, remove the cable from the panel PCB ASSY, and then remove the FPC key. NOTE: • After disconnecting flat cable(s), check that each cable is not damaged at its end or short-circuited.
  • Page 98 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (11) Release the lock, and then disconnect the cable of the LCD and the connector of the back light PCB ASSY. NOTE: • After disconnecting flat cable(s), check that each cable is not damaged at its end or short-circuited.

  • Page 99: Document Scanner

    MFC-8220 SERVICE MANUAL (14) Release the two hooks, and then remove the LCD. (15) Release the three hooks, and then remove the back light PCB ASSY. Back light PCB ASSY LCD holder Hooks Hooks Fig. 4-35 Document Scanner (1) Remove the four screws, and then remove the document chute ASSY.
  • Page 100 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (3) As moving the hook upward, remove the CIS unit. Hook Document chute ASSY Hooks CIS unit Fig. 4-37 (4) Release the hook of the gear cover, and then remove the gear cover. (5) Remove the two screws, and then remove the LF ground plate spring. (6) Release the hook, and then remove the ejection roller.
  • Page 101 MFC-8220 SERVICE MANUAL (7) Release the hook, and then remove the LF roller. LF roller Hook Document chute ASSY Fig. 4-39 (8) Remove the ejection pinch roller. Ejection pinch roller Document chute ASSY Fig. 4-40 4-23...
  • Page 102 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (9) Remove the ejection roller B4 from the ejection pinch roller. Ejection pinch roller Ejection roller B4 Fig. 4-41 (10) Remove the pan (S/P washer) M3x6 screw. (11) Release the hook by rotating the scanning motor, and then remove the scanning motor. Screw, pan (S/P washer) M3x6 Hook Scanning motor...
  • Page 103 MFC-8220 SERVICE MANUAL (12) Release the hook, and then remove the two document separation roller. Document separation roller Document separation roller Hook Fig. 4-43 (13) Remove the LF ground spring. LF ground spring Fig. 4-44 4-25...

  • Page 104: Outer Chute

    CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY Outer Chute (1) Remove the outer chute. Hook Outer Chute Fig. 4-45 (2) Remove the outer chute tray. Outer Chute Outer chute tray Fig. 4-46 4-26...

  • Page 105: Rear Cover L/R

    MFC-8220 SERVICE MANUAL Rear Cover L/R (1) Remove the two bind B M4x12 Taptite screws, and then remove the rear cover L. (2) Remove the two bind B M4x12 Taptite screws, and then remove the rear cover R. Taptite, bind B...

  • Page 106: Side Cover L/R

    CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY 3.10 Side Cover L/R (1) Remove the three bind B M4x12 Taptite screws, and then remove the side cover R. Taptite, bind B M4x12 Side cover R Taptite, bind B M4x12 Taptite, bind B M4x12 Taptite, bind B M4x12 Fig.

  • Page 107: Top Cover Assy

    MFC-8220 SERVICE MANUAL 3.11 Top Cover ASSY (1) Disconnect the four connectors. Main PCB ASSY Connector (HS holder) Connector (CIS) Connector (Speaker) Connector (Control panel) Fig. 4-50 (2) Release the hook, and then remove the speaker hold spring and the speaker.
  • Page 108 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (3) Remove the two screws, release the four hooks, and then remove the top cover ASSY. Screw Top cover ASSY Hooks Hook Screw Hook Fig. 4-52 (4) Remove the two cup B M3x10 Taptite screws and two pins, and then remove the handset holder ASSY.
  • Page 109 MFC-8220 SERVICE MANUAL (5) Release the four hooks, and then remove the handset holder upper. Handset holder upper Hooks Hooks Handset holder lower Fig. 4-54 (6) Release the hook, and then remove the hook PCB ASSY. Hook PCB ASSY Hook Handset holder lower Fig.
  • Page 110 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (7) Remove the four bind B M4x12 Taptite screws. (8) Release the two hooks, and then remove the inner chute. Inner chute Taptite, bind B M4x12 Taptite, bind B M4x12 Hook Taptite, bind B M4x12 Top cover ASSY Hook Fig.
  • Page 111 MFC-8220 SERVICE MANUAL (10) Remove the corrugation pinch roller L, R and pinch roller holder. Corrugation pinch roller L, R Pinch roller holder Inner chute Fig. 4-58 (11) Remove the paper stopper and the paper stopper S. Paper stopper Paper stopper S Fig.

  • Page 112: Front Cover Assy

    CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY 3.12 Front Cover ASSY (1) Release the link. (2) Remove the front cover ASSY. Frame Front cover ASSY Link Fig. 4-60 4-34...

  • Page 113: Ncu

    MFC-8220 SERVICE MANUAL 3.13 (1) Disconnect the connector. (2) Remove the two cup S M3x6 Taptite screws, and then remove the NCU unit. Hook NCU harness Main PCB ASSY NCU unit Taptite, cup S M3x6 Hook Fig. 4-61 (3) Remove the cup S M3x6 Taptite screw, and then remove the NCU shield cover.

  • Page 114: Fixing Unit

    CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY 3.14 Fixing Unit (1) Disconnect the heater harness and thermistor harness. (2) Remove the bind B M4x12 Taptite screw and the shoulder screw, and then remove the fixing unit. Fixing unit Shoulder screw Heater harness Taptite, bind B M4x12 Thermistor harness Fig.
  • Page 115 MFC-8220 SERVICE MANUAL (4) Remove the three cup B M3x10 Taptite screws, and then remove the star wheel holder. Fixing unit Pins Taptite, cup B M3x10 Star wheel holder Fig. 4-65 (5) Remove the cup B M3x12 Taptite screw. (6) Release the thermistor ASSY harness from the four hooks.
  • Page 116 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY NOTE: When re-assembling the thermistor to the FU frame upper, ensure the direction of the thermistor is correct referring to the figure below; FU frame upper Thermistor Thermistor Taptite, cup B M3x12 Fig. 4-67 (8) Remove the two cup B M3x20 Taptite screws from the FU frame upper. (9) Release the hooks, and then remove the FU frame upper from the FU frame lower.
  • Page 117 MFC-8220 SERVICE MANUAL (10) Remove the two pan (S/P washer) M26x8 Taptite screws. (11) Remove the heat roller 25. (12) Remove the halogen lamp. Heat roller 25 Screw, pan (S/P washer) M26x8 Colored side 115V:Orange Washer, plain 26 220V:Black Halogen lamp...
  • Page 118 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (13) Remove the HR bearing 25. (14) Remove the HR gear 34. (15) Remove the HR retaining ring 25. (16) Remove the heat roller washer 25. (17) Remove the HR bearing 25. HR bearing 25 HR bearing 25 Heat roller 25 Heat roller washer 25...
  • Page 119 MFC-8220 SERVICE MANUAL • When re-assembling the heat roller 25 to the FU frame upper, ensure you do not damage the heat roller 25 with the four separate claw ASSY on the FU frame upper. Heat roller 25 Separate claw ASSY...
  • Page 120 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (19) Remove the three cleaner spring S. (20) Remove the three cleaner pinch roller ASSY S. (21) Remove the cleaner spring L. (22) Remove the cleaner pinch roller ASSY L. Cleaner spring S Cleaner spring L Cleaner pinch roller ASSY S Cleaner spring S Cleaner pinch roller ASSY L...
  • Page 121 MFC-8220 SERVICE MANUAL (23) Disconnect the connector for the eject sensor harness from the thermistor relay PCB ASSY. (24) Release the eject sensor harness from the three hooks. (25) Remove the bind B M3x10 Taptite screw, and then remove the eject sensor PCB ASSY.
  • Page 122 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY NOTE: When re-assembling the paper eject actuator and the eject actuator spring to the FU frame lower, ensure the paper eject actuator is seated correctly in the locating channel referring to the figure below; FU frame lower Eject actuator spring Paper eject actuator Fig.

  • Page 123: Laser Unit

    MFC-8220 SERVICE MANUAL 3.15 Laser Unit (1) Remove the filter, and then remove the cup S M3x8 Taptite screw and the air duct. Hook Filter Air duct Taptite, cup S M3x8 Hook Fig. 4-81 (2) Disconnect the LD harness 5P from the laser unit.

  • Page 124: Main Pcb Assy

    CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (5) Remove the shutter arm C. Shutter arm C Frame L Fig. 4-83 3.16 Main PCB ASSY (1) Disconnect the LD harness 5P. NOTE: • After disconnecting flat cable(s), check that each cable is not damaged at its end or short-circuited.
  • Page 125 MFC-8220 SERVICE MANUAL (3) Remove the three pan M3x6 screws. (4) Remove the five cup S M3x6 Taptite screws, and then remove the main PCB ASSY. Screw, pan M3x6 Taptite, cup S M3x6 Main PCB ASSY Taptite, cup S M3x6 Fig.

  • Page 126: Base Plate / Lv Insulation Sheet

    CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY 3.17 Base Plate / LV Insulation Sheet (1) Remove the eight bind B M4x12 Taptite screws. (2) Remove the four cup S M3x6 Taptite screws. (3) Remove the pan (washer) M3.5x6 Taptite screw, and then remove the ground wire. (4) Remove the base plate.

  • Page 127: Engine Pcb Assy

    MFC-8220 SERVICE MANUAL 3.18 Engine PCB ASSY (1) Disconnect the connectors. NOTE: • After disconnecting flat cable(s), check that each cable is not damaged at its end or short-circuited. • When connecting flat cable(s), do not insert them at an angle. After insertion, check that the cables are not at an angle.

  • Page 128: High-Voltage Ps Pcb Assy

    CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY 3.19 High-voltage PS PCB ASSY (1) Remove the bind B M4x12 Taptite screw, and then remove the high-voltage PS PCB ASSY. (2) Disconnect the flat cable from the high-voltage PS PCB ASSY. NOTE: • After disconnecting flat cable(s), check that each cable is not damaged at its end or short-circuited.
  • Page 129 MFC-8220 SERVICE MANUAL (3) Remove the two bind B M4x12 Taptite screws, and then remove the inlet holder. (4) Remove the bind B M4x12 Taptite screw, and then remove the SW holder. (5) Remove the fan motor 60 unit. (6) Remove the low-voltage PS PCB.

  • Page 130: Paper Feeder

    CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY 3.21 Paper Feeder (1) Remove the bush R. (2) Remove the paper pick-up roller ASSY. (3) Remove the two roller collars from the paper pick-up roller ASSY. Roller collar Paper pick-up roller ASSY Roller collar Bush R Fig.
  • Page 131 MFC-8220 SERVICE MANUAL (6) Remove the PE actuator and the CA actuator. CA actuator PE actuator Frame Fig. 4-95 (7) Remove the spring, extension P/R from the gear 63P/R. (8) Remove the gear 63P/R. (9) Remove the ground wire from the conductor bearing.
  • Page 132 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (10) Remove the bush L from the P/R shaft. (11) Remove the P/R shaft. P/R shaft Bush L Fig. 4-97 (12) Remove the idle gear 22. (13) Remove the middle roller gear. (14) Remove the bind B M3x10 taptite screw and the conductor bearing. (15) Remove the 1st F/R shaft.
  • Page 133 MFC-8220 SERVICE MANUAL (16) Remove the two cup S M3x6 Taptite screws and the four bind B M4x12 Taptite screws. (17) Remove the front chute ASSY. Taptite, bind B M4x12 Front chute ASSY Taptite, cup S M3x6 Taptite, bind B M4x12 Taptite, cup S M3x6 Fig.
  • Page 134 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (22) Remove the two bind B M4x12 Taptite screws, and then remove the chute 3. Taptite, bind B M4x12 Chute 3 Fig. 4-101 (23) Remove the feed roller gear. (24) Remove the bearing F/R. (25) Remove the feed roller gear shaft. Bearing F/R Hook Feed roller gear shaft...
  • Page 135 MFC-8220 SERVICE MANUAL (26) Release the hook of the bearing 5, and then slide the feed roller ASSY in the direction of the arrow. (27) Remove the feed roller ASSY. (28) Remove the joint 5 and the bearing 5 from the feed roller ASSY.
  • Page 136 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY Chute cover (29) Remove the chute cover. Hook Hook Fig. 4-105 (30) Remove the regist front actuator and regist front actuator spring. (31) Remove the regist rear actuator and regist rear actuator spring. Regist front actuator Regist front actuator spring Regist rear actuator Regist rear actuator spring...

  • Page 137: Frame L / Drive Unit

    MFC-8220 SERVICE MANUAL 3.22 Frame L / Drive Unit (1) Remove the main PCB sheet from the main frame L unit. (2) Remove the four bind B M4x12 Taptite screws. (3) Remove the two bind B M3x10 Taptite screws, and then remove the main frame L unit.
  • Page 138 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (4) Remove the cup S M3x6 Taptite screw, and then remove the ground spring. (5) Remove the six bind B M4x12 Taptite screws. (6) Remove the cup S M3x6 Taptite screw. (7) Remove the cup S M3x6 Taptite screw, and then remove the sub gear plate. (8) Remove the LD harness 5P from the drive unit.
  • Page 139 MFC-8220 SERVICE MANUAL (11) Remove the four cup S M3x6 Taptite screws, and then remove the main motor ASSY. (12) Remove the develop joint and joint spring from the drive unit. (13) Release the two hooks from the develop joint, and remove the joint stopper.
  • Page 140 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (16) Remove the bind B M3x10 Taptite screw. (17) Remove the P/R solenoid ASSY, the P/R solenoid lever and the solenoid release spring P/R. (18) Remove the bind B M3x10 Taptite screw. (19) Remove the F/R solenoid ASSY and solenoid release spring F/ R. Solenoid release spring F/R F/R solenoid...

  • Page 141: Thermistor Assy

    MFC-8220 SERVICE MANUAL 3.23 Thermistor ASSY (1) Remove the thermistor ASSY. Frame L Thermistor ASSY Fig. 4-114 3.24 Fan Motor 60 Unit LV / Fan Motor 60 Unit (1) Remove the fan motor 60 unit LV and the fan motor 60 unit.

  • Page 142: Frame R

    CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY 3.25 Frame R (1) Remove the four bind B M4x12 Taptite screws. (2) Remove the cup S M3x16 Taptite screw. (3) Remove the two cup S M3x6 Taptite screws. (4) Remove the main frame R unit. Main frame R unit Taptite, bind B M4x12 Under bar...
  • Page 143 MFC-8220 SERVICE MANUAL (5) Remove the two bind B M4x12 Taptite screws. (6) Remove the cup S M3x6 Taptite screw. (7) Remove the drum spring R. (8) Remove the FG plate. Main frame R Taptite, cup S M3x6 FG plate...

  • Page 144: Packing

    CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY PACKING Quick set up guide User’s manual CD-ROM ADF document output support ADF document support Handset curled cord Telephone line cord plug Telephone handset Power cord Telephone line cord Polystyrene foam ASSY Drum unit ASSY Polystyrene foam ASSY Machine Polystyrene foam ASSY...

  • Page 145: Guidelines For Lead Free Solder

    Relatively poor wettability, rough surface (bumps are likely to be formed), and solder dragging Poor solder elevation Poor thermal conductivity and heat resistant (difficult to melt) 2. Metal composition & wire solder The metal composition of lead-free solder allowed for use on PCBs for Brother's products is following. Compositon Manufacture Origin...
  • Page 146 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY 5. Precautions for hand soldering operations 1) Soldering operations using lead-free solder are basically the same as those using tin- lead solder, however, due to the lead-free solder's characteristics of being difficult to melt, wet, and spread, as well as being hard, a soldering iron needs to be applied for a longer period of time than when soldering with conventional tin-lead solder.
  • Page 147 MFC-8220 SERVICE MANUAL 6. Soldering irons When soldering is performed manually using lead-free solder, a soldering iron that has little reduction in its temperature needs to be used. This refers to a soldering iron that has a smaller degree of decrease in the temperature at the soldering iron's tip, such as when the soldering iron is applied to the base metal or solder is supplied, and the temperature is soon returned to the specified temperature.

  • Page 148: Screw Torque List

    CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY SCREW TORQUE LIST Main Body Parts code Parts name Location Pcs. Tightening torque N ⋅ m (Kgf ⋅ cm) NCU PCB ASSY 087320-616 Taptite, cup S M3x6 0.686 ± 0.098 (7 ± 1) NCU shield cover NCU shield plate Main PCB ASSY 0.686 ±...

  • Page 149: Lubrication

    MFC-8220 SERVICE MANUAL LUBRICATION Flame L Gear 20 center F/R Idle gear 16A Gear 17 planetary Shaft idle gear 16 Gear 45 arm F/R Fuser drive gear Shaft idle gear 16 Gear 25/130 Gear, 40/54Y Idle gear 16A Pendulum gear 22...
  • Page 150 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY Eject roller ASSY * EM4: Molykote EM-D110 4 mm dia. ball 4-72...

  • Page 151: Harness Routing

    MFC-8220 SERVICE MANUAL HARNESS ROUTING Toner sensor PCB Fan motor 60 unit Toner sensor PCB Fan motor 60 unit Front Front Front Front Engine PCB ASSY Engine PCB ASSY Fan motor 60 unit LV Laser unit (Polygon motor harness) Fan motor 60 unit LV...
  • Page 152 CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY Laser unit (LD harness 5P) Panel PCB Panel PCB Laser unit Main PCB ASSY Front Front Panel PCB Thermistor Main PCB ASSY Thermistor Main PCB ASSY CIS unit Front CIS unit Scanning motor Scanning motor Front Front Front...
  • Page 153 MFC-8220 SERVICE MANUAL Speaker Main PCB ASSY Speaker Front Engine PCB ASSY Main PCB ASSY Front Front Main PCB ASSY LVPS PCB ASSY Front Handset holder ASSY (Hook PCB ASSY) Front Handset holder ASSY Hook PCB ASSY Main PCB ASSY...

  • Page 154: Chapter 5 Periodic Maintenance

    • For best performance, use only genuine Brother toner. The machine should be used only in a clean, dust-free environment with adequate ventilation. •...
  • Page 155 CHAPTER 5 PERIODIC MAINTENANCE <Change Drum message> If the LCD shows the message below, it means the drum unit is near the end of its life. We recommend that you replace the drum unit with a new one before there is a noticeable deterioration in the print quality.
  • Page 156 MFC-8220 SERVICE MANUAL (3) While pressing the blue lock lever, take the toner cartridge out of the drum unit. Fig. 5-4 (4) Unpack the new drum unit. (5) Put the toner cartridge in the new drum unit until you hear it lock into place with a click.

  • Page 157: Toner Cartridge

    CHAPTER 5 PERIODIC MAINTENANCE Toner Cartridge Life expectancy: 6,500 pages / high-yield toner cartridge 3,300 pages / standard cartridge (When printing A4 size paper at 5% print coverage) NOTE: • The life of a new toner cartridge varies according to a print coverage ratio and a print job. In the case of single-sided printing of typical business documents (at 5% print coverage) on A4 size paper, up to 3,300 pages (standard cartridge) or 6,500 pages (high-yield toner cartridge) can be printed.
  • Page 158 MFC-8220 SERVICE MANUAL CAUTION: • It is recommended to place the drum unit assembly on a piece of disposable paper or cloth in case you accidentally spill or scatter toner. • To prevent damage to the machine from static electricity, do not touch the electrodes shown in the figure below.
  • Page 159 • If an unpacked drum unit is subjected to excessive direct sunlight or room light, the unit may be damaged. • Use a Brother genuine toner cartridge which is specially formulated to ensure top print quality. • Printing with a 3rd party toner or toner cartridge may reduce not only the printing quality but also the quality and life of the machine itself.
  • Page 160 MFC-8220 SERVICE MANUAL <Initialization of the Developing Bias> If running the machine at a constant developing bias voltage, because of the toner property print density is light at the beginning and gradually increased as the printing is performed. correct this problem and...
  • Page 161 CHAPTER 5 PERIODIC MAINTENANCE In order to deal with this unexpected usage and maintain the steady print density, the machine can be initialized the developing bias compulsorily in the following procedure. <Initialization Procedure> (1) Open the front cover. (2) Press the buttons in the following order. “Clear/Back”, “*”, “0 (zero)”, “0 (zero)” (3) Close the front cover.

  • Page 162: Periodical Replacement Parts

    MFC-8220 SERVICE MANUAL PERIODICAL REPLACEMENT PARTS Periodical replacement parts are the parts to be replaced periodically to maintain product quality. These parts would affect the product quality greatly if they lost their function even if they do not appear to be damaged or there is no change in their appearance.) The periodical replacement parts listed below should be replaced at the service center referring to the service life.

  • Page 163: Fixing Unit

    CHAPTER 5 PERIODIC MAINTENANCE Fixing Unit <Disassembly Procedure> 1) Disconnect the power cord from the machine. Machine Power cord Fig.5-13 2) Close the front cover ASSY and pull out the paper tray. Front cover ASSY Paper Tray Fig.5-14 5-10...
  • Page 164 MFC-8220 SERVICE MANUAL 3) Remove the bind B M4x12 Taptite screw, and then remove the rear cover C. Rear cover C Taptite, bind B M4x12 Fig.5-15 4) Remove the outer chute. Hook Outer chute Fig.5-16 5-11...
  • Page 165 CHAPTER 5 PERIODIC MAINTENANCE 5) Remove the two bind B M4x12 Taptite screws, and then remove the rear cover L. 6) Remove the two bind B M4x12 Taptite screws, and then remove the rear cover R. Taptite, bind B M4x12 Rear cover R Taptite, bind B M4x12 Hook...
  • Page 166 MFC-8220 SERVICE MANUAL 8) Disconnect the heater harness and thermistor harness. 9) Remove the bind B M4x12 Taptite screw and the shoulder screw, and then remove the fixing unit. Fixing unit Shoulder screw Heater harness Taptite, bind B M4x12 Thermistor harness Fig.5-19...
  • Page 167 CHAPTER 5 PERIODIC MAINTENANCE <Assembly Procedure> (1) Mount the fixing unit using the bind B M4x12 Taptite screw and the shoulder screw. (2) Insert the heater harness and the thermistor harness. Fixing unit Shoulder screw Heater harness Taptite, bind B M4x12 Thermistor harness Fig.5-20 (3) Mount the NCU unit using the two cup S M3x6 Taptite screws.
  • Page 168 MFC-8220 SERVICE MANUAL (4) Mount the rear cover L using the two bind B M4x12 Taptite screws. (5) Mount the rear cover R using the two bind B M4x12 Taptite screws. Taptite, bind B M4x12 Rear cover R Taptite, bind B M4x12...
  • Page 169 CHAPTER 5 PERIODIC MAINTENANCE (7) Mount the rear cover C using the bind B M4x12 Taptite screw. Rear cover C Taptite, bind B M4x12 Fig.5-24 (8) Insert the paper tray. Front cover ASSY Paper Tray Fig.5-25 5-16...
  • Page 170 MFC-8220 SERVICE MANUAL (9) Insert the power cord to the machine. Machine Power cord Fig.5-26 5-17...

  • Page 171: Paper Feeding Kit

    CHAPTER 5 PERIODIC MAINTENANCE Paper Feeding Kit <Disassembly Procedure> 1) Disconnect the power cord from the machine. Machine Power cord Fig.5-27 2) Close the front cover ASSY and pull out the paper tray. Front cover ASSY Paper tray Fig.5-28 5-18...
  • Page 172 MFC-8220 SERVICE MANUAL 3) Remove the pad holder and the separation pad spring from the paper tray. Pad holder Separation pad spring Fig.5-29 4) Turn the machine over. 5) Remove the bush R. 6) Remove the paper pick-up roller ASSY.
  • Page 173 CHAPTER 5 PERIODIC MAINTENANCE <Assembly Procedure> (1) Mount the two roller collars to the paper pick-up ASSY. (2) Mount the paper pick-up roller ASSY. (3) Mount the bush R. (4) Turn the machine back to the original orientation. Roller collar Paper pick-up roller ASSY Roller collar Bush R...
  • Page 174 MFC-8220 SERVICE MANUAL (6) Insert the paper tray. Front cover ASSY Paper Tray Fig.5-33 (7) Insert the power cord to the machine. Machine Power cord Fig.5-34 5-21...

  • Page 175: Periodical Cleaning

    CHAPTER 5 PERIODIC MAINTENANCE PERIODICAL CLEANING Clean the following parts periodically to avoid any machine problems or print image defects. CAUTION: While drum unit and scanner window cleaning basically can be implemented by the end user, the electrical terminals inside the machine and on the drum unit should be cleaned by a service technician.

  • Page 176: Cleaning The Drum Unit

    MFC-8220 SERVICE MANUAL Cleaning the Drum Unit When replacing the drum unit or toner cartridge with a new one, be sure to clean the drum unit. Turn off the power switch and unplug the power cord. Press the front cover release button, and then open the front cover.

  • Page 177: Cleaning The Electrical Terminals

    CHAPTER 5 PERIODIC MAINTENANCE Gently wipe the scanner window with a soft dry cloth. Fig. 5-37 Re-install the drum unit into the machine. Close the front cover. Plug in the power cord, and then turn on the power switch. CAUTION: •...

  • Page 178: Mtbf / Mttr

    MFC-8220 SERVICE MANUAL MTBF / MTTR The meantime between failure (MTBF) and the meantime to repair (MTTR) for this machine are as follows; MTBF: Up to 4,000 hours MTTR: Average 30 minutes except the periodical maintenance parts (the Paper Feeding Kit) and the machine control boards whose MTTR is average 10 minutes.

  • Page 179: Chapter 6 Troubleshooting

    MFC-8220 SERVICE MANUAL CHAPTER 6 TROUBLESHOOTING INTRODUCTION Initial Check (1) Operating environment Check if: • The source voltage stays within ±10% from the rated voltage shown on the rating plate. • The machine is installed on a solid, level surface.

  • Page 180: Warnings For Maintenance Work

    CHAPTER 6 TROUBLESHOOTING (4) Others Condensation: When the machine is moved from a cold room into a warm room in cold weather, condensation may occur inside the machine, causing various problems as listed below: • Condensation on the optical surfaces such as the scanning mirror, lenses, the reflection mirror and the protection glass may cause the print image to be light.

  • Page 181: Identify The Problem

    MFC-8220 SERVICE MANUAL Identify the Problem If you encounter any machine error or problem, first identify it referring to the chart below, then see the appropriate section. NOTE: The following troubleshooting sections contain both the actions which users should take or check and the ones which service technicians should perform.

  • Page 182: Error Message

    CHAPTER 6 TROUBLESHOOTING ERROR MESSAGE Error Message on the LCD If a machine error occurs, the machine emits an audible alarm (continuous beeping) for approximately 4 seconds and shows the error message on the LCD. For the error message, see below. Error Message Cause Action...
  • Page 183 MFC-8220 SERVICE MANUAL Error Message Cause Action Out of Memory You cannot store data in the (Fax sending in process) memory. Press Stop/Exit button and wait until the other operations in progress finish and then try again. - OR - Clear the data in the memory.

  • Page 184: Error Codes Shown In The "Machine Error X X" Message

    CHAPTER 6 TROUBLESHOOTING Error Codes Shown in the “MACHINE ERROR X X” message. If the LCD shows the "PLS OPEN COVER" message, you can display the detailed error code following the MACHINE ERROR, by using the maintenance-mode function code 82 described in Chapter 7, Section 3.16.
  • Page 185 MFC-8220 SERVICE MANUAL Error Error factor Check: Code (Hex) • Thermistor ASSY In-casing temperature sensor harness • Main PCB disconnected or broken. • Engine PCB Main motor does not synchronize with the • Main motor reference clock. ASIC error on the main PCB.
  • Page 186 CHAPTER 6 TROUBLESHOOTING Error Error factor Check: Code (Hex) Not used. (Less than 50% of white level date is incorrect.) • CIS Not used. (CIS home position sensor • Driver PCB remains OFF. In other words, the CIS unit • Main PCB does not return to the home position.) Not used.
  • Page 187 MFC-8220 SERVICE MANUAL Error Error factor Check: Code (Hex) • Main PCB Modem error. • Regist sensor Out of paper. • Main PCB • Driver PCB Write error in EEPROM. • CIS Data scanning error during transmission. • Main PCB Document removed at phase B.

  • Page 188: Paper Problems

    CHAPTER 6 TROUBLESHOOTING PAPER PROBLEMS Paper Loading Problems First, make sure that you are using paper that meets Brother recommended paper specifications. See 2.3 “Paper” in Chapter 1. Problem Remedy • If there is paper in the paper tray, make sure it is straight. If The machine does not feed paper.

  • Page 189: Original Jams

    MFC-8220 SERVICE MANUAL Original Jams Based upon where the original or printed sheet is jammed, follow the appropriate set of instructions to remove it. 3.2.1 Original is jammed in the ADF (Automatic document feeder) (1) Open the control panel cover.
  • Page 190 CHAPTER 6 TROUBLESHOOTING (3) Press the front cover release button and then open the front cover. (4) Pull out the drum unit. Pull the jammed paper up and out of the machine. If you cannot remove the drum unit easily at this time, do not use extra force. Instead, pull the edge of the jammed paper from the paper tray.
  • Page 191 MFC-8220 SERVICE MANUAL (5) Open the back output tray. Pull the jammed paper out of the fixing unit. If the paper jam can be cleared, go to Step 7. Fig. 6-5 NOTE: If you have to pull the paper toward the back of the machine, the fuser may get dirty with toner powder and it may scatter on the next printouts.
  • Page 192 CHAPTER 6 TROUBLESHOOTING (7) Close the jam clear cover. Close the back output tray. (8) Push the lock lever down and take the toner cartridge out of the drum unit. Take out the jammed paper if there is any inside the drum unit. Fig.

  • Page 193: Causes & Countermeasures

    MFC-8220 SERVICE MANUAL 3.3.2 Causes & countermeasures The causes for paper jam problems vary depending on the location of the paper jam. When a paper jam occurs inside the machine, you have to find the location of the paper jam first, remove the jammed paper and then take the appropriate countermeasure referring to the table below;...

  • Page 194: Paper Feeding Problems

    CHAPTER 6 TROUBLESHOOTING Paper Feeding Problems Even if the paper is printed and ejected without any problems such as paper jams, paper feeding problems below may appear. Users can clear these problems by following the ‘User Check’ items for each problem. Even if the same problem occurs again, follow the procedures in the table below.
  • Page 195 MFC-8220 SERVICE MANUAL Curl or Wave User Check (1) Check the paper used meets the recommended paper specifications. Both high temperature and humidity will cause paper to curl. (2) If the machine is used infrequently, the paper may have sat for too long in the paper tray . Turn over the stack of paper in the paper tray .

  • Page 196: Software Setting Problems

    CHAPTER 6 TROUBLESHOOTING SOFTWARE SETTING PROBLEMS The machine may not print the data correctly if there are incorrect software settings. “There was an error writing to LPT1: (or BRUSB) for the machine” error message appears. User Check (1) Check that the printer cable is not damaged or broken. Check also that the cable is connected to the correct interface connectors of both the machine and PC.
  • Page 197 Check that the USB cable Volumes tab? used is the shielded twisted • Product ID: 0x16 pair type and 5 m or less. • Vender: Brother International Try to connect the machine Corporation (or 0x4f9) and PC with the USB cable directly.

  • Page 198: Malfunctions

    CHAPTER 6 TROUBLESHOOTING MALFUNCTIONS When taking countermeasures for malfunctions as described in this section, check connectors for contact failure before measuring the voltage at the specified connector pins. No AC power supplied Possible cause Step Check Result Remedy Supply voltage Is the correct voltage present Inform the user that the at the outlet?
  • Page 199 MFC-8220 SERVICE MANUAL Main motor failure Possible cause Step Check Result Remedy Failure of Is the connection of connector Reconnect the connector. connector CN9 on the engine PCB correct? Main motor Is the problem solved by Replace the main motor.
  • Page 200 CHAPTER 6 TROUBLESHOOTING Fixing heater temperature failure Possible cause Step Check Result Remedy Poor thermistor Is the contact of connector Reconnect the connector. harness contact CN7 on the engine PCB good? Blown thermal Remove the fixing unit and Replace the fixing unit. fuse measure the resistance of the thermal fuse.
  • Page 201 Main PCB Is it possible to copy? Replace the main PCB. failure Software bug Does this problem appear Inform the Brother office of when printing specific data or the used specific data, printing under a specific machine condition and environment? system environment.

  • Page 202: Troubleshooting Of The Control Panel

    CHAPTER 6 TROUBLESHOOTING TROUBLESHOOTING OF THE CONTROL PANEL Nothing is displayed on the LCD. User Check (1) Verify if the power switch is turned off. Possible cause Step Check Result Remedy Main PCB and control panel Fix the connector properly. Connection PCB are properly connected.
  • Page 203 MFC-8220 SERVICE MANUAL The control panel does not work. User Check (1) No Possible cause Step Check Result Remedy Any key on control panel is Clean up the panel cover, or Key sticking stuck. remove the burrs from panel cover and panel keys.
  • Page 204 CHAPTER 6 TROUBLESHOOTING TROUBLESHOOTING OF TELEPHONE/FAX FUNCTIONS FAX transmission cannot be made/Telephone call cannot be placed User Check (1) Verify that the telephone cord is securely inserted. Possible cause Step Check Result Remedy Dialing signal (PB or DP) Check the dialing mode Dialing mode comes out normally in each setting at customer's again.
  • Page 205 MFC-8220 SERVICE MANUAL Speed dialing and One-touch dialing can't be used. Possible cause Step Check Result Remedy Speed dialing, A fax transmission can be Replace the main PCB. One-touch made using the key, ten? dialing Dialing signal (PB or DP)
  • Page 206 CHAPTER 6 TROUBLESHOOTING No bell ring. Possible cause Step Check Result Remedy Ring delay is set to "0". Set the ring delay to other Ring delay than "0". Ring volume is set to "OFF". Set the ring volume to other Ring volume than "OFF".
  • Page 207 MFC-8220 SERVICE MANUAL Speaker is silent during on-hook dialing. Possible cause Step Check Result Remedy Main PCB and speaker are Fix the connection properly. Connection properly connected. between main PCB and speaker Replacement of speaker Replace the speaker with a Speaker solves the problem.
  • Page 208 CHAPTER 6 TROUBLESHOOTING No dial tone Possible cause Step Check Result Remedy Main PCB and NCU PCB are Fix the connection properly. Connection properly connected. between main PCB and NCU Harness wire is damaged. Replace the harness with a Harness normal part.

  • Page 209: Image Defects

    MFC-8220 SERVICE MANUAL IMAGE DEFECTS Image Defect Examples I-1 Light I-2 Dark I-2 Dark I-3 Completely blank I-5 Dirt on back of paper I-4 All black I-6 Black vertical I-6 Black vertical I-7 Black horizontal I-8 Black vertical I-9 White vertical...

  • Page 210: Troubleshooting Image Defect

    CHAPTER 6 TROUBLESHOOTING Troubleshooting Image Defect Several types of the image defects can be cleared by end users. For those defects, instruct the user to check the ‘User Check’ items described in each table. Even if the same image defect appears, the following procedures should be followed in the event of specific image defects.
  • Page 211 MFC-8220 SERVICE MANUAL Dark User Check (1) Check the paper used meets the recommended paper specifications. (2) Check the machine’s environment. High temperature and high humidity conditions can increase the amount of background shading. (3) Clean the corona wire with the wire cleaner.
  • Page 212 CHAPTER 6 TROUBLESHOOTING Completely blank User Check (1) Check for the setting of originals. Ground Possible cause Step Check Result Remedy contacts Developing bias Are the developing bias Clean the electrodes contact failure contacts between the machine at both sides. body and drum unit dirty? Drum unit Are the drum shaft and drum...
  • Page 213 MFC-8220 SERVICE MANUAL All black User Check (1) Clean the corona wire of the drum unit. (2) The drum unit may be damaged. Install a new drum unit. Ground Possible cause Step Check Result Remedy contacts Corona wire Is the corona wire dirty?
  • Page 214 CHAPTER 6 TROUBLESHOOTING Dirt on the back of paper Possible cause Step Check Result Remedy Clean the pressure roller Fixing unit dirty Is the pressure roller dirty? referring to the following Is any other area in the procedure. machine dirty? Dirt in the drum Is the transfer roller dirty? Replace the drum unit...
  • Page 215 MFC-8220 SERVICE MANUAL Black and blurred vertical streaks User Check (1) Clean the corona wire in the drum unit. (2) Check that the corona wire cleaner is at the home position. (3) Check that the toner cartridge is not empty.
  • Page 216 CHAPTER 6 TROUBLESHOOTING Black and blurred horizontal stripes User Check (1) The drum unit may be damaged. Install a new drum unit. (2) Check the paper used meets the recommended paper specifications. (3) Clean the machine interior and the corona wire in the drum unit. Ground Possible cause Step...
  • Page 217 MFC-8220 SERVICE MANUAL White vertical streaks User Check (1) Try to wipe the scanner window with a soft cloth. (2) The toner cartridge may be damaged. Install a new toner cartridge. (3) Check the machine’s environment. High temperature and high humidity conditions can cause this problem.
  • Page 218 CHAPTER 6 TROUBLESHOOTING I-11 Faulty registration Possible cause Step Check Result Remedy Excessive paper Is the paper loaded in the Instruct the user to keep paper load paper tray more than 27mm loads below 27mm in depth. high? Paper Is the specified weight of the Recommended to use the recommended paper being specified types of paper.
  • Page 219 MFC-8220 SERVICE MANUAL I-13 Image distortion Possible cause Step Check Result Remedy Laser unit Is the laser unit secured to the Secure the unit correctly and installation frame incorrectly? tighten the screws. (Check if there is any play.) Laser scanner Is the laser diode or the Replace the laser unit.
  • Page 220 CHAPTER 6 TROUBLESHOOTING I-15 White spots User Check (1) If the problem is not solved after printing a few pages, the drum unit may have glue from label stock on the photosensitive drum surface. Refer to Step 1 in the table below and NOTE in the next page.
  • Page 221 MFC-8220 SERVICE MANUAL NOTE: Clean the drum unit as follows: (1) Remove the toner cartridge from the drum unit. Place the printing samples in front of the drum unit, and find the exact position of the image defect. Drum unit...
  • Page 222 CHAPTER 6 TROUBLESHOOTING I-16 Black spots User Check (1) If the problem is not solved after printing a few pages, the drum unit may have glue from label stock on the photosensitive drum surface. Refer to Step 1 in the table below and NOTE in the previous page.
  • Page 223 MFC-8220 SERVICE MANUAL I-17 Black band Ground Possible cause Step Check Result Remedy contacts Corona wire Is the wire cleaner at its home Return the wire cleaner failure position? to its home position. Dirt on the Is the corona wire dirty? 1) Clean the corona corona wire.
  • Page 224 CHAPTER 6 TROUBLESHOOTING I-18 Gray background Possible cause Step Check Result Remedy Paper Does the paper being used Recommend to use the meet the paper specification specified types of paper. (weight, etc.)? Recommend to change to freshly unpacked paper. Toner sensor Is the sign "Toner Empty"...
  • Page 225 MFC-8220 SERVICE MANUAL I-19 Hollow print User Check (1) Check the paper used meets the recommended paper specifications. (2) Select the ‘Thick paper mode’ in the printer driver, or use thinner paper than you are currently using. (3) Check the machine’s environment, conditions such as high humidity may cause this situation to occur.
  • Page 226 CHAPTER 6 TROUBLESHOOTING I-21 Horizontal lines Ground Possible cause Step Check Result Remedy contacts Paper tray Are the ground contacts on the Clean the electrodes. connection back of the paper tray failure connecting correctly? I-22 Light rain Ground Remedy Possible cause Step Check Result...
  • Page 227 MFC-8220 SERVICE MANUAL I-23 Ghost User Check (1) Check the paper used meets the recommended paper specifications. Damp paper, thick media or rough surfaced paper can cause the problem. (2) Check the machine’s environment. High temperature and high humidity conditions can cause the problem.

  • Page 228: Location Of Grounding Contacts

    CHAPTER 6 TROUBLESHOOTING Location of Grounding Contacts 8.4.1 Drum unit (2) Wire cleaner Drum Unit (5) Grid (8) Cleaner (4) Development roller (3) Charge (1) Photosensitive drum (6) Transfer roller Fig. 6-13 8.4.2 Machine body & Paper tray (5) Grid (3) Charge (8) Cleaner (4) Development roller...

  • Page 229: Incorrect Printout

    MFC-8220 SERVICE MANUAL INCORRECT PRINTOUT When the data is not printed correctly as it is seen on the PC screen, follow the procedures below in the event of a specific error. The machine prints unexpectedly or it prints garbage. User Check (1) Check if the printer cable is not too long.
  • Page 230 Remember that the machine emulates widely used machine selections: HP Laser Jet 6P, Brother BR-Script Level 3, Epson FX-850, IBM Proprinter XL Try setting the machine into HP emulation and then select the HP LaserJet 6P machine in the application software.

  • Page 231: Network Problem

    INFORMATION, and select the name of the print/fax server (make sure that you have entered the print/fax server name). If you can see Print/Fax Server Status and Control in the menu, then the Brother print/fax server is visible to the network, proceed to subsection 10.11 ‘Novell NetWare Troubleshooting’.

  • Page 232: Intermittent Problem

    (a process known as filtering); therefore, such a bridge must be configured to allow Brother print/fax server addresses. Likewise, a router can be set up to pass only certain protocols, so be sure that the desired protocol can be passed through to the print/fax server.

  • Page 233: Tcp/Ip Troubleshooting

    MFC-8220 SERVICE MANUAL 10.3 TCP/IP Troubleshooting If you are using TCP/IP and cannot print to the print server and you have checked the hardware and network as described in the previous steps, then check the following: NOTE: It is always a good idea to try the following in order to eliminate the possibility of setup errors.

  • Page 234: Windows Nt/Lan Server (Tcp/Ip) Troubleshooting

    (10) If you cannot print from DEC TCP/IP Service for VMS (UCX), make sure that you have version 2.0B or later of this software, because earlier versions will not work with Brother print/fax servers.

  • Page 235: Brother Internet Print (Tcp/Ip) Troubleshooting

    If you are having trouble printing on a Windows 95/98/Me/2000/XP/NT 4.0 (or later) Peer to Peer network (NetBIOS), check the following: (1) Make sure that the Brother NetBIOS Port driver is securely installed and configured ® according to the Windows 95/98/Me/2000/XP/NT 4.0 Peer to Peer (NetBIOS) chapters.

  • Page 236: 10.11 Novell Netware Troubleshooting

    If you cannot print from NetWare and you have checked the hardware and network as described in the previous steps, first verify that the Brother print/fax server is attached to the server queue by going to PCONSOLE, selecting PRINT QUEUE INFORMATION, and then CURRENTLY ATTACHED SERVERS.

  • Page 237: 10.12 Appletalk Troubleshooting

    MFC-8220 SERVICE MANUAL 10.12 AppleTalk Troubleshooting In case of using Postscript driver, if you cannot print from an AppleTalk for Macintosh computer and you have checked the hardware and network as described in the previous steps, then check the following: (1) Make sure that you are running Phase 2 AppleTalk and that you have selected the correct network interface from the Apple Talk Control Panel on the Macintosh.

  • Page 238: 10.15 Internet Fax Troubleshooting

    (12) The NC-9100h print/fax server requires a portion of the user memory for operation. With the NC-9100h installed the number of fax sheets that can be sent or received will be reduced (by approximately 30 pages of the brother No.1 Test Chart) from the standard machine capacity.

  • Page 239: Chapter 7 Maintenance Mode

    MFC-8220 SERVICE MANUAL CHAPTER 7 MAINTENANCE MODE ENTRY INTO THE MAINTENANCE MODE To make the machine enter the maintenance mode, press the Menu button, *, 2, 8, 6, and 4 keys in this order. Within 2 seconds The machine beeps for approx. one second and displays "...

  • Page 240: List Of Maintenance Mode Functions

    CHAPTER 7 MAINTENANCE MODE LIST OF MAINTENANCE MODE FUNCTIONS Maintenance mode Functions Reference Function Function Subsection Code (Page) EEPROM Parameter Initialization 3.1 (7-4) Printout of Scanning Compensation Data 3.2 (7-5) ADF* Performance Test 3.3 (7-7) Test Pattern 1 3.4 (7-8) Firmware Switch Setting 3.5.1 (7-9) Printout of Firmware Switch Data...
  • Page 241 MFC-8220 SERVICE MANUAL < IMPORTANT> Basically, the maintenance-mode functions listed on the previous page should be accessed by service personnel only. However, you may allow end users to access some of these under the guidance of service personnel (e.g., by telephone).

  • Page 242: Detailed Description Of Maintenance-Mode Functions

    CHAPTER 7 MAINTENANCE MODE DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS EEPROM Parameter Initialization (Maintenance mode 01/91) < Function > The machine initializes the parameters, user switches, and firmware switches registered in the EEPROM, to the initial values. Entering the function code 01 initializes all of the EEPROM areas, but entering 91 does not initialize some areas, as listed below.

  • Page 243: Printout Of Scanning Compensation Data (Maintenance Mode 05)

    MFC-8220 SERVICE MANUAL Printout of Scanning Compensation Data (Maintenance mode 05) < Function > The equipment prints out the white and black level data for scanning compensation. < Operating Procedure > Do not start this function merely after powering on the equipment but start it after carrying out a sequence of scanning operation.
  • Page 244 CHAPTER 7 MAINTENANCE MODE Fig.7-2...

  • Page 245: Adf Performance Test (Maintenance Mode 08)

    MFC-8220 SERVICE MANUAL ADF Performance Test (Maintenance mode 08) < Function > The machine counts the documents fed by the automatic document feeder (ADF) and displays the count on the LCD for checking the ADF performance. < Operating Procedure >...

  • Page 246: Test Pattern 1 (Maintenance Mode 09)

    CHAPTER 7 MAINTENANCE MODE Test Pattern 1 (Maintenance mode 09) < Function > This function, much like the copying function, prints out test pattern 1 to allow the service personnel to check for record data missing or print quality. < Operating Procedure > Press the 0 and 9 keys in this order in the initial stage of the maintenance mode.

  • Page 247: Firmware Switch Setting And Printout

    MFC-8220 SERVICE MANUAL Firmware Switch Setting and Printout 3.5.1 Firmware switch setting (Maintenance mode 10) < Function > The machine incorporates the following firmware switch functions which may be activated with the procedures using the control panel keys and buttons.
  • Page 248 CHAPTER 7 MAINTENANCE MODE WSW No. Function WSW35 Function setting 13 WSW36 Function setting 14 WSW37 Function setting 15 WSW38 Function setting 16 WSW39 Function setting 17 WSW40 Function setting 18 WSW41 Function setting 19 WSW42 Function setting 20 WSW43 Function setting 21 WSW44 Speeding up scanning-1...

  • Page 249: Printout Of Firmware Switch Data (Maintenance Mode 11)

    MFC-8220 SERVICE MANUAL 3.5.2 Printout of firmware switch data (Maintenance mode 11) < Function > The machine prints out the setting items and contents specified by the firmware switches. < Operating Procedure > (1) Press the 1 key twice in the initial stage of the maintenance mode.

  • Page 250: Operation Check Of Lcd (Maintenance Mode 12)

    CHAPTER 7 MAINTENANCE MODE Operation Check of LCD (Maintenance mode 12) < Function > This function allows you to check whether the LCD on the control panel works normally. < Operating Procedure > (1) Press the 1 and 2 keys in this order in the initial stage of the maintenance mode. The LCD shows.

  • Page 251: Operational Check Of Control Panel Pcb (Maintenance Mode 13)

    MFC-8220 SERVICE MANUAL Operational Check of Control Panel PCB (Maintenance mode 13) < Function > This function allows you to check the control panel PCB for normal operation. < Operating Procedure > (1) Press the 1 and 3 keys in this order in the initial stage of the maintenance mode.

  • Page 252: Receiver Volume Adjustment (Maintenance Mode 16)

    CHAPTER 7 MAINTENANCE MODE Receiver Volume Adjustment (Maintenance mode 16) *This is only for display, not for adjustment. < Function > When the handset volume is set to ”HIGH”, it is affected by various characteristics of the FET (field effect transistor) on the main PCB, so the fine adjustments described below are required.

  • Page 253: Sensor Operational Check (Maintenance Mode 32)

    MFC-8220 SERVICE MANUAL Sensor Operational Check (Maintenance mode 32) < Function > This function allows you to check whether the 14 sensors--document front sensor, document rear sensor, cover sensor, hook sensor, toner sensor, regist front sensor, regist rear sensor, cassette sensor, tray 1 paper sensor, tray 2 paper sensor, 2nd cassette sensor*, 2nd regist sensor*, fixing sensor and paper eject sensor --operate correctly.
  • Page 254 CHAPTER 7 MAINTENANCE MODE (2) Change the detecting conditions to check that the indication on the LCD changes according to the sensor states. For instance, insert paper through the document front (or rear) sensor or the regist sensor(s), open the front cover or the document cover, remove the toner cartridge, jam paper at the paper outlet, insert paper from the manual feeder, and load a paper tray, etc.

  • Page 255: Received Data Transfer Function (Maintenance Mode 53)

    MFC-8220 SERVICE MANUAL 3.10 Received Data Transfer Function (Maintenance mode 53) < Function > This function is to transfer received data to another FAX equipment when the machine fails to print out the data because of a recording system failure.
  • Page 256 :001 Job No. of the transfer setting TOTAL PAGE[S] :001 Total number of pages to be transferred NAME :BROTHER Sender's name registered in the sender's FAX machine :052 824 2330 Sender's FAX number :052 824 2846 Sender's phone number TIME...

  • Page 257: Fine Adjustment Of Scan Start/End Positions (Maintenance Mode 54)

    MFC-8220 SERVICE MANUAL 3.11 Fine Adjustment of Scan Start/End Positions (Maintenance mode 54) < Function > This function is to adjust the scan start/end positions. < Operating Procedure > (1) Press the 5 and 4 keys in this order in the initial stage of the maintenance mode.

  • Page 258: Cis Scanner Area Setting (Maintenance Mode 55)

    CHAPTER 7 MAINTENANCE MODE MAINTENANCE Set button Stop/Exit button Left arrow key Right arrow key Stop/Exit button Set button ACCEPTED 1 second later Fig.7-14 Left arrow key Right arrow key Fig.7-15 3.12 CIS Scanner Area Setting (Maintenance mode 55) < Function > This function is to set the scanning area of the CIS scanner of this machine and store the setting value in the EEPROM.

  • Page 259: Paper Feed And Paper Eject Test (Maintenance Mode 67)

    MFC-8220 SERVICE MANUAL Paper Feed and Paper Eject Test (Maintenance mode 67) < Function > This function is to verify if paper is properly fed from a paper tray and properly ejected to a paper eject tray. Please make use of it for confirmation after repair service is done.

  • Page 260: Eeprom Customizing (Maintenance Mode 74)

    CHAPTER 7 MAINTENANCE MODE 3.14 EEPROM Customizing (Maintenance mode 74) < Function > This function allows you to customize the EEPROM according to language, function settings, and firmware switch settings. The customizing codes list is given in Appendix NOTE: If you replace the main PCB, be sure to carry out this procedure. <...

  • Page 261: Display Of The Equipment's Log Information (Maintenance Mode 80)

    MFC-8220 SERVICE MANUAL 3.15 Display of the Equipment’s Log Information (Maintenance mode 80) < Function > The equipment may display its log information on the LCD. < Operating Procedure > (1) Press the 8 and 0 keys in this order in the initial stage of the maintenance mode.
  • Page 262 CHAPTER 7 MAINTENANCE MODE USB: USB Serial No. T1_JAM: Number of jams that occurred at the tray 1 T2_JAM Number of jams that occurred at the tray 2 IN_JAM Number of jams that occurred at the feeding RE_JAM Number of jams that occurred at the ejecting TOTAL PG Total number of pages printed DRUM_PG...

  • Page 263: Machine Error Code Indication (Maintenance Mode 82)

    MFC-8220 SERVICE MANUAL 3.16 Machine Error Code Indication (Maintenance mode 82) < Function > This function displays an error code of the last error on the LCD. < Operating Procedure > (1) Press the 8 and 2 keys in this order in the initial stage of the maintenance mode.

  • Page 264: Cancellation Of The Memory Security Mode (Not Applicable To The Japanese Version)

    CHAPTER 7 MAINTENANCE MODE 3.18 Cancellation of the Memory Security Mode (Not applicable to the Japanese version) < Function > This procedure can cancel the memory security mode. Use this procedure if the user forgets his/her password entered when setting the memory security mode so as not to exit from the memory security mode.

  • Page 265: Appendix 1 Eeprom Customizing Codes

    MFC-8220 SERVICE MANUAL APPENDIX 1 EEPROM CUSTOMIZING CODES This function allows you to customize the EEPROM according to language, function settings, and firmware switch settings. < Operating Procedure > (1) To make the machine enter the maintenance mode, press the Menu button, *, 2, 8, 6, and 4 keys in this order.

  • Page 266: Appendix 2 Installing The Update Data

    APPENDIX 2 INSTALLING THE UPDATE DATA APPENDIX 2 INSTALLING THE UPDATE DATA INSTALLING THE UPDATE DATA TO THE MACHINE If you want to update the current program stored in the flash ROM of the main PCB to the newer version or after you replace the main PCB, install the update program onto the flash ROM.

  • Page 267: Installing The Update Data Onto The Flash Rom Of The Machine

    MFC-8220 SERVICE MANUAL Installing the Update Data onto the Flash ROM of the Machine < On a PC running Windows 95 > Copy the update data and transfer utility onto the desired same directory of the hard disk. e.g., C:\UPDATE Click the Start button, point to Programs, and then click MS-DOS Prompt to open an MS-DOS window.

  • Page 268: Setting Id Codes To Machines

    (*ID codes are essential when more than one machine is connected to a single PC via USB.) Please check the printer driver of MFC-8220 is installed in a host computer before working. When not installed. Please install a printer driver in a host computer before working.

  • Page 269: Running The Setup Utility

    In Port, make sure that the HFC/DCP ports connected are shown. When not select, please click down arrow key and select the USB port of MFC-8220. In the Serial No = 000 box, type the 9-digit serial number (e.g., G01012345) printed on the nameplate labeled to the back of the machine as an ID code.

  • Page 270: Appendix 3 Firmware Switchs (Wsw

    APPENDIX 3 FIRMWARE SWITCHS (WSW) APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW No. Function Reference Page WSW01 Dial pulse setting WSW02 Tone signal setting WSW03 PABX mode setting WSW04 TRANSFER facility setting WSW05 1st dial tone and busy tone detection A-10 WSW06 Pause button setting and 2nd dial tone detection A-11...

  • Page 271: Wsw01 Dial Pulse Setting

    MFC-8220 SERVICE MANUAL WSW01 (Dial pulse setting) Selector Function Setting and Specifications No. 1 2 Dial pulse generation mode 10-N No. 3 4 60 ms Break time length in pulse dialing 67 ms 40 ms (for 16 PPS) 64 ms (at 106-ms intervals) No.

  • Page 272: Wsw02 Tone Signal Setting

    APPENDIX 3 FIRMWARE SWITCHS (WSW) Selector 7: Switching between pulse (DP) and tone (PB) dialing, by the function switch This selector determines whether or not the dialing mode may be switched between the pulse (DP) and tone (PB) dialing by using the function switch. Selector 8: Default dialing mode, pulse (DP) or tone (PB) dialing This selector sets the default dialing mode (pulse dialing or tone dialing) which may be...

  • Page 273: Wsw03 Pabx Mode Setting

    MFC-8220 SERVICE MANUAL WSW03 (PABX* mode setting) Selector Function Setting and Specifications CNG detection when sharing a modular wall socket with a 0: A 1: B telephone Not used. CNG detection when sharing a modular wall socket with a 0: A...

  • Page 274: Wsw05 1St Dial Tone And Busy Tone Detection

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW05 (1st dial tone and busy tone detection) Selector Function Setting and Specifications No. 1 2 3 0 0 0 3.5 sec. WAIT 0 0 1 7.0 sec. WAIT 0 1 0 10.5 sec. WAIT 1st dial tone detection 0 1 1 14.0 sec.

  • Page 275: Wsw06 Pause Button Setting And 2Nd Dial Tone Detection

    MFC-8220 SERVICE MANUAL Selectors 5 and 6: Busy tone detection in automatic sending mode These selectors determine whether or not the machine automatically disconnects a line upon detection of a busy tone in automatic sending mode. Setting selector 6 to "0" ignores a busy tone so that the machine does not disconnect the line.
  • Page 276 APPENDIX 3 FIRMWARE SWITCHS (WSW) Selectors 1 through 3: Pause button setting and 2nd dial tone detection Selectors No WAIT is inserted even if the Pause button is pressed. If you press the Pause button during dialing, the machine will insert WAIT as defined in the above table.

  • Page 277: Wsw07

    MFC-8220 SERVICE MANUAL WSW07 (Dial tone setting 1) Selector Function Setting and Specifications No. 1 2 Frequency band range Narrows by 10 Hz Initial value Widens by 10 Hz Not used. No. 4 5 6 0 0 0 : -21 dBm...

  • Page 278: Wsw08

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW08 (Dial tone setting 2) Selector Function Setting and Specifications No. 1 2 3 0 0 0 : 50 ms 0 0 1 : 210 ms 0 1 0 : 500 ms 1st dial tone detection time length 0 1 1 : 800 ms...

  • Page 279: Wsw09 Protocol Definition

    MFC-8220 SERVICE MANUAL WSW09 (Protocol definition 1) Selector Function Setting and Specifications Frame length selection 0: 256 octets 1: 64 octets Use of non-standard commands 0: Allowed 1: Prohibited No. 3 4 times No. of retries 3 times 2 times...

  • Page 280: Wsw10 Protocol Definition

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW10 (Protocol definition 2) Selector Function Setting and Specifications Not used. Time length from transmission of 0: 100 ms 1: 50 ms the last dial digit to CML ON Time length from CML ON to CNG 0: 2 sec.

  • Page 281: Wsw11 Busy Tone Setting

    MFC-8220 SERVICE MANUAL WSW11 (Busy tone setting) Selector Function Setting and Specifications Narrows by 10 Hz Frequency band range Initial value Widens by 10 Hz 1: 250-750/250-750 ms 1: 400-600/400-600 ms 1: 175-440/175-440 ms ON/OFF time length ranges 1: 100-1000/17-660 ms...

  • Page 282: Wsw12 Signal Detection Condition Setting

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW12 (Signal detection condition setting) Selector Function Setting and Specifications No. 1 1500 ms Min. OFF time length of calling 500 ms signal (Ci) 700 ms 900 ms No. 3 6 sec. Max. OFF time length of calling 7 sec.

  • Page 283: Wsw13 Modem Setting

    MFC-8220 SERVICE MANUAL WSW13 (Modem setting) Selector Function Setting and Specifications No. 1 0 km Cable equalizer 1.8 km 3.6 km 5.6 km No. 3 -43 dBm Reception level -47 dBm -49 dBm -51 dBm 0: 0 dB 1: 8 dB...
  • Page 284 APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW14 (AUTO ANS facility setting) Selector Function Setting and Specifications 13 Hz Frequency band selection 15 Hz (Lower limit) 23 Hz 20 Hz Frequency band selection 30 Hz (Upper limit) 55 Hz 70 Hz : 200 Hz Fixed to once Fixed to 2 times Fixed to 3 times...

  • Page 285: Wsw15 Redial Facility Setting

    MFC-8220 SERVICE MANUAL WSW15 (REDIAL facility setting) Selector Function Setting and Specifications No. 1 5 minutes Selection of redial interval 1 minute 2 minutes 3 minutes No. 3 16 times 1 times No. of redialings 2 times 3 times 15 times...

  • Page 286: Wsw16 Function Setting

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW16 (Function setting 1) Selector Function Setting and Specifications Not used. CCITT superfine recommendation 0: OFF 1: ON Not used. Max. document length limitation 0: 400 cm 1: 90 cm Stop/Exit button pressed during 0: Not functional 1: Functional reception Selector 2:...

  • Page 287: Wsw17 Function Setting

    MFC-8220 SERVICE MANUAL WSW17 (Function setting 2) Selector Function Setting and Specifications No. 1 No alarm Off-hook alarm Always valid Valid except when 'call reservation' is selected. Not used. Calendar clock type U.S.A. type 1: European type Not used. Non-ring reception 1: ON Not used.

  • Page 288: Wsw18 Function Setting

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW18 (Function setting 3) Selector Function Setting and Specifications Not used. No. 2 40 sec. Detection enabled time for CNG 0 sec. (No detection) and no tone 5 sec. 80 sec. Not used. Registration of station ID Permitted Prohibited No.

  • Page 289: Wsw19 Transmission Speed Setting

    MFC-8220 SERVICE MANUAL WSW19 (Transmission speed setting) Selector Function Setting and Specifications No. 1 No. 4 First transmission speed choice 2,400 bps for fallback 4,800 bps 7,200 bps 9,600 bps 12,000 bps Last transmission speed choice for fallback 14,400 bps V.

  • Page 290: Wsw20 Overseas Communications Mode Setting

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW20 (Overseas communications mode setting) Selector Function Setting and Specifications EP* tone prefix 0: OFF 1: ON Overseas communications mode 0: 2100 Hz 1: 1100 Hz (Reception) Overseas communications mode 0: OFF 1: Ignores DIS once. (Transmission) Min.

  • Page 291: Wsw21 Tad Setting

    MFC-8220 SERVICE MANUAL WSW21 (TAD setting 1) Selector Function Setting and Specifications Not used. Erasure of message stored in the memory after the message 0: Yes 1: No transfer Selector 8: Erasure of message Setting this selector to "0" will erase the message recorded in the memory after the document retrieval feature transfers the message.

  • Page 292: Wsw23

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW23 (Communications setting) Selector Function Setting and Specifications Starting point of training check 0: From the head of a series of zeros (TCF) 1: From any arbitrary point Allowable training error rate 0.5% Decoding error rate for transmission of RTN Not used.

  • Page 293: Wsw24

    MFC-8220 SERVICE MANUAL WSW24 (TAD setting 2) Selector Function Setting and Specifications Not used. Time length from CML ON to 4 sec. start of pseudo ring backtone 3 sec. transmission 2 sec. 1 sec. Not used. Selectors 3 and 4: Time length from CML ON to start of pseudo ring backtone transmission These selectors set the length of time from CML-ON up to the start of pseudo ring backtone transmission.

  • Page 294: Wsw26

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW26 (Function setting 4) Selector Function Setting and Specifications Not used. Dialing during document reading into the temporary memory in in- 0: Disabled 1: Enabled memory message transmission No. 4 No. of CNG cycles to be detected (when the line is connected via the external telephone except in the external TAD mode)

  • Page 295: Wsw27

    MFC-8220 SERVICE MANUAL WSW27 (Function setting 5) Selector Function Setting and Specifications Not used. Ringer OFF setting Not used. Detection of distinctive ringing pattern Not used. NOTE: • Selector 1 takes effect only in models/versions having a TEL key. • Selector 4 is applicable only to the U.S.A. versions.

  • Page 296: Wsw28

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW28 (Function setting 6) Selector Function Setting and Specifications No. 1 2 3 0 0 0 0 dB 0 0 1 +1 dB Transmission level of DTMF high- 0 1 0 +2 dB band frequency signal 0 1 1 +3 dB 1 0 0...

  • Page 297: Wsw29

    MFC-8220 SERVICE MANUAL WSW29 (Function setting 7) Selector Function Setting and Specifications Not used. WSW30 (Function setting 8) Selector Function Setting and Specifications Not used. Duty cycle control of pulsed current 0: OFF 1: ON for the heat-fixing unit Not used.

  • Page 298: Wsw31

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW31 (Function setting 9) Selector Function Setting and Specifications Not used. Default reduction rate for failure of automatic reduction during 0: ON 1: OFF recording Not used. Minimum short-OFF duration in 0: 130 ms 1: 90 ms distinctive ringing Not used.

  • Page 299: Wsw32

    MFC-8220 SERVICE MANUAL WSW32 (Function setting 10) Selector Function Setting and Specifications Not used. No. 5 Standard Default resolution Fine Super fine Photo No. 7 Automatic Default contrast Super light Super dark Selectors 5 and 6: Default resolution These selectors set the default resolution which applies when the machine is powered up or completes a transaction.

  • Page 300: Wsw34

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW34 (Function setting 12) Selector Function Setting and Specifications Not used. No. 6 Number of DTMF tone signals for inhibiting the detection of CNG during external TAD operation Not used. NOTE: Selectors 4 and 5 are not applicable to the American version. Selectors 6 and 7: Number of DTMF tone signals for inhibiting the detection of CNG during external TAD operation If the machine receives this specified number of DTMF tone signals during external TAD...

  • Page 301: Wsw36 Function Setting

    MFC-8220 SERVICE MANUAL WSW36 (Function setting 14) Selector Function Setting and Specifications ECP* mode 0: ON Recovery from inactive PC 0: Disabled Enabled interface PC power-off recognition time 0: Normal Long Not used. Escape from phase C 0: Yes No. 6 7 8...

  • Page 302: Wsw37

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW37 (Function setting 15) Selector Function Setting and Specifications Printout of the stored image data of an unsent document onto the error 0: No report Erasure of the stored image data of an unsent document at the time of 0: No the subsequent in-memory message transmission...

  • Page 303: Wsw38

    MFC-8220 SERVICE MANUAL WSW38 (Function setting 16) Selector Function Setting and Specifications No. 1 Automatic Setting of the equalizer Fixed to 4 points Fixed to 16 points Sending level of guard tone at 0: Normal - 7 db Normal phase 2...

  • Page 304: Wsw39

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW39 (Function setting 17) Selector Function Setting and Specifications No. 1 No. 5 2400 bps First transmission speed choice 4800 bps for fallback 7200 bps 9600 bps 12000 bps 14400 bps 16800 bps 19200 bps 21600 bps 24000 bps 26400 bps...

  • Page 305: Wsw40

    MFC-8220 SERVICE MANUAL WSW40 (Function setting 18) Selector Function Setting and Specifications Not used. Not masking Masking No. 3 3429 symbols/sec No. 4 3200 symbols/sec Masking of symbol rate(s) No. 5 3000 symbols/sec No. 6 2800 symbols/sec No. 7 Not used.

  • Page 306: Wsw41

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW41 (Function setting 19) Selector Function Setting and Specifications No. 1 2 3 0 0 0 16 hours 0 0 1 24 hours 0 1 0 12 hours ON-duration of the fluorescent lamp 0 1 1 8 hours built in the CIS unit (Not used.) 1 0 0...

  • Page 307: Wsw42

    MFC-8220 SERVICE MANUAL WSW42 (Function setting 20) Selector Function Setting and Specifications Incoming mail server POP* Incoming mail server SMTP* Internet-FAX forward function JBIG* coding system Disabled Enabled Not used. POP: Post Office Protocol SMTP: Simple Mail Transfer Protocol JBIG:...

  • Page 308: Wsw44

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW44 (Speeding up scanning-1) Selector Function Setting and Specifications Not used. No. 6 7 8 0 0 0 : Obtained compensation data ineffective 0 0 1 : 1 min. Effective time length of the white level 0 1 0 : 3 min.

  • Page 309: Wsw45

    MFC-8220 SERVICE MANUAL WSW45 (Speeding up scanning-2) Selector Function Setting and Specifications No. 1 2 3 0 0 0 : No automatic drawing-in 0 0 1 : 1 sec. 0 1 0 : 2 sec. Delay time from when documents 0 1 1 : 3 sec.

  • Page 310: Wsw46 Monitor Of Pc On/Off State

    APPENDIX 3 FIRMWARE SWITCHS (WSW) WSW46 (Monitor of PC ON/OFF state) Selector Function Setting and Specifications No. 1 2 0 0 : Disabled 0 1 : Monitor SELECT IN Monitoring the PC ON/OFF state 1 0 : Monitor STROBE 1 1 : Monitor both SELECT IN and STROBE Parallel port output pins kept at high...

  • Page 311: Wsw48 Function Setting

    MFC-8220 SERVICE MANUAL WSW48 (Function setting 23) Selector Function Setting and Specifications Not used. 0 0 0 : 25 pcs. Number of pieces of (scan) key 0 0 1 : 50 pcs. information registered according to 0 1 0 : 75 pcs.

  • Page 312: Main Pcb Circuit Diagram (1/6

    APPENDIX 4 CIRCUIT DIAGRAM Appendix 4.1 Main PCB Circuit Diagram (1/6) A-48...

  • Page 313: Main Pcb Circuit Diagram (2/6

    MFC-8220 SERVICE MANUAL Appendix 4.2 Main PCB Circuit Diagram (2/6) A-49...

  • Page 314: Main Pcb Circuit Diagram (3/6

    APPENDIX 4 CIRCUIT DIAGRAM Appendix 4.3 Main PCB Circuit Diagram (3/6) A-50...

  • Page 315: Main Pcb Circuit Diagram (4/6

    MFC-8220 SERVICE MANUAL Appendix 4.4 Main PCB Circuit Diagram (4/6) A-51...

  • Page 316: Main Pcb Circuit Diagram (5/6

    APPENDIX 4 CIRCUIT DIAGRAM Appendix 4.5 Main PCB Circuit Diagram (5/6) A-52...

  • Page 317: Main Pcb Circuit Diagram (6/6

    MFC-8220 SERVICE MANUAL Appendix 4.6 Main PCB Circuit Diagram (6/6) A-53...

  • Page 318: Engine Pcb Circuit Diagram (1/2

    APPENDIX 4 CIRCUIT DIAGRAM Appendix 4.7 Engine PCB Circuit Diagram (1/2) A-54...

  • Page 319: Engine Pcb Circuit Diagram (2/2

    MFC-8220 SERVICE MANUAL Appendix 4.8 Engine PCB Circuit Diagram (2/2) A-55...

  • Page 320: Ncu Pcb Circuit Diagram (Europe

    APPENDIX 4 CIRCUIT DIAGRAM Appendix 4.9 NCU PCB Circuit Diagram (Europe) A-56...

  • Page 321: Ncu Pcb Circuit Diagram (U.s.a.)

    MFC-8220 SERVICE MANUAL Appendix 4.10 NCU PCB Circuit Diagram (U.S.A.) A-57...

  • Page 322: Control Panel Pcb Circuit Diagram

    APPENDIX 4 CIRCUIT DIAGRAM Appendix 4.11 Control Panel PCB Circuit Diagram A-58...

  • Page 323: Low-Voltage Power Supply Pcb Circuit Diagram

    MFC-8220 SERVICE MANUAL Appendix 4.12 Low-voltage Power Supply PCB Circuit Diagram A-59...

  • Page 324: High-Voltage Power Supply Pcb Circuit Diagram (100V

    APPENDIX 4 CIRCUIT DIAGRAM Appendix 4.13 High-voltage Power Supply PCB Circuit Diagram (100V) A-60...

  • Page 325: High-Voltage Power Supply Pcb Circuit Diagram (200V)

    MFC-8220 SERVICE MANUAL Appendix 4.14 High-voltage Power Supply PCB Circuit Diagram (200V) A-61...

  • Page 326: Back Light Pcb Circuit Diagram

    APPENDIX 4 CIRCUIT DIAGRAM Appendix 4.15 Back Light PCB Circuit Diagram A-62...

  • Page 327: Appendix 5 Location To Attach The Additional Ribs

    MFC-8220 SERVICE MANUAL APPENDIX 5 LOCATION TO ATTACH THE ADDITIONAL RIBS The additional ribs are recommended to attach in order to prevent a damage towards ribs of the Top cover ASSY caused by printing with the particular kind of paper. With the additional ribs, it prevents paper jams when the particular kind of paper ejects as well.
  • Page 328 February ’04 SM-FAX026 (6) 8X5913 Printed in Japan...

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