Brother MFC-8220 Service Manual Download Page 65

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CHAPTER 3 THEORY OF OPERATION

3-10

1.4 Engine

PCB

The gate array which transforms the serial signal from the main PCB into the parallel signal is
mounted on the engine PCB.

The engine PCB controls the following parts by using the transferred signal data;

•

Main motor

•

Solenoid

•

Fan motor

•

Upper cassette sensor

•

Thermistor

•

Lower cassette sensor

•

Polygon motor

•

Upper paper exist sensor

•

High-voltage power supply

•

Lower paper exist sensor

•

Toner sensor

•

Lower cassette exist sensor

•

Cover sensor

•

Paper eject sensor

•

Front regist sensor

•

Fixing unit cover sensor

•

Rear regist sensor

For the circuit diagram of the engine PCB, see

APPENDIX 4.7 and 4.8 ‘ENG INE 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

Summary of Contents for MFC-8220

Page 1: ...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: ...hange 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 Microsoft and MS DOS are registered trademarks of Microsoft Corporation Windows is a registered trademark of Microsoft Corporation in the U S and o...

Page 3: ...PTER 1 GENERAL CHAPTER 2 INSTALLATION AND BASIC OPERATION CHAPTER 3 THEORY OF OPERATION CHAPTER 4 DISASSEMBLY AND RE ASSEMBLY CHAPTER 5 PERIODIC MAINTENANCE CHAPTER 6 TROUBLESHOOTING CHAPTER 7 MAINTENANCE MODE APPENDIX 1 EEPROM CUSTOMIZING CODES APPENDIX 2 INSTALLING THE UPDATE DATA APPENDIX 3 FIRMWARE SWITCHS WSW APPENDIX 4 CIRCUIT DIAGRAMS APPENDIX 5 LOCATION TO ATTACH THE ADDITIONAL RIBS Inform...

Page 4: ... 2 12 Printable Area 1 7 2 13 Print Speeds with Various Settings 1 8 2 14 Toner Cartridge Weight Information 1 9 3 SERIAL NO DESCRIPTIONS 1 10 CHAPTER 2 INSTALLATION AND BASIC OPERATION 2 1 1 CONDITIONS REQUIRED FOR INSTALLATION 2 1 1 1 Power Supply 2 1 1 2 Environment 2 1 1 3 System Requirements for Brother Printer Solution 2 2 2 UNPACKING 2 3 3 INSTALL THE MACHINE 2 5 3 1 For All Users 2 5 3 1 1...

Page 5: ...B Block Diagram 3 2 1 3 Main PCB 3 3 1 3 1 CPU 3 3 1 3 2 USB 3 4 1 3 3 IEEE 1284 3 4 1 3 4 ROM 3 5 1 3 5 Flash ROM 3 6 1 3 6 SDRAM 3 6 1 3 7 Optional RAM 3 7 1 3 8 EEPROM 3 7 1 3 9 Reset circuit 3 8 1 3 10 Engine I O 3 8 1 3 11 Panel I O 3 8 1 3 12 Video I O 3 8 1 3 13 Scanner control 3 9 1 3 14 Power supply 3 9 1 4 Engine PCB 3 10 1 5 Power Supply 3 11 1 5 1 Low voltage power supply 3 11 1 5 2 Hi...

Page 6: ... 13 3 5 Access Cover Battery ASSY 4 14 3 6 Control Panel ASSY 4 16 3 7 Document Scanner 4 21 3 8 Outer Chute 4 26 3 9 Rear Cover L R 4 27 3 10 Side Cover L R 4 28 3 11 Top Cover ASSY 4 29 3 12 Front Cover ASSY 4 34 3 13 NCU 4 35 3 14 Fixing Unit 4 36 3 15 Laser Unit 4 45 3 16 Main PCB ASSY 4 46 3 17 Base Plate LV Insulation Sheet 4 48 3 18 Engine PCB ASSY 4 49 3 19 High voltage PS PCB ASSY 4 50 3 ...

Page 7: ...roblem 6 3 2 ERROR MESSAGE 6 4 2 1 Error Message on the LCD 6 4 2 2 Error Codes Shown in the MACHINE ERROR X X message 6 6 3 PAPER PROBLEMS 6 10 3 1 Paper Loading Problems 6 10 3 2 Original Jams 6 11 3 2 1 Original is jammed in the ADF Automatic document feeder 6 11 3 3 Paper Jams 6 11 3 3 1 Clearing jammed paper 6 11 3 3 2 Causes countermeasures 6 15 3 4 Paper Feeding Problems 6 16 4 SOFTWARE SET...

Page 8: ... 3 2 Printout of Scanning Compensation Data Maintenance mode 05 7 5 3 3 ADF Performance Test Maintenance mode 08 7 7 3 4 Test Pattern 1 Maintenance mode 09 7 8 3 5 Firmware Switch Setting and Printout 7 9 3 5 1 Firmware switch setting Maintenance mode 10 7 9 3 5 2 Printout of firmware switch data Maintenance mode 11 7 11 3 6 Operation Check of LCD Maintenance mode 12 7 12 3 7 Operational Check of ...

Page 9: ...in PCB Circuit Diagram 1 6 A 48 4 2 Main PCB Circuit Diagram 2 6 A 49 4 3 Main PCB Circuit Diagram 3 6 A 50 4 4 Main PCB Circuit Diagram 4 6 A 51 4 5 Main PCB Circuit Diagram 5 6 A 52 4 6 Main PCB Circuit Diagram 6 6 A 53 4 7 Engine PCB Circuit Diagram 1 2 A 54 4 8 Engine PCB Circuit Diagram 2 2 A 55 4 9 NCU PCB Circuit Diagram Europe A 56 4 10 NCU PCB Circuit Diagram U S A A 57 4 11 Control Panel...

Page 10: ...fter August 2 1976 Compliance is mandatory for products marketed in the United States One of the following labels on the back of the printer indicates compliance with the FDA regulations and must be attached to laser products marketed in the United States The label for Japanese manufactured products MANUFACTURED K BROTHER INDUSTRIES LTD 15 1 Naeshiro cho Mizuho ku Nagoya 467 8561 Japan This produc...

Page 11: ...r unit Since the variable resistor in the laser unit is adjusted in accordance with the standards never touch it Caution Use of controls adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure For Finland and Sweden LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT Varoitus Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitull...

Page 12: ...it ACHTUNG Im Falle von Störungen der Lasereinheit muß diese ersetzt werden Das Gehäuse der Lasereinheit darf nicht geöffnet werden da sonst Laserstrahlen austreten können Location of the laser beam window ADDITIONAL INFORMATION When servicing the optical system of the printer be careful not to place a screwdriver or other reflective object in the path of the laser beam Be sure to take off any per...

Page 13: ...the various kinds of WARNING messages included in this manual WARNING Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the printer WARNING Some parts inside the printer are extremely hot immediately after the printer is used When opening the front cover or back cover to access any parts inside the printer never touch the shaded part...

Page 14: ...elephone handset Control panel Paper tray Manual feed tray Telephone line jack USB interface connector Parallel interface connector External telephone line jack AC power connector Face up output tray Back output tray Control panel cover Paper guides Face down output tray support Flap with extension Support flap ADF document output support Handset jack Side cover ...

Page 15: ...oise Operating 53dBA or less Standby 30dBA or less 2 2 Environment of Installation Site Temperature 50 to 90 5 F 10 to 32 5 C Humidity 20 to 80 without condensation 2 3 Paper Paper Input Paper Tray Paper type Plain paper Transparency Paper size A4 Letter JIS B5 A5 ISO B5 A6 LGL ISO B6 EXE Weight 16 to 28lb 60 to 105g m2 Maximum number of paper to be loaded Approx 250 sheets of 20lb 80g m2 Manual F...

Page 16: ...al Sequential Timer Contrast Control Automatic Light Dark manual setting Resolution Horizontal 203 dot inch 8 dot mm Vertical Standard 98 line inch 3 85 line mm Fine Photo 196 line inch 7 7 line mm Superfine 392 line inch 15 4 line mm One Touch Dial 32 16 x 2 Speed Dial 300 stations Automatic Redial Three times Auto Answer 0 to 10 rings Memory Transmission Up to 600 pages Brother 1 Chart Out of Pa...

Page 17: ...ended Cable Parallel cable A bi directional shielded parallel cable that is IEEE 1284 compliant and not longer than 6 feet 2m USB cable A Hi Speed USB 2 0 cable that is not longer than 6 feet 2m NOTE Please make sure that you use a Hi Speed USB 2 0 certified cable if your computer uses a Hi Speed USB 2 0 interface Even if your computer has a USB 1 1 interface you can connect the MFC To meet FCC CI...

Page 18: ...P port drivers when using Windows 95 98 Me Windows NT 4 0 NetBIOS port drivers when using Windows 95 98 Me Windows NT 4 0 Windows 2000 XP SMTP port driver when using Windows 95 98 Me Windows NT 4 0 Windows 2000 XP Web BRAdmin Professional Not included in the CD ROM Uploaded to the Web site For more information on Web BRAdmin Professional please access http solutions brother co jp 2 11 Paper 2 11 1...

Page 19: ...w the information given below to prevent any paper jams print quality problems or machine damage It is recommended to use long grained paper for the best print quality If short grained paper is being used it might be the cause of paper jams Use neutral paper Do not use acid paper to avoid any damage to the drum unit Avoid using coated paper such as vinyl coated paper Avoid using preprinted or high...

Page 20: ...ace up output Output paper with its printed surface turned up 3 The output methods according to paper types as shown below are recommended Paper output Paper types Face down output Face up output Plain paper 〇〇 Thick paper 〇 Recycled paper 〇〇 Transparency 〇 Label 〇 Envelope 〇 Post card 〇 2 12 Printable Area Unprintable areas edge of recording paper by size are shown below Areas excluding the edg...

Page 21: ...int speed OHP 21cpm Letter 20cpm A4 Plain paper 21cpm Letter 20cpm A4 Rather thick plain paper Thin envelope 8cpm after 5 min have passed Thick paper Post card Envelope 8cpm after 30 sec have passed Extra thick paper Bond paper Rather thick envelope 4cpm The print speed may vary according to conditions such as paper size and paper tray NOTE When a smaller size paper than A4 size is printed the tem...

Page 22: ...00001B M4JN000001C Serial No TN3060 TN570 TN3030 TN540 Brand new Toner Cartridge Weight 812 5g 757 5g Toner Weight at Brand New Toner Cartridge 182 5 2 5g 130 5 2 5g Toner Cartridge Weight at Toner Near Empty 693 5 698 5g 693 5 698 5g Remain Toner Weight at Toner Near Empty 80 85g 80 85g Toner Cartridge Weight at Toner Empty 678 5 683 5g 678 5 683 5g Remain Toner Weight at Toner Empty 60 70g 60 70...

Page 23: ...t A Mie Brother C BIUK J Buji Nan Ling Factory 1 Machine Printed on the label attached on the rear of the main body Example U 5 2 6 8 2 A 3 J 1 1 1 1 0 1 2 Process unit Imprinted on the aluminum bag Drum unit with toner cartridge 3 A 1 1 J A 3 Drum unit Printed on the bar code label attached inside the drum unit A 3 9 5 1 0 0 1 0 4 A YEAR MONTH DATE FACTORY ID NO YEAR MONTH SERIAL NO MODEL NO MONT...

Page 24: ...A 0 0 0 1 9 9 A 5 Laser unit On the laser unit 2 5 0 0 1 YEAR MONTH DATE FACTORY ID NO YEAR MONTH SERIAL NO PRODUCTION LOT NO LASER UNIT NO 5 LM2486001 Laser Unit ZL2E FACTORY ID NO FACTORY ID NO CARTRIDGE PRODUCTION INFO 1 Kariya Plant 2 Buji Nan Ling Factory TONER VOLUME PRODUCTION LINE NO DR TN REUSE The first time M The second time N The third time P ...

Page 25: ... 32 5 C The relative humidity is maintained between 20 and 80 The machine should be used in a well ventilated room Place the machine on a flat horizontal surface Keep the machine clean Do not place the machine in a dusty place Do not place the machine where the ventilation hole of the machine is blocked Keep approximately 100 mm 4 inches between the ventilation hole and the wall Do not place the m...

Page 26: ...sion Processor Speed Minimum RAM Recommended RAM Available Hard Disk Space 95 98 98SE 488 66 MHz 8MB 16MB 40MB NT Workstation 4 0 Pentium 75MHz 16MB 32MB 50MB 2000 Professional Pentium 133MHz 64MB 128MB 50MB Me Pentium 150MHz 32MB 64MB 50MB Windows Operating System XP Pentium 300MHz 128MB 128MB 50MB OS 8 6 to 9 2 32MB 64MB Apple Macintosh Operating System OS X 10 1 to 10 2 1 All base models meet m...

Page 27: ...sion Support Flap 5 Manual Feed Tray 6 Paper Tray 7 ADF Document Support 8 Control Panel Cover 9 Face down Output Tray 10 Front Cover 11 Power Switch MFC Fig 2 1 Carton components may differ from one country to another Save all packing materials and the carton NOTE The interface cable is not a standard accessory Please purchase the appropriate interface cable for the interface you intend to use Pa...

Page 28: ...CHAPTER 2 INSTALLATION AND BASIC OPERATION 2 4 CAUTION When you move the machine grasp the side handholds that are at the bottom shown in the illustration ...

Page 29: ...ation are contained on the supplied CD ROM 3 1 For All Users For Windowsâ â â â users 1 Turn on the PC power Insert the supplied CD ROM into the CD ROM drive The opening screen will appear automatically Follow the on screen instructions NOTE If the opening screen does not appear click Start and select Run Then enter the CD drive letter and type START EXE for example D START EXE 2 Click the Initial...

Page 30: ...ble Connecting the interface cable is done when installing the driver 1 Attach the ADF document support Fig 2 2 2 Open the control panel cover by lifting it toward the back Fig 2 3 3 Attach the ADF support Fig 2 4 4 Close the control panel cover ADF document support Control panel cover ADF document output support ...

Page 31: ... 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 Fig 2 6 Front cover release button Front cover ...

Page 32: ...e protective part Fig 2 7 3 Rock it from side to side several times to distribute the toner evenly inside the assembly Fig 2 8 4 Push the drum unit assembly into the machine until it snaps into place Fig 2 9 5 Close the front cover of the machine Fig 2 10 Drum unit assembly Protective part ...

Page 33: ... 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 Fig 2 12 NOTE For Legal size paper press the universal guide release button and pull out the rear of the paper tray Fig 2 13 Paper guide release lever Universal guide release button ...

Page 34: ... the paper tray Check that the paper is flat in the tray and below the maximum paper mark Fig 2 15 5 Put the paper tray firmly back in the machine and unfold the support flap before you use the machine Fig 2 16 NOTE For details on supported paper specifications see About paper in Chapter 2 of the User s Guide Up the here Support flap ...

Page 35: ...e machine marked LINE and the other end to a modular wall jack Fig 2 19 WARNING The machine must be grounded using a 3 prong plug Since the machine is grounded through the power outlet you can protect yourself from potentially hazardous electrical conditions on the telephone network by keeping the power to your machine on when you connect it to a telephone line Similarly you can protect yourself w...

Page 36: ...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 Please set the receive mode to External TAD For more details see Connecting the MFC in Chapter 1 of the User s Guide Fig 2 21 TAD TAD ...

Page 37: ... and inserts it into your default word processor 6 Click Install NOTE If you see the following screen click OK to install the Windows updates After the updates are installed your PC may restart 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 direct...

Page 38: ...commended and then click Finish A test page will be printed so you can check the print quality 21 If the test page is printed correctly click Yes If you click No follow the prompts on the screen to correct the problem NOTE If the README file shown in step 22 appears close the README WRI file and then click Finish after printing the page 22 The README file will be displayed Please read this file fo...

Page 39: ...r 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 See AutoLoad the Brother Control Center Chapter 4 in the Documentation Software User s Guide located on the CD ROM OK A Basic Universal printer driver was installed with the MFL PRO Software Suite which is certified for use with Windows operating sys...

Page 40: ...XP Users Only Make sure that you followed the instructions in 1 to 16 on pages 2 13 to 2 14 17 When this screen appears connect the USB interface cable to your PC and then connect it to the machine Plug the machine into the AC power outlet Turn the power switch on It will take a few seconds for the installation screen to appear The installation of the Brother drivers will automatically start The s...

Page 41: ...rt is displayed in the window and click OK X is the drive letter of your CD ROM 28 Highlight the model you are installing from the list of machines and click Next NOTE Make sure you select a USB printer 29 The model you are installing will be listed in the window Select Yes or No if you want this driver to be your default printer and then click Next 30 If this screen appears select Do not share th...

Page 42: ...that converts an image into text and inserts it into your default word processor 6 Click Install NOTE If you see the following screen click OK to install the Windows updates After the updates are installed your PC may restart 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 ...

Page 43: ... cause damage to your machine 18 Click Next 19 The README file will be displayed Please read this file for troubleshooting information and then close the file to continue installation 20 Check the Run On Line Registration and then click Next 21 Click Finish to restart your computer 22 After the computer restarts the installation of the Brother drivers will automatically start Follow the instructio...

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 See AutoLoad the Brother Control Center Chapter 4 in the Documentation Software User s Guide located on the CD ROM OK A Basi...

Page 45: ...r drivers listed in the Printers selection The driver with Printer after the model name ex Brother MFC 8220 Printer is the Brother Native Driver OK The Brother Native Drivers have been installed and the installation is now complete For Windows XP Users Only Make sure that you followed the instructions in 1 to 16 on pages 2 18 to 2 19 17 When this screen appears connect the parallel interface cable...

Page 46: ... Port Selection and then click Next 24 Click on Have Disk 25 Browse the CD ROM and highlight your language folder and click Open Highlight the WXP folder and click Open Highlight the Addprt folder and click Open 26 Click Open 27 Make sure X ENG W2K Addprt is displayed in the window and click OK X is the drive letter of your CD ROM 28 Highlight the model you are installing from the list of machines...

Page 47: ...ft Text Bridge PC FAX software Remote Setup and True Type fonts PaperPort is a document management application for viewing scanned documents ScanSoft TextBridge which is integrated into PaperPort is an OCR application that converts an image into text and inserts it into your default word processor 7 Click Install NOTE If you see the following screen click OK to install the Windows updates After th...

Page 48: ...en appears check PS Printer Driver and then continue following the on screen instructions 18 The README file will be displayed Please read this file for troubleshooting information and then close the file to continue installation 19 Check the Run On Line Registration and then click Next 20 Click Finish to restart your computer 21 After the computer restarts click Yes to have the Control Center loa...

Page 49: ...ts ScanSoft TextBridge which is integrated into PaperPort is an OCR application that converts an image into text and inserts it into your default word processor 7 Click Install NOTE If you see the following screen click OK to install the Windows updates After the updates are installed your PC may restart If it does the installation will automatically continue If the installation does not continue ...

Page 50: ... Address 21 Enter the proper IP Address information for your network and then click OK e g Enter 192 168 0 105 for IP Address 22 Click Next NOTE See the For Administrator section of this guide or the NC 9100h User s Guide located on the CD ROM for more network configuration information Windows 98 98SE Me 2000 XP Users Go to 23 Windows 95 NT Users Go to 26 23 Select yes and then click Next 24 Click...

Page 51: ...ntrol 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 See AutoLoad the Brother Control Center Chapter 4 in the Documentation Software User s Guide located on the CD ROM OK For Windows 98 98SE Me 2000 Users The Brother PC FAX Printer and Scanner drivers have been installed and the installation is now complet...

Page 52: ...intosh 7 Connect the USB interface cable to your Macintosh and then connect it to the machine Caution Do not connect the machine to a USB port on a keyboard or a non powered USB hub 8 Plug the machine into the AC power outlet Turn the power switch on 9 From the Apple menu open the Chooser 10 Click the Brother Laser icon you installed On the right side of the Chooser select the printer to which you...

Page 53: ...o your Macintosh and then connect it to the machine Caution Do not connect the machine to a USB port on a keyboard or a non powered USB hub 8 Plug the machine into the AC power outlet Turn the power switch on 9 Select Applications from the Go menu 10 Open the Utilities folder 11 Open the Printer Center icon 12 Click Add Printer 13 Select USB 14 Select your machine and then click Add 15 Select Quit...

Page 54: ...the Start Here icon to install the printer scanner and PC FAX Send drivers If the language screen appears select your language 6 Click Install next to the MFL Pro Suite for your country 7 After the installation is completed restart your Macintosh 8 Connect the network interface cable to the printer and then connect it to a free port on your hub 9 Plug the machine into the AC power outlet Turn the ...

Page 55: ...r language 6 Click Install next to the MFL Pro Suite for your country 7 Select Network Interface and then click Install 8 Connect the network interface cable to the printer and then connect it to a free port on your hub 9 Plug the machine into the AC power outlet Turn the power switch on 10 Select Applications from the Go menu 11 Open the Utilities folder 12 Open the Print Center icon 13 Click the...

Page 56: ...a Fax data Low and high voltage power supplies AC Paper feeding mechanism Laser printing unit Provided on models supporting facsimile function Charging exposing developing transferring and heat fixing processes Electrical charger Laser unit including the polygon motor Laser sensitive drum Developer roller Transfer roller Heater roller Main motor Scanner unit ADF unit NCU Hand set Line Speaker CIS ...

Page 57: ...8MB 16MB RAM DIMM max 128MB EEPROM 512 x 8 bit 8192 x 8 bit CPU Core SPARClite 133MHz A S I C Oscillator 66 6MHz Address Decoder DRAM Control Timer FIFO CDCC Parallel I O Soft Support EEPROM I O Engine Control I O To Engine PCB BUS INT To PC USB I O To PC Network Program 1 5 MB STRAGE 0 5 MB PCI Bus Control Scanner Controller CIS unit Oscillator 12MHz Fig 3 2 ...

Page 58: ...DIX 4 1 to 4 6 MAIN PCB CIRCUIT DIAGRAM in this manual 1 3 1 CPU 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 by multiplying the source clock by two Fig 3 3 ...

Page 59: ...led by the DMA controller The transmission speed is 480Mbps or 12Mbps Fig 3 4 1 3 3 IEEE1284 Stores the data received from the PC into DRAM as controlled by the DMA controller It is applicable to both normal receiving and bi directional communication nibble mode byte mode ECP mode 74LVX161284 3 3V 5 0V level shifter IC stores the pull up resistance in signal wire at the connector side Fig 3 5 ...

Page 60: ...MFC 8220 SERVICE MANUAL 3 5 1 3 4 ROM Fig 3 6 ...

Page 61: ...CHAPTER 3 THEORY OF OPERATION 3 6 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: ...l 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 Fig 3 10 ...

Page 63: ...ne I O The interface with the engine PCB is by full duplex synchronous serial method of which transfer rate is 520kbps Fig 3 12 1 3 11 Panel I O The interface with the panel PCB is by full duplex synchronous serial method Fig 3 13 1 3 12 Video I O The video signal output from the ASIC is reversed through a transistor and output after being corrected by the buffer IC Fig 3 14 ...

Page 64: ...ated 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 1 9V is used for the CPU within the ASIC and the logic circuit Fig 3 16 ...

Page 65: ...or Thermistor Lower cassette sensor Polygon motor Upper paper exist sensor High voltage power supply Lower paper exist sensor Toner sensor Lower cassette exist sensor Cover sensor Paper eject sensor Front regist sensor Fixing unit cover sensor Rear regist sensor 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 ...

Page 66: ... The regulated output is listed below Regulated Output 3 3V 1 5A 8V 0 7A 24V 2 9A For the circuit diagram of the low voltage power supply PCB see APPENDIX 4 12 LOW VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM in this manual Heater Circuit Thermal Fuse Feedback Line Filter Fuse Rectifier Oscillator 24V Regulation Circuit 24V 3 3V Lamp Heater Engin Circuit Main Circuit 3 3V Regulation Circuit Lightning ...

Page 67: ...ircuit diagram of the high voltage power supply PCB see APPENDIX 4 13 and 4 14 HIGH VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM in this manual Transfer Roller Supply Roller Photosensitive Drum Development Roller Corona Unit Current Regulator Current Regulator Voltage Regulator Voltage Regulator T10 T402 Q405 T401 Q407 Voltage Regulator Z301 VR302 24VI GND VR401 Voltage Regulator VR301 Cleaning Brush ...

Page 68: ...tion pad Cassette pressure roller DRUM UNIT Scanner motor SCANNER UNIT Corona wire Heat roller Second eject roller Pressure plate Paper Feed roller Paper feed pinch roller Rear cover First feed roller First feed pinch roller Regist front actuator Supply roller Development roller Blade PAPER TRAY First eject roller FIXING UNIT Pressure roller Paper pick up roller ...

Page 69: ...e Each document advances with the document feed roller ASSY to the scanner and then it is fed out of the equipment with the document ejection roller ASSY 2 2 2 Scanner The scanner uses a contact image sensor CIS unit which consists of an LED array illuminating documents a self focus lens array collecting the reflected light a CIS PCB carrying out photoelectric conversion to output picture element ...

Page 70: ...ition absence of paper is detected by sensing the motion of the actuator 2 3 2 Paper registration After the paper top position is detected by the regist front actuator the paper separated into individual sheets by the paper pick up roller is fed further for a specified time and the paper top position reaches the paper feed roller so that the paper skew is adjusted Then the solenoid is turned off t...

Page 71: ... first eject roller in the fixing unit The paper eject actuator detects whether the paper is ejected correctly or not After the paper exits from the first eject roller the paper is turned by the rear cover and ejected face down into the top output tray through the second eject roller If the rear cover is open the paper is ejected face up straight to the printer rear straight paper path Fig 3 23 Se...

Page 72: ...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 They also detect whether or not the drum unit is installed The toner cartridge is installed in the drum unit Fig 3 25 Toner sensor Light emission Toner sensor Light reception Document cover sensor ...

Page 73: ... Detect if the paper tray is installed They also detect if there is paper in the paper tray Fig 3 26 2 4 4 Paper eject sensor Detects if paper is ejected from the fixing unit Fig 3 27 Paper empty sensor Eject sensor PCB ASSY Cassette sensor PCB ASSY Cassette sensor Fixing unit ...

Page 74: ...ent is placed on the ADF Document front sensor It detects that a document is finished to be fed Document rear sensor Fig 3 28 2 4 6 Regist sensor It detects whether paper is fed from the paper tray or the manual feed tray Fig 3 29 Document front sensor Document rear sensor Engine PCB ASSY Regist sensor ...

Page 75: ...Charging The drum is charged to approximately 870V by an ion charge which is generated by the primary charger The charge is generated by ionization of the corona wire which has a DC bias from the high voltage power supply applied to it The flow of the ion charge is controlled by the grid to ensure it is distributed evenly on the drum surface The aluminum drum sleeve in the photosensitive drum is g...

Page 76: ...surface potential of the exposed area is reduced forming the electrostatic image to be printed Fig 3 32 Drum Lens Laser beam Polygon mirror Paper Laser detector Laser diode Motor Laser beam f θ lens 3 Primary charging Laser beam exposure and developing a Unexposed area Non image area b Exposed area Image area Transfer the image to paper Time Drum sleeve 0 2 1 1 2 3 a b 150 400 870 Surface potentia...

Page 77: ...ctrostatic potential to attract toner particles from the development roller to the latent image area on the drum surface Fig 3 33 2 7 4 Transfer 1 Transfer process After the drum has been charged and exposed and has received a developed image the toner formed is transferred onto the paper by applying a negative charge to the back of the paper The negative charge applied to the paper causes the pos...

Page 78: ...ressure 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 Fig 3 34 First eject roller Thermistor Pressure roller Heat roller ...

Page 79: ...ur body may damage electronic parts When transporting PCBs be sure to wrap them in conductive sheets 5 When replacing the PCB and all the other related parts put on a grounding wrist band and perform the job on a static mat Also take care not to touch the conductor sections on the flat cables or on the wire harness 6 Be sure to replace self tapping screws correctly if removed Unless otherwise spec...

Page 80: ...ER BATTERY ASSY 8 OUTER CHUTE 7 DOCUMENT SCANNER REAR COVER L R 10 SIDE COVER L R MAIN PCB ASSY 16 BASE PLATE LV INSULATION SHEET 17 LASER UNIT 15 FRAME L DRIVE UNIT FAN MOTOR 60 UNIT LV FAN MOTOR 60 UNIT 24 FRAME R 25 PAPER FEEDER 21 22 THERMISTOR ASSY 23 TOP COVER ASSY 11 HIGH VOLTAGE PS PCB ASSY LOW VOLTAGE PS PCB ASSY 19 ENGINE PCB ASSY 18 20 NCU 13 FIXING UNIT 14 ...

Page 81: ...NUAL 4 3 3 DISASSEMBLY PROCEDURE 3 1 Power Cord 1 Disconnect the power cord from the machine Fig 4 1 3 2 Drum Unit 1 Open the front cover ASSY and remove the drum unit Fig 4 2 Power cord Machine Drum unit Front cover ASSY ...

Page 82: ... Close the front cover ASSY and pull out the paper tray 2 Remove the paper from the paper tray Fig 4 3 3 Remove the pad holder and the separation pad spring from the paper tray Fig 4 4 Front cover ASSY Paper tray Pad holder Separation pad spring Paper tray 1 2 ...

Page 83: ... a suitable amount of grease referring to the figure below Fig 4 5 4 Remove the four bind B M4x12 Taptite screws and then remove the paper tray front cover Fig 4 6 Paper tray Paper pick up roller Grease Molykote PG 662Y 4 mm dia ball Taptite bind B M4x12 Taptite bind B M4x12 Paper tray front cover Paper tray Hook Hook ...

Page 84: ...the two cup B M3x10 Taptite screws and then remove the paper tray cover Fig 4 7 6 Remove the pressure roller holder ASSY Fig 4 8 Paper tray Taptite cup B M3x10 Paper tray cover Flat screwdriver Pressure roller holder ASSY Paper tray Taptite cup B M3x10 ...

Page 85: ...y holder ASSY from the pressure roller holder ASSY 10 Remove the two scratch spongy springs 11 Remove the scratch spongy from the scratch spongy holder ASSY Fig 4 10 Pressure roller shaft Pressure roller holder ASSY Scratch spongy Scratch spongy holder ASSY Pressure roller holder ASSY Scratch spongy springs 1 2 Pressure roller collar ...

Page 86: ...ever and then disengage the catches of the side guides R and L from the side guide rack Fig 4 11 14 Remove the side guides right and left from the paper tray Fig 4 12 Taptite cup B M2 6x5 Taptite cup B M2 6x5 Side guide rack Lock lever Paper tray Catches Paper tray Side guide L Side guide R Side guide L Side guide L 2 2 1 2 1 2 1 Side guide rack ...

Page 87: ... two catches B of the plate while pulling the plastic frame outwards to remove the pressure plate ASSY Fig 4 13 16 Unhook the pressure plate spring from the plastic hook to remove the two pressure plate springs Fig 4 14 Pressure plate ASSY Plastic frame Catches A Paper tray Paper tray Pressure plate spring Pressure plate spring Catch B Hook ...

Page 88: ...ate do not bend the pressure plate gently ease the plastic cover If the pressure plate is deformed paper feeding problems may occur 17 Remove the herical extension spring 18 Remove the lock lever Fig 4 15 NOTE When re assembling the lock lever insert it upwards from underneath the cassette and rotate it until the two catches lock into place Herical extension spring Lock lever 1 2 3 Paper tray Pape...

Page 89: ...screw and then remove the side guide gear and the friction spring 20 Remove the two side guide racks Fig 4 16 21 Remove the paper indicator Fig 4 17 Side guide rack Side guide rack Paper tray Paper indicator Taptite cup B M3x8 Side guide gear Friction spring 2 1 1 ...

Page 90: ...mbling the paper tray remove the old grease and apply a suitable amount of grease onto both sides of the paper tray referring to the figure below Fig 4 18 22 Remove the pan B M3x8 Taptite screw and then remove the tray lock lever 23 Release the four hooks to remove the paper tray rear from the paper tray Fig 4 19 Taptite pan B M3x8 Tray lock lever Paper tray Hook Paper tray rear Paper tray Grease ...

Page 91: ...MANUAL 4 13 24 Remove the paper rear guide Fig 4 20 3 4 Rear Cover C 1 Remove the bind B M4x12 Taptite screw and then remove the rear cover C Fig 4 21 Paper tray Paper rear guide 2 1 1 Rear cover C Taptite bind B M4x12 ...

Page 92: ...e 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 Fig 4 23 Access cover Hooks Hooks Hooks Hooks Access plate screw Access plate screw Access plate Main PCB ASSY Access plate Battery...

Page 93: ...MFC 8220 SERVICE MANUAL 4 15 5 Cut the binding band which secures the battery ASSY to the access plate and then remove the battery ASSY Fig 4 24 Battery ASSY Binding band Access plate ...

Page 94: ...E ASSEMBLY 4 16 3 6 Control Panel ASSY 1 Remove the two pins and then remove the control panel ASSY Fig 4 25 2 Disconnect the connector from the control panel ASSY Fig 4 26 Connector Pin Control panel ASSY Pin Control panel ASSY ...

Page 95: ...he spring plate ADF front 4 Remove the separation rubber rubber holder and rubber holder spring Fig 4 27 5 Remove the actuator R Fig 4 28 Control panel ASSY Taptite cup B M3x6 Spring plate ADF front Separation rubber Rubber holder Rubber holder spring Control panel ASSY Actuator R Hook ...

Page 96: ...hen remove the document hold ASSY Fig 4 29 7 Remove the three cup B M3x8 Taptite screws 8 Release the three hooks and then remove the paper feed chute Fig 4 30 Control panel ASSY Hooks Document hold ASSY Boss Boss Taptite cup B M3x8 Paper feed chute Hooks Hook 1 2 Control panel ASSY ...

Page 97: ...d then remove the FPC key 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 Fig 4 32 Paper feed chute Actuator F 1 2 FPC key Cable Panel PCB ASSY Control panel ASSY Cable ...

Page 98: ... When connecting flat cable s do not insert them at an angle After insertion check that the cables are not at an angle 12 Remove the two cup B M3x8 Taptite screws and release the two hooks and then remove the panel PCB ASSY Fig 4 33 13 Release the two hooks and then remove the LCD holder Fig 4 34 Taptite cup B M3x8 Back light PCB ASSY Hooks Hooks Panel PCB ASSY Panel PCB ASSY Back light PCB ASSY L...

Page 99: ... and then remove the back light PCB ASSY Fig 4 35 3 7 Document Scanner 1 Remove the four screws and then remove the document chute ASSY 2 Disconnect the two connectors scanning motor CIS unit Fig 4 36 Back light PCB ASSY Hooks LCD Hooks LCD holder Screws Screws Document chute ASSY CIS unit Scanning motor ...

Page 100: ... 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 Fig 4 38 Hook Hooks 1 2 3 4 Document chute ASSY CIS unit Hook Ejection roller 1 2 3 Gear cover Hook Screws LF ground plate spring ...

Page 101: ...20 SERVICE MANUAL 4 23 7 Release the hook and then remove the LF roller Fig 4 39 8 Remove the ejection pinch roller Fig 4 40 Hook LF roller Document chute ASSY 1 2 3 Document chute ASSY Ejection pinch roller ...

Page 102: ...r B4 from the ejection pinch roller 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 Fig 4 42 Ejection pinch roller Ejection roller B4 Screw pan S P washer M3x6 Scanning motor Hook 1 1 2 ...

Page 103: ...RVICE MANUAL 4 25 12 Release the hook and then remove the two document separation roller Fig 4 43 13 Remove the LF ground spring Fig 4 44 Document separation roller Hook Document separation roller LF ground spring ...

Page 104: ...CHAPTER 4 DISASSEMBLY AND RE ASSEMBLY 4 26 3 8 Outer Chute 1 Remove the outer chute Fig 4 45 2 Remove the outer chute tray Fig 4 46 Hook Outer Chute Outer Chute Outer chute tray ...

Page 105: ...e 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 Fig 4 47 Taptite bind B M4x12 Rear cover L Taptite bind B M4x12 Hook Hook Taptite bind B M4x12 Rear cover R ...

Page 106: ...B M4x12 Taptite screws and then remove the side cover R Fig 4 48 2 Remove the four bind B M4x12 Taptite screws and then remove the side cover L Fig 4 49 Side cover R Taptite bind B M4x12 Side cover L Taptite bind B M4x12 Taptite bind B M4x12 Taptite bind B M4x12 Taptite bind B M4x12 Hooks ...

Page 107: ... 1 Disconnect the four connectors Fig 4 50 2 Release the hook and then remove the speaker hold spring and the speaker Fig 4 51 Speaker hold spring Hook Speaker Main PCB ASSY Connector HS holder Connector CIS Connector Speaker Connector Control panel ...

Page 108: ...se the four hooks and then remove the top cover ASSY Fig 4 52 4 Remove the two cup B M3x10 Taptite screws and two pins and then remove the handset holder ASSY Fig 4 53 Screw Top cover ASSY Taptite cup B M3x10 Handset holder ASSY 2 1 Pin Screw Hooks Top cover ASSY Hook Hook ...

Page 109: ...5 Release the four hooks and then remove the handset holder upper Fig 4 54 6 Release the hook and then remove the hook PCB ASSY Fig 4 55 Hooks Hooks Handset holder upper Handset holder lower Hook Hook PCB ASSY Handset holder lower ...

Page 110: ...Taptite screws 8 Release the two hooks and then remove the inner chute Fig 4 56 9 Remove the eject roller ASSY from the top cover ASSY Fig 4 57 Taptite bind B M4x12 Taptite bind B M4x12 Taptite bind B M4x12 Inner chute Hook Hook Top cover ASSY Top cover ASSY Eject roller ASSY ...

Page 111: ...ller holder Fig 4 58 11 Remove the paper stopper and the paper stopper S Fig 4 59 NOTE For the way how to attach the additional ribs refer to LOCATION TO ATTACH THE ADDITIONAL RIBS in APPENDIX 5 Paper stopper Paper stopper S Corrugation pinch roller L R Pinch roller holder Inner chute ...

Page 112: ...CHAPTER 4 DISASSEMBLY AND RE ASSEMBLY 4 34 3 12 Front Cover ASSY 1 Release the link 2 Remove the front cover ASSY Fig 4 60 Frame Front cover ASSY Link ...

Page 113: ...x6 Taptite screw and then remove the NCU shield cover 4 Disconnect the two connectors of the NCU harness 5 Remove the two cup S M3x6 Taptite screws and then remove the NCU PCB ASSY Fig 4 62 Taptite cup S M3x6 Taptite cup S M3x6 Taptite cup S M3x6 Taptite cup S M3x6 NCU shield cover NCU shield plate Hook Hook NCU harness NCU PCB ASSY NCU unit Main PCB ASSY NCU harness ...

Page 114: ...it Fig 4 63 3 Remove the three cup B M3x10 Taptite screws and then remove the FU front paper guide from the fixing unit Hint Regarding the proper mounting orientation of the FU front paper guide please refer to Fig 4 62 Be sure not to mount it upside down Fig 4 64 Pin Pins FU front paper guide Taptite cup B M3x10 Fixing unit Fixing unit Thermistor harness Heater harness Taptite bind B M4x12 Should...

Page 115: ...Remove the cup B M3x12 Taptite screw 6 Release the thermistor ASSY harness from the four hooks 7 Remove the thermistor ASSY Fig 4 66 Thermistor relay PCB ASSY Taptite cup B M3x10 Fixing unit Pins Pin Star wheel holder Taptite cup B M3x12 Fixing unit Thermistor ASSY Hooks Hook Thermistor relay PCB ASSY Thermistor ASSY harness ...

Page 116: ...ct referring to the figure below 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 Fig 4 68 Thermistor Thermistor Taptite cup B M3x12 FU frame upper FU frame lower Hook Hook Pin FU frame upper Hook Pin Hook Taptite cup B M3x20 Taptite cup B M3x20 ...

Page 117: ...hen securing the screw to assemble the halogen lamp connector plate ensure you use the Fu lamp assembly jig ASSY as shown in the figure below to avoid damaging the edge of the halogen lamp Fig 4 70 Screw pan S P washer M26x8 Fu lamp assembly jig ASSY Halogen lamp connector plate Halogen lamp Screw pan S P washer M26x8 Heat roller 25 FU frame upper Heat roller 25 Halogen lamp Halogen lamp connector...

Page 118: ...R bearing 25 Fig 4 71 CAUTION Never touch the surface of the heat roller NOTE When re assembling the heat roller 25 to the FU frame upper place the two projections onto the bosses on the frame as shown in the figure below Fig 4 72 HR gear 34 HR retaining ring 25 Heat roller 25 HR bearing 25 Heat roller 25 projection HR gear 34 HR bearing 25 boss Heat roller washer 25 HR bearing 25 ...

Page 119: ... upper ensure you do not damage the heat roller 25 with the four separate claw ASSY on the FU frame upper Fig 4 73 18 Remove the pressure roller 25 Fig 4 74 Separate claw ASSY FU frame upper Separate claw ASSY Heat roller 25 Pressure roller 25 FU frame lower FU jam remove cover 2 3 1 ...

Page 120: ... direction of the roller is correct referring to the figure above Ensure that the both springs are seated correctly in the locating channel and does not protrude from either end Ensure also that the proper spring is fixed to the each cleaner pinch roller ASSY because the both springs are NOT identical with each other Fig 4 76 FU frame lower Cleaner pinch roller ASSY S Cleaner pinch roller ASSY S C...

Page 121: ...rew and then remove the eject sensor PCB ASSY 26 Remove the bind B M3x10 Taptite screw and then remove the thermistor relay PCB ASSY Fig 4 77 27 Remove the paper eject actuator and eject actuator spring Fig 4 78 Taptite bind B M3x10 Taptite bind B M3x10 FU frame lower Thermistor relay PCB ASSY Eject sensor PCB ASSY FU frame lower Eject actuator spring Paper eject actuator Hook Hooks Hook Eject sen...

Page 122: ...n the locating channel referring to the figure below Fig 4 79 28 Disconnect the heater harness 29 Remove the four cup B M3x6 Taptite screws 30 Remove the four separate claw holder plate 31 Remove the four separate claw ASSY Fig 4 80 Paper eject actuator Eject actuator spring FU frame lower Separate claw ASSY Separate claw ASSY Heater harness Separate claw holder plate Taptite cup B M3x6 Tweezers ...

Page 123: ...d 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 3 Disconnect the polygon motor harness and remove the spongy from the polygon motor harness 4 Remove the six cup S M3x8 Taptite screws and then remove the laser unit Fig 4 82 Filter Air duct Taptite cup S M3x8 Taptite cup S M3x8 LD harness 5P Laser u...

Page 124: ... 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 2 Disconnect the four connectors Fig 4 84 Shutter arm C Frame L Main PCB ASSY Panel PCB connector Engine PCB connector LVPS connector Thermistor connector LD harness 5P Main PCB ASSY ...

Page 125: ...ing the Main PCB please perform the following operations Chapter 7 3 12 CIS Scanner Area Setting Maintenance mode 55 Refer to P7 20 APPENDIX 1 EEPROM CUSTOMIZING CODES Refer to A 1 APPENDIX 2 1 INSTALING THE UPDATE DATA TO THE MACHINE Refer to A 2 APPENDIX 2 2 SETTING ID CODES TO MACHINES Refer to A 4 Main PCB ASSY Taptite cup S M3x6 Taptite cup S M3x6 Screw pan M3x6 ...

Page 126: ...he pan washer M3 5x6 Taptite screw and then remove the ground wire 4 Remove the base plate Fig 4 86 5 Remove the two bind B M4x12 Taptite screws and then remove the LV insulation sheet Fig 4 87 Taptite cup S M3x6 Taptite bind B M4x12 Taptite bind B M4x12 Taptite bind B M4x12 Taptite cup S M3x6 Base plate Screw pan washer M3 5x6 Ground wire LV insulation sheet Taptite bind B M4x12 ...

Page 127: ...e Fig 4 88 2 Remove the two bind B M4x12 Taptite screws and then remove the engine PCB ASSY Fig 4 89 Taptite bind B M4x12 Engine PCB ASSY Engine PCB ASSY Toner sensor light reception connector Thermistor relay PCB connector Main motor connector Main PCB connector FR solenoid connector PF solenoid connector Fan motor 60 unit connector LT connector Polygon motor connector Fan motor 60 connector LVPS...

Page 128: ... 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 Fig 4 90 3 20 Low voltage PS PCB ASSY 1 Remove the bind B M4x12 Taptite screw 2 Disconnect the three connectors from the low voltage PS PCB and then remove the low voltage PS PCB ASSY Fig 4 91 Main PCB Engine PCB connector Heater connector Taptite bind B M4x...

Page 129: ...fan motor 60 unit 6 Remove the low voltage PS PCB Fig 4 92 Hint Inlet Harness Installation Procedure 1 Mount the inlet 2 Mount the fan motor 60 unit 3 Pull the inlet harness behind the fan motor 60 unit to the side of the SW holder to take up the slack Important 4 Mount the SW holder Taptite bind B M4x12 Inlet holder Inlet SW holder Taptite bind B M4x12 Low voltage PS PCB Fan motor 60 unit ...

Page 130: ...Remove the two roller collars from the paper pick up roller ASSY Fig 4 93 4 Remove the bind B M3x10 Taptite screw and then remove the PE sensor cover 5 Remove the cassette sensor PCB ASSY Fig 4 94 Roller collar Roller collar Paper pick up roller ASSY Bush R Taptite bind B M3x10 PE sensor cover Cassette sensor PCB ASSY 1 2 ...

Page 131: ...d wire from the conductor bearing Hint Make sure to mount the extension spring P R and the ground wire in proper positions upon assembly If they are mounted in improper positions tension fails to be applied to the sector gear 63 P R and it might cause a feeding failure Fig 4 96 Gear 63P R Spring extension P R Ground wire PE actuator CA actuator Frame Hooks Conductor bearing Hook ...

Page 132: ...P R shaft 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 Fig 4 98 Bush L P R shaft 1st F R shaft Conductor bearing Taptite bind B M3x10 Idle gear 22 Frame Hook 1 2 Middle roller gear ...

Page 133: ...e guide ASSY 19 Remove the front chute guide ASSY 20 Remove the front tray chute ASSY 21 Remove the roller 6 pressure roller shaft and roller 6 guide Fig 4 100 Front chute ASSY Taptite bind B M4x12 Taptite bind B M4x12 Taptite cup S M3x6 Taptite cup S M3x6 Roller 6 guide Front tray chute ASSY Front chute guide ASSY Taptite shoulder bind B M3x7 5 Taptite shoulder bind B M3x7 5 Front chute ASSY 1 4 ...

Page 134: ...B M4x12 Taptite screws and then remove the chute 3 Fig 4 101 23 Remove the feed roller gear 24 Remove the bearing F R 25 Remove the feed roller gear shaft Fig 4 102 Feed roller gear shaft Feed roller gear Bearing F R Bearing F R Hook Frame Taptite bind B M4x12 Chute 3 ...

Page 135: ...ller ASSY 28 Remove the joint 5 and the bearing 5 from the feed roller ASSY Fig 4 103 NOTE Be careful that the different direction installation causes jam when you install joint 5 See the figure below If the joint 5 is mounted in a wrong orientation it might cause a paper jam Fig 4 104 Bearing 5 Joint 5 Feed roller ASSY Hook 1 2 3 4 5 Bearing 5 Joint 5 ...

Page 136: ...gist rear actuator spring Fig 4 106 NOTE When assembling the regist front actuator and the regist rear actuator set the spring as shown in the figure Fig 4 107 Regist front actuator Regist front actuator spring Regist rear actuator Regist rear actuator spring Chute cover Hook Hook Regist front actuator spring Regist rear actuator Regist rear actuator spring Regist front actuator Hole Hole ...

Page 137: ...ain 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 Fig 4 108 Taptite bind B M3x10 Taptite bind B M3x10 Under bar Under bar Main PCB sheet Main frame L unit Taptite bind B M4x12 Taptite bind B M4x12 ...

Page 138: ...3x6 Taptite screw and then remove the sub gear plate 8 Remove the LD harness 5P from the drive unit 9 Remove the drive unit 10 Disconnect the connector for the main motor harness from the main motor ASSY Fig 4 109 Taptite bind B M4x12 Taptite bind B M4x12 Taptite cup S M3x6 Taptite cup S M3x6 Main motor harness Taptite cup S M3x6 Sub gear plate Main frame L unit Drive unit Main motor ASSY Ground s...

Page 139: ...oint and remove the joint stopper 14 Remove the gear 25 130 and fuser drive gear from the drive unit Fig 4 110 15 Remove the gear 40 54Y gear 17 planetary gear 45 arm F R and gear 20 center F R from the frame L Fig 4 111 Taptite cup S M3x6 Main motor ASSY Drive unit Taptite cup S M3x6 Develop joint Joint stopper Joint spring Gear 40 54Y Gear 17 planetary Gear 20 center F R Gear 45 arm F R Gear 25 ...

Page 140: ...nect the connector from the document cover sensor 21 Remove the bind B M3x10 Taptite screw 22 Remove the toner LED PCB unit ASSY 23 Remove the sensor clip 24 Remove the document cover sensor from the frame L Fig 4 113 Taptite bind B M3x10 F R solenoid ASSY Solenoid release spring P R P R solenoid ASSY Toner LED PCB unit ASSY Sensor clip Document cover sensor Sensor clip P R solenoid lever Solenoid...

Page 141: ...tor ASSY 1 Remove the 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 Fig 4 115 Main frame R unit Fan motor 60 unit Fan motor 60 unit LV Thermistor ASSY Frame L ...

Page 142: ...ite 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 Fig 4 116 Taptite bind B M4x12 Taptite cup S M3x6 Under bar Main frame R unit Under bar Taptite cup S M3x6 Taptite bind B M4x12 Taptite bind B M4x12 Taptite cup S M3x16 ...

Page 143: ...S M3x6 Taptite screw 7 Remove the drum spring R 8 Remove the FG plate Fig 4 117 9 Remove the toner sensor PCB unit Light reception Fig 4 118 Toner sensor PCB unit Light reception Pin Drum spring R Taptite bind B M4x12 Taptite bind B M4x12 FG plate Taptite cup S M3x6 Main frame R Main frame R ...

Page 144: ... Carton Drum unit ASSY User s manual Quick set up guide ADF document output support ADF document support Polystyrene foam ASSY Power cord Polystyrene foam ASSY CD ROM Handset curled cord Telephone handset Telephone line cord plug Telephone line cord Polystyrene foam ASSY ...

Page 145: ...B RMA3 NP303 H only Component side Sn Ag Cu Nihon Genma Japan DHB RMA3 NP303 We use wire solder which is indicated by digit after LF indication on PCB Wire solder made in the contries except Japan are under investigation and will be evaluated 3 Appearance quality criteria The appearance of the surface of portions soldered with lead free solder is basically the same as that for those soldered with ...

Page 146: ...nt of the lead free solder is higher The temperature of the soldering iron s tip is restricted to the temperature that the component to be soldered can resist It should be noted that the temperature that the components to be soldered with lead free solder can resist has not increased even though the melting point of the solder has 5 A soldering iron must be correctly applied Even though the meltin...

Page 147: ...ng operations The soldering irons used at BIL are model no 941 manufactured by HAKKO and M6 SIC 40 manufactured by BONKOTE The prices of these soldering irons for use with lead free solder are three to four times higher than those for conventional soldering irons with a temperature controller built in 7 No mixing of different solders When repairs are made on a PCB with an LF indication on it lead ...

Page 148: ...Driver PCB ASSY 3 0 392 0 049 4 0 5 3 087320 616 Taptite cup S M3x6 Driver PCB shield 1 0 686 0 098 7 1 Joint cover ASSY 4 Side cover R 3 Side cover L 4 Rear cover R 2 Rear cover L 2 4 085412 216 Taptite bind B M4x12 Driver PCB access cover 1 0 784 0 098 8 1 5 087310 815 Taptite cup B M3x8 LF ground spring 1 0 294 0 053 3 0 5 6 087311 016 Taptite cup B M3x10 HS holder 2 0 588 0 098 6 1 3 Document ...

Page 149: ... Idle gear 16A Shaft idle gear 16 Idle gear 16A Drive unit Gear 58 88 Pendulum gear 22 Pendulum gear 22 Gear 40 54Y Gear 45 arm F R Gear 17 planetary Gear 20 center F R Flame L PG4 Molykote PG 662Y 4 mm dia ball BG4 Grease BG999 4 mm dia ball EM3 Molykote EM D110 3 mm dia ball Gear 58 88 Fuser drive gear Gear 25 130 Gear 25 130 Fuser drive gear ...

Page 150: ...CHAPTER 4 DISASSEMBLY AND RE ASSEMBLY 4 72 EM4 EM4 EM4 Molykote EM D110 4 mm dia ball Eject roller ASSY ...

Page 151: ...PCB Front Front Front Front Front Front Front Front 1 Fan motor 60 unit 2 Fan motor 60 unit LV 3 Laser unit Polygon motor harness 4 Toner sensor PCB Engine PCB ASSY Engine PCB ASSY Engine PCB ASSY Engine PCB ASSY Fan motor 60 unit Fan motor 60 unit LV Laserunit ...

Page 152: ...rmistor 6 Panel PCB 8 Scanning motor 7 CIS unit 9 Laser unit LD harness 5P 5 Front Front Front Front Front Front CIS unit Panel PCB Panel PCB Scanning motor Main PCB ASSY Main PCB ASSY Main PCB ASSY Main PCB ASSY Main PCB ASSY Laser unit Thermistor ...

Page 153: ...AL 4 75 Handset holder ASSY Hook PCB ASSY Handset holder ASSY Main PCB ASSY Speaker Speaker 10 12 11 Hook PCB ASSY Main PCB ASSY Main PCB ASSY Engine PCB ASSY LVPS PCB ASSY Main PCB ASSY Front Front Front Front Front Front ...

Page 154: ...e drum unit is approximately 20 000 pages when printing A4 size paper at 5 print coverage The actual number of pages that your drum will print varies depending on an average print job type and type of paper to be used NOTE There are many factors that determine the actual drum life such as temperature humidity type of paper type of toner used number of pages per print job and so on Under ideal cond...

Page 155: ...tain toner How to Check the Remaining Drum Life Press the Menu 2 0 and 3 keys in this order and the drum life is displayed on the LCD for 2 seconds Drum Life Remaining xx Fig 5 2 Replacement Procedure 1 Press the front cover release button and then open the front cover of the machine 2 Pull out the drum unit Fig 5 3 CAUTION We recommend that you place the drum unit on a piece of disposable paper o...

Page 156: ... Only unpack a drum unit immediately before you need to install it into the machine If an unpacked drum unit is subjected to excessive direct sunlight or room light the unit may be damaged Handle the drum unit and toner cartridge carefully If toner scatters on your hands or clothes wipe or wash it off with cold water immediately Discard the used drum unit according to local regulations keeping it ...

Page 157: ...n the page and the print density setting The more that is printed the more toner will be used If you change the print density setting for lighter or darker printing the amount of toner that is used will change Wait to unpack the toner cartridge until immediately before you install it in the machine Toner Low message When the toner cartridge is running low the LCD shows Toner Low Toner Low Fig 5 6 ...

Page 158: ... from side to side five or six times to spread the toner evenly inside the cartridge Fig 5 9 5 Remove the protective cover Fig 5 10 6 Put the new toner cartridge firmly into the drum unit until you hear it lock into place If you put it in properly the lock lever will lift automatically Make sure you fit the toner cartridge properly or it may separate from the drum unit Fig 5 11 7 Clean the primary...

Page 159: ...the quality and life of the machine itself It may also cause serious damage to the performance and life of a genuine Brother drum unit Warranty cover is not applied to problems caused by the use of 3rd party toner or toner cartridges Brother strongly recommends that you do not refill the toner cartridge provided with the machine We also strongly recommend that you continue to use only Genuine Brot...

Page 160: ...gradually decreased as the printing is performed 3 The bias voltage will change to 300V when 7000 sheets are printed and it will get fixed once reached to 300V until the message either Toner Empty or Toner Low appears The reason the toner cartridge needs to be replaced from the one which is empty or near empty to the new one which is full of toner is that the machine is initialized to set developi...

Page 161: ...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: ...SEMBLY AND RE ASSEMBLY Parts Name Part No Qty Service life number of prints Replacement Procedure Fixing Unit 115V LM2579001 1 80 000 pages See subsection 3 14 in CHAPTER 4 Fixing Unit 220V LM2578001 1 80 000 pages See subsection 3 14 in CHAPTER 4 Paper Feeding Kit Pad holder Paper pick up roller ASSY LJ7920001 1 50 000 pages See subsection 3 3 and 3 21 in CHAPTER 4 NOTE The above table shows only...

Page 163: ...MAINTENANCE 5 10 2 1 Fixing Unit Disassembly Procedure 1 Disconnect the power cord from the machine Fig 5 13 2 Close the front cover ASSY and pull out the paper tray Fig 5 14 Front cover ASSY Power cord Paper Tray Machine ...

Page 164: ...MFC 8220 SERVICE MANUAL 5 11 3 Remove the bind B M4x12 Taptite screw and then remove the rear cover C Fig 5 15 4 Remove the outer chute Fig 5 16 Hook Rear cover C Outer chute Taptite bind B M4x12 ...

Page 165: ...ar cover L 6 Remove the two bind B M4x12 Taptite screws and then remove the rear cover R Fig 5 17 7 Remove the two cup S M3x6 Taptite screws and then remove the NCU unit Fig 5 18 Taptite bind B M4x12 Rear cover R Rear cover L Hook Taptite bind B M4x12 Taptite cup S M3x6 NCU unit Hook Taptite bind B M4x12 ...

Page 166: ...connect the heater harness and thermistor harness 9 Remove the bind B M4x12 Taptite screw and the shoulder screw and then remove the fixing unit Fig 5 19 Shoulder screw Heater harness Taptite bind B M4x12 Thermistor harness Fixing unit ...

Page 167: ...ind B M4x12 Taptite screw and the shoulder screw 2 Insert the heater harness and the thermistor harness Fig 5 20 3 Mount the NCU unit using the two cup S M3x6 Taptite screws Fig 5 21 Shoulder screw Heater harness Taptite bind B M4x12 Thermistor harness Fixing unit Taptite cup S M3x6 NCU unit ...

Page 168: ... the two bind B M4x12 Taptite screws 5 Mount the rear cover R using the two bind B M4x12 Taptite screws Fig 5 22 6 Mount the outer chute Fig 5 23 Taptite bind B M4x12 Rear cover R Rear cover L Hook Taptite bind B M4x12 Hook Taptite bind B M4x12 Hook Outer chute ...

Page 169: ...CHAPTER 5 PERIODIC MAINTENANCE 5 16 7 Mount the rear cover C using the bind B M4x12 Taptite screw Fig 5 24 8 Insert the paper tray Fig 5 25 Taptite bind B M4x12 Front cover ASSY Paper Tray Rear cover C ...

Page 170: ...MFC 8220 SERVICE MANUAL 5 17 9 Insert the power cord to the machine Fig 5 26 Power cord Machine ...

Page 171: ...NTENANCE 5 18 2 2 Paper Feeding Kit Disassembly Procedure 1 Disconnect the power cord from the machine Fig 5 27 2 Close the front cover ASSY and pull out the paper tray Fig 5 28 Machine Power cord Front cover ASSY Paper tray ...

Page 172: ...from the paper tray Fig 5 29 4 Turn the machine over 5 Remove the bush R 6 Remove the paper pick up roller ASSY 7 Remove the two roller collars from the paper pick up roller ASSY Fig 5 30 Pad holder Separation pad spring Paper pick up roller ASSY Bush R Roller collar Roller collar 1 2 ...

Page 173: ... up ASSY 2 Mount the paper pick up roller ASSY 3 Mount the bush R 4 Turn the machine back to the original orientation Fig 5 31 5 Mount the pad holder and the separation pad spring to the paper tray Fig 5 32 Paper pick up roller ASSY Bush R Roller collar Roller collar 2 1 Pad holder Separation pad spring ...

Page 174: ...MFC 8220 SERVICE MANUAL 5 21 6 Insert the paper tray Fig 5 33 7 Insert the power cord to the machine Fig 5 34 Front cover ASSY Paper Tray Power cord Machine ...

Page 175: ...utlet 3 1 Cleaning the Machine Exterior Clean the machine exterior to keep the machine clean 1 Turn off the power switch and unplug the power cord 2 Wipe dirt and dust away from the machine exterior with a damp cloth and allow the machine to dry completely before turning the power on again 3 Plug in the power cord CAUTION Use water or neutral detergents for cleaning Cleaning with volatile liquids ...

Page 176: ...to the home position before re install the drum unit Fig 5 36 CAUTION Make sure that the blue tab on the drum unit is returned to the home position mark position before re installing the drum unit into the machine or printed pages may have vertical stripes 5 Re install the drum unit into the machine 6 Close the front cover 3 4 Cleaning the Scanner Window When replacing the drum unit or toner cartr...

Page 177: ...and your hands or cloths get dirty immediately wipe or wash it off with cold water Do not touch the scanner window with your fingers Do not wipe the scanner window with isopropyl alcohol 3 5 Cleaning the Electrical Terminals To obtain the best print performance be sure to clean the electrical terminals inside the machine 1 Turn off the power switch and unplug the power cord 2 Remove the drum unit ...

Page 178: ...etween 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: ... room is well ventilated The machine is not placed where the ventilation hole of the machine is blocked 2 Print paper Check if A recommended type of print paper is being used If the paper is too thick or too thin or tends to curl paper jams or paper feed problems may occur or printed images may be blurred The print paper is damp If so use fresh paper and check whether the print quality improves or...

Page 180: ...ndensation has occurred print several pages or leave the machine for 2 hours to allow it to reach room temperature If the drum unit is unpacked soon after it is moved from a cold room to a warm room condensation may occur inside the unit which may cause incorrect images Instruct the user to allow the unit to come to room temperature before unpacking it This will take one or two hours 1 2 Warnings ...

Page 181: ...tart printing 3 1 Paper Loading Problems 3 2 Original Jams 4 Software Setting Problems Paper jam occurs Transmission and reception of fax can not be done 7 Troubleshooting of Telephone Fax Functions Other defect 5 Malfunctions The machine does not print The machine does not work The machine does not load paper The control panel does not work 6 Troubleshooting of the Control Panel 10 Network Proble...

Page 182: ...paper Check Paper Size When you see this error the paper in the paper tray does not match the paper size you set in Menu button 1 key and 3 key Either load the appropriate size paper or change the default setting Comm Error Poor phone line quality caused communication error Try the call again If problem continues call Telephone Company to check your phone line Connection Fail You tried to poll a f...

Page 183: ...at is not programmed Set up the One Touch or Speed Dial number PLS Open Cover A page piece of paper or paper clip etc may be jammed inside the machine Open the front cover If you see any jammed paper or other item gently pull it out then close the front cover If the error message remains open and close the front cover again If the machine cannot reset itself and return to the date and time prompt ...

Page 184: ... 100 C within 15 sec Thermistor ASSY Halogen lamp 6C Heater temperature exceeds the maximum high temperature 270 C or more is detected for 1 sec Thermistor ASSY Power supply PCB 6D Heater temperature lowers the minimum low temperature 60 C or less is detected for 1 sec Thermistor ASSY Power supply PCB 6E Heater temperature does not go up enough Slower temperature rise rate than 2 C 5 sec is detect...

Page 185: ...ation sensor actuator Main PCB 85 No paper tray loaded Paper tray 86 No 2nd paper tray loaded Paper tray 87 Main motor stop position error Main motor 88 Paper jam Paper eject sensor remaining OFF even after regist sensor is turned OFF Registration sensor actuator Main PCB A1 Main cover opened Main PCB Scanner unit A2 Document too long to scan A3 Document not detected by the document rear sensor Do...

Page 186: ...CB Black markings on the white level reference film inside the scanner top cover B5 Not used Horizontal scanning edge reduction detection error in scanning area setting B6 Not used Horizontal scanning edge enlargement detection error in scanning area setting B7 A D converter standard voltage failure at High side B8 A D converter standard voltage failure at Low side B9 Scanning light source failure...

Page 187: ... Data scanning error during transmission EA Document removed at phase B CIS Main PCB F5 EOL not found during page memory transfer Replace the main PCB if this error occurs frequently F6 PC interface error Interface cable Main PCB FA Not used Scanner motor error detected Scanner motor FF Memory management error Replace the main PCB if this error occurs frequently ...

Page 188: ...ware must be set up correctly to print on the envelope size you are using This is usually done in the page setup or document setup menu of your software Please see your software application manual A paper jam has occurred Clear the jammed paper Please refer to QSG The machine does not print into the top output tray Close the back output tray The machine does not feed paper from the lower tray prop...

Page 189: ...he ADF Automatic document feeder 1 Open the control panel cover 2 Pull the jammed document to the front and remove it 3 Close the control panel cover and press Stop Exit button Fig 6 1 3 3 Paper Jams 3 3 1 Clearing jammed paper Clear the jammed paper following the procedures below 1 Pull the paper tray completely out of the machine 2 Pull the jammed paper up and out of the machine Fig 6 2 ...

Page 190: ...it 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 Fig 6 3 CAUTION To prevent damage to the machine caused by static electricity do not touch the electrodes shown in Figure 6 4 Fig 6 4 ...

Page 191: ... fuser may get dirty with toner powder and it may scatter on the next printouts Print a few copies of the test page until the scattering of toner stops CAUTION After you have just used the machine some internal parts of the machine are extremely hot Wait for the machine to cool down before you touch the internal parts of the machine Fig 6 6 6 Release the jam clear cover and take out the jammed pap...

Page 192: ...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 6 8 9 Install the toner cartridge on the drum unit and then install the drum unit on the machine 10 Put the paper tray in the machine 11 Close the front cover ...

Page 193: ...am caused by paper length detected as shorter than 80mm The front regist sensor was turned off early Malfunction of actuator or hardware noise Check the front regist sensor referring to 3 9 Sensor OperationaI Check in Chapter 7 Top of paper stopped between the paper feed roller and the pick up roller Jam caused by a paper feed delay Paper was not fed in at the proper timing due to paper dust or we...

Page 194: ...cifications 3 Try printing using the straight through output path 4 Turn over the stack of paper in the cassette or try rotating the paper 180 in the cassette Possible cause Step Check Result Remedy Paper 1 Is the problem solved if new paper is used Yes Instruct the user how to store paper so that it does not absorb moisture Fixing unit entrance guide 2 Is the entrance guide dirty Yes Clean the en...

Page 195: ...aper 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 Also try rotating the paper 180 in the paper tray 3 Try printing using the straight through output path NOTE For no paper supplied as the cause of a malfunction see M 4 No paper supplied in 6 MALFUNCTIONS in this Chapter ...

Page 196: ...t as an ECP port change it to a normal port 6 Try resetting the factory settings Possible cause Step Check Result Remedy Main PCB failure 1 Is it possible to print with another PC and printer cable No Replace the main PCB Yes This problem may appear under the specified system environment Check the environment which the user used S 3 Although the USB driver is installed it is unable to find the BRU...

Page 197: ...sions Folder of System Folder No Try to re install the printer driver For System 8 6 or higher BR_PrintMoniter USB Brother Laser Yes Turn off the machine and PC power switch and check all connections between them Then turn them on again S 4 This machine does not appear in Chooser with iMac and Power Macintosh G3 G4 with USB User Check 1 Check the machine is turned on 2 Check the USB interface cabl...

Page 198: ...power supply and the power plug Yes Replace the AC power cord M 2 No DC power supplied Possible cause Step Check Result Remedy AC power supply 1 Is AC power supplied between connectors CN1 L and CN1 N when the power plug is plugged into the outlet No Follow the same check procedure of M 1 No AC power supplied Wiring DC load 2 Turn on the power switch Measure the voltages between the terminals Do t...

Page 199: ... solenoid connector on the engine PCB good No Reconnect the connector Engine PCB circuit 3 Set paper in the manual feed tray and make a test print by pressing the control panel button No Replace the engine PCB Paper pick up clutch solenoid Does the voltage between pins 2 solenoid and 1 24V of the CN16 connector on the engine PCB change from approx 24V DC to 0V within the specified time Yes Replace...

Page 200: ... Reconnect the connector securely Yes Replace the laser unit Harness connection failure 2 2 Is the polygon motor connector on the engine PCB secured correctly No Reconnect the connector securely Yes Replace the laser unit M 9 Fixing Unit failure Possible cause Step Check Result Remedy Poor thermistor harness contact 1 Is the contact of connector CN7 on the engine PCB good No Reconnect the connecto...

Page 201: ...em environment M 12 Engine PCB failure Possible cause Step Check Result Remedy Fixing unit ground wire connection 1 Is the ground wire on the fixing unit secured with the shoulder screw correctly No Secure the ground wire correctly with the shoulder screw Harness connection failure 2 Is the connection of the connector between the main PCB and the engine PCB connected correctly No Reconnect the con...

Page 202: ...r supply PCB 3 Main PCB and low voltage power supply PCB are properly connected No Fix the connection properly Harness between main PCB and low voltage power supply PCB 4 Harness wire is damaged Yes Replace the harness with a normal part LCD 5 Replacement of LCD solves the problem Yes Replace the LCD with a normal part Control panel PCB 6 Replacement of control panel PCB solves the problem Yes Rep...

Page 203: ...l PCB 6 Replacement of control panel PCB solves the problem Yes Replace the control panel PCB with a normal part Main PCB 7 Replacement of main PCB solves the problem Yes Replace the main PCB with a normal part L 3 Printing from Macintosh applications fails User Check 1 Verify that the printer driver supplied with the printer has been installed in the system folder and selected in the selector 2 C...

Page 204: ...B 3 Harness wire is damaged Yes Replace the harness with a normal part Connection between main PCB and control panel PCB 4 Main PCB and control panel PCB are properly connected No Fix the connection properly Harness between main PCB and control panel PCB 5 Harness wire is damaged Yes Replace the harness with a normal part Connection of FPC key 6 FPC key is properly connected No Fix the connection ...

Page 205: ...x the connection properly Harness between main PCB and control panel PCB 6 Harness wire is damaged Yes Replace the harness with a normal part Connection of FPC key 7 FPC key is properly connected No Fix the connection properly FPC key 8 Replacement of FPC key solves the problem Yes Replace the FPC key with a normal part NCU PCB 9 Replacement of NCU PCB solves the problem Yes Replace the NCU PCB wi...

Page 206: ... and scanner unit 4 Harness wire is damaged Yes Replace the harness with a normal part Connection between main PCB and NCU PCB 5 Main PCB and NCU PCB are properly connected No Fix the connection properly Harness between main PCB and NCU PCB 6 Harness wire is damaged Yes Replace the harness with a normal part Speaker 7 Replacement of speaker solves the problem Yes Replace the speaker with a normal ...

Page 207: ... No Fix the connection properly Harness between main PCB and control panel PCB 6 Harness wire is damaged Yes Replace the harness with a normal part NCU PCB 7 Replacement of NCU PCB solves the problem Yes Replace the NCU PCB with a normal part Main PCB 8 Replacement of main PCB solves the problem Yes Replace the main PCB with a normal part F 6 Dialing function does not switch between tone and pulse...

Page 208: ...are properly connected No Fix the connection properly Harness between main PCB and NCU PCB 2 Harness wire is damaged Yes Replace the harness with a normal part NCU PCB 3 Replacement of NCU PCB solves the problem Yes Replace the NCU PCB with a normal part Main PCB 4 Replacement of main PCB solves the problem Yes Replace the main PCB with a normal part ...

Page 209: ... t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o u t t e s t p r i n t o u t t e s t P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o u t t e s t p r i n t o u t t e s t P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o u t t e s t p r i n t o u t t e s t P r i n t o u t t e s t p r i n t o P r i n t o...

Page 210: ...toner cartridge is replaced with a full one Yes The wiper of the toner cartridge is defective Replace the toner cartridge Drum connection failure 3 Are all the contacts between the drum unit and machine connected correctly No Clean contact electrodes both on the drum unit and in the machine 1 4 5 6 High voltage power supply PCB failure 4 Is the harness connection between the high voltage power sup...

Page 211: ...one High voltage power supply PCB failure 4 Is the connections of the connector between the high voltage power supply PCB and the engine PCB secured correctly Yes Replace the high voltage power supply PCB Main PCB failure 5 Are there any disconnected connectors No Replace the main PCB Engine PCB failure 6 Are there any disconnected connectors No Replace the engine PCB User Check 1 Check the paper ...

Page 212: ...rum unit Toner cartridge failure 4 Is the problem solved after replacing the toner cartridge Yes Replace the toner cartridge with a new one Scanner harness connection failure 5 Is the scanner harness connected securely Check if there is any play in the connection No Reconnect the connector correctly Main PCB failure 6 Are printing signals being input to the laser unit Is the problem solved after r...

Page 213: ...ion 4 Is the laser unit connected to the main PCB correctly No Connect the harness between the laser unit and the main PCB correctly High voltage power supply PCB failure 5 Is the problem solved after replacing the high voltage power supply PCB Yes Replace the high voltage power supply PCB Main PCB failure 6 Is the problem solved after replacing the main PCB Yes Replace the main PCB CIS unit 7 Is ...

Page 214: ...he problem solved after replacing the drum unit Yes Replace the drum unit No Replace the high voltage power supply PCB NOTE This problem may disappear after printing approximately 5 pages of completely blank sheets How to clean the pressure roller Clean the pressure roller as follows 1 Set ten or more sheets of paper in the paper tray 2 Check the absence of paper in the ADF and the paper tray 3 Pr...

Page 215: ...e drum surface scratched Yes Replace the drum unit Dirt on the drum 7 Is the drum surface dirty with toner in streaks Yes Replace the drum unit Scratch on the heat roller 8 Is the surface of the heat roller scratched Yes Replace the fixing unit NOTE If you print the same pattern especially vertical streaks continuously electrostatic charge performance of the drum will decrease temporarily and blac...

Page 216: ...es 4 Are the charge electrodes between the machine and the drum unit dirty Yes Clean both electrodes 3 High voltage power supply PCB failure 5 Is the problem solved after replacing the high voltage power supply PCB Yes Replace the high voltage power supply PCB I 8 Black vertical streaks in a gray background Possible cause Step Check Result Remedy Ground contacts Translucent stain on the scanner wi...

Page 217: ...tacts between the machine and toner cartridge dirty Yes Clean the electrodes at both sides 4 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 4 Damp wet paper might be used Try to change to freshly unpacked paper User...

Page 218: ...rom the correct position Yes Reposition the sensor to the correct position I 12 Poor fixing Possible cause Step Check Result Remedy Paper 1 Is thick paper of more than 158 g m2 being used Yes Recommend to use the specified types of paper Toner sensor failure 2 Is the problem solved by replacing the drum unit or the toner cartridge Yes 1 If toner is out replace the toner cartridge 2 The toner senso...

Page 219: ...t t e s t p r i n t o P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o u t t e s t p r i n t o u t t e s t P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o u t t e s t p r i n t o u t t e s t P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o u t t e s t p r i ...

Page 220: ...cartridge almost empty Yes Replace the toner cartridge with a new one Paper 4 Is the problem solved after changing to specified freshly unpacked paper Yes Damp wet paper might be used Recommend to change freshly unpacked paper Environment 5 Does the problem still appear after the machine has warmed up Yes 1 Replace the drum unit 2 Advise the user of the specified print environment User Check 1 If ...

Page 221: ...e looking at the surface of the photosensitive drum Fig 6 11 3 Wipe the surface of the photosensitive drum with a cotton swab until the dust or paper powder on the surface comes off Fig 6 12 CAUTION Do not wipe the surface of the photosensitive drum with something sharp ball point pen etc Use cleaning liquid which is a 50 50 mixture of ethyl alcohol and pure water Position of smudge on the drum 94...

Page 222: ... No Clean contact electrode both on the drum unit and in the machine 8 Fixing unit failure 3 Are the spots at 79mm intervals The problem is not solved after printing a few pages Yes 1 Check and clean the heat roller with a cloth dampened with alcohol 2 Replace the fixing unit High voltage power supply PCB failure 4 Is the problem solved after replacing the high voltage power supply PCB Yes Replace...

Page 223: ...medy Ground contacts Corona wire failure 1 Is the wire cleaner at its home position No Return the wire cleaner to its home position 2 Dirt on the corona wire 2 Is the corona wire dirty Yes 1 Clean the corona wire 2 If the problem still appears after cleaning replace the drum unit 2 ...

Page 224: ...cartridge Be sure to close the cover after removing the drum unit and toner cartridge Yes Toner sensor failure Clean the toner sensor and check the toner sensor connection Toner cartridge failure 3 Is the problem solved after replacing the toner cartridge Yes Replace the toner cartridge Drum unit failure 4 Is the problem solved after replacing the drum unit Yes Replace the drum unit No Replace the...

Page 225: ...rtridge failure 1 Is the problem solved after replacing the toner cartridge Yes Replace the toner cartridge High voltage power supply PCB failure 2 Is the problem solved after replacing the high voltage power supply PCB Yes Replace the high voltage power supply PCB User Check 1 Check the paper used meets the recommended paper specifications 2 Select the Thick paper mode in the printer driver or us...

Page 226: ...ause Step Check Result Remedy Ground contact Drum unit failure 1 Is the problem solved after replacing the drum unit Yes Replace the drum unit Drum unit connection failure 2 Is the contact between the drum unit and machine connected correctly No Clean contact electrode both on the drum unit and in the machine 8 High voltage power supply PCB failure 3 Is the problem solved after replacing the high ...

Page 227: ...s Replace the high voltage power supply PCB I 24 Toner specks 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 3 Check that the appropriate media type is selected in the printer driver 4 Try installing...

Page 228: ...from the AC power outlet and leave the machine for a few minutes Then wipe the electrodes above carefully with a dry lint free cloth Be careful not to change the shapes of the electrodes Drum Unit Paper Tray 2 Wire cleaner 3 Charge 1 Photosensitive drum 7 Ground 5 Grid 5 Grid 3 Charge 1 Photosensitive drum 6 Transfer roller 6 Transfer roller 4 Development roller 4 Development roller 8 Cleaner 8 Cl...

Page 229: ...d try again 4 Check that the appropriate printer driver is selected as Set as Default Check also that the correct print port is set for the selected printer driver 5 Check that the machine is not connected to the same port which is also connected to a mass storage device or scanner Remove all other devices and connect the port to the machine only Turn off the printer status monitor in the device o...

Page 230: ...d then check the memory size in Print Settings Yes Replace the main PCB Is it possible to print the data No Replace the DIMM P 3 Headers or footers are not printed out even though they are viewed on PC screen User Check Most laser machines have a restricted area that cannot be printed on Usually the first two lines and last two lines of text cannot print leaving 62 printable lines Adjust the top a...

Page 231: ...at in some instances it can take up to two minutes for the print fax server to load its IP address after setting the IP address If a successful response is received then proceed to the UNIX TCP IP Windows NT LAN Server Windows 98 95 Me Peer to Peer LPR Internet Printing or Web Browser troubleshooting section Otherwise proceed to step 3 and then go to subsection 10 3 TCP IP Troubleshooting b If you...

Page 232: ... or multi port repeater 5 If you have a bridge or router located between the print fax server and host computer make sure that the device is set up to allow the print fax server to send and receive data from the host For example a bridge can be set up to only allow certain types of Ethernet addresses to pass through a process known as filtering therefore such a bridge must be configured to allow B...

Page 233: ...y in the etc bootptab file is correctly configured 5 Also verify that host computer and the print fax server are either on the same subnet otherwise that the router is properly configured to pass data between the two devices 10 4 UNIX Troubleshooting 1 Make sure that the etc printcap file if applicable is typed in correctly In particular look for missing and characters because a small error anywhe...

Page 234: ...x server in the Name or address of server providing lpd box 10 6 Windows 95 98 Me Peer to Peer Print LPR Troubleshooting If you are having trouble printing on a Windows 95 98 Me Peer to Peer network LPR method check the following 1 Make sure that the Brother LPR Port driver is correctly installed and configured according to the Windows 95 98 Me Peer to Peer chapters 2 Try to turn the Byte Count on...

Page 235: ...are having problems printing large files the problem may be in the e mail system Some e mail systems have difficulties printing large files If the file does not reach its destination intact then the problem is with the E mail system 3 You can also enable the partial e mail print facility on your client PC this will split the e mail up into fragments which should then not overwhelm your e mail serv...

Page 236: ...ng a web browser or the BRAdmin Professional utility and in the file server using the PCONSOLE Print Fax Server Information Change Password command 2 If you created the print queue using PCONSOLE and instead of BRAdmin Professional utility make sure that you have enabled at least one NetWare file server using the SET NETWARE SERVER servername ENABLED command 3 Have you exceeded your NetWare user l...

Page 237: ...alk zone Because the print fax server gets its zone information from router broadcasts it may not be in the zone you expect and will therefore not show up in the Chooser If this is the case you may need to force the zone name using BRAdmin Professional utility a web browser 10 13 DLC LLC Troubleshooting If you are having trouble printing with DLC LLC check the following 1 Make sure that the DLC LL...

Page 238: ...ocuments that will be accepted by the mail server Ex A 42 page document of the CCITT 1 test chart is approximately 1Mbyte in size 6 If you do not receive e mail check the Auto Polling setting and Polling frequency 7 If you cannot retrieve mail from the mail server check the setting for the POP3 server and Mailbox name Check that the POP3 password is entered correctly This setting is case sensitive...

Page 239: ... select one of the maintenance mode functions listed in Section 2 enter the corresponding 2 digit function code with the numerical keys on the control panel The details of each maintenance mode function are described in Section 3 NOTE Pressing the 9 key twice in the initial stage of the maintenance mode makes the machine exit from the maintenance mode restoring it to the standby state Pressing the...

Page 240: ... PCB 3 7 7 13 14 15 16 Receiver Volume Adjustment 3 8 7 14 32 Sensor Operational Check 3 9 7 15 53 Received Data Transfer Function 3 10 7 17 54 Fine Adjustment of Scan Start End Positions 3 11 7 19 55 CIS Scanner Area Setting 3 12 7 20 67 Paper Feed and Paper Eject Test 3 13 7 21 74 EEPROM Customizing 3 14 7 22 80 Display of the Equipment s Log Information 3 15 7 23 82 Machine Error Code Indicatio...

Page 241: ...ou may allow them to access user accessible selectors which are shaded in the firmware switch tables in Appendix 3 The service personnel should instruct end users to follow the procedure given below 1 Press the Menu and Enlarge Reduce button in this order NOTE The Enlarge Reduce button does not work when the machine is in the retry mode or the timer function is set 2 Press the 0 key 3 Enter the de...

Page 242: ...r Telephone function registration One touch dialing Speed dialing Group dialing All of these will be initialized These will not be initialized NOTE If you replace the main PCB with one used for any other machine carry out this procedure and then customize the EEPROM maintenance mode function code 74 in Subsection 3 14 Operating Procedure 1 Press the 0 and 1 keys or the 9 and 1 keys according to yo...

Page 243: ...ompensation reference data 1 Press the 0 and 5 keys in this order in the initial stage of the maintenance mode The WHITE LEVEL 1 will appear on the LCD 2 The equipment prints out the scanning compensation data list containing the following a Dark output adjustment value 1Byte b Bright output adjustment value 1Byte c Light source adjustment value 1Byte d Black level MIN data 1Byte e Black level MAX...

Page 244: ...CHAPTER 7 MAINTENANCE MODE 7 6 Fig 7 2 a b c d e f g h i j ...

Page 245: ...mance Operating Procedure 1 Set documents Allowable up to the ADF capacity The DOC READY will appear on the LCD 2 Press the 0 and 8 keys in this order While counting the documents the machine feeds them in and out displaying the current count on the LCD as shown below ADF CHECK P 01 Current count 1st page in this example 3 To return the machine to the initial stage of the maintenance mode press th...

Page 246: ...tion 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 The figure below shows test pattern 1 Fig 7 3 ...

Page 247: ...3 PABX mode setting WSW04 TRANSFER facility setting WSW05 1st dial tone and busy tone detection WSW06 Pause button setting and 2nd dial tone detection WSW07 Dial tone setting 1 WSW08 Dial tone setting 2 WSW09 Protocol definition 1 WSW10 Protocol definition 2 WSW11 Busy tone setting WSW12 Signal detection condition setting WSW13 Modem setting WSW14 AUTO ANS facility setting WSW15 REDIAL facility se...

Page 248: ...0 0 3 Use the left arrow and right arrow keys to move the cursor to the selector position to be modified 4 Enter a value to be set 0 or 1 using the 0 and 1 keys 5 Press the Set button This operation saves the newly entered selector values onto the EEPROM and readies the machine for accepting a firmware switch number 6 Repeat steps 2 through 5 until the modification for the desired firmware switche...

Page 249: ...ntents specified by the firmware switches Operating Procedure 1 Press the 1 key twice in the initial stage of the maintenance mode The PRINTING will appear on the LCD 2 The machine prints out the configuration list as shown in the figure below 3 Upon completion of printing the machine returns to the initial stage of the maintenance mode Fig 7 4 ...

Page 250: ... stage of the maintenance mode The LCD shows 2 Press the Start button Each time you press the Start button the LCD cycles through the displays shown at right The Status lamp also changes from orange red to green each time you press the Start button 3 Press the Stop Exit button in any process of the above display cycle The machine beeps for one second and returns to the initial stage of the mainten...

Page 251: ...t the displayed number is correct by referring to the illustration below If a key or button is pressed out of order the machine beeps and displays the INVALID OPERATE on the LCD To return to the status ready to accept key button entry for operational check press the Stop Exit button 3 After the last number key or button is pressed the machine beeps for one second and returns to the initial stage o...

Page 252: ... displayed on the LCD as shown below Fig 7 7 4 If the volume level displayed on the LCD is the one shown below change the setting to the one the default setting HIGH as shown in the above 3 by using the up arrow key and the down arrow key Fig 7 8 Fig 7 9 5 Press the Start button The machine enters the handset volume adjustment mode and the PWM duty ratio is displayed at the right side of the LCD 6...

Page 253: ... High Medium Low OFF Fig 7 10 If the sensing status are as listed below the LCD will show the following DFDRCVHK and TNMNRSCSP1P2C2R2 PU PO which can be switched by pressing the Start button for machines Given below is the relationship between the LCD indication sensor names and sensor status LCD Sensors Sensing status DF Document front sensor No document detected DR Document rear sensor No docume...

Page 254: ...pen 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 3 Press the Stop Exit button The machine beeps for one second and return to the initial stage of the maintenance mode NOTE If you have opened and closed the front cover during the above procedure you need to open and close the front cover ...

Page 255: ...eceived documents The 1 NO OF JOBS will appear Press the Set button and then the number of received documents is displayed e g NO OF JOBS 10 3 Press the 2 key to transmit an activity report The 2 ACTIVITY will appear Press the 3 key to transfer received data It is transferred with an activity report attached The 3 DOCUMENTS will appear If no received data exists NO DOCUMENT will appear 4 Press the...

Page 256: ...M information ROM information Serial number Fig 7 11 Example of the end page FAX TRANSFER END PAGE JOB NO TOTAL PAGE S NAME FAX TEL 001 001 BROTHER 052 824 2330 052 824 2846 MACHINE STATUS 1 A1 MACHINE STATUS 2 A3 MACHINE STATUS 3 AA MACHINE STATUS 4 A1 MACHINE STATUS 5 84 MACHINE STATUS 6 A1 MACHINE STATUS 7 00 MACHINE STATUS 8 00 MACHINE STATUS 9 00 Job No of the transfer setting Total number of...

Page 257: ...els can be adjusted in 11 steps from 5 to 5 mm 3 Press the left arrow key to increase compensation levels and the right arrow key to lower them Press the Stop Exit button and the machine returns to the initial state of the maintenance mode without adjusting compensation levels 4 Press the Set button The ACCEPTED will appear on the LCD One second later the machine returns to the initial stage of th...

Page 258: ... value in the EEPROM Operating Procedure 1 In the initial stage of the maintenance mode press the 5 key twice and SCANNER AREA SET is displayed on the LCD display 2 Store the magnification correction setting value in the EEPROM and the machine returns to the initial stage of the maintenance mode Right arrow key Left arrow key Set button Right arrow key Left arrow key Stop Exit button Stop Exit but...

Page 259: ...splayed on the LCD then paper feed and paper eject test starts Grids as shown in the next page are printed on paper 4 Press the Stop Exit button and the paper feed and paper eject test is cancelled then the machine returns to the initial stage of the maintenance mode Hint The paper feed and paper eject test continues until paper loaded in the tray runs out unless the STOP Exit button is pressed Wh...

Page 260: ... mode The current customizing code e g 9001 in the case of MFC8220 U S A version appears 2 Enter the desired customizing code e g 9001 in the case of MFC8220 U S A version The newly entered code appears NOTE The machine does not work properly when an incorrect code is entered 3 Press the Start button The machine saves the setting and appears the PARAMETER INIT on the LCD The machine returns to the...

Page 261: ...w many times toner replacement has been made 7 Copy page count indicating how many copies have been made 8 PC print page count indicating how many pages the equipment has been printed as an output device of the connected PC 9 FAX page count indicating how many received FAX pages have been printed 10 Error code of the most recent machine error 1 11 Error code of the most recent communications error...

Page 262: ...ts picked up LG A4L Number of Legal A4 Long size sheets picked up B5 EXE Number of B5 Executive size sheets picked up ENVLOP Number of envelopes picked up OTHER Number of other size sheets picked up DRUM Drum counter COVERAGE Average black coverage DRUM_CH Number of times the drum has been replaced DATE Last date when the drum was replaced TNER_CH Number of times the toner cartridge has been repla...

Page 263: ... line It allows the service personnel to receive the transmission log of the user s machine at a remote location and use it for analyzing problems arising in the user s machine Operating Procedure 1 If the user s machine has a transmission related problem call the user s machine at a remote location from your machine 2 If the line is connected have the user perform the following 1 Hook up to the e...

Page 264: ...mory security mode so as not to exit from the memory security mode NOTE Carrying out this procedure will lose passwords previously entered but retain FAX messages received in the memory security mode Operating Procedure 1 When the SECURE MODE is displayed on the LCD hold down the Menu button and press the key Within two seconds start to press the 2 7 9 0 and 0 keys The memory security mode will be...

Page 265: ...ode e g 9001 in the case of MFC8220 U S A version appears 3 Enter the desired customizing code e g 9001 in the case of MFC8220 U S A version The newly entered code appears NOTE The machine does not work properly when an incorrect code is entered 4 Press the Start button The machine saves the setting and returns to the initial stage of the maintenance mode If you press the Stop Exit button or no ke...

Page 266: ...off 2 Make sure that the power cord of the machine is unplugged from a wall socket or other power source 3 Connect the parallel interface cable to the parallel port on the back of the machine and secure it with the lock wires 4 Connect the other end of the interface cable to the printer port of your PC and secure it with the two screws 1 2 Setting up the Machine and Your PC 1 Plug the power cord o...

Page 267: ...ownloading the machine beeps intermittently Upon completion of the downloading the machine beeps continuously NOTE If the machine cannot return to the standby state after completion of downloading turn the power off and on On a PC running Windows 98 Me 2000 1 Install the printer driver for the parallel port to your PC Once installed no more printer driver is required for your PC 2 Copy the update ...

Page 268: ...se 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 2 1 Connecting the Machine to Your PC See the illustration on page A 2 1 Make sure that your PC is turned off 2 Make sure that the power cord of the machine is unplugged from a wall socket or other power source 3 Connect the par...

Page 269: ...ss the OK button The setup utility will transmit the ID code data from your PC to the machine and then it will terminate The machine will automatically return to the standby mode 3 To check whether the entered character string ID code is correct make the machine then press the 8 key and 0 key in this order refer to CHAPTER 7 Subsection 3 15 The USB serial number appears on the LCD 4 Check that the...

Page 270: ...verseas communications mode setting A 26 WSW21 TAD setting 1 A 27 WSW22 ECM setting A 27 WSW23 Communications setting A 28 WSW24 TAD setting 2 A 29 WSW25 TAD setting 3 A 29 WSW26 Function setting 4 A 30 WSW27 Function setting 5 A 31 WSW28 Function setting 6 A 32 WSW29 Function setting 7 A 33 WSW30 Function setting 8 A 33 WSW31 Function setting 9 A 34 WSW32 Function setting 10 A 35 WSW33 Function s...

Page 271: ...t dialing mode pulse DP or tone PB dialing 0 PB 1 DP l Selectors 1 and 2 Dial pulse generation mode These selectors set the number of pulses to be generated in pulse dialing N Dialing N generates N pulses Dialing 0 generates 10 pulses N 1 Dialing N generates N 1 pulses 10 N Dialing N generates 10 N pulses l Selectors 3 and 4 Break time length in pulse dialing These selectors set the break time len...

Page 272: ...ne signal transmission time length No 1 2 0 0 70 ms 0 1 80 ms 1 0 90 ms 1 1 100 ms 3 4 Min pause in tone dialing No 3 4 0 0 70 ms 0 1 80 ms 1 0 90 ms 1 1 140 ms 5 8 Attenuator for pseudo ring backtone to the line selectable in the range of 0 15 dB 0 0 dB 1 8 dB 0 0 dB 1 4 dB 0 0 dB 1 2 dB 0 0 dB 1 1 dB l Selectors 1 through 4 Tone signal transmission time length and Min pause in tone dialing These...

Page 273: ...ring a modular wall socket with the machine Upon detection of CNG signals by the number of cycles specified by these selectors the machine interprets CNG as an effective signal and then starts FAX reception Selector No 1 No 5 Cycle 0 A 0 A 0 A 1 B 1 B 0 A 1 B 1 B 0 5 cycle 1 0 cycle 1 5 cycles 2 0 cycles WSW04 TRANSFER facility setting Selector No Function Setting and Specifications 1 6 Not used 7...

Page 274: ...e 1st dial tone detection function which detects the 1st dial tone issued from the PSTN when a line is connected to the PSTN Setting all of these selectors to 1 activates the dial tone detection function so that the machine starts dialing upon detection of a dial tone when a line is connected For the detecting conditions of the 1st dial tone refer to WSW07 and WSW08 Other setting combinations deac...

Page 275: ... in automatic receiving mode This selector determines whether or not the machine automatically disconnects a line upon detection of a busy tone in automatic receiving mode WSW06 Pause button setting and 2nd dial tone detection Selector No Function Setting and Specifications 1 3 Pause button setting and 2nd dial tone detection No 1 2 3 0 0 0 No pause 0 0 1 3 5 sec WAIT 0 1 0 7 sec WAIT 0 1 1 10 5 s...

Page 276: ...s line After that the machine will insert a WAIT of 3 5 seconds If no 2nd dial tone is received within the specified time length set by WSW08 the machine will disconnect the line if in automatic dialing or it will start transmitting the dial signal if given after depression of the Pause button in hook up dialing l Selectors 4 through 6 Detection of 2nd dial tone Upon detection of the 2nd dial tone...

Page 277: ...rough 7 are not applicable in those countries where no dial tone or line current detection is supported e g U S A l Selectors 1 and 2 Frequency band range These selectors set the frequency band for the 1st dial tone and the busy tone before dialing to be detected This setting is effective only when selectors 1 through 3 of WSW05 are set to 1 1 1 l Selectors 4 through 6 2nd dial tone detection leve...

Page 278: ...Bm 1 0 0 33 dBm 1 0 1 36 dBm 1 1 0 39 dBm 1 1 1 42 dBm NOTE The WSW08 is not applicable in those countries where no dial tone detection is supported e g U S A l Selectors 1 through 3 1st dial tone detection time length Upon detection of the 1st dial tone for the time length set by these selectors the machine starts dialing This setting is effective only when selectors 1 through 3 of WSW05 are set ...

Page 279: ...ssage into 64 octet frames Remarks The error correction mode ECM is a facsimile transmission manner in which the machine divides a message into frames for transmission so that if any data error occurs on the transmission line the machine retransmits only those frames containing the error data l Selector 2 Use of non standard commands If this selector is set to 0 the machine may use non standard co...

Page 280: ...t dial digit to CML ON This selector sets the time length from when the machine transmits the last dial digit until the CML relay comes on l Selector 3 Time length from CML ON to CNG transmission This selector sets the time length until the machine transmits a CNG after it turns on the CML relay l Selector 4 Time length from CML ON to CED transmission This selector sets the time length until the m...

Page 281: ...is not applicable in those countries where no busy tone detection is supported The setting of WSW11 is effective only when selectors 5 and 6 of WSW05 are set to 0 1 or 1 1 Busy tone detection l Selectors 1 and 2 Frequency band range These selectors set the frequency band for busy tone to be detected l Selectors 3 through 8 ON OFF time length ranges These selectors set the ON and OFF time length ra...

Page 282: ...ors 1 through 4 Min and max OFF time length of calling signal Ci If the machine detects the OFF state of calling signal Ci for a time length which is greater than the value set by selectors 1 and 2 and less than the value set by selectors 3 and 4 it interprets the Ci signal as OFF l Selectors 5 and 6 Detecting time setting These selectors set the time length required to make the machine acknowledg...

Page 283: ...s of analogue signals on a line Attenuation in the high band frequency is greater than in the low band frequency Set these selectors according to the distance from the telephone switchboard to the machine l Selectors 3 and 4 Reception level These selectors set the optimum receive signal level l Selectors 5 through 8 Modem attenuator These selectors are used to adjust the transmitting level of the ...

Page 284: ...times 1 0 0 1 2 to 4 times 1 0 1 0 2 to 5 times 1 0 1 1 2 to 6 times 1 1 0 0 1 to 10 times 1 1 0 1 2 to 10 times 1 1 1 0 3 to 5 times 1 1 1 1 4 to 10 times l Selectors 1 through 4 Frequency band selection These selectors are used to select the frequency band of calling signals for activating the AUTO ANS facility In the French versions if the user sets the PBX to OFF from the control panel the set...

Page 285: ...ls by the number of times set by selectors 3 through 6 at intervals set by selectors 1 and 2 This setting is effective only when selector 7 is set to 0 l Selectors 7 Redialing for no response sent from the called terminal This selector determines whether or not the machine redials if no G3 command response comes from the called station after dialing within the time length set by selectors 7 and 8 ...

Page 286: ...z Selector 2 CCITT superfine recommendation If this selector is set to 1 the machine communicates in CCITT recommended superfine mode 15 4 lines mm If it is set to 0 it communicates in native superfine mode z Selector 7 Max document length limitation This selector is used to select the maximum length of a document to be sent z Selector 8 Stop key pressed during reception If this selector is set to...

Page 287: ...e alarm function which sounds an alarm when the handset is off the hook after the communication is completed The off hook alarm works also for an external telephone connected to the EXT modular socket z Selector 5 Calendar clock type If this selector is set to 0 USA the MM DD YY hh mm format applies if it is set to 1 Europe the DD MM YY hh mm format applies DD is the day MM is the month YY is the ...

Page 288: ...hase B at the calling station only 1 1 All transmission phases both at the calling and called stations l Selectors 2 and 3 Detection enabled time for CNG and no tone After the line is connected via the machine or the external telephone the machine can detect a CNG signal or no tone for the time length specified by these selectors The setting specified by these selectors becomes effective only when...

Page 289: ...e machine attempts to establish the transmission link via the modem If the establishment fails the machine automatically steps down to the next highest speed and attempts to establish the transmission link again The machine repeats this sequence while stepping down the transmission speed to the last choice specified by selectors 4 through 6 If the modem always falls back to a low transmission spee...

Page 290: ...e selectors should be used if the machine malfunctions in overseas communications According to the communications error state select the signal specifications Setting selector 2 to 1 allows the machine to use 1100 Hz CED signal instead of 2100 Hz in receiving operation This prevents malfunctions resulting from echoes since the 1100 Hz signal does not disable the echo suppressor ES while the 2100 H...

Page 291: ... ECM in sending 0 ON 1 OFF 2 ECM in receiving 0 ON 1 OFF 3 Call Waiting Caller ID 0 ON 1 OFF 4 8 Not used ECM Error correction mode NOTE Selector 3 is applicable to the American version only but not applicable to those models equipped with high speed modem Selectors 5 through 8 are applicable to the Asian version only l Selector 3 Call Waiting Caller ID Setting this selector to 0 allows the user t...

Page 292: ...ries of zeros is detected If it is set to 1 the called station starts counting zeros upon detection of 10 ms successive zeros 50 ms after the head of a series of zeros is detected In this case if the detection of 10 ms successive zeros is too late the data counting period will become less than 1 0 second making the called station judge the line condition unacceptable l Selectors 2 and 3 Allowable ...

Page 293: ...ese selectors set the length of time from CML ON up to the start of pseudo ring backtone transmission WSW25 TAD setting 3 Selector No Function Setting and Specifications 1 4 Not used 5 7 Pause between paging number and PIN No 5 6 7 0 0 0 2 sec 0 0 1 4 sec 0 1 0 6 sec 0 1 1 8 sec 1 0 0 10 sec 1 0 1 12 sec 1 1 0 14 sec 1 1 1 16 sec 8 Not used l Selectors 5 through 7 Pause between paging number and P...

Page 294: ...nsmission If this selector is set to 0 the machine waits for document reading into the memory to complete and then starts dialing This enables the machine to list the total number of pages in the header of the facsimile message l Selectors 4 and 5 No of CNG cycles to be detected when the line is connected via the external telephone except in the external TAD mode The machine interprets a CNG as an...

Page 295: ...versions having a TEL key Selector 4 is applicable only to the U S A versions l Selector 2 Ringer OFF setting This selector determines whether or not the ringer can be set to OFF l Selector 4 Detection of distinctive ringing pattern If this selector is set to 1 the machine detects only the number of rings if it is set to 0 the machine detects the number of rings and the ringing time length to comp...

Page 296: ... 0 1 1 3 dB 1 0 0 0 dB 1 0 1 1 dB 1 1 0 2 dB 1 1 1 3 dB 4 6 Transmission level of DTMF low band frequency signal No 4 5 6 0 0 0 0 dB 0 0 1 1 dB 0 1 0 2 dB 0 1 1 3 dB 1 0 0 0 dB 1 0 1 1 dB 1 1 0 2 dB 1 1 1 3 dB 7 8 Not used l Selectors 1 through 6 Transmission level of DTMF high low band frequency signal These selectors are intended for the manufacturer who tests the machine for the Standard Never ...

Page 297: ...t 0 OFF 1 ON 5 Not used 6 8 Not used NOTE Selector 4 is applicable to the European version only z Selector 4 Duty cycle control of pulsed current for the heat fixing unit Setting this selector to 1 activates the duty cycle control that suppresses the rush current The duty cycle is 10 ms ON and 20 ms OFF However the duty cycle control may emit switching noise to the AC line Depending upon the codes...

Page 298: ...ording paper If it is set to 0 the machine records one page data at full size 100 without reduction if it is set to 1 the machine records it at the size specified according to the current paper size z Selector 5 Minimum short OFF duration in distinctive ringing The ringer pattern consists of short and long rings e g short short long rings This selector sets the minimum OFF duration following a sho...

Page 299: ...lt resolution These selectors set the default resolution which applies when the machine is powered up or completes a transaction z Selectors 7 and 8 Default contrast These selectors set the default contrast which applies when the machine is powered up or completes a transaction WSW33 Function setting 11 Selector No Function Setting and Specifications 1 5 Not used 6 Report output of polled trans mi...

Page 300: ...TE Selectors 4 and 5 are not applicable to the American version l 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 operation it will not detect CNG afterwards If these selectors are set to 1 1 the CNG detection will not be inhibited WSW35 Function se...

Page 301: ...a from the PC z Selector 3 PC power off recognition time This selector sets the time length from when the machine detects the PC powered off until it recognizes the detected state as power off If selector 2 is set to 0 it is recommended that selector 3 be set to 1 otherwise the machine may mistakenly detect PC powered off z Selector 5 Escape from phase C This selector determines whether or not the...

Page 302: ...nes whether or not the 1st page image data of a document will be printed out onto the error report if the document image data stored in the temporary memory cannot be transmitted normally l Selector 2 Erasure of the stored image data of an unsent document at the time of the subsequent in memory message transmission If in memory message transmission fails repeatedly when selector 1 is set to 1 the ...

Page 303: ...hese selectors set the equalizer s training level to be applied if the machine fails to send training due to weak line connection If these selectors are set to 0 X the modem will automatically set the appropriate training level l Selector 3 Sending level of guard tone at phase 2 This selector sets the sending level of guard tone for 1800 Hz to be sent at Phase 2 in the V 34 mode l Selector 4 Stepp...

Page 304: ... choices of transmission speed for fallback These selectors are used to set the modem speed range With the first transmission speed choice specified by selectors 1 through 4 the machine attempts to establish the transmission link via the modem If the establishment fails the machine automatically steps down to the next highest speed and attempts to establish the transmission link again The machine ...

Page 305: ...speed choice is 33600 bps specified by selectors 1 through 4 of WSW39 for example the allowable maximum transmission speed will be limited to 31200 bps If selector 8 is set to 1 to mask the 2400 symbols second when the first transmission speed choice is 33600 bps then the allowable maximum transmission speed remains 33600 bps If selector 8 is set to 1 to mask the 2400 symbols second when the first...

Page 306: ...the V 34 mode Selectors 1 through 3 are applicable only to models equipped with a flat bed scanner l Selectors 1 through 3 ON duration of the fluorescent lamp built in the CIS unit Not used If the scanning operation is started when the fluorescent lamp is off then the lamp will come on for scanning These selectors determine how long the lamp will stay ON after scanning If these selectors are set t...

Page 307: ...hrough Internet to other remote G3 facsimile equipment WSW43 Function setting 21 Selector No Function Setting and Specifications 1 Addition of a header station ID to FAX images to be sent to PCs having e mail addresses 0 Yes 1 No 2 3 Wait time for PCFax reception Class 2 and FPTS command transmission No 2 3 0 0 50 ms 0 1 100 ms 1 0 150 ms 1 1 0 ms 4 5 Detection time of 2100 Hz CED or ANSam No 4 5 ...

Page 308: ... only to models equipped with a flat bed scanner l Selectors 6 through 8 Effective time length of the white level compensation data obtained beforehand Not used If you set documents in the ADF and the document front sensor detects them or if you open the document tray ASSY and the document tray open sensor detects the open state then the controller will make correction of the reference voltage to ...

Page 309: ...ndby position after you set them in the ADF as well as determining whether or not the ADF automatically draws in documents l Selectors 4 through 6 Periodical correction intervals of the reference voltage applied to white level compensation for document scanning during standby Not used These selectors set the correction intervals in seconds of the reference voltage to be applied to white level comp...

Page 310: ...models equipped with a flat bed scanner l Selectors 1 and 2 Monitoring the PC ON OFF state For the related functions refer to WSW36 selectors 2 and 3 l Selectors 3 Parallel port output pins kept at high level Setting this selector to 0 will keep all parallel output pins of the facsimile equipment at high level Use this setting if Resource Manager bundled with MFC models installed to Windows NT run...

Page 311: ... 1 1 0 175 pcs 1 1 1 200 pcs 6 8 Not used WSW49 Function setting 24 Selector No Function Setting and Specifications 1 2 Size of the RAM Disk when using PCL PS 0 0 None 0 1 1 Mbytes 1 0 2 Mbytes 1 1 4 Mbytes 3 Presence or absence of copy completion sound 0 Present 1 Absent 4 5 Flag detection time when receiving a command 0 0 150 ms 0 1 350 ms 1 0 550 ms 1 1 750 ms 6 7 Scanning light source WARMUP t...

Page 312: ...APPENDIX 4 CIRCUIT DIAGRAM A 48 Appendix 4 1 Main PCB Circuit Diagram 1 6 ...

Page 313: ...MFC 8220 SERVICE MANUAL A 49 Appendix 4 2 Main PCB Circuit Diagram 2 6 ...

Page 314: ...APPENDIX 4 CIRCUIT DIAGRAM A 50 Appendix 4 3 Main PCB Circuit Diagram 3 6 ...

Page 315: ...MFC 8220 SERVICE MANUAL A 51 Appendix 4 4 Main PCB Circuit Diagram 4 6 ...

Page 316: ...APPENDIX 4 CIRCUIT DIAGRAM A 52 Appendix 4 5 Main PCB Circuit Diagram 5 6 ...

Page 317: ...MFC 8220 SERVICE MANUAL A 53 Appendix 4 6 Main PCB Circuit Diagram 6 6 ...

Page 318: ...APPENDIX 4 CIRCUIT DIAGRAM A 54 Appendix 4 7 Engine PCB Circuit Diagram 1 2 ...

Page 319: ...MFC 8220 SERVICE MANUAL A 55 Appendix 4 8 Engine PCB Circuit Diagram 2 2 ...

Page 320: ...APPENDIX 4 CIRCUIT DIAGRAM A 56 Appendix 4 9 NCU PCB Circuit Diagram Europe ...

Page 321: ...MFC 8220 SERVICE MANUAL A 57 Appendix 4 10 NCU PCB Circuit Diagram U S A ...

Page 322: ...APPENDIX 4 CIRCUIT DIAGRAM A 58 Appendix 4 11 Control Panel PCB Circuit Diagram ...

Page 323: ...MFC 8220 SERVICE MANUAL A 59 Appendix 4 12 Low voltage Power Supply PCB Circuit Diagram ...

Page 324: ...APPENDIX 4 CIRCUIT DIAGRAM A 60 Appendix 4 13 High voltage Power Supply PCB Circuit Diagram 100V ...

Page 325: ...MFC 8220 SERVICE MANUAL A 61 Appendix 4 14 High voltage Power Supply PCB Circuit Diagram 200V ...

Page 326: ...APPENDIX 4 CIRCUIT DIAGRAM A 62 Appendix 4 15 Back Light PCB Circuit Diagram ...

Page 327: ... when the particular kind of paper ejects as well There are 2 types of ribs Top cover rib MFC and Top cover rib MFC2 It is necessary to be careful about the two sides of location to attach the additional ribs properly as the figure below NOTE Pay attention to the location circled by red color dotted line to attach the additional ribs against the ribs of the Top cover ASSY Top cover ASSY Top cover ...

Page 328: ...February 04 SM FAX026 6 8X5913 Printed in Japan ...

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