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FACSIMILE EQUIPMENT

SERVICE MANUAL

MODELS: MFC-9420CN
Confidential

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Table of Contents

   Also See for Brother MFC-9420CN

   Related Manuals for Brother MFC-9420CN

   Summary of Contents for Brother MFC-9420CN

  • Page 1: Service Manual

    FACSIMILE EQUIPMENT SERVICE MANUAL MODELS: MFC-9420CN Confidential...
  • Page 2: How This Manual Is Organized

    PREFACE This Service Manual is intended for use by service personnel and details the specifications, construction, theory of operation, and maintenance for the Brother machines noted on the front cover. It includes information required for troubleshooting and service--disassembly, reassembly, and lubrication--so that service personnel will be able to understand equipment function, repair the equipment in a timely manner and order spare parts as necessary.
  • Page 3 CHAPTER 8 MAINTENANCE MODE Describes the maintenance mode which is exclusively designed for the purpose of checks, settings and adjustments using the keys on the control panel. In the maintenance mode, you can update memory (EEPROM: electrically erasable programmable read-only memory) contents for optimizing the drive conditions of the head/carriage unit, paper feed roller or paper ejection roller (if they have been replaced) or for setting the CIS scanner area, for example.
  • Page 4: Table Of Contents

    TABLE OF CONTENTS CHAPTER 1 PARTS NAMES & FUNCTIONS EQUIPMENT OUTLINE.....................1-1 CONTROL PANEL ....................1-2 COMPONENTS ......................1-4 CHAPTER 2 SPECIFICATIONS GENERAL........................2-1 2.1.1 General Specifications ..................2-1 2.1.2 Paper Specifications.....................2-2 2.1.3 Printable Area ........................ 2-3 SPECIFICATIONS LIST ....................2-4 CHAPTER 3 THEORY OF OPERATION OVERVIEW........................3-1 PRINTER SECTION ....................3-2 3.2.1...
  • Page 5 CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR TRANSFERRING RECEIVED FAX DATA ..............4-1 CHAPTER 5 DISASSEMBLY/REASSEMBLY AND LUBRICATION DISASSEMBLY/REASSEMBLY ................5-1 Safety Precautions ......................5-1 Tightening Torque......................5-2 Preparation ........................5-3 How to Access the Object Component .................5-3 Disassembly Flowchart ....................5-4 5.1.1 AC Cord........................5-5...
  • Page 6 5.1.23 Interlock Switch PU (Front) ................5-42 5.1.24 Waste Toner Auger PU ..................5-43 5.1.25 Waste Toner Agitator PU ...................5-43 5.1.26 Erase Lamp PU ....................5-44 5.1.27 Marker Sensor....................5-45 5.1.28 Toner Density Sensor PU...................5-45 5.1.29 Cleaning Roller Clutch PU..................5-46 5.1.30 Main Motor PU ....................5-46 5.1.31 Fuser Clutch PU ....................5-47 5.1.32 TR Cam Clutch....................5-48 5.1.33 Registration Clutch PU ..................5-48...
  • Page 7 5.1.54 Toner Sensor PU (TTR) ..................5-65 5.1.55 Toner Present Sensor PU ..................5-66 5.1.56 Belt Sensor......................5-66 5.1.57 Left Tray Guide PU / Paper Size Sensor PU / Room Temp Thermistor PU ..5-67 5.1.58 Left Toner Guide PU ..................5-68 5.1.59 Paper Exit Unit ....................5-69 5.1.60 Transfer Roller ASSY PU ...................5-70 5.1.61 Transfer Base ASSY PU ..................5-70 5.1.62 Registration Roller ASSY PU ................5-71...
  • Page 8 6.1.4 CIS Scanner Area Setting ..................6-2 6.1.5 Setting Which Allows the User to Select the Country...........6-2 ADJUSTMENT OF THE GUIDE B POSITION OF TOP FUSE COVER FU .....6-4 PERIODIC MAINTENANCE PROCEDURES............6-5 6.3.1 Replacement of OPC Belt Cartridge ..............6-5 6.3.2 Replacement of Fusing Unit.................6-9 6.3.3 Replacement of Transfer Roller ASSY PU (120K KIT) ........6-12 6.3.4...
  • Page 9 8.4.13 Acquisition of White Level Data and CIS Scanner Area Setting (Function mode 55) ....................8-20 8.4.14 Paper Feeding and Ejecting Test (Function mode 67)........8-20 8.4.15 EEPROM Customizing (Direct entering of the four-digit code.) (Function mode 74) ....................8-21 8.4.16 Display of the Equipment’s Log Information (Function mode 80) ......8-22 8.4.17 Machine Error Code Indication (Function mode 82) ..........8-25 8.4.18 Output of Transmission Log to the Telephone Line (Function mode 87)...8-25 8.4.19 Cancellation of the Memory Security Mode...
  • Page 10 A2.2 SETTING ID CODES TO MACHINES..............APP. 2-8 APPENDIX 3 CUSTOMIZING CODES ACCORDING TO SHIPPING DESTINATION APPENDIX 4 FIRMWARE SWITCHES (WSW) APPENDIX 5 WIRING DIAGRAM APPENDIX 6 CIRCUIT DIAGRAMS NCU PCB (U.S.A. model) NCU PCB (Europe, Oceania, Asia model) NCU PCB (Japanese model) POWER SUPPLY PCB 100V, 127V POWER SUPPLY PCB 240V Confidential...
  • Page 11 SAFETY PRECAUTIONS To use the MFC safely Please keep these instructions for later reference and read them before attempting any maintenance. NOTE: If there are faxes in the machine memory, you need to print them or save them before you turn off the power and unplug the MFC.
  • Page 12 WARNING • This machine is heavy and weighs approximately 74.5 lb (33.8 kg). To prevent injuries, use at least two people to lift the machine. Be careful not to trap your fingers when you set the machine back down. • When you lift the machine make sure you use the handholds at the bottom four corners of the machine.
  • Page 13: Choosing A Location

    CHOOSING A LOCATION Place your machine on a flat, stable surface that is free of vibration and shocks. Put the machine near a telephone wall jack and a standard, grounded AC power outlet. Choose a location where the temperature remains between 50°F and 90.5°F (10°C and 32.5°C) and the humidity is between 20% to 80% (without condensation).
  • Page 14: Chapter 1 Parts Names & Functions

    CHAPTER PARTS NAMES & FUNCTIONS Confidential manuals4you.com manuals4you.com...
  • Page 15 CHAPTER 1 PARTS NAMES & FUNCTIONS This chapter contains external views and names of components and describes their functions. Information about the keys on the control panel is included to help you check operation or make adjustments. CONTENTS EQUIPMENT OUTLINE ....................1-1 CONTROL PANEL......................1-2 COMPONENTS........................1-4 Confidential...
  • Page 16: Equipment Outline

    1.1 EQUIPMENT OUTLINE Front view Automatic Document Feeder (ADF) ADF Document Output Support Flap Control Panel Document Cover Face-down Output Tray Support Flap with Extension (Support Flap) Rear Cover Front Cover Paper Tray Fig. 1-1 Rear view Parallel Interface Connector Rear Cover USB Interface Connector AC Power Connector...
  • Page 17: Control Panel

    1.2 CONTROL PANEL Fig. 1-3 1. One-Touch Keys 5. Navigation Keys These 8 keys give you instant access to 16 previously Menu/Set The same key is used for Menu and Set operations. Lets stored numbers. you access the Menu to program and store your settings 2.
  • Page 18 7. Color Start, Black Start 10. Liquid Crystal Display (LCD) Color Start Displays messages on the screen to help you set up and Lets you start sending faxes or making copies in full use your machine. color. 11. Fax and Telephone Keys Also lets you start a scanning operation (in color or black, depending on the scanning setting in the Redial/Pause...
  • Page 19: Components

    1.3 COMPONENTS The equipment consists of the following major components: ADF Unit Scanner Unit Panel Center Cover Cleaning Roller Cover PU Top Cover ASSY Side Cover LR Cleaning Roller PU Side Cover LF Paper Exit Unit Speaker I/O Board Battery ASSY Top Side L HV Power Supply Fusing Unit...
  • Page 20: Chapter 2 Specifications

    CHAPTER SPECIFICATIONS Confidential manuals4you.com manuals4you.com...
  • Page 21 CHAPTER 2 SPECIFICATIONS This chapter lists the specifications of this model, which enables you to make a comparison of different models. CONTENTS GENERAL ........................2-1 2.1.1 General Specifications ..................2-1 2.1.2 Paper Specifications.....................2-2 2.1.3 Printable Area ........................ 2-3 SPECIFICATIONS LIST....................2-4 Confidential...
  • Page 22: General

    2.1 GENERAL 2.1.1 General Specifications Memory Capacity 64 MB Automatic Document Feeder (ADF) Up to 35 sheets Paper Tray 250 Sheets (20 lb (80 g/m Printer Type Four cycle color laser Print Method Electrophotography by semiconductor laser beam scanning Liquid Crystal Display (LCD) 16 characters x 2 lines Power Source 120V AC 50/60Hz, 220 to 240V AC 50/60Hz...
  • Page 23: Paper Specifications

    2.1.2 Paper Specifications (1) Paper type Standard Paper Tray Optional lower tray (Tray 1) (Tray 2) Paper size A4, Letter, Legal, B5 (JIS/ISO), A4, Letter, B5 Executive, A5, COM10, DL, (JIS/ISO), Executive 104.8 x 210 mm to 215.9 x297 mm (4.1 x 8.3 in.
  • Page 24: Printable Area

    2.1.3 Printable Area The edges of the paper that cannot be printed on are shown below. < Portrait > < Landscape > For all available For all available paper sizes paper sizes 4.2 mm (0.17 in.) 4.2 mm (0.17 in.) 4.2 mm (0.17 in.) 4.2 mm (0.17 in.) 4.2 mm (0.17 in.)
  • Page 25: Specifications List

    2.2 SPECIFICATIONS LIST (1/15) SL4C-FB US/Canada Europe Asia/Pacific Model Name MFC-9420CN GENERAL Laser ( SL-5 ) Print Engine Scanning Method 266MHz CPU Speed Yes (up to 60 hours) Back up Clock Operating Environment Temperature 10 -32.5 degrees Centigrade Humidity 20% - 80% (without condensation)
  • Page 26 Call waiting Ready ( Only for USA ) Distinctive Ringing Yes (UK/DEN only) Yes(ARL/NZ/SIN/HK only) 33,600bps (Fax) Modem Speed Transmission Speed Approx. 3sec. (Brother#1,MMR) Super G3 ITU-T Group Coding Method MH / MR / MMR / JPEG Color FAX (Document Send / Receive) Yes/ Yes...
  • Page 27 Approx. 2 sec./page (A4 standard) Quick-Scan(Memory transmission) up to 400 pages (ITU-T Test Chart, Standard Resolution, MMR) Memory Transmission (ITU-T Chart) up to 500 pages ((Brother #1Chart, Standard Resolution, MMR) ECM(Error Correction Mode) Error Re-Transmission Yes (266 locations = One-Touch Dial + Speed Dial)
  • Page 28 (4/15) SL4C-FB US/Canada Europe Asia/Pacific Model Name MFC-9420CN PRINTER Windows GDI Standard Print Language Emulation PCL6 & BR-Script 3 Secure Print PCL : ( Bitmap font:Letter Gothic 16.66, OCR-A, OCR-B, Scalable font: 66 fonts ) Resident Fonts PS: PS compatible fonts : 66 fonts...
  • Page 29 Printer Driver TWAIN (WIA for XP) Yes (PaperPort 9.0) Viewer Control Center PC Fax Send : FaxShare Software by Brother PC Fax Receive (Parallel & USB only) PC-Fax Protocol Compliance ( machine side ) Class 2 (for RX) Remote Setup...
  • Page 30 (TELNET, SNMP, HTTP, TFTP, ARP,RARP, BOOTP, DHCP, APIPA(Auto IP), WINS/NetBIOS, DNS, LPR/LPD, Custom Raw Port/Port9100, POP3/SMTP, IPP, FTP, mDNS) Support Protocols BRAdmin Professional Web Based Management MIB-II as well as Brother private MIB Network Management NC-2200W, NC-2100p Option CONSUMABLE Toner Cartridge Black...
  • Page 31: Chapter 3 Theory Of Operation

    CHAPTER THEORY OF OPERATION Confidential...
  • Page 32 CHAPTER 3 THEORY OF OPERATION This chapter gives an overview of the scanning and printing mechanisms as well as the sensors, actuators, and control electronics. It aids in understanding the basic principles of operation as well as locating defects for troubleshooting. CONTENTS OVERVIEW ........................3-1 PRINTING MECHANISM ....................3-2...
  • Page 33: Overview

    3.1 OVERVIEW Network IC Image (LAN91C115) FLASH 16MB ROM processing ASIC2 SPEAKER NCU PCB Analog SW LINE V34 MODEM IC 32MB SDRAM 32MB SDRAM EXTEL (DFX336) ADF MOTOR FB MOTOR 128kbit EEPROM ADF DOCUMENT FRONT SENSOR SENSOR PCB ADF DOCUMENT REAR SENSOR CDCC GA Image processing...
  • Page 34: Printing Mechanism

    3.2 PRINTING MECHANISM <Mechanical & Electrical Structures> This laser beam color printer (hereinafter called “Machine”) consists of five mechanical systems; Print, Scanning, Transfer, Paper transport and control system. The machine produces color printing through the interactive operations of these five systems as shown in Fig.3-2. (1) Print System The print system consists of the following 6 (six) functional parts located around the OPC belt which form a toner image on the OPC belt.
  • Page 35 Main Motor Developer Motor I/F Controller Paper Exit Raer Cover Assy Belt Cleaner Unit OPC Belt Toner MCTL Cartridge Fusing Unit I/F Control Belt Cartridge Unit Sequence Control Belt Cleaning Transfer Belt Development Laser Control Transfer Unit Transfer Unit First Transfer Transfer Roller Second Transfer Exposure...
  • Page 36 (5) Control System The control system consists of the following 4 (four) control parts and runs the machine by processing the interface signals transmitted from the host computer and interfacing to the print, transfer, scanning and transport systems. • Sequence Control •...
  • Page 37 (2) Basic Color Printing Process 1) The machine has a toner cartridge of each color yellow, magenta, cyan and black as shown in Fig.3-4. 2) The toner image developed using the primary colors is transferred to the transfer drum for the printed color combination as shown in Fig.3-5 (a). 3) The toner image formed on the transfer drum is transferred to the transported paper as shown in Fig.3-5 (b).
  • Page 38 <Structure of the OPC Belt> The OPC belt consists of a surface layer having a photoconductor (OPC) of organic material, the inner layer of an insulator material (PET / Mylar) and an aluminum deposit layer in between. The OPC belt is located as shown in Fig.3-6 as the main part of the print system. Belt Cartridge Toner Cartridge OPC Belt...
  • Page 39: Print System And Transfer System

    3.2.1 Print System and Transfer System Fig.3-8 shows the basic structure of the print system having the OPC belt as the main part and the transfer system having the transfer drum as the main part. Color printing is made by actuating the each process in the print system and transfer system.
  • Page 40: 1 ] Structure Of The Machine

    [ 1 ] Structure of the machine Component part Process OPC Charger Roller PU Charging Laser ASSY PU Exposing Toner Cartridge PU Developing Belt Cartridge PU Receiving of image Transfer Belt (Transfer Unit PU) Transferring of image Belt Discharger Erase Lamp Discharging of OPC belt Cleaning Blade Cleaning of OPC belt...
  • Page 41: 2 ] Basic Structure Of The Printing System

    [ 2 ] Basic structure of the printing system A toner image is formed through the potential of the OPC belt varying in each of the charger, exposure, development, transfer and cleaning processes. (1) Process of Print System (See Fig.3-10.) 1) The OPC belt is biased to the voltage -CBV(V) by the power supply CBV.
  • Page 42 GND potential of the transfer drum is greater than -VR(V) of the OPC belt. 6) The OPC belt is discharged by the erase lamp. Latent Image Toner Image -CBV -CBV -CBV -CBV brother brother -CBV -CBV -CBV -CBV OPC Belt brother Blade...
  • Page 43: 3 ] Details Of Each Process

    [ 3 ] Details of each process Charging The charging process means that OPC belt is evenly charged by the OPC charger roller PU. (1) Structure of the charger unit (Refer to Fig.3-9 and Fig.3-12) 1) OPC charger roller PU is located as shown in Fig.3-9. 2) Charge high voltage is applied to the OPC charger roller PU.
  • Page 44 Exposing The exposing process means that the OPC belt surface is exposed to the laser beam to form an electrostatic latent image. (1) Structure of Laser ASSY PU 1) Laser ASSY PU is located as shown in Fig.3-9. 2) Luminous source of the laser beam is a semiconductor laser. 3) Scanning is made to laser light on OPC belt as converting the laser beam to the beam light through lens and reflective mirror to form an electrostatic latent image.
  • Page 45 Developing Developing process means that an electrostatic latent image on OPC belt is made visible with toner. (1) Structure of toner cartridge PU (Refer to Fig.3-9 & 3-15.) 1) Toner cartridge PU is located as shown in Fig.3-9. 2) Four toner cartridges are made available from the top to bottom in the order of specified color as black, yellow, magenta and cyan.
  • Page 46 Fig. 3-16 Fig. 3-17 3 - 1 4 Confidential manuals4you.com manuals4you.com...
  • Page 47 First Transfer (Belt) The first transfer process means that the toner images on the OPC belt is transferred onto the transfer belt. (1) Structure of the transfer belt (Refer to Fig.3-9.) 1) First transfer part is located as shown in Fig.3-9. 2) Material of the drum is aluminum.
  • Page 48 (2) Process of first transfer (Refer to Fig.3-19.) 1) OPC belt that has been through the development process rotates as contacting and synchronizing with the transfer belt and drum. 2) OPC belt has been biased to the potential of -CBV(V). Potential of the transfer belt is nearly GND.
  • Page 49 Belt Discharging (Erase Lamp) OPC belt discharging process means that upon completion of the first transfer process, LED light is radiated on the OPC belt prior to cleaning the belt to discharge the residual charge for electrical cleaning. (1) Structure of erase lamp PU 1) Erase lamp PU is located as shown in Fig.3-9.
  • Page 50 Belt Cleaning OPC belt cleaning process means that the residual toner adhering to the OPC belt surface is mechanically scavenged. (1) Structure of belt cleaning Blade for the OPC belt cleaning is located to the belt cartridge as shown in Fig.3-9. (2) Process of OPC belt cleaning (Refer to Fig.3-21.) 1) There is a residual toner on the OPC belt as it has not been transferred in the process of first transfer.
  • Page 51 Second Transfer (Paper) Second transfer process means that the toner image on the transfer belt is transferred onto the transported paper. (1) Structure of belt cleaning 1) Transfer roller for the second transfer is located as shown in Fig.3-9. 2) Transfer roller is normally separated from the transfer belt. 3) Transfer roller is positively biased by the power supply THV.
  • Page 52 Drum Cleaning Transfer belt cleaning process means that the residual toner on the transfer belt is removed. (1) Structure of transfer unit cleaner PU (Refer to Fig.3-23.) 1) Transfer unit cleaner PU is located as shown in Fig.3-9. 2) Cleaning brush is a semiconductor type fur brush to clean the surface of transfer belt as rotating.
  • Page 53: Laser Assy Pu

    3.2.2 Laser ASSY PU This machine employs a semiconductor laser diode as a light source. This laser diode is controlled by the fast switching according to transmitted image data (video signal). The generated laser light scans over the OPC belt through a polygon mirror and lens, by which electrostatic latent images will be formed on the OPC belt.
  • Page 54: Paper Transportation System

    3.2.3 Paper Transportation System (1) Outline This machine employs the automatic paper feeding with the paper tray. When toner images are formed on the transfer belt through the operations of print system and transfer system, a paper is fed by the paper feed roller and transported to the registration roller. The transported paper is further transported to the transfer, fuser and exit part by the registration roller synchronizing with the rotation of the transfer belt.
  • Page 55: Fusing Unit

    3.2.4 Fusing Unit Fusing unit employs the thermal fusing system containing the heater in the roller. Papers carrying the toner images pass between the heat rollers. Heat and pressure is applied to the paper when passing between the heat rollers so that the toner image is melted and fused on the paper. (1) Structure Fusing unit consists of the following component members;...
  • Page 56 (2) Process of fusing (Refer to Fig.3-27.) The toner image that has been transferred onto the paper is simply adhered on the paper but not fused yet. Transported paper passes between the heater roller and back-up roller. Each roller is heated up to approx. 150°C, and received approx.200N from the opposite heat roller.
  • Page 57: Structure Of The Control System

    3.3 STRUCTURE OF THE CONTROL SYSTEM 3.3.1 Basic Structure [ 1 ] Electrical system and function Most of the main electrical parts of this machine are controlled by the MCTL (engine controller) PCB. <Structure of the Sequence Control> The basic structure of the sequence control is shown in Fig.3-28. Print Process Control: To control the print process from the paper feed through paper exit.
  • Page 58 Main Cooling Cooling Scanner Motor 2 Fan Laser Fan (EX) 2 Control Motor Panel Host Computer ATC (4 pcs.) Belt Drum Sensor Sensor MCTL (Engine Controller) Video Sequence Control Controller Control Laser Control Temperature Control Toner Empty Sensing Control Control Panel Control Error Processing Program Paper Sensor (F.CL) Paper Sensor (P.EN)
  • Page 59 <Layout & Function of the Electrical Parts> (1) Print PCB (Refer to Fig. 3-29.) Name Function To control the series of processes of the Machine: Fuser Engine Controller temperature control, Laser output control, Operator panel Board PU indication, Toner empty sensing control, Error processing (MCTL P.W.B.) control, Interface control.
  • Page 60 (2) Motors (Refer to Fig. 3-30.) Name Code Function Main Motor PU To drive the OPC belt and the paper transport system. Developer Motor PU To drive the toner cartridge and the developing system. Scanner Motor To scan the laser beam. (Laser ASSY) EXFAN Exit Fan PU...
  • Page 61 (3) Clutches and Solenoids (Refer to Fig.3-31.) Name Code Function PCLU Paper Feed To feed papers by coupling the feeding roller to Clutch PU the main gear unit at timing of the paper feeding. RECL Registration To transport papers by coupling the registration Clutch PU roller to main gear unit as synchronized with the rotation of transfer drum.
  • Page 62 (4) Sensors Name Code Function Paper Size Sensor PU Photo sensor to detect the paper size. Registration Sensor PU Photo sensor to detect the paper is fed from the paper tray. Fuser Exit Sensor PU Photo sensor to detect that paper is exited from the paper exit unit.
  • Page 63 16. ADF Front Sensor 3. Fuser Exit Sensor PU 15. ADF Rear Sensor 11. Temperature Sensor for Fusing Unit ADF Sensor 12. Output Tray Full Sensor PU 8. OPC Marker Sensor PU 9. Toner Sensor PU 5. OHP Sensor PU 4.
  • Page 64: Control System

    3.3.2 Control System [ 1 ] Control of the print process A micro CPU mounted on the MCTL PCB controls the print processes. <Print Sequence Diagram> Main Cooling Cooling Scanner Motor 2 Fan OZ Fan (EX) 2 Control Motor Panel Host Computer ATC (4 pcs.) Belt...
  • Page 65 (2) Laser drive control circuit Laser drive control circuit (LDC) consists of the video signal input circuit, laser drive circuit, laser diode, output sensing circuit and output control circuit, as shown in Fig.3-34. <Operation> 1) When the video signal is inputted, the laser drive control circuit has the laser diode switched on and radiated according to the video signal.
  • Page 66 (3) Control of the Fusing Temperature Each roller of the fusing unit is controlled to maintain the appropriate temperature so that toner will be fixed correctly onto the print paper. <Basic Structure of Temperature Control (Fig.3-35)> FLS: Thyristor to control the on/off operation of power supply to the heat lamp.
  • Page 67 Fig. 3-35 3 - 3 5 Confidential...
  • Page 68 <Controlled Temperature and Safety> Temperature (160) Time Fig. 3-36 To maintain the set point (temperature) for fusing of toner to be approx. 160°C as appropriate by turning on/off the thyristor. Reference temperature (approx. 185°C) to identify that it is excessively hot inside the fusing unit.
  • Page 69 <Temperature Control and Safety> The detection of the fusing temperature is performed by the thermistor and transmitted to the temperature control circuit. The temperature control circuit makes the comparative control with the basic control temperature signal and ON/OFF control over the triac (FLS) so that the temperature of the heat roller will be the preset temperature (PS).
  • Page 70 (4) Interface Control <General> 1) Interface type This document describes the video and command/status Interface between laser printer controller (LPC) and engine controller. Printer controller acts as a slave to LPC. through video interface, LPC controls the printer & operator panel using command/status communication and transmits the synchronized video data to printer laser diode.
  • Page 71 3) Interface Circuit (Printer side) Fig. 3-38 3 - 3 9 Confidential...
  • Page 72 4) Connector Pin Assignment The connector in the machine to connect to the controller board is type 128A-064S2B-:L14A (DDK) or the equivalent. <Connector pin assignment for video interface signals and DC power supply (Engine side)> Pin No. Signal Name Pin No. Signal Name PSGND PSGND...
  • Page 73: Main Pcb (video Controller Pcb)

    3.3.3 Main PCB (Video Controller PCB) [ 1 ] Outline The main PCB consists of the circuits which perform the following functions; • Receive the printing data from the computer. • Convert the received data to the bitmap data such as characters or graphics. •...
  • Page 74 (4) SO-DIMM SO-DIMM allows memory extension by up to 576MB. 1 SO-DIMM socket is available. The following type of DIMM can be installed into each slot. • Type: 144 pin and 64 bit output • Memory type: SDRAM • Clock frequency: PC100 or PC133 •...
  • Page 75 (6) Engine interface block The engine interface consists of the following signals; <IREADY> The signal indicating the engine is ready. <PRREQ> Signal requesting printing from the controller. <KEY_STATUS> Signal indicating that a key switch status on the control panel has changed. <VSYNC>...
  • Page 76 The COMMAND signal and STATUS signal are the signals that are used to transfer the data between the controller and the engine, which perform as a half-duplex asynchronous serial communication. Refer to Fig.3-40. Stop bit Start bit Parity bit COMMAND 8ms (TYP) 30ms (MAX) STATUS...
  • Page 77: Scanner Mechanism

    3.4 SCANNER MECHANISM This mechanism consists of the document cover, the scanner unit (scanner cover), and the automatic document feeder (ADF). The scanner unit consists of a scanner top cover, CIS unit, CIS drive assembly, and scanner base. The detailed illustration on the next page shows the components making up the ADF: document pull-in roller, document separation roller, document feed roller, ADF motor, and document front and rear sensors.
  • Page 78: Confidential

    Separate roller shaft ASSY Separate roller Suction roller Separation rubber ASSY Document rear actuator Document front actuator Separation roller shaft ASSY ADF motor Document Pressure roller Ejection roller Document cover LF roller Pressure roller Pressure roller Document rear actuator Document front actuator Fig.
  • Page 79 (1) ADF scanning: Document moves across stationary CIS unit Placing a document face up in the document support activates the document front sensor, switching to ADF scanning. The CIS drive mechanism (details below) operates for each scanning command executed. The CIS unit first moves to the white-level reference film for white level compensation and then to the ADF scanning position.
  • Page 80 CHAPTER TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR Confidential manuals4you.com manuals4you.com...
  • Page 81 CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR This chapter describes how to transfer data left in the machine to be sent for repair. The service personnel should instruct end users to follow the transfer procedure given in this chapter if the machine at the user site cannot print received data due to the printing mechanism defective.
  • Page 82: Transferring Received Fax Data

    4.1 TRANSFERRING RECEIVED FAX DATA When the machine at the user site requires to be repaired, unplugging the power cord from the wall socket for sending the machine for repair will lose received FAX data if unprinted and left in the machine.
  • Page 83 Cover page sample End page sample Fig. 4-1 4 -2 Confidential...
  • Page 84: Chapter 5 Disassembly/reassembly And Lubrication

    CHAPTER DISASSEMBLY/REASSEMBLY AND LUBRICATION Confidential manuals4you.com manuals4you.com...
  • Page 85 CHAPTER 5 DISASSEMBLY/REASSEMBLY AND LUBRICATION This chapter details procedures for disassembling and reassembling the machine together with related notes. The disassembly order flow provided enables you to see at a glance the quickest way to get to component(s) involved. At the start of a disassembly job, you check the disassembly order flow that guides you through a shortcut to the object components.
  • Page 86 5.1.19 Center Cover ......................5-40 5.1.20 Right Side Cover PU ..................5-40 5.1.21 Side Cover LF ....................5-41 5.1.22 Speaker ......................5-41 5.1.23 Interlock Switch PU (Front) ................5-42 5.1.24 Waste Toner Auger PU ..................5-43 5.1.25 Waste Toner Agitator PU ...................5-43 5.1.26 Erase Lamp PU ....................5-44 5.1.27 Marker Sensor....................5-45 5.1.28 Toner Density Sensor PU ..................5-45 5.1.29 Cleaning Roller Clutch PU .................5-46...
  • Page 87 5.1.50 HV Power Supply PU ..................5-61 5.1.51 LV Power Supply PU / Power Supply Bracket PU ASSY ........5-62 5.1.52 Fuser Connector PU ..................5-63 5.1.53 Toner Retract Solenoid PU (DESLY/DESLM/DESLC/DESLK) / Toner Retract Cam PU..................5-64 5.1.54 Toner Sensor PU (TTR) ..................5-65 5.1.55 Toner Present Sensor PU ..................5-66 5.1.56 Belt Sensor......................5-66 5.1.57 Left Tray Guide PU / Paper Size Sensor PU / Room Temp Thermistor PU ..5-67...
  • Page 88: Disassembly/reassembly

    5.1 DISASSEMBLY/REASSEMBLY Safety Precautions To prevent the creation of secondary problems by mishandling, observe the following precautions during maintenance work. Before starting disassembly/reassembly jobs, unplug the power cord and telephone line. In particular, when having access to the power supply inside the machine, make sure that the power cord is unplugged from the electrical outlet;...
  • Page 89: Tightening Torque

    Tightening Torque Location of screw Screw type Q'ty Tightening torque N•m (kgf•cm) 0.59 ±0.1 (6 ±1) FB motor Screw, pan (s/p washer) M3x6 0.49 ±0.1 (5 ±1) Gear holder ASSY Taptite, cup B M3x10 0.78 ±0.1 (8 ±1) Scanner top cover ASSY Taptite, bind B M4x12 Drive frame ASSY Upper document chute...
  • Page 90: Preparation

    Preparation Prior to proceeding with the disassembly procedure, Unplug the modular jack of the telephone line, the USB cable, if connected (not shown below), and the modular jack of the external telephone set if connected (not shown below). USB cable Telephone line External telephone How to Access the Object Component...
  • Page 91: Disassembly Flowchart

    Disassembly Flowchart 後日変更 AC Cord Link Lever Front Cover Drum/Toner ASSY Tail Edge Actuator Pickup Roller Holder ASSY Paper Tray Regist Front Actuator / Regist Sensor PCB ASSY Regist Front Spring Fixing Unit Rear Cover Regist Rear Actuator / Pickup Roller Holder ASSY High-Voltage PS PCB ASSY Rear Chute Cover Regist Rear Spring...
  • Page 92: Ac Cord

    5.1.1 AC Cord (1) Disconnect AC cord from the machine. Machine AC cord Fig. 5-1 5 -5 Confidential manuals4you.com manuals4you.com...
  • Page 93: Opc Belt Cartridge

    5.1.2 OPC Belt Cartridge (1) Open the scanner unit and the center cover. (2) To release the lock, push the green lock lever BC on both sides inwards. (3) Remove the OPC belt cartridge. Center cover Lock lever BC Lock lever BC OPC belt cartridge Center cover Fig.
  • Page 94: Fusing Unit

    5.1.4 Fusing Unit Caution [ Caution and Request for Replacement of Maintenance Parts ] (1). The fuser unit is the unit replaceable component and consists of the important parts that are important for the product safety. The disassembly and replacement of the maintenance parts shall be performed by the skillful personnel having completed the appropriate training and at the appropriate location having the test facilities for the product safety test.
  • Page 95 (1) Open the rear cover and scanner unit. (2) Release the two lock knobs to remove the fusing unit from the machine. Lock lever Lock lever Fig. 5-3 Fusing unit Fig. 5-4 (3) Remove the setscrew (A) (BT3x6, 1 piece), the shoulder screw (A’) and pull up the two release levers to remove the top fuser cover FU.
  • Page 96 (14) Pull out the fuser lamp from the fuser roller (HT). NOTE: Since the voltage of heater lamp is subject to the destination, confirm the specified rated voltage. (US : 120V 940W, EC : 240V 940W, JP : 100V 940W) (15) Remove the setscrew (J) (ST3x6 with washer, 2 pieces) to remove the two terminals of the fuser connector harness.
  • Page 97 Fuser lamp (I): SM3x6 with washer Lamp holder (H): SM3x6 with washer Fuser roller (HT) (E): SM3x6 with washer Fuser lamp Fig. 5-6 (K): FU shoulder screw Fuser connector FU (L): BT3x12 Bottom fuser cover FU (L): BT3x6 Thermistor ASSY FU (J): ST3x6 with washer Fig.
  • Page 98: Side Cover Lr

    5.1.5 Side Cover LR (1) Remove the screw, and then remove the side cover LR. Screw Side cover LR Fig. 5-8 5 -1 1 Confidential manuals4you.com manuals4you.com...
  • Page 99: Top Side L

    5.1.6 Top Side L (1) Remove the screw to remove the shield plate. Shield plate Screw Fig. 5-9 (2) Remove the screw and then remove the top side L. Top side L Screw Fig. 5-10 5 -1 2 Confidential...
  • Page 100: Adf Unit

    5.1.7 ADF Unit (1) Remove the harness cover. Harness cover Fig. 5-11 (2) Remove the screw to remove the two ground wires. ADF harness FB motor harness Ground wire Ground wire Screw Main PCB Fig. 5-12 5 -1 3 Confidential manuals4you.com manuals4you.com...
  • Page 101 (3) Disconnect the four connectors and one CIS flat cable from the main PCB. Panel PCB harness (CN15) ADF motor harness (CN13) FB motor harness (CN12) ADF sensor harness (CN11) CIS flat cable Main PCB ADF motor ADF sensor FB motor Panel PCB Speaker Battery...
  • Page 102 (4) Close the ADF unit and scanner unit. (5) Release the two pins and remove the ADF cover. ADF cover Scanner unit Fig. 5-14 (6) Release the two hooks, and then remove the pressure roller ASSY. (7) Remove the two LF springs from the ADF cover. Pressure roller ASSY LF spring ADF cover...
  • Page 103 (8) Remove the two pressure rollers from the pressure roller shaft. Pressure roller shaft Pressure roller Fig. 5-16 (9) Open the ADF unit. (10) Release the hook to remove the gear cover from the ADF unit. ADF unit Gear cover Hook Gear cover Fig.
  • Page 104 (11) Close the ADF unit. (12) Release the lock lever and then remove the separate roller shaft ASSY and separate roller bushing from the ADF unit. Separate roller shaft ASSY Lock lever Separate roller bushing ADF unit Fig. 5-18 (13) Remove the four cup B M3x10 taptite screws. (14) Release the hook “A”...
  • Page 105 (15) Remove the separation rubber ASSY from the upper document chute. Separation rubber ASSY “A” ADF plate spring “A” Hook Upper document chute Hooks Fig. 5-20 (16) Remove the separation rubber from the ADF plate spring. Separation rubber ADF plate spring Fig.
  • Page 106 (17) Remove the one cup S M3x6 taptite screw to remove the ADF FG harness. (18) Remove the ADF motor harness from the ADF motor. (19) Remove the ADF sensor harness ASSY from the ADF sensor PCB ASSY. ADF motor Taptite, cup B M3x10 ADF sensor harness ASSY ADF FG harness...
  • Page 107 (22) Release the hook on the ADF unit and remove the ejection roller ASSY. ADF unit Ejection roller ASSY Hook Fig. 5-24 (23) Remove the two ejection rollers from the pressure roller shaft. Pressure roller shaft Ejection roller Ejection roller Fig.
  • Page 108 (25) Release the two hooks and remove the resin bearing. (26) Remove the LF roller ASSY from the lower document chute. LF roller ASSY Hooks Lower document chute Resin bearing Fig. 5-27 (27) Release the two hooks “A” and remove the ejection roller ASSY from the lower document chute.
  • Page 109 (28) Release the two hooks “B” and remove the ejection roller bearing from the ejection roller ASSY. Ejection roller ASSY Ejection roller bearing Hook “B” Fig. 5-29 (29) Remove the two cup B M3x10 taptite screws to remove the drive frame ASSY. Lower document chute Drive frame ASSY Taptite, cup B M3x10...
  • Page 110 (30) Remove the one bind S M3x6 taptite screw from the drive frame ASSY to remove the ADF motor. Hook Drive frame ASSY ADF motor Taptite, bind S M3x6 Fig. 5-31 NOTE: When re-assembling drive frame ASSY, assemble it so that the arm ASSY is at the top.
  • Page 111 (31) Remove the document rear actuator from the lower document chute. Document rear actuator Lower document chute Hook Fig. 5-33 (32) Remove the document front actuator from the lower document chute. Document front actuator Hook Lower document chute Fig. 5-34 5 -2 4 Confidential...
  • Page 112 (33) Release the two hooks “A” on the lower document chute to remove the ADF sensor PCB ASSY. ADF sensor PCB ASSY Hooks “A” Lower document chute Hooks Fig. 5-35 (34) Turn the lower document chute upside down. (35) Release the pins and remove the document hold. (36) Remove the document spring from the lower document chute.
  • Page 113 (37) Remove the one bind B M4x12 taptite screw from the document cover sub ASSY. (38) Open the ADF unit and then release the hook to remove the document cover ASSY. Hinge Hook Document cover ASSY ADF unit Taptite, bind B M4x12 Fig.
  • Page 114 (41) Remove the two pressure rollers from the pressure roller shaft. Pressure roller shaft Pressure rollers Fig. 5-39 (42) Remove the three cup B M3x10 taptite screws to remove the hinge ASSY L. (43) Remove the hinge from the hinge arm. (44) Remove the one bind B M4x12 taptite screw to remove the hinge arm.
  • Page 115: Scanner Unit

    5.1.8 Scanner Unit (1) Open the scanner unit. (2) Remove the two screws from the scanner slider L. (3) Remove the two screws from the scanner slider R. Scanner slider R Scanner slider L Scanner unit Screws Screws Fig. 5-41 (4) Remove the cable cover to remove the CIS flat cable from the cable cover.
  • Page 116: Pull Arm/scanner Slider L, R

    5.1.9 Pull Arm/Scanner Slider L, R (1) Remove the scanner slider L, R from the pull arm. Scanner slider R Pull arm (R) Scanner slider L Pull arm (L) Fig. 5-43 (2) Remove the pull arm (L) from the joint cover to remove the pull arm spring. (3) Remove the pull arm (R) from the joint cover to remove the pull arm spring.
  • Page 117: Is Lock Lever Assy

    5.1.10 IS Lock Lever ASSY (1) Remove the IS lock lever ASSY as shown in the figure below. IS lock lever ASSY IS lock lever ASSY Fig. 5-45 5.1.11 Tray (TP) (1) Remove the tray (TP) from the top cover. Tray (TP) Fig.
  • Page 118: Panel

    5.1.12 Panel (1) Lift up the front edge of the panel cover ASSY and release the six hooks “A”. (2) Release the four hooks “B” to remove the panel cover ASSY. Hooks “B” Hooks “B” Hooks “A” Panel cover ASSY Hooks “A”...
  • Page 119 (5) Turn the panel unit upside down. (6) Disconnect the connector of the backlight. Backlight connector Panel unit Fig. 5-49 (7) Release the three hooks “C” to remove the panel PCB from the panel unit. Panel PCB Hook “C” Panel unit Hook “C”...
  • Page 120 (8) Remove the LCD harness from the panel PCB. Lock Panel unit Panel PCB LCD harness Fig. 5-51 (9) Remove the rubber key. NOTE: When re-assembling the rubber key, make sure that the key works correctly. Rubber key Bosses Panel unit Bosses Bosses Bosses...
  • Page 121 (10) Release the two hooks “D” to remove the LCD cover and LCD holder backlight module from the panel unit. LCD cover Hooks “D” Hooks LCD holder backlight module Panel unit Fig. 5-53 (11) Release the two hooks “E” to remove the LCD from the LCD holder backlight module. NOTE: When re-assembling the LCD, assemble the LCD holder back light module onto the panel unit first, put the hooks on the LCD cover into the panel unit, and put the hook “E”...
  • Page 122: Battery Assy

    5.1.13 Battery ASSY (1) Disconnect the connector from the main PCB to remove the battery ASSY. Main PCB Battery ASSY Fig. 5-55 5-35 Confidential manuals4you.com manuals4you.com...
  • Page 123: Main Pcb

    5.1.14 Main PCB (1) Disconnect the two connectors from the main PCB. (2) Remove the four screws (A) and two screws (B) from the main PCB. Screws (A) Screws (B) Speaker harness connector Main PCB Screws (A) NCU harness ASSY connector Fig.
  • Page 124: Ncu Pcb Assy

    5.1.15 NCU PCB ASSY (1) Remove the two screws to remove the NCU unit. Screw NCU unit Screw Fig. 5-58 (2) Remove the NCU harness ASSY from the NCU PCB ASSY. (3) Remove the two screws to remove the NCU PCB ASSY. NOTE: When re-assembling the NCU PCB ASSY, make sure that the LAN connector is connected and two hooks are caught securely.
  • Page 125: Top Side R

    5.1.16 Top Side R (1) Open the rear cover. (2) Remove the screw to remove the top side R. Top side R Screw Rear cover Fig. 5-60 5.1.17 Cleaning Roller Cover PU / Cleaning Roller PU (1) Open the center cover. (2) Release the two hooks to remove the cleaning roller cover PU.
  • Page 126: Top Cover

    5.1.18 Top Cover (1) Remove the four screws from the top cover. (2) Release the two hooks to remove the top cover. Screws Center cover Top cover Hooks Front cover Fig. 5-62 5-39 Confidential manuals4you.com manuals4you.com...
  • Page 127: Center Cover

    5.1.19 Center Cover (1) Remove the center cover from the top cover. Center cover Top cover Fig. 5-63 5.1.20 Right Side Cover PU (1) Remove the waste toner pack PU. (2) Remove the setscrew (BT4x10, 2 pieces) of right side cover PU. (3) Remove the right side cover PU from the machine.
  • Page 128: Side Cover Lf

    5.1.21 Side Cover LF (1) Remove the three screws to remove the side cover LF. Side cover LF Screws Fig. 5-65 5.1.22 Speaker (1) Release the four hooks to remove the speaker. Speaker Hooks Hooks Fig. 5-66 5-41 Confidential manuals4you.com manuals4you.com...
  • Page 129: Interlock Switch Pu (front)

    5.1.23 Interlock Switch PU (Front) (1) Disconnect the connector connecting to the interlock switch PU (front). (2) Remove the interlock switch PU (front) from the switch base (DF). The switch is supported by the hooks and shaft. Shaft Hooks Connector Interlock switch PU (front) Fig.
  • Page 130: Waste Toner Auger Pu

    5.1.24 Waste Toner Auger PU (1) Remove the setscrew (BT3x8, 2 pieces) of the waste toner auger PU. (2) Remove the waste toner auger PU from the frame. NOTE: • In this instance, do not cause the waste toner fall on the floor. •...
  • Page 131: Erase Lamp Pu

    5.1.26 Erase Lamp PU (1) Remove the knob screw (2 pieces) of the transfer unit PU from rear. (2) Holding the band provided at the top side of the transfer unit PU, pull out the transfer unit PU from the inside of the frame. In this instance, do not cause the belt surface touch the peripheral parts.
  • Page 132: Marker Sensor

    5.1.27 Marker Sensor (1) Disconnect the two connectors connecting to the maker sensor and toner density sensor PU. (2) Remove the setscrew (BT4x8, 2 pieces), and remove the sensor base (TB) from the frame. (3) Remove the maker sensor from the sensor base (TB). BT4x8 Connector Toner density sensor PU...
  • Page 133: Cleaning Roller Clutch Pu

    5.1.29 Cleaning Roller Clutch PU (1) Remove the harness connector of the cleaning roller clutch PU. (2) Remove the setscrew (TS3x8, 3 pieces) fixing the cleaning roller clutch PU. (3) Remove the cleaning roller clutch PU from the frame. Frame Cleaning roller clutch PU TS3x8 Connector...
  • Page 134: Fuser Clutch Pu

    (4) Remove the setscrew (BT3x12, 4 pieces) of the main motor PU. (5) Remove the main motor PU from the OPC drive gear ASSY PU. CAUTION: Do not damage the output shaft, otherwise, it may cause the degradation of print quality. OPC drive gear ASSY PU Main motor PU BT3x12...
  • Page 135: Tr Cam Clutch

    5.1.32 TR Cam Clutch (1) Remove the washer fixing the TR cam clutch. (2) Remove the TR cam clutch from the shaft. Shaft TR cam clutch Washer Fig. 5-77 NOTE: When reassembling the motors, ensure to secure each of them onto the correct position since they are exactly alike.
  • Page 136: Paper Feed Clutch Pu

    5.1.34 Paper Feed Clutch PU (1) Remove the washer fixing the paper feed clutch PU to the shaft. (2) Remove the paper feed clutch PU from the shaft. Shaft Paper feed clutch PU Washer Fig. 5-79 5.1.35 Developer Motor PU (1) Remove the setscrew (ST3x6, 4 pieces) fixing the developer motor PU.
  • Page 137: Waste Toner Holder Assy Pu

    5.1.36 Waste Toner Holder ASSY PU (1) Loosen the setscrew (BT3x8, 1 piece) of the plate. (2) Uprear (Do not remove) the waste toner feeder pipe. (3) Remove the setscrew (BT3x8, 1 piece and BT3x12, 1 piece) of the waste toner holder ASSY (4) Remove the waste toner holder ASSY PU.
  • Page 138: Developer Gear Pu / Developer Drive Assy Pu

    5.1.38 Developer Gear PU / Developer Drive ASSY PU (1) Remove the washer (4 places) fixing the developer gear PU to the shaft. (2) Remove the developer gear PU (4 places) from the inside of the frame. (3) Remove the setscrew (BT3x8, 4 pieces) of the developer drive ASSY PU. (4) Remove the developer drive ASSY PU from the frame.
  • Page 139: Main Drive Gear Assy Pu

    5.1.40 Main Drive Gear ASSY PU (1) Close the rear cover. (2) Remove the setscrew (ST4x6, 1 piece) of the side base stay (R). (3) Open the rear cover. (4) Remove the setscrew (BT4x10, 3 pieces and ST3x6, 2 pieces) of the side base stay (R) to remove the side base stay.
  • Page 140: Waste Toner Feeder Pu

    5.1.41 Waste Toner Feeder PU (1) Remove the setscrew (BT3x8, 2 pieces) to remove the cover C. (2) Remove the setscrew (BT3x8, 1 piece) to remove the plate. (3) Remove the waste toner feeder PU from the frame. NOTE: • One end of waste toner feeder PU is supported by the hole inside the frame. •...
  • Page 141: Toner Sensor Pu (tpd)

    5.1.42 Toner Sensor PU (TPD) (1) Remove the setscrew (BT3x8 and BT3x6, 1each) of the toner sensor PU (TPD). (2) Remove the connector (inside the frame) connecting to the toner sensor PU (TPD). (3) Remove the toner sensor PU (TPD) from the frame. <Confirmation Items>...
  • Page 142: Right Toner Guide Pu

    5.1.43 Right Toner Guide PU (1) Remove the setscrew (BT4x8, 1piece) of the right toner guide PU. (2) Remove the right toner guide PU from the frame. Frame BT4x8 Right toner guide PU Fig. 5-88 5.1.44 Laser ASSY PU / Laser Unit Fan ASSY PU (1) Disconnect the connector connecting to the laser unit fan ASSY PU.
  • Page 143 (3) Remove the setscrew (TS3x12, 4 pieces) of the laser ASSY PU. (4) Disconnect the connector connecting to the laser ASSY PU. (5) Remove the laser ASSY PU from the frame. CAUTION: • Laser beam of the class IIIB is scanned in the laser ASSY PU. Do not attempt to disassemble the laser ASSY PU because it is dangerous.
  • Page 144: Inner Front Cover Pu / Front Cover Pu

    5.1.45 Inner Front Cover PU / Front Cover PU (1) Remove the setscrew (BT3x8, 8 pieces) of the front cover PU. (2) Remove the front cover PU from the inner front cover PU. (3) Remove the fixing band from the machine side. (4) Decline toward you the support pin (left and right) connecting to the frame with the front door unit closed, and then disconnect the connection.
  • Page 145: Engine Control Board Pu

    5.1.47 Engine Control Board PU (1) Remove the setscrew (ST3x6, 3 pieces) of the shield cover (A). (2) Remove the shield cover (A). ST3x6 Shield cover (A) Fig. 5-93 (3) Disconnect all the connectors connecting to the engine controller board PU. (4) Remove the setscrew (ST3x6, 5 pieces) of the engine controller board PU.
  • Page 146: Power Supply Fan Pu / Interlock Switch Pu (top, Paper Exit) / Power Supply Fan Duct Pu

    5.1.48 Power Supply Fan PU / Interlock Switch PU (Top, Paper Exit) / Power Supply Fan Duct PU (1) Remove the setscrew (BT4x10, 1 piece) of the power supply fan ASSY PU. (2) Remove the power supply fan ASSY PU from the frame. (3) Disconnect the connector connecting to the power supply fan ASSY PU.
  • Page 147: Scanner Door Sensor

    5.1.49 Scanner Door Sensor (1) Remove the scanner door sensor actuator from the power supply fan duct PU. (2) Remove the scanner door sensor from the power supply fan duct PU. Scanner door sensor actuator Power supply fan duct PU Scanner door sensor Fig.
  • Page 148: Hv Power Supply Pu

    5.1.50 HV Power Supply PU (1) Remove the setscrew (ST3x6, 4 pieces) of the shield cover (B). (2) Remove the shield cover (B) from the frame. (3) Remove the setscrew (ST3x6, 3 pieces) of the controller box. (4) Remove the controller box from the frame. (5) Remove the flat cable from the HV power supply PU.
  • Page 149: Lv Power Supply Pu / Power Supply Bracket Pu Assy

    5.1.51 LV Power Supply PU / Power Supply Bracket PU ASSY (1) Remove the setscrew (M4x6, 1 piece with star washer) of the grounding terminal. (2) Disconnect the connector of the switch harness from the LV power supply PU. (3) Remove the setscrew (ST3x6, 3 pieces) of the power supply bracket PU ASSY. (4) Remove the power supply bracket PU ASSY (with the switch).
  • Page 150: Fuser Connector Pu

    5.1.52 Fuser Connector PU (1) Remove the setscrew (ST3x6,4 pieces and BT3x8,3 pieces) of the shield base (LV). (2) Remove the shield base (LV) from the frame. (3) Remove the setscrew (M4x6, 1 pieces) of the ground wire. (4) Remove the setscrew (BT3x8 2 pieces and TS3x6, 2 pieces) of the shield base (HV). (5) Remove the shield base (LV) from the frame.
  • Page 151: Toner Retract Solenoid Pu (desly/deslm/deslc/deslk) / Toner Retract Cam Pu

    5.1.53 Toner Retract Solenoid PU (DESLY/DESLM/DESLC/DESLK) / Toner Retract Cam PU (1) Remove the harness connector of the developer retract solenoid PU. (2) Remove the setscrew (BT3x8, 2 pieces) of the developer retract solenoid PU. (3) Remove the toner retract solenoid PU and toner retract cam PU from inside of the frame. (4) Remove the toner retract cam PU from the toner retract solenoid PU (DESLY/DESLM/DESLC/DESLK).
  • Page 152: Toner Sensor Pu (ttr)

    5.1.54 Toner Sensor PU (TTR) (1) Remove the setscrew (BT3x8 and BT3x6, 1 each) of the toner sensor PU (TTR). (2) Disconnect the connector connecting to the toner sensor PU (TTR). (3) Remove the toner sensor PU (TTR) from the frame. <Confirmation Items>...
  • Page 153: Toner Present Sensor Pu

    5.1.55 Toner Present Sensor PU (1) Remove the setscrew (BT3x6, 2 pieces) of the toner present sensor PU. (2) Remove the toner present sensor PU from the frame. NOTE: When installing the toner key sensor PU, pushing the sensor to the front side and then tighten the setscrew to fix the sensor.
  • Page 154: Left Tray Guide Pu / Paper Size Sensor Pu / Room Temp Thermistor Pu

    5.1.57 Left Tray Guide PU / Paper Size Sensor PU / Room Temp Thermistor PU (1) Remove the setscrew (BT3x8, 2 pieces) of the left tray guide PU. (2) Pull out the left tray guide PU from the cassette side. (3) Disconnect the connector connecting to the paper size sensor PU.
  • Page 155: Left Toner Guide Pu

    5.1.58 Left Toner Guide PU (1) Remove the setscrew (BT4x8, 1 piece and BT3x6, 2 pieces) of the left toner guide PU. (2) Remove the left toner guide PU from the frame. Frame BT3x6 Left toner guide PU BT4x8 Fig. 5-105 5-68 Confidential...
  • Page 156: Paper Exit Unit

    5.1.59 Paper Exit Unit (1) Open the paper exit unit. (2) Remove the setscrew (BT4x20, 1 piece and collar) from the support band. (3) Remove the setscrew (ST4x6, 1 piece) from the support plate. In this instance, maintain the paper exit unit closed. (4) Open the paper exit unit and pull its right side to the backside, so that the hinge shaft can be removed from the right-side base ASSY.
  • Page 157: Transfer Roller Assy Pu

    5.1.60 Transfer Roller ASSY PU (1) Remove the transfer roller ASSY PU. Paper exit unit Transfer roller ASSY PU Fig. 5-107 5.1.61 Transfer Base ASSY PU (1) Remove the setscrew (ST3x6, 3 pieces and BT3x8, 3 pieces) of the transfer base ASSY PU. (2) Remove the transfer base ASSY PU.
  • Page 158: Registration Roller Assy Pu

    5.1.62 Registration Roller ASSY PU (1) Remove the washer, coupling gear and bearing from the registration roller ASSY PU. (2) Remove the washer and bearing of counter-coupling gear side. (3) Remove the registration roller ASSY PU from the transfer unit base. Transfer unit base Washer Bearing...
  • Page 159: Exit Guide Assy Pu / Exit Drive Assy Pu / Exit Idle Roller Assy Pu

    5.1.64 Exit Guide ASSY PU / Exit Drive ASSY PU / Exit Idle Roller ASSY PU (1) Remove the connector cover from the exit guide ASSY PU. (2) Disconnect the two connectors connecting to the exit guide ASSY PU. (3) Remove the exit guide ASSY PU by removing the setscrew (ST3x6, 2 pieces and FST3x10, 2 pieces).
  • Page 160: Paper Sensor (pful)

    (4) Remove the spring from the exit drive ASSY PU. (5) Remove the setscrew (A) (BT3x12, 1 piece and BT3x8, 1 piece) and collar of the exit drive ASSY PU. (Remove the setscrew by turning the gear holder.) (6) Remove the exit drive ASSY PU from the exit guide ASSY PU. (7) Remove the setscrew (B) (BT3x12, 1 piece) and collar of the rear cover latch arm.
  • Page 161: Exit Roller Assy Pu / Paper Exit Actuator Pu

    5.1.66 Exit Roller ASSY PU / Paper Exit Actuator PU (1) Pull out the coupling gear from the exit roller ASSY PU. (This gear is the snap-in type.) (2) Remove the actuator from the paper exit actuator PU. (3) Remove the roller shaft sagging. (This roller shaft sagging.) (4) Remove the paper exit actuator PU.
  • Page 162: Fuser Exit Actuator Pu

    5.1.67 Fuser Exit Actuator PU (1) Remove the washer. (2) Slide the fuser exit actuator PU to the arrow direction. (3) Remove the fuser exit actuator PU from the exit guide ASSY PU. Exit guide ASSY PU Fuser exit actuator PU Washer Fig.
  • Page 163: Discharging Brush Pu

    5.1.69 Discharging Brush PU (1) Remove the hinge cover. (2) Remove the setscrew (BT3x8, 2 pieces) of the shaft holder. (3) Remove the shaft holder from the exit guide ASSY PU. (4) Remove the discharging brush PU from the exit guide ASSY PU. Exit guide ASSY PU Shaft holder BT3x8...
  • Page 164: Rear Cover Latch Assy Pu

    5.1.70 Rear Cover Latch ASSY PU (1) Remove the setscrew (BT3x8, 1 piece and ST3x6, 1 piece) of the rear cover latch ASSY PU. (2) Disconnect the connection of the arm ring. (3) Remove the rear cover latch ASSY PU from the rear cover. Rear cover Rear cover latch ASSY PU ST3x6...
  • Page 165: Transfer Roller Guide Pu

    5.1.71 Transfer Roller Guide PU (1) Remove the setscrew (ST3x6, 4 pieces) of the transfer roller guide PU. (2) Remove the transfer roller guide PU from the rear cover. Rear cover ST3x6 ST3x6 Transfer roller guide PU ST3x6 Fig. 5-120 5-78 Confidential...
  • Page 166: Paper Guide (a) Pu

    5.1.72 Paper Guide (A) PU (1) Remove the setscrew (BT3x8, 2 pieces) of the paper guide (A) PU. (2) Remove the paper guide (A) PU. BT3x8 Paper guide (A) PU Fig. 5-121 5.1.73 Paper Guide (B) PU (1) Remove the setscrew (BT3x8, 2 pieces) of the paper guide (B) PU. (2) Remove the paper guide (B) PU.
  • Page 167: Paper Guide (c) Pu / Paper Sensor (pt1, Peu) / Ohp Sensor Pu / Tray Empty Actuator Pu

    5.1.74 Paper Guide (C) PU / Paper Sensor (PT1, PEU) / OHP Sensor PU / Tray Empty Actuator (1) Disconnect the connector connecting to the paper sensor (PT1). (2) Remove the setscrew (BT3x8, 2 pieces) of the paper guide (C) PU. (3) Disconnect the connector connecting to each sensor of the paper guide (C) PU.
  • Page 168: Paper Guide (d) Pu

    5.1.75 Paper Guide (D) PU (1) Remove the setscrew (BT3x8, 2 pieces) of the paper guide (D) PU. (2) Remove the paper guide (D) PU from the frame. Frame BT3x8 Paper guide (D) PU Fig. 5-124 5.1.76 Paper Feed Roller / Separator Pad (1) Sliding the paper feed roller along the shaft, remove it from the shaft.
  • Page 169: Lubrication

    5.2 LUBRICATION Apply the specified lubricants to the lubrication points as shown below. Lubricant type (Manufacturer) Lubrication points Lubricant amount Molykote EM-30LG Document pull-in roller 4 mm dia. ball (Dow Corning) Document separation roller • Document pull-in roller and Document separation roller Apply a 4mm dia.
  • Page 170: Harness Routing

    5.3 HARNESS ROUTING ADF unit ADF unit Hooks ADF motor ADF sensor PCB Hole Hole Document scanner Side cover L Insert Hole Ground wire Main PCB 5-83 Confidential manuals4you.com manuals4you.com...
  • Page 171: Cis Unit

    CIS unit Document scanner CIS flat cable CIS unit Hole Side cover L Insert Main PCB 5-84 Confidential...
  • Page 172 FB motor FB motor Document scanner Hole Side cover L Insert Hole FB motor harness Main PCB 5-85 Confidential manuals4you.com manuals4you.com...
  • Page 173: Panel Unit

    Panel unit Document scanner Panel cover ASSY Panel unit Panel harness Hole Side cover L Insert Hook Hook Hole Main PCB 5-86 Confidential...
  • Page 174: Chapter 6 Adjustments And Updating Of Settings, Required After Parts Replacement

    CHAPTER ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT Confidential manuals4you.com manuals4you.com...
  • Page 175: Required After Parts Replacement

    CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT This chapter details adjustments and updating of settings, which are required if main PCB and some other parts have been replaced. CONTENTS IF YOU REPLACE THE MAIN PCB.................6-1 6.1.1 EEPROM Customizing ..................6-1 6.1.2 EEPROM Parameter Initialization ................6-1...
  • Page 176: If You Replace The Main Pcb

    6.1 IF YOU REPLACE THE MAIN PCB 6.1.1 EEPROM Customizing For the OCEANIA (Australia and New Zealand), and EUROPE (United Kingdom, German, France, Norway, Belgium, Netherlands, Switzerland, Finland, Denmark, Spain, Italy, Portugal, Sweden, Austria, Ireland and others) versions and replacement with a new main PCB Refer to Chapter 6, Section 6.1.5.
  • Page 177: Cis Scanner Area Setting

    6.1.4 CIS Scanner Area Setting (1) Press the 5 key twice in the initial stage of the maintenance mode. The "SCANNER AREA SET" and "WHITE LEVEL INIT" appear on the LCD in this order. The machine checks and sets the area to be scanned. If no error is noted, the machine returns to the initial stage of the maintenance mode.
  • Page 178 Even country setting is set already, the customer can change the setting when the machine is turned on. The procedures below (1) Press the Menu/Set and Black Start keys. Next press the key four times to make the machine enter the maintenance mode. (2) Press the 7 and 4 keys in this order in the initial stage of the maintenance mode.
  • Page 179: Adjustment Of The Guide B Position Of Top Fuse Cover Fu

    6.2 ADJUSTMENT OF THE GUIDE B POSITION OF TOP FUSE COVER FU (1) Install the Top Fuse Cover FU with the setscrews (ST3x6, 2 pieces). (2) Loosen the Guide B setscrews (BT3x8, 2 pieces) to make the Guide B attached to the Separation Guide.
  • Page 180: Periodic Maintenance Procedures

    6.3 PERIODIC MAINTENANCE PROCEDURES Maintenance Work should be implemented according to the “Periodic Maintenance Parts and Maintenance Cycle” set out in Table 6-1. Table 6-1 Name of Replacement Part Replacement Cycle Operator OPC belt cartridge Every 60,000 images Serviceperson or Customer Fusing Unit Every 60,000 pages...
  • Page 181 (3) Open the center cover. Center cover Fig. 6-2 (4) To release the lock, push the green belt cartridge lock levers on both sides inwards. Belt cartridge lock levers Belt cartridge lock levers Fig. 6-3 (5) Remove the OPC belt cartridge from the machine. OPC belt cartridge Fig.
  • Page 182 Sequence of Assembling (1) Remove the tension release pins from both sides of the new OPC belt cartridge. Belt tension release pin Belt tension release pin Fig. 6-5 (2) Remove the protective sheet from the new OPC belt cartridge. Do not touch the green part of the OPC belt cartridge.
  • Page 183 (4) To lock the cartridge into the machine, push the belt cartridge lock levers that are on both sides of the OPC belt cartridge outwards. Belt cartridge lock levers Belt cartridge lock levers Fig. 6-8 (5) Close the center cover, and then close the scanner unit. (6) Turn the machine’s power switch back on.
  • Page 184: Replacement Of Fusing Unit

    6.3.2 Replacement of Fusing Unit <Criterion of Replacement> It is recommended to replace with a new fusing unit according to the periodic maintenance cycle listed in the Table 6-1 to maintain the satisfactory print quality. The suggested replacement timing is indicated on the control paned with the following message, “REPLACE FUSER”.
  • Page 185 (3) To release the fusing unit from the machine, release the lock levers that are on both sides of the fusing unit. Lock lever Lock lever Fig. 6-10 (4) Hold the handles on both sides as you take the fusing unit out of the machine. Fusing unit Fig.
  • Page 186 Sequence of Assembling (1) Put the new fusing unit into the machine. Be sure to insert the fusing unit completely into the machine. Fusing unit Fig. 6-12 (2) Secure the fusing unit with the two lock levers that are on both sides of the fusing unit. Lock lever Lock lever Fig.
  • Page 187: Replacement Of Transfer Roller Assy Pu (120k Kit)

    6.3.3 Replacement of Transfer Roller ASSY PU (120K KIT) <Criterion of Replacement> Transfer roller ASSY PU should be replaced with a new one according to the periodical maintenance cycle set out in the Table 6-1. When time is due for replacement of transfer roller ASSY PU, the following message appears on the LCD.
  • Page 188 Sequence of Assembling (1) Put in the new transfer roller ASSY PU by holding the lock levers of the transfer roller ASSY PU and adjusting the angle of the transfer roller lever shafts (both sides) to match the transfer unit grooves. Put the transfer roller ASSY PU onto the shafts and place the roller onto the springs as shown below: Transfer roller ASSY PU Lock levers...
  • Page 189: Replacement Of Cleaning Roller Pu (120k Kit)

    6.3.4 Replacement of Cleaning Roller PU (120K KIT) <Criterion of Replacement> Cleaning roller PU should be replaced with a new one according to the periodical maintenance cycle set out in the Table 6-1. When time is due for replacement of cleaning roller PU, the following message appears in LCD of the control panel.
  • Page 190 (4) Remove the cleaning roller cover PU. Cleaning roller cover PU Fig. 6-19 (5) Remove the cleaning roller PU by grasping the handle and lifting it up. Cleaning roller PU Fig. 6-20 Sequence of Assembling (1) Clean the area where the new cleaning roller PU is to be installed with a dry cotton cloth. (2) Put the new cleaning roller PU into the machine by gently placing the brass bearings into the guides, and then pushing the handle down until the bearings click into place.
  • Page 191: Replacement Of Paper Feed Roller And Separator Pad (120k Kit)

    6.3.5 Replacement of Paper Feed Roller and Separator Pad (120K KIT) <Criterion of Replacement> Since the paper feed roller and separator pad are defined as periodic replacement parts as per Table 6-1, they should be replaced when the feeding jam (17. MEDIA JAM FEED) occurs. The following message appears in LCD of the control panel.
  • Page 192 (6) Remove the setscrew (BT3x8, 2 pieces) from the paper guide (C) PU. (7) Remove the paper guide (C) PU. (8) Sliding the paper feed roller along the shaft, remove it from the shaft. (9) Pull out the separator pad from the frame. Paper guide (C) PU BT3x8 Paper feed roller...
  • Page 193 Sequence of Assembling (1) Set the separator pad. (2) Set the paper feed roller. (3) Secure the paper guide (C) PU with the setscrew (BT3x8, 2 pieces). Paper guide (C) PU BT3x8 Paper feed roller Separator pad Rear cover Fig. 6-24 (4) Install the paper guide (B) PU into the printer.
  • Page 194 < How to reset the 120K Kit > (1) Press the Menu/Set, Black Start, keys in this order to enter the maintenance mode. (2) Press the 8 and 0 keys in this order to indicate the LOG INFO message on the LCD, and press the Black Start key several times until the “120K_CH:”...
  • Page 195: Replacement Of Transfer Unit Pu (120k Kit)

    6.3.6 Replacement of Transfer Unit PU (120K KIT) <Criterion of Replacement> Since the transfer drum is defined as periodic replacement parts as per Table 6-1, it should be replaced when the print quality failure occurs due to failed transfer drum. The following message appears in LCD of the control panel.
  • Page 196 Sequence of Assembling (1) Install the transfer unit PU into the printer. (2) Secure the transfer unit PU with the knob screw (2 pieces). (3) Close the rear cover. Transfer unit PU Knob screws Rear cover Fig. 6-27 < How to reset the 120K Kit > (1) Press the Menu/Set, Black Start, keys in this order to enter the maintenance mode.
  • Page 197 CHAPTER CLEANING Confidential...
  • Page 198: Chapter 7 Cleaning

    CHAPTER 7 CLEANING For the cleaning procedures of the drum unit and toner cartridge, refer to the User's Guide. Confidential manuals4you.com manuals4you.com...
  • Page 199: Chapter 8 Maintenance Mode

    CHAPTER MAINTENANCE MODE Confidential...
  • Page 200 CHAPTER 8 MAINTENANCE MODE This chapter describes the maintenance mode which is exclusively designed for the purpose of checks, settings and adjustments using the keys on the control panel. You can customize the EEPROM according to the shipment destination of the machine concerned.
  • Page 201: Entry Into The Maintenance Mode

    8.1 ENTRY INTO THE MAINTENANCE MODE Press the Menu/Set and Black Start keys. Next press the key four times to make the machine enter the maintenance mode. The machine beeps for approx. one second and displays " " on the LCD, indicating that it is placed in the initial stage of the maintenance mode, a mode in which the machine is ready to accept entry from the keys.
  • Page 202: List Of Maintenance-mode Functions

    8.2 LIST OF MAINTENANCE-MODE FUNCTIONS Maintenance-mode Functions Function Reference Function Section (Page) Mode EEPROM Parameter Initialization 8.4.1 (8-4) Printout of Scanning Compensation Data 8.4.2 (8-5) Placement of CIS Unit Position for Transportation 8.4.3 (8-7) ADF Performance Test 8.4.4 (8-7) Test Pattern 1 8.4.5 (8-8) Firmware Switch Setting 8.4.6.1 (8-9)
  • Page 203: User-access To The Maintenance Mode

    8.3 USER-ACCESS TO THE MAINTENANCE MODE Basically, the maintenance-mode functions listed on the previous page should be accessed by service personnel only. However, you can allow end users to access some of these under the guidance of service personnel (e.g., by telephone). The user-accessible functions (modes 06, 09, 10, 11, 12, 52, 53, 54, 80, 82 and 87) are shaded in the table given on the previous page.
  • Page 204: Detailed Description Of Maintenance-mode Functions

    8.4 DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS 8.4.1 EEPROM Parameter Initialization (Function mode 01/91) Function The machine initializes the parameters, user switches, and firmware switches registered in the EEPROM, to the initial values. Entering the function mode 01 initializes all of the EEPROM areas, but entering 91 does not initialize some areas, as listed below.
  • Page 205: Printout Of Scanning Compensation Data (function Mode 05)

    8.4.2 Printout of Scanning Compensation Data (Function mode 05) Function The machine prints out the white and black level data for scanning compensation. Operating Procedure Do not start this function merely after powering on the equipment but start it after carrying out a sequence of scanning operation.
  • Page 206 Fig. 8-2 Scanning Compensation Data List 8 -6 Confidential manuals4you.com manuals4you.com...
  • Page 207: Placement Of Cis Unit In Position For Transportation (function Mode 06)

    8.4.3 Placement of CIS Unit in Position for Transportation (Function mode 06) Function This function is to move the CIS unit in position for transportation located at the right end. When you fix the FAX equipment and check its operation, you need to perform this function right before packing and shipping it.
  • Page 208: Test Pattern 1 (function Mode 09)

    8.4.5 Test Pattern 1 (Function mode 09) Function This function, much like the copying function, prints out test pattern 1 to allow the service personnel to check for record data missing or print quality. Operating Procedure Press the 0 and 9 keys in this order in the initial stage of the maintenance mode. The figure below shows test pattern.
  • Page 209: Firmware Switch Setting And Printout

    8.4.6 Firmware Switch Setting and Printout 8.4.6.1 Firmware switch setting (Function mode 10) Function The machine incorporates the following firmware switch functions which may be activated with the procedures using the control panel keys and buttons. The firmware switches have been set at the factory in conformity to the communications standards and modes of each country.
  • Page 210 Firmware Switches (WSW01 through WSW60) Continued WSW No. Function WSW38 V.34 transmission settings WSW39 V.34 transmission speed WSW40 V.34 modem settings WSW41 ON-duration of the scanning light source WSW42 Internet mail settings WSW43 Function setting 21 WSW44 Speeding up scanning-1 WSW45 Speeding up scanning-2 WSW46...
  • Page 211: Printout Of Firmware Switch Data (function Mode 11)

    8.4.6.2 Printout of firmware switch data (Function mode 11) Function The machine prints out the setting items and contents specified by the firmware switches. Operating Procedure (1) Press the 1 key twice in the initial stage of the maintenance mode. The "PRINTING"...
  • Page 212: Operation Check Of Lcd (function Mode 12)

    8.4.7 Operation Check of LCD (Function mode 12) Function This function allows you to check whether the LCD on the control panel works normally. Operating Procedure (1) Press the 1 and 2 keys in this order in the initial stage of the maintenance mode. The LCD shows.
  • Page 213: Operational Check Of Control Panel Pcb (function Mode 13)

    8.4.8 Operational Check of Control Panel PCB (Function mode 13) Function This function allows you to check the control panel PCB for normal operation. Operating Procedure (1) Press the 1 and 3 keys in this order in the initial stage of the maintenance mode. The "00 "...
  • Page 214: Sensor Operational Check (function Mode 32)

    8.4.9 Sensor Operational Check (Function mode 32) Function This function allows you to check whether the 9 sensors. Operating Procedure (1) Press the 3 and 2 keys in this order in the initial stage of the maintenance mode. The machine beeps 1100 Hz and 400 Hz tones cyclically through the following volumes for testing the speaker.
  • Page 215: Eeprom Customizing (entering Of The Country Code For Europe/oceania.)

    Sensors Sensing status Fusing unit sensor No fusing unit detected. OPC belt sensor No OPC belt detected. OPC roller sensor No OPC roller detected. Transfer roller sensor No transfer roller detected. (2) Change the detecting conditions to check that the indication on the LCD changes according to the sensor states.
  • Page 216: Received Data Transfer Function (function Mode 53)

    8.4.11 Received Data Transfer Function (Function mode 53) Function This function transfers received FAX data to another machine. It is useful when the machine cannot print received data due to the printing mechanism defective. NOTE: The number of files that can be transferred at a time is 99. To transfer 100 files or more, carry out the following procedure more than one time.
  • Page 217 Cover page sample End page sample Fig. 8-8 8 -1 7 Confidential...
  • Page 218: Fine Adjustment Of Scan Start/end Positions (function Mode 54)

    8.4.12 Fine Adjustment of Scan Start/End Positions (Function mode 54) Function This function is to adjust the scan start/end positions. Operating Procedure (1) Press the 5 and 4 keys in this order in the initial stage of the maintenance mode. The “SCAN START ADJ.”...
  • Page 219 MAINTENANCE 5 and 4 keys SCAN START ADJ. 2 second later 1. ADF 2. FB 1 or 2 keys select Menu/Set key Stop/Exit key MAINTENANCE Stop/Exit key MAINTENANCE Menu/Set key ACCEPTED 1 second later Fig. 8-10 8 -1 9 Confidential...
  • Page 220: Acquisition Of White Level Data And Cis Scanner Area Setting (function Mode 55)

    8.4.13 Acquisition of White Level Data and CIS Scanner Area Setting (Function mode 55) Function This function allows the machine to obtain white level data for the CIS scanner and save it together with the CIS scanner area into the EEPROM on the main PCB. Operating Procedure (1) Press the 5 key twice in the initial stage of the maintenance mode.
  • Page 221: Eeprom Customizing (direct Entering Of The Four-digit Code.) (function Mode 74)

    8.4.15 EEPROM Customizing (Function mode 74) Function This function allows you to customize the EEPROM according to language, function settings, and firmware switch settings. The customizing codes list is given in Appendix 3. NOTE: If you replace the main PCB, be sure to carry out this procedure. Operating Procedure (1) Press the 7 and 4 keys in this order in the initial stage of the maintenance mode.
  • Page 222: Display Of The Equipment's Log Information (function Mode 80)

    8.4.16 Display of the Equipment’s Log Information (Function mode 80) Function The equipment may display its log information on the LCD. Operating Procedure (1) Press the 8 and 0 keys in this order in the initial stage of the maintenance mode. The USB serial number appears on the LCD.
  • Page 223 USB: USB Serial No. CCOVERAGE: Average cyan color coverage MCOVERAGE: Average magenta color coverage YCOVERAGE: Average yellow color coverage KCOVERAGE: Average black color coverage TTL_PG: Total number of pages printed TTL_CI: Total number of cyan color pages printed TTL_MI: Total number of magenta color pages printed TTL_YI: Total number of yellow color pages printed TTL_KI:...
  • Page 224 YTNR_CH: Number of times the toner yellow color cartridge has been replaced YTNR_IMG1: Number of pages printed with the current yellow color toner cartridge YTNR_IMG2: Number of pages printed with the previous yellow color toner cartridge KTNR_CH: Number of times the toner black color cartridge has been replaced KTNR_IMG1: Number of pages printed with the current black color toner...
  • Page 225: Machine Error Code Indication (function Mode 82)

    8.4.17 Machine Error Code Indication (Function mode 82) Function This function displays an error code of the last error on the LCD. Operating Procedure (1) Press the 8 and 2 keys in this order in the initial stage of the maintenance mode. The LCD shows the "MACHINE ERROR X X."...
  • Page 226: Chapter 9 Error Indication And Troubleshooting

    CHAPTER ERROR INDICATION AND TROUBLESHOOTING Confidential manuals4you.com manuals4you.com...
  • Page 227 CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING This chapter details error messages and codes that the incorporated self-diagnostic functions display if any error or malfunction occurs. If any error message appears, refer to this chapter to find which components should be checked or replaced. The latter half of this chapter provides sample problems that could occur in the main sections of the machine and related troubleshooting procedures.
  • Page 228: Error Indication

    9.1 ERROR INDICATION To help the user or the service personnel promptly locate the cause of a problem (if any), the facsimile equipment incorporates the self-diagnostic functions which display error messages for equipment errors and communications errors. For the communications errors, the equipment also prints out the transmission verification report and the communications list.
  • Page 229 Specify the correct media type in the paper tray. paper tray. Replace 120K Kit It is time to replace the 120K kit. Call Brother customer service to replace the 120K kit. Replace Fuser It is time to replace the fusing unit. Replace the fusing unit.
  • Page 230 ERROR MESSAGE CAUSE ACTION Replace PF Kit2 It is time to replace the PF kit2. Call Brother customer service to replace the PF kit2. Size Error Tray2 The wrong size of paper is set in In the printer driver, specify the the printer driver for tray2.
  • Page 231 ERROR MESSAGE CAUSE ACTION Out of Memory The machine’s memory is full. (Fax sending or copy operation in progress) Press Black Start or Color Start to send or copy the scanned pages. -OR- Press Stop/Exit and wait until the other operations in progress have finished and then try again.
  • Page 232 [ 2 ] Error codes shown in the "MACHINE ERROR X X" message Error Code Symptom Probable Cause Solution (Hex) Connector LCN3 dose Laser power error Connect the connector not properly connected properly. Laser unit defective Replace the laser unit Engine controller board Replace the engine defective...
  • Page 233 Error Code Symptom Probable Cause Solution (Hex) Charge HV unit error HV Power Supply Replace the HV Power defective Supply PCB defective I/O board LVPS error. Replace the I/O board LV Power Supply Replace the LV Power defective Supply PCB thermistor Replace the fuser unit Fuser...
  • Page 234 Error Code Symptom Probable Cause Solution (Hex) Yellow switching clutch error Yellow switching Replace the yellow clutch defective switching clutch defective I/O board Replace the I/O board Engine controller board Replace the engine defective controller board. Magenta switching clutch error Magenta switching Replace the magenta clutch defective...
  • Page 235 Error Code Symptom Probable Cause Solution (Hex) Black switching solenoid error Toner cartridge Replace the toner defective cartridge Toner retract solenoid Replace the toner retract assy defective solenoid assy Replace the I/O board I/O board defective Engine controller board Replace the engine defective controller board.
  • Page 236 Error Code Symptom Probable Cause Solution (Hex) Cyan toner empty The cyan toner cartridge Replace the cyan toner is empty. cartridge with a new one. Magenta toner empty The magenta toner Replace the magenta toner cartridge is empty. cartridge with a new one. Yellow toner empty The yellow toner Replace the yellow toner...
  • Page 237 Error Code Symptom Probable Cause Solution (Hex) Waste toner box full or The waste toner box is Assemble the waste toner un-device not assembled. box. The waste toner box is Replace the waste toner full. box with a new one. OPC belt exchange Replacement timing of Replace the OPC belt with...
  • Page 238 Error Code Solution Symptom Probable Cause (Hex) Recording paper jam. The paper ejection Replace the paper ejection (The registration sensor stays roller. roller does not rotate ON after completion of paper correctly ejection operation.) Foreign materials in the Remove foreign materials. paper path.
  • Page 239 Error Code Symptom Probable Cause Solution (Hex) Front cover (scanner unit) Hook of the front open Replace the front cover. opened. switch on the front cover broken Front open switch Replace the front open broken switch. Document length exceeding Document jam Remove the jammed the scan limitation.
  • Page 240 Error Code Symptom Probable Cause Solution (Hex) CIS positioning error. CIS flat cable broken or Correct the cable not connected connection. Replace the scanner cover (scanner unit). CIS motor harness not Correct the harness connected properly connection. CIS defective Replace the scanner cover (scanner unit).
  • Page 241 Error Code Symptom Probable Cause Solution (Hex) D0-DF Modem error. Main PCB defective Replace the main PCB. E0-E3 Not used. Out of recording paper. (Not used.) Not used. Write error in EEPROM. Main PCB defective Replace the main PCB. Not used. Data scanning error during CIS defective Replace the scanner cover...
  • Page 242: Communications Errors

    9.1.2 Communications Errors If a communications error occurs, the facsimile equipment (1) emits an audible alarm (intermittent beeping) for approximately 4 seconds, (2) displays the corresponding error message, and (3) prints out the transmission verification report if the equipment is in sending operation. Definition of error codes on the communications list Calling Code 1...
  • Page 243 Compatibility [checking the NSF and DIS] Code 1 Code 2 Causes Remote terminal only with V.29 capability in 2400 or 4800 bps transmission. Remote terminal not ready for polling. Remote terminal not equipped with password function or its password switch OFF. Remote terminal not equipped with or not ready for confidential mailbox function.
  • Page 244 Command reception [checking the NSF and DIS after transmission of NSS and DCS] Code 1 Code 2 Causes Vertical resolution capability changed after compensation of background color. ID checking Code 1 Code 2 Causes Password plus "lower 4 digits of telephone number" not coincident.
  • Page 245 (10) Video signal reception Code 1 Code 2 Causes Error correction sequence not terminated even at the final transmission speed for fallback. Receive buffer empty. (5-second time-out) Receive buffer full during operation except receiving into memory. Decoding error continued on 500 lines. Decoding error continued for 10 seconds.
  • Page 246: Troubleshooting

    9.2 TROUBLESHOOTING 9.2.1 Introduction This section gives the service personnel some of the troubleshooting procedures to be followed if an error or malfunction occurs with the facsimile equipment. It is impossible to anticipate all of the possible problems which may occur in future and determine the troubleshooting procedures, so this section covers some sample problems.
  • Page 247: Troubleshooting Based On Problem Type

    9.2.4 Troubleshooting Based on Problem Type [ 1 ] Software setting problems The machine may not print the data correctly if there are incorrect software settings. “There was an error writing to LPT1: (or BRUSB) for the machine” error message appears.
  • Page 248 Although the USB driver is installed, it is unable to find the BRUSB: port. (Windows98/Me only) User Check (1) Re-install the USB driver by following the steps below; Turn the machine off. ii) Double-click the file “Deins USB.exe” in the USB directory of the CD-ROM. iii) Re-boot the PC.
  • Page 249 Turn off the machine and PC <For System 9.1 – 9.2> power switch, and check all • BR_PrintMoniter (laser) connections between them. • Brother Laser Then, turn them on again. ® Make sure that the supplied Macintosh printer driver is installed in the hard disk ®...
  • Page 250: 2 ] Image Failure

    [ 2 ] Image failure [10] [11] [12] [13] [14] 9 - 2 3 Confidential manuals4you.com manuals4you.com...
  • Page 251 [15]-a [15]-b [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] Fig. 9-1 9 - 2 4 Confidential...
  • Page 252 Background Phenomenon Background is smeared due to toner spread as shown in print sample [1] of Fig.9-1. Main Causes (1) Too small charging amount in the development process. (2) Insufficient contact of the developer roller's bias pole. (3) Life or failure of the belt cartridge PU. (4) Failure of the HV power supply unit PU (HVU).
  • Page 253 Missing Image at Edge Phenomenon There is missing or peeling toner found in the image at the edge as shown in the print sample [2] of Fig.9-1. Main Causes (1) Too small toner mass amount and charging amount in the development process. (2) The OPC belt is deformed as waving.
  • Page 254 Jitter Phenomenon Uneven optical density appears periodically in the horizontal direction on the printed image as shown in print sample [3] of Fig.9-1. Main Causes (1) Failure of main motor. Irregular rotation of the drive motor. Failure of the OPC drive gear ASSY PU. Variation of OPC belt running speed due to above reasons.
  • Page 255 Ribbing Phenomenon Light print occurs on the right or left hand side of the image as shown in print sample [4] of Fig.9-1. Main Causes (1) Slight tilt on the surface of machine installation table. (Tilt should be less than 1°.) (2) Toner amount in the toner cartridge PU is insufficient.
  • Page 256 Wrinkle / Image Migration Phenomenon Banding shadows of different optical density appear due to the wrinkle, image migration and color misregistration occurring on the print paper as shown in print sample [5] of Fig.9-1. Main Causes (1) Paper in use is not a recommended paper, or is an abandoned paper. (2) The rear cover ASSY PU is not locked properly.
  • Page 257 White Line (1) Phenomenon Vertical white line appears in the specific color area when test-printed in the four color mode (Stripe Mode), as shown in print sample [6] of Fig.9-1. Main Causes (1) Foreign particles adhere to developer roller of specific color in question. (2) Developer roller’s surface is damaged.
  • Page 258 White Line (2) Phenomenon Vertical white line appears from the leading edge to the trailing edge of printed image as shown in print sample [7] of Fig.9-1. Main Causes (1) Dustproof glass of laser ASSY PU is smeared with toner or foreign particles. (2) Hairy foreign particles adhere to the laser beam opening of laser ASSY PU.
  • Page 259 Vertical White Band Phenomenon White band appears in the vertical direction of printed image as shown in print sample [8] of Fig.9-1. Main Causes (1) Failure of the toner cartridge PU (blade). (2) Stain of the OPC charger roller PU. (3) Stain of the OPC belt.
  • Page 260 Black Line Phenomenon Fine black line appears in the printed image as shown in print sample [9] of Fig.9-1. Main Causes (1) The toner cartridge PU blade is deformed. (2) The OPC belt surface is damaged. (3) Foreign particles (paper dust, etc.) are stuck in between the cleaning blade and the OPC belt. (4) Foreign particles adhere to the perimeter parts of the OPC belt and the transfer belt, and consequently contact the toner image formed on the belt.
  • Page 261 I-10 Vertical Line Phenomenon Vertical line appears in the printed image as shown in print sample [10] of Fig.9-1. Main Causes (1) Foreign particles (dust, etc.) adhere to the parts located around the OPC belt and the transfer belt, and consequently contact the toner image formed on the belt surface. Cleaning roller PU Cleaning roller Cleaning brush...
  • Page 262 I-11 Vertically Staggered Image Phenomenon Printed image staggered in the vertical direction as shown in print sample [11] of Fig.9-1. Main Causes (1) Shock or vibration is applied to the machine. (2) Failure of the laser ASSY PU : Vibration from the rotation of scanner motor. Laser ASSY PU Cover C Front cover unit PU...
  • Page 263 I-12 Banding Phenomenon Banding line appears in the horizontal direction as shown in print sample [12] of Fig.9-1. Main Causes This is a transfer failure due to the uneven rotational speed caused by the shock which occurs when the seam of OPC belt passes over the cleaning blade. The OPC belt and the transfer belt fail to maintain the regular and proper rotation due to the impact caused during the retract of the toner cartridge.
  • Page 264 I-13 White Band Phenomenon White banding line appears in the horizontal direction, and consequently causes a missing image as shown in print sample [13] of Fig.9-1. Main Causes (1) Deformation of the transfer roller. (2) Contact failure of the transfer roller's bias terminal. (3) Failure of the transfer roller clutch PU.
  • Page 265 I-14 Toner Drop Phenomenon Toner spot stain is caused on the print by toner dropping within the machine engine as shown in print sample [14] of Fig.9-1. Main Causes (1) Toner drops on the transfer belt due to the breakdown of the waste toner auger. 1) Mylar of the waste toner auger is deformed.
  • Page 266 I-15 White Spot / Black Spot Phenomenon White spots and black spots appear on the print as shown in print sample [15] of Fig.9-1. Main Causes (1) Foreign particles adhere to the OPC belt or the transfer belt. (2) The OPC belt or the transfer belt is damaged. (3) Foreign particles mixed in the toner.
  • Page 267 I-16 Mixed Color Image Phenomenon Mixed color image appears in the print as shown in print sample [16] of Fig.9-1. Main Causes (1) Retract error of the toner cartridge PU. (2) Retract error of the transfer roller ASSY PU. (3) Retract error of the transfer belt cleaning roller PU. Belt cartridge PU Cleaning roller PU Toner cartridge PU...
  • Page 268 I-17 Color Misregistration Phenomenon Color misregistration is caused between two colors as shown in print sample [17] of Fig.9-1. Main Causes (1) The OPC belt off-track error. (2) The OPC belt fails to maintain the regular and proper rotation due to the impact caused when the toner cartridge contacts the OPC belt.
  • Page 269 I-18 Mottle Phenomenon Variation of the optical density is found in the image as shown in print sample [18] of Fig.9-1. Main Causes (1) The rear cover ASSY is not fixed in place. (2) Installation of the transfer roller is not accurate. (3) THV output of DC high voltage unit is not normal.
  • Page 270 I-19 Residual Image Phenomenon Image of the preceding page appears on every other page as shown in print sample [20] of Fig.9-1. Main Causes (1) Cleaning failure due to the lifted cleaning brush of the transfer unit cleaner. (2) Contact failure of the belt cleaner's bias terminal. (3) Failure of HV power supply unit PU.
  • Page 271 I-20 Insufficient Gloss Phenomenon Gloss of the print is not sufficient as shown in print sample [20] of Fig.9-1. Main Causes (1) The fuser roller is deteriorated. (2) The fusing temperature is not properly controlled. (3) The mode setting of the paper is not correct. Fusing Unit FU Fig.
  • Page 272 I-21 Back Stain Phenomenon Back side of the print paper is stained as shown in print sample [21] of Fig.9-1. Main Causes (1) Fusing unit: 1) The fuser roller and the back-up roller is stained. (Print immediately after the inner jam occurred.) 2) Fusing off-set error occurred.
  • Page 273 I-22 White Print Phenomenon A blank page (no print at all) is output or a specific color is missing (not printed) as shown in print sample [22] of Fig.9-1. Main Causes (1) The laser beam path is shielded by the paper. (2) The toner cartridge is not sufficiently pressed in.
  • Page 274 I-23 Insufficient Fusing Phenomenon Printed image is partially missing as shown in print sample [23] of Fig.9-1. This proves that the fusing is insufficient. Main Causes (1) The fuser tension-release lever is open. The shipping pieces are not removed. (2) Wrong selection of print media (label or envelope, etc.) at the host (driver) side. (3) Recommended paper is not being used.
  • Page 275 I-24 Uneven Density (Right & Left) Phenomenon The optical density is different between the right and left side of the printed image. Main Causes (1) The amount of toner in the toner cartridge PU is short. (2) The retract operation of the toner cartridge PU is not properly done. (3) The belt of the toner cartridge PU is deformed.
  • Page 276 I-25 Horizontal white line Phenomenon White line appears in the horizontal direction, as shown in print sample [25] of Fig.9-1. Main Causes (1) There is a crack at the end of the OPC belt. Crack at the end Crack at the end OPC Belt OPC Belt Charge brush...
  • Page 277: Paper Transport Error

    [ 3 ] Paper transport error Paper is transported through the path shown in Fig.9-27. Paper jams at the following locations are easily cleared. • Paper Feeding Part • Fuser Part • Transfer Part • Paper Exiting Part Belt cartridge PU Paper exit roller ASSY PU Top cover PU Cleaning roller PU...
  • Page 278 (2) Inner Jam Problem item Check item Result Corrective action Open the rear cover assy PU for check. Is there any paper inside the Remove the paper inside. Transportation Part unit? Is the transfer roller firmly Fix the transfer roller with locked by the lock lever? the lock lever.
  • Page 279: Incorrect Printout

    [ 4 ] Incorrect printout When the data is not printed correctly as it is seen on the PC screen, follow the procedures below in the event of a specific error. The machine prints unexpectedly or it prints garbage. User Check (1) Check if the printer cable is not too long.
  • Page 280 Unable to print full pages of a document with the “MEMORY FULL” message. User Check (1) Press the Start key on the control panel to print the data remaining in the machine. (2) Reduce the complexity of your document or reduce the machine resolution. NOTE: This problem may appear if the data is too complex.
  • Page 281: Network Problem

    1. Make sure that the machine is powered on, is on-line and ready to print. 2. Check to see if there is any LED activity. Brother print servers have two LEDs on the back panel of the machine. The upper side LED shows link status. The lower side LED shows activity (Receive/Transmit) status.
  • Page 282 (5) Make the following selection. Make sure that your print server appears. If it is visible, then the connection is good. Otherwise, go to Step 5. 5. If you have tried 1 to 4 above and it does not work, then reset the print server back to the default factory settings and try from the initial setup again.
  • Page 283 (1) From the Apple menu, open the Chooser. (2) Click the Brother Laser (IP) icon, and make sure that your print server name appears in the right frame. If it is visible, then the connection is good. Otherwise, go to Step (4).
  • Page 284 If you are having trouble printing on a Windows 95/98/Me, Windows NT 4.0 or later Peer-to-Peer network (NetBIOS), check the following: 1. Make sure that the Brother NetBIOS Port driver is correctly installed and configured according ® ® to the Windows 95/98/Me or Windows NT 4.0 Peer-to-Peer (NetBIOS) chapters.
  • Page 285: Troubleshooting Of The Control Panel

    [ 6 ] Troubleshooting of the control panel Nothing is displayed on the LCD. User Check (1) Verify if the power switch is turned off. Possible cause Step Check Result Remedy Connection Main PCB and Fix the connector properly. between main control panel PCB PCB and control are properly...
  • Page 286 The control panel does not work. User Check (1) No Possible cause Step Check Result Remedy Key sticking Any key on control Clean up the panel cover, or panel is stuck. remove the burrs from panel cover and panel keys. Connection Main PCB and Fix the connection properly.
  • Page 287: Troubleshooting Of Fax Functions

    [ 7 ] Troubleshooting of fax functions FAX can't send it. User Check (1) Verify that the telephone cord is securely inserted. Possible cause Check Remedy Step Result Dialing mode Dialing signal (PB or Check the dialing mode setting setting DP) comes out at customer's again.
  • Page 288 Speed dialing and One-touch dialing can't be used. Possible cause Check Remedy Step Result Speed dialing, A fax transmission can Replace the main PCB. One-touch dialing be made using the key, ten? Dialing mode Dialing signal (PB or Check the dialing mode setting setting DP) comes out normally at customer's again.
  • Page 289 FAX can't be received. User Check (1) Verify that the telephone cord is securely inserted. Possible cause Check Remedy Step Result Receive mode Receive mode is set to Set the receive mode to setting automatic receive mode. automatic receive mode. NCU PCB Replacement of NCU Replace the NCU PCB with a...
  • Page 290 Speaker is silent during on-hook dialing. Possible cause Check Remedy Step Result Connection Main PCB and speaker Fix the connection properly. between main are properly connected. PCB and speaker Speaker Replacement of speaker Replace the speaker with a solves the problem. normal part.
  • Page 291 MFC-9420CN APPENDIX 1. SERIAL NUMBERING SYSTEM This appendix shows the location of serial number labels put on some parts and lists the coding information pertaining to the serial numbers. Confidential...
  • Page 292 SERIAL NUMBERING SYSTEM Individual machines have a serial number label for the machine itself and a property label for the head/carriage unit. This section lists the coding information for those serial numbers and property codes. [ 1 ] Serial No. Descriptions The descriptions as below show how to read labels on each place.
  • Page 293 (2) Toner Cartridge [Label 1] P 1 2 4 – C MONTH (Cartridge) Color DATE (Cartridge) [Label 2] BR 2 2 1 2 4 X X X X - C 5 Color YEAR (Toner) MONTH (Toner) Revision No. Factory Use MONTH (Cartridge) DATE (Cartridge) <Location>...
  • Page 294 (3) OPC Belt Cartridge [Until the 30 of August, 2004] C 1 2 X X X X FACTORY NO. REVISION NO. YEAR (Belt) DATE (Cartridge) MONTH (Belt) MONTH (Cartridge) [From the 31 of August, 2004] H T C 1 2 X X X X FACTORY NO.
  • Page 295 (4) Fusing Unit XXXX 7 1 2 3 A REV.(-, A - Z) VOLTAGE (100V, 120V, 240V) DATA YEAR MONTH <Location> (5) Scanner Unit 7 1 2 3 A REV.(-, A - Z) YEAR DATA MONTH <Location> App. 1-4 Confidential...
  • Page 296 (6) Transfer Unit X X X X X X - 7 1 2 3 SERIAL NO. YEAR DATE MONTH <Location> Confidential App. 1-5 manuals4you.com manuals4you.com...
  • Page 297 MFC-9420CN APPENDIX 2. FIRMWARE INSTALLATION This appendix provides instructions on how to update firmware stored in the flash ROM on the main PCB or load firmware to a new main PCB from the host PC. No hardware replacement is required for updating.
  • Page 298 A2.1 INSTALLING THE UPDATE DATA TO THE MACHINE If you want to update the current program stored in the flash ROM of the main PCB to the newer version or after you replace the main PCB, install the update program onto the flash ROM. The program installation requires a PC/AT-compatible computer (which is capable of running MS-DOS or its compatible OS).
  • Page 299 Installing the Update Data onto the Flash ROM of the Machine On a PC running Windows 95 (1) Copy the update data and transfer utility onto the desired same directory of the hard disk. e.g., C:\UPDATE (2) Click the Black Start button, point to Programs, and then click MS-DOS Prompt to open an MS-DOS window.
  • Page 300 If you use USB cable Preparation You need to have the BHL2-Maintenance Printer driver and FILEDG32.exe (provided by Brother Industries) on hand. Save them in an arbitrary folder in your PC. Installing the BHL2-Maintenance Printer driver To identify terminals connected via USB interface, a PC requires the corresponding virtual USB devices to be implemented by driver/software.
  • Page 301 (6) The following screen appears, indicating the detection of new hardware device by the system. Click Next to proceed. (7) Select "Search for a suitable driver for my device (recommended)" and click Next. (8) Select "Specify a location" and click Next. Ap p .
  • Page 302 (9) Select the folder where the copy of the BHL2-Maintenance Printer driver is located (or click Browse to specify it), then click OK. (This sample screen is captured on the Windows 2000 desktop.) (10) Click Next. (11) To proceed, click Yes. Ap p .
  • Page 303 "Found New Hardware Wizard" screen in step (6) appears again. Click Cancel. NOTE: To check that the printer driver is successfully installed, click Start|Settings|Printers to call up the Printers window as shown below and confirm that the Brother BHL2-Maintenance Printer icon is displayed.
  • Page 304 Writing the update programs/data onto the flash ROM of the machine After the installation procedure of the printer driver, proceed to the firmware writing operation. If the printer driver has been installed so that you start from writing firmware, unplug the power cord from the electrical outlet.
  • Page 305 (* ID codes are essential when more than one machine is connected to a single PC via USB.) Please check the printer driver of MFC-9420CN is installed in a host computer before working. When not installed. Please install a printer driver in a host computer before working.
  • Page 306 MFC-9420CN APPENDIX 3. CUSTOMIZING CODES ACCORDING TO SHIPPING DESTINATION This appendix lists the customizing codes for the various preferences exclusively designed for each destination (e.g. language). Those codes are stored in the memory (EEPROM) mounted on the main PCB. If the main PCB is replaced with a new one, therefore, you will need to set the proper customizing codes with the machine in the maintenance mode.
  • Page 307: Operating Procedure

    EEPROM CUSTOMIZING CODES This function allows you to customize the EEPROM according to language, function settings, and firmware switch settings. Operating Procedure (1) Press the Menu/Set and Black Start keys. Next press the key four times to make the machine enter the maintenance mode.
  • Page 308 MFC-9420CN APPENDIX 4. FIRMWARE SWITCHES (WSW) This appendix describes the functions of the firmware switches, which can be divided into two groups: one is for customizing preferences designed for the shipping destination (as described Appendix 3) and the other is for modifying preferences that match the machine to the environmental conditions.
  • Page 309 WSW No. Function Refer to: WSW01 Dial pulse setting App. 4-3 WSW02 Tone signal setting App. 4-4 WSW03 PABX mode setting App. 4-5 WSW04 TRANSFER facility setting App. 4-6 WSW05 1st dial tone and busy tone detection App. 4-7 WSW06 Redial/Pause key setting and 2nd dial tone detection App.
  • Page 310 WSW No. Function Refer to: WSW38 V.34 transmission settings App. 4-42 WSW39 V.34 transmission speed App. 4-43 WSW40 V.34 modem settings App. 4-44 WSW41 ON-duration of the scanning light source App. 4-46 WSW42 Internet mail settings App. 4-47 WSW43 Function setting 21 App.
  • Page 311 WSW01 (Dial pulse setting) Selector Function Setting and Specifications No. 1 2 Dial pulse generation mode 10-N No. 3 4 60 ms Break time length in pulse dialing 67 ms 40 ms (for 16 PPS) 64 ms (at 106-ms intervals) No.
  • Page 312 Selector 7: Switching between pulse (DP) and tone (PB) dialing, by the function switch This selector determines whether or not the dialing mode can be switched between the pulse (DP) and tone (PB) dialing by using the function switch. Selector 8: Default dialing mode, pulse (DP) or tone (PB) dialing This selector sets the default dialing mode (pulse dialing or tone dialing) which can be changed by the function switch.
  • Page 313 WSW03 (PABX* mode setting) Selector Function Setting and Specifications CNG detection when sharing a modular wall socket with a 0: A 1: B telephone No. 2 3 4 0 0 0 : 50 ms 0 0 1 : 210 ms Detection time length of 0 1 0 : 500 ms...
  • Page 314 Selectors 6 and 7: Dial tone detection in PABX (Not used.) These selectors activate or deactivate the dial tone detection function which detects a dial tone when a line is connected to the PABX. Setting both 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.
  • Page 315 Selector 4: Dual tone detection sensitivity in ICM recording Setting this selector to "1" increases the tone detection sensitivity in ICM recording. Selectors 5 and 6: Earth time length for earth function (Not used.) These selectors set the short-circuiting time length of the telephone line (La or Lb) to ground. This setting is effective only when the earth function is selected for the R key by using the function switch.
  • Page 316 Selectors 1 through 3: 1st dial tone detection These selectors activate or deactivate the 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.
  • Page 317 WSW06 (Redial/Pause key setting and 2nd dial tone detection) Selector Function Setting and Specifications 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 sec.
  • Page 318 Selectors 1 through 3: Redial/Pause key setting and 2nd dial tone detection Selectors No WAIT is inserted even if the Redial/Pause key is pressed. If you press the Redial/Pause key during dialing, the machine will insert WAIT as defined in the above table. If the Redial/Pause key is pressed repeatedly, the machine inserts the specified WAIT multiplied by the number of depressions.
  • Page 319 WSW07 (Dial tone setting 1) Selector Function Setting and Specifications No. 1 2 : Narrows by 10 Hz Dial tone frequency band control : Initial value : Widens by 10 Hz Line current detection 0: No 1: Yes (Not used.) No.
  • Page 320 WSW08 (Dial tone setting 2) Selector Function Setting and Specifications No. 1 2 3 0 0 0 : 50 ms 0 0 1 : 210 ms 0 1 0 : 500 ms 1st dial tone detection time 0 1 1 : 800 ms length 1 0 0 :...
  • Page 321 WSW09 (Protocol definition 1) Selector Function Setting and Specifications Frame length selection 256 octets 1: 64 octets Use of non-standard Allowed 1: Prohibited commands No. 3 4 times No. of retries 3 times 2 times 1 time T5 timer 0: 300 sec. 60 sec.
  • Page 322 WSW10 (Protocol definition 2) Selector Function Setting and Specifications Not used. Time length from transmission of the last dial digit to CML 0: 100 ms 1: 50 ms Time length from CML ON to 0: 2 sec. 1: 4 sec. CNG transmission Time length from CML ON to CED transmission (except for...
  • Page 323 WSW11 (Busy tone setting) Selector Function Setting and Specifications No. 1 : Narrows by 10 Hz Busy tone frequency band control : Initial value : Widens by 10 Hz 1: 250-750/250-750 ms 1: 400-600/400-600 ms ON/OFF time length ranges 1: 175-440/175-440 ms for busy tone (More than one setting 1: 100-1000 ms/17-660 ms...
  • Page 324 WSW12 (Signal detection condition setting) Selector Function Setting and Specifications No. 1 1500 ms Min. detection period required 500 ms for interpreting incoming calling signal (CI) as OFF 700 ms 900 ms No. 3 6 sec. Max. detection period for incoming calling signal (CI) 7 sec.
  • Page 325 WSW13 (Modem setting) Selector Function Setting and Specifications No. 1 0 km Cable equalizer 1.8 km 3.6 km 5.6 km No. 3 -43 dBm Reception level -47 dBm -49 dBm -51 dBm 0: 0 dB 1: 8 dB 0: 0 dB 1: 4 dB Modem attenuator 0: 0 dB...
  • Page 326 WSW14 (AUTO ANS facility setting) Selector Function Setting and Specifications No. 1 13 Hz Frequency band selection (lower limit) for incoming calling signal 15 Hz (CI) 23 Hz 20 Hz No. 3 30 Hz Frequency band selection (upper limit) for incoming calling signal 55 Hz (CI) 70 Hz...
  • Page 327 WSW15 (REDIAL facility setting) Selector Function Setting and Specifications No. 1 5 minutes Redial interval 1 minute 2 minutes 3 minutes No. 3 16 times 1 times No. of redialings 2 times 3 times 15 times Not used. CRP option 0: Disable 1: Enable Selectors 1 through 6:...
  • Page 328 WSW16 (Function setting 1) Selector Function Setting and Specifications Not used. ITU-T (CCITT) superfine 0: OFF 1: ON recommendation Not used. Max. document length 0: 400 cm 1: 90 cm limitation Stop/Exit key pressed during 0: Not functional 1: Functional reception NOTE: Selector 7 is applicable to models equipped with ADF units.
  • Page 329 WSW17 (Function setting 2 Selector Function Setting and Specifications No. 1 No alarm Always valid Off-hook alarm Valid except when 'call reservation' is selected. Not used. Calendar clock type U.S.A. type 1: European type Not used. Non-ring reception 1: ON Not used.
  • Page 330 WSW18 (Function setting 3) Selector Function Setting and Specifications Not used. No. 2 40 sec. Detection enabled time for CNG 0 sec. (No detection) and no tone 5 sec. 80 sec. Not used. Registration of station ID Permitted Prohibited No. 7 No monitoring Up to phase B at the Tone sound monitoring...
  • Page 331 WSW19 (Transmission speed setting) Selector Function Setting and Specifications No. 1 First transmission speed choice No. 4 for fallback 2,400 bps 4,800 bps 7,200 bps 9,600 bps 12,000 bps Last transmission speed choice for fallback 14,400 bps V.34 mode 0: Permitted 1: Prohibited V.17 mode 0: Permitted...
  • Page 332 WSW20 (Overseas communications mode setting) Selector Function Setting and Specifications EP* tone prefix 0: OFF 1: ON Overseas communications 0: 2100 Hz 1: 1100 Hz mode (Reception) Overseas communications 0: OFF 1: Ignores DIS once. mode (Transmission) No. 4 100 ms Min.
  • Page 333 Selectors 8: Limitation on CNG detection If this selector is set to "1," the machine detects a CNG signal according to the condition preset by selectors 2 and 3 on WSW18 after a line is connected. If it is set to "0," the machine detects a CNG signal as long as the line is connected.
  • Page 334 WSW22 (ECM and call waiting caller ID) Selector Function Setting and Specifications ECM* in sending 0: ON 1: OFF ECM* in receiving 0: ON 1: OFF Call Waiting Caller ID 0: ON 1: OFF Not used. 0: 0% 1: 8% Acceptable TCF bit error rate (%) 0: 0% 1: 4%...
  • Page 335 WSW23 (Communications setting) Selector Function Setting and Specifications 0: From the head of a series of zeros Starting point of training check (TCF) 1: From any arbitrary point No. 2 Allowable training error rate 0.5% No. 4 Decoding error rate for transmission of RTN Not used.
  • Page 336 WSW24 (TAD setting 2) Selector Function Setting and Specifications 15 sec. Maximum OGM recording 20 sec. time 30 sec. 50 sec. 4 sec. Time length from CML ON to start of pseudo ring 3 sec. backtone transmission 2 sec. 1 sec. Attenuator for playback of 0 dB 8 dB...
  • Page 337 WSW25 (TAD setting 3) Selector Function Setting and Specifications Not used. No. 5 2 sec. 4 sec. 6 sec. Pause between paging number 8 sec. and PIN 10 sec. 12 sec. 14 sec. 16 sec. Not used. NOTE: Selectors 5 through 7 are applicable to the U.S.A. models only. Selectors 5 through 7: Pause between paging number and PIN These selectors set the pause time between a telephone number being paged and PIN (personal...
  • Page 338 WSW26 (Function setting 4) Selector Function Setting and Specifications Not used. Dialing during document reading into the temporary 0: Disable 1: Enable memory in in-memory message transmission No. of CNG cycles to be No. 4 detected (when the line is connected via the external telephone except in the external TAD mode or via the built-in telephone)
  • Page 339 WSW27 (Function setting 5) Selector Function Setting and Specifications Not used. Ringer OFF setting 0: Yes 1: No Automatic playback of OGM when 0: No 1: Yes switched to the TAD mode Detection of distinctive ringing 0: Yes 1: No pattern (Not used.) Recording quality...
  • Page 340 WSW28 (Function setting 6) Selector Function Setting and Specifications No. 1 2 3 0 0 0 0 dB 0 0 1 +1 dB 0 1 0 +2 dB Transmission level of DTMF 0 1 1 +3 dB high-band frequency signal 1 0 0 0 dB 1 0 1...
  • Page 341 WSW29 (Function setting 7) Selector Function Setting and Specifications No. 1 2 3 0 0 0 -47.0 dBm (A) 0 0 1 -48.5 dBm (B) Compression threshold level 0 1 0 -50.0 dBm (C) for voice signals inputted via 0 1 1 -51.5 dBm (D) the telephone line in the built- 1 0 0...
  • Page 342 WSW30 (Function setting 8) Selector Function Setting and Specifications No. 1 2 3 0 0 0 -38.0 dBm (A) 0 0 1 -39.5 dBm (B) 0 1 0 -41.0 dBm (C) Dial tone/busy tone detection level during recording of ICM 0 1 1 -42.5 dBm (D) (Not used.)
  • Page 343 WSW31 (Function setting 9) Selector Function Setting and Specifications Not used. Default reduction rate for failure of automatic reduction 0: 100% 1: 70% during recording Not used. (Do not disturb this selector.) Minimum ON and OFF duration of ringer signals 0: 130 ms 1: 90 ms effective in distinctive ringing...
  • Page 344 WSW32 (Function setting 10) Selector Function Setting and Specifications Not used. No. 5 Standard Default resolution Fine Super fine Photo No. 7 Automatic Default contrast Super light Super dark Selectors 5 and 6: Default resolution These selectors set the default resolution which applies when the machine is turned on or completes a transaction.
  • Page 345 WSW33 (Function setting 11) Selector Function Setting and Specifications No. 1 2 3 0 0 0 : -42.5 dBm (A) 0 0 1 : -44.0 dBm (B) 0 1 0 : -45.5 dBm (C) Detection threshold level of "no 0 1 1 : -47.0 dBm (D) tone"...
  • Page 346 WSW34 (Function setting 12) Selector Function Setting and Specifications No. 1 0 sec. Erasing time length of ICM 1 sec. tone recorded preceding the 2 sec. tone detection starting point in 3 sec. the case of automatic line 4 sec. disconnection due to no voice 5 sec.
  • Page 347 WSW35 (Function setting 13) Selector Function Setting and Specifications No. 1 2 3 4 0 0 0 0 : No detection 0 0 0 1 : 1 sec. Max. detection period of dial tone/busy tone during recording of 0 0 1 0 : 2 sec.
  • Page 348 WSW36 (Function setting 14) Selector Function Setting and Specifications ECP mode* 0: ON (Not used.) Recovery from Inactive PC Interface 0: Disable Enable (Not used.) PC Power-off Recognition Time 0: Normal Long (Not used.) Not used. Escape from phase C 0: Yes No.
  • Page 349 Selectors 6 through 8: Extension of incoming calling signal (CI) frequency band specified by selectors 1 through 4 on WSW14 At the start of reception, if the machine detects the frequency of a CI signal specified by selectors 1 through 4 on WSW14, it starts the ringer sounding. However, the machine may fail to detect the CI signal normally due to noise superimposed at the time of reception.
  • Page 350 WSW38 (V.34 transmission settings) Selector Function Setting and Specifications No. 1 X : Automatic Setting of the equalizer : Fixed to 4 points : Fixed to 16 points Sending level of guard tone at 0: Normal - 7 db 1: Normal phase 2 Stepping down the transmission 0: 2400 bps...
  • Page 351 WSW39 (V.34 transmission speed) Selector Function Setting and Specifications No. 1 No. 5 2400 bps 4800 bps 7200 bps First transmission speed choice for fallback 9600 bps 12000 bps 14400 bps 16800 bps 19200 bps 21600 bps 24000 bps 26400 bps 28800 bps Last transmission speed choice for fallback...
  • Page 352 WSW40 (V.34 modem settings) Selector Function Setting and Specifications Not used. Not masking Masking No. 3 3429 symbols/sec No. 4 3200 symbols/sec Masking of symbol rate(s) No. 5 3000 symbols/sec No. 6 2800 symbols/sec No. 7 Not used. No. 8 2400 symbols/sec NOTE: WSW40 takes effect only when the V.34 mode is permitted (WSW19, selector 7) in models supporting V.34 mode.
  • Page 353 Symbol rate Transmission speed Symbol rate Transmission speed Symbol rate Transmission speed (bps) (bps) (bps) 2400 2400 3000 4800 3429 4800 4800 7200 7200 7200 9600 9600 9600 12000 12000 12000 14400 14400 14400 16800 16800 16800 19200 19200 19200 21600 21600 21600...
  • Page 354 WSW41 (ON-duration of the scanning light source) Selector Function Setting and Specifications No. 1 2 3 0 0 0 16 hours 0 0 1 24 hours ON-duration of the scanning 0 1 0 12 hours light source at room 0 1 1 8 hours temperature 1 0 0...
  • Page 355 WSW42 (Internet mail settings) Selector Function Setting and Specifications Access to the incoming mail (POP3) server 0: Disable 1: Enable (Periodical or on-demand) Access to the outgoing mail 0: Disable 1: Enable (SMTP) server I-FAX relay 0: Disable 1: Enable Not used.
  • Page 356 WSW44 ( Speeding up scanning-1) Selector Function Setting and Specifications Not used. No. 6 7 8 0 0 0 : Obtained compensation data ineffective 0 0 1 : 1 min. Effective time length of the white level compensation data 0 1 0 : 3 min.
  • Page 357 WSW45 ( Speeding up scanning-2) Selector Function Setting and Specifications No. 1 2 3 0 0 0 : No automatic drawing-in 0 0 1 : 1 sec. Delay time from when 0 1 0 : 2 sec. documents are set until the 0 1 1 : 3 sec.
  • Page 358 WSW46 (Monitor of power ON/OFF state and parallel port kept at high) Selector Function Setting and Specifications No. 1 2 0 0 : Disable Monitoring the PC ON/OFF 0 1 : Monitor SELECT IN state 1 0 : Monitor STROBE (Not used.) 1 1 : Monitor both SELECT IN and...
  • Page 359 WSW47 (Switching between high- and full-speed USB) Selector Function Setting and Specifications Handling paper at the 0: Eject paper w/o print 1: Print on the current occurrence of a paper feed paper timing error Not used. No. 3 4 Delay of FAX line 0 0 : 200 ms disconnection when switching 0 1 : 400 ms...
  • Page 360 WSW48 (USB setup latency) Selector Function Setting and Specifications Not used. No. 6 7 8 0 0 0 : Default period 0 0 1 : Shorter 1 0 1 0 : Longer 1 0 1 1 : Longer 2 USB setup latency 1 0 0 : Longer 3 1 0 1 : Longer 4 1 0 0 : Shorter 2...
  • Page 361 WSW50 (SDAA settings) Selector Function Setting and Specifications Percentage voltage for No. 1 2 interpreting the external 0 0 : 80% telephone as being hooked up 0 1 : 90% (based on the network's 1 0 : 70% standard voltage) 1 1 : No detection (Not used.) Apply the initial value specified by local...
  • Page 362 WSW53 (Function setting 17) Selector Function Setting and Specifications No.1234 0001: 100, 200, 300, 300 0010: 100, 200, 200, 200 0011: 100, 100, 100, 100 0100: 50, 200, 300, 300 0101: 50, 200, 200, 200 Interval setting of engine calibration 0110: 50, 100, 300, 300 execution 0111: 50, 100, 200, 200...
  • Page 363 MFC-9420CN APPENDIX 5. WIRING DIAGRAM This appendix provides the wiring diagram that helps you understand the connections between PCBs. Confidential...
  • Page 364 MFC-9420CN APPENDIX 6. CIRCUIT DIAGRAMS This appendix provides the circuit diagrams of the NCU PCB and power supply PCB. A. NCU PCB (U.S.A. model) NCU PCB (Europe, Oceania, Asia model) NCU PCB (Japanese model) B. Power Supply PCB 100V, 127V...
  • Page 365 A. NCU PCB: MFC-9420CN (U.S.A. model) +24V @SW1 100 2W @C20 @C18 C153 C473 1SS120 @T1 BT-17 @C21 @C19 @CR1 C153 C682 MJ-66J-RD315(LF) @C12 C103 RA-242M-C6 1/4W BT-6A C2.2 @R19 910 @AL3 1SS120 P3100 @CR2 @R23 @DB2 @C15 S1ZB60 C224...
  • Page 366 (Europe, Oceania, Asia model) A. NCU PCB: MFC-9420CN +24V @SW1 100 2W @C20 @C18 C153 C473 1SS120 @T1 BT-17 @C21 @C19 @CR1 C153 C682 MJ-66J-RD315(LF) @C12 C563 RA-242M-C6 1/4W BT-6A C2.2 @R19 1.5k @AL3 1SS120 P3100 @CR2 @R23 @DB2 @C15...
  • Page 367 (Japanese model) A. NCU PCB: MFC-9420CN +24V 1SS120 AL1,2,3 C563 C2.2 R41-4910-A KU10S31N A5X-G-24E-908 US:0V 1/10W EUR:0.5V 2.7k RA-351M-V6-2 ASA:1.0V LINE BT-17 OCE:1.5V C221 JPN:2.0V 14 MODEL C184 4.3k 13 +24V R31 100k +24V C333 400V 12 CML MTZJ2.0-A B...
  • Page 368 B. Power Supply PCB 100V, 127V manuals4you.com manuals4you.com Confidential...
  • Page 369 B. Power Supply PCB 240V Confidential...
  • Page 370 SM-FAX045 5CS101 Printed in Japan manuals4you.com manuals4you.com...
  • Page 371: Parts Reference List

    FACSIMILE EQUIPMENT PARTS REFERENCE LIST MODEL: MFC9420CN (For U.S.A. / Germany / United Kingdom / France / Switzerland / Spain / Italy / Pan-Nordic / Generic / Asia / Oceania / Japan)
  • Page 372 NOTES FOR USING THIS PARTS REFERENCE LIST 1. In the case of ordering parts, it needs mentioning the following items: (1) Code (2) Q' ty (3) Description (4) Recommend (The √ mark is attached to recommend parts at this column.) (5) Symbol (PCB No., Revision, and Parts location mounted on the PCB.) Note: No orders without Parts Code or Tool No.
  • Page 374 RIGHT TONER GUIDE LM0620001 LEFT TONER GUIDE LM0621001 WASTE TONER AUGER LM0623001 WASTE TONER AGITATOR LM0624001 LASER UNIT FAN ASSY LM0942001 FRONT BAND LM0941001 DD5 DRIVE GEAR R28 LM0975001 SCANNER GLASS COVER LE8812001 BROTHER EMBLEM UH1948001 PAPER SENSOR 5CS101 MFC9420CN manuals4you.com manuals4you.com...
  • Page 376 2.LEFT SIDE PARTS REF.No. CODE Q'TY DESCRIPTION RECOMMEND REMARK LF9931001 ENGINE CONTROLLER BOARD LJ9521001 HV POWER SUPPLY LG6735001 LV POWER SUPPLY (110V) FOR US/JPN LG6736001 LV POWER SUPPLY (220V) EXCEPT FOR US/JPN POWER SUPPLY BRACKET (110V) FOR US/JPN LM0625001 LM0626001 POWER SUPPLY BRACKET (220V) EXCEPT FOR US/JPN LF9970001...
  • Page 378 3.REAR SIDE PARTS REF.No. CODE Q'TY DESCRIPTION RECOMMEND REMARK LM0634001 PAPER GUIDE (A) LM0635001 PAPER GUIDE (B) UH1948001 PAPER SENSOR LJ2243001 OHP SENSOR UH1948001 PAPER SENSOR LM0637001 PAPER GUIDE LM0638001 TRAY EMPTY ACTUATOR UH3485001 PAPER FEED ROLLER LM0965001 SEPARATOR PAD 5 LM0639001 ERASE LAMP LM0640001...
  • Page 380 4.FUSER UNIT PARTS REF.No. CODE Q'TY DESCRIPTION RECOMMEND REMARK LM0643001 FUSER LAMP (110V) FOR US/JPN LM0644001 FUSER LAMP (220V) EXCEPT FOR US/JPN LM0645001 TOP FUSER COVER LM0649001 FUSER CONNECTOR LM0653001 LOCK KNOB KIT FU 5CS101 MFC9420CN manuals4you.com manuals4you.com...
  • Page 382 5. PAPER TRAY REF.No. CODE Q'TY DESCRIPTION REMARK RECOMMEND LF9938001 PAPER CASSETTE (A4) 5CS101 MFC9420CN manuals4you.com manuals4you.com...
  • Page 384 6. TRANSFER UNIT REF.No. CODE Q'TY DESCRIPTION RECOMMEND REMARK LM0894001 TRANSFER UNIT 5CS101 MFC9420CN manuals4you.com manuals4you.com...
  • Page 386 7.PAPER EXIT UNIT PARTS REF.No. CODE Q'TY DESCRIPTION REMARK RECOMMEND LF9936001 REAR COVER ASSY LM0657001 TRANSFER BASE ASSY LM0658001 REGISTRATION ACTUATOR LM0659001 REGISTRATION ROLLER ASSY LM0660001 TRANSFER ROLLER ASSY LM0661001 EXIT GUIDE ASSY LM0662001 EXIT ROLLER ASSY UH1948001 PAPER SENSOR LM0664001 FUSER EXIT ACTUATOR UH3463001...
  • Page 388 8.LOWER FEEDER REF.No. CODE Q'TY DESCRIPTION RECOMMEND REMARK LM0702001 TRAY EMPTY SENSOR LM0703001 PAPER SIZE SENSOR LM0704001 PAPER FEED ASSY LM0705001 PAPER FEED CLUTCH LM0706001 DRIVE GEAR ASSY LM0707001 REAR COVER LM0708001 RIGHT SIDE COVER LM0709001 LEFT SIDE COVER LM0710001 PAPER FEED ROLLER LM0711001 SEPARATOR PAD...
  • Page 390 9.DOCUMENT SCANNER REF No. CODE Q'TY DESCRIPTION RECOMMEND REMARK LF9945001 SCANNER-ADF UNIT(SP) <INCLUDING PANEL UNIT> LF9940001 SCANNER UNIT(SP) 5CS101 MFC9420CN manuals4you.com manuals4you.com...
  • Page 392 10.ADF REF No. CODE Q'TY DESCRIPTION RECOMMEND REMARK √ LF9057001 DOCUMENT COVER ASSY LF9058001 DOCUMENT COVER SUB ASSY 1-1-1 LE9733001 PRESSURE ROLLER 1-1-2 LE2471001 PRESSURE ROLLER SHAFT 1-1-3 LF5206001 LF SPRING 1-1-4 UL6244002 EJECTION ROLLER 1-1-5 LE9735001 PRESSURE ROLLER SHAFT 1-1-6 LE6206001 EJECTION SPRING...
  • Page 394 11.PANEL REF No. CODE Q'TY DESCRIPTION RECOMMEND SYMBOL REMARK LF9069001 PANEL UNIT LF9072001 RUBBER KEY, PRINTED LG6255001 PANEL PCB ASSY B53K817 LG6257001 LCD HOLDER BACK LIGHT MODULE LG6275001 087311016 TAPTITE CUP B M3X10 LF9206001 PANEL COVER ASSY, FOR US LF9363001 PANEL COVER ASSY, FOR ASA/OCE LF9208001 PANEL COVER ASSY, FOR JPN...
  • Page 396 12.PCB REF No. CODE Q'TY DESCRIPTION RECOMMEND SYMBOL REMARK √ LG6413001 MAIN PCB ASSY FOR US B53K792 √ LG6413004 MAIN PCB ASSY FOR ASA/OCE/GER/ B53K792 UK/FRA/CHE/SPA/ITA/PND/GNR √ LG6415001 MAIN PCB ASSY FOR JPN B53K792 √ LG6268001 NCU PCB ASSY FOR US B53K812 √...
  • Page 398 13.ACCESSORIES REF No. CODE Q'TY DESCRIPTION RECOMMEND REMARK LG6571001 TELEPHONE LINE CORD FOR US/ASA/OCE/JPN <RJ-11> LG3077001 TELEPHONE LINE CORD FOR FRA/SPA/GNR LG6572001 TELEPHONE LINE CORD FOR OCE <NEW ZEALAND> UG3625001 TELEPHONE LINE CORD FOR GER/PND <GERMAN> UG4205001 TELEPHONE LINE CORD FOR GER <AUSTRIA> UG3626001 TELEPHONE LINE CORD FOR UK UG3627001...
  • Page 400 14. REPLACEMENT PARTS REF.No. CODE Q'TY DESCRIPTION RECOMMEND REMARK LM0895001 120K KIT 5CS101 MFC9420CN manuals4you.com manuals4you.com...
  • Page 402 15.PACKING MATERIALS REF No. CODE Q'TY DESCRIPTION RECOMMEND REMARK √ LF9349001 OUTER CARTON FOR US LF9352001 INNER CARTON FOR US √ LF9361001 CARTON FOR ASA/OCE/GER/UK/FRA/CHE/SPA/ITA/PND/GNR √ LF9377001 CARTON FOR JPN LF9913001 UPPER CUSHION FOR US/ASA/JPN/OCE LF9971001 UPPER CUSHION FOR GER/UK/FRA/CHE/SPA/ITA/PND/GNR LF9914001 BASE ASSY FOR US/ASA/JPN/OCE LF9972001...
  • Page 403 PL-FAX111 5CS101 Ver. B-1...

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