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Brother DCP-8070D Service Manual

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Table of Contents
DCP- 8070D/8080DN/8085DN
MFC-8370DN/8380DN
MFC-8480DN/8880DN/8890DW
Read this manual thoroughly before maintenance work.
Keep this manual in a convenient place for quick and easy reference at all times.
September 2009
SM-FAX105
8C5D01
(3)
Laser FAX/MFC

SERVICE MANUAL

MODEL:
Confidential

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  Summary of Contents for Brother DCP-8070D

  • Page 1: Service Manual

    Laser FAX/MFC SERVICE MANUAL MODEL: DCP- 8070D/8080DN/8085DN MFC-8370DN/8380DN MFC-8480DN/8880DN/8890DW Read this manual thoroughly before maintenance work. Keep this manual in a convenient place for quick and easy reference at all times. September 2009 SM-FAX105 8C5D01 Confidential...
  • Page 2 TRADEMARKS The Brother logo is a registered trademark of Brother Industries, Ltd. Apple and Macintosh are trademarks of Apple Inc., registered in the United States and other countries. PCL is either a trademark or a registered trademark of Hewlett-Packard Company in the United States and other countries.
  • Page 3: Models & Features

    DCP- DCP- DCP- MFC- MFC- MFC- MFC- MFC- Model 8070D 8080DN 8085DN 8370DN 8380DN 8480DN 8880DN 8890DW Duplex Print/ Yes/No Yes/No Yes/Yes Yes/No Yes/Yes Yes/No Yes/Yes Yes/Yes Scan Wired/ Network Wired Wired Wired Wired Wired Wired Wireless Document Scanner Module Confidential...
  • Page 4 Multi-Function Center (hereinafter referred to as "the machine"). This information is vital to the service personnel to maintain the high printing quality and performance of the machine. This service manual covers the DCP-8070D/8080DN/8085DN, MFC-8370DN/8380DN/ 8480DN/8880DN/8890DW machines. This manual consists of the following chapters:...
  • Page 5 CHAPTER 8: CIRCUIT DIAGRAMS, WIRING DIAGRAM Provides the Circuit Diagrams and Wiring diagram for the connections of the PCBs. APPENDIX 1: WORKER SWITCH (WSW) APPENDIX 2: DELETION OF USER SETTING INFORMATION, etc. Provides instructions on how to delete such as user setting information recorded in the machine.
  • Page 6 REGULATION For Europe and Other countries Radio interference (220 to 240 volt model only) This machine follows EN55022 (CISPR Publication 22)/Class B. Before you use this product, make sure that you use one of the following interface cables. (1) A shielded parallel interface cable with twisted-pair conductors and that it is marked IEEE 1284 compliant.
  • Page 7 Internal laser radiation Maximum radiation power: 5 mW Wave length: 770 - 810 nm Laser class: Class 3B EU Directive 2002/96/EC and EN50419 (European Union only) This equipment is marked with the above recycling symbol. It means that at the end of the life of the equipment you must dispose of it separately at an appropriate collection point and not place it in the normal domestic unsorted waste stream.
  • Page 8 Important A shielded interface cable should be used to ensure compliance with the limits for a Class B digital device. Changes or modifications not expressly approved by Brother Industries, Ltd. could void the user's authority to operate the equipment. Confidential...
  • Page 9 FDA regulations and must be attached to laser products marketed in the United States. MANUFACTURED: Brother Technology (Shenzhen) Ltd. NO6 Gold Garden Ind., Nanling Buji, Longgang, Shenzhen, China This product complies with FDA performance standards for laser products except for deviations pursuant to Laser Notice No.50, dated July 26, 2001.
  • Page 10 SAFETY PRECAUTIONS To use the machine safely Please keep these instructions for later reference and read them before attempting any maintenance. Note : If there are faxes in the machine's memory, you need to print them or save them before you turn off the power and unplug the machine.
  • Page 11 WARNING DO not use any type of spray to clean inside or outside of the machine. Doing this may cause a fire or electrical shock. WARNING - When you move the machine, grasp the side hand holds that are under the scanner. DO NOT carry the machine by holding it at the bottom.
  • Page 12 CHOOSING A LOCATION Place your machine on a flat, stable surface that is free of vibration and shocks, such as a desk. 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).
  • Page 13 CHAPTER SPECIFICATIONS...
  • Page 14: Table Of Contents

    CHAPTER 1 SPECIFICATIONS This chapter lists the specifications of each model, which enables you to make a comparison of different models. CONTENTS 1. COMPONENTS ......................1-1 2. SPECIFICATIONS LIST ....................1-2 2.1 Printing ........................1-2 2.2 Functions ....................... 1-5 2.3 Electronics and Mechanics.................. 1-12 2.4 Network Connectivity...................
  • Page 15: Components

    1. COMPONENTS The equipment consists of the following major components: < CCD model > < CIS model > ADF Unit ADF Unit Scanner Unit Scanner Scanner Unit Dress Cover R Panel Unit NCU Cover Speaker ASSY NCU PCB Panel Unit Scanner Dress Cover L Joint Cover ASSY Speaker ASSY...
  • Page 16: Specifications List

    2. SPECIFICATIONS LIST Printing Model 8080DN 8085DN 8480DN 8880DN 8890DW Print method Electrophotography by semiconductor laser beam scanning Laser Method: 1 polygon motor, 1 laser beam Wavelength: 770 nm - 810 nm Output: 5 mW (Max) Laser class: Class3 B Resolution ®...
  • Page 17 Model DCP8070D MFC8370DN MFC8380DN Print method Electrophotography by semiconductor laser beam scanning Laser Method: 1 polygon motor, 1 laser beam Wavelength: 770 nm - 810 nm Output: 5 mW (Max) Laser class: Class3 B Resolution ® 1200 dpi Windows 2000/XP/ XP Professional x64 Edition, Windows HQ1200 ®...
  • Page 18 Model DCP8070D MFC8370DN MFC8380DN Consumable Toner cartridge Life expectancy: Standard: 3,000 pages/cartridge High-capacity: 8,000 pages/cartridge * When printing A4/Letter size paper in accordance with ISO/IEC 19752. Shelf life: 2 years without opening (6 months after opening) Drum unit Life expectancy: 25,000 pages/drum unit Life expectancy will vary depending on number of continuous printing pages.
  • Page 19: Functions

    Functions <Controller> Model 8080DN 8085DN 8480DN 8880DN 8890DW 300 MHz Back up Clock Yes (up to 60 hours) Memory Standard 64 MB Option 1 DIMM slot; expandable up to 576 MB Backup Yes (up to 60 hours) Interface IEEE 1284 Parallel, Hi-Speed USB 2.0, IEEE 1284 Ethernet 10/100 BASE-TX, USB Host Parallel,...
  • Page 20 66 scalable fonts ® (PostScript 3™) Download from http://solutions.brother.com. Code39, Interleaved 2 of 5, FIM (US-PostNet), Post Net (US-PostNet), EAN-8, EAN-13, UPC-A, UPC-E, Codabar, ISBN (EAN), ISBN (UPC-E), Code128 (set A, set B, set C), EAN128 (set A, set Specifications are subject to change without notice.
  • Page 21 X 10.3.9 or greater) Linux Linux printer driver for CUPS printing system (x86, x64 environment) Linux printer driver for LPD/LPRng printing system (x86, x64 environment) Utility Driver Deployment Wizard Download from http://solutions.brother.com. Model DCP8070D MFC8370DN MFC8380DN ® Printer driver Windows...
  • Page 22 Page Manager 7 ® Macintosh Linux <PC-Fax> Model 8080DN 8085DN 8480DN 8880DN 8890DW ® Windows Send (FaxShare Software by Brother) Receive Send ® Macintosh (FaxShare Software by Brother) Receive Linux Send (LPR / CUPS PC-FAX Send Driver) Receive Download from http://solutions.brother.com. Model...
  • Page 23 Network Remote Setup BRAdmin BRAdmin Light, Web BRAdmin Light, Web Base ® Macintosh Base Management Management, Network Remote Setup Linux Web Base Management Download from http://solutions.brother.com. Model DCP8070D MFC8370DN MFC8380DN ® Windows BRAdmin Light, Web Base Management, BRAdmin Professional , Web BRAdmin...
  • Page 24: Direct Print Feature

    MFC8380DN Direct Print PDF version1.7 , JPEG, Exif+JPEG, PRN (created by own printer driver), TIFF (Scanned by Brother model), XPS version 1.0. PDF data including a JBIG2 images files, a JPEG2000 image file or transparency files are not supported. Specifications are subject to change without notice.
  • Page 25 <System requirements> Available Recom- Computer Platform & Minimum Hard Processor Speed mended Operating System Version Disk Space ® ® ® Windows Windows Intel Pentium 4 or 512MB 50MB ® Vista equivalent 64-bit supported CPU Windows AMD Opteron™ 256MB 512MB 50MB ®...
  • Page 26: Electronics And Mechanics

    Electronics and Mechanics Model 8080DN 8085DN 8480DN 8880DN 8890DW Power Copying Average 680 W at 25 °C (77 °F) consumption Ready Average 85 W at 25 °C (77 °F) Sleep Average Average Average 16 W at 25 °C 18 W at 25 °C 19 W at 25 °C Noise level...
  • Page 27 Model DCP8070D MFC8370DN MFC8380DN Power Copying Average 570 W Average 570 W (25°C) consumption (25°C) Ready Average 80 W Average 80 W (25°C) (25°C) Sleep Average 9 W Average 11 W (25°C) (25°C) Noise level Sound Pressure ADF copy: 56 dB (A) Ready: 30 dB (A) Sound Power ADF copy: 6.95 B (A)
  • Page 28: Network Connectivity

    Mac OS X 10.3.9 or greater printing Management utility BRAdmin Professional 3 for Windows (Brother original Windows utility for printer and server management) Web BRAdmin for Windows (Server based management utility / Windows IIs (4.0/5.0) mode only) Web Based Management (Printer and print server management through web browser) recommend Microsoft Internet Explorer 6.0 (or greater), Fire fox 1.0 (or...
  • Page 29: Wireless Network

    Microsoft Internet Explorer 6.0 (or greater), Fire fox 1.0 (or greater) for Windows Safar: 1.2 (or greater) for Macintosh A wireless network connection is supported only between the Brother printer and an ® ® access point for PC's running Windows Server 2003 x64 Edition and Windows Professional x64 Edition.
  • Page 30: Service Information

    Service Information These are key service information to maintain the product. Machine life: 200,000 pages MTBF (Meantime between failure): 4000 hours MTTR (Meantime to repair): Average 0.5 hours Maximum monthly volume: 30,000 pages Periodical maintenance parts: Parts Approximate Life (pages) ADF unit 50,000 or 5 years Document Scanner unit...
  • Page 31: Paper

    Paper 2.6.1 Paper handling Model 8080DN 8085DN 8480DN 8880DN 8890DW Paper Standard 250 sheets Input tray Multi- 50 sheets (Plain)/ 3 sheets (Envelope) purpose tray Option 250 sheets Up to 50 sheets (Xerox4024 20lbs, environment: temp. 20-30C Humidity 50-70%) Paper Face-down 150 sheets Output Face-up...
  • Page 32: Media Specifications

    2.6.2 Media specifications Model 8080DN 8085DN 8480DN 8880DN 8890DW Media type Paper tray Plain paper, Bond paper, Recycled paper, (Standard) Transparencies , Thin paper Multi-purpose Plain paper, Thick paper, Bond paper, Recycled paper, tray Envelope , Label, Transparencies , Thin paper Optional tray Plain paper, Bond paper, Recycled paper, Thin paper Duplex...
  • Page 33 Model DCP8070D MFC8370DN MFC8380DN Media type Paper tray Thin Paper, Plain Paper, Bond Paper, Recycled Paper, (Standard) Transparencies Multi-purpose Thin Paper, Plain Paper, Thick Paper, Bond Paper, tray Recycled Paper, Envelopes, Labels, Transparencies Optional tray Thin Paper, Plain Paper, Bond Paper, Recycled Paper Duplex...
  • Page 34: Type And Size Of Paper

    2.6.3 Type and size of paper The machine loads paper from the installed paper tray or the multi-purpose tray. The name s for the paper trays in the printer driver as follows; The name for the paper trays The name for the paper trays in the printer driver Paper tray (T1) Tray 1...
  • Page 35 <Media type> Choose the Tray 1/2 MP Tray Duplex media type from the printer driver Plain paper Plain paper 75 to 105 g/m (20 to 28 lb) Recycled paper Recycled paper Bond paper Bond paper Rough paper- 60 to105 g/m 60 to161 g/m 60 to 161 g/m (16 to 28 lb.)
  • Page 36: Printable Area

    Printable Area PCL emulation When using PCL emulation, the edges of the paper that cannot be printed on are shown below. Portrait Physical page Printable area Logical page Physical page length Maximum logical page length Distance from edge of physical page to edge of logical page Note : •...
  • Page 37 The table below shows the printable areas when printing on Portrait for each paper size. Size Letter 215.9mm 279.4mm 203.2mm 279.4mm 6.3mm 4.2mm 8.5" 11.0" 8.0" 11.0" 0.2" 0.16" (2,550dots) (3,300dots) (2,400dots) (3,300dots) (75dots) (50dots) Legal 215.9mm 355.6mm 203.2mm 355.6mm 4.2mm ↑...
  • Page 38 Size A5 Long 210.0mm 148.5mm 198.0mm 148.5mm 6.0mm 4.2mm 8.27" 5.85" 7.79" 5.85" 0.2" 0.16" (2,480dots) (1,754dots) (2,338dots) (1,754dots) (71dots) (50dots) DL Long 220.0mm 110.0mm 207.0mm 110.0mm 6.26mm 4.2mm Edge 8.66" 4.33" 8.17" 4.33" 0.25" 0.16" (2,598dots) (1,299dots) (2,450dots) (1,299dots) (74dots) (50dots) 76.2mm...
  • Page 39 Landscape Physical page Printable area Logical page Physical page length Maximum logical page length Distance from edge of physical page to edge of logical page Note : • "Logical page" shows the printable area for a PCL driver. • "Printable area" shows mechanical printable area of the machine. •...
  • Page 40 The table below shows the printable areas when printing on Landscape for each paper size. Size Letter 279.4mm 215.9mm 269.3mm 215.9mm 5.0mm 4.2mm 11.0" 8.5" 10.6" 8.5" 0.2" 0.16" (3,300dots) (2,550dots) (3,180dots) (2,550dots) (60dots) (50dots) Legal 355.6mm 215.9mm 345.5mm 215.9mm 4.2mm ↑...
  • Page 41 Size A5 Long 148.5mm 210.0mm 138.5mm 210.0mm 5.0mm 4.2mm 5.58" 8.27" 5.45" 8.27" 0.20" 0.16" (1,754dots) (2,480dots) (1,636dots) (2,480dots) (60dots) (50dots) DL Long 110mm 220mm 102mm 220mm 4.0mm 4.2mm Edge 4.33" 8.66" 4.00" 8.66" 0.16" 0.16" (1,299dots) (2,598dots) (1,199dots) (2,598dots) (50dots) (50dots) 127mm...
  • Page 42: Print Speeds With Various Settings

    Print Speeds with Various Settings (CCD model) Print speed is up to 30 ppm for A4 size and 32ppm for Letter size when loading A4 or Letter size paper from the paper tray in the plain paper mode. Actual print speed varies depending on the media type or paper size as shown in the tables below;...
  • Page 43 (CIS model) Print speed is up to 28 or 30 ppm for A4 and Letter size when loading A4 or Letter size paper from the paper tray in the plain paper mode. Actual print speed varies depending on the media type or paper size as shown in the tables below;...
  • Page 44: Telephone

    Telephone Model 8480DN 8880DN 8890DW 8370DN 8380DN Handset Chain Dialing Automatic Redial PBX Feature No (Europe:Yes) Speaker Phone Hold/Mute Key Music on Hold Handset Volume Speaker Volume Yes (3 steps + OFF) Ring Volume Yes (3 steps + OFF) Beeper Volume Yes (3 steps + OFF) One-Touch Dial 40 (20 x 2) locations...
  • Page 45: Fax

    8890DW 8370DN 8380DN Modem Speed 33.600 bps 33.600 bps (Fax) Transmission Speed Approx. 2 sec. (Brother#1Chart Std resolution, JBIG) ITU-T Group Super G3 Coding Method MH / MR / MMR / JBIG Color FAX Fax/Tel Switch Superfine Yes (TX & RX)
  • Page 46 Receive Out-of-Paper Up to 500 pages (ITU-T Test Chart, Standard Resolution, JBIG) Reception Up to 600 pages (Brother #1Chart, Standard Resolution, JBIG) (ITU-T Chart) Fax Rx Stamp Yes Memory Transmission Up to 500 pages (ITU-T Test Chart#1, Standard Resolution, JBIG)
  • Page 47: List/Report

    2.11 List/Report Model 8080DN 8085DN 8480DN 8880DN 8890DW Activity Report/Journal Yes (up to 200) Report Transmission Verification Report Cover page Help List Call Back Message Caller ID List Tel Index List No/No Yes/Yes Numeric/Alphabetic Memory Status List System Setup (User Setting) List Order Form Yes (Europe/Asia Except for China) Model...
  • Page 48: Copy

    2.12 Copy Model 8080DN 8085DN 8480DN 8880DN 8890DW Copy Speed Simplex A4: Up to 30 cpm Letter: Up to 32 cpm First Copy Out Time Less than 10.5 sec ( From READY mode ) Multi Copy Stack Yes (up to 99) Sort Reduction/ 25% - 400% in 1% increments...
  • Page 49 Model DCP8070D MFC8370DN MFC8380DN Copy Speed Simplex A4: Up to 28 cpm A4: Up to 28 cpm A4: Up to 30 cpm Letter: Up to 30 cpm First Copy Out Time Less than10.5 sec Multi Copy Stack Yes (Up to 99) Sort Reduction/ 25% - 400% in 1% increments...
  • Page 50: Document Scanner

    2.13 Document Scanner Model 8080DN 8085DN 8480DN 8880DN 8890DW Color/Mono Color Resolution Scanner Maximum 600 (horizontal scan) x 2400 (vertical scan) dpi (Optical) Glass Maximum 600 (horizontal scan) x 1200 (vertical scan) dpi Resolution 19,200 (horizontal scan) x 19,200 (vertical scan) dpi (Interpolated) Scanning Monochrome A4: 3.03 seconds...
  • Page 51: Usb Host

    Model DCP8070D MFC8370DN MFC8380DN Color/Monochrome Color Resolution Scanner Maximum. 600 (horizontal scan) x 2400 (vertical scan) dpi (Optical) Glass (Color & Monochrome) Maximum. 600 (horizontal scan) x 600 (vertical scan) dpi (Color & Monochrome) Resolution (Interpolated) 19,200 (horizontal scan) x 19,200 (vertical scan) dpi Scanning Monochrome A4: 2.49 seconds Speed...
  • Page 52: Theory Of Operation

    CHAPTER THEORY OF OPERATION Confidential...
  • Page 53 CHAPTER 2 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 1.
  • Page 54: Overview

    1. OVERVIEW Host Computer USB Memory For the model with the wireless LAN only (For the models with the LAN only) Centronics Control WLAN USB Host parallel interface USB interface panel interface interface (CCD model only) Control Section Printer data Fax data Line NCU*...
  • Page 55: Electronics

    2. ELECTRONICS General Block Diagram (Main fan) Low-voltage power supply Main fan Toner High-voltage sensor PCB power supply (Light Rear relay Power supply fan reception) Fuser thermistor Regist front sensor Paper eject Sensor PCB DX unit sensor PCB sensor (PE+PEDGE) Regist rear sensor MP sensor PCB...
  • Page 56: Mechanics

    3. MECHANICS Cross-section Drawing - Printer part Paper stack lever Transfer roller Laser unit Corona wire Exposure drum Develop roller Eject roller 2 Back cover Heat roller MP tray Eject roller 1 Regist roller Separation roller MP Separation pad MP Paper eject actuator Paper feed roller MP Regist actuator rear...
  • Page 57 - ADF part (CCD model) Switch back roller ASSY Document Flap B front sensor 2 Eject roller Paper feed Switch back Flap C roller 1 Pick-up roller sensor actuator Separation roller Switch back Document front sensor actuator 1 sensor Paper feed roller 2 Document front sensor actuator 2 Document rear sensor Document rear...
  • Page 58 - ADF part (CIS model) ADF cover open actuator ADF cover Separation flap cam Nip piece Switch back actuator Separation pad Switch back roller Exit roller Ejection flap Document eject actuator Paper feed roller 3 Switch back flap A Paper feed roller 2 Document hold Document front actuator 1 Front flap...
  • Page 59: Scanner Mechanism

    Scanner Mechanism This mechanism consists of the document cover, the document scanner unit (scanner cover), and the automatic document feeder (ADF). The document scanner unit consists of a scanner top cover, CCD module or CIS module and scanner base. <CCD model> <CIS model>...
  • Page 60: Document Scanner Unit

    3.2.1 Document scanner unit The document scanner unit is equipment which scans the paper using the scanner module (CCD/CIS). This machine prints the scanning data (copy) or sends data as FAX (FAX transmission). There are two kinds of scanning method of the document scanner unit. One is operation to scan with the document scanner unit, the paper is placed on the document glass, the scanner module moves under the document glass, and it scans the paper, and the other one is operation to scan in cooperation with the ADF unit, scan the paper which has been sent...
  • Page 61 7. Scanning operation (The scanner module moves under the immovable document.) Open the document cover, place a sheet of the document (or opened book) onto the document glass, and close the document cover. Then, the machine starts scanning by the operation of the panel, and the scanner drive mechanism is started and the scanning operation is started.
  • Page 62: Adf Unit

    3.2.2 ADF unit The ADF unit is equipment which sends one document or the document for every plurality to the ADF scanning part of the document scanner unit, and performs continuation scanning. As for the ADF of this machine, the duplex scanning is also possible. Performance of the ADF - The number of maximum capacity: CCD model Up to 50 sheets, CIS model Up to 20 sheets - Maximum resolution: Up to 600dpi...
  • Page 63 3. Function of each motor/solenoid - ADF motor Driving source of overall ADF. - Paper feed solenoid The paper feed solenoid disable pick-up roller and separation roller while the machine is taking action scanning to prevent the next document from being drawn into the ADF. - Switch back solenoid Switches the direction of rotation of the switch back roller ASSY.
  • Page 64 CIS model The automatic document feeder (ADF) of the CIS model consists of the pick-up roller, separation roller, paper feed rollers 1/2/3, eject roller, ADF motor, switch back sensor, document rear sensor, document front sensors 1/2 and document eject sensor. For further details on the sensors, see 3.6 Sensors position.
  • Page 65 5. ADF simplex scanning (The document moves over the immovable scanner module.) (1) Set the document face up into the paper feed chute ASSY. When the machine starts simplex scanning, the ADF motor is rotated clockwise, the pick-up roller draws the document, and the separation roller and separation rubber send a sheet of the document to the ADF one by one from the top page of the stacked documents.
  • Page 66 6. ADF duplex scanning (The document moves over the immovable scanner module.) CCD model (1) Set the document face up into the document chute. When the machine starts duplex scanning, the ADF motor is rotated clockwise, the pick-up roller draws the document, and the separation roller and separation pad send a sheet of the document to the ADF one by one from the top page of the stacked documents.
  • Page 67 (4) The switch back roller ASSY is turned counter again, and the document is drawn again. The document is passed through the paper feed rollers 1, 2 and 3, and ejected to the document cover by the eject roller. Switch back roller ASSY Paper feed roller 2 Eject roller Paper feed roller 3...
  • Page 68 CIS model (1) Set the document face down into the document chute. When the machine starts duplex scanning. The ADF motor is rotated clockwise, the pick-up roller draws the document, and the separation roller and separation pad send a sheet of the document to the ADF one by one from the top page of the stacked documents.
  • Page 69: Paper Feeding

    Paper Feeding MP path DX path Paper tray path LT path Fig. 2-18 2-16 Confidential...
  • Page 70: Plate-Up Function Of The Paper Tray

    3.3.1 Plate-up Function of the Paper Tray The plate ASSY in the paper tray is pushed up with the motor drive and not with the spring in order to maintain the constant pressure to the feed roller and to give the paper feeding performance.
  • Page 71: Paper Supply

    3.3.2 Paper supply The feed roller picks up a few sheets or one sheet of paper from the paper tray every time it is rotated and feeds it to the separation roller. Pinch roller Regist roller Regist actuator rear Feed roller Regist actuator front Pressure roller PE actuator...
  • Page 72: Paper Registration

    3.3.3 Paper registration After the paper top position is detected by the regist actuator front, the paper, separated into individual sheets by the separation roller, is fed further for a specified time, and the paper top position reaches the regist roller so that the paper skew is adjusted. Then, the regist solenoid is turned on, the regist roller starts turning, and the paper is fed to the transfer roller in the drum/toner ASSY.
  • Page 73: Paper Eject

    3.3.4 Paper eject After the printing image on the exposure drum is transferred onto the paper, the paper is fed to the fuser unit to fix unfixed toner onto the paper by the heat roller and the pressure roller in the fuser unit.
  • Page 74: Duplex Printing

    3.3.5 Duplex printing After the paper exits from the eject roller ASSY with the front of sheet printed, the eject roller ASSY rotates conversely and feeds the paper to the Duplex unit, where the paper skew is adjusted. Afterwards, the paper is ejected from the Duplex unit to the path through the regist roller and to the transfer block in the drum unit again for process of printing on the back of sheet.
  • Page 75: Paper Feeding From The Mp Tray

    3.3.6 Paper feeding from the MP tray The separation roller MP is connected with the feed roller through the gear in the MP roller holder ASSY. When the separation roller is driven, therefore, the feed roller is also driven. At this time, the recording paper is drawn out of the MP tray by rotation of the paper feed roller MP contacted with the recording paper.
  • Page 76: Toner Cartridge

    Toner Cartridge 3.4.1 Methods for Detecting Toner Life When the machine detects the toner life end, "Replace Toner" is displayed. The toner life is displayed through the following two ways. First, such indication is displayed when detection is performed by the toner sensor; second, it is displayed at the time when a cumulative rotation of the develop roller reaches its upper limit.
  • Page 77: Cartridge Life

    3.4.2 Cartridge life A new toner cartridge can print approximately 3,000 (standard toner) or approximately 8,000 (high yield toner) A4 or Letter size single-sided pages at normal duty (ISO/IEC19752). In the case of low-duty printing, if the number of printed pages are reached the cartridge life, "Replace Toner"...
  • Page 78: New Toner Detection

    3.4.3 New toner detection This machine is equipped with the function to detect that the residual quantities of the toner are not enough by examining the degree that the toner in the cartridge blocks the light by the transmission light sensor. This function informs the user's that the toner cartridge has reached its life.
  • Page 79 When the new toner detection machanism detects that the toner cartridge is replaced with a new one, the developing bias voltage is initialized at the same time. The toner used for the machine has a property that print density is light first and gradually darker in the course of usage.
  • Page 80 <When a toner cartridge in use is inserted after "Replace Toner" is displayed by toner sensor detection > A count value before changes is continuously indicated as a number of the rotation for the develop roller. Irrespective of the amount of toner, printing becomes disabled when the number of the rotation for the develop roller reaches the upper limit.
  • Page 81: Print

    Print 3.5.1 Basic Principle The printing process consists broadly of 5 processes: electrification, exposure, development, transfer and fusing. 1. Charging: The surface of an exposure drum is electrically charged. 2. Exposure: A printed image is formed on the surface of the drum by applying laser beam. 3.
  • Page 82: Print Process

    3.5.2 Print Process (1) Charging The flow of the ion charge is controlled by constant voltage of the grid 850 V to ensure it is distributed evenly on the drum surface. In order to coat toner on the exposure drum, the drum needs to be evenly electrified.
  • Page 83 (2) Exposure The laser beam radiated from a laser diode inside the laser unit is concentrated into a constant width by a slit in the CO lens cell and then reflected by a polygon mirror rotating at high speed. The evenly charged exposure drum is irradiated with reflected light and exposed. Surface potential is lowered by such exposure and a printed image is formed.
  • Page 84 (3) Development Toner is attracted to a printed-image area on the exposure drum where surface potential is lowered due to exposure. By controlling developing bias voltage supplied to the develop roller, the amount of toner taken to the drum is adjusted to keep printing density constant. Charging Laser beam 400 V to approx.
  • Page 85 (4) Transfer By applying a minus charge to the transfer roller, the toner adhered to the exposure drum is transferred to paper. Supply roller Toner cartridge Develop roller Exposure drum Toner Transfer roller Fig. 2-33 Memo : • Control of transfer bias The transfer bias applied in the transfer roller is adjusted according to types and sizes of paper so as to keep excellent image quality.
  • Page 86 (5) Fusing The toner transferred on paper passes between the heat roller and the pressure roller in the fuser unit, being fused by heat and pressure. The thermistor detects surface temperature of the heat roller and turns ON/OFF the halogen heater lamp. The temperature is kept constant. Fuser unit Heat roller Halogen heater...
  • Page 87: Sensors Position

    Sensors position Sensor name Type Located on Function High-voltage PS Detect the paper top position Regist front sensor Photo sensor or absence of paper. High-voltage PS Control the first print Regist rear sensor Photo sensor position on the paper. Detect whether the paper is Paper eject sensor Photo sensor Relay rear PCB...
  • Page 88 CCD model Document front sensor 1 Switch back sensor Document front sensor 2 ADF unit Regist frame Document cover sensor Document rear sensor Toner LED PCB (Light emission) Home position sensor Frame R Frame L Paper eject sensor MP PE sensor (Relay rear PCB) PE EG sensor Duplex tray sensor...
  • Page 89 CHAPTER ERROR INDICATION AND TROUBLESHOOTING...
  • Page 90 CHAPTER 3 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 91 11. DOCUMENT FEEDING PROBLEMS................3-77 11.1 No Feeding ......................3-77 11.2 Double Feeding ....................3-78 11.3 Paper Jam ......................3-78 11.4 Wrinkles....................... 3-80 12. SCANNING IMAGE DEFECT TROUBLESHOOTING..........3-81 12.1 Image Defect Examples ..................3-81 12.2 Troubleshooting Image Defect ................3-81 13.
  • Page 92: Introduction

    1. INTRODUCTION Troubleshooting is the countermeasure procedures that the service personnel should follow if an error or malfunction occurs with the machine. It is impossible to anticipate all of the possible troubles which may occur in future and determine the troubleshooting procedures, so this chapter covers some sample troubles.
  • Page 93: Part Names

    Part names < CCD model > < CIS model > ADF Unit ADF Unit Scanner Unit Scanner Scanner Unit Dress Cover R Panel Unit NCU Cover Speaker ASSY NCU PCB Panel Unit Scanner Dress Cover L Joint Cover ASSY Speaker ASSY NCU PCB Joint Cover FR Joint Cover ASSY...
  • Page 94: Initial Check

    Initial Check Check the following items before attempting to repair the machine. ■ Operating Environment (1) Put your machine on a flat, stable surface such as a desk that is free of vibration and shocks. (2) Use the machine in a well-ventilated room; use the machine within the following ranges of temperature and humidity: temperature between 10°C and 32.5°C (50°F to 90.5°F), and the relative humidity is maintained between 20% and 80%.
  • Page 95 (2) Cleaning Use a soft dry cloth. warning DO NOT use flammable substances such as alcohol, benzine, thinner or any type of spray to clean the inside or outside of the machine. Doing this may cause a fire or electrical shock. Confidential...
  • Page 96: Distinguish Error Cause

    2. DISTINGUISH ERROR CAUSE 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 machine errors and communications errors. For the communications errors, the machine also prints out the transmission verification report and the communications list.
  • Page 97 Refer Error Message Type of Error Action Document Jam The document was not Remove the jammed paper from the inserted or fed properly, or ADF. the document scanned 3-29 from the ADF was too long. DR Mode in Use The machine is set to Set Distinctive Ring to Off.
  • Page 98 Refer Error Message Type of Error Action Not Registered You tried to access a One Set up the One Touch or Speed Dial Touch or Speed Dial number. 3-74 number that is not programmed. Out of Memory The machine’s memory is Fax sending or copy operation in full.
  • Page 99 Refer Error Message Type of Error Action Replace Parts It is time to replace the Replace the PF Kit 2. PF Kit 2 or paper feeding kit for Tray 3-15 Replace PF Kit 2 Replace Toner The toner cartridge is used Replace the toner cartridge with a up and printing is not new one.
  • Page 100: Error Codes

    3. ERROR CODES This machine includes a self-diagnosis function. If the machine does not work normally it judges that an error has occurred, and indicates the corresponding error message on the LCD, which in turn helps the end user to quickly find out the problem. Error Indication Error Refer...
  • Page 101 Error Refer Error Refer Problem Problem codes codes Fax paper setting mismatch DMA transfer error (The setting paper becomes 3-23 3-31 besides the A4/Letter/Legal/ Folio) (Not applicable) Fax paper size is incorrect (The Document scanner home paper is smaller 10mm than the position sensor is not turned on.
  • Page 102: Error

    Error Refer Error Refer Problem Problem codes codes Main PCB failure Wireless LAN is unable to 3-38 communicate between W-LAN 3-39 PCB and access point Central temperature of heat LVPS PCB failure 3-38 3-39 roller exceeds 280°C E6 EEPROM error 3-38 F8 Battery connection error 3-40...
  • Page 103: Error Code Cause And Remedy

    Error Code Cause and Remedy These errors are recoverable by following the message indicated on the LCD or following the items indicated in User Check. ■ Error code 1E Drum End Soon The drum unit reached its life and requires replacement. <User Check>...
  • Page 104: Eeprom Of Main Pcb Failure 3-13

    ■ Error code 35 Print Unable 35 Turn the power off and then back on again. EEPROM of main PCB failure Step Cause Remedy Main PCB failure Replace the main PCB ASSY. ■ Error code 36 Print Unable 36 Turn the power off and then back on again. HVPS PCB during standby failure Step Cause...
  • Page 105: No Toner Cartridge

    ■ Error code 44 No Toner Open the Front Cover, then install Toner Cartridge. No toner cartridge <User Check> • Install a new toner cartridge. Step Cause Remedy Dirt on electrodes on toner Clean both electrodes. cartridge and machine body (Refer to Fig.
  • Page 106: The Paper Feed Kit T1 Reached Its Life And Requires Replacement. 3-15

    ■ Error code 52 Replace Parts PF Kit 1 The paper feed kit T1 reached its life and requires replacement. <User Check> • Replace the paper feed kit T1 with a new one. Step Cause Remedy Replacement time of the paper Replace the paper feed kit T1.
  • Page 107: Paper Jam (Duplex Tray)

    ■ Error code 56 Cover is Open Close the Fuser Cover which can be found behind the Back Cover up the machine. Back cover is open <User Check> • Close the back cover. • Install the Duplex unit. Step Cause Remedy Harness connection failure of relay Check the harness connection of the relay...
  • Page 108: Fuser Unit Failure 3-17 7D

    ■ Error code 58 Fuser Error Turn the power off, then on again. Leave the machine for 15 min. Fuser unit failure Error code 59 Self-Diagnostic Will Automatically Restart within 15 minutes. Fuser unit failure (Detect fuser failure at start-up) <User Check>...
  • Page 109: Temperature Rise When Heater Is Off

    ■ Error code 68 Print Unable 68 Turn the power off and then back on again. Temperature rise when heater is off Step Cause Remedy Fuser unit failure Replace the fuser unit Main PCB failure Replace the main PCB ASSY. ■...
  • Page 110: Fuser Temperature Exceeds Its Lower Limit (Center Thermistor)

    ■ Error code 6A Print Unable 6A Turn the power off and then back on again. Fuser temperature does not reach 60°C within the specified time (center thermistor) Error code 6B Print Unable 6B Turn the power off and then back on again. Fuser temperature does not reach 100°C within the specified time (center thermistor) Error code 6C Print Unable 6C...
  • Page 111: Fuser Motor Error

    ■ Error code 70 Print Unable 70 Turn the power off and then back on again. Fuser motor error Step Cause Remedy Motor failure Replace the main motor. Main PCB failure Replace the main PCB ASSY. ■ Error code 71 Print Unable 71 Turn the power off and then back on again.
  • Page 112: Rapid Temperature Rising Failure (Center Thermistor)

    ■ Error code 76 Print Unable 76 Turn the power off and then back on again. Rapid temperature rising failure (center thermistor) Error code 78 Print Unable 78 Turn the power off and then back on again. Rapid temperature falling failure (center thermistor) Step Cause Remedy...
  • Page 113 ■ Electrodes location of the toner/drum unit (5) Grid Drum Unit (3) Charge (7) Cleaner (1) Exposure (4) Developer drum roller (6) Transfer roller Fig. 3-2 ■ Electrodes location of the machine Cleaner Grid Charge Developer roller Exposure drum CCD model Transfer roller Cleaner Grid...
  • Page 114: Failure Of Discharge Detection (Printing Becomes Unable Until The Drum Is Replaced With A New One.)

    ■ Error code 7F Size mismatch Fax received. Set correct paper size in menu. Fax paper setting mismatch (The setting paper is besides the A4/Letter/Legal/Folio) Error code 80 Size mismatch Reload correct paper, then press Start. Fax paper size is incorrect (The paper is smaller 10mm than the letter size (11inch) in Fax List/Report) NOTE : •...
  • Page 115: Tray 1 Is Not Installed Into The Machine

    ■ Error code 84 Jam Rear Open the Back Cover and remove the jammed paper, then press Start. Paper jam in the back cover <User Check> • Check if the paper is jammed around the opened back cover. If jammed, remove it. Step Cause Remedy...
  • Page 116: Paper Jam Inside The Machine

    ■ Error code 88 Jam Inside Open the Front Cover, pull out the Drum Unit completely and remove the jammed paper. Paper jam inside the machine <User Check> • Check if the paper is jammed around the removed drum unit. If jammed, remove it. Step Cause Remedy...
  • Page 117 ■ Error code 8A Jam Tray 1 Remove the jammed paper from Tray 1. Paper jam (Tray 1) Error code 8B Jam Tray 2 Remove the jammed paper from Tray 2. Paper jam (Tray 2) Error code 8C Jam MP Tray Remove the jammed paper from Multi Purpose Tray and press Start.
  • Page 118: Paper Jam Near Eject Tray

    ■ Error code 8D Cover is Open Make sure there is no paper jammed inside the machine and close the Back Cover, then press Start. Paper jam near eject tray <User Check> • Check if the paper is jammed in the back cover. If jammed, remove it. Step Cause Remedy...
  • Page 119: Paper Empty

    ■ Error code 9F No Paper Reload paper, then press Start. Paper empty <User Check> • Replenish the paper in the paper tray. Step Cause Remedy Dirt on PE sensor Clean the PE sensor. Harness connection failure of PE Check the harness connection of the PE EG sensor PCB ASSY.
  • Page 120: During Scanning, 90 Cm Or Longer Of A Document Is Detected

    ■ Error code A2 Document Jam Clear the scanner jam, then press the Stop Key. During scanning, 90 cm or longer of a document is detected <User Check> • Check if the document is jammed in the ADF. If it is jammed, remove it. Step Cause Remedy...
  • Page 121: Scanning Color Parameter File Failure

    ■ Error code A5 Scan Unable A5 Remove the original document. Turn the power off, then on again. Fax scanning error (Warning: Document scanner unit malfunction of first time) Step Cause Remedy Scanning failure Turn the power switch off and on. Then, try scanning again.
  • Page 122 ■ Error code AD Scan Unable AD Remove the original document. Turn the power off, then on again. DMA transfer error Step Cause Remedy Scanner module failure Replace the CCD module. (CCD model) Replace the document scanner unit. (CIS model) Main PCB failure Replace the main PCB ASSY.
  • Page 123: Document Scanner Home Position Sensor Is Not Turned Off

    ■ Error code AF CCD model Scanner Locked Open the Document Cover and release Scanner lock lever. Press Stop key. CIS model Scan Unable See Troubleshooting and routine maintenance chapter in User's Guide. Document Scanner home position sensor is not turned off. <User Check>...
  • Page 124: Dark Level Offset Data Level Error For Scanning

    ■ Error code B1 Scanner Error Dark level offset data level error for scanning * This error is indicated on the LCD in the maintenance mode. Error code B2 Scanner Error Gain control data level error for scanning * This error is indicated on the LCD in the maintenance mode. Error code B7 Scanner Error A/D converter standard voltage failure;...
  • Page 125: Scanning Light Adjustment Error

    ■ Error code B9 Scanner Error Scanning light adjustment error. * This error is indicated on the LCD in the maintenance mode. Error code BB Scanner Error White level data error * This error is indicated on the LCD in the maintenance mode. Error code BD Scanner Error Black level data error...
  • Page 126 ■ Error code C0 Cartridge Error Put the Toner Cartridge back in. New toner detection failure <User Check> • Install the toner cartridges into the machine properly. Step Cause Remedy Power off or front cover opened Reset the developing bias voltage and while detecting a new toner develop roller counter.
  • Page 127: Dimm Error

    ■ Error code C9 DIMM Error Make sure that the DIMM is inserted correctly. The failed DIMM is installed, or the DIMM is not installed correctly. <User Check> • Install the DIMM correctly. Step Cause Remedy Main PCB failure Replace the main PCB ASSY. ■...
  • Page 128: Modem Initialization Failed

    ■ Error code D1 Machine Error D1 Modem initialization failed Step Cause Remedy Main PCB failure Replace the main PCB ASSY. ■ Error code DD Fuser Error Turn the power off, then on again. Leave the machine for 15min. Fuser error other than 58, 59, 68, 69, 6A, 6B, 6C, 6D, 6E, 6F, 76, 78, DE and E2 are occurred.
  • Page 129 ■ Error code E1 Print Unable E1 Turn the power off and then back on again. Main PCB failure Step Cause Remedy Main PCB failure Replace the main PCB ASSY. ■ Error code E2 Fuser Error Turn the power off, then on again. Leave the machine for 15 min. Central temperature of heat roller exceeds 280°C Step Cause...
  • Page 130 ■ Error code EC Print Unable EC See Troubleshooting and routine maintenance chapter in User's Guide. Fuser fan failure Step Cause Remedy Main fan failure Replace the main fan ASSY. Main PCB failure Replace the main PCB ASSY. ■ Error code ED Print Unable ED Turn off and on.
  • Page 131: Error Code F8-Ff

    ■ Error code F8 Print Unable F8 Unplug machine, then call Brother. Battery connection error Step Cause Remedy Battery harness connection failure Reconnect the battery harness. Main PCB failure Replace the main PCB ASSY. Battery failure Replace the battery. ■ Error code F9...
  • Page 132: Paper Feeding Problems

    4. PAPER FEEDING PROBLEMS Problems related to paper feeding are end user recoverable if following the User Check items. If the same problem occurs again, follow each procedure in the order of the number described in the Step column in the tables below. No Feeding Step Cause...
  • Page 133: Paper Jam

    Paper Jam ■ Paper jam in the paper tray and front cover Step Cause Check Result Remedy Dirt on edge Is there paper powder in Clean the edge sensor. sensor the edge sensor? Registration front Does the registration front Re-assemble the actuator/edge actuator/edge actuator registration front actuator/...
  • Page 134 ■ Paper jam in the back cover and paper eject section Step Cause Check Result Remedy Foreign object Is there a foreign object Remove the foreign around fuser unit around the fuser unit? object. Paper eject Does the paper eject Replace the paper eject actuator failure actuator move smoothly?
  • Page 135: Dirt On Paper

    Dirt on Paper <User Check> - Check if the paper is loaded into the paper tray correctly. - Turn over the stack of paper in the paper tray, or try rotating the paper 180° in the paper tray. Step Cause Check Result Remedy...
  • Page 136: Curl In The Paper

    Curl in the paper The curl in the left figure. <User Check> - Change the paper. Step Cause Check Result Remedy Mismatch the Is the problem solved by Change the position of the setting the paper changing the position of anti-curl switch.
  • Page 137: Troubleshooting For Print Image Defect From Pc/Usb/Fax Reception

    5. TROUBLESHOOTING FOR PRINT IMAGE DEFECT FROM PC/USB/FAX RECEPTION Image Defect Examples Light Faulty registration Dark Poor fixing Completely blank Vertical streaks Dirt on the back of paper Image distortion All black Black vertical streaks Black horizontal White vertical White horizontal Faint print in a light background stripes...
  • Page 138: The Pitch Which Appears In The Image Caused By Failure Of A Roller

    The pitch which appears in the image caused by failure of a roller. Image defects which appear periodically may be caused by failure of a roller. Specify the cause referring to the pitch which appears in the image as shown in the table below. The pitch which appears in the image Parts name...
  • Page 139: Troubleshooting For Image Defect

    Troubleshooting for image Defect Image defect related problems are end user recoverable if following the User Check items. If the same problem occurs, follow each procedure in the order of the number described in the Step column in the tables below. ■...
  • Page 140: Faulty Registration

    <Location of the leser beam window> CCD model CIS model Fig. 3-6 ■ Faulty registration <User Check> - Check that the appropriate media type is selected in the printer driver. Step Cause Check Result Remedy Registration rear Does the registration Re-assemble the actuator catching rear actuator move...
  • Page 141 ■ Dark <User Check> - Check the machine's environment. High temperature and high humidity conditions can cause this problem. - Replace the drum unit with a new one. - Replace the toner cartridge with a new one. Step Cause Check Result Remedy Drum unit...
  • Page 142: Poor Fixing

    Poor fixing ■ <User Check> - Replace the drum unit with a new one. - Replace the toner cartridge with a new one. Step Cause Check Result Remedy Low pressure of Is the problem solved by Change the position of the pressure roller in changing the position of anti-curl switch.
  • Page 143: Image Distortion

    ■ Completely blank <User Check> - Replace the drum unit with a new one. - Replace the toner cartridge with a new one. Step Cause Check Result Remedy Developing bias Are the electrodes on Clean both electrodes. voltage the drum unit and (Refer to Fig.
  • Page 144 ■ All black Step Cause Check Result Remedy Corona wire Are the electrodes on Clean both electrodes. failure the drum unit and (Refer to Fig. 3-2, Fig. 3-3.) machine body dirty? Is the corona wire Replace the drum unit. damaged? Scanner harness Is the scanner harness Reconnect the scanner...
  • Page 145: Vertical Streaks

    ■ Dirt on the back of paper <User Check> - This problem may disappear after printing approximately 10 pages of completely blank sheets. Step Cause Check Result Remedy Scratch and Dirt Is the pressure roller Print approximate 10 pages. on the fuser unit ASSY dirty? Is any other Replace the fuser unit.
  • Page 146 ■ Black horizontal stripes <User Check> - Clean the inside of the machine and the corona wire in the drum unit. - Replace the drum unit with a new one. Step Cause Check Result Remedy Dirt on the Are the electrodes on Clean both electrodes.
  • Page 147 ■ White vertical streaks <User Check> - Clean the scanner windows of the laser unit with a soft lint-free cloth. (Refer to Fig. 3-6.) - Replace the toner cartridge with a new one. - Check the machine’s environment. High temperature and high humidity conditions can cause this problem.
  • Page 148: White Spots

    ■ Faint print <User Check> - Check that the machine is installed on a level surface. - Replace the toner cartridge with a new one. - Clean the scanner windows of the toner unit with a soft cloth. (Refer to Fig.
  • Page 149 <Clean the drum unit as follows> If you have print quality problems, clean the drum unit as follows: (1) Put the print sample in front of the drum unit, and find the exact position of the poor print. Fig. 3-8 (2) Turn the drum unit gear to the direction of the arrow of the figure by hand while looking at the surface of the exposure drum.
  • Page 150: Black Spots

    ■ Black spots <User Check> - Damp (wet) paper might be used. Try to change to freshly unpacked paper. - Toner may be empty. Replace the toner cartridge with a new one. - If the problem is not solved after printing a few pages, the drum unit may have glue from label stock on the exposure drum surface.
  • Page 151: Horizontal Lines

    ■ Downward fogging of solid color <User Check> - Toner may be empty. Replace the toner cartridge with a new one. Step Cause Check Result Remedy HVPS PCB Is the problem solved Replace the HVPS PCB failure after replacing the ASSY.
  • Page 152 ■ Ghost <User Check> - Check the machine's environment, conditions such as high or low humidity may cause this situation to occur. - Check that the appropriate media type or size is selected in the printer driver. - Replace the drum unit with a new one. Step Cause Check...
  • Page 153 ■ Hollow print by condensation <User Check> - Turn the power on and leave the machine for a few minutes. Step Cause Check Result Remedy Condensation of Is the problem solved Drum condensation drum unit by high after setting the drum countermeasure mode is humidity condensation...
  • Page 154: Software Setting Problems

    6. SOFTWARE SETTING PROBLEMS The machine may not print the data correctly if there are incorrect software settings. <User Check> - Check that the parallel cable, USB cable and the network cable is not damaged or broken. - Check that the correct machine is selected if you have an interface switching device. - Check the descriptions on the software setting in the user’s guide.
  • Page 155: Network Problems

    7. NETWORK PROBLEMS <User Check> - Check the descriptions in the network user’s guide. - Try resetting the factory settings. Step Cause Check Result Remedy Wireless LAN Is the problem solved Replace the wireless LAN PCB failure after replacing the PCB ASSY.
  • Page 156: Troubleshooting Of The Communications Errors

    8. TROUBLESHOOTING OF THE COMMUNICATIONS ERRORS If a communications error occurs, the facsimile equipment (1) Gives the alarm (intermittent bleep) for approximately four seconds. (2) Indicates the appropriate error message on the LCD. (3) Prints the transmission report during fax transmission. ■...
  • Page 157 (2) Command reception Code 1 Code 2 Causes Unable to detect a flag field. Carrier was OFF for 200 ms or longer. Abort detected (“1” in succession for 7 bits or more). Overrun detected. A frame for 3 seconds or more received. CRC error in answerback.
  • Page 158 (4) Instructions received from the remote terminal [checking the NSC, DTC, NSS, and DCS] Code 1 Code 2 Causes Illegal coding system requested. Illegal recording width requested. ECM requested although not allowed. Polled while not ready. No document to send when polled. Nation code or manufacturer code not correct.
  • Page 159 (9) Signal isolation Code 1 Code 2 Causes Unable to detect video signals and commands within 6 seconds after CFR is transmitted. Received PPS containing invalid page count or block count. (10) Video signal reception Code 1 Code 2 Causes Error correction sequence not terminated even at the final transmission speed for fallback.
  • Page 160 (11) General communications-related Code 1 Code 2 Causes Unable to receive the next-page data. Unable to receive polling even during turn-around transmission due to call reservation. PC interface error. Communication canceled by pressing the Stop/Exit button before establishment of FAX communication*. Communication canceled by pressing the Stop/Exit button after establishment of FAX communication*.
  • Page 161 (13) Maintenance mode Code 1 Code 2 Causes Failed to detect 1300 Hz signal in burn-in operation. Failed to detect PB signals in burn-in operation. (14) Machine error Code 1 Code 2 Causes Machine error (For X X, refer to "2.1 ERROR INDICATION") 3-70...
  • Page 162: Troubleshooting Of The Control Panel

    9. TROUBLESHOOTING OF THE CONTROL PANEL ■ Nothing is displayed on the LCD. <User Check> - Verify if the power switch is turned off. Step Possible cause Check Result Remedy Connection Are the main PCB and Reconnect the connector between main control panel PCB properly.
  • Page 163 ■ The control panel does not work. <User Check> - Check whether the function lock is not set. Step Possible cause Check Result Remedy Key sticking Is there a key on the Clean up the panel cover, control panel stuck? or remove the burrs from panel cover and panel keys.
  • Page 164: Troubleshooting Of Fax Functions

    10. TROUBLESHOOTING OF FAX FUNCTIONS ■ Can not send FAX. <User Check> - Verify that the telephone cord is securely inserted into the right socket. Step Possible cause Check Result Remedy Dialing mode Does a dialing signal Check the dialing mode Setting (PB or DP) come out setting at customer's...
  • Page 165 ■ Speed dialing and One-touch dialing can't be used. Step Possible cause Check Result Remedy Dialing mode Does a dialing signal Check the dialing mode Setting (PB or DP) come out setting at customer's normally in each mode? again. (Use telephone line Check the telephone line emulator.) cord between machine and...
  • Page 166: No Bell Ring

    ■ No bell ring. Step Possible cause Check Result Remedy Ring delay Ring delay is set to “0”. Change the ring delay settings to another value. Ring volume Ring volume is set to Change the ring volume “OFF”. setting to another value. Connection Are the main PCB and Reconnect the connector...
  • Page 167 ■ Speaker is silent during on-hook dialing. Step Possible cause Check Result Remedy Connection Are the main PCB and Reconnect the connector between main speaker connected properly. PCB and properly? speaker Connection Are the main PCB and Reconnect the connector between main NCU PCB connected properly.
  • Page 168: Document Feeding Problems

    11. DOCUMENT FEEDING PROBLEMS Problems related to document feeding are end user recoverable if following the User Check items. If the same problem occurs again, follow each procedure in the order of the number described in the Step column in the tables below. 11.1 No Feeding <User Check>...
  • Page 169: Double Feeding

    11.2 Double Feeding <User Check> - Check whether the document does not use the paper which is thinner than the specification. Step Cause Check Result Remedy Feed roller holder Is the surface of the Replace the feed roller ASSY failure separation roller worn holder ASSY.
  • Page 170 ■ Paper jam in the ADF <User Check> - Check whether length does not use paper equal to or less than 148 mm. Step Cause Check Result Remedy Foreign object Is there a foreign object Remove the foreign inside ADF inside ADF? object.
  • Page 171: Wrinkles

    ■ Paper jam at the duplex scanning <User Check> - Use the A4 or Letter size. - Use the document without warpage. - Use the document which is not so too thin. (thickness of paper) Step Cause Check Result Remedy Foreign object Is there a foreign object Remove the foreign...
  • Page 172: Scanning Image Defect Troubleshooting

    12. SCANNING IMAGE DEFECT TROUBLESHOOTING 12.1 Image Defect Examples Faulty registration Light Dark Vertical streaks Completely blank White vertical streaks Fig. 3-11 12.2 Troubleshooting Image Defect Image defect related problems are end user recoverable if following the User Check items. If the same problem occurs, follow each procedure in the order of the number described in the Step column in the tables below.
  • Page 173 ■ Faulty registration 1. ADF Step Cause Check Result Remedy Document rear Does the document rear Re-assembly the document actuator catching actuator move rear actuator. on some position smoothly? Fine adjustment Is the problem solved by Perform the fine of scan start performing the fine adjustment of scan start position...
  • Page 174 ■ Completely blank Step Cause Check Result Remedy White level data Is the problem solved by Perform the acquisition of malfunction performing the white level data. (Function acquisition of white level code 55) data. (Function code 55) Scanner module Is the problem solved by Replace the CCD module.
  • Page 175 ■ White vertical streaks <User Check> - Check if the ADF glass or document glass is not stained. Step Cause Check Result Remedy Scanner module Is the problem solved by Replace the CCD module. failure replacing the CCD unit (CCD model) (CCD model) or Replace the document document scanner unit.
  • Page 176: Others Problems

    13. OTHERS PROBLEMS ■ The machine is not turned on, or the LCD indication does not appear. Step Cause Chec