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Brother MFC9700 Service Manual

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MULTI-FUNCTION CENTER

SERVICE MANUAL

MODEL: MFC9800/MFC9700/DCP1400
MFC9880/MFC9860/MFC9760

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Summary of Contents for Brother MFC9700

  • Page 1: Service Manual

    MULTI-FUNCTION CENTER SERVICE MANUAL MODEL: MFC9800/MFC9700/DCP1400 MFC9880/MFC9860/MFC9760...
  • Page 2 © Copyright Brother 2002 All rights reserved. No part of this publication may be reproduced in any form or by any means without permission in writing from the publisher. Specifications are subject to change without notice. All products and company names mentioned in this manual are trademarks or registered trademarks of their...
  • Page 3 PREFACE This publication is a Service Manual covering the specifications, construction, theory of operation, and maintenance of the Brother machine. It includes information required for field troubleshooting and repair--disassembly, reassembly, and lubrication--so that service personnel will be able to understand machine function, to rapidly repair the machine and order any necessary spare parts.

  • Page 4: Safety Information

    The label for Chinese products MANUFACTURED: JULY 2001 BROTHER CORP. (ASIA) LTD. BROTHER BUJI NAN LING FACTORY Gold Garden Industry, Nan Ling Village, Buji, Rong Gang, Shenzhen, China. This product complies with FDA radiation performance standards, 21 CFR Subchapter J.
  • Page 5 CHAPTER I. GENERAL DESCRIPTION...

  • Page 6: General Description

    CHAPTER I. GENERAL DESCRIPTION CONTENTS MACHINE OUTLINE ....................I-1 1.1 External Appearance and Weight ..............I-1 1.2 Components ..................... I-1 SPECIFICATIONS..................... I-2...

  • Page 7: Machine Outline

    MACHINE OUTLINE External Appearance and Weight The figure below shows the machine appearance and approximate dimensions. Weight: Machine proper 15.2 kg Machine (incl. drum unit & toner cartridge) 17.0 kg In package 21.2 kg Components The machine consists of the following major components: I - 1...

  • Page 8: Specifications

    SPECIFICATIONS (1/4) Model Name MFC9800 MFC9700 GENERAL Print Engine Laser (ZLe) Laser (ZLe) Modem Speed(bps) 33,600(Fax) 14,400(Fax) Transmission Speed(sec.) Approx. 2 Approx. 5 ITU-T Group Super G3 Coding Method MH/MR/MMR/JBIG MH/MR/MMR/JBIG Input/Output Width 5.8"-8.5"/2.75"-8.5" 5.8"-8.5"/2.75"-8.5" ADF(pages) up to 50 up to 50 LCD Size 16 Characters x 2 Lines 16 Characters x 1 Lines...
  • Page 9 (1/4) Model Name DCP1400 GENERAL Print Engine Laser (ZLe) Modem Speed(bps) Transmission Speed(sec.) ITU-T Group Coding Method Input/Output Width 5.8"-8.5"/2.75"-8.5" ADF(pages) up to 50 LCD Size 16 Characters x 2 Lines On-Screen Programming Backup Clock Memory Capacity(Physical:MByte) Backup Memory Optional Memory Optional Paper Tray Yes(250pages:LT-400) Dimensions (WxDxH)
  • Page 10 (2/4) Model Name MFC9800 MFC9700 Internet FAX Available with Optional LAN Board Available with Optional LAN Board Easy Receive/Fax Detect Fax/Tel Switch Super Fine Yes (TX & RX) Yes (TX & RX) 300dpi Transmission Gray Scale Contrast Yes (Auto/S.Light/S.Dark) Yes (Auto/S.Light/S.Dark) Smoothing Call Reservation Over Auto TX Password Check...
  • Page 11 (2/4) Model Name DCP1400 Internet FAX Easy Receive/Fax Detect Fax/Tel Switch Super Fine 300dpi Transmission Gray Scale Contrast Smoothing Call Reservation Over Auto TX Password Check Enhanced Remote Activate Multi Resolution Transmission Multi Transmission Next-Fax Reservation Delayed Timer Polling (RX only) Quick Scan (Memory Transmission) Broadcasting Batch Transmission...
  • Page 12 (3/4) Model Name MFC9800 MFC9700 PRINTER Color/Mono Mono Mono Engine Type Laser(ZL) Laser(ZL) Resolution(dpi) 600x600 600x600 Speed(ppm) up to 14 up to 14 Paper Capacity(sheets) Additional Paper Capacity(sheets) 250 (User Option) 250 (User Option) Output Paper Capacity(sheets) Standard Print Language Windows GDI(600x600) Windows GDI(600x600) Emulation...
  • Page 13 (3/4) Model Name DCP1400 PRINTER Color/Mono Mono Engine Type Laser(ZL) Resolution(dpi) 600x600 Speed(ppm) up to 14 Paper Capacity(sheets) Additional Paper Capacity(sheets) 250 (User Option) Output Paper Capacity(sheets) Standard Print Language Windows GDI(600x600) Emulation PCL4 Resident Fonts 24 Bitmap (PCL4 Comp.) Fonts Disk Based Yes (35 TrueType) Paper Handling Size...
  • Page 14 8.5 - 9.1 TWAIN 8.6 - 9.1 8.6 - 9.1 Printer Driver (Brother) Viewer (ScanSoft PaperPort for MAC) TWAIN (TII/Brother) PC Fax (TX[FAX Share] only:Brother) *2: Brother #1 Chart, JBIG coding, Standard Resolution *3: USB - Windows98/98SE/Me, Windows2000 only. I - 8...
  • Page 15 Printer Driver 8.5 - 9.1 TWAIN 8.6 - 9.1 Printer Driver (Brother) Viewer (ScanSoft PaperPort for MAC) TWAIN (TII/Brother) PC Fax (TX[FAX Share] only:Brother) *2: Brother #1 Chart, JBIG coding, Standard Resolution *3: USB - Windows98/98SE/Me, Windows2000 only. I - 9...
  • Page 16 MFC- 9880 MFC-9860 GENERAL Print Engine Laser (ZL) Laser (ZL) Modem Speed(bps) 33,600(Fax) 33,600(Fax) Transmission Speed(sec.) Approx. 2 (brother#1 chart, JBIG) Approx. 2 (brother#1 chart, JBIG) ITU-T Group Supper G3 Supper G3 Coding Method MH/MR/MMR/JBIG MH/MR/MMR/JBIG Input/Output Width FB;8.5"X11"ADF;5.8"-8.5/2.75"-8.5" FB;8.5"X11"ADF;5.8"-8.5/2.75"-8.5"...
  • Page 17 (1/4) ZLe-FB(w/out Modem ) Model Name MFC-9760 GENERAL Print Engine Laser (ZL) Modem Speed(bps) Transmission Speed(sec.) ITU-T Group Coding Method Input/Output Width FB;8.5"X11"ADF;5.8"-8.5/2.75"-8.5" ADF(pages) up to 50 LCD size 16 Characters x 2 lines On-Screen Programming Back up Clock Yes (1 hour) Memory Capacity(physical) 8MB(RAM) Memory Backup...
  • Page 18 (2/4) Model Name MFC- 9880 MFC-9860 Internet FAX Available with Option(NC-8100h) Easy Receive/Fax Detect Fax/Tel Switch Yes with TEL/R key Yes with TEL/R key Super Fine Yes (TX & RX) Yes (TX & RX) 300dpi Transmission Gray Scale Contrast Yes (Auto/Light/Dark) Yes (Auto/Light/Dark) Smoothing Call Reservation Over Auto TX...
  • Page 19 (2/4) Model Name MFC-9760 Internet FAX Easy Receive/Fax Detect Fax/Tel Switch Super Fine 300dpi Transmission Gray Scale Contrast Smoothing Call Reservation Over Auto TX Password Check Enhanced Remote Activate Multi Resolution Transmission Multi Transmission(>Dual Access) Next-Fax Reservation(>Dual Access) Delayed Timer Polling Quick-Scan(Memory Transmission) *1 by ADF by Flatbed...
  • Page 20 (3/4) Model Name MFC- 9880 MFC-9860 PRINTER Color/Mono Mono Engine Type Laser(ZLe) Resolution(dpi) 600x600 Speed(ppm) up to 14 Paper Capacity(sheets) Additional Paper Capacity(sheets) 250 (User Option) 250 (User Option) Output Paper Capacity(sheets) Standard Print Language Windows GDI(600x600) Emulation PCL5e Yes ( Bitmap font: LetterGothic 16.66, OCR-A, Resident Fonts OCR-B, Scalable font: 49 fonts ) Fonts Disk Based...
  • Page 21 (3/4) Model Name MFC-9760 PRINTER Color/Mono Mono Engine Type Laser(ZLe) Resolution(dpi) 600x600 Speed(ppm) up to 14 Paper Capacity(sheets) Additional Paper Capacity(sheets) 250 (User Option) Output Paper Capacity(sheets) Standard Print Language Windows GDI(600x600) Emulation PCL5e Yes ( Bitmap font: LetterGothic 16.66, OCR-A, Resident Fonts OCR-B, Scalable font: 49 fonts ) Fonts Disk Based...
  • Page 22 Yes (TX only by Brother) *1: The figure is ideal, and refers only to the scanning period, but does not include the feeding & output time of document. *2: By Brother#1 chart, it can store up to 600 pages. I - 16...
  • Page 23 Yes (Brother) PC Fax *1: The figure is ideal, and refers only to the scanning period, but does not include the feeding & output time of document. *2: By Brother#1 chart, it can store up to 600 pages. I - 17...
  • Page 24 CHAPTER II. INSTALLATION...
  • Page 25 CHAPTER 2 INSTALLATION CONTENTS INSTALLING THE UPDATE DATA TO THE FACSIMILE MACHINE......II-1 SETTING ID CODES TO FACSIMILE MACHINES ............II-3...
  • Page 26 INSTALLING THE UPDATE DATA TO THE FACSIMILE 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 27 Installing the update data onto the flash ROM of the facsimile machine NOTE: The following is an installation procedure example on a PC that is running Windows 95/98. (1) Copy the update data and transfer utility onto the desired directory of the hard disk. e.g., C:\UPDATE (2) Click the Start button, point to Programs, and then click MS-DOS Prompt to open an MS-DOS window.
  • Page 28 SETTING ID CODES TO FACSIMILE MACHINES Brother facsimile machines are assigned unique ID codes (character strings) at the factory. If you replace the main PCB of the machine, the machine will lose its assigned ID code so that it will not be identified by the connected PC*.
  • Page 29 CHAPTER III. THEORY OF OPERATION...

  • Page 30: Table Of Contents

    CHAPTER III. THEORY OF OPERATION CONTENTS OVERVIEW ....................... III-1 MECHANISMS ......................III-2 Scanner Mechanism..................III-3 Laser Printing Mechanism................III-5 2.2.1 Paper pick-up and registration mechanism ..........III-5 2.2.2 Print process mechanism................III-6 2.2.3 Heat-fixing mechanism ................III-8 2.2.4 Paper ejecting mechanism................. III-9 Sensors and Actuators ..................

  • Page 31: Overview

    OVERVIEW * Provided on models supporting facsimile function. III - 1...

  • Page 32: Mechanisms

    MECHANISMS The machine is classified into the following mechanisms: SCANNER MECHANISM - ADF mechanism - Document scanning mechanism LASER PRINTING MECHANISM - Paper pick-up and registration mechanism - Print process mechanism (consisting of charging, exposing, developing, and transferring processes) with paper feeding mechanism - Heat-fixing mechanism with paper feeding mechanism - Paper ejecting mechanism...

  • Page 33: Scanner Mechanism

    Scanner Mechanism This mechanism consists of the following: - document tray ASSY which consists of a document chute and document tray, - automatic document feeder (ADF) unit which consists of a document feed roller ASSY, document ejection roller ASSY, ADF motor, and document front and rear sensors, and - scanner unit which consists of a scanner top cover, CCD unit, CCD drive mechanism, CCD HP sensor, and scanner base.
  • Page 34 This scanner mechanism supports a dual scanning system. (1) If you set documents with their faces up on the document chute and start the scanning operation, the ADF motor rotates so that the document feed roller ASSY feeds those documents into the ADF unit, starting from the top sheet to the bottom, page by page. Each document curves downwards and turns to the right so as to advance above the CCD unit, and then it is fed out to the document tray with the document ejection roller ASSY.

  • Page 35: Laser Printing Mechanism

    Laser Printing Mechanism 2.2.1 Paper pick-up and registration mechanism III - 5...

  • Page 36: Print Process Mechanism

    At the 1st stage, the controller drives the main motor without energizing the solenoid so that the paper feed roller simply idles. At the 2nd stage, the controller energizes the solenoid so that the paper feed roller no longer rotates and the paper pick-up roller starts rotating to pick up paper into the machine, a sheet at a time.
  • Page 37 The print process unit works with laser beam, electrical charges, and toner. The graph below shows the transition of electrical charge on the surface of the laser-sensitive drum through the four processes: charging, exposing, developing, and transferring processes. III - 7...

  • Page 38: Heat-Fixing Mechanism

    2.2.3 Heat-fixing mechanism As the paper passes between the heater roller and the pressure roller in the heat-fixing unit, the heater roller fuses the toner on the paper. The controller monitors the internal resistance of the heater thermistor to keep the surface temperature of the heater roller constant by turning the halogen heater lamp on and off.

  • Page 39: Paper Ejecting Mechanism

    2.2.4 Paper ejecting mechanism After the paper passes through the heat-fixing process, it will be ejected from the heat-fixing unit by the paper ejection roller. If the leading edge of the paper pushes down the actuator of the paper ejection sensor, the sensor signals the start of paper ejection.

  • Page 40: Sensors And Actuators

    Sensors and Actuators This machine has 13 sensors: 10 photosensors*, two thermistors, and a mechanical switch as described below. Models supporting a 2nd paper cassette have two more photosensors--2nd registration sensor and 2nd cassette sensor.) Sensor name Type Located on Document front sensor Photosensor Document sensor PCB...
  • Page 41 The above photosensors are a photo-interrupter consisting of a light-emitting diode and a light- sensitive transistor. Each of them has an actuator separately arranged as shown on the next page. III - 11...
  • Page 42 NOTE: Document tray open sensor and jam sensor The machine has a document tray open sensor and jam sensor (both of which are not shown in the above illustration). The former is on the harness support; the latter is on the heat-fixing unit. Location of Sensors and Actuators III - 12...

  • Page 43: Control Electronics

    CONTROL ELECTRONICS The hardware configuration of the machine is shown below. Provided on models supporting LAN interface. Models supporting the video capture are not available now. Provided on models supporting facsimile function. Provided on models available with a 2nd paper cassette (as an option). Configuration of Machine III - 13...
  • Page 44 CHAPTER IV. DISASSEMBLY/REASSEMBLY AND LUBRICATION...
  • Page 45 CHAPTER IV. DISASSEMBLY/REASSEMBLY AND LUBRICATION CONTENTS DISASSEMBLY/REASSEMBLY ................IV-1 Safety Precautions ....................IV-1 Preparation......................IV-2 How to Access the Object Component ..............IV-2 Disassembly Order Flow..................IV-3 Lower Rear Cover ....................IV-4 Access Plates R and F ..................IV-4 Paper Cassette....................IV-5 Document Tray ASSY ..................
  • Page 46 1.24 Inner Insulation Film, High-voltage Power Supply PCB, Engine PCB, and 2nd Cassette Relay PCB*................IV-63 1.25 Toner Sensor (light-receiver) PCB and Toner Sensor (LED) PCB..... IV-65 1.26 Gears and Paper Pick-up Roller................. IV-66 1.27 Paper Feed Roller ASSY..................IV-67 1.28 Clutch Levers, Cassette Guide L, and Solenoid..........

  • Page 47: Disassembly/Reassembly

    DISASSEMBLY/REASSEMBLY n n n n Safety Precautions To prevent the creation of secondary problems by mishandling, observe the following precautions during maintenance work. (1) Unplug the power cord from the power outlet before accessing parts or units inside the machine. When having access to the power supply, be sure to unplug the power cord from the power outlet.

  • Page 48: Preparation

    n n n n Preparation Prior to proceeding to the disassembly procedure, (1) Unplug - the power cord, - the modular jack of the telephone line, - the PC interface cable, and - the modular jack of an external telephone set if connected. (Not shown below.) (2) Remove - the paper cassette and - the drum unit (with toner cartridge loaded).

  • Page 49: Disassembly Order Flow

    n n n n Disassembly Order Flow Document tray Upper rear cover Paper cassette Lower rear cover ASSY Access plates ADF unit and R and F document tray Relay PCB open sensor 1.21 - Document NCU shield Provided on models supporting video capture. sensor PCB Provided on models not supporting video capture.

  • Page 50: Lower Rear Cover

    Lower Rear Cover (1) Remove the three screws (two "a" and one "b") from the lower rear cover. Screw "b" is provided on those models available with a 2nd paper cassette (as an option). (2) Lightly pressing sections "X," pull out the lower rear cover. "a"...

  • Page 51: Paper Cassette

    Paper Cassette (1) Pull the pressure plate release lever to the front to release the pressure plate. (2) Fully slide the side guide (R or L) inwards (in the direction of arrow Q) and remove the screw. Then release the latches (arrow R) and pull up the side guide (arrow S). (3) Release the pressure plate from the bosses (arrow T) and remove it (arrow U).

  • Page 52: Document Tray Assy

    Document Tray ASSY (1) Fully open the document tray ASSY. (2) Lift up the document tray ASSY straight and pull the hinges up and out of the scanner unit. (3) Remove the three screws from each of the hinges. IV - 6...
  • Page 53 (4) Remove screw "a," then lightly tap the left end of the document chute to release the three hooks from the document tray. (5) Remove the sponge. (6) Remove screw "b" to take off the support plate. IV - 7...

  • Page 54: Upper Rear Cover

    Upper Rear Cover (1) Remove the two screws from the upper rear cover. (2) Release section "a" from the latch provided on the scanner mount and pull the top of the upper rear cover to the rear and upwards. n n n n Reassembling Notes •...

  • Page 55: Adf Unit And Document Tray Open Sensor

    ADF Unit and Document Tray Open Sensor (1) Remove screw "a" from the harness support (which holds the document tray open sensor). (2) Remove screw "b" to release the grounding wires. (3) Disconnect the following from the relay PCB: • CCD flat cable (P4) •...
  • Page 56 (4) Turn the ADF unit in the direction of arrow , remove the plastic retaining ring, and release the arm (arrow ) from the boss provided on the scanner top cover. Turn the ADF unit back into place. (5) Open the ADF cover (arrow ) and remove two screws "c."...

  • Page 57: Disassembling The Adf Unit

    [ Disassembling the ADF Unit ] Open the ADF cover. Pull the ADF side cover outwards and release the ADF cover from the bosses provided on the ADF side covers. At each of the ADF side covers F and R, remove the screw, pull the unscrewed corner outwards to release it from the document ejection chute, and unhook the latch.
  • Page 58 At the front end of the document feed roller shaft, remove the pawled bushing by pulling its pawls outwards. At the rear end, pull the bushing outwards and lift up the document feed roller ASSY. At the front end of the upper LF roller (gray) shaft, remove the pawled bushing by pulling its pawls outwards.
  • Page 59 10) Remove the two screws and lift up the upper ADF chute. 11) Turn the document front sensor actuator as shown below and lift it up. 12) Turn the document rear sensor actuator as shown below and lift it up. 13) Disconnect the document sensor harness from the document sensor PCB and take out its harness from the harness guides.
  • Page 60 15) At the front end of the document ejection roller shaft, remove the pawled bushing by pulling its pawls outwards. At the rear end, pull the bushing outwards and lift up the document ejection roller ASSY. 16) Remove the three screws and take off the motor bracket. 17) At the front end of the lower LF roller (black) shaft, remove the pawled bushing by pulling its pawls outwards.
  • Page 61 n n n n Reassembling Notes • Take care not to mistake the upper LF roller ASSY (gray) for the lower LF roller ASSY (black). • When setting the document sensor PCB back into place, do not push it down straight, but first fit the PCB in the large latch and then fit it in the small latch (see the illustration given on page IV- 13).

  • Page 62: Scanner Unit And Control Panel Assy

    Scanner Unit and Control Panel ASSY (1) Disconnect the following from the relay PCB: - CCD motor harness - Panel harness - Scanner HP sensor harness IV - 16...
  • Page 63 (2) Slide the scanner unit (with the control panel ASSY) to the rear by approx. 5 mm and then lift it up. (For the disassembly procedure of the scanner unit, refer to page IV-19.) IV - 17...
  • Page 64 (3) Remove the three screws from the underside of the scanner base. (4) Insert the tip of a flat screwdriver into each of the four holes provided in the scanner base and unhook the four latches while lifting up the control panel ASSY. (5) Disconnect the panel harness from the control panel PCB.

  • Page 65: Disassembling The Scanner Unit

    • When connecting the CCD motor harness, panel harness, and scanner HP sensor harness to the relay PCB, route them as shown below. [ Disassembling the Scanner Unit ] The disassembling job of the scanner unit should be done in a clean room to prevent dust or dirt from getting into the scanner unit.
  • Page 66 Turn the gear 17/97 to move the CCD unit to the right to make the following job easier. Remove screw "a" and take out the CCD rail clamp. (See the illustration given on the next page.) Remove two screws "b" from the CCD idle pulley holder, then remove the CCD drive belt from the idle pulley.
  • Page 67 Pull up the CCD motor harness and disconnect it from the CCD motor. 10) Remove three screws "c" from the motor bracket. 11) Lift up the motor bracket. 12) Remove two screws "d" from the CCD motor. The scanner grounding wire also comes off. 13) Disconnect the CCD HP sensor harness from the sensor.
  • Page 68 15) Remove the four screws and take off the flat cable clamp. Remove sponge 3 attached with adhesive tape. 16) Remove the CCD flat cable (which is attached with adhesive tape). 17) Remove the four screws and take off the guide plate. 18) Remove tape and sponges 1, then take out the panel harness and CCD HP sensor harness.
  • Page 69 n n n n Reassembling Notes • Route the panel harness and CCD HP sensor harness through the three notches, then tape them as illustrated on the previous page. • When replacing the CCD flat cable with a new one, be sure to arrange the new cable as illustrated below, then route it along the positioning rib as shown on the previous page.

  • Page 70: Disassembling The Control Panel Assy

    [ Disassembling the Control Panel ASSY ] Turn the control panel ASSY upside down. Remove two screws "a." Slightly lift up the control panel PCB, then unlock the FPC key connector and disconnect the FPC key. Next, unlock the LCD cable connector and disconnect the LCD flat cable. Remove six screws "b."...

  • Page 71: Relay Pcb

    Relay PCB (1) Disconnect the following harnesses from the relay PCB: - Speaker harness - Main-relay (panel) harness - Main-relay (CCD) harness - Main-relay (motors) harness (2) Remove the two screws. (3) Take out the relay PCB. Reassembling Notes • When setting the relay PCB back into place, be careful with the installation direction.

  • Page 72: Speaker

    Speaker and slide the speaker spring in the direction of (1) Press the pawl in the direction of arrow arrow (2) Lift up the speaker. IV - 26...

  • Page 73: Scanner Mount

    1.10 Scanner Mount (1) Remove two screws "a." (2) Open the front cover and remove two screws "b." (3) Pull the tabs of the scanner mount to the front and upwards (in the direction of arrows ) to release them from the bosses provided on the main cover. (4) Lift up the scanner mount in the direction of arrow "a": Stepped screw (Tightening torque: 0.78 N m)
  • Page 74 (5) Turn the scanner mount upside down. (6) Peel off anti-static brushes. NOTE: Once removed, they will become unusable and new parts will have to be put back in. (7) As shown below, warp the gear-equipped end of the exit roller and remove it. IV - 28...
  • Page 75 Reassembling Notes • When setting the scanner mount back into place: - at the right-hand side, raise the main-relay (panel) harness coming through the main cover up and through cutout "x" provided in the scanner mount. - at the left-hand side, pull up the main-relay (motors) harness and chassis grounding wire and raise them up and through square cutout "y"...

  • Page 76: Paper Sub Tray And Tray Holder

    1.11 Paper Sub Tray and Tray Holder (1) Pull out the paper sub tray. (2) While pushing down the center of the paper sub tray to warp it (in the direction of arrow ), pull it out of the tray holder (arrow (3) Insert the tip of a small flat screwdriver into the tray holder (in the direction of arrow ) and pull up the tray holder (arrow...

  • Page 77: Vc Cover, Vc Bracket, And Vc Connector Pcb (For Models Supporting Video Capture

    1.12 VC Cover, VC Bracket, and VC Connector PCB (for models supporting video capture) (1) Remove two screws ("a" and "b"), then take off the VC cover. (2) Remove screw "c," take out the VC bracket together with the VC connector PCB, and disconnect the VC harness.

  • Page 78: Front Cover

    1.13 Front Cover Front Sub Cover (for models not supporting video capture) (1) For models not supporting video capture: Remove the screw and take off the front sub cover from the front cover. (2) Remove the screw from the left bottom of the front side of the main cover. (3) Hold the front cover at an angle of 45 and pull the front cover link to the left to release it from the front cover.

  • Page 79: Outer Chute And Paper Pinch Rollers

    1.14 Outer Chute and Paper Pinch Rollers (1) Pull up the outer chute and open it (in the direction of arrow (2) Remove the chute springs from the hooks provided on the main cover (arrow ), then lift up the outer chute (arrow (3) Remove the paper pinch rollers, their supports, and their springs.

  • Page 80: Main Cover

    1.15 Main Cover (1) Remove two screws "a" from the front side of the main cover. (2) Remove two screws "b" from the rear side of the main cover, and then pull corner edges "X" outwards to dislocate the main cover from the main chassis. Make sure that the cutout provided in the main cover is dislocated from the power inlet.

  • Page 81: Switch Cover (For Models Not Equipped With A Power Switch

    1.16 Switch Cover (for models not equipped with a power switch) (1) Push the locks of the switch cover as shown below and remove it. IV - 35...

  • Page 82: Laser Unit

    1.17 Laser Unit (1) Remove screw "a" and take off the harness cover. (2) Remove two screws "b." (3) Disconnect the polygon motor harness and laser flat cable from the laser unit. (4) Lift up the laser unit. NOTE: When handling the laser unit, take care not to touch the inside of the unit, glass, or mirror.

  • Page 83: Heat-Fixing Unit And Fu Lamp

    1.18 Heat-fixing Unit and FU Lamp (1) Remove the screw from the harness duct. (2) Peel off tape and take off the scanner motor harness, CIS harness, and VC harness* from the harness duct. (3) Unhook the harness duct from the main chassis in the directions of arrows Q and R. *Provided on models supporting video capture IV - 37...
  • Page 84 (4) Remove three screws (two "a" and one "b"). (5) Disconnect the long heater wire (of the heater harness) from the upper center of the heat-fixing unit. (6) Disconnect the short heater wire (of the heater harness) from the left end of the heat-fixing unit. (7) Lift up the heat-fixing unit and disconnect the heater thermistor harness from the engine PCB.
  • Page 85 [Disassembling the heat-fixing unit] (1) Remove the three screws and take off the FU front paper guide. (2) Remove the three screws and take off the star wheel holder ASSY. Heat-fixing unit Screw, bind M3x10 Screw, bind M3x10 Star wheel holder ASSY FU front paper guide (3) Release the heater thermistor harness from the three harness guides provided on the underside of the heat-fixing unit.
  • Page 86 (6) Separate the lower FU frame from the upper one. Boss Upper FU frame Hook Boss Lower FU frame Hook (7) Remove the screw securing the lamp lock plate at the gear side of the upper FU frame. At the other side, loosen the screw.
  • Page 87 CAUTION: When securing the halogen lamp to the lamp lock plate with the screw, be sure to use the plastic jig as shown below to avoid damaging the edge of the halogen lamp with a screwdriver. Lamp lock plate Screw Halogen lamp Plastic jig (9) Take the heater roller out of the upper FU frame.
  • Page 88 NOTE: When setting the heater roller to the upper FU frame, fit the two ribs of the bushing 25 onto the bosses provided on the FU frame as shown below. HR gear 34 Bushing 25 Heater roller Boss NOTE: At the gear side of the heater roller, fit the bushing 25 onto the heater roller with the 0.5 mm thick boss facing up.
  • Page 89 NOTE: When setting the heater roller into the upper FU frame, take care not to damage the heater roller with the four hooks. Hooks Heater roller Hooks Upper FU frame (11) Remove the cleaner ASSY and cleaner spring from the upper FU frame. Cleaner ASSY Cleaner spring Upper FU frame...
  • Page 90 (12) From the lower FU frame, gently lift up the right end of the pressure roller 25 and remove it. Pressure roller 25 Lower FU frame (13) At each of the right and left ends of the lower FU frame, push down the PR bushing to incline it inwards and take it out.
  • Page 91 (16) Release the heater thermistor harness from the harness guides provided on the upper FU frame. Then remove the screw and take off the thermistor. Harness guides Thermistor Upper FU frame Taptite, bind B M3x12 NOTE: When setting the thermistor into the upper FU frame, insert it in the direction shown below.
  • Page 92 (17) From the upper FU frame, remove the screw and take off the idle gear 13. Then slide the ejection roller to the left and take it out to the front. Upper FU frame Ejection roller Taptite, B M2.3x10 Idle gear 13 (18) Unlatch each of the four ejection pinch roller holders R and L from the upper FU frame and take it out.
  • Page 93 (19) Remove a pair of ejection pinch rollers from each of the ejection pinch roller holders R and L. Ejection pinch rollers Ejection pinch rollers Ejection pinch roller holder R Ejection pinch roller holder L (20) Remove the screw from each of the four claw holder plates and take them off. Next turn each of the separate claw ASSYes from the bottom to align its cutout with the opening provided in the upper FU frame.
  • Page 94 (21) Release the paper ejection sensor actuator from the hook on the lower FU frame and then remove it in the direction of the arrow shown below together with the ejection actuator spring. Paper ejection sensor actuator Ejection actuator spring Lower FU frame NOTE: When setting the paper ejection sensor actuator and its spring, make sure that they are fitted into place as illustrated below.
  • Page 95 (22) From the upper FU frame, remove the screw, slightly lift up the shutter of the ejection actuator 3, and remove the jam sensor PCB. Screw, bind B tite 3x10 Jam sensor PCB Ejection actuator 3 Upper FU frame (23) Turn the ejection actuator 3, move it to the right, and lift it up and out of the support. Ejection actuator 3 Support Upper FU frame...
  • Page 96 (24) Remove the screw and take off the actuator holder. Then unhook end "A" of the ejection actuator spring 2 from the upper FU frame and pull up the ejection actuator 2 together with the spring. Taptite, cup M3x8 Hook Ejection Actuator holder actuator...

  • Page 97: Fan

    1.19 Fan (1) Disconnect the fan harness from the engine PCB. (2) Remove two screws, take out the heater wires from the latch of the fan duct, and take off the fan duct together with the fan. IV - 51...
  • Page 98 (3) As shown below, pull the fan duct outwards and take out the fan. Reassembling Notes • Put the fan back into place so that the rating label faces outwards and upside down. • Route the heater wires through the latch of the fan duct as shown on the previous page. IV - 52...

  • Page 99: Drive Gear Assy And Main Motor Assy

    1.20 Drive Gear ASSY and Main Motor ASSY (1) Remove five screws from the drive gear ASSY. (2) Tilt the drive gear ASSY towards you while taking care not to drop the develop joint and spring, and then disconnect the main motor harness. (3) Remove the front cover link and idle gear 56 from the main chassis.
  • Page 100 (4) Remove four screws and take off the main motor ASSY from the drive gear ASSY. Reassembling Notes • If you have removed the gear 39/98 from the drive gear ASSY, hook the spring and tape it as shown below. IV - 54...

  • Page 101: Ncu Shield And Ncu Pcb

    1.21 NCU Shield and NCU PCB* (*Provided on models supporting facsimile function.) (1) Remove three screws from the NCU shield, then take off the NCU shield. (2) USA version: Disconnect the main-NCU harness from the main PCB. European version: Disconnect the main-NCU harness and main-NCU harness 2 from the main PCB.
  • Page 102 Reassembling Notes [USA version] • Route the main-NCU harness above the main-relay (motors) harness as illustrated below. [European version] • As illustrated below, route the main-NCU harness and main-NCU harness 2 between the NCU PCB and the power supply bracket to prevent them from interfering with the primary circuitry on the NCU PCB.

  • Page 103: Bottom Plate, Main Pcb, And Bottom Insulation Film

    1.22 Bottom Plate, Main PCB, and Bottom Insulation Film (1) Disconnect the following harnesses and flat cable from the main PCB: • Main-relay (panel) harness (13-pin, P3) • Main-LV-engine harness (5-pin, P18) • Laser flat cable (P6) • Engine-main harness (12-pin, P5) •...
  • Page 104 (2) Turn the main chassis upside down. (3) Remove 14 screws (nine "a" and five "b"). (4) Slightly lift up the bottom plate and pull it to the rear until you can remove screw "c." (5) Remove screw "c" to release the grounding wire. (6) For models available with a 2nd paper cassette: Remove screw "d"...
  • Page 105 (8) Remove screw "d" and disconnect the paper ejection sensor PCB from the main PCB. (9) Remove five screws (three "e" and two "f"), then take off the main PCB from the bottom plate. (10) Remove the bottom insulation film. "d"...
  • Page 106 Setting up the main PCB after replacement IV - 60...

  • Page 107: Low-Voltage Power Supply Pcb And Power Inlet

    1.23 Low-voltage Power Supply PCB and Power Inlet (1) Remove two screws "g" and take off the rear underbar. (2) Remove screw "h." (3) Slightly lift up the low-voltage power supply PCB and disconnect the heater harness and main- LV-engine harness. The low-voltage power supply PCB is connected to the power inlet with soldered lead wires.
  • Page 108 Reassembling Notes • When connecting the power inlet to the low-voltage power supply PCB, insert the brown and blue lead wires into eyelets L and N in the PCB, respectively, and then solder those wires on the solder side of the PCB. •...

  • Page 109: Inner Insulation Film, High-Voltage Power Supply Pcb, Engine Pcb, And 2Nd Cassette Relay Pcb

    1.24 Inner Insulation Film, High-voltage Power Supply PCB, Engine PCB, and 2nd Cassette Relay PCB* (*Provided on models available with a 2nd paper cassette) (1) Remove screw "a" and take off the inner insulation film. (2) Remove three screws (two "b" and one "c") from the high-voltage power supply PCB and engine PCB.
  • Page 110 (6) For models available with a 2nd paper cassette: Pull the 2nd cassette relay PCB bracket to take out its harness. Remove the screw and take off the 2nd cassette relay PCB from its bracket. Reassembling Notes • Before reinstalling the high-voltage power supply PCB, push in the spring with a flat screwdriver until it snaps into place as shown below.

  • Page 111: Toner Sensor (Light-Receiver) Pcb And Toner Sensor (Led) Pcb

    1.25 Toner Sensor (light-receiver) PCB and Toner Sensor (LED) PCB (1) At the right-hand plate of the main chassis, remove the screw from the toner sensor (light- receiver) PCB, release its harness from the two harness latches, and then pull it out. (2) At the left-hand plate of the main chassis, press the both sides of the lens support on the toner sensor (LED) PCB with your fingers to release them from the main chassis, release its harness from the two latches, and then pull it out.

  • Page 112: Gears And Paper Pick-Up Roller

    1.26 Gears and Paper Pick-up Roller (1) Place the main chassis upside down. (2) Remove the inner gear 54 (by pulling its pawl outwards), gear 45 set P/R, gear 20 P/R, and the bushing from the end of the paper pick-up roller shaft. (3) Remove the pawled bushing by pulling its pawl outwards, then remove the paper pick-up roller and its shaft.

  • Page 113: Paper Feed Roller Assy

    1.27 Paper Feed Roller ASSY (1) Unhook the latch (arrow ) provided on the underside of the plastic frame by using a small flat screwdriver and pull out the gear 21 (arrow (2) Place the main chassis rightside up. (3) At the right end of the paper feed roller shaft, pull up the pawl of the bushing (arrow ) with the tip of a flat screwdriver and move the paper feed roller ASSY to the left (arrow ).

  • Page 114: Clutch Levers, Cassette Guide L, And Solenoid

    1.28 Clutch Levers, Cassette Guide L, and Solenoid (1) Turn the main chassis upside down. (2) Remove the two screws and take off the front underbar (which is shown on page IV-61). (3) Place the main chassis rightside up. (4) Remove the clutch lever F/R by pulling its pawl outwards. (5) Remove the clutch lever spring and clutch lever P/R.

  • Page 115: Cleaning Of High-Voltage Contacts And Grounding Contacts

    1.29 Cleaning of High-voltage Contacts and Grounding Contacts If any toner particles, paper dust or dirt are on the contacts, clean them out. This will ensure that power flows correctly to enable printing. IV - 69...
  • Page 116 IV - 70...

  • Page 117: Lubrication

    LUBRICATION Apply the specified lubricants to the lubrication points as shown below. Lubricant amount Lubricant type Half of a rice-sized Rice-sized pinch Two rice-sized pinches Five rice-sized pinches (Manufacturer pinch of grease of grease (6 mm of grease (12 mm of grease (30 mm (3 mm Molykote grease...

  • Page 118: 2 ] Scanner Mount

    [ 2 ] Scanner mount IV - 72...

  • Page 119: 3 ] Drive Gear Assy

    [ 3 ] Drive gear ASSY IV - 73...

  • Page 120: 4 ] Paper Cassette

    [ 4 ] Paper cassette IV - 74...
  • Page 121 CHAPTER V. MAINTENANCE MODE...
  • Page 122 CHAPTER V. MAINTENANCE MODE CONTENTS ENTRY INTO THE MAINTENANCE MODE ............V-1 LIST OF MAINTENANCE-MODE FUNCTIONS ............V-2 DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS ....V-5 EEPROM Parameter Initialization ..............V-5 Printout of Scanning Compensation Data ............V-6 ADF Performance Test .................. V-8 Test Pattern 1....................

  • Page 123: Entry Into The Maintenance Mode

    1. ENTRY INTO THE MAINTENANCE MODE For machines w/ fax To make the machine enter the maintenance mode, press the Menu, *, 2, 8, 6, and 4 keys in this order. Within 2 seconds For machines w/o fax To make the machine enter the maintenance mode, press the Menu, 0, 2, 8, 6, and 4 keys in this order.

  • Page 124: List Of Maintenance-Mode Functions

    2. LIST OF MAINTENANCE-MODE FUNCTIONS Maintenance-mode Functions Function Reference Code Function Subsection (Page) EEPROM Parameter Initialization 3.1 (V-5) Printout of Scanning Compensation Data 3.2 (V-6) ADF* Performance Test 3.3 (V-8) Test Pattern 1 3.4 (V-9) Firmware Switch Setting 3.5 (V-10) Printout of Firmware Switch Data 3.5 (V-12) Operational Check of LCD...
  • Page 125 - - - - - - - - - - - - - - - - - - - - - - - - - - IMPORTANT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Basically, the maintenance-mode functions listed on the previous page should be accessed by service personnel only.
  • Page 126 DCP1400 Sort key Menu key 0 key Stop key MFC9760 Sort key Menu key 0 key Stop key MFC9700 Stop key Menu key 0 key Resolution key V - 4...

  • Page 127: Detailed Description Of Maintenance-Mode Functions

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

  • Page 128: Printout Of Scanning Compensation Data

    Printout of Scanning Compensation Data n n n n Function The equipment prints out the white and black level data for scanning compensation. n n n n 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 129 Scanning Compensation Data List V - 7...

  • Page 130: Adf Performance Test

    ADF Performance Test n n n n Function The machine counts the documents fed by the automatic document feeder (ADF) and displays the count on the LCD for checking the ADF performance. n n n n Operating Procedure (1) Set documents. (Allowable up to the ADF capacity.) The "DOC.

  • Page 131: Test Pattern 1

    Test Pattern 1 n n n n 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. n n n n Operating Procedure Press the 0 and 9 keys in this order in the initial stage of the maintenance mode.

  • Page 132: Firmware Switch Setting And Printout

    Firmware Switch Setting and Printout [ A ] Firmware switch setting n n n n 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 codes of each country.
  • Page 133 Firmware Switches (WSW01 through WSW50) Continued WSW No. Function WSW38 Function setting 16 WSW39 Function setting 17 WSW40 Function setting 18 WSW41 Function setting 19 WSW42 Function setting 20 WSW43 Function setting 21 WSW44 Speeding up scanning-1 WSW45 Speeding up scanning-2 WSW46 Monitor of power ON/OFF state and parallel port kept at high WSW47...
  • Page 134 [ B ] Printout of firmware switch data n n n n Function The machine prints out the setting items and contents specified by the firmware switches. n n n n Operating Procedure (1) Press the 1 key twice in the initial stage of the maintenance mode. The "PRINTING"...

  • Page 135: Operational Check Of Lcd

    Operational Check of LCD n n n n Function This function allows you to check whether the LCD on the control panel works normally. n n n n Operating Procedure (1) Press the 1 and 2 keys in this order in the initial stage of the maintenance mode.
  • Page 136 MFC9700 DCP1400 MFC9800/9880 MFC9860 Key & Button Entry Order (1) V - 14...
  • Page 137 MFC9760 Key & Button Entry Order (2) V - 14 - 1...

  • Page 138: Sensor Operational Check

    Sensor Operational Check n n n n Function This function allows you to check whether the 13 sensors--document front sensor, document rear sensor, cover sensor, registration sensor, toner sensor, paper ejection sensor, CCD HP sensor, manual insertion sensor, cassette sensor, jam sensor, document tray open sensor, 2nd registration sensor*, and 2nd cassette sensor*--operate correctly.
  • Page 139 (2) Change the detecting conditions (e.g., insert paper through the document sensors or the registration sensor(s), open the front cover, remove the toner cartridge, jam paper at the paper outlet, insert paper manually through the paper slot, and load the paper cassette(s)), and then check that the indication on the LCD changes according to the sensor states.

  • Page 140: Ccd Scanner Area Setting

    CCD Scanner Area Setting n n n n Function The machine sets the CCD scanner area and stores it into the EEPROM. n n n n Operating Procedure (1) Press the 5 key twice in the initial stage of the maintenance mode. The "SCANNER AREA SET,"...

  • Page 141: Erasure Of Received Fax Messages Temporarily Stored In The Flash Memory (Not Applicable To The American Version

    3.11 Erasure of Received FAX Messages Temporarily Stored in the Flash Memory (Not applicable to the American version) n n n n Function This function erases received FAX messages which are temporarily stored in the flash memory so that they will not be lost by powering off the equipment. This function also erases activity report data stored in the flash memory.

  • Page 142: A Display Of The Equipment's Log Information

    3.11A Display of the Equipment’s Log Information 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. (2) For machines w/ fax: Press the Fax Start key.

  • Page 143: Machine Error Code Indication

    3.12 Machine Error Code Indication n n n n Function This function displays an error code of the last error on the LCD. n n n n 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 144: Cancellation Of The Memory Security Mode (Not Applicable To The American Version Or Machines W/O Fax

    3.14 Cancellation of the Memory Security Mode (Not applicable to the American version or machines w/o fax) n n n n Function This procedure can cancel the memory security mode. Use this procedure if the user forgets his/her password entered when setting the memory security mode so as not to exit from the memory security mode.
  • Page 145 CHAPTER VI. ERROR INDICATION AND TROUBLESHOOTING...
  • Page 146 CHAPTER VI. ERROR INDICATION AND TROUBLESHOOTING CONTENTS ERROR INDICATION....................VI-1 1.1 Machine Errors....................VI-1 [ 1 ] Error messages on the LCD............. VI-1 [ 2 ] Error codes shown in the "MACHINE ERROR X X" message..........VI-5 1.2 Communications Errors (Not applicable to machines w/o fax) ......VI-7 TROUBLESHOOTING ....................

  • Page 147: Error Indication

    1. ERROR INDICATION To help the user or the service personnel promptly locate the cause of a problem (if any), the machine incorporates the self-diagnostic functions which display error messages for machine errors and communications errors. (Note that machines w/o fax do not support error messages for communications errors.) For the communications errors, the machine also prints out the transmission verification report and the communications list.
  • Page 148 Messages on the LCD Probable Cause CLEAN UP SCANNER In the scanning compensation data list printed by the mainte- nance-mode function code 05 (refer to Chapter V, Section 3.2), less than fifty percent of the white level data is faulty. (This message may appear only in the maintenance mode.) COOLING DOWN The controller, which monitors the internal resistance of the in-...
  • Page 149 "XX" indicates an error code. Refer to [ 2 ] on pages VI-5 and VI- MACHINE ERROR XX (In the 2nd row) Unplug machine, then call Brother (In the 1st row) In either of the following cases, this message appears, prompting the user to clean the corona wire of the laser-sensitive PLS CLEAN DRUM drum.
  • Page 150 Messages on the LCD Probable Cause (In the 1st row) The toner sensor has detected that there is no toner in the TONER EMPTY cartridge or that no toner cartridge is loaded. If this message appears, recording is no longer possible. (In the 2nd row) Open cover, then replace new toner cartridge...

  • Page 151: 2 ] Error Codes Shown In The "Machine Error X X" Message

    [ 2 ] Error codes shown in the "MACHINE ERROR X X " message Error Code Error factor (Hex.) ( 71 Polygon motor does not synchronize with the reference clock. ) ( 72 Cannot detect Beam Detect signal. ) ( 74 Toner empty.
  • Page 152 Error Code Error factor (Hex.) ( AE The CCD HP sensor sticks to OFF, indicating that the CCD unit has not returned to the home position. ) ( AF The CCD HP sensor sticks to ON, indicating that the CCD unit has stayed in the home position.

  • Page 153: Communications Errors (Not Applicable To Machines W/O Fax

    Communications Errors (Not applicable to machines w/o fax) If a communications error occurs, the machine emits an audible alarm (intermittent beeping) for approximately 4 seconds, displays the corresponding error message, and prints out the transmission verification report if the machine is in sending operation. VI - 7...
  • Page 154 n n n n Definition of Error Codes on the Communications List Calling Code 1 Code 2 Causes Wrong number called. Retrieval file error. Image data entry error. No dial tone detected before start of dialing. Busy tone detected before dialing. 2nd dial tone not detected.
  • Page 155 Code 1 Code 2 Causes EOR and NULL received. Effective command not received. Unable to reserve a command receiver memory. Image data file error. Compatibility [checking the NSF and DIS] Code 1 Code 2 Causes Remote terminal only with V.29 capability in 2400 or 4800 bps transmission.
  • Page 156 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 coincident.
  • Page 157 ID checking Code 1 Code 2 Causes Password plus "lower 4 digits of telephone number" not coincident. Password not coincident. Polling ID not coincident. Entered confidential mailbox ID uncoincident with the mailbox ID. Relay broadcasting ID not coincident. Entered retrieval ID uncoincident with that of the mailbox ID. DCN reception Code 1 Code 2...
  • Page 158 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 159 (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. Transmission canceled by pressing the Stop key (before completion of the G3 FAX negotiation). Transmission canceled by pressing the Stop key (after completion of the G3 FAX negotiation).
  • Page 160 Modem error details (Code 3) Code 3 Causes Timeout waiting for INFO0. Checksum error in INFO0. Timeout waiting for tone A or B. Timeout waiting for first phase reverse. Timeout waiting for probing cut-off tone. Timeout waiting for second phase reverse. Timeout waiting for end of probing.
  • Page 161 Code 3 Causes S-sequence finished before prediction in phase 3. Timeout waiting for S-Sbar in phase 3. Timeout waiting for S-Sbar in phase 3. Timeout waiting for S in phase 3. Training after TRN failure. Problem with S-sequence in phase 4. FED turned off in S-sequence in phase 4.
  • Page 162 (14) Machine error Code 1 Code 2 Causes Burn-in operation canceled by pressing the Stop key. Unrecoverable MODEM error. VI - 16...

  • Page 163: Troubleshooting

    TROUBLESHOOTING Introduction This section gives the service personnel some of the troubleshooting procedures to be followed if an error or malfunction occurs with the machine. 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 164 (3) All cables and harnesses are firmly connected. (4) None of the fuses are blown. Recording paper Check that: (1) A recommended type of recording paper is used. (2) The recording paper is not dampened. VI - 18...

  • Page 165: Troubleshooting Procedures

    Troubleshooting Procedures [ 1 ] Control panel related Trouble Check: (1) LCD shows nothing. Panel harness between the control panel PCB and relay PCB Main-relay (panel) harness between the relay PCB and main PCB Control panel PCB Low-voltage power supply PCB Main PCB (2) Control panel inoperative.

  • Page 166: 3 ] Communications Related

    [ 3 ] Communications related Trouble Check: (1) No tone is transmitted. Main PCB NCU PCB [ 4 ] Paper/document feeding related Trouble Check: (1) Neither "COPY: PRESS COPY" Sensors by using the maintenance-mode function code nor "FAX: NO. & START" 32.

  • Page 167: 5 ] Print-Image Related

    [ 5 ] Print-image related If the received or sent image has any problem, first make a copy with the machine. If the copied image is normal, the problem may be due to the remote terminal; if it is abnormal, proceed to the following checks: Trouble Action to be taken...
  • Page 168 Trouble Action to be taken (3) Light At the scanner Check the following components: - CCD unit - Main PCB At the printer side Replace the toner cartridge with a new one and print 4 to 5 pages. If the problem persists, proceed to the next step. Remove the toner cartridge and start printing.
  • Page 169 Trouble Action to be taken (5) Black and blurred vertical At the scanner stripes or band Check the following components: - CCD unit At the printer side Clean the paper path which may be contaminated with toner. Slide the wire cleaner to clean the corona wire inside the drum unit.
  • Page 170 Trouble Action to be taken (9) White vertical streaks At the scanner Check the following components: - CCD unit At the printer side Clean the laser beam window on the laser unit. Replace the toner cartridge. Replace the drum unit. (10) White horizontal stripes At the printer side Replace the drum unit.
  • Page 171 Trouble Action to be taken (12) Faulty image registration At the printer side (Leading edge of image Instruct the user not to load paper exceeding the limit on the starts too late on paper) paper cassette(s). Instruct the user to use the recommended types of paper. Replace the paper cassette(s).
  • Page 172 Trouble Action to be taken (15) Dirt back of paper At the printer side Clean the pressure roller in the heat-fixing unit. Replace the heat-fixing unit. Replace the drum unit. Replace the high-voltage power supply PCB. (16) Poor fixing At the printer side Instruct the user to use paper of the recommended weight (less than 36 lb./m Clean the toner sensors (LED and light-receiver).

  • Page 173: 6 ] Pc-Driven Or Video Capture-Driven Printing

    Trouble Action to be taken (20) Fading (black to white) At the printer side Replace the toner cartridge. Replace the high-voltage power supply PCB. (21) Gray background At the printer side Instruct the user to use paper of the recommended weight (less than 36 lb./m Clean the toner sensors (LED and light-receiver).

  • Page 174: Location Of High-Voltage Contacts And Grounding Contacts

    Location of High-voltage Contacts and Grounding Contacts VI - 28...
  • Page 175 VI - 29...
  • Page 176 MFC9800/MFC9700/DCP1400 MFC9880/MFC9860/MFC9760 Appendix 1. EEPROM Customizing Codes...
  • Page 177 EEPROM Customizing Codes This function allows you to customize the EEPROM according to language, function settings, and firmware switch settings. Operating Procedure (1) For machines w/ fax: To make the equipment enter the maintenance mode, press the Menu, *, 2, 8, 6, and 4 keys in this order. Within 2 seconds For machines w/o fax: To make the equipment enter the maintenance mode, press the Menu, 0, 2, 8, 6, and 4 keys in this order.
  • Page 178 n EEPROM Customizing Codes List Models Versions DCP1400 MFC9700 MFC9800 U.S.A. 0001 9001 9001 CANADA 0002 0002 Models Versions MFC9760 MFC9860 MFC9880 GERMANY 0003 0003 0003 U.K. 0004 0004 FRANCE 0005 0005 AUSTRALIA 0006 NORWAY 0007 BELGIUM 0008 0008 NETHERLANDS 0009 0009 SWITZERLAND...
  • Page 179 MFC9800/MFC9700/DCP1400 MFC9880/MFC9860/MFC9760 Appendix 2. Firmware Switches (WSW)
  • Page 180 WSW No. Function Reference Page WSW01 Dial pulse setting WSW02 Tone signal setting WSW03 PABX mode setting WSW04 TRANSFER facility setting WSW05 1st dial tone and busy tone detection WSW06 Pause key setting and 2nd dial tone detection WSW07 Dial tone setting 1 WSW08 Dial tone setting 2 WSW09...
  • Page 181 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 182 Selector 7: Switching between pulse (DP) and tone (PB) dialing, by the function switch This selector determines whether or not the dialing mode may be switched between the pulse (DP) and tone (PB) dialing by using the function switch. Selector 8: Default dialing mode, pulse (DP) or tone (PB) dialing This selector sets the default dialing mode (pulse dialing or tone dialing) which may be changed by the function switch.
  • Page 183 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 Min.
  • Page 184 Selectors 6 and 7: Dial tone detection in PABX 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 185 WSW04 (TRANSFER facility setting) Selector Function Setting and Specifications Earth function in transfer facility 0: Provided Not provided Not used. No. 5 6 200 ms Earth time length for earth 300 ms function 500 ms 700 ms No. 7 8 80 ms Break time length for flash 110 ms...
  • Page 186 WSW05 (1st dial tone and busy tone detection) Selector Function Setting and Specifications No. 1 2 3 0 0 0 3.5 sec. WAIT 0 0 1 7.0 sec. WAIT 0 1 0 10.5 sec. WAIT 1st dial tone detection 0 1 1 14.0 sec.
  • Page 187 Selectors 5 and 6: Busy tone detection in automatic sending mode These selectors determine whether or not the machine automatically disconnects a line upon detection of a busy tone in automatic sending mode. Setting selector 6 to "0" ignores a busy tone so that the machine does not disconnect the line. Setting selectors 5 and 6 to "0"...
  • Page 188 WSW06 (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 189 Selectors 1 through 3: Pause key setting and 2nd dial tone detection Selectors No WAIT is inserted even if the Pause key is pressed. If you press the Pause key during dialing, the machine will insert WAIT as defined in the above table. If the Pause key is pressed repeatedly, the machine inserts the specified WAIT multiplied by the number of depressions.
  • Page 190 WSW07 (Dial tone setting 1) Selector Function Setting and Specifications No. 1 2 Frequency band range Narrows by 10 Hz Initial value Widens by 10 Hz Line current detection 0: No 1: Yes No. 4 5 6 0 0 : -21 dBm 0 1 : -24 dBm...
  • Page 191 WSW08 (Dial tone setting 2) Selector Function Setting and Specifications No. 1 2 3 0 0 0 : 50 ms 0 0 1 : 210 ms 0 1 0 : 500 ms 1st dial tone detection time length 0 1 1 : 800 ms 1 0 0 : 900 ms...
  • Page 192 WSW09 (Protocol definition 1) Selector Function Setting and Specifications Frame length selection 0: 256 octets 1: 64 octets Use of non-standard commands 0: Allowed 1: Prohibited No. 3 4 times No. of retries 3 times 2 times 1 time T5 timer 300 sec.
  • Page 193 WSW10 (Protocol definition 2) Selector Function Setting and Specifications Switching of DPS, following the 0: No 1: Yes CML ON/OFF Time length from transmission of 0: 100 ms 1: 50 ms the last dial digit to CML ON Time length from CML ON to CNG 0: 2 sec.
  • Page 194 WSW11 (Busy tone setting) Selector Function Setting and Specifications Narrows by 10 Hz Frequency band range Initial value Widens by 10 Hz Not used. 1: 400-600/400-600 ms 1: 175-440/175-440 ms ON/OFF time length ranges (More than one setting allowed) 1: 100-1000/17-660 ms 1: 110-410/320-550 ms 1: 100-660/100-660 ms NOTE: WSW11 is not applicable in those countries where no busy tone detection is supported.
  • Page 195 WSW12 (Signal detection condition setting) Selector Function Setting and Specifications No. 1 1500 ms Min. OFF time length of calling 500 ms signal (Ci) 700 ms 900 ms No. 3 6 sec. Max. OFF time length of calling 7 sec. signal (Ci) 9 sec.
  • Page 196 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 197 WSW14 (AUTO ANS facility setting) Selector Function Setting and Specifications 13 Hz Frequency band selection 15 Hz (Lower limit) 23 Hz 20 Hz Frequency band selection 30 Hz (Upper limit) 55 Hz 70 Hz : 200 Hz Fixed to once Fixed to 2 times Fixed to 3 times Fixed to 4 times...
  • Page 198 WSW15 (REDIAL facility setting) Selector Function Setting and Specifications No. 1 5 minutes Selection of redial interval 1 minute 2 minutes 3 minutes No. 3 16 times 1 times No. of redialings 2 times 3 times 15 times Redialing for no response sent Redialing No redialing from the called terminal...
  • Page 199 WSW16 (Function setting 1) Selector Function Setting and Specifications Not used. CCITT superfine recommendation 0: OFF 1: ON Not used. Max. document length limitation 0: 400 cm 1: 90 cm Stop key pressed during reception 0: Not functional 1: Functional Selector 2: CCITT superfine recommendation If this selector is set to "1,"...
  • Page 200 WSW17 (Function setting 2) Selector Function Setting and Specifications No. 1 No alarm Off-hook alarm Always valid Valid except when 'call reservation' is selected. Not used. Calendar clock type U.S.A. type 1: European type Not used. Non-ring reception 1: ON Not used.
  • Page 201 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 calling station only...
  • Page 202 WSW19 (Transmission speed setting) Selector Function Setting and Specifications No. 1 No. 4 First transmission speed choice 2,400 bps for fallback 4,800 bps 7,200 bps 9,600 bps 12,000 bps Last transmission speed choice for fallback 14,400 bps V. 34 mode 0: Permitted 1: Prohibited V.
  • Page 203 WSW20 (Overseas communications mode setting) Selector Function Setting and Specifications EP* tone prefix 0: OFF 1: ON Overseas communications mode 0: 2100 Hz 1: 1100 Hz (Reception) Overseas communications mode 0: OFF 1: Ignores DIS once. (Transmission) Min. time length from reception of 100 ms CFR to start of transmission of 200 ms...
  • Page 204 WSW21 (TAD setting 1) Selector Function Setting and Specifications Not used. Erasure of message stored in the memory after the message 0: Yes 1: No transfer Selector 8: Erasure of message Setting this selector to "0" will erase the message recorded in the memory after the document retrieval feature transfers the message.
  • Page 205 WSW23 (Communications setting) Selector Function Setting and Specifications Starting point of training check 0: From the head of a series of zeros (TCF) 1: From any arbitrary point Allowable training error rate 0.5% Decoding error rate for transmission of RTN Not used.
  • Page 206 WSW24 (TAD setting 2) Selector Function Setting and Specifications Not used. Time length from CML ON to 4 sec. start of pseudo ring backtone 3 sec. transmission 2 sec. 1 sec. Not used. Selectors 3 and 4: Time length from CML ON to start of pseudo ring backtone transmission These selectors set the length of time from CML-ON up to the start of pseudo ring backtone transmission.
  • Page 207 WSW26 (Function setting 4) Selector Function Setting and Specifications Not used. Dialing during document reading into the temporary memory in in- 0: Disabled 1: Enabled memory message transmission No. 4 No. of CNG cycles to be detected (when the line is connected via the external telephone except in the external TAD mode) No.
  • Page 208 WSW27 (Function setting 5) Selector Function Setting and Specifications Definition of programmable key TEL key TEL/POLLING key Ringer OFF setting Not used. Detection of distinctive ringing pattern Not used. Toner save mode NOTE: Selector 1 takes effect only in models/versions having a TEL key. NOTE: Selector 4 is applicable only to the U.S.A.
  • Page 209 WSW28 (Function setting 6) Selector Function Setting and Specifications No. 1 2 3 0 0 0 0 dB 0 0 1 +1 dB Transmission level of DTMF high- 0 1 0 +2 dB band frequency signal 0 1 1 +3 dB 1 0 0 0 dB 1 0 1...
  • Page 210 WSW29 (Function setting 7) Selector Function Setting and Specifications Not used. Impedance switching control in 0: OFF 1: ON pulse dialing Beep when the memory area for 0: No 1: Yes the activity report becomes full NOTE: Selectors 7 and 8 are applicable to the European version only. Selector 8: Beep when the memory area for the activity report becomes full If this selector is set to "1,"...
  • Page 211 WSW31 (Function setting 9) Selector Function Setting and Specifications Not used. Default reduction rate for failure of 0: 100% 1: 75% (Letter) automatic reduction during 87% (A4) recording 95% (Legal) Not used. Minimum short-OFF duration in 0: 130 ms 1: 90 ms distinctive ringing Not used.
  • Page 212 WSW32 (Function setting 10) Selector Function Setting and Specifications Not used. No. 5 Standard Default resolution Fine Super fine Photo No. 7 Automatic Default contrast Super light Super dark Selectors 5 and 6: Default resolution These selectors set the default resolution which applies when the machine is powered up or completes a transaction.
  • Page 213 WSW33 (Function setting 11) Selector Function Setting and Specifications Not used. Report output of polled trans- 0: Yes mission requests Not used. NOTE: Selector 6 is not applicable to American versions.
  • Page 214 WSW34 (Function setting 12) Selector Function Setting and Specifications Not used. No. of CNG cycles to be detected No. 6 (when the line is connected via the machine or external telephone in the external TAD mode) No. 6 Number of DTMF tone signals for inhibiting the detection of CNG during external TAD operation CNG detection when the external...
  • Page 215 WSW36 (Function setting 14) Selector Function Setting and Specifications ECP* mode 0: ON Recovery from inactive PC 0: Disabled Enabled interface PC power-off recognition time 0: Normal Long Not used. Escape from phase C 0: Yes No. 6 7 8 0 0 0 : 0 (Not ignored) 0 0 1 :...
  • Page 216 WSW37 (Function setting 15) Selector Function Setting and Specifications Printout of the stored image data of an unsent document onto the error 0: No report Erasure of the stored image data of an unsent document at the time of 0: No the subsequent in-memory message transmission Not used.
  • Page 217 WSW38 (Function setting 16) Selector Function Setting and Specifications No. 1 Automatic Setting of the equalizer Fixed to 4 points Fixed to 16 points Sending level of guard tone at 0: Normal - 7 db Normal phase 2 Stepping down the transmission 0: 2400 bps 4800 bps speed at fallback each...
  • Page 218 WSW39 (Function setting 17) Selector Function Setting and Specifications No. 1 No. 5 2400 bps First transmission speed choice 4800 bps for fallback 7200 bps 9600 bps 12000 bps 14400 bps 16800 bps 19200 bps 21600 bps 24000 bps 26400 bps Last transmission speed choice 28800 bps for fallback...
  • Page 219 WSW40 (Function setting 18) Selector Function Setting and Specifications Not used. 0: Disabled 1: Enabled Automatic paper cassette choice in (Fixed to upper copying paper cassette) Not masking Masking No. 3 3429 symbols/sec No. 4 3200 symbols/sec Masking of symbol rate(s) No.
  • Page 220 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 221 WSW41 (Function setting 19) Selector Function Setting and Specifications No. 1 2 3 0 0 0 16 hours 0 0 1 24 hours 0 1 0 12 hours ON-duration of the fluorescent lamp 0 1 1 8 hours built in the CCD unit 1 0 0 4 hours 1 0 1...
  • Page 222 WSW42 (Function setting 20) Selector Function Setting and Specifications Incoming mail server POP* Incoming mail server SMTP* Internet-FAX forward function JBIG* coding system Disabled Enabled Alarm message when the corona Enabled Disabled wire abnormally emits ions Issue of a drum cleaning prompting Enabled Disabled sheet when the corona wire...
  • Page 223 WSW43 (Function setting 21) Selector Function Setting and Specifications Addition of a header (station ID) to FAX images to be sent to PCs having e-mail addresses No. 2 50 ms Wait time for PCFax reception (Class 2) and FPTS command 100 ms transmission 150 ms...
  • Page 224 WSW44 (Speeding up scanning-1) Selector Function Setting and Specifications Not used. No. 6 7 8 0 0 0 : Obtained compensation data ineffective 0 0 1 : 1 min. Effective time length of the white level 0 1 0 : 3 min.
  • Page 225 WSW45 (Speeding up scanning-2) Selector Function Setting and Specifications No. 1 2 3 0 0 0 : No automatic drawing-in 0 0 1 : 1 sec. 0 1 0 : 2 sec. Delay time from when documents 0 1 1 : 3 sec.
  • Page 226 WSW46 (Monitor of power ON/OFF state and parallel port kept at high) Selector Function Setting and Specifications No. 1 2 0 0 : Disabled 0 1 : Monitor SELECT IN Monitoring the PC ON/OFF state 1 0 : Monitor STROBE 1 1 : Monitor both SELECT IN and STROBE...
  • Page 227 WSW47 (Delay of FAX line disconnection) Selector Function Setting and Specifications Not used. No. 3 4 0 0 : 200 ms Delay of FAX line disconnection 0 1 : 400 ms when switching to the pseudo- ringing external telephone 1 0 : 700 ms 1 1 : 1000 ms...
  • Page 228 MFC9800/MFC9700/DCP1400 MFC9880/MFC9860/MFC9760 Appendix 3. Circuit Diagrams A. Main PCB (MFC9800/MFC9880/MFC9860/MFC9760) Main PCB (MFC9700/DCP1400) B. Relay PCB C. Engine PCB D. Network Control Unit (NCU) PCB E. Control Panel PCB F. Power Supply PCBs...
  • Page 229 A. Main PCB (1/6) (MFC9800/MFC9880/MFC9860/MFC9760)
  • Page 230 A. Main PCB (2/6) (MFC9800/MFC9880/MFC9860/MFC9760)
  • Page 231 A. Main PCB (3/6) (MFC9800/MFC9880/MFC9860/MFC9760)
  • Page 232 A. Main PCB (4/6) (MFC9800/MFC9880/MFC9860/MFC9760)
  • Page 233 A. Main PCB (5/6) (MFC9800/MFC9880/MFC9860/MFC9760)
  • Page 234 A. Main PCB (6/6) (MFC9800/MFC9880/MFC9860/MFC9760)
  • Page 235 A. Main PCB (1/6) (MFC9700/DCP1400)
  • Page 236 A. Main PCB (2/6) (MFC9700/DCP1400)
  • Page 237 A. Main PCB (3/6) (MFC9700/DCP1400)
  • Page 238 A. Main PCB (4/6) (MFC9700/DCP1400)
  • Page 239 A. Main PCB (5/6) (MFC9700/DCP1400)
  • Page 240 A. Main PCB (6/6) (MFC9700/DCP1400)
  • Page 241 B. Relay PCB...
  • Page 242 Engine PCB...
  • Page 243 NCU PCB (U.S.A./Canada)
  • Page 244 NCU PCB (Germany/United Kingdom/France/Norway/Belgium/ Netherlands/Switzerland/Ireland/Denmark/Austria/ Spain/Italy/Sweden)
  • Page 245 NCU PCB (Asia/Oceania) 1/2...
  • Page 246 NCU B53K479 ASSY NCU B53K479 ASSY ASSY ASIA W/O TEL OCEANIA W/O TEL ADRS. NAME NAME ZNR1 Not Assy ENC121D07A Not Assy 1/16W 0 Not Assy SH-124DZ Not Assy DTC123EK Not Assy 1SS120 JW15 Not Assy JW(10) JW29 Not Assy JW (5) JW31 JW (5)
  • Page 247 Control Panel PCB (MFC9800/MFC9860/MFC9880)
  • Page 248 Control Panel PCB 1/2 (DCP1400/MFC9760)
  • Page 249 Control Panel PCB 2/2 (DCP1400/MFC9760)
  • Page 250 Control Panel PCB 1/2 (MFC9700)
  • Page 251 Control Panel PCB 2/2 (MFC9700)
  • Page 252 Power Supply PCB (100-120V) Low-voltage power supply...
  • Page 253 Power Supply PCB (200-240V) Low-voltage power supply...
  • Page 254 Power Supply PCB High-voltage power supply...
  • Page 255 Jan. ’02 SM-FAX006 8C5505 Printed in Japan...

This manual is also suitable for:

Mfc9800Dcp1400Mfc9760Mfc9860Mfc9880

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