Brother MFC 7160C Service Manual
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Brother MFC 7160C Service Manual

Brother MFC 7160C Service Manual

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FACSIMILE EQUIPMENT
SERVICE MANUAL
MODEL:MFC 7150C/MFC 7160C
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Summary of Contents for Brother MFC 7160C

  • Page 1 FACSIMILE EQUIPMENT SERVICE MANUAL MODEL:MFC 7150C/MFC 7160C Enable Thumbnails Enable Book Marks Exit Acrobat Viewer...
  • Page 2 © Copyright Brother 1998 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.
  • Page 3 PREFACE This publication is a Service Manual covering the specifications, construction, theory of operation, and maintenance of the Brother facsimile equipment. It includes information required for field troubleshooting and repair--disassembly, reassembly, and lubrication--so that service personnel will be able to understand equipment function, to rapidly repair the equipment and order any necessary spare parts.

  • Page 4: General Description

    CHAPTER I. GENERAL DESCRIPTION...
  • Page 5 CONTENTS EQUIPMENT OUTLINE ..................I-1 1.1 External Appearance and Weight..............I-1 1.2 Components ....................I-1 SPECIFICATIONS ....................I-2...

  • Page 6: Equipment Outline

    EQUIPMENT OUTLINE External Appearance and Weight The figure below shows the equipment appearance and approximate dimensions. Weight: Machine proper Approx. 9 kg In package Approx. 14 kg Components The equipment consists of the following major components: I - 1...

  • Page 7: Specifications

    SPECIFICATIONS (1/3) Model MFC7150C MFC7160C Color White (1138) White (1138) PRINTER Engine/Type BY2 / Liquid ink jet BY2 / Liquid ink jet PPM Up to 6 ppm/Mono, Up to 4 ppm/Color (360x180) Up to 6 ppm/Mono, Up to 4 ppm/Color (360x180) Max.
  • Page 8 (2/3) Model MFC7150C MFC7160C Error Correction Mode (ECM) Transmission Speed (sec) Gray Scale 256 (Error Diffusion) 256 (Error Diffusion) Super Fine Yes (Send and Receive) Yes (Send and Receive) Multi-resolution TX Handset Speaker Phone Yes - Full duplex One-touch Dial 12 X 2 12 X 2 Speed Dial...
  • Page 9 (3/3) Model MFC7150C MFC7160C Message Center Voice-on-demand FAX Forwarding FAX Retrieval Message Center (PC MC) ICM Recording Time Fax-on-demand Voice-on-demand Fax & Voice Mail Box FAX Forwarding General/Additional Feature Energy Star Compliance Memory (Standard) 2 MB 4 MB Memory (Opt Upgrade) Simultaneous Operation Yes (PRINTER/FAX, PRINTER/SCAN, Yes (PRINTER/FAX, PRINTER/SCAN,...
  • Page 10 (Note) Paper Handling If you move the adjusters as shown below, the MFC7150C/MFC7160C or MFC-740 becomes capable of handling A4-size paper or letter-size paper, respectively. Loosen screws on the bottom of the right and left adjusters. To use A-4 size or letter-size paper, align the mark on each of the adjusters with the A4 or LTR marking on the bottom of the bin, respectively.

  • Page 11: Installation

    CHAPTER II. INSTALLATION...
  • Page 12 CONTENTS INSTALLING THE UPDATE DATA TO THE FACSIMILE EQUIPMENT....II-1...
  • Page 13 INSTALLING THE UPDATE DATA TO THE FACSIMILE EQUIPMENT If the program version is updated or the main PCB is replaced, install the update program onto the flash ROM of the main PCB. The program installation requires a host computer satisfying the following requirements: - CPU Pentium 75 or higher - RAM...
  • Page 14 Installing the update data onto the flash ROM of the facsimile equipment (1) Load the floppy disk which stores the update data and transfer utility into the floppy disk drive of your computer. (Or, copy the update data and transfer utility onto the same directory of the hard disk.) (2) Click the Start button, point to Programs, and then click MS-DOS Prompt to open an MS- DOS window.

  • Page 15: Theory Of Operation

    CHAPTER III. THEORY OF OPERATION...

  • Page 16: Table Of Contents

    CONTENTS OVERVIEW......................III-1 MECHANISMS...................... III-2 2.1 Scanner Mechanism ..................III-3 2.1.1 Document feeding and ejecting mechanism .......... III-4 2.1.2 Scanner ....................III-4 2.2 Ink Jet Printing Mechanism................III-5 2.2.1 Paper pulling-in, registration, feeding, and ejecting mechanisms... III-5 2.2.2 Ink jet printing and capping mechanisms ..........III-8 2.2.3 Purging mechanism ................

  • Page 17: Overview

    1. OVERVIEW III - 1...

  • Page 18: Mechanisms

    2. MECHANISMS The equipment is classified into the following mechanisms: n SCANNER MECHANISM – Document feeding and ejecting mechanism – Document scanning mechanism n INK JET PRINTING MECHANISM – Paper pulling-in, registration, feeding, and ejecting mechanisms – Ink jet printing and head capping mechanisms –...

  • Page 19: Scanner Mechanism

    Scanner Mechanism This mechanism consists of the document stacker, automatic document feeder (ADF), document feed roller ASSY, document ejection roller ASSY, and document sensors. (For details about the sensors, refer to Section 2.3.) If the operator sets documents on the document stacker and starts the scanning operation, the scanner motor rotates so that the ADF (which consists of the separation roller ASSY and ADF parts) feeds those documents into the equipment, starting from the bottom sheet to the top, page by page.

  • Page 20: Document Feeding And Ejecting Mechanism

    2.1.1 Document feeding and ejecting mechanism To feed and eject documents, the scanner motor rotates clockwise. It rotates the sun gear 19/55 counterclockwise so that the planet gear 23 ASSY transmits the torque to the gear 19/72 and its gear train. After completion of paper ejection, the scanner motor rotates counterclockwise in order to disengage the planet gear 23 ASSY from the gear 19/72.

  • Page 21: Ink Jet Printing Mechanism

    Ink Jet Printing Mechanism 2.2.1 Paper pulling-in, registration, feeding, and ejecting mechanisms The paper pulling-in, registration, feeding, and ejecting mechanisms are driven by a single paper feed motor which has two drive gears at both ends of the output shaft. III - 5...
  • Page 22 Paper pulling-in and registration mechanism The inner end of the motor output shaft drives the paper pulling-in mechanism. If the motor rotates clockwise, the rotational torque is transmitted via the gear train to the bin pull-in roller gear. The bin pull-in roller gear rotates once to pull in paper from the bin, a sheet at a time. Since the gear is a sector gear, it will stop when the toothless section comes to the joint with the mating idle gear 2.
  • Page 23 Paper feeding and ejecting mechanism If the paper feed motor rotates counterclockwise, the outer end of the motor output shaft drives the idle gear 720 via the PF timing belt. The paper feed gear L rotates clockwise to feed paper. The rotational torque is further transmitted via the paper ejection idle gear to the paper ejection roller gear.

  • Page 24: Ink Jet Printing And Capping Mechanisms

    2.2.2 Ink jet printing and capping mechanisms (1) Print head This equipment uses drop-on-demand ink jet printing. The print head has four ink-jet units for four color inks, each of which consists of 64 nozzles, 64 channels sandwiched by a pair of piezoelectric ceramic actuators (PZT), manifold, and filter.
  • Page 25 As the carriage holding the print head travels at the printing speed, the character generator sends print command pulses to the circuits driving the piezoelectric actuators embedded in the print head. For the head thermister and the head property EEPROM, refer to Section 2.3. (2) Ink cartridge The equipment uses four ink cartridges (black, yellow, cyan, and magenta) of disposable type to supply ink to the print head.
  • Page 26 (3) Head cap Shown below is a head cap which prevents the nozzles of the print head from drying up when they are not in use. Upon completion of printing, the carriage travels to the right and moves the head cap provided on the purge unit together.

  • Page 27: Purging Mechanism

    2.2.3 Purging mechanism The purging mechanism is driven by the paper feed motor located at the left side of the main frame. The rotation of the paper feed motor is transmitted to the paper feed roller. At the right end of the paper feed roller is the PF gear (R) which is always engaged with the purge gear 1. The rotational torque is transmitted via the purge gear 2 to the purge gear 3.
  • Page 28 The purge cam is so designed that: the carriage lock pops out to lock the carriage before purging and pops in before cleaning with the wiper, the purge cap comes out and becomes pressed against the nozzle ends of an ink-jet unit, the pump works to draw out ink from the head nozzles and drains it into the ink absorbers, the head wiper comes out to clean the nozzle surface.

  • Page 29: Carriage Drive Mechanism

    2.2.4 Carriage drive mechanism The carriage motor controls horizontal motion. The motor rotation is transmitted via the motor pulley to the timing belt. The carriage, which is supported and guided by the carriage rail, is secured to the timing belt. Clockwise and counterclockwise rotations of the carriage motor move the carriage to the right and left, respectively.

  • Page 30: Sensors And Actuators

    Sensors and Actuators This equipment has the following sensors and thermister. Sensor name Type Located on Hook switch sensor Mechanical switch Hook switch PCB in the handset mount Cover sensor Photosensor Main PCB Bin cover sensor Photosensor Main PCB Registration sensor Photosensor Main PCB Paper width sensor...
  • Page 31 • Head thermister which detects the temperature of the print head. According to the signal from this thermister, the control circuitry regulates the drive voltage applied to the head’s piezoelectric ceramic actuators since the viscosity of the ink varies depending upon the temperature.
  • Page 32 Location of Sensors and Actuators III - 16...

  • Page 33: Control Electronics

    3. CONTROL ELECTRONICS Configuration The hardware configuration of the facsimile equipment is shown below. Configuration of Facsimile Equipment III - 17...

  • Page 34: Main Pcb

    Main PCB The main PCB, which is the nucleus controlling the entire operation of the equipment, consists of a CPU, gate array, memories, MODEM, motor drive circuitry, sensor detection circuitry, and analog circuits for scanning and printing. Block Diagram of Main PCB III - 18...
  • Page 35 MFC7150C MFC7160C/MFC-740 III - 19...

  • Page 36: Ncu Pcb

    NCU PCB The NCU PCB switches the communications line to telephone or built-in MODEM, under the control of the main PCB. MFC7150C/MFC7160C III - 20...
  • Page 37 MFC-740 III - 21...

  • Page 38: Control Panel Pcb

    Control Panel PCB The control panel PCB and the main PCB communicate with each other by serially transmitting commands and data. The control panel unit consists of a gate array, an LCD and LEDs, which are controlled by the gate array according to commands issued from the control CPU on the main PCB.

  • Page 39: Power Supply Pcb

    Power Supply PCB The power supply uses the switching regulator to generate DC power (+24V, +5V, and HVDD) from a commercial AC power line. The +24V source is stabilized and fed to the motors and solenoid for feeding documents and recording paper, as well as to the LED array of the CIS unit.
  • Page 40 CHAPTER IV. DISASSEMBLY/REASSEMBLY, LUBRICATION AND ADJUSTMENT...
  • Page 41 CONTENTS DISASSEMBLY/REASSEMBLY ................IV-1 Safety Precautions....................IV-1 Tightening Torque List ..................IV-2 Preparation ......................IV-4 How to Access the Object Component ............... IV-4 Disassembly Order Flow ..................IV-5 Ink Cartridges ....................IV-6 Print Head Unit ....................IV-8 Bin ......................... IV-12 ROM Cover ....................
  • Page 42 1.26 Paper Feed Motor ..................IV-64 1.27 Top Cover Support L and Grounding Plate L ..........IV-65 1.28 Carriage Motor Enclosure and Grounding Plate R ......... IV-66 1.29 Encoder Strip ....................IV-67 1.30 Purge Unit ..................... IV-68 1.31 Paper Ejection Roller ..................IV-70 1.32 Main Frame ....................

  • Page 43: Disassembly/Reassembly

    DISASSEMBLY/REASSEMBLY 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 replacing parts or units. When having access to the power supply, be sure to unplug the power cord from the power outlet. (2) Be careful not to lose screws, washers, or other parts removed for parts replacement.

  • Page 44: Tightening Torque List

    Tightening Torque List Location Screw type Q'ty Tightening torque Loosening torque (kg•cm) (kg•cm) ADF parts Taptite, pan B M3x6 4 ±1 2 to 6 Panel rear cover Taptite, cup B M3x8 6 ±1 2 to 6 Front cover Taptite, cup B M4x12 10 ±2 3 to 6 Cover R...
  • Page 45 Location Screw type Q'ty Tightening torque Loosening torque (kg•cm) (kg•cm) Purge unit Screw, pan (washer) M3x6DB 7 ±2 Min. 2 Paper ejection roller Screw, pan (washer) M2.6x8DB 3 ±1 Min. 0.5 Main frame Taptite, cup B M4x12 10 ±2 Min. 3 Cover lock (leaf spring) Screw, pan (washer) M3x6DB 4 ±1...

  • Page 46: Preparation

    Preparation Prior to proceeding to the disassembly procedure, (1) Unplug - the modular jack of the telephone line, - the modular jack of the curled cord (and remove the handset), - the PC interface cable, and - the modular jack of an external telephone set if connected. (Not shown below.) (2) Remove - the dust cover, - the paper wire extension...

  • Page 47: Disassembly Order Flow

    Disassembly Order Flow IV - 5...

  • Page 48: Ink Cartridges

    Ink Cartridges During disassembly jobs (except when removing the print head), all of the four ink cartridges should be kept in place. The following ink cartridge replacement procedure should apply only when you replace ink cartridges. When replacing the print head, do not apply this procedure but the procedure given in Section 1.2.
  • Page 49 (4) Take out the ink cartridge from the print head. NOTE: When handling ink cartridges, do not touch their orifices which may stain your hands or clothing with ink. (5) Load a new or removed ink cartridge. Be sure to snap it into place. NOTE: When using a new cartridge, first open the cartridge bag, take out the cartridge, and remove the sealing tape gently.

  • Page 50: Print Head Unit

    Print Head Unit During disassembly jobs (except when removing the carriage rail or carriage ASSY), the print head and all the four ink cartridges should be kept in place. (1) Plug the power cord into a wall socket. (2) Open the top cover and then press the Ink Management key. (3) Press the 3 key.
  • Page 51 (5) Remove all ink cartridges, one at a time. NOTE: When handling ink cartridges, do not touch their nozzles which may stain your hands or clothing with ink. (6) Pull the tabs of the print head unit to the front in order to release the rear edge of the print head unit from the lock provided on the carriage.
  • Page 52 (7) If the head cap has collected ink, clean it with a head cleaner. If the surrounding parts are stained with ink, wipe them off with a clean cloth. (8) To install a new (or removed) print head unit, take off the yellow head nozzle seal and then put the print head unit onto the carriage, taking care not to touch the control board provided on the rear side of the print head.
  • Page 53 (14) The equipment automatically carries out purging operation for each ink-jet unit of the print head. PLEASE WAIT CLEANING CYAN CLEANING CYAN (Steps (15) through (18) given below will be skipped if you have reinstalled the removed print head unit.) (15) Upon completion of purging operation, the following messages appear alternately: TEST PRINT TEST PRINT...

  • Page 54: Bin

    (1) Slightly pull up the rear of the bin to release it from two latches "A," then lift up the bin. IV - 12...

  • Page 55: Rom Cover

    ROM Cover (1) Lift up the locking arm with the tip of a flat screwdriver or spring hook and then slide the ROM cover to the rear. (2) Take out the ROM cover. IV - 13...

  • Page 56: Control Panel Assy

    Control Panel ASSY (1) Slightly open the control panel ASSY. (2) Push the right and left arms of the control panel ASSY outwards (in the direction of arrow •) with your thumbs and open the control panel ASSY further (arrow ‚) to unhook those arms from bosses "x"...

  • Page 57: Panel Rear Cover And Control Panel

    Panel Rear Cover and Control Panel (1) Place the control panel ASSY upside down. If you do not need to remove the ADF parts, CIS shield film 1, antistatic brush, shield film, document pressure bar, or document rear sensor actuator, skip to step (6), (2) To remove the ADF parts (spring plates, separation rubber and anti-vibration rubber), remove the screw.
  • Page 58 (6) Remove the two screws from the panel rear cover. (7) Unhook the panel rear cover from eight "X" latches provided on the control panel and lift up the panel rear cover. (8) Fully turn the document front sensor actuator to the rear and lift it up. (9) Unhook the document sensor PCB from two "Y"...
  • Page 59 (12) As shown below, insert the tip of a flat screwdriver under clamp "A" from the rear and push up clamp "A" slightly to release the LCD, and then take out the LCD while pulling the LCD flat cable gently. NOTE: Do not take out the LCD except when the LCD is defective and requires replacement.

  • Page 60: Document Feed Roller Assy And Document Ejection Roller Assy

    Document Feed Roller ASSY and Document Ejection Roller ASSY (1) Lightly push down arm rib "a" and shift the document feed roller ASSY to the right and upwards. (2) Lightly push down arm rib "b" and shift the document ejection roller ASSY to the right and upwards, without removing the shield film.
  • Page 61 Front Cover and Battery ASSY* (*MFC7160C/MFC-740 only) (1) Remove the two screws from the front cover. (2) Pull out the front cover towards you. (3) MFC7160C/MFC-740: To replace the battery ASSY (Ni-MH battery), plug the power cord of the facsimile equipment into a power outlet, disconnect the battery harness from the main PCB, and take out the battery ASSY from the lower cover.

  • Page 62: Cover R, Speaker, And Inner Cover R

    Cover R, Speaker, and Inner Cover R (1) Disconnect the speaker harness from the main PCB and take it out from the cable guides. IV - 20...
  • Page 63 (2) Pull the tab of the spacer R towards you (in the direction arrow •), slide the spacer R to the left and take it out towards you (arrow ‚). (3) Remove the screw from the rear side of the cover R. (4) Push the cover R to the rear and then take it off to the right while pulling out the speaker harness.
  • Page 64 (5) Remove the two screws, remove the tape, and take out the speaker. (6) Slide the inner cover R to the front to release its hooks from the top cover support R, pull it inwards, and then take it out while tilting it to the front. IV - 22...
  • Page 65 Reassembling Notes • Route the leads of the speaker harness so that they are separated by the boss as illustrated on the previous page. • To reinstall the cover R, follow the steps below. 1) Fit the inner cover R over the top cover support R and push it to the rear fully. 2) Put the cover R into place and pull it to the front.

  • Page 66: Cover L, Handset Mount, And Inner Cover L

    1.10 Cover L, Handset Mount, and Inner Cover L (1) Disconnect the hook switch harness from the main PCB. IV - 24...
  • Page 67 (2) Slide the spacer L to the right and take it out towards you. (3) Remove the screw from the rear side of the cover L. (4) Push the cover L to the rear and then take it off to the left while pulling out the hook switch harness.
  • Page 68 (5) Remove the two screws from the inside of the cover L. (6) Twist the handset mount so that it tilts over to the left and its upper end works out of the cover (7) Slide the inner cover L to the front to release its hooks from the top cover support L, pull it inwards, and then take it out.

  • Page 69: Top Cover

    1.11 Top Cover (1) Disconnect the scanner motor harness from the main PCB and take it out from the cable guides. (2) Disconnect the panel-main harness and CIS harness from the main PCB, then take them out from the cable guides, bosses, and cable clip. IV - 27...
  • Page 70 (3) Pull out the scanner motor harness and remove the tape at the right side of the equipment. (4) Remove the four screws from the top cover support R. (5) Lift up the rear edge of the top cover to release the lock. (6) While holding the front edge of the top cover, slightly pull the top cover support R towards you to release it from the three bosses provided on the lower cover and then take it out to the right together with the top cover.
  • Page 71 Reassembling Notes • When reinstalling the top cover, follow the steps below. Check that the panel-main harness, CIS harness, and scanner motor harness are correctly routed (see the illustration given on the previous page). That is, the upper end of the panel-main harness (and CIS harness if the scanner frame ASSY is removed) should come out through the cutout provided in the scanner frame.
  • Page 72 Secure the top cover support R with four screws. It should be inside the grounding plate of the bottom plate. Route the scanner motor harness through the cutout provided in the right boss of the top cover and tape it down, as shown on the previous page. Route the panel-main harness and CIS harness through the cable guides and hold them with the cable clip as shown on page IV-27.

  • Page 73: Scanner Frame Assy

    1.12 Scanner Frame ASSY You may remove the scanner frame ASSY from the top cover without taking out the top cover from the equipment. (1) You can remove the following parts from the top of the scanner frame ASSY without taking out the ASSY from the top cover.
  • Page 74 (2) Remove the two screws from the scanner frame ASSY. (3) Lightly lift up the rear edge of the scanner frame ASSY and hold up the ASSY (and disconnect the CIS harness if the CIS is mounted). IV - 32...
  • Page 75 (4) Turn the scanner frame ASSY upside down. (5) Remove the screw from the scanner motor, take off the motor, and disconnect the scanner motor harness. (6) Take off the scanner grounding leaf spring by removing the screw. (7) Slightly push down the arm (in the direction of arrow •) and shift the separation roller gear to the right (arrow ‚) when viewed from the rear.
  • Page 76 (9) Take off the pinch roller leaf spring by removing the screw. Then remove the pinch rollers and shaft. (10) Take off the control panel locks (leaf springs) by removing the screws. (11) Remove the pressure roller leaf springs by pulling them in the direction of arrows • and ‚ in this order as shown below.
  • Page 77 (12) Push down the CIS side spring to release it from the latch, then pull it out to the right (when viewed from the rear). Reassembling Notes • When reinstalling the CIS unit, first connect the CIS harness, insert the left end under the arm of the scanner frame, put the CIS unit into the scanner frame, and move it to the right (see the illustration given on page IV-32).

  • Page 78: Star Wheel Holder Assy

    1.13 Star Wheel Holder ASSY (1) Move the carriage to either end of its travel. (2) Insert the tip of a flat screwdriver between each latch of the star wheel holder ASSY and the main frame from the front and lightly twist it to unhook the latch while pulling the star wheel holder ASSY to the rear.

  • Page 79: Platen And Its Frame

    1.14 Platen and Its Frame (1) Make sure that the carriage is placed in the home position. (2) Remove the screw from the platen frame. (3) Slightly move the platen frame to the left and take it out. (4) Unhook the six latches of the platen from the platen frame. IV - 37...

  • Page 80: Flushing Foams

    1.15 Flushing Foams After the main PCB is replaced with any other one, you need to replace the flushing foams with new ones. (1) Pull out the upper flushing foam and two lower flushing foams from the lower cover. NOTE: Use vinyl gloves to prevent your hands from becoming dirty. NOTE: For the removal of the flushing foams pack, refer to Subsection 1.33.

  • Page 81: Rear Cover

    1.16 Rear Cover (1) Remove the two screws from the rear cover. (2) Lift up the rear cover. IV - 39...

  • Page 82: Ink Absorbers

    1.17 Ink Absorbers After the main PCB is replaced with any other one, you need to replace the ink absorbers with new ones. (1) Pull out the ink absorbers from the lower cover. NOTE: Use vinyl gloves to prevent your hands from becoming dirty. (2) If the lower cover or the surrounding parts are stained with ink, wipe them with a waste cloth.

  • Page 83: Frame Cover, Purge Lever Cover, Cover Sensor Actuator 2, And Paper Pressure Holders

    1.18 Frame Cover, Purge Lever Cover, Cover Sensor Actuator 2, and Paper Pressure Holders (1) Insert the tip of a flat screwdriver through a hole provided in the top of the frame cover and press the latch to the rear (in the direction of arrow •), then shift the frame cover to the right to release the four pawls.
  • Page 84 (2) Remove the screw that secures the cover lock (leaf spring) from the main frame, and then take it off. (3) Remove the purge lever cover by unhooking the latches. IV - 42...
  • Page 85 (4) Pull the top of the cover sensor actuator 2 to the left to unhook the latch from the lower cover, and then lift it up. IV - 43...
  • Page 86 (5) Remove the paper pressure holders and springs according to the instructions below. Ÿ Start the removal work from the right-hand side holder and work your way over to the left- hand side, when viewed from the rear. Ÿ Unhook the top end of the spring from the main frame (in the direction of arrow •), shift the paper pressure holder to the right and pull it out to the rear (arrow ‚).
  • Page 87 Reassembling Notes • The paper pressure holders to be placed in the 1st and 5th positions are different in shape with each other and different from other three. • After installing the paper pressure holders and their springs, pull up the release lever (blue) to check that it works normally.

  • Page 88: Paper Feed Gear L, Pf Timing Belt, Idle Gear 720, And Tension Plate Assy

    1.19 Paper Feed Gear L, PF Timing Belt, Idle Gear 720, and Tension Plate ASSY (1) Remove the retaining ring E8, paper feed gear L, and spacer from the left side of the main frame. (2) Remove the tension spring to release the tension plate ASSY. (3) Remove the PF timing belt from the idle gear 720 and paper feed motor gear.
  • Page 89 3) Put the PF timing belt around the paper feed motor gear and the idle gear 720. 4) Turn the tension plate ASSY clockwise to apply tension to the PF timing belt (in the direction of arrow •) and set the tension spring onto the three hooks (arrow ‚). 5) Secure the tension plate ASSY to the main frame with screw "a"...

  • Page 90: Gear Cover, Gear Frame Assy (With Solenoid), And Pf Arm Assy

    1.20 Gear Cover, Gear Frame ASSY (with Solenoid), and PF Arm ASSY (1) Remove the screw from the gear cover, slightly pull the right rear corner of the gear cover to the rear to release boss "a" and take out the gear cover. (2) Disconnect the solenoid harness from the main PCB.
  • Page 91 (3) Take out the gear frame ASSY by removing two screws "x." (4) Pull the tab outwards and remove the solenoid from the gear frame ASSY. The solenoid actuator, spring, and pin also come off. IV - 49...
  • Page 92 (5) Remove the PF arm ASSY by pulling its pawl outwards. Also remove the PF idle gear. Reassembling Notes • When setting gears onto the shafts on the main frame, apply grease to those shafts. (Refer to Section 2.) • When setting the tube onto the solenoid actuator, make the end of the tube flush with that of the boss of the solenoid actuator or allow a maximum of 0.5 mm protrusion of the tube from the boss, as illustrated on the previous page.

  • Page 93: Paper Feed Roller

    1.21 Paper Feed Roller (1) Make sure that the carriage is placed in the home position. (2) Remove the retaining ring E8 from the left end of the paper feed roller shaft inside the main frame. (3) Pull the paper feed roller to the left to release its right end from the main frame and take it out.

  • Page 94: Bottom Plate, Power Supply Pcb, And Video Pcb

    1.22 Bottom Plate, Power Supply PCB, and Video PCB (1) Remove the front cover if installed. (Refer to Section 1.8.) (2) For the MFC7160C/MFC-740, take the battery ASSY out of the supports at the front of the lower cover. (3) Disconnect the following eight harnesses from the main PCB: •...
  • Page 95 (5) Disconnect the solenoid harness. IV - 53...
  • Page 96 (6) Check that the frame cover is installed on the top of the main frame. If it has been removed, reinstall it. This prevents the cover sensor actuator 2 and cover lock (leaf spring) from bending or deforming. Then turn the facsimile equipment upside down as shown below. (7) Remove the eight screws (three "a"...
  • Page 97 (10) Remove the two screws from the power supply PCB and one screw from the grounding terminal. Then disconnect the power supply PCB from the main PCB. (11) Remove the screw from the video PCB and disconnect the PCB from the main PCB. Reassembling Notes •...
  • Page 98 • Before reinstalling the bottom plate, turn the bin cover sensor actuator and cover sensor actuator 1 to the front of the equipment (in the direction of arrow "x" in the illustration given below). If the cover sensor actuator 2 has been removed, the cover sensor actuator 1 tilts out of the sensor supports.

  • Page 99: Ncu Pcb And Main Pcb

    1.23 NCU PCB and Main PCB (1) Take off the shield plate B by removing the screw "a." (2) Take off the NCU bracket (which holds the NCU PCB) by removing the screw "b." (3) Take off the NCU PCB from the NCU bracket by removing the screw. IV - 57...
  • Page 100 (4) Remove the two screws from the main PCB and two screws from the Centronics interface connector, and then take off the main PCB. IV - 58...
  • Page 101 Reassembling Notes • When setting the main PCB on the bottom plate, first fit the two holes over bosses "z" provided on the bottom plate and then secure the PCB with the screws. • When setting the NCU PCB to the NCU bracket, fit its edges onto "b" and "c" and into "a" and "d"...
  • Page 102 Setting up the main PCB after replacement - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Important - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - NOTE: Before starting the following procedure, make sure that the print head unit is installed.

  • Page 103: Sensor Actuators (Cover Sensor Actuator 1, Paper Width Sensor Actuator, Paper Ejection Sensor Actuator, Bin Cover Sensor Actuator, And Registration Sensor Actuator

    1.24 Sensor Actuators (Cover Sensor Actuator 1, Paper Width Sensor Actuator, Paper Ejection Sensor Actuator, Bin Cover Sensor Actuator, and Registration Sensor Actuator) (1) Remove the following sensor actuators: • Cover sensor actuator 1 (Pull it down and lift it up. If the cover sensor actuator 2 is installed and the top cover is closed, open the top cover so that the actuator 2 can be pushed down.) •...
  • Page 104 IV - 62...

  • Page 105: Purge Gear Frame

    1.25 Purge Gear Frame (1) Make sure that the carriage is placed in the home position. (2) Loosen screw "a." (3) Remove screws "b." (4) Take off the purge gear frame together with the purge gear 3, spring, and spacer. IV - 63...

  • Page 106: Paper Feed Motor

    1.26 Paper Feed Motor (1) Release the paper feed motor harness from the tape and cable guides. (2) Place the lower cover rightside up. (3) Remove screw "b" and pull out the motor shield. (4) Remove screw "a" and pull out the paper feed motor harness to take out the paper feed motor.

  • Page 107: Top Cover Support L And Grounding Plate L

    1.27 Top Cover Support L and Grounding Plate L (1) Take off the top cover support L by removing the three screws. (2) Take off the grounding plate L by removing the screw. IV - 65...

  • Page 108: Carriage Motor Enclosure And Grounding Plate R

    1.28 Carriage Motor Enclosure and Grounding Plate R Only when you need to remove the carriage motor, remove the carriage motor enclosure and grounding plate R. (1) Remove the three screws, slightly lift up the carriage motor enclosure, and take it off to the rear.

  • Page 109: Encoder Strip

    1.29 Encoder Strip (1) Take off the encoder strip by removing its spring. NOTE: Take care not to scratch or damage the encoder strip. Reassembling Notes • Pass the encoder strip through the back of the carriage so that the strip will route as illustrated above and the -marked end comes to the right.

  • Page 110: Purge Unit

    1.30 Purge Unit Once removed, the components given in Subsections 1.30 Caution through 1.34 require special adjustment jigs for reassembly. Refer to Section 3, “ADJUSTMENT” in this chapter. (1) Move the carriage to the left and out of the home position. NOTE: If the carriage is locked in the home position, you need to turn the purge sector gear counterclockwise (when viewed from the right) to retract the carriage lock.
  • Page 111 (2) Remove the two screws from the right side of the purge unit. (3) Take out the purge cam HP switch harness from the cable guides provided on the lower cover. (4) Lift the purge unit up and out of the lower cover and main frame. (5) Take off the purge cam HP switch from the purge unit by pulling the unit's latches outwards.

  • Page 112: Paper Ejection Roller

    1.31 Paper Ejection Roller Once removed, the components given in Caution Subsections 1.30 through 1.34 require special adjustment jigs for reassembly. Refer to Section 3, “ADJUSTMENT” in this chapter. (1) At the left end of the paper ejection roller, remove the paper ejection idle gear by pulling its pawl outwards.

  • Page 113: Main Frame

    1.32 Main Frame Once removed, the components given in Subsections 1.30 Caution through 1.34 require special adjustment jigs for reassembly. Refer to Section 3, “ADJUSTMENT” in this chapter. On the main frame are the carriage rail, carriage ASSY and carriage motor which can be removed without taking off the main frame from the lower cover.

  • Page 114: Flushing Foams Pack And Ink Absorbers Pack

    1.33 Flushing Foams Pack and Once removed, the components Caution Ink Absorbers Pack given in Subsections 1.30 through 1.34 require special adjustment jigs for reassembly. Refer to Section 3, “ADJUSTMENT” in this chapter. (1) Lift up the flushing foams pack. (2) Lift up the ink absorbers pack.

  • Page 115: Carriage Rail, Carriage Assy, And Carriage Motor

    1.34 Carriage Rail, Carriage ASSY, Once removed, the components Caution and Carriage Motor given in Subsections 1.30 through 1.34 require special adjustment jigs for reassembly. Refer to Section 3, “ADJUSTMENT” in this chapter. (1) Take off the idle pulley stopper by removing the screw. (2) While pushing the idle pulley holder to the right (in the direction of arrow •), remove the timing belt from the carriage motor gear (arrow ‚).
  • Page 116 (3) Unhook the lock of the FFC holder and remove the holder by pushing it from the rear. This releases the head flat cables. (4) Take off the upper flat core and the head flat cables from the core support. Then remove the core support.
  • Page 117 (5) Make sure that the ink cartridges and print head have been removed. (6) Remove the screw from the eccentric bearing L and take off the bearing lock. Then turn the bearing clockwise (when viewed from the left) until its pawl becomes aligned with the cutout provided in the main frame, and then pull out the bearing L and carriage rail.
  • Page 118 (9) Remove the two screws and tape, then take off the carriage motor. Reassembling Notes • When installing the carriage rail, loosen the screw on the eccentric bearing R to adjust its position. • If you replace the carriage ASSY, be sure to set the sensing reference levels of the black ink empty sensor (function code: 57).

  • Page 119: Lubrication

    LUBRICATION Apply the following lubricants to the lubrication points as illustrated below. Lubricant amount Lubricant type Half of a rice-sized (Manufacturer) Thin coat of grease Rice-sized pinch Bean-sized pinch pinch of grease Approx. 20 mm with brush (1 mm of grease (6 mm of grease (12 mm (3 mm Molykote EM-30LG or -30L...

  • Page 120: 2 ] Control Panel Locks

    [ 2 ] Control panel locks [ 3 ] Scanner frame ASSY and separation roller gear IV - 78...

  • Page 121: 4 ] Cover Lock (Leaf Spring

    [ 4 ] Cover lock (leaf spring) [ 5 ] Top cover IV - 79...

  • Page 122: 6 ] Gear Frame Assy

    [ 6 ] Gear frame ASSY [ 7 ] PF arm ASSY and tension plate ASSY IV - 80...

  • Page 123: 8 ] Shafts On The Left Side Of The Main Frame

    [ 8 ] Shafts on the left side of the main frame [ 9 ] Main frame IV - 81...

  • Page 124: 10 ] Purge Gear Frame

    [ 10 ] Purge gear frame [ 11 ] Purge unit IV - 82...

  • Page 125: 12 ] Idle Pulley Holder

    [ 12 ] Idle pulley holder [ 13 ] Lower cover IV - 83...

  • Page 126: Adjustment

    ADJUSTMENT The adjustment jobs should be done on a flat, plain surface. Purge Unit Front-to-rear Adjustment If you have removed the purge unit, you need to adjust the position of the purge unit relative to the carriage rail by using the purge unit adjuster. If you have removed also the carriage rail or carriage ASSY, first adjust the head-platen gap (see Section 3.2) and then proceed to this purge unit adjustment.
  • Page 127 Adjustment procedure (1) Move the carriage to the left end of the carriage rail. (2) Put the removed purge unit back into place, and then temporarily tighten the two screws at the right side. (3) Slightly move the head cap to the right with a flat screwdriver (in the direction of arrow •) so that the head cap rail can be seen as illustrated below, pinch the upper end of the clip (arrow ‚) to open its lower end, and make the clip catch the head cap rail (arrow ƒ).
  • Page 128 (4) Fit the purge unit adjuster over the carriage rail as shown below. NOTE: Take care not to scratch or damage the carriage rail. (5) While pressing the knob to the rear, turn it counterclockwise (in the direction of arrow „) in order to clamp the purge unit adjuster to the top of the main frame.

  • Page 129: Head-Platen Gap Adjustment

    Head-platen Gap Adjustment If you have removed the carriage rail or carriage ASSY, you need to adjust the gap between the print head and the platen by using the gap adjustment jig. Gap adjustment jig The gap adjustment jig consists of the reference jig, gap reference gauge and surface plate as illustrated below.
  • Page 130 Adjustment procedure (1) Place the facsimile equipment on a flat, firm surface. (2) Secure the carriage rail and carriage ASSY to the main frame. (3) Move the carriage to the left end of its travel. NOTE: If the carriage is locked in the home position, rotate the idle gear 720 at the left side of the main frame to retract the carriage lock.
  • Page 131 IV - 89...
  • Page 132 (6) Put the gap reference gauge on the surface plate. Check the small dials to see that each needle points to the vicinity of 1. If either of the needles deviates significantly from 1, turn the corresponding vernier dial. One turn of the vernier dial rotates the needle of the small dial by one graduation.
  • Page 133 (7) Gently take off the gap reference gauge from the surface plate and hold the handle as shown below. (8) While pulling up the knob (in the direction of arrow •) to prevent the probes from striking against facsimile components, first slightly tilt the gap reference gauge to the rear, hook its support in the cutout provided in the main frame, bring the probes into contact with the reference jig preset in step (5) and then tilt it towards you (arrow ‚).
  • Page 134 (9) Loosen the screws on the eccentric bearings (R) and (L), and then turn those bearings so that the needles of the small dials point to the vicinity of 1 and those of the vernier dials point to zero. (10) Tighten the screws on the eccentric bearings. After tightening these screws, the needles of the vernier dials may be deflected from zero.

  • Page 135: Maintenance Mode

    CHAPTER V. MAINTENANCE MODE...
  • Page 136 CONTENTS ENTRY INTO THE MAINTENANCE MODE............V-1 LIST OF MAINTENANCE-MODE FUNCTIONS ........... V-2 DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS ....V-4 EEPROM Parameter Initialization............... V-4 Printout of Scanning Compensation Data ........... V-5 ADF Performance Test................V-7 Test Pattern 1..................... V-8 Firmware Switch Setting and Printout ............V-9 Operational Check of LCD................

  • Page 137: Entry Into The Maintenance Mode

    ENTRY INTO THE MAINTENANCE MODE MFC7150C/MFC7160C: To make the facsimile equipment enter the maintenance mode, press the Function, *, 2, 8, 6, and 4 keys in this order. Within 2 seconds MFC-740: To make the facsimile equipment enter the maintenance mode, press the Menu, *, 2, 8, 6, and 4 keys in this order.

  • Page 138: 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-4) Printout of Scanning Compensation Data 3.2 (V-5) ADF* Performance Test 3.3 (V-7) Test Pattern 1 3.4 (V-8) Firmware Switch Setting 3.5 (V-9) Printout of Firmware Switch Data 3.5 (V-50) Operational Check of LCD...
  • Page 139 - - - - - - - - - - - - - - - - - - - - - - - - - - IMPORTANT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Basically, the maintenance-mode functions listed on the previous page should be accessed by service personnel only.

  • Page 140: Detailed Description Of Maintenance-Mode Functions

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

  • Page 141: Printout Of Scanning Compensation Data

    Printout of Scanning Compensation Data Function The equipment prints out the white and black level data for scanning compensation. Operating Procedure Do not start this function merely after powering on the equipment but start it after carrying out a sequence of scanning operation. Unless the equipment has carried out any scanning operation, this function cannot print out correct scanning compensation data.
  • Page 142 Scanning Compensation Data List V - 6...

  • Page 143: Adf Performance Test

    ADF Performance Test Function The equipment counts the documents fed by the automatic document feeder (ADF) and displays the count on the LCD for checking the ADF performance. Operating Procedure (1) Set documents. (Allowable up to the ADF capacity.) The "DOC. READY" will appear on the LCD. (2) Press the 0 and 8 keys in this order.

  • Page 144: Test Pattern 1

    Test Pattern 1 Function This function, much like the copying function, prints out test pattern 1 to allow the service personnel to check for record data missing or print quality. Operating Procedure Press the 0 and 9 keys in this order in the initial stage of the maintenance mode. The figure below shows test pattern 1.

  • Page 145: Firmware Switch Setting And Printout

    Firmware Switch Setting and Printout [ A ] Firmware switch setting Function The facsimile equipment incorporates the following firmware switch functions (WSW01 through WSW36) 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 146 Operating Procedure (1) Press the 1 and 0 keys in this order in the initial stage of the maintenance mode. The equipment displays the "WSW00" on the LCD and becomes ready to accept a firmware switch number. (2) Enter the desired number from the firmware switch numbers (01 through 36). The following appears on the LCD: WSWXX = 0 0 0 0 0 0 0 0 (3) Use the...
  • Page 147 Detailed Description for the Firmware Switches 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 148 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 149 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 150 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 equipment starts dialing upon detection of a dial tone when a line is connected.
  • Page 151 WSW04 (TRANSFER facility setting) Selector Function Setting and Specifications Earth function in transfer facility 0: Provided 1: Not provided No. 2 3 Dual tone detection frequency in 350 and 440 Hz (A) ICM recording 440 and 480 Hz (B) 480 and 620 Hz (C) Tone detection sensitivity in ICM 0: OFF 1: High...
  • Page 152 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 153 Selectors 5 and 6: Busy tone detection in automatic sending mode These selectors determine whether or not the equipment 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 equipment does not disconnect the line. Setting selectors 5 and 6 to "0"...
  • Page 154 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 155 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 facsimile equipment will insert WAIT as defined in the above table. If the Pause key is pressed repeatedly, the equipment inserts the specified WAIT multiplied by the number of depressions.
  • Page 156 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 0 : -21 dBm 0 0 1 : -24 dBm...
  • Page 157 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 158 WSW09 (Protocol definition 1) Selector Function Setting and Specifications Frame length selection 256 octets 1: 64 octets Use of non-standard commands Allowed 1: Prohibited No. 3 4 times No. of retries 3 times 2 times 1 time T5 timer 0: 300 sec. 60 sec.
  • Page 159 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 160 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: 700-800/700-800 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 161 WSW12 (Signal detection condition setting) Selector Function Setting and Specifications No. 1 300 ms (in the U.S.A. and Min. OFF time length of calling Canadian versions) signal (Ci) 1500 ms (in other versions) 500 ms 700 ms 900 ms No. 3 6 sec.
  • Page 162 WSW13 (Modem setting) Selector Function Setting and Specifications No. 1 0 km Cable equalizer 0 km 7.2 km 7.2 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 163 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 Fixed to once Fixed to 2 times Fixed to 3 times Fixed to 4 times 1 to 2 times...
  • Page 164 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 Not used. Selectors 1 through 6: Selection of redial interval and No.
  • Page 165 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 166 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. Power failure report output 1: OFF Calendar clock/prompt alternate 1: Yes display Calendar clock type U.S.A. type 1: European type Not used.
  • Page 167 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 168 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 * Not used. V.
  • Page 169 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) No. 4 Min. time length from reception of 100 ms CFR to start of transmission of 200 ms...
  • Page 170 WSW21 (TAD setting 1) Selector Function Setting and Specifications No. 1 : No detection : 1 sec. : 2 sec. Max. waiting time for voice signal : 3 sec. : 8 sec. : 31 sec. No. 6 For U.S.A. Two-way recording Except for U.S.A.
  • Page 171 WSW22 (ECM and copy resolution setting) Selector Function Setting and Specifications ECM* in sending 0: ON 1: OFF ECM* in receiving 0: ON 1: OFF Not used. Copy resolution 0: Fine 1: Superfine 0: 0% 1: 8% 0: 0% 1: 4% Acceptable TCF bit error rate (%) (Only at 4800 bps) 0: 0%...
  • Page 172 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 No. 2 Allowable training error rate 0.5% No. 4 Decoding error rate for transmission of RTN Issue of RTN at the occurrence of 0: Yes...
  • Page 173 WSW24 (TAD setting 2) Selector Function Setting and Specifications 15 sec. Maximum OGM recording time 20 sec. 30 sec. 50 sec. Time length from CML ON to 4 sec. start of pseudo ring backtone 3 sec. transmission 2 sec. 1 sec. 0 dB 8 dB Attenuator for playback of ICM/...
  • Page 174 WSW25 (TAD setting 3) Selector Function Setting and Specifications Not used. No. 5 2 sec. 4 sec. 6 sec. Pause between paging number 8 sec. and PIN 10 sec. 12 sec. 14 sec. 16 sec. Automatic shift to facsimile message receive mode in ICM 0: Yes 1: No recording mode...
  • Page 175 WSW26 (Function setting 4) Selector Function Setting and Specifications Application of DC wetting pulse 0: OFF 1: ON Overvoltage limiter at the applying 0: ON 1: OFF time of a wetting pulse Not used. No. 4 No. of CNG cycles to be detected (when the line is connected via the external telephone except in the external TAD mode)
  • Page 176 WSW27 (Function setting 5) Selector Function Setting and Specifications Not used. Ringer OFF setting Automatic playback of OGM at the start time of OGM ON mode Detection of distinctive ringing pattern Automatic erasure of voice alarm Not used. NOTE: Selector 3 is applicable to those models equipped with a built-in TAD NOTE: Selector 4 is applicable only to the U.S.A.
  • Page 177 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 178 WSW29 (Function setting 7) Selector Function Setting and Specifications Not used. Automatic dialing by caller IDs 0: Yes 1: No stored in the memory Not used. NOTE: Selector 7 is applicable to those versions supporting the caller ID service. Note that it is not applicable to the U.S.A.
  • Page 179 WSW30 (Function setting 8) Selector Function Setting and Specifications No. 1 2 3 0 0 0 -38.0 dBm 0 0 1 -39.5 dBm Detection level of dial tone or 0 1 0 -41.0 dBm busy tone for the built-in TAD 0 1 1 -42.5 dBm operation...
  • Page 180 WSW31 (Function setting 9) Selector Function Setting and Specifications Not used. Default reduction rate for failure of 0: 100% 1: 70% automatic reduction during recording Backing up received data 0: Yes 1: No Black ink empty sensor 0: Yes 1: No Minimum short-OFF duration in 0: 130 ms 1: 90 ms...
  • Page 181 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 equipment is powered up or completes a transaction.
  • Page 182 WSW33 (Function setting 11) Selector Function Setting and Specifications No. 1 -42.5 dBm -44.0 dBm Detection threshold level for voice signals inputted via the -45.5 dBm telephone line in the built-in TAD -47.0 dBm operation -48.5 dBm -50.0 dBm -51.5 dBm -53.0 dBm No.
  • Page 183 WSW34 (Function setting 12 Selector Function Setting and Specifications No. 1 0 sec. Erasing time length of ICM tone 1 sec. recorded preceding the tone 2 sec. detection starting point in the case 3 sec. of automatic line disconnection 4 sec. due to no voice signal received 5 sec.
  • Page 184 WSW35 (Function setting 13) Selector Function Setting and Specifications No. 1 2 3 4 0 0 0 : No detection Detection time length of the 0 0 1 : 1 sec. disconnection tone in ICM 0 1 0 : 2 sec. recording 1 0 0 : 4 sec.
  • Page 185 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. No. 6 7 8 0 0 0 : 0 (Not ignored) 0 0 1 : 4 (448 Hz) 0 1 0 :...
  • Page 186 [ B ] Printout of firmware switch data Function The equipment prints out the setting items and contents specified by the firmware switches. Operating Procedure (1) Press the 1 key twice in the initial stage of the maintenance mode. The "PRINTING" will appear on the LCD. (2) The equipment prints out the configuration list as shown in the figure below.

  • Page 187: Operational Check Of Lcd

    Operational Check of LCD Function This function allows you to check whether the LCD on the control panel works normally. Operating Procedure (1) Press the 1 and 2 keys in this order in the initial stage of the maintenance mode. The LCD shows (2) Press the Start key.
  • Page 188 MFC7150C MFC7160C/MFC-740 Key & Button Entry Order V - 52...

  • Page 189: Sensor Operational Check

    Sensor Operational Check Function This function allows you to check that the following 13 sensors operate correctly. Document front sensor Paper ejection sensor Document rear sensor Head property EEPROM Bin cover sensor Black ink cartridge detector Cover sensor Yellow ink cartridge sensor Registration sensor Cyan ink cartridge sensor Hook switch...

  • Page 190: Cis Scanner Area Setting

    CIS Scanner Area Setting Function The equipment sets the CIS scanner area and stores it into the EEPROM. Operating Procedure (1) Press the 5 key twice in the initial stage of the maintenance mode. The "SCANNER AREA SET," "BLACK LEVEL INIT," and "WHITE LEVEL INIT" will appear on the LCD in this order.

  • Page 191: Setting The Sensing Reference Levels Of Black Ink Empty Sensor

    3.10 Setting the Sensing Reference Levels of Black Ink Empty Sensor Function This function allows you to set the sensing reference levels of the black ink empty sensor which apply when the controller judges whether there is ink in the black ink cartridge. The setting procedure requires two types of reference cartridges--an empty cartridge and foam-empty cartridge.
  • Page 192 (9) Close the top cover. The equipment shows the "-BKEMP CHECK-" and starts setting the sensing level for the empty cartridge. If the equipment completes setting normally, the "SET F.EMP CART!!" appears. If it fails, the "BKEMP EMPTY:NG!" appears, so press the Stop key and go back to step (1). (10) Open the top cover.

  • Page 193: Alignment Of Vertical Print Lines

    3.11 Alignment of Vertical Print Lines Function This function allows you to align vertical lines printed in the forward and backward direction of the carriage. Operating Procedure (1) Press the 6 and 5 keys in this order in the initial stage of the maintenance mode. The equipment prints out a set of vertical alignment check patterns which consist of No.
  • Page 194 Aligned Vertical Alignment Check Pattern—Alignment ON V - 58...

  • Page 195: Initial Adjustment Of Pwm Value (Aging Of The Carriage

    3.12 Initial Adjustment of PWM Value (Aging of the Carriage) Function This function obtains the initial value of the PWM by aging the carriage and writes it onto the EEPROM, as well as checking the head drive voltage level. This aging procedure should be performed if you replace the print head, carriage ASSY, carriage motor, or encoder strip or if you loosen the timing belt.

  • Page 196: Equipment Error Code Indication

    3.14 Equipment Error Code Indication Function This function displays an error code of the last error on the LCD. Operating Procedure (1) Press the 8 and 2 keys in this order in the initial stage of the maintenance mode. The LCD shows the "MACHINE ERR X X." NOTE: The "MACHINE ERR X X X X"...
  • Page 197 CHAPTER VI. ERROR INDICATION AND TROUBLESHOOTING...
  • Page 198 CONTENTS ERROR INDICATION ................... VI-1 1.1 Equipment Errors................... VI-1 [ 1 ] Error messages on the LCD ............VI-1 [ 2 ] Error codes shown in the "MACHINE ERR X X" message ............. VI-4 1.2 Communications Errors.................. VI-8 TROUBLESHOOTING..................VI-15 2.1 Introduction....................

  • Page 199: Error Indication

    1. ERROR INDICATION To help the user or the service personnel promptly locate the cause of a problem (if any), the facsimile equipment incorporates the self-diagnostic functions which display error messages for equipment errors and communications errors. For the communications errors, the equipment also prints out the transmission verification report and the communications list.
  • Page 200 Messages on the LCD Probable Cause Document loading error DOCUMENT JAM (1) The document rear sensor detects no leading edge of a document within 10 seconds from the start of document loading operation. (The document rear sensor stays OFF even after the document has been fed when the document front sensor was ON.) (2) The loaded document is too short.
  • Page 201 Messages on the LCD Probable Cause PLS OPEN COVER To display the relating detailed error code, use maintenance- mode function code 82. (Refer to Chapter V, Section 3.14.) If this message appears, open and close the top cover. The message may disappear if opening/closing the top cover removes the error.

  • Page 202: 2 ] Error Codes Shown In The "Machine Err X X" Message

    [ 2 ] Error codes shown in the "MACHINE ERR X X " message If the LCD shows the "PLS OPEN COVER" message, you can display the detailed error code following the MACHINE ERR, by using the maintenance-mode function code 82 described in Chapter V, Section 3.14.
  • Page 203 Error Code Error factor Check: (Hex) Head thermister broken. • Print head unit • Carriage ASSY • Main PCB Head thermister short-circuited. The number of performed purge sequences has reached • Ink absorber the limit. • Main PCB Abnormal carriage travel speed detected when the power •...
  • Page 204 Error Code Error factor Check: (Hex) Recording paper feeding error. • Bin • Registration sensor actuator • Paper width sensor actuator • Main PCB Recording paper jam. • Registration sensor actuator (The registration sensor sticks to OFF, indicating that • Main PCB paper has jammed.) Recording paper jam.
  • Page 205 Error Code Error factor Check: (Hex) The MODEM has failed to complete the command transmission sequence. Out of recording paper. • Bin • Registration sensor actuator • Document feed roller • Main PCB Write error in EEPROM • Main PCB Data scanning error during transmission.

  • Page 206: Communications Errors

    Communications Errors If a communications error occurs, the facsimile equipment emits an audible alarm (intermittent beeping) for approximately 4 seconds, displays the corresponding error message, and prints out the transmission verification report if the equipment is in sending operation. VI - 8...
  • Page 207 n n Definition of Error Codes on the Communications List Calling Code 1 Code 2 Causes Wrong number called. No dial tone detected before start of dialing. Busy tone detected before dialing. 2nd dial tone not detected. No loop current detected.* Busy tone detected after dialing or called.
  • Page 208 Compatibility [checking the NSF and DIS] Code 1 Code 2 Causes Remote terminal only with V.29 capability in 2400 or 4800 bps transmission. Remote terminal not ready for polling. Remote terminal not equipped with password function or its password switch OFF. Remote terminal not equipped with or not ready for confidential mail box function.
  • Page 209 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 210 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 mail box ID uncoincident with the mail box Relay broadcasting ID not coincident. Entered retrieval ID uncoincident with that of the mail box ID. DCN reception Code 1 Code 2...
  • Page 211 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 212 (12) 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. (13) Equipment error Code 1 Code 2 Causes Equipment error (For X X, refer to Section 1.1 [ 2 ].) VI - 14...

  • Page 213: Troubleshooting

    2. TROUBLESHOOTING Introduction This section gives the service personnel some of the troubleshooting procedures to be followed if an error or malfunction occurs with the facsimile equipment. It is impossible to anticipate all of the possible problems which may occur in future and determine the troubleshooting procedures, so this section covers some sample problems.
  • Page 214 Ink cartridges (1) Check that all of four ink cartridges are loaded. Print head (1) Check that the print head is installed on the carriage correctly. (Check the dimple contact between the print head PCB and the carriage PCB.) (2) Repeat the head purging operation several times. VI - 16...

  • Page 215: Troubleshooting Procedures

    Troubleshooting Procedures [ 1 ] Control panel related Trouble Check: (1) LCD shows nothing. • Panel-main harness • Control panel PCB • Power supply PCB • Main PCB (2) Control panel inoperative. • Panel-main harness • Control panel PCB • FPC key •...

  • Page 216: 3 ] Communications Related

    Trouble Check: (5) Telephone does not ring. • Speaker • NCU PCB • Main PCB [ 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 •...

  • Page 217: 5 ] Print-Image Related

    [ 5 ] Print-image related If the received or sent image has any problem, first make a copy with the facsimile equipment. If the copied image is normal, the problem may be due to the remote terminal; if it is abnormal, proceed to the following checks: Jobs enclosed by parentheses (♦...
  • Page 218 Jobs enclosed by parentheses (♦ ) require the special adjustment jig set. Trouble Action to be taken (4) Light At the scanner Check the following components: - CIS unit - Main PCB At the printer Check the following components: - Ink cartridges - Print head unit - Main PCB - Power supply PCB...
  • Page 219 Jobs enclosed by parentheses (♦ ) require the special adjustment jig set. Trouble Action to be taken (7) Print edges not aligned At the printer • Check the alignment of vertical print lines by using the maintenance-mode function code 65. (Refer to Chapter V, Section 3.11).

  • Page 220: 6 ] Pc-Driven Or Video Capture-Driven Printing

    Jobs enclosed by parentheses (♦ ) require the special adjustment jig set. Trouble Action to be taken (10) White horizontal streaks • For each of the four ink-jet units, perform the head purging operation several times to remove dust or air bubbles from its nozzles.
  • Page 221 July ’98 5XA203 Printed in Japan...

  • Page 222: Appendix 1. Eeprom Customizing Codes

    MFC7150C/MFC7160C Appendix 1. EEPROM Customizing Codes...
  • Page 223 EEPROM Customizing Codes This function allows you to customize the EEPROM according to language, function settings, and firmware switch settings. n Operating Procedure Within 2 seconds (1) MFC7150C/MFC7160C: Press the Function, *, 2, 8, 6, and 4 keys in this order to make the facsimile equipment enter the maintenance mode.

  • Page 224: Appendix 2. Circuit Diagrams

    MFC7150C/MFC7160C Appendix 2. Circuit Diagrams A. Main PCB B. Network Control Unit (NCU) PCB C. Control Panel PCB D. Power Supply PCB...
  • Page 225 + 5 V S 0 V C 1 2 C 9 5 1 0 V / 1 0 0 C C 1 0 4 + 5 B S 0 V # 1 3 + 5 V T M P 9 5 C 0 6 1 C 1 0 8 A B U S V C C...
  • Page 226 R 2 7 1 + 5 V 1 2 0 1 1 D R S T D 1 5 S O V 3 . 3 V D T A 1 1 4 E K + 5 V C L K O U T D 1 4 1 1 B I N T 7...
  • Page 227 + 2 4 V P 1 0 C I S R 1 4 B 9 B - P H 1 2 0 V L E D 1 / 2 W B - G N D A 3 . 3 V G - G N D V 5 V R - G N D...
  • Page 228 M 3 . 3 V + 5 V + 5 V M 5 V + 3 . 3 V C 2 2 5 R 8 1 7 5 K C 6 5 C C 1 0 4 C 6 9 C C 1 0 4 S O V S 0 V...
  • Page 229 + 5 V + 5 V R 2 3 8 R 2 3 7 2 4 0 + 3 . 3 V 1 0 0 K + 5 V R 2 4 1 R 2 4 0 K O U T A N 2 4 0 C 2 0 9 2 3 B...
  • Page 230 R A 1 6 R A 1 3 R A 1 8 R A 1 4 4 . 7 K x 4 1 . 0 K x 4 4 . 7 K x 4 3 . 3 K x 4 + 5 V + 5 V R 1 4 1...
  • Page 231 + 2 4 V N C U 1 Q 2 6 + 5 V D T C 1 4 3 E K R 2 5 2 1 . 5 k C M L H 2 2 D 2 4 R E T R S T T C M L L 5 3 B...
  • Page 232 + 2 4 V 1 / 4 W 1 / 4 W 6 8 0 8 2 0 Q 4 1 D T C 1 2 3 J K C R 0 2 4 B 1 S S 1 2 0 2 4 R E T P 2 0 M T D 2 0 0 3 F...
  • Page 233 + 5 B S 0 V # 1 3 + 5 V T M P 9 5 C 0 6 1 C 1 0 8 C C 1 0 4 R E F O U T C 1 0 9 2 1 A R E F O U T D 1 5...
  • Page 234 R 2 7 1 + 5 V 1 2 0 1 1 D R S T D 1 5 S O V 3 . 3 V D T A 1 1 4 E K + 5 V C L K O U T D 1 4 1 1 B I N T 7...
  • Page 235 + 2 4 V P 1 0 C I S R 1 4 B 9 B - P H 1 2 0 V L E D 1 / 2 W B - G N D A 3 . 3 V G - G N D V 5 V R - G N D...
  • Page 236 M 5 V M 5 V A R E F M I C + 3 2 D T L S L # 2 5 7 1 B S 0 V R F X 1 4 4 V 2 4 M I C - 3 2 D # 2 4 C 2 6 0...
  • Page 237 + 5 V + 3 . 3 V + 5 V R 2 4 0 K O U T A N 5 6 K T R A Y 1 S 0 V + 2 4 V C 2 0 5 C C 1 0 2 P H 2 C 2 0 8...
  • Page 238 R A 1 6 R A 1 3 R A 1 8 R A 1 4 4 . 7 K x 4 1 . 0 K x 4 4 . 7 K x 4 3 . 3 K x 4 + 5 V + 5 V R 1 4 1...
  • Page 239 + 2 4 V N C U 1 Q 2 6 + 5 V D T C 1 4 3 E K R 2 5 2 1 . 5 k C M L H 2 2 D 2 4 R E T R S T T C M L L 5 3 B...
  • Page 240 + 2 4 V 1 / 4 W 1 / 4 W 6 8 0 8 2 0 Q 4 1 D T C 1 2 3 J K C R 0 2 4 B 1 S S 1 2 0 2 4 R E T P 2 0 M T D 2 0 0 3 F...
  • Page 241 3 . C O M P O N E N T S P A R E N T H E S I S N O T M O U N T E D . + 2 4 V C M L C R 1 M Z F - 2 4 H G O U A Z - S S - 1 2 4 D...
  • Page 242 + 5 V S G N D R 1 8 R 1 9 R 1 7 1 0 0 K C 1 3 + 5 V C C 1 0 2 X 7 V S S C C 1 0 4 V D D S G N D + 5 D...
  • Page 243 Y L 2 / B Y 2 P A N E L K E Y M A T R I X R E F E R E N C E T A B L E K E Y N O . K E Y C O D E K E Y...

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