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Brother FAX255 Service Manual

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Table of Contents
FACSIMILE EQUIPMENT
SERVICE MANUAL
MODEL: FAX255/FAX275/
FAX355MC/FAX375MC/
FAX-515/FAX-525DT/
FAX-525MC/HOMEFAX3

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  Summary of Contents for Brother FAX255

  • Page 1 FACSIMILE EQUIPMENT SERVICE MANUAL MODEL: FAX255/FAX275/ FAX355MC/FAX375MC/ FAX-515/FAX-525DT/ FAX-525MC/HOMEFAX3...
  • Page 2 © Copyright Brother 1999 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 opera- tion, and maintenance of the Brother facsimile equipment. It includes information required for field troubleshooting and repair—disassembly, reassembly, and adjustment—so that service personnel will be able to understand equipment function, to rapidly repair the equipment and order any necessary spare parts.
  • Page 4 CHAPTER I. GENERAL DESCRIPTION...
  • Page 5 CHAPTER I. GENERAL DESCRIPTION CONTENTS EQUIPMENT OUTLINE ................. 1.1 External Appearance and Weight ............1.2 Components .................... I-1 SPECIFICATIONS ..................I-2...
  • Page 6: Equipment Outline

    1. EQUIPMENT OUTLINE External Appearance and Weight The figure below shows the equipment appearance and approximate dimensions. 137.0 (H) 240.0 (D) 299 (W) (Unit: mm) Weight: Machine proper Approx. 2.9 kg (excluding a paper roll) In package Approx. 4.0 kg Components The equipment consists of the following major components: Control panel ASSY...
  • Page 7: Specifications

    2. SPECIFICATIONS Model FAX255 FAX275 Color Gray (1293) White (1485) Modem Speed 9600 bps 9600 bps Coding Method Transmission Speed 15 sec. 15 sec. CCITT Group Input/Output Width Max. 8.5" x 8.5" Max. 8.5" x 8.5" Handset Automatic Cutter ADF Capacity (pages) Anti-curl System Roll Paper Size (Standard thermal/Therma PLUS) 164'/98' (1"-core)
  • Page 8 Model FAX355MC/FAX375MC FAX-525DT/FAX-525MC Color White (1485) Gray (1293)/White (1485)* Modem Speed 14400 bps 14400 bps Coding Method Transmission Speed 9 sec. 10 sec. CCITT Group Input/Output Width 8.5"/8.5" Max. 216/216 mm Hold Key (Mute Key) Automatic Cutter ADF Capacity 10 pages 10 pages Anti-curl System Roll Paper Size (Standard thermal/Therma PLUS)
  • Page 9 Model FAX-515 HOMEFAX3 Color Gray (1293), White (1485)* White (1485) Modem Speed 9600 bps 9600 bps Coding Method Transmission Speed 15 sec. 15 sec. CCITT Group Input/Output Width Max. 8.5" x 8.5" Max. 8.5" x 8.5" Handset Automatic Cutter ADF Capacity (pages) Anti-curl System Roll Paper Size (Standard thermal/Therma PLUS) 50 m/30 m (1"-core)
  • Page 10 CHAPTER II. INSTALLATION...
  • Page 11 CHAPTER III. THEORY OF OPERATION...
  • Page 12: Table Of Contents

    CHAPTER III. THEORY OF OPERATION CONTENTS OVERVIEW ..................... III-1 MECHANISMS ....................III-2 2.1 Transmitting Mechanism (Feeding and scanning documents) ....III-2 2.1.1 Automatic document feeder (ADF)..........III-2 2.1.2 Scanner ................... III-3 2.2 Receiving Mechanism (Feeding recording paper and printing data) ..III-4 2.2.1 Anti-curl system (ACS) ..............
  • Page 13: Overview

    1. OVERVIEW Control panel Automatic cutter Scanner Recorder (CIS unit) Controller Drive unit (Motor and solenoid) Line Power supply Telephone Speaker III – 1...
  • Page 14: Mechanisms

    2. MECHANISMS The equipment is classified into the following mechanisms: Transmitting Mechanism Feeding and scanning documents Receiving Mechanism Feeding recording paper and printing data Power Transmission Mechanism Switching the power transmission route Sensors and Actuators Transmitting Mechanism (Feeding and scanning documents) The transmitting mechanism consists of the document stacker, automatic document feeder (ADF), document feeding related rollers, scanner, and document sensors.
  • Page 15: Scanner

    2.1.2 Scanner The scanner uses a contact image sensor (CIS) unit which consists of an LED array illumi- nating documents, a self-focus lens array collecting the reflected light, a CIS PCB carrying out photoelectric conversion to output picture element data, and a cover glass on which a document advances.
  • Page 16: Receiving Mechanism (Feeding Recording Paper And Printing Data)

    Receiving Mechanism (Feeding recording paper and printing data) The receiving mechanism consists of the recording paper roll holder, anti-curl system (ACS) plate, platen, thermal recording head, automatic cutter, and sensors. (For details about the sensors, refer to Section 2.4.) The recording paper is routed on the ACS plate to the recording head which prints onto the heat-sensitive recording paper pressed by the platen according to received image signals.
  • Page 17: Power Transmission Mechanism

    Power Transmission Mechanism The equipment has a single drive motor whose power transmission route can be switched by the planetary gear train and the solenoid. This switching allows the equipment to function in four operation modes (recording, scanning, copying, and cutter driving modes). 2.3.1 Structure of the gear train The gear train consists of two groups of gears: one group on the drive unit and the other on...
  • Page 18 Shown below is a gear train constructed by combining the drive unit and scanner frame ASSY. The motor rotation is transmitted via the planet gear 20B (C1) to the gear 16 (D) and via the gear 16/24 (K) to the separation roller gear (L). K (Gear 16/24) L (Separation roller gear) O (White pressure roller gear)
  • Page 19: Description Of Planetary Gear System

    2.3.2 Description of planetary gear system The planetary gear train consists of the sun gear 18/82, two planet gears 20, arm A, and arm B, as shown below. Stopper of arm A Motor gear Sun gear 18/82 Planet gear 20A Planet gear 20B Arm A Arm B...
  • Page 20: Power Transmission For Four Operation Modes

    2.3.3 Power transmission for four operation modes Depending upon the solenoid ON/OFF state and the motor rotation direction, the planetary gear train switches the power transmission route for the four operation modes. Solenoid ON/OFF state Motor rotation direction Solenoid: OFF Spring Clutch arm Forward...
  • Page 21: 1 ] Recording Mode (Solenoid: Off, Motor Rotation: Forward)

    [ 1 ] Recording mode (Solenoid: OFF, Motor rotation: Forward) In the recording mode, the control electronics deactivates the solenoid. When the motor ro- tates in the forward direction, the clutch arm turns clockwise with the spring and its cutout X becomes engaged with the stopper of arm A.
  • Page 22: 2 ] Scanning Mode (Solenoid: Off, Motor Rotation: Reverse)

    [ 2 ] Scanning mode (Solenoid: OFF, Motor rotation: Reverse) Just as in the recording mode, the control electronics deactivates the solenoid in the scan- ning mode to lock arm A. The motor rotates in the reverse direction and the sun gear 18/82 (B) rotates clockwise so that the planet gear 20B (C1) transmits the rotation to the separation roller gear (L) and white pressure roller gear (O) via the several gears.
  • Page 23: 3 ] Copying Mode (Solenoid: On Off, Motor Rotation: Forward)

    [ 3 ] Copying mode (Solenoid: ON OFF, Motor rotation: Forward) The control electronics at first activates the solenoid to release the stopper of arm A from the cutout X of the clutch arm while rotating the motor in the forward direction. Accordingly, the sun gear 18/82 (B) rotates counterclockwise so that both the planet gears 20B (C1) and 20A (C2) transmit the rotation;...
  • Page 24: 4 ] Cutter Driving Mode (Solenoid: On, Motor Rotation: Reverse)

    [ 4 ] Cutter driving mode (Solenoid: ON, Motor rotation: Reverse) The control electronics activates the solenoid to release the stopper of arm A from the clutch arm. When the motor rotates in the reverse direction, the sun gear 18/82 (B) rotates clock- wise so that the planet gear 20A (C2) transmits the rotation to the cutter gear (Q) via gear P.
  • Page 25 The cutter gear (Q) is a two-stepped gear whose inside gear is a one-tooth sector gear. While the cutter gear (Q) rotates by one turn for one stroke of the upper blade of the cutter, the one-tooth sector gear slightly turns the platen gear (H) clockwise via the reverse gear (I) to feed the recording paper back into the equipment.
  • Page 26: Power Transmission Route

    2.3.4 Power transmission route Rotation of the motor gear is transmitted as shown below. Motor gear Sun gear 18/82 C1: Planet gear 20B C2: Planet gear 20A Gear 16 Gear 14/20 Gear 18 Gear 18L Platen gear Reverse gear Gear 20 Gear 16/24 Separation roller gear Gear 23...
  • Page 27: Sensors And Actuators

    Sensors and Actuators This equipment has two photosensors and four mechanical switches as described below. Sensor name Type Located on Document front sensor Photosensor (PH1) Main PCB Document rear sensor Photosensor (PH2) Main PCB Paper empty (PE) sensor Mechanical switch (SW1) Main PCB Cover sensor Mechanical switch (SW2)
  • Page 28 (Rear) Cover sensor actuator (Panel lock arm) Cover sensor Hook switch sensor actuator PE sensor actuator Hook switch sensor PE sensor Document front sensor actuator Cutter HP sensor actuator (Cutter flange) Document front sensor Cutter HP sensor Document rear sensor actuator Document rear sensor Location of Sensors and Actuators III –...
  • Page 29: Control Electronics

    3. CONTROL ELECTRONICS Configuration The hardware configuration of the facsimile equipment is shown below. Line External telephone * Provided on the FAX355MC/ FAX375MC/FAX-525DT/FAX- 525MC 2-pin 2-pin Handset 4-pin NCU PCB (Note) Speaker 12-pin: U.S.A. versions 18-pin: European versions (Note) Control 2-pin panel PCB 5-pin...
  • Page 30 Main PCB The main PCB, which is the nucleus controlling the entire operation of the equipment, con- sists of a FAX engine (ASIC), memories, MODEM, motor drive circuitry, sensor detection cir- cuitry, and analog circuits for scanning, recording, and power transmission shifting. Control panel PROM Recording head...
  • Page 31 FAX255/FAX275/FAX-515/HOMEFAX3 Amplifier SRAM Analog front end processor Analog switch Transistor array FAX control EEPROM gate array Speaker amplifier FAX355MC/FAX375MC/FAX-525DT/FAX-525MC Analog switch Amplifiers DRAM Analog front end processors Speaker amplifier Transistor array FAX control Analog switch gate array EEPROM III – 19...
  • Page 32: Ncu Pcb

    NCU PCB The NCU PCB switches the communications line to telephone or built-in MODEM, under the control of the main PCB. U.S.A. versions Surge Dial pulse Line relay Line LINE MAIN PCB absorber generator (CML relay) transformer High-impedance MAIN PCB transformer EXTERNAL Loop current...
  • Page 33 European versions Surge Dial pulse DC loop Line Line relay LINE MAIN PCB absorber generator circuit transformer High-impedance MAIN PCB transformer EXTERNAL Loop current Calling signal MAIN PCB detector detector TELEPHONE Telephone HANDSET MAIN PCB circuit Transformers Diode bridges Surge absorbers Modular jacks Relays Photocoupler...
  • Page 34: Control Panel Pcb

    Control Panel PCB The control panel PCB and the main PCB communicate with each other by serially transmit- ting commands and data. The control panel unit consists of a gate array and LCD, which are controlled by the gate array according to commands issued from the FAX engine on the main PCB. The calendar clock is backed up by the backup circuit on the main PCB.
  • Page 35: Power Supply Pcb

    Power Supply PCB The power supply uses the switching regulation system to generate DC power (+26.6V and +8V) from a commercial AC power supply. The +26.6V source is stabilized and fed to the motor and solenoid for feeding documents and recording paper or activating the automatic cutter, and also fed to the CIS LED array. It is also fed to the main PCB where the H26.6V source is generated.
  • Page 36 CHAPTER IV. DISASSEMBLY/REASSEMBLY AND LUBRICATION...
  • Page 37 CHAPTER IV. DISASSEMBLY/REASSEMBLY AND LUBRICATION CONTENTS DISASSEMBLY/REASSEMBLY ..............IV-1 Safety Precautions ..................IV-1 Preparation ....................IV-3 How to Access the Object Component ............IV-3 Disassembly Order Flow ................IV-4 ACS Plate ....................IV-5 ROM Cover and Battery ASSY ............. IV-6 Inner Cover ....................
  • Page 38: Disassembly/Reassembly

    1. DISASSEMBLY/REASSEMBLY Safety Precautions To prevent the creation of secondary problems by mishandling, observe the following pre- cautions during maintenance work. Always turn off the power before replacing parts or units. When having access to the power supply, be sure to unplug the power cord from the power outlet. Be careful not to lose screws, washers, or other parts removed for parts replacement.
  • Page 39 Tightening Torque List Location Screw type Q'ty Tightening torque kgf•cm (N•cm) Recording paper cover Taptite, cup B M3x8 5 2 (49 20) Panel rear cover Taptite, cup B M3x8 5 2 (49 20) Control panel PCB Taptite, cup B M3x8 5 2 (49 20) Scanner frame ASSY Taptite, cup B M3x8...
  • Page 40: 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), and - the modular jack of an external telephone set if mounted. (Not shown below.) (2) Remove - the document support.
  • Page 41: Disassembly Order Flow

    Disassembly Order Flow ACS plate ROM cover Inner cover Bottom plate and battery ASSY* Control panel ASSY * Provided on the FAX355MC/ FAX375MC/FAX-525DT/ Panel lock arm FAX-525MC. Recording paper cover Panel rear cover - ADF parts Control panel - Control panel PCB - FPC key - LCD - Microphone*...
  • Page 42: Acs Plate

    ACS Plate Open the control panel ASSY. Push down the locking pawl of the main frame with the tip of a flat screwdriver and move the ACS plate to the left. Control panel ASSY ACS plate "X" "Y" Main frame Flat screwdriver Locking pawl Reassembling Notes...
  • Page 43: Rom Cover And Battery Assy

    ROM Cover and Battery ASSY* (*FAX355MC/FAX375MC/FAX-525DT/FAX-525MC) Insert the tip of the spring hook at the center or left half of the locking arm as shown below, then lift up the hook to release and move the ROM cover to the right. For the FAX355MC/FAX375MC/FAX-525DT/FAX-525MC: Slightly lift up the ROM cover and disconnect the battery harness from the main PCB, then take out the ROM cover together with the battery ASSY.
  • Page 44 For the FAX355MC/FAX375MC/FAX-525DT/FAX-525MC: To take out the main PCB or the power supply PCB in Section 1.18, unhook the battery harness core and cutter HP sensor harness core from bosses "C" and "D," respectively, at this stage. Boss "C" Cutter HP sensor (Unhook the power supply harness Power supply harness...
  • Page 45: Inner Cover

    Inner Cover (1) Swing the recording head release lever (blue lever) up to the head release position. (2) While lifting up the inner cover slightly, release the four latches with the tip of a flat screwdriver in the order (1 to 4) shown below. Pawls "P"...
  • Page 46: Control Panel Assy

    Control Panel ASSY (1) Disconnect the main-panel harness and the main-mic harness* from the main PCB, and then take out those harnesses from the groove of the main frame. (2) Slightly bring the control panel ASSY back up towards you so that you can release the panel lock arm from the boss of the main frame.
  • Page 47 Push the control panel ASSY back and remove it. Control panel ASSY Panel lock arm Main-mic harness* Main-panel harness * The main-mic harness is provided on the FAX355MC/FAX375MC/FAX-525DT/FAX- 525MC. Reassembling Notes • Make sure that the main-panel harness and main-mic harness* are routed through the groove provided on the recording paper cover and are kept in place with the panel lock arm, as illustrated on page IV-13.
  • Page 48: Recording Paper Cover, Panel Rear Cover, Control Panel And Microphone

    Recording Paper Cover, Panel Rear Cover, Control Panel and Microphone* (*FAX355MC/FAX375MC/FAX-525DT/FAX-525MC) Place the control panel ASSY upside down. Turn the panel lock arm until the cutout provided in it becomes aligned with the boss of the arm support, then pull it out to the left. Remove the two screws "a"...
  • Page 49 To separate the FPC key from the control panel PCB, unlock the FPC key connector and disconnect the FPC key. For the FAX355MC/FAX375MC/FAX-525DT/FAX-525MC: Take out the microphone* and its harness* from the control panel. Bosses Main-mic harness* Control panel Guides * Provided on the FAX355MC/FAX375MC/ FAX-525DT/FAX-525MC.
  • Page 50 • When setting the recording paper cover on the control panel, first insert the right and left front corners under sections "X" of the control panel and put the cover into place. Make sure that the main-panel harness and main-mic harness* are routed as shown below. Control panel "X"...
  • Page 51: Scanner Frame Assy

    Scanner Frame ASSY Be sure to swing the recording head release lever (blue lever) down to the front posi- tion. Remove the two screws. Slightly lift up the rear edge of the scanner frame ASSY and disconnect the following five harnesses from the main PCB: •...
  • Page 52 FAX355MC/FAX375MC/FAX-525DT/FAX-525MC Wrong handling Upper paper chute (Hold here.) Scanner frame ASSY Lower paper chute (Do not hold here.) "A" Main frame "A" "B" (NCU connector) "B" ACS grounding spring Cutter HP sensor harness (2-pin) Recording head harness (12-pin) CIS harness (7-pin) Main PCB Solenoid harness (2-pin) Motor harness (6-pin)
  • Page 53 Lift up the ACS grounding spring. Reassembling Notes • Before putting the scanner frame ASSY back onto the main frame, be sure to set the ACS grounding spring as illustrated on the previous page. • Make sure that tabs "A" of the scanner frame ASSY are fitted in cutouts "B" provided in the main frame.
  • Page 54: White Pressure Roller And Cis Unit

    White Pressure Roller and CIS Unit Turn the bushing of the white pressure roller clockwise approx. 90˚ and pull it out to the right. Lift up the left end of the white pressure roller and push it to the right. Bushing White pressure roller (Front)
  • Page 55: Drive Unit (Main Motor And Cutter Hp Sensor

    Drive Unit (Main Motor and Cutter HP Sensor) Turn the scanner frame ASSY upside down. Remove the adhesive tape to release the CIS harness, motor harness, solenoid har- ness, and cutter HP sensor harness. (Left) Scanner frame ASSY (placed upside down) Adhesive tape Lower paper chute...
  • Page 56 After releasing the boss of the cutter flange from the upper blade, turn the upper blade clockwise as shown below and take the drive unit off from the scanner frame ASSY. Drive unit Boss of cutter flange Upper blade To take out the motor, remove the screw, lightly press the locking arm and turn the mo- tor counterclockwise.
  • Page 57 To take out the cutter HP sensor, remove the screw. Drive unit Cutter HP sensor Reassembling Notes • When installing the motor bracket, fit the two holes "a" over the positioning bosses pro- vided on the drive unit. • Make sure that the locking arm clamps the motor. •...
  • Page 58: Separation Roller Assy

    Separation Roller ASSY Push down the latch with the tip of a flat screwdriver and move the separation roller ASSY to the left. Then remove the roller to the right and pull out the roller shaft to the left. Separation roller ASSY Scanner frame ASSY Latch (Front)
  • Page 59: Document Front And Rear Sensor Actuators

    1.10 Document Front and Rear Sensor Actuators Turn the document front sensor actuator as shown below and move it to the left (viewed from the rear). Scanner frame ASSY Document front sensor actuator (Rear) Turn the document rear sensor actuator as shown below and move it to the right (viewed from the front).
  • Page 60: Recording Head Release Lever

    1.11 Recording Head Release Lever Place the scanner frame ASSY upside down. Swing the recording head release lever as shown below. Release the latch and remove the recording head release lever. (Front) Latch Recording head release lever Latch (Blue lever) Scanner frame ASSY (placed upside down) IV –...
  • Page 61: Recorder & Cutter Assy

    1.12 Recorder & Cutter ASSY Place the scanner frame ASSY upside down. Remove the screw. Press the warped sections of the scanner frame ASSY outwards at both sides with the tip of a flat screwdriver and take out the recorder & cutter ASSY. Warped section Flat screwdriver...
  • Page 62: Platen And Cutter Chute

    1.13 Platen and Cutter Chute Release the latch of the bushing (R) and pull out the bushing to the right. Pull out the platen gear to the left together with the platen and then lift up. Latch Platen Bushing (R) Recorder &...
  • Page 63: Recording Head And Cutter Unit

    1.14 Recording Head and Cutter Unit Push down the front edge of the recording head and move it back to the rear to release the tabs from the cutter unit. NOTE: Take care not to lose the three springs placed under the recording head. NOTE: Never disassemble the cutter unit.
  • Page 64: Hook Switch Sensor Actuator

    1.15 Hook Switch Sensor Actuator (1) Press the lower section of the hook switch sensor actuator to the left to release the latch from the main frame, then swing it upwards. (2) Remove the spring. Hook switch sensor actuator Hook switch sensor actuator Latch Latch (Rear)
  • Page 65: Bottom Plate

    1.17 Bottom Plate Place the main frame upside down. Remove the four screws. Slightly lift up the bottom plate and disconnect the grounding terminal. Remove the insulation sheet from the bottom plate. Positioning hole Insulation sheet Checking hole "a" Adhesive tape Bottom plate Grounding terminal Resin PCB support "b"...
  • Page 66: Main Pcb, Ncu Pcb And Power Supply Pcb

    1.18 Main PCB, NCU PCB and Power Supply PCB If you have already removed the scanner frame ASSY and speaker, slightly lift up the main PCB together with the NCU PCB and then disconnect the power supply harness from the main PCB.
  • Page 67 FAX355MC/FAX375MC/FAX-525DT/FAX-525MC Slightly lift up the rear edge of the NCU PCB and disconnect it from the main PCB. Power supply PCB NCU PCB Power supply harness Main frame (placed upside down) Main PCB (Front) NCU connector (Rear edge) Battery harness (2-pin) Cutter HP sensor harness (2-pin) Recording head harness...
  • Page 68 Attempt to lift up the main PCB slightly. If it is impossible to lift up the PCB to an extent which allows you to disconnect the harnesses, you may not have unhooked the power supply harness core or cutter HP sensor harness core from bosses "C" or "D," respec- tively.
  • Page 69 Reassembling Notes • Make sure that the power supply PCB is completely fitted in the resin PCB supports of the main frame. If it is loosely mounted so that it comes into contact with the bottom plate, a short circuit may occur. •...
  • Page 70: Paper Empty Sensor Actuator

    1.19 Paper Empty Sensor Actuator Press the actuator support outwards and lift up the paper empty sensor actuator. The spring also comes off. Paper empty sensor actuator Actuator support Main frame (placed upside down) (Front) IV – 33...
  • Page 71: Lubrication

    2. LUBRICATION Apply Molykote EM-30L to the lubrication points as illustrated below. For points A, apply a rice-sized pinch of grease (6 mm For points B, apply a bean-sized pinch of grease (12 mm [ 1 ] Scanner frame ASSY Separation roller ASSY Scanner frame ASSY IV –...
  • Page 72 [ 2 ] Drive unit NEVER apply grease here. Drive unit Clutch arm Arm B Arm A [ 3 ] Recording head Recording head IV – 35...
  • Page 73 [ 4 ] Cutter unit Cutter unit IV – 36...
  • Page 74 CHAPTER V. MAINTENANCE MODE...
  • Page 75 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-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 ............
  • Page 76: Entry Into The Maintenance Mode

    1. ENTRY INTO THE MAINTENANCE MODE FAX255/FAX275/FAX355MC/FAX375MC: To make the facsimile equipment enter the maintenance mode, press the Function, *, 2, 8, 6, and 4 keys in this order. Within 2 seconds FAX-515/FAX-525DT/FAX-525MC/HOMEFAX3: To make the facsimile equipment enter the maintenance mode, press the Menu, *, 2, 8, 6, and 4 keys in this order.
  • Page 77: 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 78 - - - - - - - - - - - - - - - - - - - - - - - - - - IMPORTANT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Basically, the maintenance-mode functions listed on the previous page should be accessed by service personnel only.
  • Page 79: 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 all of the EEPROM areas, but entering 91 does not initialize some areas, as listed below. Function code Data item Maintenance-mode functions...
  • Page 80: 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 81 Scanning Compensation Data List V - 6...
  • Page 82: 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) in the initial stage of the maintenance mode.
  • Page 83: 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 84: 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 WSW37) 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 85 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 37). The following appears on the LCD: WSWXX = 0 0 0 0 0 0 0 0 (3) Use the...
  • Page 86 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 87 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 88 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 89 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 90 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 91 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 92 Selector 4: Max. pause time allowable for remote ID code detection This selector sets the maximum pause time allowable for detecting the second digit of a remote ID code after detection of the first digit in remote reception. If selector 4 is set to "0" (2 seconds), for instance, only a remote ID code whose second digit is detected within 2 seconds after detection of the first digit will become effective so as to activate the remote function.
  • Page 93 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 94 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 95 WSW07 (Dial tone setting 1) Selector Function Setting and Specifications No. 1 2 Narrows by 10 Hz Frequency band range 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 96 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 97 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 98 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 99 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 100 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 101 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 102 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 103 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 104 WSW16 (Function setting 1) Selector Function Setting and Specifications Automatic cutter 0: ON 1: OFF 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 1: Automatic cutter...
  • Page 105 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 Error indication in activity report 1: Yes...
  • Page 106 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. ACS* check sheet output function 0: Operative 1: Inoperative on/off key ACS* check sheet output function 0: ON...
  • Page 107 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 108 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 109 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 110 WSW22 (ECM) Selector Function Setting and Specifications ECM* in sending 0: ON 1: OFF ECM* in receiving 0: ON 1: OFF Not used. 0: 0% 1: 8% 0: 0% 1: 4% Acceptable TCF bit error rate (%) (Only at 4800 bps) 0: 0% 1: 2% 0: 0%...
  • Page 111 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 Not used.
  • Page 112 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 113 WSW25 (TAD setting 3) Selector Function Setting and Specifications Not used. No. 5 2 sec. 4 sec. 6 sec. Pause between paging number 8 sec. and PIN 10 sec. 12 sec. 14 sec. 16 sec. Not used. NOTE: Selectors 5 through 7 are applicable to the U.S.A. and Canadian versions of the FAX355MC/ FAX375MC.
  • Page 114 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 115 WSW27 (Function setting 5) Selector Function Setting and Specifications Definition of programmable key TEL key TEL/POLLING key Ringer OFF setting Automatic playback of OGM at the start time of OGM ON mode Detection of distinctive ringing pattern Not used. Motor overheating error indication NOTE: Selector 1 is not applicable to the U.S.A.
  • Page 116 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 117 WSW29 (Function setting 7) Selector Function Setting and Specifications No. 1 2 3 0 0 0 -47.0 dBm 0 0 1 -48.5 dBm Compression threshold level for 0 1 0 -50.0 dBm voice signals inputted via the 0 1 1 -51.5 dBm telephone line in the built-in TAD 1 0 0...
  • Page 118 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 119 WSW31 (Function setting 9) Selector Function Setting and Specifications Not used. Minimum short-OFF duration in 0: 130 ms 1: 90 ms distinctive ringing Not used. NOTE: Selector 5 is applicable in those areas where the distinctive ringing is supported. Selector 5 Minimum short-OFF duration in distinctive ringing The ringer pattern consists of short and long rings, e.g., short-short-long rings.
  • Page 120 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 NOTE: Selectors 5 through 8 are applicable to those models equipped with a built-in TAD. Selectors 5 and 6 Default resolution These selectors set the default resolution which applies when the equipment is powered up or...
  • Page 121 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 122 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 123 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 124 WSW37 (Function setting 15) Selector Function Setting and Specifications Not used. V - 49...
  • Page 125 [ 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 126: 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 127 FAX255/FAX275/FAX-515/HOMEFAX3 FAX355MC/FAX375MC/FAX-525DT/FAX-525MC Key & Button Entry Order V - 52...
  • Page 128: Sensor Operational Check

    Sensor Operational Check Function This function allows you to check that the six sensors (document front sensor, document rear sensor, cover sensor, paper empty (PE) sensor, cutter home position (HP) sensor, and hook switch sensor) operate correctly. Operating Procedure (1) Press the 3 and 2 keys in this order in the initial stage of the maintenance mode. The equipment sounds 1100 Hz and 400 Hz tones cyclically through the following volumes for testing the speaker.
  • Page 129: Fine Adjustment Of Scanning Start/End Position

    Fine Adjustment of Scanning Start/End Position Function This function allows you to adjust the scanning start/end position. Operating Procedure (1) Press the 5 and 4 keys in this order in the initial stage of the maintenance mode. The LCD shows the current scanning position correction value as shown at right.
  • Page 130: Cis Scanner Area Setting

    3.10 CIS Scanner Area Setting Function The equipment sets the CIS scanner area and stores it into the EEPROM. Operating Procedure (1) In the initial stage of the maintenance mode, set the "adjusting sheet A" on the document stacker. (2) Press the 5 key twice. The "SCANNER AREA SET"...
  • Page 131: Equipment Error Code Indication

    3.12 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 ERROR _ _". (2) To stop this operation and return the equipment to the initial stage of the maintenance mode, press the Stop key.
  • Page 132: Document Draw Adjustment

    3.14 Document Draw Adjustment After replacement of the main PCB or CIS, or if data stored in the EEPROM is damaged, you need to carry out this procedure by using the TC-027 chart. Function This function adjusts how much the document is drawn in, starting at the point when the document rear sensor is turned on until the leading edge of the document reaches the scanning start position.
  • Page 133 CHAPTER VI. ERROR INDICATION AND TROUBLESHOOTING...
  • Page 134 CHAPTER VI. ERROR INDICATION AND TROUBLESHOOTING 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 ERROR XX" message ..VI-3 1.2 Communications Errors................
  • Page 135: 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 re- port and the communications list.
  • Page 136 Messages on the LCD Probable Cause DOCUMENT JAM Document loading error (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 137: 2 ] Error Codes Shown In The "Machine Error Xx" Message

    [ 2 ] Error codes shown in the "MACHINE ERROR XX" message Error Code Error factor (Hex.) ( 87 Fails to complete the sequence of recording operation. ) ( 89 Cutter jam. ) Wrong or weak contact of the recording head connectors. ( 8B Recording head overheat.
  • Page 138: Communications Errors

    Communications Errors If a communications error occurs, the facsimile equipment (1) emits an audible alarm (intermittent beeping) for approximately 4 seconds, (2) displays the corresponding error message, and (3) prints out the transmission verification report if the equipment is in sending operation. VI –...
  • Page 139 Definition of Error Codes on the Communications List (1) 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 140 (3) 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 confi- dential mail box function.
  • Page 141 (4) Instructions received from the remote terminal [checking the NSC, DTC, NSS, and DCS] Code 1 Code 2 Causes Illegal coding system requested. Illegal recording width requested. ECM requested although not allowed. Polled while not ready. No document to send when polled. Nation code or manufacturer code not coincident.
  • Page 142 (6) 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 ID. Relay broadcasting ID not coincident. Entered retrieval ID uncoincident with that of the mail box (7) DCN reception Code 1...
  • Page 143 (9) Signal isolation Code 1 Code 2 Causes Unable to detect video signals and commands within 6 seconds after CFR is transmitted. Received PPS containing invalid page count or block count. (10) Video signal reception Code 1 Code 2 Causes Error correction sequence not terminated even at the final transmission speed for fallback.
  • Page 144 (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. Failed to detect any command from the RS-232C interface in burn-in operation. (13) Equipment error Code 1 Code 2 Causes...
  • Page 145: Troubleshooting

    2. TROUBLESHOOTING Introduction This section gives the service personnel some of the troubleshooting procedures to be fol- lowed if an error or malfunction occurs with the facsimile equipment. It is impossible to an- ticipate all of the possible problems which may occur in future and determine the trouble- shooting procedures, so this section covers some sample problems.
  • Page 146: Troubleshooting Procedures

    Troubleshooting Procedures [ 1 ] Control panel related Trouble Check: (1) LCD shows nothing. • Main-panel harness between the main PCB and the control panel PCB • Interfaces between the main PCB, NCU PCB and power supply PCB • Control panel PCB •...
  • Page 147: 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 148: 5 ] Print-Image Related

    [ 5 ] Print-image related If the received or sent image has any problem, first make a copy with the facsimile equip- ment. If the copied image is normal, the problem may be due to the remote terminal; if it is abnor- mal, proceed to the following checks: Trouble Check:...
  • Page 149 Trouble Check: (6) Faulty image registration At the scanner • CIS harness • CIS unit • Main PCB At the recorder • Recording head harness • Main PCB (7) Image distortion • Error code displayed (Refer to Section 1, "ERROR In communications INDICATION"...
  • Page 150 March '99 8X1U11 Printed in Japan...
  • Page 151 FAX255/FAX275/FAX355MC/FAX375MC FAX-515/FAX-525DT/FAX-525MC/HOMEFAX V3 Appendix 1. EEPROM Customizing Codes...
  • Page 152 EEPROM Customizing Codes This function allows you to customize the EEPROM according to language, function settings, and firmware switch settings. The customizing codes list is given on the next page. n Operating Procedure Within 2 seconds (1) FAX255/FAX275/FAX355MC/FAX375MC: Press the Function, *, 2, 8, 6, and 4 keys in this order to make the equipment enter the maintenance mode.
  • Page 153 n EEPROM Customizing Codes List Model Versions FAX255(318) FAX275(328) FAX355MC FAX375MC(735) 1001 1101 1001 1001 U.S.A. (3001) (3101) (3001) (3001) CANADA 0002 0102 0002 0002 (2002) (2102) (2002) (2002) CHINA 0020 0020 TAIWAN 0023 0023 0023 HONG KONG 0140 0040 ARGENTINA 0135 0035...
  • Page 154 Model Versions FAX-515 FAX-525DT FAX-525MC HOMEFAX V3 GERMANY 0003 0003 U.K. 0004 0004 FRANCE 0005 0005 NORWAY 0007 BELGIUM 0008 0008 NETHERLANDS 0009 0009 SWITZERLAND 0010 0010 IRELAND 0011 0011 FINLAND 0012 0012 DENMARK 0013 AUSTRIA 0014 0014 SPAIN 0015 0015 ITALY 0016...
  • Page 155 FAX255/FAX275/FAX355MC/FAX375MC FAX-515/FAX-525DT/FAX-525MC/HOMEFAX V3 Appendix 2. Circuit Diagrams A. Main PCB B. Network Control Unit (NCU) PCB C. Control Panel PCB D. Power Supply PCB...
  • Page 156 Main PCB 1/4 (FAX255/FAX275/FAX-515/ HOMEFAX3)
  • Page 157 Main PCB 2/4 (FAX255/FAX275/FAX-515/ HOMEFAX V3)
  • Page 158 Main PCB 3/4 (FAX255/FAX275/FAX-515/ HOMEFAX V3)
  • Page 159 Main PCB 4/4 (FAX255/FAX275/FAX-515/ HOMEFAX V3)
  • Page 160 Main PCB 1/5 (FAX355MC/FAX375MC/FAX-525DT/ FAX-525MC)
  • Page 161 Main PCB 2/5 (FAX355MC/FAX375MC/FAX-525DT/ FAX-525MC)
  • Page 162 Main PCB 3/5 (FAX355MC/FAX375MC/FAX-525DT/ FAX-525MC)
  • Page 163 Main PCB 4/5 (FAX355MC/FAX375MC/FAX-525DT/ FAX-525MC)
  • Page 164 Main PCB 5/5 (FAX355MC/FAX375MC/FAX-525DT/ FAX-525MC)
  • Page 165 + 2 6 V C R 1 M Z F - 2 4 H G C M L O U A Z - S S - 1 2 4 D R A 3 5 1 M x 2 N C U S L S 0 V J W X 2 R L 1...
  • Page 166 + 2 6 V C R 1 M Z F - 2 4 H G C M L O U A Z - S S - 1 2 4 D R A 3 5 1 x 2 N C U S L S 0 V S B T 0 2 6 0 X 2 S B T 0 2 6 0 x 2...
  • Page 167 NCU PCB 1/2 (FAX-515/FAX-525DT) (GERMANY, U.K., FRANCE, NORWAY, BELGIUM, SWITZERLAND, IRELAND, FINLAND, DENMARK, AUSTRIA, SPAIN, ITALY, SWEDEN)
  • Page 168 U K / F R A C o i l Photocoupler P h o t o c o u p l e r P h o t o c o u p l e r P h o t o c o u p l e r P h o t o c o u p l e r Photocoupler V a r i s t o r...
  • Page 169 NCU PCB (FAX-515/FAX-525MC) (AUSTRALIA)
  • Page 170 NCU PCB (FAX255/FAX275/FAX375MC) (CHINA, TAIWAN, HONG KONG, ASIA, INDIA)
  • Page 171 NCU PCB (FAX-525MC) (NEW ZEALAND)
  • Page 173 + 5 V 5 2 0 8 9 - 1 3 2 0 K O 0 + 5 V K O 1 + 5 V K O 2 G N D 5 2 0 8 9 - 1 4 2 0 K O 3 K O 4 K O 5...
  • Page 174 + 5 V K O 0 + 5 V K O 1 + 5 V K O 2 K I 0 G N D K O 3 K I 1 K O 4 K I 2 G A P N L 4 K O 5 K I 3 K O 6...
  • Page 175 Power Supply PCB (100-120 VAC)
  • Page 176 Power Supply PCB (200-240 VAC)