Canon MF4500 Series Service Manual
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Canon MF4500 Series Service Manual

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MF4500/MF4400/D500 Series
Service Manual Rev.1
Product Overview
Technical Overview
Periodical Services
Disassembly/Assembly
Adjustment
Service Mode
Appendix
1
2
3
4
5
6
7
8

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Table of Contents
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Summary of Contents for Canon MF4500 Series

  • Page 1 MF4500/MF4400/D500 Series Service Manual Rev.1 Product Overview Technical Overview Periodical Services Disassembly/Assembly Adjustment Trouble Shooting Error Codes Service Mode Appendix...
  • Page 2 This manual is copyrighted with all rights reserved. Under the copyright laws, this manual may changes in the contents of this manual over a long or short period, Canon will issue a new not be copied, reproduced or translated into another language, in whole or in part, without the edition of this manual.
  • Page 3 Explanation of Symbols The following rules apply throughout this Service Manual: The following symbols are used throughout this Service Manual. 1. Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with reference to the timing of Symbols Explanation Symbols...

  • Page 4: Table Of Contents

    Contents Technical Overview Basic Configuration -----------------------------------------------------------2-2 Configuration function ------------------------------------------------------------ 2-2 Basic Sequence -------------------------------------------------------------------- 2-2 Safety Precautions Basic Sequence of Operation ----------------------------------------------------------- 2-2 Print Sequence ------------------------------------------------------------------------------ 2-3 CDRH Provisions -------------------------------------------------------------0-2 Controller System -------------------------------------------------------------2-4 Laser Safety --------------------------------------------------------------------0-2 Main Controller --------------------------------------------------------------------- 2-4 About Laser Beams --------------------------------------------------------------- 0-2 General description ------------------------------------------------------------------------ 2-4 Handling Laser Scanner Unit --------------------------------------------------- 0-2 Engine Controller ------------------------------------------------------------------ 2-4...
  • Page 5 Service Works ---------------------------------------------------------------------2-14 Notes on service works ------------------------------------------------------------------2-25 Pickup And Feeding System --------------------------------------------- 2-26 At parts replacement ----------------------------------------------------------------------2-14 Overview ----------------------------------------------------------------------------2-26 Maintenance --------------------------------------------------------------------------------2-14 Notes on service works ------------------------------------------------------------------2-14 Overview -------------------------------------------------------------------------------------2-26 Image Formation System ------------------------------------------------- 2-15 Detecting Jams --------------------------------------------------------------------2-27 Overview/Configuration ---------------------------------------------------------2-15 Jam Detection Outline --------------------------------------------------------------------2-27 Overview -------------------------------------------------------------------------------------2-15 Delay Jams ----------------------------------------------------------------------------------2-28 Print Process --------------------------------------------------------------------------------2-15...
  • Page 6 List of Parts ---------------------------------------------------------------------4-3 Reader Unit -------------------------------------------------------------------------4-22 External View ----------------------------------------------------------------------- 4-3 2-sided Printer Unit List of External Cover/Interior: DADF Models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-22 (MF4580dn/D550) -------------------------------------------------------------------------- 4-3 1-sided Printer Unit List of External Cover/Interior: SADF Models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) ---4-24 (MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453/ External Cover, Interior ---------------------------------------------------- 4-26 MF4430) -------------------------------------------------------------------------------------- 4-4 Location of DADF Models List of External Cover/Interior: Copyboard Models...

  • Page 7: Single-Sided Models

    Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/ Before Removing the Copyboard Cover and Reader Unit -------------4-64 MF4410/MF4412) -----------------------------------------------------------------4-37 Removing the Copyboard Cover and Reader Unit -----------------------4-64 Removing the Rear Cover Before Removing the Copyboard Glass Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/ Models with copyboard ----------------------------------------------------------4-66 MF4410/MF4412) -----------------------------------------------------------------4-37 Removing the Copyboard Glass Document Exposure/Feeder System ---------------------------------- 4-39 Models with copyboard ----------------------------------------------------------4-66...
  • Page 8 MF4410/MF4412) -----------------------------------------------------------------4-80 4-96 Before Removing the Drive Belt Before Removing the Main Controller PCB Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/ Models with FAX (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/ D550/D520) ------------------------------------------------------------------------4-82 MF4450/MF4452/MF4453) -----------------------------------------------------4-99 Removing the Drive Belt Removing the Main Controller PCB Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/ Models with FAX (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/ D550/D520) ------------------------------------------------------------------------4-82 MF4450/MF4452/MF4453) -----------------------------------------------------4-99 Before Removing the Main Motor...
  • Page 9 Removing the Toner Sensor and Multi Pickup Sensor Unit D550/D520) ---------------------------------------------------------------------- 4-121 Models with FAX (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/ Removing the Fixing Assembly MF4450/MF4452/MF4453) --------------------------------------------------- 4-110 Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/ Before Removing the Multi Pickup Sensor Unit D550/D520) ---------------------------------------------------------------------- 4-121 Models without FAX (MF4430/MF4420n/MF4410/MF4412/D550/D520) - Before Removing the Fixing Assembly 4-112 Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/...
  • Page 10 Removing the Pickup Tray Unit Test Print Function ----------------------------------------------------------------- 6-2 Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/ Trouble Shooting Items ------------------------------------------------------6-3 MF4410/MF4412) --------------------------------------------------------------- 4-145 Image Faults ------------------------------------------------------------------------ 6-3 Removing the Pickup Roller -------------------------------------------------- 4-147 Smudged/Streaked ------------------------------------------------------------------------- 6-3 Version Upgrade --------------------------------------------------------------6-4 Before Removing the Pickup Solenoid Overview ----------------------------------------------------------------------------- 6-4 Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/ Preparation -------------------------------------------------------------------------- 6-4...
  • Page 11 BODY ------------------------------------------------------------------------------------------ 8-6 NETWORK -------------------------------------------------------------------------8-17 COUNTER --------------------------------------------------------------------------- 8-7 SSSW -----------------------------------------------------------------------------------------8-17 TOTAL ----------------------------------------------------------------------------------------- 8-7 Appendix PICK-UP -------------------------------------------------------------------------------------- 8-7 FEEDER -------------------------------------------------------------------------------------- 8-7 Service Tools -------------------------------------------------------------------9-2 JAM -------------------------------------------------------------------------------------------- 8-7 Solvent/Oil List -----------------------------------------------------------------9-3 FEEDER -------------------------------------------------------------------------8-8 General Circuit Diagram -----------------------------------------------------9-4 ADJUST ------------------------------------------------------------------------------ 8-8 General Timing Chart --------------------------------------------------------9-5 FUNCTION -------------------------------------------------------------------------- 8-8 FAX -------------------------------------------------------------------------------8-9 List of SSSW ------------------------------------------------------------------------ 8-9...

  • Page 12: Safety Precautions

    Safety Precautions ■ CDRH Provisions ■ Laser Safety ■ Toner Safety ■ Notes on Handling Lithium Battery ■ Notes on Assembly/ Disassembly F-0-1 MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/ MF4453/MF4430/MF4420n/MF4550d/MF4410/MF4412/D550/D520 Series...

  • Page 13: About Laser Beams

    CDRH Provisions Laser Safety Food and Drug CDRH (Center for Devices and Radiological Health) under FDA (Food and About Laser Beams Drug Administration) enforced provisions of the section for laser and laser products on August 2, 1976. These provisions are applicable to all laser products manufactured or assembled Laser radiation may be hazardous to human.

  • Page 14: Toner Safety

    Toner Safety Notes on Assembly/Disassembly Follow the items below to assemble/disassemble the device. About Toner 1. Disconnect the power plug to avoid any potential dangers during assembling/disassembling works. Toner is a nontoxic matter composed of plastic, iron and a trace of pigments. 2.

  • Page 15: Product Overview

    Product Overview ■ Product Lineups ■ Features ■ Product Specifications ■ Name of Parts Product Overview...

  • Page 16: Main Unit

    Product Overview > Product Lineups > Main Unit Product Lineups Model MF4550d/MF4553d/MF4554d Config 4in1 SADF Main Unit Model MF4580dn MF4570dn Config 4in1 DADF+N 4in1 SADF+N Design Design DADF SADF PLATEN 2-Sided Engine 1-Sided LAN port DADF SADF PLATEN T-1-2 2-Sided Engine Model D550...

  • Page 17: Options

    Product Overview > Product Lineups > Options Options Model MF4450/MF4452/MF4453 MF4430 Config 4in1 SADF 3in1 SADF • Hand Set Only FAX Model Design DADF SADF PLATEN 2-Sided Engine 1-Sided LAN port T-1-4 Model MF4420n MF4410/MF4412 Config 3in1 Pla+N 3in1 Pla Design DADF SADF...

  • Page 18: Features

    Product Overview > Product Specifications > Main Unit Specifications Features Product Specifications Features Main Unit Specifications 1. Small-size, high-speed monochrome printer Copyboard Fixed This equipment has a compact body that realizes high-speed print of 25 ppm. Device Installation Desktop Light source LED (RGB) Image scanning CIS (color)
  • Page 19 Product Overview > Product Specifications > Main Unit Specifications Print Speed MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520 Ozone emission Initial : average 0.01 ppm or less 26 ppm (LTR)/25 ppm (A4) After use : average 0.035 ppm MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412 Dimensions (W x D x H) MF4580dn/D550 390 x 429 x 361 mm 24 ppm (LTR)/23 ppm (A4) MF4570dn/MF4550d/MF4553d/MF4454d/MF4452/MF4453/...

  • Page 20: Sadf/Dadf Specifications

    Product Overview > Product Specifications > FAX Specifications SADF/DADF Specifications FAX Specifications Document setting direction face-up method Communication Protocol Super G3 Document setting position Center reference Modem speed 33.6 kbps Document type Sheet document Data compression method MH, MR, MMR Document size Size : A4R/B5R/A5/B6 (landscape)/LGL/LTRR Dial method...

  • Page 21: Name Of Parts

    Product Overview > Name of Parts > External View > MF4420n/MF4410/MF4412/D520 Name of Parts ● Rear Side External View ■ MF4420n/MF4410/MF4412/D520 ● Front Side MF4420n MF4410 [13] /MF4412 /D520 [12] F-1-2 Name Copyboard Glass Copyboard Upper Cover [11] Left Cover Power Supply Cord Slot Power Switch Rear Cover...
  • Page 22 Product Overview > Name of Parts > External View > MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453/MF4430 ■ MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/ Rear Side MF4453/MF4430 ● Front Side [10] [11] [21] [12] [13] [14] [20] [10] [10] MF4570dn MF4550d /MF4450 MF4430 /MF4553d /MF4452 [19] /MF4554d /MF4453 F-1-4 [15] Name [18] [16] [17]...

  • Page 23: Mf4580Dn/D550

    Product Overview > Name of Parts > External View > MF4580dn/D550 ■ MF4580dn/D550 ● Rear Side ● Front Side [10] [11] [21] [10] [12] MF4580dn D550 [13] [14] [20] F-1-6 Name Copyboard Glass [19] Copyboard Upper Cover Left Cover Power Supply Cord Slot [15] Power Switch [18]...

  • Page 24: Cross Section

    Product Overview > Name of Parts > Cross Section > MF4410/MF4412/MF4420n/MF4430/MF4450/MF4452/MF4453 1-10 Cross Section ■ MF4410/MF4412/MF4420n/MF4430/MF4450/MF4452/MF4453 ● Printer ■ MF4550d/MF4553d/MF4554d/MF4570dn/MF4580dn/D520/ D550 ● Printer [12] [11] [10] F-1-8 Name Fixing Pressure Roller [14] [13] [12] [11] [10] Fixing Film Unit Delivery Roller F-1-7 Fixing Assembly Name...

  • Page 25: Control Panel

    Product Overview > Name of Parts > Control Panel 1-11 Control Panel (1) Mode switching keys Press to switch the mode to copy, fax* , or scan. (2) [One-touch Speed Dial] keys Press to specify recipients registered under one-touch keys. MF4580dn/MF4570dn/MF4550d/MF4450 ([01]/[02]/[03]/[04] keys) [Address Book] key *...

  • Page 26: Technical Overview

    Technical Overview ■ Basic Configuration ■ Controller System ■ Document Exposure/Feeder System ■ Laser Exposure System ■ Image Formation System ■ Fixing System ■ Pickup And Feeding System ■ External And Controls System Technical Overview...

  • Page 27: Configuration Function

    Technical Overview > Basic Configuration > Basic Sequence > Basic Sequence of Operation Basic Configuration Basic Sequence ■ Basic Sequence of Operation Configuration function The engine controller controls the operation sequence. The following table provides an outline The machine may be broadly divided into the following 7 functional blocks: engine control of machine operation occurring from when the power switch is turned on to when printing system, document exposure/feeding system, laser exposure system, image formation system, ends and motors stop, indicating the purposes of intervals and engine operation.

  • Page 28: Print Sequence

    Technical Overview > Basic Configuration > Basic Sequence > Print Sequence Print Sequence ■ Power-on (Unit:Seconds) WAIT STBY INTR PRINT LSTR STBY Sequence Controls at 80 C Print temperature control Fixing heater Relay Waiting for Print command Print command Print command a print command Scanner motor BD emission/...

  • Page 29: Controller System

    Technical Overview > Controller System > Engine Controller > General description Controller System Engine Controller ■ General description Main Controller Engine controller is the circuit to control the operation sequence of the host machine and it is ■ General description controlled by the CPU inside the engine controller.

  • Page 30: Service Works

    Technical Overview > Controller System > Service Works > Notes on service works Service Works ■ At parts replacement No work is required for this product at parts replacement. ■ Maintenance No periodically replaced parts, durable parts or periodical service is set for this product. ■...

  • Page 31: Document Exposure/Feeder System

    Technical Overview > Document Exposure/Feeder System > Document Exposure System > Major Components Document Exposure/Feeder System ■ Major Components Followings are the major components for Document Exposure System. Document Exposure System • The contact sensor to scan document • The Reader motor, the drive pulley, the drive belt, to shift the contact sensor ■...

  • Page 32: Document Feeder System

    Technical Overview > Document Exposure/Feeder System > Document Feeder System > Overview Document Feeder System Within the SADF pickup assembly is the stop [1] for the purpose of preventing the push-in of original, which descends/ascends in conjunction with the gear [2] on the end of the pickup ■...
  • Page 33 Technical Overview > Document Exposure/Feeder System > Document Feeder System > Overview ● DADF • Reverse to Reading of the 2nd side Pickup/Feed/Delivery Operation The Double-side Auto Document Feeder (DADF) mounted onto this host machine is dedicated to stream-reading. 1 motor (DADF motor) is engaged in pickup/feeding/delivery. At the start of copy/fax/scan, the DADF motor is driven by the drive command from the SCNT to pickup/feed the originals set face up on the original tray one by one in order from the top.

  • Page 34: Various Control

    Technical Overview > Document Exposure/Feeder System > Document Feeder System > Various Control ■ Various Control In the case of SADF ● Original Detection Document There are two types of original detection in this equipment. Sensor 1. Original Presence / Absence Detection Detected by DS (Document Sensor Document End Sensor...

  • Page 35: Service Works

    Technical Overview > Document Exposure/Feeder System > Service Works > Notes on service works 2-10 Service Works ● Jam Detection The following cases are judged as jam. ■ At parts replacement 1. In case of delay in reaching DS/DES or stationary during scanning of original No work is required for this product at parts replacement.

  • Page 36: Laser Exposure System

    Technical Overview > Laser Exposure System > Overview > Overview 2-11 Laser Exposure System The operational sequence of the laser scanner unit is described below. 1) When the Main controller sends print instruction command, the Engine controller rotates the Four-faced mirror, causing the Scanner motor to rotate. Overview 2) When the Scanner motor starts to rotate, the Engine controller emits the laser forcibly ■...

  • Page 37: Controlling The Laser Activation Timing

    Technical Overview > Laser Exposure System > Controlling the Laser Activation Timing > Horizontal Sync Control 2-12 Controlling the Laser Activation Timing The engine controller sends the laser control signals (CNT0, CNT1, CNT2) for changing the operation mode of the laser to the logic circuit in the laser driver IC, as well as the video ■...

  • Page 38: Laser Control

    Technical Overview > Laser Exposure System > Laser Scanner Motor Control > Overview 2-13 Laser Control Laser Scanner Motor Control ■ Auto Power Control (APC) ■ Overview This is the control to emit a constant level of laser diode. This is the control to rotate the scanner motor at a constant speed to emit the laser beam on There are two types of APC;...

  • Page 39: Scanner Motor Fault Detection

    Technical Overview > Laser Exposure System > Service Works > Notes on service works 2-14 ■ Scanner Motor Fault Detection This is the detection of faults in the laser scanner unit. When the laser unit scanner unit falls into either of the following status, the engine controller judges it as a fault in the laser scanner unit system and notices the status of fault to the main controller.

  • Page 40: Image Formation System

    Technical Overview > Image Formation System > Overview/Configuration > Print Process 2-15 Image Formation System ■ Print Process This explains the basic process of the operations that a printer executes for image formation. Overview/Configuration The print process of this equipment is divided largely into 5 blocks, 7 steps. Toner images are formed on papers by executing the steps of each block in order.

  • Page 41: Static Latent Image Formation Block

    Technical Overview > Image Formation System > Overview/Configuration > Static Latent Image Formation Block 2-16 ■ Static Latent Image Formation Block Step 2: Laser beam exposure In this step, static latent images are formed on the photosensitive drum with laser beam. This block is comprised of two steps and forms static latent images on the photosensitive When laser beams are scanned on the photosensitive drum negatively charged, bright areas drum.

  • Page 42: Development Block

    Technical Overview > Image Formation System > Overview/Configuration > Transfer Block 2-17 ■ Development Block ■ Transfer Block This block is comprised of one step; it puts toners to the static latent images on the surface of This block is comprised of two steps; it transfers toner images on the surface of the the photosensitive drum and visualizes the images using toner projection development.

  • Page 43: Fixing Block

    Technical Overview > Image Formation System > Overview/Configuration > Drum Cleaning Block 2-18 Step 5: Separation ■ Drum Cleaning Block In this step, DC negative bias is applied to the static eliminator according to the elasticity of The drum cleaning block removes the toner remained on the photosensitive drum. papers to separate the papers from the photosensitive drum.

  • Page 44: High-Voltage Control

    Technical Overview > Image Formation System > High-Voltage Control > Generating Transfer Bias 2-19 High-Voltage Control ■ Generating Developing Bias The developing bias is a DC negative bias that is output to affix toner to the static latent ■ Overview images formed on the photosensitive drum.

  • Page 45: Toner Cartridge

    Technical Overview > Image Formation System > Toner Cartridge > Operation when toner level is Low/Nearly Out 2-20 Toner Cartridge ■ Specification of Toner level display Toner level can be checked by pressing Status Monitor/Cancel key and selecting toner level. ■...

  • Page 46: Toner Cartridge Absence/Presence Detection

    Technical Overview > Image Formation System > Service Works > Notes on service works 2-21 ■ Toner Cartridge Absence/Presence Detection If jam occurs when ‘Toner cartridge absent’ is detected, check if there is a fault in the leading edge sensor and the detection flag. The engine controller detects the position of the Toner cartridge detection flag to judge the absence/presence of the Toner cartridge.

  • Page 47: Fixing System

    Technical Overview > Fixing System > Overview/Configuration > Main Parts of Fixing assembly 2-22 Fixing System ■ Main Parts of Fixing assembly Engine controller Overview/Configuration Fixing control FIXING HEATER ■ Overview DRIVE signal Fixing/delivery system consists of the fixing film unit, pressure roller and delivery roller etc. Fixing heater These rollers are driven by the main motor (M1).

  • Page 48: Various Control Mechanisms

    Technical Overview > Fixing System > Various Control Mechanisms > Protective Functions 2-23 Various Control Mechanisms There are 11 types of target fixing temperature depending on the fixing mode. These types are according to the paper type settings and resolution settings on a driver. ■...

  • Page 49: Failure Detection

    Technical Overview > Fixing System > Various Control Mechanisms > Protective Functions 2-24 to the fixing heater. 7) Thermistor low temperature detection 2) 3) Protection function by temperature fuse (TP1) Temperature of the Thermistor is monitored for every 200 msec when paper is at fixing When the fixing heater temperature rises abnormally and temperature fuse (TP1) nip during the Fixing Assembly control.

  • Page 50: Throughput Down Control

    Technical Overview > Fixing System > Service Works > Notes on service works 2-25 ● Other Functions *2 : Measures against wrinkle and curl. ■ Throughput Down Control Number of Fed Sheets Half speed Half speed Half speed Half speed This machine performs the throughput down control that extends the paper interval and lower 1 to 2 11 ppm...

  • Page 51: Pickup And Feeding System

    Technical Overview > Pickup And Feeding System > Overview > Overview 2-26 Pickup And Feeding System Single Feed Main controller Overview ■ Overview Duplex Feed Engine controller Main controller PS702 Delivery roller Fixing Pressure roller Engine controller Delivery tray PS701 Fixing Fixing Film Delivery roller...

  • Page 52: Detecting Jams

    Technical Overview > Pickup And Feeding System > Detecting Jams > Jam Detection Outline 2-27 Detecting Jams The pickup and feeding system executes pickup and feeding of papers and is composed of the main motor, solenoid, and rollers. ■ Jam Detection Outline In this equipment, pickup from the pickup tray and manual feed tray is available.

  • Page 53: Delay Jams

    Technical Overview > Pickup And Feeding System > Detecting Jams > Delay Jams 2-28 ■ Delay Jams B. When there is a preceding paper 1 ● Delivery Delay Jam Paper Lead Edge Sensor There are 3 types of delivery delay jam detections as follows: A.
  • Page 54 Technical Overview > Pickup And Feeding System > Detecting Jams > Delay Jams 2-29 ● Reversal Delay Jam ● Delivery Delay during cleaning A reversal delay jam is determined when the Fixing Delivery Sensor (PS701) detects absence A delivery delay jam is determined if the Fixing Delivery Sensor (PS701) fails to detect of paper at the time of 440 msec elapsed after the start of reversal operation.

  • Page 55: Stationary Jams

    Technical Overview > Pickup And Feeding System > Detecting Jams > Stationary Jams 2-30 ■ Stationary Jams ● Pickup Stationary Jam during auto delivery A pickup stationary jam is determined if the Paper Lead Edge Sensor (PS751) detects ● Pickup Stationary Jam presence of paper at the time of 1115 msec elapsed after the start of auto delivery and then Without pre-feed, a feed stationary jam is determined if the TOP sensor (PS751) cannot the Paper Lead Edge Sensor (PS751) detects presence of paper after the paper continued to...

  • Page 56: Other Jams

    Technical Overview > Pickup And Feeding System > Detecting Jams > Other Jams 2-31 ■ Other Jams ● No-paper detection during cleaning ● Fixing Wrap Jam Solenoid Paper Lead Edge 1370 Sensor Paper Lead Edge Sensor Fixing Delivery paper detection Sensor period fixing wrap jam...

  • Page 57: Service Works

    Technical Overview > Pickup And Feeding System > Service Works > Notes on service works 2-32 Service Works ■ At parts replacement No work is required for this product at parts replacement. ■ Maintenance No periodically replaced parts, durable parts or periodical service is set for this product. ■...

  • Page 58: External And Controls System

    Technical Overview > External And Controls System > Power Supply > Protective Functions 2-33 External And Controls System ■ Protective Functions ● Power protective function Power Supply Low voltage power circuit carries the overcurrent preventive function against and overvoltage preventive function that block the voltage output automatically to prevent the power circuit ■...

  • Page 59: Service Works

    Technical Overview > External And Controls System > Service Works > Notes on service works 2-34 Service Works ■ At parts replacement No work is required for this product at parts replacement. ■ Maintenance No periodically replaced parts, durable parts or periodical service is set for this product. ■...

  • Page 60: Periodical Services

    Periodical Services ■ Periodically Replaced Parts ■ Consumables ■ Periodical Service ■ Cleaning Periodical Services...
  • Page 61 Periodical Services > Consumables > Consumables Periodically Replaced Parts Consumables Periodically Replaced Parts Consumables There is no periodically replaced part with this machine. There is no consumable with this machine. Periodical Services > Consumables > Consumables...

  • Page 62: Periodical Service

    Periodical Services > Cleaning > Printer Periodical Service Cleaning Scheduled Servicing Printer There is no portion that requires schedule servicing in this equipment. [7] [8] F-3-1 Cleaning parts Procedure Duplex Feed Roller Clean it with a dry lint-free paper. Fixing inlet guide Clean it with a dry lint-free paper.

  • Page 63: Reader Adf

    Periodical Services > Cleaning > Reader ADF > DADF Reader ADF ■ DADF ■ SADF F-3-3 Cleaning parts Procedure DADF Pickup Roller Unit Open the ADF and wipe off the smudge with the soft dry cloth. F-3-2 DADF Separation Pad Open the ADF and wipe off the smudge with the soft dry cloth.

  • Page 64: Disassembly/Assembly

    Disassembly/Assembly ■ List of Parts ■ List of Connectors ■ External Cover, Interior ■ Document Exposure/Feeder System ■ Controller System ■ Laser Exposure System ■ Image Formation System ■ Fixing System ■ Pickup And Feeding System Disassembly/Assembly...
  • Page 65 Disassembly/Assembly > Outline Outline This chapter describes disassembling/assembling procedure of this equipment. The service technician is to identify the cause of the failures according to "Chapter 5 Troubleshooting" and to replace the faulty parts by following the disassembling procedure. In addition, replace the consumable parts by following the same disassembling procedure.

  • Page 66: External View

    Disassembly/Assembly > List of Parts > External View > List of External Cover/Interior: DADF Models (MF4580dn/D550) List of Parts Name Reference Original Feed Auxiliary Tray External View Side Guide Plate (Front) [9] Original Delivery Tray - ■ List of External Cover/Interior: DADF Models p.

  • Page 67: List Of External Cover/Interior: Sadf Models (Mf4570Dn/Mf4550D/Mf4553D/Mf4554D/Mf4450/Mf4452/Mf4453/ Mf4430)

    Disassembly/Assembly > List of Parts > External View > List of External Cover/Interior: SADF Models (MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453/MF4430) ● Rear Side ■ List of External Cover/Interior: SADF Models (MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/ MF4453/MF4430) ● Front Side [10] [10] [11] MF4580dn D550 [21] F-4-2 Name Reference [12] [1] Copyboard Glass p.
  • Page 68 Disassembly/Assembly > List of Parts > External View > List of External Cover/Interior: SADF Models (MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453/MF4430) ● Rear Side Name Reference Side Guide Plate (Front) SADF Front Cover p. 4-57 Original Delivery Tray p. 4-79 [10] Control Panel Unit p. 4-79 Delivery Auxiliary [11] Tray...

  • Page 69: List Of External Cover/Interior: Copyboard Models

    Disassembly/Assembly > List of Parts > External View > List of External Cover/Interior: Copyboard Models (MF4420n/MF4410/MF4412/D520) ■ List of External Cover/Interior: Copyboard Models Name Reference [10] Tray Cover (MF4420n/MF4410/MF4412/D520) [11] Front Cover Unit p. 4-35 [12] Delivery Tray p. 4-35 [13] Upper Cover p.

  • Page 70: Main Unit

    Disassembly/Assembly > List of Parts > Main Unit > Lists of DADF Unit and Reader Unit: FAX Models (MF4580dn) Main Unit ● Rear Side ■ Lists of DADF Unit and Reader Unit: FAX Models (MF4580dn) MF4420n MF4410 /MF4412 /D520 F-4-6 Name Reference [1] Copyboard Glass...

  • Page 71: Lists Of Dadf Unit And Reader Unit: Models Without Fax (D550)

    Disassembly/Assembly > List of Parts > Main Unit > Lists of SADF Unit and Reader Unit: FAX Models (MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453) ■ Lists of DADF Unit and Reader Unit: Models without FAX ■ Lists of SADF Unit and Reader Unit: FAX Models (D550) (MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/ MF4453)

  • Page 72: Lists Of Sadf Unit And Reader Unit: Models Without Fax (Mf4430)

    Disassembly/Assembly > List of Parts > Main Unit > Lists of SADF Unit and Reader Unit: Models without FAX (MF4430) ■ Lists of SADF Unit and Reader Unit: Models without FAX Name Service Parts No. Reference SADF Unit p. 4-55 (MF4430) FM4-7518 MF4570dn (JP)

  • Page 73: Lists Of Copyboard Cover And Reader Unit (Mf4420N/Mf4410/Mf4412/D520)

    Disassembly/Assembly > List of Parts > Main Unit > List of 2-sided Printer Unit (MF4580dn/MF4550d/MF4570dn/D520/D550) 4-10 ■ Lists of Copyboard Cover and Reader Unit ■ List of 2-sided Printer Unit (MF4420n/MF4410/MF4412/D520) (MF4580dn/MF4550d/MF4570dn/D520/D550) F-4-11 Name Service Parts No. Reference F-4-12 Document Cover Name Service Parts No.

  • Page 74: List Of 1-Sided Printer Unit (Mf4450/Mf4452/Mf4453/Mf4430/Mf4420N/Mf4410/Mf4412)

    Disassembly/Assembly > List of Parts > Location of Electric parts > List of DADF Unit 4-11 Location of Electric parts ■ List of 1-sided Printer Unit (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/ ■ List of DADF Unit MF4412) F-4-14 Name Service Parts No. Main Unit Reference DS Sensor WG8-5696...

  • Page 75: List Of Sadf Unit

    Disassembly/Assembly > List of Parts > Location of Electric parts > List of 2-sided Printer Unit (MF4580dnMF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-12 ■ List of SADF Unit ■ List of 2-sided Printer Unit (MF4580dnMF4570dn/MF4550d/MF4553d/MF4554d/D550/ D520) ● List of Motor/Fan F-4-15 Name Service Parts No. Main Unit Reference DS Sensor...
  • Page 76 Disassembly/Assembly > List of Parts > Location of Electric parts > List of 2-sided Printer Unit (MF4580dnMF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-13 ● List of Solenoid ● List of Sensor F-4-18 F-4-19 Name Service Parts No. Main Unit Reference Name Service Parts No. Main Unit Reference Duplex Solenoid RK2-0420...
  • Page 77 Disassembly/Assembly > List of Parts > Location of Electric parts > List of 2-sided Printer Unit (MF4580dnMF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-14 ● List of Switch ● List of Heater/Thermoswitch/Thermistor F-4-20 Name Service Parts No. Main Unit Reference F-4-21 FAX model Name Service Parts No. Main Unit Reference MF4580dn/...
  • Page 78 Disassembly/Assembly > List of Parts > Location of Electric parts > List of 2-sided Printer Unit (MF4580dnMF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-15 ● List of PCB Name Service Parts No. Main Unit Reference FAX model MF4580dn [10] (JP)/MF4570dn (JP)/ MF4550d (JP) FAX model MF4580dn (LTN, SG, HK, KR, EUR)/ MF4570dn (TW, US, CA, FM4-7185...

  • Page 79: List Of 1-Sided Printer Unit (Mf4450/Mf4452/Mf4453/Mf4430/Mf4420N/Mf4410 /Mf4412)

    Disassembly/Assembly > List of Parts > Location of Electric parts > List of 1-sided Printer Unit (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410 /MF4412) 4-16 ■ List of 1-sided Printer Unit ● List of Solenoid (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410 / MF4412) ● List of Motor/Fan F-4-24 Name Service Parts No. Main Unit Reference Pickup Solenoid...
  • Page 80 Disassembly/Assembly > List of Parts > Location of Electric parts > List of 1-sided Printer Unit (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410 /MF4412) 4-17 ● List of Sensor ● List of Switch F-4-26 Name Service Parts No. Main Unit Reference F-4-25 FAX model MF4450/ Name Service Parts No.
  • Page 81 Disassembly/Assembly > List of Parts > Location of Electric parts > List of 1-sided Printer Unit (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410 /MF4412) 4-18 ● List of Heater/Thermoswitch/Thermistor ● List of PCB F-4-27 F-4-28 Name Service Parts No. Main Unit Reference Name Service Parts No. Main Unit Reference Thermoswitch...
  • Page 82 Disassembly/Assembly > List of Parts > Location of Electric parts > List of 1-sided Printer Unit (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410 /MF4412) 4-19 Name Service Parts No. Main Unit Reference FM4-7283 MF4450 (100V) FM4-7282 MF4450 (120V, 230V)/ MF4453 (230V) FM4-7171 MF4452 (230V) Main Controller p.
  • Page 83 Disassembly/Assembly > List of Parts > Location of Electric parts > List of 1-sided Printer Unit (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410 /MF4412) 4-20 4-20 Disassembly/Assembly > List of Parts > Location of Electric parts > List of 1-sided Printer Unit (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410 /MF4412)

  • Page 84: List Of Connectors

    Disassembly/Assembly > List of Connectors > SADF Unit (MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453/MF4430) 4-21 List of Connectors SADF Unit (MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/ DADF Unit MF4452/MF4453/MF4430) (MF4580dn/D550) J1402 J1402 J1401 J1403 J1403 F-4-30 J No. Name Relay J No. Name REMARKS Connector F-4-29 Main Controller PCB J1402 DES Sensor J No.

  • Page 85: Reader Unit

    Disassembly/Assembly > List of Connectors > 2-sided Printer Unit (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-22 Reader Unit 2-sided Printer Unit (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/ D550/D520) J702 J802 J1101 J701 J1103 J1102 J751 J101 J1154 J562 J1153 F-4-31 J551 Relay J No. Name J No. Name REMARKS J1151 J552 Connector J571...
  • Page 86 Disassembly/Assembly > List of Connectors > 2-sided Printer Unit (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-23 J No. Name Relay J No. Name REMARKS Connector J602 Main Controller PCB J1204 FAX-NCU PCB FAX model J905 (MF4580dn/ MF4570dn/MF4550d/ J901 J1152 MF4553d/MF4554d) J902 J601 Main Controller PCB J1201 FAX-NCU PCB FAX model (MF4580dn/...

  • Page 87: 1-Sided Printer Unit

    Disassembly/Assembly > List of Connectors > 1-sided Printer Unit (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-24 1-sided Printer Unit (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/ J905 MF4412) J901 J1152 J902 J702 J802 J701 J751 J605 J401 J601 J1202 J101 J1201 J1205 J562 J1204 J1153 J581 J551 J602 J1305 J1151 J1309 J552 J571 J801...
  • Page 88 Disassembly/Assembly > List of Connectors > 1-sided Printer Unit (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-25 Relay J No. Name J No. Name REMARKS Connector J1202 FAX-NCU PCB J1309 Pseudo CI PCB FAX model (MF4450) J1205 FAX-NCU PCB J1205 Speaker FAX model (MF4450) T-4-35 4-25 Disassembly/Assembly >...

  • Page 89: External Cover, Interior

    Disassembly/Assembly > External Cover, Interior > Location of DADF Models (MF4580dn/D550) > Front Side 4-26 External Cover, Interior Name Reference Original Feed Auxiliary Tray Side Guide Plate Location of DADF Models (Front) (MF4580dn/D550) [9] Original Delivery Tray - p. 4-79 [10] Control Panel Unit p.

  • Page 90: Rear Side

    Disassembly/Assembly > External Cover, Interior > Location of SADF Models (MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453/MF4430) > Front Side 4-27 Location of SADF Models ■ Rear Side (MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/ MF4452/MF4453/MF4430) ■ Front Side [10] [10] [11] MF4580dn D550 [21] F-4-37 [12] Name Reference [1] Copyboard Glass p.

  • Page 91: Rear Side

    Disassembly/Assembly > External Cover, Interior > Location of SADF Models (MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453/MF4430) > Rear Side 4-28 ■ Rear Side Name Reference Side Guide Plate (Front) SADF Front Cover p. 4-57 Original Delivery Tray p. 4-79 [10] Control Panel Unit p. 4-79 Delivery Auxiliary [11] Tray...

  • Page 92: Location Of Copyboard Models (Mf4420N/Mf4410/Mf4412/D520)

    Disassembly/Assembly > External Cover, Interior > Location of Copyboard Models (MF4420n/MF4410/MF4412/D520) > Front Side 4-29 Location of Copyboard Models Name Reference Telephon Line (MF4420n/MF4410/MF4412/D520) [10] Jack T-4-39 ■ Front Side [13] [12] [11] [10] F-4-40 Name Reference Copyboard Cover p. 4-64 Control Panel Unit p.

  • Page 93: Rear Side

    Disassembly/Assembly > External Cover, Interior > Location of Copyboard Models (MF4420n/MF4410/MF4412/D520) > Rear Side 4-30 ■ Rear Side Name Reference [10] Tray Cover [11] Front Cover Unit p. 4-35 [12] Delivery Tray p. 4-35 [13] Upper Cover p. 4-35 T-4-40 MF4420n MF4410 /MF4412...

  • Page 94: Removing The Left Cover

    Disassembly/Assembly > External Cover, Interior > Removing the Left Cover Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-31 Removing the Left Cover 2) Remove the 2 rear claws [1] and the claw in the lower side [2]. Duplex models (MF4580dn/MF4570dn/MF4550d/ MF4553d/MF4554d/D550/D520) Note: The locations of the 5 left cover claws [1] and 3 hooks [2] are shown here. F-4-44 3) Open the reader unit and remove the 2 upper claws [1].

  • Page 95: Removing The Left Cover

    Disassembly/Assembly > External Cover, Interior > Removing the Left Cover Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-32 Removing the Left Cover 2) Remove the 2 rear claws [1] and the lower claw [2]. Single-sided models (MF4450/MF4452/MF4453/ MF4430/MF4420n/MF4410/MF4412) Note: The locations of the 5 left cover claws [1] and 3 hooks [2] are shown here. F-4-48 3) Open the reader unit and remove the 2 upper claws [1].

  • Page 96: Removing The Right Cover

    Disassembly/Assembly > External Cover, Interior > Removing the Right Cover Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-33 Removing the Right Cover 2) Remove the 2 rear claws [1] and the lower claw [2]. Duplex models (MF4580dn/MF4570dn/MF4550d/ MF4553d/MF4554d/D550/D520) Note: The locations of the 5 right cover claws [1] and 3 hooks [2] are shown here. F-4-52 3) Open the reader unit and remove the 2 upper claws [1].

  • Page 97: Removing The Right Cover

    Disassembly/Assembly > External Cover, Interior > Removing the Right Cover Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-34 Removing the Right Cover 2) Remove the 2 rear claws [1] and the lower claw [2]. Single-sided models (MF4450/MF4452/MF4453/ MF4430/MF4420n/MF4410/MF4412) Note: The locations of the 5 right cover claws [1] and 3 hooks [2] are shown here. F-4-56 3) Open the reader unit and remove the 2 upper claws [1].

  • Page 98: Before Removing The Front Cover Unit

    Disassembly/Assembly > External Cover, Interior > Removing the Upper Cover 4-35 Before Removing the Front Cover Unit Before Removing the Upper Cover 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) 1-2) Remove the left cover.
  • Page 99 Disassembly/Assembly > External Cover, Interior > Removing the Upper Cover 4-36 5) Remove the upper cover [1]. • 6 screws (black TP) [2] F-4-61 Caution: When assembling the upper cover, mount 2 fixing pressure arms [2] and a cartridge lock arm [3] to the delivery tray [1]. F-4-59 4) Remove the delivery tray [1].

  • Page 100: Before Removing The Rear Cover

    Disassembly/Assembly > External Cover, Interior > Removing the Rear Cover Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-37 Before Removing the Rear Cover 3) Remove the rear cover [1]. • 1 claw [2] Single-sided models (MF4450/MF4452/MF4453/ • 2 hooks [3] MF4430/MF4420n/MF4410/MF4412) 1) Remove the left cover. (Single-sided models) (Refer to page 4-32) 2-1) Remove the SADF unit and reader unit.
  • Page 101 Disassembly/Assembly > External Cover, Interior > Removing the Rear Cover Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-38 4-38 Disassembly/Assembly > External Cover, Interior > Removing the Rear Cover Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412)
  • Page 102 Disassembly/Assembly > Document Exposure/Feeder System > Location of SADF Unit and Reader Unit (MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453/MF4430) 4-39 Document Exposure/Feeder System Location of SADF Unit and Reader Unit (MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/ Location of DADF Unit and Reader Unit MF4452/MF4453/MF4430) (MF4580dn/D550) [10] [11] [10] F-4-66 F-4-65 Name Service Parts No.

  • Page 103: Location Of Copyboard Cover And Reader Unit

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Unit and Reader Unit 4-40 Location of Copyboard Cover and Reader Unit Before Removing the DADF Unit and Reader Unit (MF4420n/MF4410/MF4412/D520) 1) Remove the left cover. (Duplex models) (Refer to page 4-31) Removing the DADF Unit and Reader Unit 1) Close the DADF Unit + Reader Unit.
  • Page 104 Disassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Unit and Reader Unit 4-41 7) Remove the DADF unit and reader unit [1]. • 2 claws [2] Caution: When disassembling/assembling the DADF unit and reader unit, be careful not to damage the flat cables and harnesses with [A] part.

  • Page 105: Before Removing The Dadf Unit

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Unit 4-42 Before Removing the DADF Unit Caution: When mounting the DADF unit and reader unit, fix the 2 hinge arm claws [1] to the 2 1) Remove the left cover. (Duplex models) (Refer to page 4-31) latches [2] in the reader unit.
  • Page 106 Disassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Unit 4-43 3) Unlock the reader lock [1] in the lower side of the reader unit and open the DADF unit [2]. F-4-74 2) Disengage the reader harness [1] from the harness guide [A]. F-4-76 4) Remove the DADF unit [1].

  • Page 107: Before Removing The Dadf Pickup Unit

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Pickup Unit 4-44 Before Removing the DADF Pickup Unit Caution: When assembling the DADF unit, pass the DADF harness [1] through the harness 1) Remove the left cover. (Duplex models) (Refer to page 4-31) guide [A].
  • Page 108 Disassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Pickup Unit 4-45 2) Push the claw [1] down to remove the DADF upper front cover [2]. Caution: When assembling the DADF upper front cover, align the 2 left-side hook [1] to the DADF front cover hole [A] to mount the cover.
  • Page 109 Disassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Pickup Unit 4-46 3) Open the DADF tray [1] to the stop position. Then, release the claw [3] by pushing the 4) Open the DADF tray [1] as far as the position shown in the below diagram and then hook [2] in the direction of the arrow [A] with a flat-blade screwdriver, and move the tray in remove in an upward direction.
  • Page 110 Disassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Pickup Unit 4-47 6) Remove the DADF upper cover [1]. 8) Remove the DADF unit [1]. • 2 shafts [2] • 5 screws [2] F-4-85 7) Disengage the DADF unit communication cable [1] from the harness guide [A]. F-4-87 F-4-86 4-47...

  • Page 111: Before Removing The Dadf Motor Unit

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Motor Unit 4-48 Before Removing the DADF Motor Unit 2) Remove the DADF motor unit [1]. 1) Remove the left cover. (Duplex models) (Refer to page 4-31) Caution: 2) Remove the DADF unit and reader unit. (Refer to page 4-40) Gently remove the DADF motor unit to prevent the gear phase from becoming 3) Remove the DADF unit.

  • Page 112: Before Removing The Dadf Solenoid Unit

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Solenoid Unit 4-49 Before Removing the DADF Solenoid Unit Caution: When assembling the DADF motor unit, follow the below steps. 1) Remove the left cover. (Duplex models) (Refer to page 4-31) 2) Remove the DADF unit and reader unit.

  • Page 113: Removing The Dadf Pickup Roller Unit

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Pickup Roller Unit 4-50 Removing the DADF Pickup Roller Unit Caution: When assembling the DADF solenoid unit, be sure to put the solenoid shaft [1] through the hole [A] on the solenoid arm. Caution: When assembling the DADF solenoid unit, ensure that the 2 DADF pickup unit shafts [2] Do not touch the surface of the roller.
  • Page 114 Disassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Pickup Roller Unit 4-51 3) Release the claw [1] and remove the gear [2]. 5) Remove the DADF pickup roller unit [1]. Caution: Caution: When assembling the DADF pickup roller unit, align the gear [2] and the D-cut surface When assembling/disassembling the DADF pickup roller unit, take care not to lose the of the DADF pickup roller shaft [3] to mount the unit.

  • Page 115: Removing The Dadf Separation Pad

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Separation Pad 4-52 Removing the DADF Separation Pad 3) Remove the 2 screws [1], hold the 2 protruding parts [A] of the DADF separation pad and then remove the DADF separation pad cover [2]. Caution: Do not touch the pad surface [1].

  • Page 116: Before Removing The Sadf Unit And Reader Unit

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the SADF Unit and Reader Unit 4-53 Before Removing the SADF Unit and Reader Unit Caution: When assembling the DADF separation pad, set the separation pad spring [1] onto the 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) boss [2].
  • Page 117 Disassembly/Assembly > Document Exposure/Feeder System > Removing the SADF Unit and Reader Unit 4-54 4) Remove the SADF unit and reader unit [1]. Caution: • 2 claws [2] When mounting the SADF unit and reader unit, fix the 2 hinge arm claws [1] to the 2 latches [2] of the reader unit.

  • Page 118: Before Removing The Sadf Unit

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the SADF Unit 4-55 Before Removing the SADF Unit 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) 1-2) Remove the left cover. (Single-sided models) (Refer to page 4-32) 2) Remove the SADF unit and reader unit. (Refer to page 4-53) Removing the SADF Unit Caution: Place the detached SADF unit to avoid damaging the bottom sheet.
  • Page 119 Disassembly/Assembly > Document Exposure/Feeder System > Removing the SADF Unit 4-56 3) Unlock the reader lock [1] in the lower side of the reader unit and open the SADF unit [2]. Caution: When mounting the SADF unit to the reader unit, wind the SADF harness [2] and reader harness [3] around the inside of the 2 flat cables [1], and then mount the connector cover [4].

  • Page 120: Before Removing The Sadf Pickup Unit

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the SADF Pickup Unit 4-57 Before Removing the SADF Pickup Unit 3) Remove the SADF front cover [1]. • 2 claws [2] 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) •...
  • Page 121 Disassembly/Assembly > Document Exposure/Feeder System > Removing the SADF Pickup Unit 4-58 5) Remove the SADF upper cover [1]. • 3 bosses [2] • 2 shafts [3] F-4-119 4) Remove the SADF pickup tray [1]. • 2 shafts [2] F-4-121 F-4-120 4-58 Disassembly/Assembly >...

  • Page 122: Before Removing The Sadf Motor

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the SADF Motor 4-59 Before Removing the SADF Motor 6) Remove the SADF pickup unit [1]. • 3 screws [2] 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) • 1 harness guide [3] 1-2) Remove the left cover.

  • Page 123: Removing The Sadf Pickup Roller

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the SADF Pickup Roller 4-60 Removing the SADF Pickup Roller 2) Remove the SADF motor [1]. • 2 screws [2] • 2 harness bands [3] Caution: Do not touch the surface of the roller. 1) Open the SADF pickup tray [1] and SADF upper cover [2].
  • Page 124 Disassembly/Assembly > Document Exposure/Feeder System > Removing the SADF Pickup Roller 4-61 2) Lift the SADF unit and remove the SADF front cover [1]. 3) Remove the SADF upper cover [1]. • 2 claws [2] • 3 bosses [2] • 3 bosses [3] •...
  • Page 125 Disassembly/Assembly > Document Exposure/Feeder System > Removing the SADF Pickup Roller 4-62 4) Remove the gear [1]. 6) Lift the SADF pickup roller shaft [1] and remove the SADF pickup roller [2]. • 1 claw [2] F-4-131 F-4-129 Caution: 5) Remove the 2 e-rings [1] and the bushing [2], and then move the bushing [3]. Align the protruding part [A] of the bushing to the cut-out [B] of the shaft support to mount the bushing.

  • Page 126: Removing The Sadf Separation Pad

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the SADF Separation Pad 4-63 Removing the SADF Separation Pad 2) Remove the SADF separation pad [1]. Caution: Do not touch the pad surface [1]. When assembling/disassembling the SADF separation pad, take care not to lose the 2 springs [2] on the underside of the pad.

  • Page 127: Removing The Copyboard Cover

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the Copyboard Cover and Reader Unit 4-64 Removing the Copyboard Cover Before Removing the Copyboard Cover and Reader Unit 1) Remove the copyboard cover [1]. 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) 1-2) Remove the left cover.
  • Page 128 Disassembly/Assembly > Document Exposure/Feeder System > Removing the Copyboard Cover and Reader Unit 4-65 4) Remove the copyboard cover and reader unit [1]. Caution: • 2 claws [2] When mounting the reader unit and copyboard cover, fix the 2 hinge arm claws [1] to the 2 latches [2] of the reader unit.

  • Page 129: Before Removing The Copyboard Glass

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the Copyboard Glass Models with copyboard 4-66 Before Removing the Copyboard Glass 1) Press the unlock button [1] and open the reader unit [2]. Models with copyboard 1) Remove the copyboard cover. (Refer to page 4-64) 2) Remove the control panel unit.
  • Page 130 Disassembly/Assembly > Document Exposure/Feeder System > Removing the Copyboard Glass Models with copyboard 4-67 3) Remove the reader upper cover [1]. 4) Remove the copyboard glass [1]. • 2 screws [2] Caution: • 6 claws [3] When assembling/disassembling the copyboard glass, take care not to lose the 2 CIS Note: unit spacers [1].

  • Page 131: Before Removing The Copyboard Glass

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the Copyboard Glass Models with DADF/Models with SADF 4-68 Before Removing the Copyboard Glass 1) Remove the 2 screws [1]. Models with DADF/Models with SADF 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) 1-2) Remove the left cover.
  • Page 132 Disassembly/Assembly > Document Exposure/Feeder System > Removing the Copyboard Glass Models with DADF/Models with SADF 4-69 3) Remove the reader upper cover [1]. 4) Remove the copyboard glass [1]. • 2 screws [2] Caution: • 6 claws [3] When assembling/disassembling the copyboard glass, take care not to lose the 2 CIS Note: unit spacers [1].

  • Page 133: Before Removing The Flatbed Motor Unit

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the Flatbed Motor Unit 4-70 Before Removing the Flatbed Motor Unit Caution: 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) Grease is applide on the shaft [1] of the Contact Sensor, so be careful not to let the belt [2] come in contact with the shaft.
  • Page 134 Disassembly/Assembly > Document Exposure/Feeder System > Removing the Flatbed Motor Unit 4-71 3) Remove the guide cover [1]. 1) Move the CIS unit [1]. F-4-160 4) Disengage the harness [1] and the grounding wire [2] from the reader unit hole [A] and the F-4-158 2) Move the gear [1], and remove the belt [3] from the gear [2].

  • Page 135: Before Removing The Cis Unit

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the CIS Unit Models with copyboard 4-72 Before Removing the CIS Unit 5) Remove the flatbed motor unit [1]. • 2 screws [2] Models with copyboard 1) Remove the copyboard cover. (models with copyboard) (Refer to page 4-64) 2) Remove the control panel unit.
  • Page 136 Disassembly/Assembly > Document Exposure/Feeder System > Removing the CIS Unit Models with copyboard 4-73 1) Move the CIS unit [1]. 4) Remove the CIS unit [1]. • 2 shafts [2] F-4-165 2) Remove the 2 spacers [1], flat cable [2] and guide [3]. 3) Remove the CIS unit [4].

  • Page 137: Before Removing The Cis Unit

    Disassembly/Assembly > Document Exposure/Feeder System > Removing the CIS Unit Models with DADF/Models with SADF 4-74 Before Removing the CIS unit 1) Move the CIS unit [1]. Models with DADF/Models with SADF 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) 1-2) Remove the left cover.
  • Page 138 Disassembly/Assembly > Document Exposure/Feeder System > Removing the CIS Unit Models with DADF/Models with SADF 4-75 4) Remove the CIS unit [1]. • 2 shafts [2] F-4-172 Caution: When mounting the CIS unit, align the teeth of the belt [1] to the teeth at the bottom of the CIS unit [2] to mount the unit.

  • Page 139: Controller System

    Disassembly/Assembly > Controller System > Location of Duplex Models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-76 Controller System Name Service Parts No. Reference FM4-6961 MF4580dn (JP) FM4-6938 MF4580dn (LTN, SG, HK, AU) Location of Duplex Models FM4-6953 MF4580dn (KR) FM4-6957 MF4580dn (EUR) (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/ FM4-7518 MF4570dn (JP) FM4-6922 MF4570dn (US, CA, LTN) D550/D520)

  • Page 140: Location Of Single-Sided Models

    Disassembly/Assembly > Controller System > Location of Single-sided Models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-77 Location of Single-sided Models Name Service Parts No. Reference FM4-7057 MF4580dn (100V)/MF4570dn (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/ (100V)/MF4550d (100V) FM4-7058 MF4570dn (120V)/ MF4412) D550 (120V)/D520 (120V) Engine Controller PCB [10] p. 4-93, p. 4-96 FM4-7059 MF4580dn (230V)/MF4570dn (230V)/MF4550d (230V)/MF4553d...
  • Page 141 Disassembly/Assembly > Controller System > Location of Single-sided Models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-78 Name Service Parts No. Reference Name Service Parts No. Reference FM4-7520 MF4450 (JP) FAX model [12] Toner Sensor p. 4-110 FM4-6971 MF4450 (US, CA, LTN) MF4450/MF4452/MF4453 FM4-7523 MF4450 (TW) T-4-46 FM4-7499 MF4450 (LTN, SG, HK)

  • Page 142: Removing The Control Panel Unit

    Disassembly/Assembly > Controller System > Removing the Control Panel Unit Models without FAX (MF4430/MF4420n/MF4410/MF4412/D550/D520) 4-79 Removing the Control Panel Unit Removing the Control Panel Unit Models with FAX (MF4580dn/MF4570dn/MF4550d/ Models without FAX (MF4430/MF4420n/MF4410/ MF4553d/MF4554d/MF4450/MF4452/MF4453) MF4412/D550/D520) 1) Open the reader unit [1] and remove the 2 screws (black TP) [2]. 1) Open the reader unit [1] and remove the 2 screws (black TP) [2].

  • Page 143: Before Removing The Drive Belt

    Disassembly/Assembly > Controller System > Removing the Drive Belt Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-80 Before Removing the Drive Belt 3) Remove the tension unit [1]. • 1 screw [2] Single-sided models (MF4450/MF4452/MF4453/ MF4430/MF4420n/MF4410/MF4412) 1) Remove the right cover. (Single-sided models) (Refer to page 4-34) Removing the Drive Belt Single-sided models (MF4450/MF4452/MF4453/ MF4430/MF4420n/MF4410/MF4412)
  • Page 144 Disassembly/Assembly > Controller System > Removing the Drive Belt Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-81 4) Remove the shaft support [1] and then the drive cover [2]. 6) Remove the drive belt [1]. • 4 screws [3] Caution: Gently raise the drive cover [2] straight above to prevent the gear phase from becoming displaced.

  • Page 145: Before Removing The Drive Belt

    Disassembly/Assembly > Controller System > Removing the Drive Belt Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-82 Before Removing the Drive Belt Caution: Duplex models (MF4580dn/MF4570dn/MF4550d/ Assemble the drive gear in the order shown in the below picture. MF4553d/MF4554d/D550/D520) 1) Remove the right cover. (Duplex models) (Refer to page 4-33) Removing the Drive Belt Duplex models (MF4580dn/MF4570dn/MF4550d/ MF4553d/MF4554d/D550/D520)
  • Page 146 Disassembly/Assembly > Controller System > Removing the Drive Belt Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-83 3) Remove the tension unit [1]. 4) Remove the shaft support [1] and then the drive cover [2]. • 1 screw [2] • 5 screws [3] Caution: Gently raise the drive cover [2] straight above to prevent the gear phase from becoming displaced.
  • Page 147 Disassembly/Assembly > Controller System > Removing the Drive Belt Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-84 5) Remove the fixing transmission gear [1] and the cartridge transmission gear [2]. Caution: When assembling the drive gear, install the cartridge arm [1] according to the position shown in the left picture.

  • Page 148: Before Removing The Main Motor

    Disassembly/Assembly > Controller System > Removing the Main Motor Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-85 Before Removing the Main Motor Caution: Single-sided models (MF4450/MF4452/MF4453/ Align the drive cover [2] with the 14 shaft holes [1] to mount it. MF4430/MF4420n/MF4410/MF4412) 1) Remove the left cover. (Single-sided models) (Refer to page 4-32) 2-1) Remove the SADF unit and reader unit.
  • Page 149 Disassembly/Assembly > Controller System > Removing the Main Motor Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-86 2) Remove the motor driver PCB [1]. 5) Remove the tension unit [1]. • 2 connectors [2] • 1 screw [2] • 2 claws [3] F-4-199 6) Remove the main motor [1]. F-4-197 3) Disengage the motor harness [1] from the harness guide [A].
  • Page 150 Disassembly/Assembly > Controller System > Removing the Main Motor Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-87 Caution: Caution: When mounting the main motor, attach the harness [1] to the upper side of the motor . When mounting the scanner cover, pass the shutter open/close lever [1] through the hole [A] in the scanner cover.

  • Page 151: Before Removing The Main Motor

    Disassembly/Assembly > Controller System > Removing the Main Motor Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-88 Before Removing the Main Motor 2) Disengage the 2 harnesses [2] from the 5 connectors [1] and harness guide [A]. Duplex models (MF4580dn/MF4570dn/MF4550d/ MF4553d/MF4554d/D550/D520) 1) Remove the left cover. (Duplex models) (Refer to page 4-31) 2-1) Remove the DADF unit and reader unit.
  • Page 152 Disassembly/Assembly > Controller System > Removing the Main Motor Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-89 4) Remove the duplex relay PCB [1]. 7) Remove the tension unit [1]. • 1 claw [2] • 1 screw [2] • Harness guide [A] F-4-209 8) Remove the main motor [1]. F-4-207 •...
  • Page 153 Disassembly/Assembly > Controller System > Removing the Main Motor Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-90 Caution: Caution: When mounting the main motor, attach the harness [1] to the upper side of the motor . When mounting the scanner cover, pass the shutter open/close lever [1] through the hole [A] in the scanner cover.

  • Page 154: Before Removing The Main Fan

    Disassembly/Assembly > Controller System > Removing the Main Fan Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-91 Before Removing the Main Fan 2) Disengage the solenoid harness [1] from the guide [A]. • 1 connector [2] Duplex models (MF4580dn/MF4570dn/MF4550d/ MF4553d/MF4554d/D550/D520) 1) Remove the left cover. (Duplex models) (Refer to page 4-31) 2-1) Remove the DADF unit and reader unit.
  • Page 155 Disassembly/Assembly > Controller System > Removing the Main Fan Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-92 4) Remove the main fan [1]. Caution: • 1 guide [2] When mounting the scanner cover, pass the shutter open/close lever [1] through the • 2 claws [3] hole [A] in the scanner cover.

  • Page 156: Before Removing The Engine Controller Pcb

    Disassembly/Assembly > Controller System > Removing the Engine Controller PCB Models with FAX (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453) 4-93 Before Removing the Engine Controller PCB Removing the Engine Controller PCB Models with FAX (MF4580dn/MF4570dn/MF4550d/ Models with FAX (MF4580dn/MF4570dn/MF4550d/ MF4553d/MF4554d/MF4450/MF4452/MF4453) MF4553d/MF4554d/MF4450/MF4452/MF4453) 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) 1) Remove the harness guide [1].
  • Page 157 Disassembly/Assembly > Controller System > Removing the Engine Controller PCB Models with FAX (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453) 4-94 3) Remove the main controller mounting plate [1]. 6) Remove the 2 flat cables [1] and 7 connectors [2], and then disengage the harness from •...
  • Page 158 Disassembly/Assembly > Controller System > Removing the Engine Controller PCB Models with FAX (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453) 4-95 Caution: Caution: When reassembling, attach the engine controller PCB to the hook [1] and then mount Ensure that the terminal [1] is in contact with the contact spring [2]. the switchboard [3] to the lower side of the switch arm [2].

  • Page 159: Before Removing The Engine Controller Pcb

    Disassembly/Assembly > Controller System > Removing the Engine Controller PCB Models without FAX (MF4430/MF4420n/MF4410/MF4412/D550/D520) 4-96 Before Removing the Engine Controller PCB 1-1) Remove the main controller mounting plate [1]. • 3 screws (with washer) [2] Models without FAX (MF4430/MF4420n/MF4410/ • 2 screws (black TP) [3] MF4412/D550/D520) 1-1) Remove the left cover.
  • Page 160 Disassembly/Assembly > Controller System > Removing the Engine Controller PCB Models without FAX (MF4430/MF4420n/MF4410/MF4412/D550/D520) 4-97 2) Remove the terminal [1], and then disengage the harness [2] from the harness guide [A]. 5) Remove the engine controller PCB [1]. 3) Free the harness retaining spring [3] from the 2 hooks [B]. •...
  • Page 161 Disassembly/Assembly > Controller System > Removing the Engine Controller PCB Models without FAX (MF4430/MF4420n/MF4410/MF4412/D550/D520) 4-98 Caution: Caution: When reassembling, attach the engine controller PCB to the hook [1] and then mount Ensure that the terminal [1] is in contact with the contact spring [2]. the switchboard [3] to the lower side of the switch arm [2].

  • Page 162: Before Removing The Main Controller Pcb Models With Fax (Mf4580Dn/Mf4570Dn/Mf4550D/Mf4553D/Mf4554D/Mf4450/Mf4452/Mf4453)

    Disassembly/Assembly > Controller System > Removing the Main Controller PCB Models with FAX (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453) 4-99 Before Removing the Main Controller PCB Note: Models with FAX (MF4580dn/MF4570dn/MF4550d/ Refer to step 2-1) for the models with DADF. Refer to step 2-2) for the models with SADF. MF4553d/MF4554d/MF4450/MF4452/MF4453) 1-1) Remove the left cover.

  • Page 163: Models Without Fax Or Net (Mf4430/Mf4410/Mf4412/D550/D520)

    Disassembly/Assembly > Controller System > Removing the Main Controller PCB Models without FAX or NET (MF4430/MF4410/MF4412/D550/D520) 4-100 Before Removing the Main Controller PCB 3) Remove the main controller PCB [1]. • 1 screw (binding) [2] Models without FAX or NET (MF4430/MF4410/MF4412/ •...
  • Page 164 Disassembly/Assembly > Controller System > Removing the Main Controller PCB Models without FAX or NET (MF4430/MF4410/MF4412/D550/D520) 4-101 1-2) Remove the 3 flat cables [1] and 3 connectors [2]. 2) Remove the main controller PCB [1]. • 1 screw (binding) [2] •...

  • Page 165: Before Removing The Main Controller Pcb Model Without Fax, With Net (Mf4420N)

    Disassembly/Assembly > Controller System > Removing the FAX-NCU PCB Models with FAX (100V) 4-102 Before Removing the Main Controller PCB Before Removing the FAX-NCU PCB Model without FAX, with NET (MF4420n) Models with FAX (100V) 1) Remove the left cover. (Single-sided models) (Refer to page 4-32) 1-1) Remove the left cover.

  • Page 166: Before Removing The Fax-Ncu Pcb

    Disassembly/Assembly > Controller System > Removing the Pseudo CI PCB Models with FAX (100V) 4-103 Before Removing the FAX-NCU PCB Before Removing the Pseudo CI PCB Models with FAX (120V/230V) Models with FAX (100V) 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) 1-1) Remove the left cover.

  • Page 167: Before Removing The Paper Leading Edge Sensor

    Disassembly/Assembly > Controller System > Removing the Paper Leading Edge Sensor 4-104 Before Removing the Paper Leading Edge Sensor 1-1-1) Remove the harness guide [1]. • 1 screw (black TP) [2] 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) •...
  • Page 168 Disassembly/Assembly > Controller System > Removing the Paper Leading Edge Sensor 4-105 1-1-3) Remove the main controller mounting plate [1]. 1-3) Remove the main controller mounting plate [1]. • 4 screws (with washer) [2] • 3 screws (with washer) [2] •...
  • Page 169 Disassembly/Assembly > Controller System > Removing the Paper Leading Edge Sensor 4-106 4) Remove the 4 connectors [1]. Note: The below picture shows how to wind the harness. F-4-257 5) Disengage the harness [1] from the harness guide [A], and remove the paper leading edge F-4-259 sensor [2].

  • Page 170: Before Removing The Fixing Delivery/Paper Width Sensor Pcb

    Disassembly/Assembly > Controller System > Removing the Fixing Delivery/Paper Width Sensor PCB 4-107 Before Removing the Fixing Delivery/Paper Width 1-1-1) Remove the harness guide [1]. • 1 screw (black TP) [2] Sensor PCB • 1 wire saddle [3] 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) 1-2) Remove the left cover.
  • Page 171 Disassembly/Assembly > Controller System > Removing the Fixing Delivery/Paper Width Sensor PCB 4-108 1-1-3) Remove the main controller mounting plate [1]. 1-3) Remove the main controller mounting plate [1]. • 4 screws (with washer) [2] • 3 screws (with washer) [2] •...
  • Page 172 Disassembly/Assembly > Controller System > Removing the Fixing Delivery/Paper Width Sensor PCB 4-109 4) Remove the 4 connectors [1]. Note: The below picture shows how to wind the harness. F-4-267 5) Disengage the harness [1] from the harness guide [A], and remove the fixing delivery/ F-4-269 paper width sensor PCB [2].

  • Page 173: Before Removing The Toner Sensor And Multi Pickup Sensor Unit

    Disassembly/Assembly > Controller System > Removing the Toner Sensor and Multi Pickup Sensor Unit Models with FAX (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4 4-110 Before Removing the Toner Sensor and Multi Pickup Removing the Toner Sensor and Multi Pickup Sensor Sensor Unit Unit Models with FAX (MF4580dn/MF4570dn/MF4550d/ Models with FAX (MF4580dn/MF4570dn/MF4550d/ MF4553d/MF4554d/MF4450/MF4452/MF4453) MF4553d/MF4554d/MF4450/MF4452/MF4453)
  • Page 174 Disassembly/Assembly > Controller System > Removing the Toner Sensor and Multi Pickup Sensor Unit Models with FAX (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4 4-111 2) Remove the 2 connectors [1] and pass it inside through the hole [A] in the left panel. Caution: When mounting the scanner cover, pass the shutter open/close lever [1] through the hole [A] in the scanner cover.

  • Page 175: Before Removing The Multi Pickup Sensor Unit

    Disassembly/Assembly > Controller System > Removing the Multi Pickup Sensor Unit Models without FAX (MF4430/MF4420n/MF4410/MF4412/D550/D520) 4-112 Before Removing the Multi Pickup Sensor Unit Caution: Models without FAX (MF4430/MF4420n/MF4410/ When mounting the scanner cover, pass the shutter open/close lever [1] through the MF4412/D550/D520) hole [A] in the scanner cover.

  • Page 176: Before Removing The Speaker

    Disassembly/Assembly > Controller System > Removing the Speaker Models with FAX (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453) 4-113 Before Removing the Speaker 2) Remove the connector [1] and pass it inside through the hole [A] in the left panel. Models with FAX (MF4580dn/MF4570dn/MF4550d/ MF4553d/MF4554d/MF4450/MF4452/MF4453) 1-1) Remove the left cover. (Duplex models) (Refer to page 4-31) 1-2) Remove the left cover.
  • Page 177 Disassembly/Assembly > Controller System > Removing the Speaker Models with FAX (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453) 4-114 2) Pass the speaker harness [1] inside through the hole [A] in the left panel. 4) Remove the speaker [1]. • 1 screw (black TP) [2] F-4-282 3) Disengage the speaker harness [1] from the harness guide [A] and pass it out through the F-4-284 hole [B] in the right panel.

  • Page 178: Laser Exposure System

    Disassembly/Assembly > Laser Exposure System > Removing the Laser Scanner Unit Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-115 Laser Exposure System Before Removing the Laser Scanner Unit Duplex models (MF4580dn/MF4570dn/MF4550d/ Location MF4553d/MF4554d/D550/D520) 1) Remove the left cover. (Duplex models) (Refer to page 4-31) 2-1) Remove the DADF unit and reader unit.
  • Page 179 Disassembly/Assembly > Laser Exposure System > Removing the Laser Scanner Unit Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-116 2) Move the laser scanner unit [1]. Caution: • 4 screws [2] When mounting the scanner cover, pass the shutter open/close lever [1] through the hole [A] in the scanner cover.

  • Page 180: Before Removing The Laser Scanner Unit

    Disassembly/Assembly > Laser Exposure System > Removing the Laser Scanner Unit Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-117 Before Removing the Laser Scanner Unit 2) Move the laser scanner unit [1]. • 4 screws [2] Single-sided models (MF4450/MF4452/MF4453/ MF4430/MF4420n/MF4410/MF4412) 1) Remove the left cover. (Single-sided models) (Refer to page 4-32) 2-1) Remove the SADF unit and reader unit.
  • Page 181 Disassembly/Assembly > Laser Exposure System > Removing the Laser Scanner Unit Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-118 Caution: When mounting the scanner cover, pass the shutter open/close lever [1] through the hole [A] in the scanner cover. F-4-295 Ensure that the shutter open/close lever [1] can move vertically. F-4-296 4-118 Disassembly/Assembly >...

  • Page 182: Image Formation System

    Disassembly/Assembly > Image Formation System > Removing the Transfer Roller 4-119 Image Formation System Removing the Transfer Roller Location Caution: When assembling/disassembling the transfer roller, do not touch the surface of the roller. 1) Open the reader unit [1] and delivery tray [2]. 2) Remove the transfer roller bushing [3].
  • Page 183 Disassembly/Assembly > Image Formation System > Removing the Transfer Roller 4-120 3) Hold both shafts [1] of the transfer roller and remove the roller [2]. F-4-299 Caution: When reassembling, take care not to mistake the direction of the bushing [1]. F-4-300 4-120 Disassembly/Assembly >...

  • Page 184: Fixing System

    Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-121 Fixing System Before Removing the Fixing Assembly Duplex models (MF4580dn/MF4570dn/MF4550d/ Location MF4553d/MF4554d/D550/D520) 1) Remove the left cover. (Duplex models) (Refer to page 4-31) 2-1) Remove the DADF unit and reader unit. (models with DADF) (Refer to page 4-40) 2-2) Remove the SADF unit and reader unit.
  • Page 185 Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-122 1-1-1) Remove the harness guide [1]. 1-1-3) Remove the main controller mounting plate [1]. • 1 screw (black TP) [2] • 4 screws (with washer) [2] • 1 wire saddle [3] •...
  • Page 186 Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-123 2) Remove the terminal [1], and then disengage the harness [2] from the harness guide [A]. 5) Remove the 4 connectors [1]. 3) Free the harness retaining spring [3] from the 2 hooks [B]. 6) Disengage the harness [2] from the harness guide [A].
  • Page 187 Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-124 9) Remove the shaft support [1] of the delivery roller. 10) Remove the fixing assembly [1]. • 3 screws [2] F-4-311 Caution: When mounting the fixing harness, wrap the fixing harness [2] around the protruding part [1] of the harness holder, pass it through the harness guide [A], and then mount the connector [3].

  • Page 188: Before Removing The Fixing Assembly

    Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-125 Before Removing the Fixing Assembly Note: Single-sided models (MF4450/MF4452/MF4453/ The below picture shows how to wind the harness. MF4430/MF4420n/MF4410/MF4412) 1) Remove the left cover. (Single-sided models) (Refer to page 4-32) 2-1) Remove the SADF unit and reader unit.
  • Page 189 Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-126 1-1-1) Remove the harness guide [1]. 1-1-3) Remove the main controller mounting plate [1]. • 1 screw (black TP) [2] • 4 screws (with washer) [2] • 1 wire saddle [3] •...
  • Page 190 Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-127 1-3) Remove the main controller mounting plate [1]. 4) Remove the 2 left/right reinforcing plates [1]. • 3 screws (with washer) [2] • 4 screws (black TP) [2] •...
  • Page 191 Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-128 8) Remove the harness holder [1]. 10) Remove the fixing assembly [1]. • 1 claw [2] • 3 screws [2] F-4-323 9) Remove the shaft support [1] of the delivery roller. F-4-325 Caution: When mounting the fixing harness, wrap the fixing harness [2] around the protruding...
  • Page 192 Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-129 Note: The below picture shows how to wind the harness. F-4-327 Caution: Ensure that the terminal [1] is in contact with the contact spring [2]. F-4-328 4-129 Disassembly/Assembly >...
  • Page 193 Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-130 4-130 Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412)
  • Page 194 Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-131 4-131 Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412)
  • Page 195 Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-132 4-132 Disassembly/Assembly > Fixing System > Removing the Fixing Assembly Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412)

  • Page 196: Pickup And Feeding System

    Disassembly/Assembly > Pickup And Feeding System > Location of Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-133 Pickup And Feeding System Location of Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/ Location of Duplex models (MF4580dn/MF4570dn/ MF4412) MF4550d/MF4553d/MF4554d/D550/D520) F-4-330 Name Service Parts No. Reference F-4-329 Pickup Unit FM4-6926 p. 4-138 Name Service Parts No.

  • Page 197: Before Removing The Pickup Unit

    Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Unit Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-134 Before Removing the Pickup Unit 1-1-1) Remove the harness guide [1]. • 1 screw (black TP) [2] Duplex models (MF4580dn/MF4570dn/MF4550d/ • 1 wire saddle [3] MF4553d/MF4554d/D550/D520) 1) Remove the left cover.
  • Page 198 Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Unit Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-135 1-1-3) Remove the main controller mounting plate [1]. 2) Remove the terminal [1], and then disengage the harness [2] from the harness guide [A]. • 4 screws (with washer) [2] 3) Free the harness retaining spring [3] from the 2 hooks [B].
  • Page 199 Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Unit Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-136 5) Free the paper leading edge sensor harness [1] and pickup solenoid harness [2] from the 6) Remove the shaft retainer [1]. harness guide [A]. F-4-337 F-4-338 7) Face the front of the host machine downwards.
  • Page 200 Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Unit Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-137 8) Remove the 6 screws (TP) [1] and the screw (with washer) [2]. Caution: When mounting the pickup unit [1], ensure that the contact spring [2] is in contact with the area [A].

  • Page 201: Before Removing The Pickup Unit

    Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Unit Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-138 Before Removing the Pickup Unit Caution: Single-sided models (MF4450/MF4452/MF4453/ Ensure that the terminal [1] is in contact with the contact spring [2]. MF4430/MF4420n/MF4410/MF4412) 1) Remove the left cover. (Single-sided models) (Refer to page 4-32) 2-1) Remove the SADF unit and reader unit.
  • Page 202 Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Unit Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-139 1-1-1) Remove the harness guide [1]. 1-1-3) Remove the main controller mounting plate [1]. • 1 screw (black TP) [2] • 4 screws (with washer) [2] •...
  • Page 203 Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Unit Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-140 1-3) Remove the main controller mounting plate [1]. 4) Remove the 4 connectors [1]. • 3 screws (with washer) [2] • 2 screws (black TP) [3] F-4-351 5) Free the paper leading edge sensor harness [1] and pickup solenoid harness [2] from the harness guide [A].
  • Page 204 Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Unit Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-141 6) Remove the shaft retainer [1]. 8) Remove the 6 screws (TP) [1] and the screw (with washer) [2]. F-4-355 9) Remove the pickup unit [2] while holding down the pickup tray [1]. F-4-353 7) Face the front of the host machine downwards.
  • Page 205 Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Unit Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-142 Caution: Caution: When mounting the pickup unit [1], ensure that the contact spring [2] is in contact with Ensure that the terminal [1] is in contact with the contact spring [2]. the area [A].

  • Page 206: Before Removing The Pickup Tray Unit

    Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Tray Unit Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-143 Before Removing the Pickup Tray Unit Removing the Pickup Tray Unit Duplex models (MF4580dn/MF4570dn/MF4550d/ Duplex models (MF4580dn/MF4570dn/MF4550d/ MF4553d/MF4554d/D550/D520) MF4553d/MF4554d/D550/D520) 1) Remove the left cover. (Duplex models) (Refer to page 4-31) 1) Remove the 10 screws [1].
  • Page 207 Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Tray Unit Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-144 2) Remove the pickup tray unit [1]. • 2 boss holes [2] • 2 hooks [3] • 2 bosses [4] Caution: When assembling/disassembling the pickup tray unit, hold the pickup tray [5] down to attach/release it.

  • Page 208: Before Removing The Pickup Tray Unit

    Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Tray Unit Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-145 Before Removing the Pickup Tray Unit Caution: Single-sided models (MF4450/MF4452/MF4453/ Align the 2 boss holes [1], 2 hooks [2] and 2 bosses [3] of the pickup tray unit with the pickup unit to mount the unit.
  • Page 209 Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Tray Unit Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-146 2) Remove the pickup tray unit [1]. Caution: • 2 boss holes [2] Align the 2 boss holes [1], 2 hooks [2] and 2 bosses [3] of the pickup tray unit with the •...

  • Page 210: Removing The Pickup Roller

    Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Roller 4-147 Removing the Pickup Roller 1) Open the reader unit and copyboard cover [1] and delivery tray [2]. 2) Remove the pickup roller [3]. • 2 claws [4] Caution: When assembling/disassembling the pickup roller, do not touch the surface of the roller.

  • Page 211: Before Removing The Pickup Solenoid

    Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Solenoid Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-148 Before Removing the Pickup Solenoid 1-1-1) Remove the harness guide [1]. • 1 screw (black TP) [2] Duplex models (MF4580dn/MF4570dn/MF4550d/ • 1 wire saddle [3] MF4553d/MF4554d/D550/D520) 1) Remove the left cover.
  • Page 212 Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Solenoid Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-149 1-1-3) Remove the main controller mounting plate [1] 2) Remove the terminal [1], and then disengage the harness [2] from the harness guide [A]. • 4 screws (with washer) [2] 3) Free the harness retaining spring [3] from the 2 hooks [B].
  • Page 213 Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Solenoid Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-150 5) Free the pickup solenoid harness [1] from the harness guide [A]. Note: The below picture shows how to wind the harness. F-4-378 6) Remove the screw [1], move the solenoid arm [2] and remove the pickup solenoid [3]. F-4-380 Caution: Ensure that the terminal [1] is in contact with the contact spring [2].

  • Page 214: Before Removing The Pickup Solenoid

    Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Solenoid Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-151 Before Removing the Pickup Solenoid 1-1-1) Remove the harness guide [1]. • 1 screw (black TP) [2] Single-sided models(MF4450/MF4452/MF4453/ • 1 wire saddle [3] MF4430/MF4420n/MF4410/MF4412) 1) Remove the left cover.
  • Page 215 Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Solenoid Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-152 1-1-3) Remove the main controller mounting plate [1]. 1-3) Remove the main controller mounting plate [1]. • 4 screws (with washer) [2] • 3 screws (with washer) [2] •...
  • Page 216 Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Solenoid Single-sided models (MF4450/MF4452/MF4453/MF4430/MF4420n/MF4410/MF4412) 4-153 4) Remove the 4 connectors [1]. 6) Remove the screw [1], move the solenoid arm [2] and remove the pickup solenoid [3]. F-4-388 F-4-390 5) Free the pickup solenoid harness [1] from the harness guide [A]. Note: The below picture shows how to wind the harness.

  • Page 217: Removing The Separation Pad

    Disassembly/Assembly > Pickup And Feeding System > Removing the Separation Pad 4-154 Removing the Separation Pad Caution: Ensure that the terminal [1] is in contact with the contact spring [2]. Caution: When assembling/disassembling the separation pad, do not touch the surface of the pad.

  • Page 218: Before Removing The Duplex Feed Unit

    Disassembly/Assembly > Pickup And Feeding System > Removing the Duplex Feed Unit Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-155 Before Removing the Duplex Feed Unit 2) Remove the 2 screws (TP) [1] and 2 screws (tapping) [2] using a stubby screwdriver. Duplex models (MF4580dn/MF4570dn/MF4550d/ MF4553d/MF4554d/D550/D520) 1) Remove the left cover.

  • Page 219: Before Removing The Duplex Reverse Solenoid

    Disassembly/Assembly > Pickup And Feeding System > Removing the Duplex Reverse Solenoid Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-156 Before Removing the Duplex Reverse Solenoid 5) Remove the duplex feed unit [1]. • 1 claw [2] Duplex models (MF4580dn/MF4570dn/MF4550d/ • 2 hooks [3] MF4553d/MF4554d/D550/D520) 1) Remove the left cover.
  • Page 220 Disassembly/Assembly > Pickup And Feeding System > Removing the Duplex Reverse Solenoid Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-157 2) Disengage the solenoid harness [1] from the guide [A]. 4) Remove the duplex reverse solenoid [1]. • 1 connector [2] • 1 screw [2] F-4-401 F-4-399 3) Pass the solenoid harness [1] out through the hole [A] in the right panel.
  • Page 221 Disassembly/Assembly > Pickup And Feeding System > Removing the Duplex Reverse Solenoid Duplex models (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/D550/D520) 4-158 Caution: When mounting the scanner cover, pass the shutter open/close lever [1] through the hole [A] in the scanner cover. F-4-403 Ensure that the shutter open/close lever [1] can move vertically. F-4-404 4-158 Disassembly/Assembly >...

  • Page 222: Adjustment

    Adjustment ■ Mechanical Adjustment Adjustment...

  • Page 223: Confirming Nip Width

    Adjustment > Mechanical Adjustment > Confirming Nip Width Mechanical Adjustment Confirming Nip Width Caution : Be sure to follow the procedures below, otherwise the fixing film or the fixing sleeve Center may be damaged. Feed out direction A4-sized paper The nip width of the fixing unit is not adjustable in this printer, however, the incorrect nip width may cause the faulty fixing.

  • Page 224: Trouble Shooting

    Trouble Shooting ■ Test Print ■ Trouble Shooting Items ■ Version Upgrade Trouble Shooting...

  • Page 225: Trouble Shooting Test Print

    Trouble Shooting > Test Print > Test Print Function Test Print Test Print Function This equipment has a test print function to check if the printer engine normally operates. Test patterns (horizontal lines) are output when executing this test print. The following is the operation procedure;...

  • Page 226: Trouble Shooting Items

    Trouble Shooting > Trouble Shooting Items > Image Faults > Smudged/Streaked Trouble Shooting Items Image sample Image Faults ■ Smudged/Streaked ● Bleeding (smear) occurs immediately after the power is turned on for the first time for the day Description There is sometimes a case where the difference of temperature between air and inside of the machine causes moisture to occur on the toner immediately after the power is turned on for the first time for the day.

  • Page 227: Version Upgrade

    Trouble Shooting > Version Upgrade > Preparation > System Requirements Version Upgrade Preparation ■ System Requirements Overview • OS (one of the following) To upgrade versions, use the user support tool (hereinafter UST) and download firmware • Microsoft Windows 2000 Server/Professional from a personal computer (hereinafter PC) to this product.

  • Page 228: Preparation

    Trouble Shooting > Version Upgrade > Downloading System Software Downloading System Software ■ Preparation 1) Start the PC. 1) Open UST. 2) Connect the device to the PC with the USB cable. 3) Turn on the device on standby. 4) Press [Menu] key to upgrade firmware in User mode. System Settings >...
  • Page 229 Trouble Shooting > Version Upgrade > Downloading System Software 4) Select [USB Device] and click [Next] button. 6) Click [Yes] button for the warning message to start download. F-6-9 F-6-10 F-6-7 7) Click [OK] button when download is completed. 5) Click [Start] button. F-6-11 8) Turn off and on the power to restart the device.

  • Page 230: Error Codes

    Error Codes ■ Overview ■ Error Codes Error Codes...

  • Page 231: Error Codes Overview

    Error Codes > Overview Overview This section describes codes shown in case any problem is occurred. Since this product does not collect logs for jams and alarms, no jam / alarm code is shown. Code type Description Reference Error code Shown for any problem occurred in the device.

  • Page 232: Error Codes

    Error Codes > Error Codes Error Codes Code Detection description Remedy When the same error repeatedly occurs after several times of turning the power OFF/ON, execute the Code Detection description Remedy following remedies. When the same error repeatedly occurs after several (1) Check that the heater resistance measured between times of turning the power OFF/ON, execute the 1PIN and 2PIN of the cable (J101) on the Main...
  • Page 233 Error Codes > Error Codes Code Detection description Remedy Code Detection description Remedy When the same error repeatedly occurs after several When the same error repeatedly occurs after several times of turning the power OFF/ON, execute the times of turning the power OFF/ON, execute the Fan Motor cannot rotate at following remedies.

  • Page 234: Service Mode

    Service Mode ■ Overview ■ COPIER ■ FEEDER ■ FAX ■ TESTMODE Service Mode...

  • Page 235: Entering Service Mode

    Service Mode > Overview > Service Mode Menu > Screen flow of Service mode Overview ■ Screen flow of Service mode • Initial / Category / Sub category screen Entering Service Mode. Select the item : Up-arrow / down-arrow SERVICE MODE Contact the sales company for the method to enter service mode.

  • Page 236: Copier

    Service Mode > COPIER > I/O > R-CON COPIER ■ R-CON DISPLAY COPIER>I/O>R-CON Address Contents of display ■ VERSION P001 Sensor state display (DES) COPIER>DISPLAY>VERSION Sensor state display (DS) Sub item Description T-8-4 MAIN Display version/checksum/date of Bootable (Product program area) ECONT Display ROM version of recording engine T-8-2...

  • Page 237: Adjust

    Service Mode > COPIER > ADJUST > CCD ADJUST ■ CCD COPIER>ADJUST>CCD ■ ADJ-XY Common COPIER>ADJUST>ADJ-XY Sub item Description to all model Common models only Sub item Description to all model FBTAR-R Shading target value for RED in copyboard reading Setting range: 128 ~ 384 models only...

  • Page 238: Function

    Service Mode > COPIER > FUNCTION > PARAM FUNCTION ■ MISC-P ● OUTPUT ■ CLEAR When outputting the report, place paper in the Pickup Cassette, and remove paper from the COPIER>FUNCTION>CLEAR Multi-purpose Tray. Network Common If paper is placed in the Multi-purpose Tray, the report is not output even if paper is placed in model and Sub item Description...

  • Page 239: Splman

    Service Mode > COPIER > OPTION > BODY OPTION ■ SPLMAN COPIER>FUNCTION>SPLMAN ■ BODY Common Double sided Sub item Description to all printing COPIER>OPTION>BODY models model only Sub item Description TOP-MPT Adjustment of leading edge margin when feeding from LOCALE To set country group.

  • Page 240: Counter

    Service Mode > COPIER > COUNTER > JAM COUNTER ■ PICK-UP COPIER>COUNTER>PICK-UP ■ TOTAL Display/ Setting/ Adjustment rage: 0 ~ 999,999 Return to 0 when exceeding 999,999. Common to Double sided COPIER>COUNTER>TOTAL Sub item Description all models printing model only Display/ Setting/ Adjustment rage: 0 ~ 999,999 Return to 0 when exceeding 999,999.

  • Page 241: Adjust

    Service Mode > FEEDER > FUNCTION FEEDER ADJUST FEEDER>ADJUST Sub item Description ADF model only DOCST Adjustment of the page front reading position when using duplex ADF Setting range: -30 ~ 30 LA-SPD Adjustment of magnification ratio in vertical scanning direction in stream feeding Setting range: -200 ~ 200 T-8-18...

  • Page 242: Fax

    Service Mode > FAX > List of SSSW FAX>SSSW SSSW No. Bit No. Function SW 06 (Setting of reading criteria) List of SSSW Bit 0 Move from DES to pre-scan position Bit 1 Pre-scan at time other than power-ON • FAX model only Bit 2 Restrict document length Bit 3...

  • Page 243: List Of Menu

    T-8-21 Bit 5 New dial tone detection method SW 31 Not in use SW 32 Bit 0 Canon/NTT NSX switching SW Bit 5 0:NCU2004 1:NCU2002 SW 33-SW 50 Not in use T-8-20 8-10 Service Mode > FAX > List of Menu...

  • Page 244: List Of Num

    Service Mode > FAX > List of NCU > TONE/PULSE 8-11 List of NUM List of NCU • FAX model only • FAX model only ■ TONE/PULSE Numeric parameter setting mode Parameter Allowable setting range (1)Setting of Tone Parameters Not in use While “#NCU”...

  • Page 245: 2Nd Dial Tone

    Service Mode > FAX > List of NCU > BUSY TONE1 8-12 (2) Numeric value parameter ■ BUSY TONE0 Parameter No. Function Setting range (1) Bit switch T0 timer 0 to 9999 (x10ms) Bit No. Function T1 timer 0 to 9999 (x10ms) Bit 0 T2 timer 0 to 9999 (x10ms)

  • Page 246: Reorder Tone

    Service Mode > FAX > List of NCU > RKEY 8-13 (2) Numeric value parameter ■ AUTO RX Parameter No. Function Setting range (1) Numeric value parameter Parameter No. Function Setting range T1 timer 0 to 9999 (x10ms) CI ON time 0 to 9999 (x10ms) T2 timer 0 to 9999 (x10ms)

  • Page 247: Pbx Dial Tone

    Service Mode > FAX > List of NCU > PBX BUSY TONE 8-14 ■ PBX DIAL TONE (2) Numeric value parameter Parameter No. Function Setting range (1) Bit switch T0 timer 0 to 9999 (x10ms) Bit No. Function T1 timer 0 to 9999 (x10ms) Bit 0 Frequency detection method...

  • Page 248: Testmode

    Service Mode > TESTMODE > SCAN > SENSOR 8-15 TESTMODE SCAN ■ ADJUST SYSTEM ● ADF-ADJ ■ DRAM TESTMODE>SCAN>ADJUST>ADF-ADJ Sub item Description ADF model only TESTMODE>SYSTEM>DRAM DF-SPEED Enter the adjustment value for the magnification ratio in vertical Sub item Description scanning direction in stream feeding TEST1 Data read/write check for DRAM (except system work area)

  • Page 249: Adftest

    Service Mode > TESTMODE > FAX > MODEM 8-16 ■ ADFTEST TESTMODE>SCAN>ADFTEST ■ MODEM Single-sided Double-sided Sub item Description ADF model ADF model TESTMODE>FAX>MODEM SPEED For testing of ADF feeding speed. Execute Sub item Description FAX model only feeding test of ADF motor at specified speed. FREQ Transmit selected frequency in closed DC circuit using tone [Setting value]...

  • Page 250: Faculty

    Service Mode > TESTMODE > NETWORK > SSSW 8-17 NETWORK ● RELAY-1 TESTMODE>FAX>MODEM>RELAY-1 ■ SSSW Sub item Description FAX model only Test ON/OFF of port SW and relay on NCU NETWORK>SSSW Setting value: ON, OFF Sub item Description Test ON/OFF of port SW and relay on NCU Setting value: ON, OFF T-8-48 ■...

  • Page 251: Appendix

    Appendix ■ Service Tools ■ Solvent/Oil List ■ General Circuit Diagram ■ General Timing Chart...
  • Page 252 Appendix > Service Tools Service Tools The followings are the required tools to perform the service operation. Tool name Tool number Usage/remarks Tool case TKN-0001 Jumper wire TKN-0069 With clip Gap gauge CK-0057 0.02 to 0.03mm Spring scale CK-0058 To check cassette spring pressure Philips screwdriver CK-0101 M4, M5 Length: 363mm...
  • Page 253 Appendix > Solvent/Oil List Solvent/Oil List Name Usage Remarks Ethyl alcohol Cleaning • Local procurement e.g.) Metal parts • Keep fire away Grease Toner contamination Lubricant • Apply it on gears etc. • tool number: HY9-0007 • Apply it on shafts and shaft supports etc. (Dow Corning made Molykote EM-50L) T-9-2 Appendix >...
  • Page 254 General Circuit Diagram OPCNT CORE DUPLEX model only Main Fan Unit CORE 1 SADF FAX 100V model only Control Panel PCB TR_CABLE(100V) CORE 2 J403 TR_CABLE(120V) 5V DCDC Duplex Driver PCB DUPSOL +24V OPCNT_FFC J909 J908 FANLOCK TR_CABLE(230V) 3 4 5 J1101 Duplex Solenoid FANON...
  • Page 255 Appendix > General Timing Chart General Timing Chart Print on A4 plain paper (2 pages) (Unit: second) Power-on (Unit:Seconds) WAIT STBY INTR PRINT LSTR STBY Sequence Controls at 80 C Print temperature control Fixing heater Relay Waiting for Print command Print command Print command a print command...

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D500 seriesMf4400 series

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