Canon MF4100 Series Service Manual
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Canon MF4100 Series Service Manual

Mf4100 series
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Service Manual

MF4100 Series
Aug 21 2006

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  • Page 1: Service Manual

    Service Manual MF4100 Series Aug 21 2006...
  • Page 3 Canon will release technical information as the need arises. In the event of major changes in the contents of this manual over a long or short period, Canon will issue a new edition of this manual.
  • Page 4 Introduction Symbols Used This documentation uses the following symbols to indicate special information: Symbol Description Indicates an item of a non-specific nature, possibly classified as Note, Caution, or Warning. Indicates an item requiring care to avoid electric shocks. Indicates an item requiring care to avoid combustion (fire). Indicates an item prohibiting disassembly to avoid electric shocks or problems.
  • Page 5 Introduction The following rules apply throughout this Service Manual: 1. Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with refer- ence to the timing of operation. In the diagrams, represents the path of mechanical drive; where a signal name accompanies the symbol , the arrow indicates the direction of the electric signal.

  • Page 7: Table Of Contents

    Contents Contents Chapter 1 Introduction 1.1 Product Specifications ..........................1- 1 1.1.1 Names of Parts................................ 1- 1 1.1.1.1 External View ................................... 1- 1 1.1.1.2 Section View (Host Machine)..............................1- 2 1.1.1.3 Section View (ADF).................................. 1- 3 1.1.1.4 Control panel.................................... 1- 4 1.1.2 Safety ..................................
  • Page 8 Contents 4.2 Detection Jams............................4- 2 4.2.1 Jam Detection ................................4- 2 4.3 ADF ................................4- 3 4.3.1 Pick-up Roller................................4- 3 4.3.1.1 Removing the Pickup Roller..............................4- 3 4.3.2 ADF Motor................................4- 3 4.3.2.1 Preparation for Removing the ADF Motor..........................4- 3 4.3.2.2 Removing the ADF Motor ................................
  • Page 9 Contents 7.3.4.3 Residual Jam at Startup ................................7- 4 7.4 Duplex Unit ..............................7- 5 7.4.1 Overview.................................. 7- 5 7.5 Parts Replacement Procedure ........................7- 6 7.5.1 Main Motor................................7- 6 7.5.1.1 Preparation for Removing Main Motor ............................. 7- 6 7.5.1.2 Removing Main Motor................................7- 6 7.5.2 Separation Pad................................
  • Page 10 Contents 9.3.8.2 Removing the SCNT Board ..............................9- 4 9.3.9 DCNT Board ................................9- 4 9.3.9.1 Preparation for Removing the DCNT Board ..........................9- 4 9.3.9.2 Removing the DCNT Board ..............................9- 4 9.3.10 NCU Board................................9- 6 9.3.10.1 Preparation for Removing the NCU Board..........................9- 6 9.3.10.2 Removing the NCU Board..............................
  • Page 11 Contents 13.2.4.1 Function List..................................13- 5 13.2.4.2 Bit 1 Elaborated..................................13- 6 13.2.4.3 Bit 2 Elaborated..................................13- 6 13.2.5 SSSW-SW16 ............................... 13- 6 13.2.5.1 Function List..................................13- 6 13.2.5.2 Bit 3 Elaborated..................................13- 6 13.2.6 SSSW-SW21 ............................... 13- 6 13.2.6.1 Function List..................................13- 6 13.2.6.2 Bit 4 Elaborated..................................
  • Page 12 Contents...

  • Page 13: Chapter 1 Introduction

    Chapter 1 Introduction...
  • Page 15 Contents Contents 1.1 Product Specifications..............................1-1 1.1.1 Names of Parts ..................................... 1-1 1.1.1.1 External View........................................1-1 1.1.1.2 Section View (Host Machine) ..................................1-2 1.1.1.3 Section View (ADF) .......................................1-3 1.1.1.4 Control panel........................................1-4 1.1.2 Safety ......................................1-5 1.1.2.1 Safety of the Host Machine's Laser Mechanism .............................1-5 1.1.2.2 CDRH Regulations......................................1-5 1.1.2.3 Handling of the Laser Assembly..................................1-6 1.1.2.4 Safety of the Toner......................................1-6...

  • Page 17: Product Specifications

    Chapter 1 1.1 Product Specifications 1.1.1 Names of Parts 1.1.1.1 External View 0014-4834 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 Front View (Body) [10] [11] [12] [17] [15] [14] [13] [16] F-1-1 [1] ADF (Automatic Document Feeder): MF4150 only [10] Delivery auxiliary tray [2] Document guide: MF4150 only [11] Delivery stop...

  • Page 18: Section View (Host Machine)

    Chapter 1 Rear View (Body) F-1-2 T-1-1 [1] USB port [4] Phone line terminal: MF4140/MF4150 only [2] Rear cover [5] Phone teminal: MF4140/MF4150 only [3] Appliance inlet [6] Handset terminal: MF4140/MF4150 only 1.1.1.2 Section View (Host Machine) 0014-6841 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / [14] [13] [12]...

  • Page 19: Section View (Adf)

    Chapter 1 copyboard glass (scanning glass) separation pad delivery roller [10] cartridge fixing film unit [11] duplexing feeding roller laser scanner unit [12] transfer charging roller primary charging roller [13] photosensitive drum developing cylinder [14] fixing unit 1.1.1.3 Section View (ADF) 0014-6872 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / F-1-4...

  • Page 20: Control Panel

    Chapter 1 1.1.1.4 Control panel 0014-4964 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 MF4140/MF4150 [1] [2] [5] [6] [7] [8] [10] [11] [12] [23] [22] [21] [20] [19] [18] [17] [16] [15] [14] [13] F-1-5 T-1-2 [1] [System Monitor] key [13] [Stop/Reset] key [2] [View Settings] key [14] Error indicator...

  • Page 21: Safety

    These regulations apply to laser products produced on and after August 1st, 1976, and prohibit the sale of laser products without certification. The following labels certify compliance with the CDRH regulations, and must be attached to all laser products that are sold in the US. CANON 30-2, SHIMOMARUKO, 3-CHOME, OHTAKU, TOKYO, 146, JAPAN.

  • Page 22: Handling Of The Laser Assembly

    Chapter 1 1.1.2.3 Handling of the Laser Assembly 0014-4967 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / Invisible laser beam is radiated within the laser scanner unit. Laser beam radiation may pose damage to eyes. Be sure not to disassemble the laser scanner unit. The host machine's laser scanner unit cannot be adjusted in the field.

  • Page 23: Product Specifications

    Chapter 1 1.1.3 Product Specifications 1.1.3.1 Host Machine Specifications 0014-4655 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 Copyboard fixed type Body desktop (ADF standard type: MF4130/MF4150 only) Light source type Image reading method contact sensor scanning method Photosensitive medium OPC drum Reproduction method indirect static copying method...

  • Page 24: Adf Specifications

    Chapter 1 Multifeeder tray capacity 10 sheets (plain paper: 80 g/m2) 1 sheet (transparency, envelope) Delivery tray stack 100 sheets (plain paper: 80 g/m2) 50 sheets (thick paper: 91 to 105 g/m2) 30 sheets (thick paper: 106 to 128 g/m2) 10 sheets (label, transparency, envelope, postcard) Continuous reproduction 1 to 99 print (s)

  • Page 25: Function List

    Number of Destination: Maximum 123 (one-touch / speed dial: 107, ten key: 16) Dual access Reservation Capacity: Maximum 64 jobs Memory reception Approximately 256 sheets (Canon FAX standard chart No.1) Image data backup 1.1.4 Function List 1.1.4.1 Scanning Range (ADF) 0014-4816...

  • Page 26: Scanning Range (Copyboard)

    Chapter 1 T-1-5 item Letter Legal effective scanning width 206 +2.0/-2.0 mm 212 +2.0/-2.0 mm 212 +2.0/-2.0 mm left margin 2.0 +2.0/-2.0 mm 2.0 +2.0/-2.0 mm 2.0 +2.0/-2.0 mm right margin 2.0 +2.0/-2.0 mm 2.0 +2.0/-2.0 mm 2.0 +2.0/-2.0 mm leading edge margin 2.0 +2.0/-2.0 mm 2.0 +2.0/-2.0 mm...

  • Page 27: Recording Range (Reception)

    Chapter 1 T-1-7 item Letter Legal effective recording width 204 +1.0/-2.0 mm 210 +2.0/-2.0 mm 210 +2.0/-2.0 mm effective recording left 3.0 +2.0/-2.0 mm 3.0 +2.0/-2.0 mm 3.0 +2.0/-2.0 mm margin right margin 3.0 +2.0/-2.0 mm 3.0 +2.0/-2.0 mm 3.0 +2.0/-2.0 mm leading edge margin 4.0 +2.0/-2.0 mm 4.0 +2.0/-2.0 mm...

  • Page 28: Operation Environment Of The Printer Driver

    Chapter 1 [1] leading edge of document [6] trailing edge margin [2] left margin [7] non-scanning area [3] effective scanning width [8] scanning range [4] right margin [9] trailing edge of document [5] leading edge margin T-1-9 item Letter Legal left margin 5.0 +2.0/-2.0 mm 5.0 +2.0/-2.0 mm...

  • Page 29: Chapter 2 Basic Operation

    Chapter 2 Basic Operation...

  • Page 31: Basic Sequence

    Contents Contents 2.1 Construction ...................................2-1 2.1.1 Function Configuration ................................2-1 2.2 Basic Sequence ................................2-1 2.2.1 Basic Operation Sequence ................................2-1...

  • Page 33: Construction

    Chapter 2 2.1 Construction 2.1.1 Function Configuration 0014-4971 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / The functions of this host machine are mainly composed of the 7 blocks: System Control System, Scanning Control System, Printer Control System, Laser Scanner System, Image Formation System, Fixing System, Pickup/Feeding System. Below is the block diagram.

  • Page 35: Chapter 3 Original Exposure System

    Chapter 3 Original Exposure System...
  • Page 37 Contents Contents 3.1 Basic Constraction .................................3-1 3.1.1 Specifications / Control / Function List ............................3-1 3.1.2 Major Components..................................3-1 3.2 Parts Replacement Procedure............................3-2 3.2.1 Scanner Unit....................................3-2 3.2.1.1 Preparation for Removing the Control Panel Assembly ..........................3-2 3.2.1.2 Removing the Control Panel Assembly ................................3-2 3.2.2 Book Motor ....................................

  • Page 39: Basic Constraction

    Chapter 3 3.1 Basic Constraction 3.1.1 Specifications / Control / Function List 0014-5961 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / T-3-1 item function / method document exposure document scan Book mode: scan by the shift of the contact Book mode: scan by the shift of the contact sensor (CS) ADF: document stream reading by fixed contact sensor (CS) scanning resolution 600 dpi (horizontal scanner) X 600 dpi (vertical scanner)

  • Page 40: Parts Replacement Procedure

    Chapter 3 3.2 Parts Replacement Procedure 3.2.1 Scanner Unit 3.2.1.1 Preparation for Removing the Control Panel Assembly 0014-7669 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / 1) Remove the front cover. 2) Remove the right cover. 3) Remove the left cover. 4) Remove the rear cover.

  • Page 41: Contact Sensor

    Chapter 3 7) Unhook the 1 claw [1], and remove the gear [3] with the belt [2]. F-3-11 4) Remove the 2 spacers [1]. 5) Remove the contact sensor unit [2] upward. F-3-8 8) Remove the 3 screws [1] to remove the shaft retainer [2], the grounding plate [3] and the motor unit [4].
  • Page 42 Chapter 3 F-3-15...

  • Page 43: Chapter 4 Original Feeding System

    Chapter 4 Original Feeding System...
  • Page 45 Contents Contents 4.1 Basic Operation................................4-1 4.1.1 Basic Operation.................................... 4-1 4.1.2 Original Detection..................................4-2 4.2 Detection Jams ................................4-2 4.2.1 Jam Detection....................................4-2 4.3 ADF....................................4-3 4.3.1 Pick-up Roller ....................................4-3 4.3.1.1 Removing the Pickup Roller ...................................4-3 4.3.2 ADF Motor....................................4-3 4.3.2.1 Preparation for Removing the ADF Motor ..............................4-3 4.3.2.2 Removing the ADF Motor ....................................4-3 4.3.3 Separation Pad .....................................

  • Page 47: Basic Operation

    Chapter 4 4.1 Basic Operation 4.1.1 Basic Operation 0014-7869 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / The Auto Document Feeder (ADF) mounted onto this host machine is dedicated to stream-reading. 1 motor (DF motor: M3) is engaged in pickup/feeding/delivery. At the start of copy/fax/scan, the DF motor (M3) 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 48: Original Detection

    Chapter 4 4.1.2 Original Detection 0014-7870 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / There are two types of original detection in this equipment. PS106 PS105 J707 1 2 3 4 5 6 SCNT F-4-3 1. Original Presence / Absence Detection Detected by DS (Document Sensor: PS106) Setting the original onto the original tray pushes up the actuator, activating (light shielded =>light transmitted) the DS (PS106), and resulting in detection of the presence of original.

  • Page 49: Adf

    Chapter 4 4.3 ADF 4.3.1 Pick-up Roller 4.3.1.1 Removing the Pickup Roller 0014-5979 i-SENSYS MF4150 / i-SENSYS MF4140 / 1) Remove the shaft [1] with driver etc., and detach the ADF cover [2] in the direction of the arrow. F-4-7 4) Remove the 2 bushings [1].

  • Page 50: Separation Pad

    Chapter 4 F-4-14 F-4-10 6) Remove the ADF motor [3]. 2) Reverse the copyboard [1] and detach the bottom cover [4]. - 2 screws [1] - 2 screws [2] - 1 cable tube [2] - 5 claws [3] F-4-15 4.3.3 Separation Pad 4.3.3.1 Removing the Separation Pad F-4-11 0014-5943...
  • Page 51 Chapter 4 F-4-18...
  • Page 53 Chapter 5 Laser Exposure...
  • Page 55 Contents Contents 5.1 Overview/Configuration ..............................5-1 5.1.1 Overview...................................... 5-1 5.2 Controlling the Laser Activation Timing........................5-2 5.2.1 Laser ON / OFF Control ................................5-2 5.3 Controlling the Intensity of Laser Light ........................5-2 5.3.1 Auto Photoelectric Current Control (APC)..........................5-2 5.4 Controlling the Laser Scanner Motor..........................5-3 5.4.1 Overview......................................

  • Page 57: Error Code

    Chapter 5 5.1 Overview/Configuration 5.1.1 Overview 0014-4979 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / F-5-1 [1] Laser driver PCB [5] Scanner motor [2] BD sensor [6] Four-surface mirror [3] Photosensitive drum [7] Cylindrical lens [4] Condensing lens The laser scanner assembly is composed of the laser driver and the scanner motor etc., and controlled by the signal input from the DCNT board. The laser driver emits laser diode according to the laser control signal and the video signal from the DCNT board.

  • Page 58: Controlling The Laser Activation Timing

    Chapter 5 5.2 Controlling the Laser Activation Timing 5.2.1 Laser ON / OFF Control 0014-4983 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / This is the control where the laser driver turns on / off the laser diode (LD) based on the laser control signal sent from the DCNT board. The following is the circuit diagram for laser control.

  • Page 59: Controlling The Laser Scanner Motor

    Chapter 5 5.4 Controlling the Laser Scanner Motor 5.4.1 Overview 0014-4989 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / This is the control to rotate the scanner motor at constant speed. The scanner motor is the 3-phase DC brush-less motor with hall element included, and is combined with the drive circuit. The following chart shows the control circuit for the scanner motor.

  • Page 60: Parts Replacement Procedure

    Chapter 5 5.5 Parts Replacement Procedure 5.5.1 Laser/Scanner Unit 5.5.1.1 Preparation for Removing the Laser Scanner Unit 0014-5963 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / 1) Remove the front cover. 2) Remove the right cover. 3) Remove the left cover. 4) Remove the DCNT board.
  • Page 61 Chapter 6 Image Formation...

  • Page 63: Overview/Configuration

    Contents Contents 6.1 Overview/Configuration ..............................6-1 6.1.1 Configuration ....................................6-1 6.1.2 Print Process....................................6-1 6.2 Driving and Controlling the High-Voltage System .......................6-2 6.2.1 Generation of Transfer Charging Bias ............................6-2 6.3 Parts Replacement Procedure............................6-3 6.3.1 Transfer Charging Roller ................................6-3 6.3.1.1 Removing the Transfer Charging Roller.................................6-3...

  • Page 65: Overview/Configuration

    Chapter 6 6.1 Overview/Configuration 6.1.1 Configuration 0014-5000 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / The image forming system is the core part of this machine, and is composed of the cartridge, the transfer charging roller, the fixing assembly, etc. When receiving the print command from the SCNT board, the DCNT board activates the main motor to rotate the photosensitive drum, the developing cylinder, the primary charging roller, the transfer charging roller and the pressure roller.

  • Page 66: Driving And Controlling The High-Voltage System

    Chapter 6 Put the toner on the electrostatic latent image on the surface of the photosensitive drum to visualize Step 3: Development 3) Transfer block The toner image on the surface of the photosensitive drum is transferred to papers. Step 4: Transfer (Transfers the toner on the photosensitive drum to a paper) Step 5: Separation (Separates the paper from the photosensitive drum) 4) Fixing block The toner image is fixed on the paper.

  • Page 67: Parts Replacement Procedure

    Chapter 6 6.3 Parts Replacement Procedure 6.3.1 Transfer Charging Roller 6.3.1.1 Removing the Transfer Charging Roller 0014-5934 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / 1) Open the control panel assembly [1]. 2) Open the cartridge cover [2]. F-6-6 F-6-3 3) Unhook the 2 claws [1] to remove the transfer charging roller [2] with the transfer guide [3] in the direction of the arrow.
  • Page 69 Chapter 7 Pickup and Feed System...
  • Page 71 Contents Contents 7.1 Overview/Configuration ..............................7-1 7.1.1 Overview...................................... 7-1 7.2 Other Control .................................7-2 7.2.1 Overview...................................... 7-2 7.3 Detection Jams ................................7-3 7.3.1 Jam Detection Outline.................................. 7-3 7.3.1.1 Overview .........................................7-3 7.3.2 Delay Jams ....................................7-3 7.3.2.1 Pickup Delay Jam ......................................7-3 7.3.2.2 Delivery Delay Jam......................................7-3 7.3.3 Stationary Jams ....................................

  • Page 73: Overview/Configuration

    Chapter 7 7.1 Overview/Configuration 7.1.1 Overview 0014-5407 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / The pickup/feeding system is the part to pickup and feed a paper, and it is composed of the main motor, solenoid, and various motors. In this machine, a paper is picked up from either the pickup tray or the manual feed tray, and it is delivered from the delivery tray.

  • Page 74: Other Control

    Chapter 7 7.2 Other Control 7.2.1 Overview 0014-5413 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / Pickup/Feed Operation The pickup/feed assembly is the mechanism to pickup and feed paper one at a time from the pickup tray or the manual feed tray. The pickup/feed operation of the machine is explained below.

  • Page 75: Detection Jams

    Chapter 7 PS801: Leading edge sensor PS802: Paper width sensor PS803: Delivery sensor PS804: Delivery paper width sensor 7.3 Detection Jams 7.3.1 Jam Detection Outline 7.3.1.1 Overview 0014-5491 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / The machine has the following paper sensors to detect the presence/absence of paper at the time of startup, opening the door, or feeding a paper, as well as to detect whether a paper is fed normally.

  • Page 76: Residual Jam At Startup

    Chapter 7 7.3.4.3 Residual Jam at Startup 0014-5568 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / If either the leading edge sensor (PS801) or the paper width sensor (PS802) detects a paper at the start of initial rotation, CPU judges as the residual jam at startup. When there is paper in inside the machine, the leading edge sensor flag is pushed up with paper, and paper having is judged.

  • Page 77: Duplex Unit

    Chapter 7 7.4 Duplex Unit 7.4.1 Overview 0014-5569 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / The duplexing pick up operation of this machine is performed by the drive of the main motor (M1) under CPU control of the DCNT board. After the machine completes the 1st print and the paper's trailing edge passes over the delivery sensor (PS803), the duplexing drive solenoid (SL2) is turned on and the drive of the main motor (M1) is transmitted to the delivery roller and the duplexing feed roller.

  • Page 78: Parts Replacement Procedure

    Chapter 7 7.5 Parts Replacement Procedure 7.5.1 Main Motor 7.5.1.1 Preparation for Removing Main Motor 0014-5974 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / 1) Remove the front cover. 2) Remove the right cover. 3) Remove the left cover. 4) Remove the DCNT board.
  • Page 79 Chapter 8 Fixing System...
  • Page 81 Contents Contents 8.1 Overview/Configuration ..............................8-1 8.1.1 Specification/Control/Function List ............................8-1 8.1.2 Overview...................................... 8-1 8.2 Various Control Mechanisms............................8-3 8.2.1 Controlling the Temperature of the Fixing Unit .......................... 8-3 8.2.1.1 Fixing Temperature Control ...................................8-3 8.3 Protection Function ................................8-4 8.3.1 Protection Function ..................................8-4 8.4 Parts Replacement Procedure............................8-5 8.4.1 Fixing Unit ....................................

  • Page 83: Overview/Configuration

    Chapter 8 8.1 Overview/Configuration 8.1.1 Specification/Control/Function List 0014-5589 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / T-8-1 Item Function/Method Fixing method On-demand fixing Fixing heater Flat heater Fixing temperature detection Thermistor (TH1): temperature control, detection of abnormality Temperature fuse (TP1): detection of abnormality Fixing temperature control Temperature control at startup Temperature control at normal times...
  • Page 84 Chapter 8 F-8-2 [1] Pressure roller [2] Fixing film H1: Fixing heater TH1: Thermistor TP1: Temperature fuse...

  • Page 85: Various Control Mechanisms

    Chapter 8 8.2 Various Control Mechanisms 8.2.1 Controlling the Temperature of the Fixing Unit 8.2.1.1 Fixing Temperature Control 0014-5595 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / With this control, the surface temperature of the fixing heater is detected, and also the drive signal of the fixing heater is controlled to maintain the target temperature of the fixing heater.

  • Page 86: Protection Function

    Chapter 8 PS802 PS804 267.4 mm F-8-4 T-8-3 Paper length Paper width sensor Delivery paper width sensor Fixing mode No object *2 Detect Not detect Small size paper mode No object *2 Not detect Detect Small size paper mode *1: Eight modes, except envelop/small size paper *2: When setting papers at the end of the paper guide and passing them through the machine, it becomes the small size paper mode regardless of paper length.

  • Page 87: Parts Replacement Procedure

    Chapter 8 8.4 Parts Replacement Procedure 8.4.1 Fixing Unit 8.4.1.1 Preparation for Removing Fixing Assembly 0014-5966 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / 1) Remove the front cover. 2) Remove the right cover. 3) Remove the left cover. 4) Remove the rear cover.
  • Page 88 Chapter 8 F-8-11 3) Recline the 2 pressure release levers [1], and remove the 2 springs [2]. 4) Remove the fixing film unit [4]. - 2 pressure release levers [1] - 2 pressure plates [3] Do NOT touch the roller with bare hands. F-8-12...
  • Page 89 Chapter 9 External and Controls...
  • Page 91 Contents Contents 9.1 Control Panel..................................9-1 9.1.1 Outline......................................9-1 9.2 Power Supply .................................9-1 9.2.1 Protection Function ..................................9-1 9.2.1.1 Protecting Function ......................................9-1 9.3 Parts Replacement Procedure............................9-2 9.3.1 Front Cover ....................................9-2 9.3.1.1 Removing the Front Cover....................................9-2 9.3.2 Rear Cover ....................................9-2 9.3.2.1 Preparation for Removing the Rear Cover..............................9-2 9.3.2.2 Removing the Rear Cover ....................................9-2 9.3.3 Right Cover ....................................

  • Page 93: Control Panel

    Chapter 9 9.1 Control Panel 9.1.1 Outline 0014-7764 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / The machine's control panel consists of the following PCBs, and is controlled by the SCNT board. SCNT board Operation panel Key SW ASIC F-9-1 9.2 Power Supply 9.2.1 Protection Function...

  • Page 94: Front Cover

    Chapter 9 9.3 Parts Replacement Procedure 9.3.1 Front Cover 9.3.1.1 Removing the Front Cover 0014-6180 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / 1) Open the paper tray [1]. 2) Pull out the paper cover [2], and close the paper tray [1]. F-9-4 2) Remove the rear cover [3].

  • Page 95: Upper Cover

    Chapter 9 F-9-10 F-9-7 9.3.5 Upper Cover 9.3.5.1 Preparation for Removing the Upper Cover Once removing the damper, the control panel cannot be fixed. Take care not to catch your hands in the control panel since you have to perform operations 0014-6808 i-SENSYS MF4150 / i-SENSYS MF4140 / with the control panel opened afterwards.

  • Page 96: Operation Panel Unit

    Chapter 9 9.3.8 SCNT Board 9.3.8.1 Preparation for Removing the SCNT Board 0014-5944 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / 1) Remove the front cover. 2) Remove the right cover. 9.3.8.2 Removing the SCNT Board 0014-5945 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / 1) Remove the SCNT board [3].
  • Page 97 Chapter 9 F-9-18 3) Remove the 4 screws [1], and detach the scanner cover (front) [2] and the scanner cover (rear) [3]. F-9-21 7) Disconnect the connector [1], and free the flat cable [3] from the cable guide [2]. F-9-19 F-9-22 Points to Note When Attaching Make sure to insert the shutter arm [4] through the hole [5] of the scanner...

  • Page 98: Ncu Board

    Chapter 9 9.3.10 NCU Board 6) Remove the cartridge cover. 7) Remove the upper cover. 9.3.10.1 Preparation for Removing the NCU Board 9.3.12.2 Removing the High Voltage Power Supply Board 0014-5946 i-SENSYS MF4150 / i-SENSYS MF4140 0014-5949 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / 1) Remove the front cover.
  • Page 99 Chapter 10 Maintenance and Inspection...

  • Page 101: Periodically Replaced Parts

    Contents Contents 10.1 Periodically Replaced Parts ............................10-1 10.1.1 Periodically Replaced Parts ..............................10-1 10.2 Consumables ................................10-1 10.2.1 Consumable....................................10-1 10.3 Periodical Service ..............................10-1 10.3.1 Periodically Service Items ............................... 10-1 10.4 Cleaning ..................................10-1 10.4.1 Cleaning Items ..................................10-1 10.4.2 Cleaning Method (External Covers) ............................10-1 10.4.3 Cleaning Method (Reader Unit)...............................

  • Page 103: Periodically Replaced Parts

    Chapter 10 10.1 Periodically Replaced Parts 10.1.1 Periodically Replaced Parts 0014-5758 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / There are no periodically replaced parts with this machine. 10.2 Consumables 10.2.1 Consumable 0014-5761 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 T-10-1 Charge Consumable...

  • Page 104: Cleaning Method (Reader Unit)

    Chapter 10 10.4.3 Cleaning Method (Reader Unit) 0014-5767 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / F-10-1 [1] Document pickup roller Open the ADF and wipe off the smudge with the soft dry cloth. [2] Document feed roller Open the ADF and wipe off the smudge with the soft dry cloth. [3] Scraper Open the ADF and wipe off the smudge with the soft dry cloth.
  • Page 105 Chapter 11 Measurement and Adjustments...

  • Page 107: Basic Adjustments

    Contents Contents 11.1 Basic Adjustments..............................11-1 11.1.1 Adjustment Items ..................................11-1 11.1.2 Paper Margin Adjustment ................................ 11-1 11.1.3 Reading Adjustment................................. 11-1 11.1.4 Print Adjustment ..................................11-2...

  • Page 109: Basic Adjustments

    Chapter 11 11.1 Basic Adjustments Setting value Contents 11.1.1 Adjustment Items -2 (-0.2 mm) 0014-5769 -1 (-0.1 mm) i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / There are no adjustment items with this machine. +1 (+0.1 mm) +2 (+0.2 mm) 11.1.2 Paper Margin Adjustment 0014-5771 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 /...

  • Page 110: Print Adjustment

    Chapter 11 ADF SCAN L/R ADF COPY L/R ADF FAX L/R Item of setting range to enable adjusting right/left margins at Book reading (0 to 4mm) 11.1.4 Print Adjustment 0014-5793 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / After pressing the 'Additional Functions' button and '#' button, select 'AD- JUST', and then, press 'OK' button.
  • Page 111 Chapter 12 Error Code...

  • Page 113: Error Code Outline

    Contents Contents 12.1 Error Code..................................12-1 12.1.1 Error Code Outline................................... 12-1 12.1.2 Error Code....................................12-1...
  • Page 115 Chapter 12 12.1 Error Code 12.1.1 Error Code Outline 0014-7142 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / An error code is used to indicate a fault in a machine, and is indicated in the machine's LCD, showing the nature (symptoms) of the fault. Using the error code, the service man can readily find out how to correct the fault by simply referring to the service manual.
  • Page 116 Chapter 12 Error Code Description 0041 Can't receive carrier within 6 sec. after sending PPR. 0042 Can't receive correct signal after sending RNR signal 0043 Receive incorrect signal at phase D in ECM mode. 0044 Can't receive carrier/FSK signal within 6 sec. After sending MCF. ln ECM mode. 0047 Can't receive correct signal or DCN received after sending ERR signal.
  • Page 117 Chapter 12 Error Code Description 00B8 Remote side disconnect after our side sending DCS signal in V.34. 00BA Cannot received correct signal after our side sending DTC signal in V.34. 00BB Every time our side received DIS signal after sending DTC in V.34. 00BC Modem can't ready within 10 second after entering primary channel in V.34.
  • Page 119 Chapter 13 Service Mode...
  • Page 121 Contents Contents 13.1 Outline..................................13-1 13.1.1 Setting Service Data ................................13-1 13.1.2 How to Activate Service Mode..............................13-1 13.1.3 Service Data Menu................................... 13-2 13.2 Service Soft Switch Settings (SSSW) ........................13-4 13.2.1 Outline...................................... 13-4 13.2.1.1 SOFT SWITCH Explained ..................................13-4 13.2.2 SSSW-SW02:................................... 13-5 13.2.2.1 Function List ......................................13-5 13.2.2.2 Bit 2 and 3 Elaborated....................................13-5 13.2.2.3 Bit 5 Elaborated......................................13-5...

  • Page 123: Setting Service Data

    Chapter 13 13.1 Outline 13.1.1 Setting Service Data 0014-5799 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / Service Mode contains the following service data items. Each service data can be viewed or modified using the menu items displayed on the screen. SERVICE'S CHOICE Contains items such as service data, formatting to the user data, data transmission / reception speed setting etc.

  • Page 124: Service Data Menu

    Chapter 13 13.1.3 Service Data Menu 0014-5820 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / Service menu HUNGARY SERVICE CHOISE COUNTRY/REGION CODE SOUTH AFRICA SWEDEN KOREA SWITZERLAND CHINA AUSTRIA GERMAN DENMARK FRANCE NORWAY SINGAPORE HOLLAND CZECH BELGIUM SLOVENIA AUSTRALIA CANADA FINLAND RUSSIA...
  • Page 125 Chapter 13 ADJUST CIS ADJUST SHIPPING POS. HOME POS. SHEET POS. READING ADJUST BOOK MAIN REGIST BOOK SUB REGIST ADF MAIN REGIST ADF SUB REGIST-DES ADF SUB REGIST-COPY ADF SUB REGIST-SFINE ADF SUB REGIST-FINE ADF SUB REGIST-STD ADF SUB ZOOM-COPY ADF SUB ZOOM-SFINE ADF SUB ZOOM-FINE ADF SUB ZOOM-STD...

  • Page 126: Outline

    Chapter 13 REPORT SERVICE DATA LIST CLEAR DATA DRAM CLEAR MEMORY CLEAR PRINT COUNTER SCAN COUNTER FUNCTION PRINT TEST PATTERN CONT. PRINTING BLACK H/W TEST SIGNAL TEST WHITE RELAY TEST SQUARE SENSOR TEST DIAL TEST VOLUME TEST KEY TEST AGING CIS TEST BOOK SCAN TEST COPY TEST...

  • Page 127: Sssw-Sw02:

    Chapter 13 13.2.2 SSSW-SW02: 13.2.2.1 Function List 0014-6096 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / T-13-1 Function Not in Use RTN Transmission Condition RTN Transmission Condition Not in Use Change the Message Language Displayed Not displayed Not in Use Not in Use Not in Use 13.2.2.2 Bit 2 and 3 Elaborated...

  • Page 128: Bit 1 Elaborated

    Chapter 13 13.2.4.2 Bit 1 Elaborated 0014-6099 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / An alarm goes off when the transmission has been terminated due to some error. Change the setting to OFF in order to make this alarm inactive. 13.2.4.3 Bit 2 Elaborated 0014-6100 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 /...

  • Page 129: Bit 7 And 8 Elaborated

    Chapter 13 13.2.7.2 Bit 7 and 8 Elaborated 0014-6256 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / Enables to set the duration of pause. It is a combination of Bit 7 and Bit 8 and the duration is as listed below. T-13-8 (Bit7, Bit8)= (0, 0) 2.0 seconds...

  • Page 130: Bit 8 Elaborated

    Chapter 13 13.2.9.3 Bit 8 Elaborated 0014-6263 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / Enables to choose whether or not to carry out V.8 procedure during outgoing calls. Change the setting to 'No' and V.8 procedure will not be carried out even if V.8 procedur has been received from the caller and T.30 procedure will be initiated. 13.2.10 SSSW-SW51 13.2.10.1 Function List 0014-6264...

  • Page 131: Service Data List

    Chapter 13 13.3 Report Output (REPORT) 13.3.1 Service data list 0014-7742 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / SERVICE DATA LIST N A M E : V E G A T E L : 1 2 3 4 5 6 7 D A T E : 0 4 / 0 5 / 2 0 0 5 1 1 : 5 5 C O U N T R Y / R E G I O N C O D E = O T H E R S S O F T S W I T C H...

  • Page 132: Faculty Test

    Chapter 13 13.4.2 Faculty Test 13.4.2.1 Print test pattern 0014-7745 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / From the FUNCTION menu, select PRINT TEST PATTERN. In this test, the printer unit will be used to print various patterns. For service work, be sure to use the BLACK pattern and the SQUARE pattern. Use the BLACK print pattern to meke sure that the printout is free of white lines and unevenness;...

  • Page 133: Service Tools

    Chapter 14 Service Tools...

  • Page 135: Solvents / Lubricants Table

    Contents Contents 14.1 Service Tools................................14-1 14.1.1 Solvents / Lubricants Table ..............................14-1...

  • Page 137: Service Tools

    Chapter 14 14.1 Service Tools 14.1.1 Solvents / Lubricants Table 0014-5798 i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 / T-14-1 Name Purpose of Use Component Remarks Alcohol Cleaning Alcohols - Do not put close to fire. E.g.) Plastics - Source locally Rubber Metals Grease Buildup...
  • Page 139 Aug 21 2006...

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