Canon Color imageCLASS MF9170c Service Manual

Canon Color imageCLASS MF9170c Service Manual

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SERVICE
MANUAL
COPYRIGHT ©2008 CANON INC.
Color imageCLASS
MF9170c
MF9150c
MF8450c
OCTOBER 2008
REV. 0
CANON Color imageCLASS MF9170/9150c/8450c REV. 0 PRINTED IN U.S.A.

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  Summary of Contents for Canon Color imageCLASS MF9170c

  • Page 1 Color imageCLASS MF9170c MF9150c MF8450c SERVICE MANUAL OCTOBER 2008 REV. 0 COPYRIGHT ©2008 CANON INC. CANON Color imageCLASS MF9170/9150c/8450c REV. 0 PRINTED IN U.S.A.
  • Page 2 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 3 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 4 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 5: Table Of Contents

    Contents Contents Chapter 1 Introduction 1.1 System Construction ............................1- 1 1.1.1 System Configuration of Pickup/Delivery Options................1- 1 1.2 Product Specifications ........................... 1- 2 1.2.1 Names of Parts ............................1- 2 1.2.1.1 External View............................. 1- 2 1.2.1.2 Cross Section ............................ 1- 3 1.2.2 Using the Machine ...........................
  • Page 6 Contents Chapter 2 Basic Operation 2.1 Construction..............................2- 1 2.1.1 Functional Configuration......................... 2- 1 2.1.2 Connecting the Main PCBs ........................2- 2 2.2 Basic Sequence .............................. 2- 3 2.2.1 Basic Sequence of Operation ........................ 2- 3 2.2.2 Power-On Sequence ..........................2- 4 Chapter 3 Main Controller 3.1 Overview/Configuration ..........................
  • Page 7 Contents 4.3.3.1 Overview .............................4- 6 4.3.4 Dirt Sensor Control ...........................4- 7 4.3.4.1 Overview .............................4- 7 4.3.4.2 Stream Reading Position Shift ......................4- 7 4.4 Parts Replacement Procedure ........................4- 8 4.4.1 ADF Unit + Reader Unit ...........................4- 8 4.4.1.1 Before Removing the ADF Unit + Reader Unit ................4- 8 4.4.1.2 Removing the ADF Unit + Reader Unit..................4- 8 4.4.1.3 Procedure after Replacing the ADF Unit ..................4- 10 4.4.1.4 Procedure after Replacing the Reader Unit ................4- 10...
  • Page 8 Contents 6.2.2 Laser Light Emission Control......................... 6- 4 6.2.3 Laser Light Intensity Control ........................6- 4 6.2.4 Image Masking Control........................... 6- 4 6.2.5 Failure Detection............................6- 4 6.3 Controlling the Laser Scanner Motor......................6- 5 6.3.1 Overview ..............................6- 5 6.3.2 Failure Detection............................
  • Page 9 Contents 7.5.3.1 Before Removing the Developing Disengage Solenoid ............7- 30 7.5.3.2 Removing the Developing Disengage Solenoid .................7- 30 7.5.3.3 Points to Note When Installing the Developing Disengage Solenoid ........7- 31 7.5.4 ETB Unit ..............................7- 31 7.5.4.1 Removing the ETB Unit ........................7- 31 7.5.5 ETB Motor ..............................7- 32 7.5.5.1 Before Removing the ETB Motor ....................7- 32 7.5.5.2 Removing the ETB Motor.......................7- 32...
  • Page 10 Contents 8.4.3 Duplexing Pickup Operation ........................ 8- 19 8.5 Parts Replacement Procedure ........................8- 20 8.5.1 Pickup Feed Unit ............................ 8- 20 8.5.1.1 Before Removing the Pickup Feed Unit ..................8- 20 8.5.1.2 Removing the Pickup Feed Unit....................8- 20 8.5.2 Cassette Pickup Roller ..........................
  • Page 11 Contents 9.3.1 Overview ..............................9- 5 9.3.2 Failure Detection ............................9- 5 9.4 Parts Replacement Procedure ........................9- 6 9.4.1 Fixing Unit ..............................9- 6 9.4.1.1 Removing the Fixing Assembly.......................9- 6 9.4.2 Fixing Sleeve Unit .............................9- 6 9.4.2.1 Before Removing the Fixing Sleeve Unit..................9- 6 9.4.2.2 Removing the Fixing Sleeve Unit....................9- 6 9.4.3 Fixing Drive Unit ............................9- 9 9.4.3.1 Before Removing the Fixing Drive Unit..................9- 9...
  • Page 12 Contents 10.5.4.1 Before Removing the Right Cover ................... 10- 11 10.5.4.2 Removing the Right Cover ......................10- 11 10.5.5 Left Cover ............................10- 13 10.5.5.1 Before Removing the Left Cover ....................10- 13 10.5.5.2 Removing the Left Cover......................10- 13 10.5.6 Delivery Tray Cover ...........................
  • Page 13 Contents 10.5.20.1 Before Removing the Duplex Fan...................10- 26 10.5.20.2 Removing the Duplex Fan .......................10- 26 Chapter 11 Maintenance and Inspection 11.1 Periodically Replaced Parts........................11- 1 11.1.1 Periodically Replaced Parts........................11- 1 11.2 Consumables ...............................11- 1 11.2.1 Expected Service Life of Consumable Parts..................11- 1 11.3 Periodical Service............................11- 1 11.3.1 Periodic Service............................11- 1 Chapter 12 Measurement and Adjustments...
  • Page 14 Contents Chapter 14 Error Code 14.1 Error Code Table ............................14- 1 14.1.1 Error Code Table ..........................14- 1 14.2 Error Code Details ............................14- 2 14.2.1 Error Code Details ..........................14- 2 14.3 Jam Code..............................14- 8 14.3.1 Jam Code (main body)........................14- 8 14.3.2 Jam Code (ADF) ..........................
  • Page 15 Contents 16.2.5.1 OPTION List ..........................16- 16 16.2.6 COUNTER ............................16- 26 16.2.6.1 COUNTER List..........................16- 26 16.3 FEEDER ..............................16- 28 16.3.1 ADJUST..............................16- 28 16.3.1.1 ADJUST List..........................16- 28 16.3.2 FUNCTION............................16- 28 16.3.2.1 FUNCTION List..........................16- 28 16.4 FAX................................16- 28 16.4.1 SSSW ..............................16- 28 16.4.1.1 SSSW List.............................16- 28 16.4.2 MENU ..............................16- 30 16.4.2.1 MENU List.............................16- 30 16.4.3 NUM ..............................16- 30...
  • Page 16: Chapter 1 Introduction

    Chapter 1 Introduction...
  • Page 17 Contents Contents 1.1 System Construction..............................1-1 1.1.1 System Configuration of Pickup/Delivery Options ........................1-1 1.2 Product Specifications ..............................1-2 1.2.1 Names of Parts ..................................... 1-2 1.2.1.1 External View .........................................1-2 1.2.1.2 Cross Section ........................................1-3 1.2.2 Using the Machine ..................................1-4 1.2.2.1 Turning on the Power Switch..................................1-4 1.2.2.2 Control Panel ........................................1-5 1.2.2.3 Control Panel ........................................1-6 1.2.3 User Mode Items ..................................
  • Page 18: System Construction

    Chapter 1 1.1 System Construction 1.1.1 System Configuration of Pickup/Delivery Options 0020-7747 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c F-1-1 Cassette Feeding Unit-AB1/ AC1 * *: The following are the host machines that correspond to Cassette Feeding Unit-AB1/AC1. T-1-1 Japan North Europe...
  • Page 19: Product Specifications

    Chapter 1 1.2 Product Specifications 1.2.1 Names of Parts 1.2.1.1 External View 0020-3647 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c <Front> [10] [11] [12] [13] [14] [15] [16] [17] [18] F-1-2 Feeder ADF Tray Control Panel Cassette 1 Manual feed tray Front Cover Delivery tray Reader Unit...
  • Page 20: Cross Section

    Chapter 1 1.2.1.2 Cross Section 0019-4885 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c <ADF / Reader> F-1-4 ADF unit ADF pickup roller ADF delivery roller Reader unit Platen glass CCD unit <Main Body> [14] [13] [12] [11] [10] F-1-5 Reverse unit Delivery unit Delivery roller...
  • Page 21: Using The Machine

    Chapter 1 1.2.2 Using the Machine 1.2.2.1 Turning on the Power Switch 0019-4889 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The machine is equipped with the "main power switch" and "control panel power switch". - Main power switch: Used to turns OFF/ON the machine. - Control panel power switch: Used to enter the power save mode/low power mode/sleep mode.
  • Page 22: Control Panel

    Chapter 1 1.2.2.2 Control Panel 0019-7314 imageCLASS MF9170c / imageCLASS MF9150c [1] [2] [3] [24] [23] [22] [21] [20] [19] [18] [17] [16] [15] [14] [13] [12] [11] [10] F-1-7 Custom key 2 Custom key 1 Main Menu key Display Numeric keys Power switch (sub power supply) USB slot...
  • Page 23 Chapter 1 1.2.2.3 Control Panel 0019-4892 imageCLASS MF8450c [1] [2] [3] [22] [21] [20] [19] [18] [17] [16] [15] [14] [13] [12] [11] [10] F-1-8 Custom key 2 Custom key 1 Main Menu key Display Numeric keys Power switch (sub power supply) USB slot Volume control dial Clear key...
  • Page 24: User Mode Items

    Chapter 1 1.2.3 User Mode Items 1.2.3.1 Overview 0020-0865 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The following are the user mode setting items. MEMO: - Drawer 2 is an option cassette. - Some setting items are displayed by pressing the left/right Any key. Perform operations by referring to the functions of the left/right Any key displayed at the bottom of the screen.
  • Page 25: Common Settings

    Chapter 1 1.2.3.4 Common Settings 0020-9559 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c *: default settings *1: Only when the Cassette Feeding Unit-AB1/AC1 is attached. *4: Only when the appropriate optional equipment is attached. T-1-4 Common Settings Item Settings Initial Function Settings Select Initial Function Main Menu *, Copy, Scan to Send, Scan to Store, Direct Print...
  • Page 26: Communications Settings *3

    Chapter 1 1.2.3.5 Communications Settings *3 0020-9560 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Common Settings *: default settings **: China only *3: Only when the Super G3 FAX Board is attached. *4: Only when the appropriate optional equipment is attached. T-1-5 Communications Settings*3 >...
  • Page 27 Chapter 1 Fax Settings *: default settings *2: MF8450/ MF8450C for Japan only *3: Only when the Super G3 FAX Board is attached. *4: only for Japan, China, KR *5: except AUS *6: except Singapore *7: only U.S.A. *8: only for AUS *9: The maximum differs depending on the destination.
  • Page 28: Address Book Settings

    Chapter 1 1.2.3.6 Address Book Settings 0020-9561 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c *: default settings *4: Only when the appropriate optional equipment is attached. T-1-7 Address Book Settings Item Settings Register Address *4 Register New Register Name Max 16 characters Destination Registration Max.
  • Page 29 Chapter 1 T-1-8 Address Book Settings Item Settings Register One-touch *4 (Select the number of available one-touch dial.) Register Name Max. 16 characters Register One-Touch Name Max. 12 characters Destination Registration Max. 120 characters ECM TX OFF/ON* Sending Speed 33600bps *, 14400bps, 9600bps, 4800bps Long Distance Domestic *, Long Distance (1), Long Distance (2), Long Distance (3) E-Mail...
  • Page 30: Printer Settings

    Chapter 1 1.2.3.7 Printer Settings 0020-9811 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c *: default settings *2: Only when the PCL Printer Kit is attached. *3: Only when the Barcode Printing Kit is attached. T-1-9 Printer Settings Item Settings Number of Copies 1 to 999 Copies 1* 2-Sided...
  • Page 31 Chapter 1 T-1-10 Printer Settings Item Settings PCL Settings*2 Paper Save OFF* / ON Orientation Portrait *, Landscape Font Number (0 to 91) 0* 4.00 to 999.75 point Width 0.25 point (12*) Character Size point (4.00 to 999.75) 12.00* Width 0.25point No.
  • Page 32: Timer Settings

    Chapter 1 1.2.3.8 Timer Settings 0019-4902 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c ***: For all excluding Japan, Asia The following are the items for timer settings. 1. Month 2. Week (1st/2nd/3rd/4th/End) 3. Day of week 4. Time(00 - 23): No setting by minutes Default: No setting T-1-11 Timer Settings...
  • Page 33: Adjustment/Cleaning

    Chapter 1 1.2.3.9 Adjustment/Cleaning 0020-9563 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c *: default settings T-1-12 Adjustment/Cleaning Item Settings Full Correction (Test Print 1->Start reading x 3 times) Auto Gradation Correction Quick Correction (No test print-> Start) Copy Image Collection Feeder Dirty Auto Correct.
  • Page 34: System Management Set

    Chapter 1 1.2.3.11 System Management Set. 0020-9564 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c *: default settings *4: Only when the appropriate optional equipment is attached. System Manager Info. Set. T-1-15 System Management Set. > System Manager Info. Set. Item Settings System Mgmt.
  • Page 35 Chapter 1 User ID Management T-1-18 System Management Set. > User ID Management Item Settings (User ID Management) OFF*/ON Card ID Management T-1-19 System Management Set. > Card ID Management Item Settings Register ID/Password Dept. ID Max. 8 characters Password Max.
  • Page 36 Primary DNS Server IP Address (0.0.0.0*) Secondary DN Server IP Address (0.0.0.0*) DNS Host/Domain Name Host Name Max. 47 characters (*: Canon****** (“******”represents the last six digits of a MAC address)) Domain Name Max. 47 characters DNS Dynamic Update Settings OFF*/ON 1-19...
  • Page 37 DNS Host/Domain Name Use Same Host Name/Domain Name as OFF*/ON IPv4 Host Name Max. 47 characters (*: Canon****** (“******”represents the last six digits of a MAC address)) Domain Name Max. 47 characters DNS Dynamic Update Set. Use DNS Dynamic Update OFF*/ON Manual Address Regist.
  • Page 38 Chapter 1 T-1-22 System Management Set. > Network Settings Item Settings TCP/IP Settings WINS Configuration *4 WINS Resolution OFF*/ON WINS Server Address IP Address (Only when WINS resolution is implemented) (0.0.0.0) * LPD Print Settings OFF/ON* RAW Print Settings OFF/ON* Use Bidirectional OFF*/ON WSD Print Settings...
  • Page 39 Enter IP address in the case that a DNS server is not provided. In the case that an IP address for the DNS server is registered, enter a name that the DNS server can understand. Ex.: mail_server.ccm.canon.co.jp Account for sending E mail, I-Fax...
  • Page 40 Chapter 1 Forwarding Settings *4 T-1-25 System Management Set. > Forwarding Settings *4 Item Settings Forwarding Condition Setting All, Fax, I-Fax *4 Switch Forwarding On / Off OFF*/ON Register Fowarding Cond. Name Max. 50 characters Forwarding Condition Setting Fax *, I-Fax Forwarding Condition Destination: Pull-down (disregard *, Does Not Exist, equals, differs from, begins with, ends with, contains, does not...
  • Page 41 Chapter 1 Auto Online/Offline T-1-29 System Management Set. > Auto Online/Offline Item Settings Auto Online OFF*/ON Auto Offline OFF*/ON Job Log Display T-1-30 System Management Set. > Job Log Display Item Settings (Job Log Display) OFF/ON* Memory Media Store Log T-1-31 System Management Set.
  • Page 42: Maintenance By The User

    Chapter 1 1.2.4 Maintenance by the User 1.2.4.1 Cleaning 0019-5678 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c If the original is not copied clearly, clean the machine. For high-quality printouts, we recommend cleaning the machine once or twice a month. - Do not use alcohol, benzene, paint thinner, or other solvents for cleaning.
  • Page 43 Chapter 1 F-1-12 The display returns to the Adjustment/Cleaning screen. MEMO: - Discard the cleaning sheet after use. - The cleaning process cannot be canceled. Please wait until it is completed. 6) Press (Main Menu) to return to the Main Menu screen. Scanning Area Keep the scanning area clean to avoid dirty copies or faxes to be sent.
  • Page 44 Chapter 1 1) Press (Main Menu). 2) Press the right Any key to select <Additional Func>. F-1-16 3) Use [ ], [ ], or (Scroll Wheel) to select <Adjustment/Cleaning>, then press [OK]. F-1-17 4) Use [ ], [ ], or (Scroll Wheel) to select <Feeder Cleaning>, then press [OK]. F-1-18 5) Place 10 sheets of blank paper into the feeder.
  • Page 45: Safety

    Chapter 1 1.2.5 Safety 1.2.5.1 Points to note at disassembly/assembly 0019-4906 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Make sure to follow the instruction below at disassembly/assembly. 1. At disassembly/assembly, be sure to unplug the power plug for safety reason. 2.
  • Page 46: Safety Of Toner

    Chapter 1 1.2.5.5 Safety of Toner 0018-9079 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c About Toner The machine’s toner is a non-toxic material made of plastic, iron, and small amounts of dye. Do not throw toner into fire. It may cause explosion. Toner on Clothing or Skin 1.
  • Page 47: Product Specifications

    Chapter 1 1.2.6 Product Specifications 1.2.6.1 Main Body Specifications 0020-1287 imageCLASS MF9170c / imageCLASS MF9150c Copyboard Fixed copyboard Body Desktop Light source type Cold-cathode tube Lens type Fixed focal length lens Photosensitive medium OPC drum (24 mm dia) Image reading method Exposure method 2-polygon 4-laser (2-beam/laser) Charging method...
  • Page 48 Chapter 1 Print speed(LTR) 22 ppm Paper type (See "Paper Type") Cassette paper size LTR, LGL, EXEC, FLSC, OFI, B-OFI, M-OFI, A4, A5, B5 Multifeeder paper size LTR, LGL, STMT, EXEC, FLSC, OFI, B-OFI, M-OFI, G-LTR, G-LGL, A4, A5, B5, Custom Size, COM10, Monarch, DL, ISO-C5, ISO-B5 Cassette paper type Plain, Recycled Paper, Color, Bond, Heavy, Rough Multifeeder tray paper type...
  • Page 49 Chapter 1 Multifeeder pickup method Duplo (Center line) Drum cleaning method Cleaning blade Transfer cleaning method Electrostatic cleaning Fixing method On-demand fixing Delivery method Face down Toner level detection function Provided Toner type Nonmagnetic 1-component toner Toner supply type All-in-one cartridge Toner save mode Provided Original type...
  • Page 50: Adf Specifications

    Chapter 1 Operating environment 10 to 30 degC (temperature range) Operating environment Humidity equivalent to 10 to 80% (humidity range) Noise At standby: - Less than 43dB (Sound power level) At copying: - B&W: 64.95 dB - Color: 66.1 dB Power supply rating Rated input voltage: 100 to 127V (100V model)/220 to 240V (200V model)
  • Page 51: Fax Specifications

    Chapter 1 1.2.6.4 FAX Specifications 0020-0877 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Applicable lines Public Switched Telephone Network (PSTN) * PSTN currently supports the modem speed of up to 28.8Kbps. It, however, differs depending on the telephone line condition. Number of lines connected: 1 Transmission method Modulation method...
  • Page 52: Function List

    Chapter 1 1.2.7 Function List 1.2.7.1 Print Speed 0019-4886 imageCLASS MF9170c / imageCLASS MF9150c First copy time The following standard is defined with "35 seconds" after printing 90 sheets of A4-size plain paper in the mode of "1 vs. multiple copies" *1 at copyboard reading. (Unit: second) T-1-37 Mode/Pickup position...
  • Page 53 Chapter 1 1.2.7.2 Print Speed 0020-0210 imageCLASS MF8450c First copy time The following standard is defined with "25 seconds" after printing 75 sheets of A4-size plain paper in the mode of "1 vs. multiple copies" *1 at copyboard reading. (Unit: second) T-1-39 Mode/Pickup position Size...
  • Page 54: Paper Type

    Chapter 1 1.2.7.3 Paper Type 0020-5103 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Paper Type Supported paper types are shown below: A: available -: not available T-1-41 Type Weight Cassette/ Manual feed tray Optional cassette Plain From 19 to 24 lb (70 to 90 g/m2) Plain H From 20 to 28 lb (75 to 105 g/m2) Color...
  • Page 55: Chapter 2 Basic Operation

    Chapter 2 Basic Operation...
  • Page 56 Contents Contents 2.1 Construction................................... 2-1 2.1.1 Functional Configuration ................................2-1 2.1.2 Connecting the Main PCBs ................................2-2 2.2 Basic Sequence ................................2-3 2.2.1 Basic Sequence of Operation ............................... 2-3 2.2.2 Power-On Sequence ..................................2-4...
  • Page 57: Construction

    Chapter 2 2.1 Construction 2.1.1 Functional Configuration 0019-5071 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c This machine's functions are divided into 8 blocks. Original feed system Main controller Original exposure system Laser exposure system Image formation system External/auxiliary control system Pickup/feed system Fixing system F-2-1...
  • Page 58: Connecting The Main Pcbs

    Chapter 2 2.1.2 Connecting the Main PCBs 0019-9009 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c PCB8 J3004 J3012 J3013 J3016 J1004 J1006 J8125 J8129 J801 J201 J8120 PCB14 J209 J1022 J6028 PCB9 J801 J202 PCB2 J8113 J6151 J8502 J406 J1024 PCB13 PCB11...
  • Page 59: Basic Sequence

    Chapter 2 2.2 Basic Sequence 2.2.1 Basic Sequence of Operation 0019-5072 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The operational sequence of a printer is controlled by the microcomputer (CPU) on the DC controller. The purposes of each period, from power-ON until the inverter motor stops after the completion of printing, are listed below. T-2-1 Operation Interval...
  • Page 60: Power-On Sequence

    Chapter 2 2.2.2 Power-On Sequence 0019-5073 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Power-on sequence is to reset the machine's status and to check that there is no JAM or failure. The sequences from power-ON until the stand-by status are as below. Power-ON Initialize CPU Initialize ASIC...
  • Page 61: Chapter 3 Main Controller

    Chapter 3 Main Controller...
  • Page 62 Contents Contents 3.1 Overview/Configuration ..............................3-1 3.1.1 Overview ...................................... 3-1 3.1.2 Configurations/functions................................3-2 3.2 Set-Up Sequence................................3-4 3.2.1 Overview ...................................... 3-4 3.2.2 Startup Sequence ..................................3-5 3.3 Image Processing ................................3-6 3.3.1 Overview of the Image Flow................................ 3-6 3.3.2 Construction of the Image Processing Module ..........................3-6 3.3.3 Reader Unit Input Image Processing............................
  • Page 63: Overview/Configuration

    Chapter 3 3.1 Overview/Configuration 3.1.1 Overview 0020-0204 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The machine's main controller mainly consists of the following parts. T-3-1 PCB Name Function Main controller PCB System control, memory control, image processing control, interface control Extended RAM DIMM Memory for image storage Memory for work (image processing and data analysis, etc.)
  • Page 64: Configurations/Functions

    Chapter 3 3.1.2 Configurations/functions 0019-8989 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c J8125 J8131 J8120 J8121 J8140 J8113 J8129 J8117 J8103 J8114 J8133 J8109 IC13 J8118 J8119 J8112 J8110 J8132 IC28 J8104 IC27 IC24 J8111 IC30 IC31 IC33 IC32 J8106 IC34 IC35...
  • Page 65 Chapter 3 T-3-3 Jack No. Function Connect to J8101 Serial interface for debug J8102 Not implemented J8103 USB on a control panel, Connect to a media card reader Control panel relay PCB J8104 USB device connector USB device J8106 RAM DIMM connector RAM DIMM for expansion J8109 SRAM connector for debug...
  • Page 66: Set-Up Sequence

    Chapter 3 3.2 Set-Up Sequence 3.2.1 Overview 0020-8294 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The system software controlling the machine is stored in the main program ROM in the main controller PCB. At the time of startup, the CPU reads the system software from the main program ROM into the main memory (DDR-SDRAM) according to the boot program in the BOOT ROM.
  • Page 67: Startup Sequence

    Chapter 3 3.2.2 Startup Sequence 0020-8295 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1. Boot Program Executed by the CPU in the main controller PCB when the main power switch is turned on. Check the status of the image memory (DDR-SDRAM). Load the control program from the main program ROM to the memory if the status is normal.
  • Page 68: Image Processing

    Chapter 3 3.3 Image Processing 3.3.1 Overview of the Image Flow 0020-0950 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Other iR machine Original Copy Scan -SEND -FAX -PullScan -E-Mail Image data -PDL Print Print output F-3-5 3.3.2 Construction of the Image Processing Module 0020-0951 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Image processing is mainly executed by the main controller PCB.
  • Page 69: Reader Unit Input Image Processing

    Chapter 3 3.3.3 Reader Unit Input Image Processing 0020-0952 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The main controller PCB performs image processing to the image data read by the CCD. Reader unit Main controller PCB Enlargement/reduction Edge emphasis To compression/expansion/editing block F-3-7 3.3.4 Compression/ Extesion/ Editing Block...
  • Page 70: Printer Unit Output Image Processing

    Chapter 3 3.3.5 Printer unit Output Image Processing 0020-0954 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The main controller PCB performs image processing to perform printing to the image data received from the reader unit. Main controller PCB Compression/expansion/editing block -intensify-to-density conversion -density adjustment (F adjustment) -gamma correction...
  • Page 71: Image Data Flow

    Chapter 3 3.4 Image Data Flow 3.4.1 Flow of Image Data According to Copy Functions 0020-0955 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Reader unit Main controller PCB Image processing block for reader unit Data rotation Data compression Data expansion Image processing block for printer unit (row data) DC controller PCB...
  • Page 72: Flow Of Image Data For The Send Function

    Chapter 3 3.4.2 Flow of Image Data for the SEND Function 0020-0956 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Reader unit Main controller PCB Image processing block for reader unit Data expansion USB1.1 Data rotation Resolution conversion Ethernet port (compression data) To network F-3-11...
  • Page 73: Flow Of Image Data For The Fax Reception Function

    Chapter 3 3.4.4 Flow of Image Data for the Fax Reception Function 0020-0958 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Modem board Main controller PCB Image processing block for fax Data rotation Data compression Data expansion Image processing block for printer unit DC controller PCB F-3-13 3.4.5 Flow of Image Data for the PDL Function...
  • Page 74: Parts Replacement Procedure

    Chapter 3 3) Remove the Main controller PCB [1]. - 2 connectors [2] 3.5 Parts Replacement Procedure - 10 screws [3] 3.5.1 Main Controller PCB 3.5.1.1 Before Removing the Main Controller PCB 0020-3324 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit] 2) Remove the rear cover unit.(page 10-11)Reference [Removing the Rear Cover Unit]...
  • Page 75: Chapter 4 Original Exposure System

    Chapter 4 Original Exposure System...
  • Page 76 Contents Contents 4.1 Basic Construction................................. 4-1 4.1.1 Overview ...................................... 4-1 4.1.2 Major Components..................................4-1 4.2 Basic Sequence ................................4-3 4.2.1 Basic Sequence of Operation at Power-on ........................... 4-3 4.2.2 Basic Sequence of Operation in Response to a Press on the Start Key (book)................4-4 4.3 Various Control ................................
  • Page 77: Basic Construction

    Chapter 4 4.1 Basic Construction 4.1.1 Overview 0019-8961 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c T-4-1 Item Function/Method Lamp Cold-cathode tube Document scan Book mode: Scanning by movement of the CCD unit ADF: Scanning in stream reading mode with CCD unit fixed Reading resolution 600 dpi x 600 dpi Gradation...
  • Page 78 Chapter 4 Constitution of the CCD unit The light illuminated from the 2 document lamps (LAMP1, 2) is reflected to the original and reaches to the CCD via the 4 mirrors and the lenses. F-4-2 CCD PCB (PCB11) Inverter PCB (PCB12) Document lamps (LAMP1, 2) CCD unit Mirrors...
  • Page 79: Basic Sequence

    Chapter 4 4.2 Basic Sequence 4.2.1 Basic Sequence of Operation at Power-on 0019-8965 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c HP shift HP shift Pre-scan operation *1 WAIT Reader motor (M12) Document lamp (LAMP1,2) Reader HP sensor (SR717) End position of pre-scan : Motor forward : Motor reverse : Document lamp ON...
  • Page 80: Basic Sequence Of Operation In Response To A Press On The Start Key (Book)

    Chapter 4 4.2.2 Basic Sequence of Operation in Response to a Press on the Start Key (book) 0019-8966 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Move shading correction *2 HP shift Book Position shift Scan movement HP shift Start key ON Gain correction *1 STBY SREADY...
  • Page 81: Various Control

    Chapter 4 4.3 Various Control 4.3.1 Lamp Control 4.3.1.1 Overview 0020-0963 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Advance lamp activation control It takes 9 to 25 sec (which varies depending on the surrounding temperature) from when the cold-cathode tube lamp, which is used as a document lamp, is activated to when the light intensity reaches the target intensity.
  • Page 82: Enlargement/Reduction

    Chapter 4 4.3.2 Enlargement/Reduction 4.3.2.1 Overview 0019-8967 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The machine does not perform optical magnification change. It always reads a document at 100 % (original size). However, the main controller has a function to perform digital magnification change at 50 to 200 %, and the magnification can be set in increments/decrements of 1 %.
  • Page 83: Dirt Sensor Control

    Chapter 4 4.3.4 Dirt Sensor Control 4.3.4.1 Overview 0019-8969 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The machine performs dust detection control when stream reading is performed on the ADF. When dust is adhered to the scanning glass surface, the correction is made to remove the dust from the scanned image. Dust detection control is executed for all documents for which stream reading is performed regardless of the mode.
  • Page 84: Parts Replacement Procedure

    Chapter 4 4.4 Parts Replacement Procedure 4.4.1 ADF Unit + Reader Unit 4.4.1.1 Before Removing the ADF Unit + Reader Unit 0020-0717 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the rear cover unit.(page 10-11)Reference [Removing the Rear Cover Unit] 4.4.1.2 Removing the ADF Unit + Reader Unit 0019-5945...
  • Page 85 Chapter 4 8) Disconnect the 2 connectors [1]. Open the connector holder [2] to discon- nect the flat cable [3]. F-4-14 6) Close the ADF upper cover [1]. F-4-17 9) Open the ADF unit + reader unit [1]. F-4-15 7) Remove the ADF unit communication cable [1]. - 1 screw [2] - 1 connector [3] F-4-18...
  • Page 86: Procedure After Replacing The Adf Unit

    Chapter 4 After replacing the ADF unit, execute automatic detection of the CCD read- ing position at ADF stream reading in the following service mode. COPIER> FUNCTION> INSTALL> STRD-POS [Operation] Adjust the reading position by moving the scanner in increments of 0.1 [Time] When the lamp is turned on: Adjustment time;...
  • Page 87: Procedure After Replacing The Reader Unit

    Chapter 4 F-4-23 MEMO: The CCD unit in the reader unit cannot be replaced in the field. If the CCD unit is broken, replace the reader unit. 4.4.2.3 Procedure after Replacing the Reader Unit 0021-0345 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c After replacing the reader unit, execute automatic detection of the CCD read- ing position at ADF stream reading in the following service mode.
  • Page 88: Chapter 5 Original Feeding System

    Chapter 5 Original Feeding System...
  • Page 89 Contents Contents 5.1 Basic Construction................................. 5-1 5.1.1 Overview ...................................... 5-1 5.2 Basic Operation ................................5-3 5.2.1 Operation Mode.................................... 5-3 5.2.2 Document Size Detection................................5-5 5.3 Detection Jams................................5-6 5.3.1 Overview ...................................... 5-6 5.4 ADF/DADF ................................... 5-7 5.4.1 ADF/DADF....................................5-7 5.4.1.1 Removing the ADF unit....................................5-7 5.4.1.2 Procedure after Replacing the ADF Unit................................5-8 5.4.2 Pickup Feed Unit..................................
  • Page 90: Basic Construction

    Chapter 5 5.1 Basic Construction 5.1.1 Overview 0019-8971 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c [10] [11] [12] F-5-1 Document tray Slide guide ADF delivery roller ADF pickup roller ADF separation roller ADF pickup motor (M13) CCD unit ADF feed roller Reading glass surface [10] ADF separation pad [11] ADF delivery solenoid (SL5016)
  • Page 91 Chapter 5 All the ADF rollers are driven by the ADF pickup motor. Main controller PCB ADF relay PCB SR718 SL5016 SR719 F-5-3...
  • Page 92: Basic Operation

    Chapter 5 5.2 Basic Operation 5.2.1 Operation Mode 0019-8972 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Single-sided continuous pickup The following shows the operation sequence when two sheets of single-sided documents are set on the document tray. 1) The ADF paper sensor (SR718) detects the document loaded on the document tray, and sends a signal indicating "paper exists" to the main controller. 2) The ADF pickup motor (M13) rotates forward.
  • Page 93 Chapter 5 5) When the trailing edge of the second page passes through the ADF paper trailing edge sensor (SR719), the ADF paper sensor detects presence/absence of the paper. When no document is detected, the document is considered to be the last page. SR718 SR719 F-5-7...
  • Page 94: Document Size Detection

    Chapter 5 3) The ADF pickup motor rotates in reverse. The document is fed through the reverse path. When the ADF paper trailing edge sensor detects the lead edge of the document, the ADF pickup motor stops. As soon as receiving a drive signal from the main controller, the ADF pickup motor rotates forward. In this condition, the ADF delivery rollers are disengaged by driving the ADF pickup solenoid (SL5016) so that the document is not pulled.
  • Page 95: Detection Jams

    Chapter 5 5.3 Detection Jams 5.3.1 Overview 0019-8974 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Jam detection T-5-1 Single-sided Double-sided Jam Code Jam Type Jam Condition Reading Reading The leading edge of paper does not reach the ADF paper trailing edge sensor within 1.8 sec after the trailing edge of precedent page passes through the ADF paper trailing edge sensor in 1-sided multiple jobs.
  • Page 96: Adf/Dadf

    Chapter 5 5.4 ADF/DADF 5.4.1 ADF/DADF 5.4.1.1 Removing the ADF unit 0018-9058 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Open the ADF upper cover [1]. F-5-13 2) While pushing the claw [1], remove the ADF upper front cover [2]. F-5-15 4) Open the ADF tray [1] to the position indicated in the figure below to re- move it upward.
  • Page 97: Procedure After Replacing The Adf Unit

    Chapter 5 8) Open the ADF unit [1]. F-5-17 6) Close the ADF upper cover [1]. F-5-20 9) Remove the ADF unit [1]. F-5-18 7) Remove the ADF unit communication cable [1]. - 1 screw [2] - 1 connector [3] - 1 wire saddle [4] F-5-21 5.4.1.2 Procedure after Replacing the ADF Unit...
  • Page 98 Chapter 5 1) Open the ADF upper cover [1]. F-5-22 2) While pushing the claw [1], remove the ADF upper front cover [2]. F-5-24 4) Open the ADF tray [1] to the position indicated in the figure below to re- move it upward.
  • Page 99: Pick-Up Roller

    Chapter 5 8) Remove the ADF pickup feed unit [1]. - 4 screws [2] F-5-26 6) Close the ADF upper cover [1]. F-5-29 5.4.3 Pick-up Roller 5.4.3.1 Removing the ADF Pickup Roller 0018-9174 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Open the ADF upper cover [1].
  • Page 100: Separation Roller

    Chapter 5 F-5-31 3) Remove the ADF pickup roller [2] from the ADF pickup roller shaft [1]. F-5-34 3) Release the claw [1] to remove the gear [2]. F-5-32 5.4.4 Separation Roller 5.4.4.1 Removing the ADF Separation Roller 0019-5919 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Open the ADF upper cover [1].
  • Page 101: Pick-Up Motor

    Chapter 5 F-5-38 7) Fit the groove [1] of the ADF separation roller cover with the projection [2] of the ADF separation roller shaft to remove the ADF separation roller shaft [3]. F-5-36 5) Move the ADF separation roller unit [1] in the direction of the arrow [A] to remove it from the ADF upper cover in the direction of the arrow [B].
  • Page 102: Pick-Up Solenoid

    Chapter 5 F-5-41 F-5-44 2) Remove the claw [1] to remove the harness guide [2]. 6) Remove the fixing plate [2] from the ADF pickup motor [1]. - 2 screws [3] F-5-45 5.4.6 Pick-up Solenoid 5.4.6.1 Before Removing the ADF Pickup Solenoid 0018-9066 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c F-5-42...
  • Page 103: Separation Pad

    Chapter 5 F-5-47 3) Remove the ADF pickup solenoid [2] from the ADF pickup solenoid unit [1]. -2 screws [3] F-5-50 3) Remove the 2 screws [1]. 4) Push the 2 claws [2] in the direction of the arrow [A] to remove the ADF separation claw cover [3].
  • Page 104 Chapter 5 F-5-56 F-5-53 7) Open the inner guide [1]. F-5-54 8) Remove the ADF separation pad unit [1]. F-5-55 9) Remove the separation pad fixing pin [1] and the sheet [2], and then re- move the ADF separation pad [3]. 5-15...
  • Page 105: Chapter 6 Laser Exposure

    Chapter 6 Laser Exposure...
  • Page 106 Contents Contents 6.1 Overview/Configuration ..............................6-1 6.1.1 Overview ...................................... 6-1 6.2 Controlling the Laser ..............................6-3 6.2.1 Overview ...................................... 6-3 6.2.2 Laser Light Emission Control ..............................6-4 6.2.3 Laser Light Intensity Control ............................... 6-4 6.2.4 Image Masking Control................................6-4 6.2.5 Failure Detection ..................................6-4 6.3 Controlling the Laser Scanner Motor ..........................
  • Page 107: Overview/Configuration

    Chapter 6 6.1 Overview/Configuration 6.1.1 Overview 0019-5006 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The laser exposure system forms latent images on the photosensitive drum according to the video signals with the control by the DC controller. The laser exposure system consists of the laser scanner unit. The 2 laser driver PCBs, the 2 scanner motors, and the 2 polygon mirrors are installed on the laser scanner unit.
  • Page 108 Chapter 6 The following is the operational sequence at printing. 1) Upon reception of a print command from the main controller, the DC controller rotates the 2 scanner motors. The 2 polygon mirrors rotate in conjunction with the scanner motors. 2) The DC controller allows the laser diode on the laser driver PCB to emit light.
  • Page 109: Controlling The Laser

    Chapter 6 6.2 Controlling the Laser 6.2.1 Overview 0019-5007 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The laser control is to allow the laser driver to turn the laser diode ON/OFF according to the laser control signals sent from the DC controller. There are two laser driver PCBs: one is for M/C and the other is for Y/Bk.
  • Page 110: Laser Light Emission Control

    Chapter 6 6.2.2 Laser Light Emission Control 0020-0857 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c In this machine, the laser diode ON/OFF is controlled according to the laser light emission mode. The laser light emission mode is determined based on the combination of the laser control signals (LD_CTL 0 to 2) that is output by the DC controller. The laser driver IC receives the laser control signals from the DC controller and emits the laser diode according to the laser light emission mode.
  • Page 111: Controlling The Laser Scanner Motor

    Chapter 6 6.3 Controlling the Laser Scanner Motor 6.3.1 Overview 0019-5010 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c In the DC controller, the scanner motor control is performed to emit the laser beam at the correct position on the photosensitive drum. The scanner motor control is to rotate the scanner motor at its specified speed and phase.
  • Page 112: Parts Replacement Procedure

    Chapter 6 6.4 Parts Replacement Procedure - Do not disassemble the laser scanner unit in the field. Disassembling it may cause a functional fault. 6.4.1 Laser/Scanner Unit - When holding the laser scanner unit, be careful not to touch the laser PCB [1] and the lens [2].
  • Page 113: Chapter 7 Image Formation

    Chapter 7 Image Formation...
  • Page 114 Contents Contents 7.1 Overview/Configuration ..............................7-1 7.1.1 Overview ...................................... 7-1 7.1.2 Print Process....................................7-2 7.1.3 Electrostatic Latent Image Formation Block ..........................7-3 7.1.4 Development Block..................................7-4 7.1.5 Transfer Block....................................7-4 7.1.6 Fixing Block....................................7-6 7.1.7 Cleaning Block..................................... 7-6 7.2 Image Stabilization Control............................7-7 7.2.1 Overview ......................................
  • Page 115 Contents 7.5.7.1 Before Removing the Color Displacement/Density Sensor ......................... 7-34 7.5.7.2 Removing the Color Displacement/Density Sensor ............................. 7-34...
  • Page 116: Overview/Configuration

    Chapter 7 7.1 Overview/Configuration 7.1.1 Overview 0019-5012 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The image formation system forms a toner image on paper, which is controlled by the DC controller. It consists of four toner cartridges and the ETB unit, etc. The DC controller controls the laser scanner unit, and forms an electrostatic latent image on the photosensitive drum based on the video signal received from the main controller.
  • Page 117: Print Process

    Chapter 7 7.1.2 Print Process 0019-5013 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The print process is performed in 10 steps with five blocks. A toner image is formed on paper when the steps in each block are executed in sequence. 1.
  • Page 118: Electrostatic Latent Image Formation Block

    Chapter 7 7.1.3 Electrostatic Latent Image Formation Block 0019-5014 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c In this block, an electrostatic latent image is formed on the photosensitive drum by following three steps. When a laser beam scans the photosensitive drum charged with a negative potential, an image with negative charge is formed on the photosensitive drum. This image is called "an electrostatic latent image"...
  • Page 119: Development Block

    Chapter 7 7.1.4 Development Block 0019-5015 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c In this block, toner is adhered to the electrostatic latent image on the photosensitive drum to make it visible by the contact development method. In the contact development method, the developing cylinder is closely engaged with the photosensitive drum. Development is performed when toner is transferred from the developing cylinder to the photosensitive drum.
  • Page 120 Chapter 7 Step 6: Transfer The toner on the photosensitive drum is transferred to paper. The transfer roller is located at the opposite side of the photosensitive drum across the ETB. A positive DC bias is applied to the transfer roller. Since the ETB is charged positive by the transfer roller, the negative-charged toner on the photosensitive drum is transferred to the paper.
  • Page 121: Fixing Block

    Chapter 7 7.1.6 Fixing Block 0019-5017 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c In this block, a toner image is fixed on paper. The toner image transferred to the paper can be smeared easily by hands since it is only attracted to the paper by a static electricity. When pressure and heat are applied to the paper and toner image, the toner image melts with mixed colors and becomes a permanent printed image (on-demand fixing).
  • Page 122: Image Stabilization Control

    Chapter 7 7.2 Image Stabilization Control 7.2.1 Overview 0019-5019 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The quality of a printed image is affected by changes in environmental condition where the machine is installed or changes in the characteristics of the photosensitive drum and toner.
  • Page 123: Environmental Change Corrective Control

    Chapter 7 7.2.2 Environmental Change Corrective Control 0019-5020 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c This control corrects values of primary charging biases and developing biases to obtain an optimum image under the detected environmental condition. Explanation of operation The environment sensor sends detected temperature and humidity to the DC controller as a temperature signal and a humidity signal.
  • Page 124: D-Half Control

    Chapter 7 7.2.3 D-half Control 0019-5021 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c This control corrects the gradation data based on the halftone density in order to obtain ideal image gradation. The DC controller executes this control following the command sent from the main controller. Explanation of operation 1) When receiving a command of executing density measurement from the main controller, the DC controller forms a pattern image for image gradation correction for each color on the ETB.
  • Page 125 Chapter 7 A pattern image for image gradation correction Image gradation correction pattern is formed on the position away from ETB center to right and left in the following order. ETB 1st round 1) Pattern image for adjustment of LED light intensity Y, C, M pattern is printed on the left side only.
  • Page 126: Color Displacement Corrective Control

    Chapter 7 7.2.4 Color Displacement Corrective Control 0019-5022 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c This control corrects color displacement which occurs due to individual difference of the laser scanner unit and toner cartridge. Since this machine uses a different toner cartridge for each color, a difference may occur in the position or the size of an image depending on the color. The machine performs correction by calculating the degree of color displacement based on the position of the pattern image for color displacement correction formed on the ETB and controlling a video signal for each color.
  • Page 127 Chapter 7 7) The main controller controls a video signal for each color based on the degree of color displacement of each color received, and makes adjustments of the main scanning start position, main scanning magnification, and sub scanning start position. Main controller PCB DC controller PCB Light emitter (LED)
  • Page 128 Chapter 7 Error Codes: E020 Warning: color displacement/density sensor abnormality When light could not be received by the light receiver, the machine sets an initial value for the color displacement corrective value, and displays the error code on the control panel. Pattern image for color displacement correction The pattern images are formed on both sides of the ETB certain distance away from the center in the following order.
  • Page 129: Auto Gradation Correction Control

    Chapter 7 7.2.5 Auto Gradation Correction Control 0020-9652 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Overview Auto gradation correction control is to stabilize the gradation density features of image. To execute, select [Adjustment/Cleaning > Auto Gradation Correction] in additional function mode. It has the following 3 correction controls.
  • Page 130: Toner Cartridge

    Chapter 7 7.3 Toner Cartridge 7.3.1 Overview 0019-5023 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The toner cartridge enables to form a toner image on the photosensitive drum. It consists of the photosensitive drum, primary charging roller, and developing cylinder, etc. There are four kinds of print cartridges: Magenta, Cyan, Yellow, and Black, having nearly identical structure.
  • Page 131: Toner Level Detection

    Chapter 7 7.3.2 Toner Level Detection 0020-8176 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The machine uses a transparent toner level detection method. With this method, light goes through the toner cartridge while the toner is stirred driven by the drum motor. The DC controller detects the toner level by monitoring how long it takes for the light to go through the cartridge.
  • Page 132: New Toner Cartridge Detection

    Chapter 7 7.3.5 New Toner Cartridge Detection 0020-0794 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c It is detected whether the protection material has been removed from the new cartridge. At the time of shipment, a toner cartridge with a protection material (sealing tape) has been inserted into the machine. This protection material needs to be removed when the machine is installed.
  • Page 133: Developing Cylinder Engagement/Disengagement Control

    Chapter 7 7.3.6 Developing Cylinder Engagement/disengagement Control 0019-5026 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c In the machine, the developing cylinder is engaged with or disengaged from the photosensitive drum as necessary for the following purposes. - To reduce the color photosensitive drum consumption at the time of monochrome printing - To prevent lines of the photosensitive drum due to engagement with the developing cylinder - To prevent toner transfer when printing is not performed MEMO:...
  • Page 134: Transfer Unit

    Chapter 7 7.4 Transfer Unit 7.4.1 ETB Unit 0019-8976 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The ETB unit transfers toner into paper while feeding the paper. The ETB unit consists of the ETB, ETB tension roller, ETB feed roller, ETB slave roller, attraction roller, and transfer roller. The ETB motor (M5) rotates the ETB feed roller, and this drive rotates the ETB.
  • Page 135: Automatic Bias Control

    Chapter 7 7.4.2 Automatic Bias Control 0019-8977 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Depending on the individual difference or deterioration condition of the transfer roller, attraction roller, and ETB, differences and changes occur in the resistance value of each unit. In this condition, a transfer failure may occur when an expected level of bias is not applied to each roller. This control is executed to apply the optimum level of bias to each roller based on the measured voltage of each roller.
  • Page 136: Etb Cleaning

    Chapter 7 7.4.3 ETB Cleaning 0019-8978 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The ETB is used not only to transfer the toner on the photosensitive drum to the paper but also to write a pattern image for correction for image stabilization control. If the toner which is not transferred to the paper remains on the ETB, it causes stain on the back of paper.
  • Page 137: Transfer Roller Engagement/Disengagement Control

    Chapter 7 7.4.4 Transfer Roller Engagement/disengagement Control 0019-8979 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Overview In the machine, the transfer roller is engaged with or disengaged from the photosensitive drum via the ETB to reduce the color photosensitive drum consumption at monochrome printing.
  • Page 138 Chapter 7 Explanation of operation When the DC controller turns ON the ETB disengagement solenoid (SL5011), the drive of the ETB motor (M5) is sent to the transfer roller disengagement slider via the transfer roller disengagement cam. The transfer roller is engaged with/disengaged from the ETB by working with the transfer roller disengagement slider. DC controller PCB Transfer roller Bk toner cartridge...
  • Page 139 Chapter 7 (a) Standard position (All colors' transfer rollers are engaged) When the transfer roller disengagement slider is placed at the standard position, all the transfer roller holders are placed at the lowest position of the slope, so the all colors' transfer rollers are engaged with the ETB. At the time of color printing or monochrome printing of the specified thick paper, all the transfer rollers are engaged with the ETB, so the transfer roller disengagement slider is considered to be at the standard position.
  • Page 140 Chapter 7 (c) Upward position (All colors' transfer rollers are disengaged) When the transfer roller disengagement slider is placed at the upward position, the transfer roller holder moves to the highest position along the slope 2, so the all colors' transfer rollers are disengaged from the ETB. Transfer roller Slope2 Transfer roller holder...
  • Page 141: Parts Replacement Procedure

    Chapter 7 7.5 Parts Replacement Procedure 7.5.1 Drum Motor 7.5.1.1 Before Removing the Drum Motor 0020-5298 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit. (page 7-31)Reference[Removing the ETB Unit] 2) Remove the rear cover unit. (page 10-11)Reference[Removing the Rear Cover Unit] 3) Remove the right cover.
  • Page 142 Chapter 7 F-7-39 7) Free the cable from the cable guide [1]. F-7-35 3) Free the harness [2] from the wire saddle [1]. F-7-40 8) Remove the cable guide [1]. - 1 claw [2] F-7-36 4) Remove the screw [1], remove the hook [2] in the direction of the arrow [A], and remove the interlock switch unit [3] in the direction of the arrow [B].
  • Page 143: Point To Note When Installing The Main Drive Unit

    Chapter 7 F-7-44 F-7-48 12) Remove the cable guide [1]. Following shows the procedure: - 1 screw [2] 1) Align the gear [5]'s elongate hole [2] with the triangle [1]. - 2 claws [3] 2) Interlock the teeth of the gears [5] and [6] so that the holes [3] of the gears will lie right next to each other.
  • Page 144 Chapter 7 When removing the shipping lock that is attached with the main drive unit as a Service Parts, or when removing the main drive unit for servicing, the main drive unit must be aligned before installing to the host machine. 1) Shift the 4 levers [1] of the main drive unit [2] upward.
  • Page 145: Developing Estrangement Solenoid

    Chapter 7 Move the drawer connector [1] at the right side to check that the couplings [2] and the lock [3] of the toner cartridge for the four colors; BK, Y, C, and M work with each other. F-7-60 3) Disconnect the 2 connectors [1] and free the harness [4] from the harness guide [2] and the wire saddle [3].
  • Page 146: Points To Note When Installing The Developing Disengage Solenoid

    Chapter 7 [1]. Make sure that the small-toothed gear is aligned with the elongate hole [2] (home position). Also, as shown in the figure [4], make sure that the triangle and the elongate hole of the gear lie right next to each other. F-7-64 7.5.3.3 Points to Note When Installing the Developing Disengage Solenoid...
  • Page 147: Etb Motor

    Chapter 7 When closing the front cover with the ETB unit removed and then and opening it, the drawer connector [1] faces upward. The drawer connector facing upward may cause the following symptoms; and therefore, be sure to put down the 2 drawer connectors [1] if necessary. - When the toner cartridge is not removed The shutter of the toner cartridge is opened, resulting in deteriorated sensitivity of the photosensitive drum.
  • Page 148: Etb Estrangement Solenoid

    Chapter 7 F-7-73 F-7-77 2) Remove the ETB right cover [1]. - 3 screws [2] - 5 claws [3] F-7-74 F-7-78 F-7-75 3) Remove the ETB motor [1]. - 1 connector [2] F-7-79 F-7-76 F-7-80 7.5.6 ETB Estrangement Solenoid 3) Remove the ETB disengage solenoid [1]. - 1 connector [2] - 1 screw [3] 7.5.6.1 Before Removing the ETB Disengage Solenoid...
  • Page 149: Color Displacement/Image Density Sensor

    Chapter 7 7.5.7 Color Displacement/Image Density Sensor 7.5.7.1 Before Removing the Color Displacement/Density Sensor 0019-5788 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit] 7.5.7.2 Removing the Color Displacement/Density Sensor 0019-5790 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the duplex delivery assembly [1].
  • Page 150: Chapter 8 Pickup And Feed System

    Chapter 8 Pickup and Feed System...
  • Page 151 Contents Contents 8.1 Overview/Configuration ..............................8-1 8.1.1 Overview ...................................... 8-1 8.1.2 Interval Speed Increase Control ..............................8-3 8.2 Other Control ................................. 8-4 8.2.1 Cassette Pickup Mechanism................................. 8-4 8.2.2 Manual Feed Pickup Mechanism ..............................8-5 8.2.3 Skew Correction................................... 8-6 8.2.4 Throughput-down Control................................8-7 8.2.5 Throughput-down Control................................
  • Page 152 Contents 8.5.6 Manual Pickup Roller ................................8-25 8.5.6.1 Before Removing the Manual Feed Pickup Roller............................8-25 8.5.6.2 Removing the Manual Feed Pickup Roller..............................8-25 8.5.7 Manual Pickup Solenoid ................................8-25 8.5.7.1 Before Removing the Manual Feed Pickup Solenoid........................... 8-25 8.5.7.2 Removing the Manual Feed Pickup Solenoid .............................. 8-25 8.5.8 Manual Separation Roller ................................
  • Page 153: Overview/Configuration

    Chapter 8 8.1 Overview/Configuration 8.1.1 Overview 0019-5027 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The pickup/feed system picks up and feeds paper. The machine has two pickup inlets; a cassette and a manual feed tray, and the paper is delivered to the delivery tray. The pickup/feed system consists of the motor, solenoid, and feed roller, etc.
  • Page 154 Chapter 8 The cassette detection switch (SW2) detects the presence/absence of the cassette. The manual feed paper sensor (SR707) and the cassette paper sensor (SR709) detect the presence/absence of the paper in the manual feed tray and the cassette. The reverse sensor (SR706), pre-registration sensor (SR708), registration sensor (SR710), paper loop sensor (SR6001), and fixing delivery sensor (SR6005) detect the arrival and passage of the paper on the feed path.
  • Page 155: Interval Speed Increase Control

    Chapter 8 8.1.2 Interval Speed Increase Control 0020-8556 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c To increase printing speed, the machine increases the speed in an interval which does not affect image formation. The DC controller increases the process speed four times faster when the paper is fed to the reverse assembly. It also increases the process speed of duplex printing four times faster at the duplex feed assembly.
  • Page 156: Other Control

    Chapter 8 8.2 Other Control 8.2.1 Cassette Pickup Mechanism 0019-5028 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The cassette pickup is a mechanism to pick up and feed the paper loaded in the cassette into the machine one by one. The pickup condition is detected by the following sensors or switch.
  • Page 157: Manual Feed Pickup Mechanism

    Chapter 8 8.2.2 Manual Feed Pickup Mechanism 0019-5029 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The manual feed pickup is a mechanism to pick up and feed the paper loaded on the manual feed tray into the machine one by one. The pickup condition is detected by the following sensors or switch.
  • Page 158: Skew Correction

    Chapter 8 8.2.3 Skew Correction 0019-5030 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Before the paper fed from the cassette or manual feed tray is transported to the ETB unit, a skew is corrected. 1) The fed paper comes into contact with the registration shutter at the registration roller assembly. The lead edge of the paper comes into contact with the registration shutter so that the right and left edges of the paper are aligned.
  • Page 159: Throughput-Down Control

    Chapter 8 8.2.4 Throughput-down Control 0020-0387 imageCLASS MF9170c / imageCLASS MF9150c The machine prevents an abnormal temperature increase at the edge of the fixing sleeve by increasing an interval between sheets while keeping the paper feeding speed as needed. Control of the fixing assembly is performed to keep the temperature of the fixing heater higher than the target temperature while the paper is transported so that the target fixing temperature is maintained (print temperature control).
  • Page 160 Chapter 8 Print speed when the throughput down control is executed When the throughput down control is ON, print speed is switched step by step depending on the paper type or the temperature on the edge of the fixing sleeve etc. Following shows the print speed list in case of the minimum throughput.
  • Page 161: Feeding Speed Control

    Chapter 8 T-8-4 The paper is displaced The paper width is The paper is not The paper is displaced Paper displacement to the left side smaller *1 displaced to the right side Paper displacement detection No paper detection is performed Paper detection is performed sensor (SR714) Lower than the...
  • Page 162 Chapter 8 When the paper is warped, the paper loop flag is pressed up, and the paper loop sensor (SR6001) is turned ON. In this case, the DC controller increases the rotational speed of the fixing motor. When the paper loop sensor is turned OFF, the DC controller determines that the level of paper warp is small and decreases the rotational speed of the fixing motor. Fixing pressure roller Fixing sleeve Paper loop sensor...
  • Page 163: Delivery

    Chapter 8 8.2.9 Delivery 0020-0766 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Delivery is a mechanism to deliver the paper transported from the fixing assembly to the delivery tray. The following sensors detect the paper condition. - Fixing delivery sensor (SR6005): Detect the paper delivered from the fixing unit. - Reverse sensor (SR706): Detect the paper transported to the reverse assembly.
  • Page 164 Chapter 8 5) The paper is transported to the delivery tray by the delivery roller. Since the duplexing/delivery flapper is turned down at this point, the feed path toward the duplexing feed assembly is closed. Whether or not the paper has been delivered to the delivery tray is detected by the delivery sensor (SR715). When the paper in the delivery tray reaches the full level, the delivery paper full-level flag comes into contact with the paper, and the full level is detected by the delivery paper full-level sensor (SR713).
  • Page 165: Detection Jams

    Chapter 8 8.3 Detection Jams 8.3.1 Jam Detection Outline 8.3.1.1 Overview 0019-5034 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The machine is provided with several paper sensors at specified positions on the feed path to detect whether the paper exists or whether the paper is transported normally or not.
  • Page 166: Stationary Jams

    Chapter 8 8.3.3 Stationary Jams 8.3.3.1 Pickup Stationary JAM 0019-5039 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The machine determines that the pickup stationary jam has occurred when the registration sensor (SR710) cannot detect the trailing edge of the paper even when approximately 3.2 seconds elapsed after it detected the lead edge of the paper.
  • Page 167: Duplex Feeding

    Chapter 8 8.4 Duplex Feeding 8.4.1 Overview 0019-8980 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The paper fed from the fixing assembly to the reverse unit is sent to the reverse assembly. When delivery is performed, the paper is transported to the delivery tray. When duplexing printing is performed, the paper is sent to the duplexing feed assembly where transfer and fixing are performed for the second side.
  • Page 168: Duplexing Feed Control

    Chapter 8 8.4.2 Duplexing Feed Control 0019-8981 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c In duplexing printing, the machine reverses the paper printed on the first side and again transports it to the pickup position to print the second side. Paper reverse is driven by the reverse motor (M11) and duplexing solenoid (SL5017).
  • Page 169 Chapter 8 Duplexing feed sequence 1) The feed roller driven by the fixing motor (M1) delivers the paper in which fixing was performed on the first side from the fixing unit. 2) When a specified period of time elapses after the fixing delivery sensor (SR6005) detects the lead edge of the paper, the duplexing feed motor (M10) and the reverse motor (M11) rotate forward.
  • Page 170 Chapter 8 5) When a specified period of time elapses after the reverse motor rotates in reverse, the duplexing solenoid (SL5017) is turned ON. When the duplexing/delivery flapper moves up, the feed path toward the duplexing feed assembly is secured. The paper is transported through the duplexing feed assembly.
  • Page 171: Duplexing Pickup Operation

    Chapter 8 8.4.3 Duplexing Pickup Operation 0019-8982 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The machine performs three types of duplexing printing operation depending on the paper size and printing mode. - Single sheet mode: Duplexing print operation of a sheet at one by one - Dual sheet mode: Duplexing print operation of two sheets at once - Alternating complex mode: Duplexing print operation in the condition where three sheets remain in the machine T-8-10...
  • Page 172: Removing The Pickup Feed Unit

    Chapter 8 8.5 Parts Replacement Procedure 8.5.1 Pickup Feed Unit 8.5.1.1 Before Removing the Pickup Feed Unit 0019-5825 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit] 2) Remove the rear cover unit.(page 10-11)Reference [Removing the Rear Cover Unit] 3) Remove the left cover.(page 10-13)Reference [Removing the Left Cov- 4) Remove the right cover.(page 10-11)Reference [Removing the Right...
  • Page 173: Cassette Pickup Roller

    Chapter 8 F-8-24 6) Disconnect the connector [1] and free the harness [2] from the harness guide [3]. F-8-26 8.5.2 Cassette Pickup Roller 8.5.2.1 Before Removing the Cassette Pickup Roller 0020-1875 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit] 8.5.2.2 Removing the Cassette Pickup Roller 0018-9207 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c...
  • Page 174: Pickup Motor

    Chapter 8 F-8-28 F-8-32 5) Disconnect the 3 connectors [1]. 8.5.3 Pickup Motor 8.5.3.1 Before Removing the Pickup Motor 0019-5826 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit] 2) Remove the rear cover unit.(page 10-11)Reference [Removing the Rear Cover Unit] 3) Remove the right cover.(page 10-11)Reference [Removing the Right Cover]...
  • Page 175: Cassette Pickup Solenoid

    Chapter 8 9) Remove the pickup motor [1]. - 2 screws [2] F-8-37 8.5.4 Cassette Pickup Solenoid 8.5.4.1 Before Removing the Cassette Pickup Solenoid 0018-9293 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit] 2) Remove the fixing assembly.(page 9-6)Reference [Removing the Fixing Assembly] 3) Remove the rear cover unit.(page 10-11)Reference [Removing the Rear...
  • Page 176 Chapter 8 9) Fit the rod [1] with the cutoff of the shaft [2] to remove the rod. F-8-41 5) Free the cable from the cable guide [1]. F-8-46 10) Remove the holder [1]. - 2 screws [2] F-8-42 6) Disconnect the 3 connectors [1]. F-8-47 11) Remove the plate [1].
  • Page 177: Cassette Separation Pad

    Chapter 8 8.5.6.2 Removing the Manual Feed Pickup Roller 0018-9209 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the manual feed pickup roller [1]. - 2 claws [2] F-8-50 14) Remove the pickup drive unit [1]. - 2 screws [2] F-8-54 8.5.7 Manual Pickup Solenoid 8.5.7.1 Before Removing the Manual Feed Pickup...
  • Page 178 Chapter 8 F-8-58 5) Free the cable from the cable guide [1]. F-8-59 6) Disconnect the 3 connectors [1]. F-8-55 2) Remove the cassette guide [1]. - 1 claw [2] F-8-60 7) Remove the cable guide [1]. - 1 screw [2] - 2 claws [3] F-8-56 3) Remove the right hinge [1].
  • Page 179: Manual Separation Roller

    Chapter 8 9) Fit the rod [1] with the cutoff of the shaft [2] to remove the rod. F-8-67 F-8-63 14) Remove the pickup drive unit [1]. 10) Remove the holder [1]. - 2 screws [2] - 2 screws [2] F-8-68 F-8-64 15) Remove the plate [1].
  • Page 180: Duplexing Feed Motor

    Chapter 8 1) Remove the reversal guide [1]. - 1 screw [2] - 2 claws [3] F-8-71 8.5.9 Duplexing Feed Motor 8.5.9.1 Before Removing the Duplex Feed Motor F-8-73 0019-6132 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit] Points to Note At Installation 2) Remove the rear cover unit.(page 10-11)Reference [Removing the Rear Unless the reverse guide is installed correctly, a jam may occur.
  • Page 181 Chapter 8 F-8-74 3) Remove the reversal unit [1]. - 3 connectors [2] - 2 connectors (binding) [3] - 2 screws [4] F-8-75 Points to Note at Installation - Before installing the reverse unit [1] to the host machine, be sure to align the gear unit [2] with the coupling [3] of the reverse unit.
  • Page 182: Reverse Motor

    Chapter 8 1) Remove the belt [2] from the motor gear [1]. F-8-76 2) Remove the reversal motor [1]. - 2 screws [2] F-8-77 8.5.12 Reverse Solenoid 8.5.12.1 Before Removing the Reversal Solenoid 0019-5832 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit] 2) Remove the fixing assembly.(page 9-6)Reference [Removing the Fixing Assembly]...
  • Page 183 Chapter 8 F-8-80 F-8-78 2) Disconnect the connector [1] and free the harness [2] from the guide [3]. 3) Remove the reversal solenoid unit [4]. - 1 screw [5] - 1 solenoid pin [6] - 1 solenoid arm [7] F-8-79 4) Remove the reversal solenoid [2] from the fixing plate [1].
  • Page 184: Chapter 9 Fixing System

    Chapter 9 Fixing System...
  • Page 185 Contents Contents 9.1 Overview/Configuration ..............................9-1 9.1.1 Overview ...................................... 9-1 9.2 Various Control Mechanisms ............................9-2 9.2.1 Controlling the Temperature of the Fixing Unit .......................... 9-2 9.2.1.1 Fixing Temperature Control....................................9-2 9.2.1.2 Throughput Down Control....................................9-3 9.2.2 Fixing Pressurizing/Release Control............................9-4 9.2.2.1 Fixing Sleeve Pressuring/releasing Control..............................9-4 9.3 Protection Function................................
  • Page 186: Overview/Configuration

    Chapter 9 9.1 Overview/Configuration 9.1.1 Overview 0019-5046 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The ceramic heater fixing method is adopted on the fixing assembly of this machine. Temperature control of the fixing assembly is performed by the fixing control circuit and the fixing heater safety circuit according to the commands from CPU (IC1001) on DC controller PCB.
  • Page 187: Various Control Mechanisms

    Chapter 9 9.2 Various Control Mechanisms 9.2.1 Controlling the Temperature of the Fixing Unit 9.2.1.1 Fixing Temperature Control 0019-5047 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The fixing temperature control is to detect the surface temperature of the fixing sleeve and the fixing heater, and to maintain the fixing heater temperature at targeted value according to the detected results.
  • Page 188: Throughput Down Control

    Chapter 9 9.2.1.2 Throughput Down Control 0020-0393 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c This control is to prevent an overheating at both ends of the fixing sleeve by keeping the required speed for paper feeding and, in addition, extending the pickup interval.
  • Page 189: Fixing Pressurizing/Release Control

    Chapter 9 9.2.2 Fixing Pressurizing/Release Control 9.2.2.1 Fixing Sleeve Pressuring/releasing Control 0020-0962 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c This machine controls the pressure between the fixing sleeve and the fixing pressure roller as needed to prevent the fixing failure and the breakdown of fixing as- sembly (see MEMO).
  • Page 190: Protection Function

    Chapter 9 9.3 Protection Function 9.3.1 Overview 0019-5048 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c This machine has the 3 types of protective functions for fixing assembly. If an overheating is detected at the fixing assembly, those protective functions stop the power to the fixing heater. Protective function by CPU If the voltage of the fixing main thermistor temperature detection signal (MAINTH) is approx.
  • Page 191: Parts Replacement Procedure

    Chapter 9 9.4 Parts Replacement Procedure 9.4.1 Fixing Unit 9.4.1.1 Removing the Fixing Assembly 0018-9295 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Points to Note At Operation When removing the fixing assembly, perform the operation after the fixing assembly is surely cooled. The fixing assembly just after printing may cause burn injury.
  • Page 192 Chapter 9 F-9-7 F-9-11 2) Remove the screw [1]. F-9-12 F-9-8 3) Remove the claw [1] and the claw [2] in the order, and remove the cover [3]. When removing the guide, be sure to set a protection sheet [1] around the fixing sleeve to prevent damage/scar.
  • Page 193 Chapter 9 8) Remove the connector assembly [1]. - 1 screw [2] - 1 claw [2] F-9-20 F-9-15 14) Remove the 2 parts of [1] from the side plate to remove the unit [2]. 9) Remove the screw [1]. - 2 claws [3] F-9-21 F-9-16 15) Remove the spring holder [1] to remove the spring [2].
  • Page 194: Fixing Drive Unit

    Chapter 9 - 1 claw [2] - 3 connectors [3] F-9-25 19) Disconnect the connector [1]. F-9-30 - Do not disassemble the fixing sleeve unit in the field. Disassembling it may cause a functional fault. 9.4.3 Fixing Drive Unit 9.4.3.1 Before Removing the Fixing Drive Unit 0019-5957 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit]...
  • Page 195 Chapter 9 F-9-33 5) Remove the 4 screws [1] and the screw (binding) [2] to remove the harness guide cover [3]. F-9-31 3) Remove the cover [1]. - 1 screw [2] F-9-34 6) Disconnect the connector [1] and free the harness [2] from the harness guide [3].
  • Page 196 Chapter 9 F-9-35 8) Remove the harness guide [1]. - 1 claw [2] 9) Remove the screw [3], move the interlock switch unit [4] in the direction of the arrow and release the hook [5] to remove the interlock switch unit [4].
  • Page 197: Fixing Motor

    Chapter 9 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit] 2) Remove the fixing assembly.(page 9-6)Reference [Removing the Fixing Assembly] 3) Remove the rear cover unit.(page 10-11)Reference [Removing the Rear Cover Unit] 4) Remove the ADF Unit + Reader Unit.(page 4-8)Reference [Removing the ADF Unit + Reader Unit] 5) Remove the left cover.(page 10-13)Reference [Removing the Left Cov- 6) Remove the right cover.(page 10-11)Reference [Removing the Right...
  • Page 198 Chapter 9 F-9-42 5) Disconnect the connector [1]. F-9-44 8) Remove the plate [1]. - 2 screws [2] F-9-43 6) Move the harness guide [1] in the direction of the arrow [A] to remove the hook [2] in the direction of the arrow [B]. 7) Remove the harness guide [1].
  • Page 199 Chapter 9 F-9-46 10) Remove the 3 gears [1] F-9-47 11) Remove the fixing motor [1]. - 1 screw (black) [2] - 1 screw [3] F-9-48 9-14...
  • Page 200: Chapter 10 External And Controls

    Chapter 10 External and Controls...
  • Page 201 Contents Contents 10.1 DC Controller ................................10-1 10.1.1 Overview ....................................10-1 10.1.2 Operation of Each Block ................................10-2 10.1.3 Fan/Motor Control..................................10-2 10.1.4 Drum motor failure detection..............................10-3 10.1.5 ETB motor failure detection..............................10-3 10.1.6 Fixing motor failure detection..............................10-3 10.1.7 Main Unit Fan Failure Detection .............................
  • Page 202 Contents 10.5.9.2 Removing the Laser Scanner Cover ................................. 10-16 10.5.10 Upper Frame Unit ................................10-18 10.5.10.1 Before Removing the Upper Frame Unit..............................10-18 10.5.10.2 Removing the Upper Frame Unit ................................10-18 10.5.11 Operation Panel Unit................................10-21 10.5.11.1 Removing the Control Panel Unit ................................10-21 10.5.11.2 Procedure after Replacing the Control Panel............................
  • Page 203: Dc Controller

    Chapter 10 10.1 DC Controller 10.1.1 Overview 0020-2652 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The CPU in the DC controller PCB controls the operational sequence of the machine. 1) When the power switch of the machine is turned ON, DC power is supplied from the low-voltage power PCB to the DC controller PCB. 2) The CPU in the DC controller PCB starts to control the printer operation.
  • Page 204: Operation Of Each Block

    Chapter 10 10.1.2 Operation of Each Block 0020-2653 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c CPU (IC1001) The CPU is a 16-bit single-chip processor with built-in ROM and RAM. It controls the following printer operation according to the control program stored in the ROM. - Sequence control of the printer engine - Control of the ASIC - Control of the fixing assembly...
  • Page 205: Drum Motor Failure Detection

    Chapter 10 10.1.4 Drum motor failure detection 0020-2655 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The DC controller determines that a failure occurred in the drum motors (M6 to 9) in any of the following cases. The machine stops operation and displays "E012 (Drum motor error)"...
  • Page 206: Control Panel

    Chapter 10 10.2 Control Panel 10.2.1 Overview 0020-9234 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Control panel on the host machine consists of the following PCBs and LCD. Following is the main function of the control panel. - LCD display - Turning ON the control panel LED - Entry with hard keys, wheel and volume - Interface control for the USB memory, CF card and SD/MS card...
  • Page 207: Counter

    Chapter 10 10.3 Counter 10.3.1 Overview 0020-9640 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The machine is equipped with counters that indicate the counts of output according to types of printers. These counters are indicated in response to a press on the Check key on the control panel, and they operate as follows (as set at time of shipment from the factory): T-10-2 Model Counter 1...
  • Page 208: Power Supply

    Chapter 10 10.4 Power Supply 10.4.1 Power Supply 10.4.1.1 Low-voltage Power Unit 0020-2570 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The low-voltage power PCB is to convert AC into DC covering the DC loads. Low-voltage power PCB Fixing unit FU3901 Front cover detection switch Fuse...
  • Page 209: Protection Function

    Chapter 10 10.4.2 Protection Function 10.4.2.1 Protective Function 0020-2571 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The low-voltage power circuit has protective function against overcurrent and overvoltage. Once there flows an excessive current accidentally to the load side for some trouble such as a short-circuit problem, or overvoltage occurs, it automatically cuts off the output voltage to prevent failures in the low-voltage power circuit.
  • Page 210 Chapter 10 Sleep 2 (1W sleep) Network, Power ON status Alarm, Sleep 2 conditions Power OFF 1W sleep status FAX reception, are met. Hook, Power OFF status Soft switch detection Power OFF Power ON etc. [1] [4] [8] Power Saving 1 [1] [2]* Power Saving 3 Sleep 1...
  • Page 211: Parts Replacement Procedure

    Chapter 10 10.5 Parts Replacement Procedure 3) Remove the relay connector [1] and the harness [2] from the harness guide [3]. 10.5.1 Front Cover 10.5.1.1 Before Removing the Front Cover Unit 0018-9092 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit] 2) Remove the rear cover unit.(page 10-11)Reference [Removing the Rear Cover Unit]...
  • Page 212: Front Upper Cover 1

    Chapter 10 10.5.2.2 Removing Front Upper Cover 1 0019-6873 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Pull the delivery tray [1] out. 2) Move the delivery tray [1] in the direction of the arrow, and release the 2 projections [2] from the 2 claws [3] of the delivery tray cover to remove the delivery tray.
  • Page 213: Rear Cover

    Chapter 10 F-10-13 10.5.3 Rear Cover 10.5.3.1 Removing the Rear Cover Unit 0018-9094 F-10-15 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 10.5.4 Right Cover 1) Remove the reader hinge cover [1]. - 4 claws [2] 10.5.4.1 Before Removing the Right Cover 0018-9095 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit]...
  • Page 214 Chapter 10 F-10-17 3) Open the ADF unit + reader unit [1]. F-10-20 6) Bend the right cover [1] and remove the protrusion [2] in the direction of the arrow [A]. F-10-18 Points to note at work Be sure not to close the ADF unit + reader unit hastily. If closing the ADF unit + reader unit hastily, the impact can cause damage.
  • Page 215: Left Cover

    Chapter 10 Points to note at work Be sure not to close the ADF unit + reader unit hastily. If closing the ADF unit + reader unit hastily, the impact can cause damage. Also be careful not to get your hands caught between the ADF unit + reader unit and the host machine.
  • Page 216: Delivery Tray Cover

    Chapter 10 10.5.6.2 Removing the Delivery Tray Cover 0019-5965 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Pull the delivery tray [1] out. 2) Move the delivery tray [1] in the direction of the arrow and release the 2 projections [2] from the 2 claws [3] of the delivery tray cover to remove.
  • Page 217: Power Station Cover

    Chapter 10 10.5.7 Power Station Cover 10.5.7.1 Before Removing the Electrical Components Cover 0019-5925 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit] 2) Remove the rear cover unit.(page 10-11)Reference [Removing the Rear Cover Unit] 3) Remove the left cover.(page 10-13)Reference [Removing the Left Cov- 10.5.7.2 Removing the Electrical Components Cover...
  • Page 218: Laser Scanner Cover

    Chapter 10 1) Remove the harness guide [1]. - 1 cable clip [2] - 1 cable holder [3] - 1 flat cable [4] - 4 screws [5] F-10-34 2) Remove the controller box [1]. - 6 screws [2] F-10-36 2) Remove the right frame reinforcement plate [1]. - 8 screws [2] F-10-35 10.5.9 Laser Scanner Cover...
  • Page 219 Chapter 10 F-10-37 3) Open the 4 wire saddles [1] and free the 5 harnesses [3] from the 2 harness guide mouths [2]. F-10-39 5) Remove the left frame reinforcement plate [1]. - 6 screws [2] F-10-38 4) Remove the harness guide [1]. - 1 screw [2] F-10-40 6) Remove the 8 screws [2] from the laser scanner cover [1].
  • Page 220: Upper Frame Unit

    Chapter 10 10.5.10 Upper Frame Unit 10.5.10.1 Before Removing the Upper Frame Unit 0019-5936 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit] 2) Remove the fixing assembly.(page 9-6)Reference [Removing the Fixing Assembly] F-10-41 3) Remove the rear cover unit.(page 10-11)Reference [Removing the Rear...
  • Page 221 Chapter 10 F-10-43 2) Remove the screw [2] on the backside of the flat cable [1]. F-10-45 4) Remove the harness guide [1]. - 1 screw [2] F-10-44 3) Remove the harness guide [1]. 10-19...
  • Page 222 Chapter 10 F-10-48 7) Move the 2 reader fixing arms [1] to the rear side. F-10-49 8) Open the fixing delivery cover [1] to remove the left upper front inner cov- er [2] and the right upper front inner cover [3]. F-10-46 5) Remove the 6 screws [1] (on the left side of the upper frame unit).
  • Page 223: Operation Panel Unit

    Chapter 10 F-10-52 10.5.11 Operation Panel Unit 10.5.11.1 Removing the Control Panel Unit 0018-9105 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the panel stand left cover [1] and the panel stand right cover [2]. - 1 claw [3] 10.5.11.2 Procedure after Replacing the Control Panel 0021-0350 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c...
  • Page 224: Ncu Board

    Chapter 10 3) Press the [OK] key. The flicker adjustment pattern (a pattern with horizontal stripes) is dis- played in the LCD. Pressing the right/left arrow keys, search for the area with the minimum flicker. F-10-57 4) Press the [OK] key. 5) Press the [Back] key.
  • Page 225: Procedure After Replacing The Dc Controller Pcb

    Chapter 10 1) Remove the memory controller PCB [1]. - 4 connectors [2] - 3 screws [3] F-10-59 2) Remove the DC controller PCB [1]. - 4 screws [2] F-10-61 10.5.15 Duplexing Driver PCB 10.5.15.1 Before Removing the Duplex Driver PCB 0019-5742 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit]...
  • Page 226: Removing The Low Voltage Power Supply Pcb

    Chapter 10 1100mm 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit] 2) Remove the fixing assembly.(page 9-6)Reference [Removing the Fixing Assembly] 3) Remove the rear cover unit.(page 10-11)Reference [Removing the Rear Cover Unit] 4) Remove the ADF Unit + Reader Unit.(page 4-8)Reference [Removing the ADF Unit + Reader Unit] 5) Remove the left cover.(page 10-13)Reference [Removing the Left Cov- 6) Remove the right cover.(page 10-11)Reference [Removing the Right...
  • Page 227: High-Voltage Power Supply Pcb

    Chapter 10 5) Remove the Off Hook PCB. (only of the machine with FAX)(page 10- 25)Reference [Removing the Off Hook PCB] 10.5.17.2 Removing the High Voltage Power Supply PCB 0019-5741 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Disconnect the 2 flat cables [1]. F-10-68 2) Remove the high voltage power supply PCB [1].
  • Page 228: Cooling Fan

    Chapter 10 - 1 hook [4] F-10-72 3) Remove the grounding spring [1]. F-10-70 10.5.19 Cooling Fan 10.5.19.1 Before Removing the Cooling Fan 0020-3355 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit] 2) Remove the rear cover unit.(page 10-11)Reference [Removing the Rear Cover Unit] 3) Remove the left cover.(page 10-13)Reference [Removing the Left Cov-...
  • Page 229 Chapter 10 F-10-75 F-10-76 2) Remove the duplex fan unit [1]. - 1 connector [2] - 2 screws [3] F-10-77 F-10-78 3) Remove the fan cover [1] to remove the duplex fan. - 3 claws [2] F-10-79 10-27...
  • Page 230: Chapter 11 Maintenance And Inspection

    Chapter 11 Maintenance and Inspection...
  • Page 231 Contents Contents 11.1 Periodically Replaced Parts ............................11-1 11.1.1 Periodically Replaced Parts..............................11-1 11.2 Consumables................................11-1 11.2.1 Expected Service Life of Consumable Parts ..........................11-1 11.3 Periodical Service ..............................11-1 11.3.1 Periodic Service..................................11-1...
  • Page 232: Periodically Replaced Parts

    Chapter 11 11.1 Periodically Replaced Parts 11.1.1 Periodically Replaced Parts 0019-4954 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c This machine does not have parts that require periodical replacement. 11.2 Consumables 11.2.1 Expected Service Life of Consumable Parts 0019-4956 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Some parts of the machine are likely to require replacement once or more because of wear or damage.
  • Page 233: Chapter 12 Measurement And Adjustments

    Chapter 12 Measurement and Adjustments...
  • Page 234 Contents Contents 12.1 Scanning System................................ 12-1 12.1.1 Procedure after Replacing the Copyboard Glass........................12-1 12.1.2 Procedure after Replacing the Reader Unit..........................12-1 12.2 Fixing System ................................12-1 12.2.1 Checking the Nip Width (fixing pressure roller) ........................12-1 12.3 Electrical Components............................... 12-1 12.3.1 Procedure after Replacing the DC controller PCB........................
  • Page 235: Scanning System

    Chapter 12 12.1 Scanning System 12.1.1 Procedure after Replacing the Copyboard Glass Feed direction 0020-1580 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c After replacing the copyboard glass, enter the correction values (X, Y, Z) of the standard white plate which are indicated on the back of the new copy- board glass in the service mode.
  • Page 236: Procedure After Replacing The Control Panel

    Chapter 12 1. Backup the user data 3) Press the [OK] key. Import the user data using the remote UI. The flicker adjustment pattern (a pattern with horizontal stripes) is dis- played in the LCD. Pressing the right/left arrow keys, search for the area with the minimum flicker.
  • Page 237: Chapter 13 Correcting Faulty Images

    Chapter 13 Correcting Faulty Images...
  • Page 238 Contents Contents 13.1 Initial Checkup................................13-1 13.1.1 Initial Check ..................................... 13-1 13.2 Test Printing................................13-2 13.2.1 Test Printing ..................................... 13-2 13.3 Outline of Electrical Components ..........................13-6 13.3.1 Clutch/Solenoid..................................13-6 13.3.1.1 Solenoids........................................13-6 13.3.2 Motor/Fan....................................13-7 13.3.2.1 Motors ......................................... 13-7 13.3.2.2 Fans ..........................................
  • Page 239: Initial Checkup

    Chapter 13 13.1 Initial Checkup 13.1.1 Initial Check 0019-5081 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Check the following items before you diagnose malfunction. If any failure is found, a service engineer is to clear the problem and to give the instruction to a user. Installation environment - The power voltage is -/+10 % of the rated voltage.
  • Page 240: Test Printing

    Chapter 13 13.2 Test Printing 13.2.1 Test Printing 0020-3162 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c You can check with test prints if the printer engine works normally. When pressing the test print switch at the DC controller PCB with the machine in standby mode, a test pattern (horizontal lines) is printed. This test print can be executed without the main controller PCB.
  • Page 241 Chapter 13 2) Remove the rear cover unit [1]. - 2 screws [2] - 9 claws [3] F-13-3 3) Remove the 3 screws [1]. F-13-4 13-3...
  • Page 242 Chapter 13 4) Move the left cover [2] to the position where the 2 screws [1] of the power unit cover can be removed. F-13-5 5) Remove the power unit cover [1]. - 12 screws [2] - 1 terminal [3] F-13-6 13-4...
  • Page 243 Chapter 13 6) Remove the off-hook unit [1] without disconnecting the connector. - 3 screws (TP; M3X6) [2] - 1 hook [3] - 1 hook [4] Points to Note When Removing the Off-Hook Unit Be careful not to pull strongly the cable connected with the off-hook unit and break it. It is enough to move the off-hook unit downward so that the test print switch at the rear side can be seen.
  • Page 244: Outline Of Electrical Components

    Chapter 13 13.3 Outline of Electrical Components 13.3.1 Clutch/Solenoid 13.3.1.1 Solenoids 0019-5061 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c SL5016 SL5015 SL5017 SL5014 SL5011 SL5013 SL5012 F-13-9 T-13-1 Notation Name SL5011 ETB disengagement solenoid SL5012 cassette pickup solenoid SL5013 manual pickup solenoid SL5014 YMC developing disengagement solenoid...
  • Page 245: Motor/Fan

    Chapter 13 13.3.2 Motor/Fan 13.3.2.1 Motors 0019-5062 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c F-13-10 T-13-2 Notation Name fixing motor scanner motor 1 scanner motor 2 pickup motor ETB motor M drum motor C drum motor Y drum motor Bk drum motor duplexing feed motor reverse motor...
  • Page 246: Fans

    Chapter 13 13.3.2.2 Fans 0019-5064 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c F-13-11 T-13-3 Notation Name main unit fan duplex fan 13-8...
  • Page 247: Sensor

    Chapter 13 13.3.3 Sensor 13.3.3.1 Sensors 0019-9003 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c SR718 SR719 SR717 SR711 SR704 SR703 SR702 SR701 SR712 SR716 F-13-12 T-13-4 Notation Name M drum HP sensor SR701 C drum HP sensor SR702 Y drum HP sensor SR703 Bk drum HP sensor SR704...
  • Page 248 Chapter 13 SR706 SR6001 SR705 SR713 SR715 SR6005 SR720 SR707 SR714 SR709 SR710 SR708 F-13-13 T-13-5 Notation Name fixing pressure release sensor SR705 reverse sensor SR706 manual feed paper sensor SR707 pre-registration sensor SR708 SR709 cassette paper sensor registration sensor SR710 delivery paper full-level sensor SR713...
  • Page 249: Switch

    Chapter 13 13.3.4 Switch 13.3.4.1 Switches, Speaker, and Thermistors 0019-9004 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c F-13-14 T-13-6 Notation Name front cover detection switch cassette detection switch delivery cover detection switch power switch 13-11...
  • Page 250 Chapter 13 LAMP2 LAMP1 F-13-15 T-13-7 Notation Name fixing heater LAMP1 document lamp LAMP2 document lamp speaker fixing main thermistor fixing sub thermistor fixing thermal switch TP1A 13-12...
  • Page 251: Pcbs

    Chapter 13 13.3.5 PCBs 13.3.5.1 PCBs 0019-5065 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 13-13...
  • Page 252 Chapter 13 PCB9 PCB14 PCB15 PCB12 PCB16 PCB11 PCB29 PCB7 PCB5 PCB30 PCB4 PCB6 PCB3 F-13-16 T-13-8 Notation Name Notation Name Notation Name PCB3 pickup relay PCB PCB4 memory controller PCB PCB5 fixing relay PCB PCB6 high-voltage power PCB PCB7 laser driver PCB PCB9 reverse driver PCB...
  • Page 253 Chapter 13 PCB13 PCB8 PCB17 PCB1 PCB26 /27 PCB2 PCB28 PCB18 PCB19 / 20 / 21 PCB24 F-13-17 T-13-9 Notation Name PCB1 DC controller PCB PCB2 driver PCB PCB8 low-voltage power PCB PCB13 CCD relay PCB PCB17 control panel relay PCB PCB18 main controller PCB PCB19...
  • Page 254: Location Of Convectors

    Chapter 13 13.3.6 Location of Convectors 13.3.6.1 Location of Connectors 0020-1529 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 55,59 54,58 53,57 52,56 F-13-18 13-16...
  • Page 255 Chapter 13 T-13-10 Notation J No. Electric parts name Relay connector J No. Notation Electric parts name Remarks PCB1 J1001 DC controller PCB J8112 PCB18 main controller PCB PCB1 J1002 DC controller PCB J6007 J6001 PCB6 fixing relay PCB PCB1 J1004 DC controller PCB J5027...
  • Page 256 Chapter 13 F-13-19 13-18...
  • Page 257 Chapter 13 T-13-11 Relay Notation J No. Electric parts name J No. Notation Electric parts name Remarks connector PCB2 J203 driver PCB J5023 front cover detection switch PCB2 J203 driver PCB J5023 delivery cover detection switch PCB2 J206 driver PCB J5010 J5002 ETB motor...
  • Page 258 Chapter 13 34, 37 33, 42 F-13-20 13-20...
  • Page 259 T-13-12 Relay Notation J No. Electric parts name J No. Notation Electric parts name Remarks connectro PCB9 J802 reverse driver PCB J5016 J706 SR706 reverse sensor PCB9 J802 reverse driver PCB J5016 J711 SR713 delivery paper full-level sensor PCB9 J802 reverse driver PCB J5016 J712...
  • Page 260: Chapter 14 Error Code

    Chapter 14 Error Code...
  • Page 261 Contents Contents 14.1 Error Code Table ............................... 14-1 14.1.1 Error Code Table..................................14-1 14.2 Error Code Details ..............................14-2 14.2.1 Error Code Details..................................14-2 14.3 Jam Code ................................... 14-8 14.3.1 Jam Code (main body) ................................14-8 14.3.2 Jam Code (ADF) ..................................14-8 14.4 Alarm Code................................
  • Page 262: Error Code Table

    Chapter 14 14.1 Error Code Table 14.1.1 Error Code Table 0020-4434 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c T-14-1 Error Code Detail Error Name/Explanation of Error Code E000 0000 Fixing temperature abnormal rise E001 0000 Fixing unit temperature rise detection (by main thermistor) 0001 Fixing unit temperature rise detection (by sub thermistor) E003...
  • Page 263: Error Code Details

    Chapter 14 14.2 Error Code Details 14.2.1 Error Code Details 0020-4452 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c T-14-2 Code Description Action E000 Error in start-up of fixing assembly 0000 Description - Check of the connector of the low-voltage power supply PCB When 1 sec passed after energization of the heater, the detected temperature of the - Replacement of fixing sleeve unit main thermistor is not 5 deg C or more (0 deg C at power on).
  • Page 264 Chapter 14 T-14-3 Code Description Action E012 Error in activation of motor 0000 Description - Replacement of ETB motor When 3.5 sec passed after activation of ETB motor, the cycle of ETB motor speed - Replacement of DC controller PCB detection signal does not become its specified value.
  • Page 265 Chapter 14 Code Description Action E020 Error in density sensor 0000 Description - Replacement of ETB unit Cannot receive enough light when detecting image density. - Error in high-voltage joint (Check high-voltage joint for each color, and each joint to high-voltage PCB) Cause - Replacement of DC controller Dirt on density sensor, error in density sensor, error in DC controller PCB, error in...
  • Page 266 Chapter 14 T-14-4 Code Description Action E024 Toner level sensor failure 0000 Description - Replace toner cartridge Failure output from the toner level sensor (Yellow). - Replace memory controller PCB - Replace DC controller PCB Cause Memory controller PCB assembly fault, DC controller PCB assembly fault, toner cartridge fault.
  • Page 267 Chapter 14 Code Description Action 0000 Internal communication error - Replace DC controller PCB - Replace video controller PCB E198 DC controller memory malfunction 0000 Description - Replace DC controller PCB assembly DC controller memory malfunction. Cause DC controller PCB assembly fault. 14-6...
  • Page 268 Chapter 14 T-14-5 Code Description Action E202 Reader HP sensor fault 0001 Reader HP outward fault - Replace reader HP sensor. The CCD unit moves backward, but does not move to the home position. - Replace reader motor sensor. - Replace reader unit. 0002 Reader HP homeward fault The CCD unit moves forward, but does not move to the home position.
  • Page 269: Jam Code

    Chapter 14 14.3 Jam Code 14.3.1 Jam Code (main body) 0020-4442 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c T-14-6 Code Name Sensor No. Description 0104 Delay jam in paper pickup section SR710 The registration sensor cannot detect the leading edge of paper from the moment paper pickup starts to the moment the jam detection time is reached.
  • Page 270: Alarm Code

    Chapter 14 14.4 Alarm Code 14.4.1 Alarm Code (ADF) 0020-9550 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c T-14-8 Code Name Sensor No. Description 0003H Separation NG alarm SR719 The leading edge of paper does not reach the ADF paper trailing edge sensor (SR719) within 3.2 sec after the ADF pickup motor starts positive rotation.
  • Page 271 Chapter 14 Tx/Rx Description ##0237 [Rx] decoding error has occurred. ##0261 [Tx] system error has occurred. ##0282 [Tx] at time of transmission, the procedural signal has been transmitted more than specified. ##0283 [Tx] at time of transmission, the procedural signal has been transmitted more than specified. ##0288 [Tx] after transmission of EOP, a signal other than PIN, PIP, MCF, RTP, or RTN has been received.
  • Page 272: Chapter 15 Special Management Mode

    Chapter 15 Special Management Mode...
  • Page 273 Contents Contents 15.1 Overview..................................15-1 15.1.1 Preface...................................... 15-1 15.1.2 Entering the Special Management Mode ..........................15-1 15.1.3 Menu List ....................................15-2 15.2 Troubleshooting ................................. 15-3 15.2.1 Pre-Check ....................................15-3 15.2.2 User Request .................................... 15-3 15.2.3 Paper Error ....................................15-3 15.2.4 Image error ....................................15-3...
  • Page 274: Overview

    Chapter 15 15.1 Overview 15.1.1 Preface 0020-4716 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Special management mode is the mode for users to solve a problem by themselves when an error occurs. However, information about this mode is not disclosed to users. Operators at call center ask users the occurrence situation and if they decide that users can solve this problem, they tell uses to use a measure with this mode to solve the problem by themselves.
  • Page 275: Menu List

    Chapter 15 15.1.3 Menu List 0020-4718 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c T-15-1 Maintenance Applicable Setting value Special management function Control details code mode (*default) 27767 High-resisting paper mode All modes OFF * Lower the final output value of transfer bias by 250V. (Only if the high-humidity transparency mode or high-humidity glossy film mode is not specified.) 27267...
  • Page 276: Troubleshooting

    Chapter 15 15.2 Troubleshooting 15.2.1 Pre-Check 0020-4719 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Firstly, check that the paper is used within the specifications (type, weight, size, direction, pickup position). If it is not within the specifications, tell users the correct usage. 15.2.2 User Request 0020-5010 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c...
  • Page 277 Chapter 15 The following samples show the expected errors in A4 or letter size medias. T-15-4 Image ghost on the non-image area Measure Execute [Hot offset prevention mode]. <Special management mode> Main menu > Additional function > 3 > 6 > 9 > * > 35607 <Service mode>...
  • Page 278 Chapter 15 Fine lines in feeding direction Supplement When printing images, vertical thin lines may appear on the image. Measure Execute [Foggy image prevention mode]. <Special management mode> Main menu > Additional function > 3 > 6 > 9 > * > 14682 <Service mode>...
  • Page 279 Chapter 15 10 When projecting the transparency, image looks dark. Supplement When using the transparency printed with this machine with a projector, image may look dark. Measure Execute [Transparency permeability correction mode]. <Special management mode> Main menu > Additional function > 3 > 6 > 9 > * > 25200 <Service mode>...
  • Page 280: Chapter 16 Service Mode

    Chapter 16 Service Mode...
  • Page 281 Contents Contents 16.1 Outline ..................................16-1 16.1.1 Service Mode Configuration ..............................16-1 16.1.2 Entering/Selecting Service Mode............................. 16-3 16.1.3 Exiting Service Mode................................16-3 16.1.4 Service Mode Backup ................................16-3 16.1.5 Service Mode Screen Operation............................... 16-4 16.2 COPIER ..................................16-6 16.2.1 DISPLAY ....................................16-6 16.2.1.1 DISPLAY List ......................................
  • Page 282: Outline

    Chapter 16 16.1 Outline 16.1.1 Service Mode Configuration 0019-9714 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The service mode screen transition is shown below. User screen 1) Main menu key 2) 2 key Back key 3) 8 key 4) Main menu key Initial screen Back key Main item screen...
  • Page 283 Chapter 16 The machine's service mode is categorized in to the following modes. Service mode COPIER Service mode for a copier machine DISPLAY Status display mode I/O display mode ADJUST Adjustment mode FUNCTION Operation/Checking mode OPTION Machine settings mode COUNTER Counter mode FEEDER Service mode for ADF...
  • Page 284: Entering/Selecting Service Mode

    Chapter 16 16.1.2 Entering/Selecting Service Mode 0019-9715 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c When making a copier machine execute an operation using the service mode, be sure to remove the cable from the external controller or the network cable before entering the service mode.
  • Page 285: Service Mode Screen Operation

    Chapter 16 16.1.5 Service Mode Screen Operation 0019-9720 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Initial/Main/Intermediate screen To select the item: key or scroll wheel To display the items on the lower layer: OK key C O P I E R To display the items on the upper layer: Back key F E E D E R...
  • Page 286 Chapter 16 Switch selection screen To select the switch: key or scroll wheel To display the entry screen of switch setting value: OK key To display the small screen: Back key Entry screen of switch setting value To select the setting item: To switch the setting value: Right any key (0 or 1 can be selected) To change the setting:...
  • Page 287: Copier

    Chapter 16 16.2 COPIER 16.2.1 DISPLAY 16.2.1.1 DISPLAY List 0020-2011 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c <VERSION> T-16-1 COPIER > DISPLAY > VERSION Sub item Description MAIN Display of the version/checksum/date of Bootable (product program area) BOOT Display of the version/checksum/date of BootROM (boot program area) OPROM Not used ECONT...
  • Page 288 Chapter 16 T-16-4 COPIER > ADJUST > ADJ-XY Sub item Description ADJ-X Adjustment of the optical image leading edge position (image reading start position in the sub-scanning direction) [When used] Incorrect copyboard reading position in the sub scanning direction. [Adjustment method] - When the no-image width is larger than the standard value, decrease the setting value.
  • Page 289 Chapter 16 COPIER > ADJUST > CCD Sub item Description DFTAR-G Entry of the shading target value when DF is used (GREEN color) (Normal document reading position) Make the following adjustment using this item. [When used] An image failure occurred after execution of ADF white level adjustment (COPIER>FUNCTION>CCD>DF-WLVL1/DF-WLVL2) (caused by a dirt on the chart, etc.).
  • Page 290 Chapter 16 COPIER > ADJUST > VIFADJ Sub item Description CRG-BS-M Charging bias setting value (M) [When used] Low/high image density or fogging occurs but the problem cannot be solved by changing the density setting and performing special printing process. [Adjustment method] - When fogging occurs, it may be eliminated by increasing the setting value.
  • Page 291 Chapter 16 COPIER > ADJUST > VIFADJ Sub item Description FRT-TS-M Transfer bias front side setting value (M) [When used] An image failure occurs depending on the type or condition of the paper AND the problem cannot be eliminated by performing special printing process.
  • Page 292: Function

    Chapter 16 COPIER > ADJUST > VIFADJ Sub item Description PGR-YMCK Setting value of transfer bias between sheets (Y, M, C, Bk) [When used] The density of the entire area of 70 to 80mm from the leading edge of the sheet is low/high, or there are an infinite number of white or black spots in an image when the entire print is halftone, etc.
  • Page 293 Chapter 16 COPIER > FUNCTION > INSTALL Sub item Description CNT-DATE Setting of the date and time to start sending counter information to the server Set the date and time to start sending counter information to the server using the E-RDS third-party extended function. Refer to the date and time setting in the user mode.
  • Page 294 Chapter 16 COPIER > FUNCTION > CLEAR Sub item Description CARD Clearing of the connection information of a new card reader equipment Clear data related to card IDs (department). Operation method 1) Set the department management in user registration to OFF. 2) Execute this item.
  • Page 295 Chapter 16 Not used <SYSTEM> T-16-14 COPIER > FUNCTION > SYSTEM Sub item Description DOWNLOAD Switching to the download mode <HV-TR> Not used <CCD> T-16-15 COPIER > FUNCTION > CCD Sub item Description DF-WLVL1 Not used DF-WLVL2 Not used <PARAM> T-16-16 COPIER >...
  • Page 296 Chapter 16 COPIER > FUNCTION > PARAM Sub item Description APS-LTLG Switching of whether or not to display "Automatic (LTR/LGL)" (For future expansion) Setting value: 0: Do not display the item, 1: Display the item [Factory setting value/Value after RAM clearing: 0: MF9330C/ MF9340C/ MF9370C/ iR C1021/ iR C1021i/ iR C1022/ iR C1022i/ iR C2110F/ iR C2110N 1: Other models] DSP-SCWD...
  • Page 297: Option List

    Chapter 16 COPIER > FUNCTION > SPLMAN Sub item Description SPL25407 Setting of thin paper/rough paper Change the process speed to 4/5 speed. Use the temperature control table for thin paper/rough paper. (Thin paper only) Do not change the process speed, but change the temperature control table. (Plain paper, Thick paper 2 only) Setting value: 0: OFF, 1: ON [Factory setting value/Value after RAM clearing: 0] SPL47267...
  • Page 298: Counter

    Chapter 16 COPIER > OPTION > BODY Sub item Description TMIC-BK Switching of the method of correcting the end of TMIC_BK_PASCAL_LUT (high-density area) Setting value: 0: Correction of the end of BK_LUT for PDL is set to OFF. Correction of the end of Bk_LUT for copy operation is set to OFF. 1: Correction of the end of BK_LUT for PDL is set to ON.
  • Page 299 Chapter 16 - Total A: Total number of counts for operation other than "local copy + remote copy" - Total B: Total number of counts for operation other than "local copy + remote copy + Box print" - Copy: Local copy + remote copy + Box print - Copy A: Local copy + remote copy + Box print - Print: PDL print + report print + Box print - Print A: PDL print + report print...
  • Page 300 Chapter 16 Compatibility Counter description Total B (full color 2) Total B (black and white 1) Total B (black and white 2) Total B (mono color /large) Total B (mono color /small) Total B (black and white /large) Total B (black and white /small) Total B1 (double sided) Total B2 (double sided) large B (double sided)
  • Page 301 Chapter 16 Compatibility Counter description Copies A (full-color 1) Copies A (full-color 2) Copies A (monocolor 1) Copies A (monocolor 2) Copies A (black and white 1) Copies A (black and white 2) Copies A (full-color/large) Copies A (full-color/small) Copies A (monocolor/large) Copies A (monocolor/small) Copies A (black and white/large) Copies A (black and white/small)
  • Page 302 Chapter 16 Compatibility Counter description Remote copies (monocolor/small/two-sided) Remote copies (black and white/large/two-sided) Remote copies (black and white/small/two-sided) Prints (total 1) Prints (total 2) Prints (large) Prints (small) Prints A (total 1) Prints A (total 2) Prints A (large) Prints A (small) Prints (full-color 1) Prints (full-color 2) Prints (monocolor 1)
  • Page 303 Chapter 16 Compatibility Counter description Copies + prints (monocolor/large) Copies + prints (monocolor/small) Copies + prints (full-color/large/two-sided) Copies + prints (full-color/small/two-sided) Copies + prints (monocolor/large/two-sided) Copies + prints (monocolor/small/two-sided) Copies + prints (black and white/large/two-sided) Copies + prints (black and white/small/two-sided) Scans (total 1) Scans (total 2) Scans (large)
  • Page 304 Chapter 16 Compatibility Counter description Media prints (full-color + monocolor/small) Media prints (full-color + monocolor 2) Media prints (full-color + monocolor 1) Media prints (full-color/large/two-sided) Media prints (full-color/small/two-sided) Media prints (monocolor/large/two-sided) Media prints (monocolor/small/two-sided) Media prints (black and white/large/two-sided) Media prints (black and white/small/two-sided) PictBridge (total 1) PictBridge (total 2) PictBridge (large)
  • Page 305 Chapter 16 Compatibility Counter description Report prints (large) Report prints (small) Report prints (full-color 1) Report prints (full-color 2) Report prints (gray scale 1) Report prints (gray scale 2) Report prints (black and white 1) Report prints (black and white 2) Report prints (full-color/large) Report prints (full-color/small) Report prints (gray scale/large)
  • Page 306 Chapter 16 Compatibility Counter description Sent scans/e-mails (black and white) Sent scans/FTP (color) Sent scans/FTP (black and white) Sent scans/SMB (color) Sent scans/SMB (black and white) Sent scans/IPX (color) Sent scans/IPX (black and white) Sent scans/databases (color) Sent scans/databases (black and white) Sent scans/local prints (color) Sent scans/local prints (black and white) Sent scans/box (color)
  • Page 307: Counter

    Chapter 16 COPIER > OPTION > LCNS-OF Disabling no transfer of license - ST-xxxx, Display of the installation status Sub item Description ST-BRDIM Display of the installation status of BarDIMM when disabling no transfer Setting value: 0: ON, 1: OFF [Factory setting value/Value after RAM clearing: 0] ST-ERDS Display of the installation status of the 3rd party extended function for ERDS when disabling no transfer...
  • Page 308: Feeder

    Chapter 16 COPIER > COUNTER > TOTAL Display/setting/adjustment range: 00000000 to 99999999 When 99999999 is exceeded, the value returns to 00000000. Sub item Description FAX-PRT FAX reception print counter Count up the counter value when the paper is delivered to outside or stacked in double-sided mode according to the charging counter at the time of FAX reception.
  • Page 309: Feeder

    Chapter 16 <DRBL-2> T-16-34 COPIER > COUNTER > DRBL-2 Display/setting/adjustment range: 00000000 to 99999999 When 99999999 is exceeded, the value returns to 00000000. Use this item as a guide to know the timing of replacement of consumable parts. Be sure to clear the value after the replacement of parts. Sub item Description DF-SP-PD...
  • Page 310 Chapter 16 SSSW No. Bit No. Function (Communication trouble-related) Check frequency of CI signal V.21 end flag Forbid duplex waiting of T.30 node T.30 node F echo timer Check frequency of CI signal at PBX settings Do not deliver CNG at manual transmission Do not deliver CED at manual reception (Standard function, DIS signal setting-related) mm/inch convert (text mode)
  • Page 311: Menu

    Chapter 16 SSSW No. Bit No. Function e-RDS function (0: OFF/1: ON) 16.4.2 MENU 16.4.2.1 MENU List 0020-2021 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c T-16-38 Registration mode of menu switch Number Parameter Description of the selection ON/OFF of NL equalizer 0: OFF, 1: ON Telephone line monitor 0: DIAL, 1: SERVICEMAN1, 2: SERVICEMAN2, 3: OFF...
  • Page 312: Ncu

    Chapter 16 16.4.4 NCU 16.4.4.1 NCU List 0020-2023 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c <TONE/ PULSE> Operating Method (1) Setting tone parameter With "#NCU" displayed, press set key -> Press "#TONE/PULSE" set key -> Pressing "#TONE" set key makes the setting mode for tone parameter. (2) Setting pulse parameter With "#NCU"...
  • Page 313 Chapter 16 Parameter No. Function Setting Range T1 timer 0 to 9999 (x 10 ms) T2 timer 0 to 9999 (x 10 ms) T3 timer 0 to 9999 (x 10 ms) T4 timer 0 to 9999 (x 10 ms) Signal sensing table 0 to 16 Signal sensing level 0 to 7...
  • Page 314 Chapter 16 Bit No. Function Signal sensing method Signal frequency Changes No change Screening intermittent signal From ON From both Signal format Continuous Intermittent Signal sensing (2) Numeric parameter T-16-50 Parameter No. Function Setting Range T1 timer 0 to 9999 (x 10 ms) T2 timer 0 to 9999 (x 10 ms) T3 timer...
  • Page 315 Chapter 16 Numb Setting Description Setting Range Upper limit for F/T calling time 0 to 9999 (sec) Number of trail edge margin (lines) at image's trail edge 0 to 9999 (lines) Time to capture F/T line 0 to 9999 (sec) Special SW17 bit 4 Delivery time for V34 control cannel flag 0 to 100 (x 10 ms) Delivery time for V34 primary channel flag...
  • Page 316: Testmode

    Chapter 16 (2) Numeric parameter T-16-58 Parameter No. Function Setting Range T1 timer 0 to 9999 (x 10 ms) T2 timer 0 to 9999 (x 10 ms) T3 timer 0 to 9999 (x 10 ms) T4 timer 0 to 9999 (x 10 ms) Signal sensing table 0 to 16 Signal sensing level...
  • Page 317: Print

    Chapter 16 TESTMODE > SCAN > ADJUST Sub item Description SCAN READ Start copyboard scanning operation to read white level of the document (original). FLOW SCAN Start stream scanning operation to read white level at stream scanning. READ KDT-DF1-R Display DT-DF1-R KDT-DF1-G Display DT-DF1-G KDT-DF1-B...
  • Page 318: Fax

    Chapter 16 TESTMODE > PRINT Printing PG pattern Sub item Description DENS-C Not used DENS-Y Not used DENS-K Not used COLOR-M Selection for each color is available The selected color (ON) is to be output. Setting value: 1: ON, 0: OFF COLOR-Y Selection for each color is available The selected color (ON) is to be output.
  • Page 319: Panel

    Chapter 16 TESTMODE > FAX > MODEM Sub item Description V34G3TX SPEED Close DC circuit to deliver the selected frequency using the modem's G3 signal delivery function (V. 34) 3429baud 3200baud 3000baud 2800baud 2743baud 2400baud <FACULTY> T-16-68 TESTMODE > FAX > FACULTY Sub item Description G34800TX...
  • Page 320 Chapter 16 Type of Key Character String Displayed LEFT RIGHT DOWN Reset key RESET Start key START Stop key STOP OK key (Key check is completed.) T-16-71 TESTMODE > PANEL Key, wheel, LCD, LED, and flicker check Sub item Description WHEEL CHECK START Wheel check Check the operation of the wheel.
  • Page 321 Chapter 16 TESTMODE > PANEL Key, wheel, LCD, LED, and flicker check Sub item Description FLICKER ADJUST Adjust the setting value. [Adjustment method] 1) Press the OK key. 2) In the setting value entry screen displayed, press the OK key again. 3) Increase or decrease the setting value to minimize flicker in the flicker screen displayed.
  • Page 322: Chapter 17 Upgrading

    Chapter 17 Upgrading...
  • Page 323 Contents Contents 17.1 Outline ..................................17-1 17.1.1 Overview of Upgrade ................................17-1 17.2 Making Preparations..............................17-2 17.2.1 Required System Environment..............................17-2 17.2.2 Before Upgrade ..................................17-2 17.3 Downloading System Software ..........................17-3 17.3.1 Downloading the System Software ............................17-3 17.3.1.1 Downloading Procedure....................................17-3...
  • Page 324: Outline

    Chapter 17 17.1 Outline 17.1.1 Overview of Upgrade 0019-5082 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c To upgrade this machine, download the firmware from PC to the machine with using the user support tool (hereinafter called UST). Firmware USB cable Main body F-17-1 Firmware Structure...
  • Page 325: Making Preparations

    Chapter 17 17.2 Making Preparations 17.2.1 Required System Environment 0019-5085 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c - OS (any of the following) - Microsoft Windows 2000 Server/Professional - Microsoft Windows XP Professional/Home Edition * - Microsoft Windows Server 2003 * - Microsoft Windows Vista * *: 32-bit processor version only - PC...
  • Page 326: Downloading System Software

    Chapter 17 17.3 Downloading System Software 17.3.1 Downloading the System Software 17.3.1.1 Downloading Procedure 0019-5087 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c 1) Open the UST (wlaaXXXX-ust-all.exe). XXXX: firmware version 2) Note the firmware version that the current one will be updated to and click "Next". F-17-3 17-3...
  • Page 327 Chapter 17 3) Click "Next". F-17-4 4) Select a USB connected device and click "Next". F-17-5 17-4...
  • Page 328 Chapter 17 5) Click "Start". F-17-6 6) Click "Yes". F-17-7 Download will be started. F-17-8 17-5...
  • Page 329 Chapter 17 7) When download is complete, click "OK". F-17-9 The machine restarts automatically. 8) Check that the firmware version is the same as the one checked in step 2) in service mode. COPIER> DISPLAY> VERSION 17-6...
  • Page 330: Service Tools

    Chapter 18 Service Tools...
  • Page 331 Contents Contents 18.1 Service Tools ................................18-1 18.1.1 Special Tools .................................... 18-1 18.1.2 Standard Tools..................................18-2 18.1.3 Solvent/Oil List ..................................18-2...
  • Page 332: Special Tools

    Chapter 18 18.1 Service Tools 18.1.1 Special Tools 0019-5310 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c In addition to the standard tools set, the following special tools are required when servicing the machine: T-18-1 Tool name Tool No. Ctgr Appearance Remarks Digital multimeter...
  • Page 333: Standard Tools

    Chapter 18 Ctgr: A: Must be kept by each service engineer. B: Must be kept by each group of about five engineers. C: Must be kept by each workshop. 18.1.2 Standard Tools 0019-5059 imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c The table below lists the standard tools required for servicing the machine.
  • Page 334 Appendix...
  • Page 335 Contents Contents 1 General Timing Chart....................................1 Sequence of Operations (reader unit)............................... 1 Sequence of Operations (printer unit)............................... 1 2 General Circuit Diagram..................................... 3 Signal Names......................................3 General Circuit Diagram................................... 8...
  • Page 336: General Timing Chart

    1 General Timing Chart Sequence of Operations (reader unit) imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c Move shading correction *2 HP shift Book Position shift Start key ON Gain correction *1 Scan movement HP shift STBY SREADY Reader motor (M12) Document lamp (LAMP1,2)
  • Page 337 Print command Operation STBY INTR PRNT LSTR STBY Fixing temperature control Fan (FM1) Drum motor (M6/M7/M8/M9) Pickup motor (M4) ETB motor (M5) Fixing motor (M1) Normal rotation Reverse rotation Reverse motor (M11) Duplexing feed motor (M10) Scanner motor (M2/M3) Cassette pickup solenoid (SL5012) Registration sensor (SR710) Fixing delivery sensor (SR6005) Reverse sensor (SR706)
  • Page 338: General Circuit Diagram

    2 General Circuit Diagram Signal Names List Of Signals imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c T-2-1 Abbreviation Signal name VDO_K0_P VIDEO signal (Black video 1) SERIAL DATA signal VDO_K0_N VIDEO signal (Black video 1) SERIAL DATA signal VDO_K1_P VIDEO signal (Black video 2) FPCK SERIAL CLOCK signal...
  • Page 339 Abbreviation Signal name MAINTH MAIN THERMISTOR TEMPERATURE signal SUBTH SUB THERMISTOR TEMPERATURE signal FSRLPS PAPER LOOP signal POUTS FIXING PAPER signal /PSSWOPEN POWER SWITCH MONITOR signal PSOFF POWER OFF CONTROL signal ZEROX ZERO CROSSING signal FSRD FIXING HEATER DRIVE signal RLD- RELAY DRIVE signal - RLD+...
  • Page 340 Abbreviation Signal name /VDO42 VIDEO signal (Black video 2) VDO42 VIDEO signal (Black video 2) LD4CTRL2 LASER CONTROL signal LD4CTRL1 LASER CONTROL signal LD4CTRL0 LASER CONTROL signal /VDO41 VIDEO signal (Black video 1) VDO41 VIDEO signal (Black video 1) LDPWRH LASER LIGHT INTENSITY SWITCH signal LD4PDOUT LASER CURRENT OUTPUT signal...
  • Page 341 Abbreviation Signal name COLOR MISREGISTRATION/IMAGE DENSITY sig- RDSRDR nal (Irregular reflection) COLOR MISREGISTRATION/IMAGE DENSITY DE- RDSRLED TECTION LED DRIVE signal COLOR MISREGISTRATION/IMAGE DENSITY sig- RDSLSR nal (Regular reflection) RDSLGAIN0 PHOTORECEPTION SENSITIVITY SWITCH signal RDSLGAIN1 PHOTORECEPTION SENSITIVITY SWITCH signal CSTPEMPS CASSETTE PAPER signal COLOR MISREGISTRATION/IMAGE DENSITY DE- RDSLLED TECTION LED DRIVE signal...
  • Page 342 Abbreviation Signal name TGCS3 MEMORY TAG CLOCK signal TGCS2 MEMORY TAG CLOCK signal TGCS1 MEMORY TAG CLOCK signal TGCA MEMORY RESET signal /SCNM1ACC SCANNER MOTOR ACCELERATION signal /SCNM1DEC SCANNER MOTOR DECELERATION signal /SCNM2ACC SCANNER MOTOR ACCELERATION signal /SCNM2DEC SCANNER MOTOR DECELERATION signal /DM2DEC DRUM MOTOR DECELERATION signal (Cyan) DRUM MOTOR REVERSE COMMAND signal (Yel-...
  • Page 343: General Circuit Diagram

    Abbreviation Signal name INPOPS OP PAPER FEEDER PAPER signal MULTI-PURPOSE TRAY PICK-UP SOLENOID MPTSL DRIVE signal OP PAPER FEEDER MEDIA SENSOR REGULAR INPOPMSSR REFLECTION signal CSTSL CASSETTE PICK-UP SOLENOID DRIVE signal OP PAPER FEEDER MEDIA SENSOR IRREGULAR INPOPMSDR REFLECTION signal FSRMREV FIXING MOTOR REVERSE COMMAND signal OP PAPER FEEDER PICK-UP SOLENOID DRIVE...
  • Page 344 J1001 PCB1 DC controller PCB J1006 J1004 J1002 J1014 J8112 J8129 J8125 J5027DH J5027D J5026M J5026F J5027L J5025M To P.5 J5025F 10 9 J3014 J3015 J3013 J3016 J3012 UL1015 AWG18 W PIN3010 J3004 100V Only UL1015 AWG18 BK PCB8 J3020 UL1015 AWG18 Y/G Low-voltage power PCB J6007D...
  • Page 345 Laser scanner unit PCB4 Scanner Scanner Memory controller PCB motor 1 motor 1 J310 SR716 SR711 SR712 PCB7 PCB7 Bk developing YMC developing cartridge sensor disengagement disengagement Laser driver PCB Laser driver PCB J102 J101 sensor sensor J311 J5001A J5001B J301 J312 PCB28...
  • Page 346 SL5011 ETB disengagement solenoid ETB motor J5011L SR701 SR702 SR703 SR704 J5002 M drum motor C drum motor Y drum motor Bk drum motor M drum C drum Y drum Bk drum J5011DH HP sensor HP sensor HP sensor HP sensor J5011D J5003 J5004...
  • Page 347 UL3725#26 LAMP1 Document lamp PCB11 J9103 AWG24 CCD PCB PCB12 J9102 J8502 UL3725#26 Inverter PCB J8501 J9104 LAMP2 Document lamp J6151 PCB13 CCD relay PCB External device J6101 SR720 SD CARD Front cover sensor J6015 J720 J6014 SD CARD RAM DIMM J8106 J8113 J8130...
  • Page 348 PCB18 Main controller PCB J8127 J8131 J8121 J8120 J8124 J8123 FFC12 J8128 J8134C J8126 J8103 J8114 9 10 11 12 Secondary battery PCB24 NCU PCB J205A J202A SOLD13 SOLD15 PCB17 Control panel relay PCB Speaker J6028 J5014D J5015D 12 11 10 9 J201A J204A PCB14...

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