Oki MC760 Maintenance Manual
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Oki MC760 Maintenance Manual

Oki MC760 Maintenance Manual

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This document is "OKI DATA – CONFIDENTIAL"
Only persons and parties authorised by OKI DATA have
permissions to access this document.
This document should not be accessed by any parties
without the approval of OKI DATA.
Anyone who is found to be contradicting the above may be subject to legal action.
OEL Maintenance Manual
MC760/MC770/MC780
ES7470MFP/ES7480MFP
Revision 2

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Summary of Contents for Oki MC760

  • Page 1 This document is “OKI DATA – CONFIDENTIAL” Only persons and parties authorised by OKI DATA have permissions to access this document. This document should not be accessed by any parties without the approval of OKI DATA. Anyone who is found to be contradicting the above may be subject to legal action.
  • Page 2 Document Revision History Corrected items Person in Rev.No Date Corrected items charge Person in Page Description of change Rev.No Date charge Page Description of change 2013-03-28 Issue P2E1 T. Asaba 2013-09-10 Add LCF Unit P2E16 T.Oyama 2013-12-24 Correct error codes P2E16 T.Oyama 2015-07-17 Correct remedial measure...
  • Page 3 PREFACE This manual provides an overview of method for maintaining the MC760/MC770/MC780. This manual is intended for maintenance staff. For more information about how to operate the MC760/MC770/MC780, please refer to User 's manual. Risk of explosion if battery is replaced by an incorrect type.

  • Page 4: Table Of Contents

    Index 1. Configuration ................6 2.3.2.1 Overview ....................43 2.3.2.2 Exposure block ..................44 1.1 System configuration .................... 7 2.3.2.3 Carraige-Assy drive mechanism ............44 1.2 The Configuration of printer .................. 8 3. Set up ..................45 1.3 Optional parts ....................... 9 1.4 Specifications .....................
  • Page 5 4.2.17 Guide eject Assy/ Color regist Assy/ Board-IBY ......... 84 5.2.1.8 Consumable item counter display ............129 4.2.18 FAN(Fuser) / Belt motor/ High-voltage board / Lever Assy.-InterLock / 5.2.1.9 Number of print copies counter display ..........130 Cover open switch ..................85 5.2.1.10 Switching between the Factory mode and the Shipping mode ..

  • Page 6: Configuration

    Configuration 1.1 System configuration ..............7 1.2 The Configuration of printer ............8 1.3 Optional parts ................9 1.4 Specifications ................10 1.5 Specification of interface..............18...

  • Page 7: System Configuration

    1.Configuration 1.1 System configuration Figure 1-1 represents the system configuration of the printer. Clutch solenoid Clutch ID UP BELT sensor Stacker full RFID PCB sensor Paper sensor ADF Relay PCB Finisher Unit K LED HEAD Cover Open sensor Y LED HEAD Stapler Cover SW Stapler Scan...

  • Page 8: The Configuration Of Printer

    1.Configuration 1.2 The Configuration of printer The parts in the MC760/MC770/MC780 are shown as below. • Electrophotography process mechanism • Paper feed path • Control part (CU part/ PU part/ FAX Unit) • Operator panel • Power part (High-voltage part/low-voltage part) The Configuration of the MFP is shown in Fig 1-2.

  • Page 9: Optional Parts

    1. Configuration 1.3 Optional parts (4) LCF The optional parts for this printer are shown as below. (1) Optional tray(second tray/ third tray/fourth tray*) *fourth tray:not support for Finisher model (2) Spacer (3) Caster Stand...

  • Page 10: Specifications

    1. Configuration 1.4 Specifications Fundamental specifications Category Item MC760 MC770 MC780 Operating environment During operation 10 °C to 32 °C,17 °C to 27 °C (Full color Category Item MC760 MC770 MC780 (temperature) print quality assurance temperature) Outside dimensions Width 522mm During non-operation 0°C - 43°C, Power OFF...
  • Page 11 1. Configuration Printer section specifications Category Item MC760 MC770 MC780 Life Transfer belt life 60,000 pages Category Item MC760 MC770 MC780 Fuser life 60,000 pages Print width Print width A4 horizontal Paper handling 1st Tray 530 sheets of 80g/m (70Kg) plain paper...
  • Page 12 1. Configuration Scanner section specifications Category Item MC760 MC770 MC780 Minimum paper size 1st/2nd/3rd/4th tray 5.8" x 8.3" (148 x 210mm : A5) Item 8.5”×11”(210×297mm : A4) Scanner type Legal size flatbed with RADF Multi purpose tray 3" x 5" (Index Card),...
  • Page 13 1. Configuration Network specifications Item Connection 10Base-T/100Base-TX/1000Base-T Communication protocol TCP/IP V4, TCP/IP V6, NetBIOS over TCP, Ether Talk, NetWare, LPR, Port9100, IPP, FTP, WSD-print, SMTP, POP3, HTTP, SNMPv1, SNMPv3, DHCP, DNS, DDNS, WINS, SLP, Bonjour, SNTP Supported browser Microsoft Internet Explorer Ver. 6.0 or higher Safari 4.0 or higher Firefox 3.5 or higher 13 /...
  • Page 14 1. Configuration Copy function Categories Specs Copy Resolution Scan: 300x300dpi / 300x600dpi / 600x600dpi Print: 600x600dpi / 600x1200dpi Document Flatbed/RADF A4, A5, A6, B5, Executive, Letter, Legal13, Size Legal13.5, Legal14, Folio Number of Copies 1 to 999 pages Collate(Sort) (No. of page is depend on HDD capacity) Zoom Custom 25 ~ 400%, to scale by 1%.
  • Page 15 Yes (26 Countries) Memory Tx/Rx Transmission Ability Letter / Legal Relay Broadcast Reception Ability Letter /unlimited (OKI Mode) Fax Resolution 8 x 3.85 dots/mm, 8x 7.7 dots/mm, Confidential Tx/Rx 8 x 15.4dots/mm, 16 x 15.4 dots/mm, (OKI Mode) Bulletin Poll...
  • Page 16 1. Configuration Category Item MC770 MC780 Category Item MC770 MC780 Security Function Junk Fax Protection Fax Local Print Activity Report Yes (Transmission /Reception Journal) Memory Only Yes (High security mode) Message Yes (Transmission Report) Function Reception Confirmation Report ID Check TX (Single Location) Double input for Yes (can be switched by service person)
  • Page 17 1. Configuration Internet Fax Category Item MC760 MC770 MC780 Security Junk Fax Function Protection Category Item MC760 MC770 MC780 Memory Only General Compatibility T.37 (Simple Mode) Reception Function T.37 (Direct SMTP Mode)* *by Service Code Setting ID Check TX Transmission...

  • Page 18: Specification Of Interface

    1. Configuration 1.5 Specification of interface 1.5.1 Specification of USB interface (2) Cable The length of the cable: the cable of less than 5m with USB 2.0 spec. (Less than 2m is recommended) 1.5.1.1 General of USB interface (Please use the shielded wire for the cable.) (1) Spec.

  • Page 19: Specification Of Network Interface

    1. Configuration 1.5.2 Specification of network interface (2) Cable Non-shield twisted-pair cable with RJ-45 connector (Category 6 is recommended) 1.5.2.1 General of network interface Spec. 1.5.2.3 Signal of network interface Network Protocol (1) 10/100Base-T TCP/IP sepc. Network layer ARP, IP, ICMP, IPv6, IPSec Pin No.

  • Page 20: Telephone Line Interface Specification

    1. Configuration 1.5.3 Telephone Line Interface Specification 1.5.4 USB Host Interface 1.5.3.1 Outline of telephone Line Interface 1.5.4.1 Outline of USB Host Interface The machine will reliably communicate with distant stations over voice-level telephone (1) Basic Specification line. 1.5.3.2 Telephone Line Interface Connector and Cable (2) Transmission Mode Hi Speed (480Mbps±0.05% max.) Connector Type : RJ-11...

  • Page 21: Specification Of Acc Interface

    1. Configuration 1.5.5 Specification of ACC interface Connecting device Card reader (Option) Connector Printer side: USB A receptacle (female) Downstream port UBA-4R-D14C2-4D(LF)(SN) (JST Mfg. Co.,Ltd) or equivalent Cable side: USB A plug (male) Interface signals Contact No. Signal Name Function VBUS Power supply(+5V) For data transfer...

  • Page 22: Operating Instructions

    Operating instructions 2.1 Electrophotographic processing mechanism .......23 2.2 Printing process ................27 2.3 Image Scanning process .............38...

  • Page 23: Electrophotographic Processing Mechanism

    2. Operating instructions 2.1 Electrophotographic processing mechanism (1) Electrophotographic processing (2) Charging The voltage is impressed to the charging roller in contact with the surface of The general of Electrophotography process is described as below. OPC drum, and the surface of OPC drum is minus charged. 1.
  • Page 24 2. Operating instructions (4) Development (5) Transfer The toner adheres to the electrostatic latent image on the surface of the drum, The paper is overlapped on the surface of the OPC drum, and the electricity is and the electrostatic latent image is changed into the toner image. generated on the back of the paper by transfer roller.
  • Page 25 2. Operating instructions (6) Fusing (7) Drum cleaning When the paper passes through the heat roller and backup roller unit, heat and The Unfused toner left on the OPC drum is cleaned up by the drum cleaning pressure are applied to the toner image on the paper and the toner is fused onto blade, and all residual toner is collected in the waste toner area of the toner the paper.
  • Page 26 2. Operating instructions (9) Belt cleaning The toner left on the transport belt is cleaned up by the belt cleaning blade, and all residual toner is collected in the waste toner box of the transport belt unit. Transport belt Belt waste toner box Belt cleaning blade 26 /...

  • Page 27: Printing Process

    2. Operating instructions 2.2 Printing process The paper fed from tray 1 or tray 2, tray.3 is transferred by feeder roller, resister roller L, and transfer roller. It is transferred by MPT paper feed roller and resister roller U when the paper is fed from MPT. After that, the paper on the belt passes through the electrophotography process of KYMC, and sequentially the unfused toner image is generated on the paper.
  • Page 28 2. Operating instructions (1) Paper feeding from 1st tray (2) Paper feeding from MPT 1. As figure 2-1 shows, a feed motor runs clockwise, a feed clutch engages and 1. As figure 2-3 shows, a feed motor runs counterclockwise, an MPT clutch paper is fed (a feed roller rotates when the feed clutch engages).
  • Page 29 2. Operating instructions (3) Transport belt 1. When the transport belt motor is rotated in the direction of the arrow, the transport belt is driven. As for the belt unit, a transfer roller is set over under each color drum. The belt is caught and installed between the transfer roller and drum.
  • Page 30 2. Operating instructions (4) Updown operation of ID unit The operation of each ID unit when color printing C-ID unit DOWN 1. The up and down operation of the ID unit is done by driving the liftup motor. C-ID unit M-ID unit Y-ID unit K-ID unit...
  • Page 31 2. Operating instructions (5) Fuse unit and paper delivery (6) Cover open operation of color blur sensor and density sensor 1. The fuse unit and the eject roller are driven by the DC motor as shown in 1. As shown in Fig. 2-9, when the fuse motor is rotated (clockwise), the cover Fig.
  • Page 32 2. Operating instructions General of color blur correction The color blur correction is operated by reading the pattern for correction printed on the belt with a sensor set in the sensor shutter under the belt unit. Transport belt The pattern is detected by this sensor, and the correction is operated. Color blur correction auto-start timing •...
  • Page 33 2. Operating instructions Error-confirming method and Error-solving method Use the color registration correction test in self-diagnostic mode to confirm the error. (See 5.2.1.6) Error solving method • CALIBRATION(L or R), DYNAMICRANGE(L or R) Check 1: When the above display appears, please check the connection of sensor cable (FFC).
  • Page 34 2. Operating instructions General of the density correction The density correction is operated by reading the pattern for correction printed on the belt with a sensor set in the sensor shutter under the belt unit. Transfer belt Density correction auto-start timing •...
  • Page 35 2. Operating instructions Error-confirming method and Error-solving method Toner sensor detection principle Use the density correction test function in self-diagnostic mode to confirm the error. Toner low is detected by the toner sensor (reflect sensor) installed in the equipment. The light board is installed in ID, and its rotation is synchronized with the mixing of toner. (See 5.3.1.7) Toner low is detected by time for the light board passed toner sensor.Moreover, the shutter is installed in ID.
  • Page 36 2. Operating instructions Counter spec Total printed page MPT printed page Tray 1 printed page Tray 2 printed page Tray 3 printed page Tray 4 printed page Color-printed page number Mono-printed page number number number number number number number Description Total printed Hopping page Hopping page...
  • Page 37 2. Operating instructions A4/Letter conversion table The paper is counted up as this sheet. Paper size Simplex Duplex LETTER EXECUTIVE LEGAL14 LEGAL13.5 LEGAL13 COM-9 COM-10 MONARCH CUSTOM LENGTH ≤ 210mm CUSTOM 210mm < LENGTH ≤ 899mm CUSTOM 900mm ≤ LENGTH 37 /...

  • Page 38: Image Scanning Process

    2. Operating instructions 2.3 Image Scanning process 2.3.1 Structure and process of RADF 2.3.1.2 Electrical configuration Electrical circuit configuration 2.3.1.1 Cross-section view This Scanner is controlled by the SU board(7SU). The ASIC mounted on the SU board(7SU) control the DC load devices such as motor, solenoid and clutch via the ADF Relation board(7RL), in dependance of the sensor signals and control signals from the CU board not to be shown in the below figure.

  • Page 39: Fundamental Operations

    2. Operating instructions 2.3.1.3 Fundamental operations Overview of operation modes There are four operation modes that are executed by the MFP. The respective operation Drive force trasmission diagram modes are executed in accordance with the instructions given by the connected equipment The MFP is a document feed device of skim reading only.
  • Page 40 2. Operating instructions Normal direction feed paper and unload paper (single-sided document → single sided print) operation Outline of document flow is shown below. Supplement : When a single-sided document is selected, this operation is performed regardless of the same size mixed documents or different sizes mixed documents.
  • Page 41 2. Operating instructions Normal direction feed paper/Inverted unloading of paper (both-sided → document both sided print) operation Outline of document flow is shown below. Supplement : When a both-sided document is selected, this operation is performed regardless of the same size mixed documents or different sizes mixed documents.

  • Page 42: Document Detection

    2. Operating instructions 2.3.1.4 Document detection Detection of final document The document set sensor (PI15) detect if the document that has started of the final document Document present/absent detection has passed the set sensor lever, the detection lever moves together with the light-shielding Document present/absent detection on the document tray is performed by document set plate so that the photo interrupter that has been shutting down the light, passes the light.

  • Page 43: Overview

    2. Operating instructions 2.3.1.5 Jam detection 2.3.2 Document table structure Document jam is detected by the sensors shown in the illustration.Check timing of the 2.3.2.1 Overview document jam detection has already been memorized in the ROM of the sensor main PCB beforehand so that jam occurrence can be judged from the information if a document exits or Flatbed unit consist of Cover-Top-Assy, Frame-Bottom-Assy, Carriage-Assy and Flatbed drive not, at the corresponding sensor block.

  • Page 44: Exposure Block

    2. Operating instructions 2.3.2.2 Exposure block 2.3.2.3 Carraige-Assy drive mechanism Carriage-Assy drive mechanism Carriage-Assy performs the function of irradiating the lamp light uniformly over a document while moving its position. The carriage-Assy is driven by a belt which is driven by the FB motor. Scanner moves at the scan speed corresponding to the respective magnification ratios that are set with reference to the standard scanning speed.

  • Page 45: Set Up

    Set up 3.1 Notes and precautions ..............46 3.2 Unpack method ................47 3.3 Setting method ................48 3.4 List of equipments and accessories ..........49 3.5 Assembling method ..............50 3.6 Setting content print (Configuration) ..........64 3.7 Connecting method ..............65 3.8 User used Paper confirmation .............69...

  • Page 46: Notes And Precautions

    3. Set up 3.1 Notes and precautions • Do not set it in any high-temperature locations or near any heat sources. • If the liquid such as water enters the MFP, please pull out the power plug from the outlet and contact the customer center.It may cause fire. •...

  • Page 47: Unpack Method

    3. Set up 3.2 Unpack method Personal injuries may occur. B e c a u s e t h e w e i g h t o f t h e M F P i s a p p r o x i m a t e l y 60kg(71kg:Finisher model) (in a state of packing), it needs more than three adults to lift it up.

  • Page 48: Setting Method

    3. Set up 3.3 Setting method Plan view • Set the MFP under these conditions. Surrounding environment: 10~32 Surrounding humidity: 20~80%RH (Relative humidity) 20cm Highest wet bulb temperature: 25 • Protect the MFP from dew formation. • Use the humidifier or the static electricity prevention mats etc. when setting the MFP in the environment where the humidity is 30% or less.

  • Page 49: List Of Equipments And Accessories

    3. Set up 3.4 List of equipments and accessories • Make sure that the appearance of the equipment is not damaged or dirty etc. Printer software DVD-ROM • Make sure that the following accessories are supplied with your MFP . Power supply cord •...

  • Page 50: Assembling Method

    3. Set up 3.5 Assembling method 3.5.1 Assemble the main body of the MFP (3) Peel off the protection tape (5 places) on the back of the MFP. Remove the protective materials. (1) Peel off the desiccant and the protection tape (three places) and pad on the MFP.
  • Page 51 3. Set up (6) Open the scanner and press down the OPEN button, and open the top cover. (7) Remove the stopper (orange) when pressing down the lever of the fuser unit (blue) in the direction of arrow Note! If you do not use the MFP for a long time or transport it, please use the stopper.
  • Page 52 3. Set up Set the image drum cartridge. (2) Put the image drum cartridge on the newspaper etc, peel off the tape of protection sheet and pull it out in the direction of the arrow. (1) Take the image drum cartridge (four) out slowly. Note! •...
  • Page 53 3. Set up (4) Return the image drum cartridge back to the MFP. (6) Close the top cover and scanner. Note! If the message of [%COLOR% Waste Toner Full.Replace Toner.] on the control panel doesn't disappear indefinitely, please make sure that the lever of the toner cartridge is fully moved in the direction of the arrow.
  • Page 54 3. Set up Set the paper into the paper cassette. (4) Place the paper in the cassette with the side to be printed facing down. Note! • Place the paper with the top of the page nearest the paper cassette tab. (1) Pull out the paper cassette.
  • Page 55 3. Set up Set the paper in multi-paper tray. (4) Place the printed side facing up, and insert the paper along the manual insertion guide straightly until bumping up. (1) Open the multi-paper tray, and open the paper supporter. Multi-paper tray Note! Set papers so that paper should not exceed the "...
  • Page 56 3. Set up Loading Documents on the ADF Loading Documents on the Document Glass (1) Load your documents face up on the ADF. (1) Lift and open the document glass cover. If your documents are portrait, load them with the top edge of the documents in first. (2) Place a document face down on the document glass.

  • Page 57: Cable Connect

    3. Set up 3.5.2 Cable connect Connect the power cord. Power condition Note! Confirm that the power switch is turned to OFF " ". (1) Insert the power cord into the MFP. • Keep the following items. AC voltage : 100V ±10% /110~127V ± 10%/ 220~240V ± 10% Frequency of the power supply : 50Hz or 60Hz ±...
  • Page 58 3. Set up Turn the power off. When do not use the MFP for long time Note! If you turn off the power without properly shutting down, it may cause Please explain to the customer about the following items. damage to the MFP. Please follow the following procedure to turn the power Unplug the power cord if you do not use the MFP for a long time (long vacation or travel etc).

  • Page 59: Optional Part Installation And Confirmation

    3. Set up 3.5.3 Optional part installation and confirmation (1)-2. Install the optional tray unit to the MFP. Note! Because the weight of the MFP body is approximately 50kg, it needs more (1) Installation of the optional tray unit (second/ third/ fourth tray/ LCF) than three adults to lift it up.
  • Page 60 For Windows 2000, click on [start] => [Settings] => [printers]. Note! If the content of [tray 2] or [tray 3] is not displayed, reinstall the second tray Click [OKI MC780*¹(*²)] icon with unit. right-click button on your mouse and choose [Properties].
  • Page 61 3. Set up Open System Preferences and click [Print & Scan]. For Mac OS X Select [OKI-MC780], click [Options & Supplies]. When the optional device has been added into in Mac OS X before installing the Click [Driver]. printer driver, the device information is gotten automatically. However, if the printer Set the following options.
  • Page 62 3. Set up <For e-STUDIO287CS/347CS/407CS> The printer driver setup for recognizing the option drawer unit is required. If the printer driver is not set up, please set up the printer driver completely referring to the user's manual (Setup) firstly, and then finish the following setting procedure. Note! The authority of the computer administrator is required.
  • Page 63 3. Set up Open System Preferences and click [Print & Scan]. For Mac OS X Select [TOSHIBA e-STUDIO407CS], click [Options & Supplies]. When the optional device has been added into in Mac OS X before installing the Click [Driver]. printer driver, the device information is gotten automatically. However, if the printer Set the following options.

  • Page 64: Setting Content Print (Configuration)

    3. Set up 3.6 Setting content print (Configuration) To confirm the MFP operates normally, please print the [Configuration]. (sample) (1) Set A4 paper in tray. (2) Press the SETTING button of display. (3) Press the LIST button of display. (4) Press down the FUNCTION button of display. Memo When printing the network setting information ,enter the administrator menu.

  • Page 65: Connecting Method

    3. Set up 3.7 Connecting method <USB connection> Connect the computer to the MFP. Note! Please refer to user’s manual for operation environment. (1) Insert the USB cable into the USB interface connector of MFP. (2) Insert the USB cable into the USB interface connector of computer. Prepare for USB cable Note! Do not insert the USB cable into the network interface connector.
  • Page 66 3. Set up < Ethernet cable connection> Note! Refer to user’s manual for operation environment. Prepare for Ethernet cable Note! The Ethernet cable and Hub is not included in MFP. Provide the Ethernet cable and Hub for special user. <Ethernet cabl> <Hub>...
  • Page 67 3. Set up < Telephone line cable connection> To connect to public telephone line (To connect to the telephone of the MFP) Connection of the telephone line cable is different in each country and location. Connect the MFP to suit to the environment of each installation location using the following Connect the telephone cable that is connected to the public telephone line (analog) diagram as reference.
  • Page 68 3. Set up To connect to the Optical fiber (IP telephone) To connect to the telephone switch board (PBX), home telephone, or business phone Connect the telephone cable that is connected to the Optical fiber (IP telephone) to the [LINE connector] of the MFP. Connect the external telephone machine to the [TEL Connect the telephone cable that is connected to the public telephone line (analog) connector] of the MFP to the [LINE connector] of the MFP.

  • Page 69: User Used Paper Confirmation

    3. Set up 3.8 User used Paper confirmation Load the paper used by user, set the media type/weight, print the setting content/demo, and confirm if the toner is chipped off. settings of [Paper Type] control panel Type Thickness settings of printer driver* Paper Type Plain paper*...

  • Page 70: Component Replacement

    Component replacement In this chapter, the procedures for replacement of part and assembly and unit are described. The replacement procedure is described by removal of the parts. Please install the new parts with following the replacement procedure in reverse order. The parts (such as ①...

  • Page 71: Precautions On Component Replacement

    4. Component replacement 4.1 Precautions on component replacement (1) Remove the AC cord and the interface cable before replacing the parts. (2) Do not disassemble it if the printer works normally. (a) Remove the AC cord according to the following procedure. (3) Disassemble it as required.
  • Page 72 4. Component replacement [Maintenance tool] The required tools for using the Maintenance Utility are shown in Table 4-1-2. The required tools for replacing the PCB and the unit are shown in Table 4-1-1. Table 4-1-2 required tools Maintenance tools Amount Purpose Note Table 4-1-1 Maintenance tools...

  • Page 73: Method Of Component Replacement

    4. Component replacement 4.2 Method of component replacement (3) Rotate the lock lever (blue, 2 places) of the belt unit ② in the direction of arrow In this chapter, the replacement of parts and assemblies is described by the disassemble figures.

  • Page 74: Fuser Unit

    4. Component replacement 4.2.2 Fuser unit 4.2.3 Right side cover (1) Open the scanner and top cover. (1) Open the scanner and top cover. (2) Loose the two screws (silver, No:42920408) ① and two screws (black,No:42932710) ② . (2) Push up the fix lever of fuser unit in the direction of arrow, and remove the fuser unit ①...

  • Page 75: Left Side Cover

    4. Component replacement 4.2.4 Left side cover 4.2.5 Scanner unit (1) Open the scanner and top cover. (1) Open the scanner and top cover. (2) Open the feeder unit. (2) Remove the right side cover.(See section 4.2.3) (3) Remove the claw ① , and remove the Feeder-Unit without disconnecting the cable. (3) Remove the Cover-Side(R-Top) ①...

  • Page 76: Faceup Tray

    4. Component replacement 4.2.6 Faceup tray 4.2.7 Rear cover (1) Draw out the Duplex unit ① . (1) Open the faceup tray. (2) Open the faceup tray ② in the direction of arrow, and unlock the left and right (2) Remove the two screws (silver, No:42920406) ① . pins while bending.

  • Page 77: Led Assy/ Led Assy Spring

    4. Component replacement 4.2.8 LED Assy/ LED Assy spring 4.2.9 CU PCB/PU PCB/Low voltage power supply Warning (1) Open the scanner and top cover. Risk of Electric Shock (2) After removing the cable, as shown in fig 2, push the LED assy ① tightly in the direction of arrow.
  • Page 78 4. Component replacement ⑧ ×2 ⑦ ⑤ ×8 ④ ③ ×4 ② ① ×8 ⑩ ⑨ ⑪ ×2 CU PCB PU PCB ⑫ DCIDR IDFAN 44973399 C118 HEAD0K R239 HEAD1Y CP10 R231 RM36 Board-7PU IC21 HEAD2M RM34 RM35 IC20 ③ RM31 RM32 RM33...

  • Page 79: Stay-R

    4. Component replacement 4.2.10 Stay-R 4.2.11 Plate-Board-R Assy/Guide-Cable Power Low (1) Remove the right side cover. (See section 4.2.3) (1) Remove the right side cover. (See section 4.2.3) (2) Remove the Scanner. (2) Remove the stay-R Assy. (See section 4.2.10) (3) Remove the soft-absorber ①...

  • Page 80: Top Cover Assy

    4. Component replacement 4.2.12 Top cover Assy (1) Remove the right side cover. (See section 4.2.3) (2) Remove the left side cover. (See section 4.2.4) (3) Remove the rear cover. (See section 4.2.7) (4) Remove the plate shield and take CU PCB and PU PCB out. (See section 4.2.9) (5) Remove the connectors of the stack full sensor cable and ID-FAN cable, remove the connector and the hanging RFID cable ①...

  • Page 81: Top Cover

    4. Component replacement 4.2.13 Top cover 4.2.14 Frame Assy Top Front (1) Remove the top cover Assy. (See section 4.2.12) (1) Remove the right side cover. (See section 4.2.3) (2) Remove fifteen screws(black, No:42932708) ① , and remove the top cover ② . (2) Remove the plate shield.

  • Page 82: Board Mfh

    4. Component replacement 4.2.15 Board MFH (1) Remove the Frame Assy Top Front. (See section 4.2.14) (2) Disengage the claws(2 places) on the of Board MFH ① and remove the Board MFH ① . 82 /...

  • Page 83: Hopping Motor/ Fuse Motor

    4. Component replacement 4.2.16 Hopping motor/ Fuse motor/Low voltage FAN/ID Motor (1) Open the scanner and top cover. (2) Remove the plate shield and take CU PCB and PU PCB out. (See section 4.2.9) (3) Remove the two screws ① (silver, No:42920428) and connector, and take the low voltage FAN ②...
  • Page 84 4. Component replacement 4.2.17 Guide eject Assy/ Color regist Assy/ Board-IBY (1) Remove the left side cover, right side cover, rear cover, top cover Assy. (See section 4.2.4, 4.2.3, 4.2.7, 4.2.12) connector Claw (2) Remove CU PCB and PU PCB and low-voltage power supply. (See section 4.2.9) ②...
  • Page 85 4. Component replacement 4.2.18 FAN(Fuser) / Belt motor/ High-voltage board/ 4.2.19 MPT Assy Lever Assy.-InterLock/ Cover open switch (1) Open the MPT Assy ① . (1) Remove the left side cover. (See section 4.2.4) (2) Remove the stoppers (2 places) while pushing the arms (2 places) on MPT (2) Remove the six screws ①...
  • Page 86 4. Component replacement 4.2.20 Cover Assy front/ Board-RSF/MPT hopping roller/ Frame Assy separator/ Feeder Assy regist (1) Open the top cover. (2) Remove the plate shield and remove the connector. (See section 4.2.9) (3) Disengage the claws of stay L and remove the Cover-Assy-front ① . (4) Remove the E Ring ②...
  • Page 87 4. Component replacement 4.2.21 Plate-Driver/ Shaft-Liftup/ Hopping cover ⑧ (1) Remove the left side cover, right side cover, rear cover, top cover unit, feeder Assy regist. (See section 4.2.4, 4.2.3, 4.2.7, 4.2.12, 4.2.20) ⑨ (2) Remove CU PCB and PU PCB. (See section 4.2.9) ⑧...
  • Page 88 4. Component replacement 4.2.22 Plate-Assy-Side R/ Plate-Assy-Side L 4.2.23 Feed roller (1) Remove the plate driver,shaft-Liftup.(See section 4.2.21) (1) Remove the cassette. (2) Remove the three screws (silver, No:42920406) ① and remove the Plate-Assy- (2) Remove the latch and remove the feed roller (2 pieces) ① . Side R ②...
  • Page 89 4. Component replacement 4.2.24 Eject sensor/Micro-SW 4.2.25　Antenna (for wireless model only) (1) Remove the eject Assy. (See section 4.2.17) (1) Remove the FAX Unit.(See section 4.2.9) (2) Disengage the claws (2 places), and disassemble the Assy into guide eject (2) Remove the two clamp-cable and core and disconnect the connector. lower ①...
  • Page 90 4. Component replacement 4.2.26　Finisher (MC780dnf only) (1) Open the Scanner and remove the two screws ① . (2) Remove the cover connector ② by push the tab. (3) Disconnect the connector and remove the finisher unit ③ by pull at rear. ③...
  • Page 91 4. Component replacement 4.2.27　Stapler (MC780dn only) (1) Remove the plate shield. (See section 4.2.9). (2) Remove the two screws (silver, No:42920406) ① and remove the Staple ② . ② ① ×2 91 /...
  • Page 92 4. Component replacement 4.2.28　Tray-Assy-Document/Cover-ADF-R (4) Push the portion A. (Concurrent to push the (3) ) ② (1) Open the Cover-Assy-top-ADF. (2) Remove the Tray-Assy-Document ① by pull it in the direction arrow. Cover-assy-top-ADF ① (5) Remove the cover-ADF-R ② in the direction of the arrow. (3) Open the ADF-unit while pushing the portion B, and push the claw of cover- ②...
  • Page 93 4. Component replacement (4) Remove the ADF-unit ③ by insert the flat-blade screwdriver to gap between 4.2.29　ADF-unit ADF-unit ③ and flatbed-unit with pull the cables out of the Frame-Base(ADF) and Hinge. (1) Remove the cover-ADF-R. (See 4.2.24) (2) Detach a connector ① from the ADF relation board(7RL), and remove the screw (silver, No:42920406) ②...
  • Page 94 4. Component replacement 4.2.30　Sheet-document / Paper-weight-Assy / Spring-PW-ADF <Attention of affix the sheet-document> (1) Degrease the affix area of ADF-unit. (1) Open the ADF-unit. (2) Remove the peeling-off sheet. (2) Remove the sheet-document ① . (3) Set the sheet-document ① (see the figure below). (3) Remove two claws to remove the paper-weight-assy ②...
  • Page 95 4. Component replacement 4.2.31　Hinge-Assy-L / Hinge-Assy-R 4.2.32　ADF-Assy (1) Remove the three screws (black, No:42932708) ① and remove the hinge- (1) Remove the screw (silver, No:42920406) ① and remove the ADF board(7RL) ② . Assy-R ② . (2) Remove the four screws (black, No:42932706) ③ and remove the ADF-assy ④ . (2) Remove the three screws (black, No:42932708) ③...
  • Page 96 4. Component replacement 4.2.33　Guide-Retard / Roller / Motor / Clutch / Solenoid/ ⑩ Photo-sensor (1) Pull and remove Guide-Cable-ADF ① . ① Arrow A ⑮ ⑪ ⑦ ④ ⑫ (2) Remove the E-type retaining ring ② and remove the clutch ③ . (3) Remove the three screws (silver, No:42920406) ④...
  • Page 97 4. Component replacement 4.2.34　Cover-Assy-Top-ADF (1) Remove the ① with reference to 4.2.35. (2) Remove the four screws (black, No:42932708) ② and remove the Guide-Assy- Top(A) ③ . (3) Remove the Piece-Lock(Pickup) ④ ,Gear-Shaft-Hopping ⑤ ,Lever-SNS-Set ⑥ ,Spring-Lock(ADF-Top) ⑦ ,Lever-Lock(ADF) ⑧ ,Guide-Separator-Top ⑨ from Guide-Top(A) ③...
  • Page 98 4. Component replacement (7) Remove the Spring-Lock(Pickup) ① from Frame-Pickup ② by turn an A part of 4.2.35　Frame-Assy-Hopping-ADF Spring-Lock(Pickup) ① in the arrow direction and take it off the ditch B. ② (1) Open the ADF-Cover and remove from the ADF-Unit. ①...
  • Page 99 4. Component replacement 4.2.36　Guide-Assy-Retard 4.2.37　Flatbed-Unit (1) Remove the eight claws and remove the Guide-Retard(sub) ① . (1) Remove the five screws (black, No:42932706) ① and remove the cover- Bottom ② . (2) Remove the Cover-Retard(ADF) ② . (2) R e m ove t h e s c r ew ( s i l ve r, N o :42920406) ③ a n d r e m ove t h e p l a t e - (3) Remove the Frame-Assy Retard ③...
  • Page 100 4. Component replacement 4.2.38　Frame-assy-FB (1) Remove the five screws (silver, No:42920406) ① and remove the five screws (black, No:42932706) ② . (2) And remove the plate-shield-SU ③ . (3) Remove the all SU-board cables. (4) Remove the five screws (silver, No:42920406) ④ and remove the SU-board ⑤ . (5) Remove the screw (black, No:42932706) ⑥...
  • Page 101 4. Component replacement 4.3　Check the Scanner Mech Level and SU FW version Mech Level and SU FW version table When replacement the ADF Unit or ADF Assy or SU board, to check the Mech Mech Level Mark SU FW version Level.
  • Page 102 4. Component replacement 4.4 Oiling spots This chapter shows the oiling spots. Do not oil the other spots that are not shown here. It is not necessary to inject the machine-oil during disassembling. However, please add the specified oil when you wipe the oil off. Oiling operation (1) Oil type and name EM-30LP: MOLYKOTE...
  • Page 103 4. Component replacement 44259301PA Gear Assy.-HP -1 44259102PA Plate-Assy.-Side R EM-30L Class C Apply a normal amount of MOLYKOTE (EM-30LP) to the Holder-Gear-A whole circle of hatched areas. EM-30L Class C Apply a normal amount of MOLYKOTE (EM-30LP) to the whole circle of hatched areas.
  • Page 104 4. Component replacement -2 44259102PA Plate-Assy.-Side R -3 44259101PA Plate-Assy.-Side R EM-30L Class C Grease prohibition at the posts Apply a normal amount of MOLYKOTE (EM-30LP) to the end surface. Grease prohibition Grease prohibition at the gears Gear-LiftUp-Z121Z34 Gear-Idle-Exit (Z37) Spacer-Coupling Grease prohibition at the gears Gear-Idle-Heat_Z14-Z32...
  • Page 105 4. Component replacement -4 44259101PA Plate-Assy.-Side R -5 44259101PA Plate-Assy.-Side R EM-30LP Class C EM-30LP Class C Apply a normal amount of MOLYKOTE (EM-30LP) to the hatched area. Apply a normal amount of MOLYKOTE EM-30LP Class C (EM-30LP) to bearing portion. Apply a normal amount of MOLYKOTE (EM-30LP) to gear teeth tops.
  • Page 106 4. Component replacement 43074904PA Plate-Assy.-Side-L 42071401PA Holder Assy.-Regist-L EM-30LP Class C EM-30LP Class A Apply a normal amount of MOLYKOTE (EM-30LP) to the gear tooth tops. Apply a small amount of MOLYKOTE (EM-30LP) to the hatched areas. Gear-LiftUp-Z56 Post-GearIdle-L Link-LiftUp-L Holder-Regist-L Gear-LiftUp-Z32 EM-30LP Class A...
  • Page 107 4. Component replacement 44261901PA Feeder Assy.-Regist 44286901PA Fuser-Assy EM30LP Class C HP-300 Class C Apply a normal amount of MOLYKOTE (EM-30LP) to the hatching Apply a normal amount of HP-300 to the hatching areas. areas (Shaft). Roller-Pressure Cam-Release Roller-Regist-U 13mm Lever-Release EM30LP Class C Apply a normal amount of MOLYKOTE...
  • Page 108 4. Component replacement 45269001PA Guide-Assy. -Eject-U -1 44257901PA Printer Unit-FX757 EM-30LP Class C Apply a normal amount of MOLYKOTE (EM-30LP) to the tips of terminal. Plate-Assy.-Side-L Plate-Contact-TR Shaft-Assy.-Eject(FD) Application range of grease EM-30LP Class C Apply a normal amount of MOLYKOTE (EM-30LP) to the whole circle of gear teeth.
  • Page 109 4. Component replacement -2 44257901PA Printer Unit-FX757 44342001PA Belt-Assy EM-30LP Class A EM-30LP Class C Apply a small amount of MOLYKOTE Apply a normal amount of MOLYKOTE (EM-30LP) to (EM-30LP) to the inside of Bearing-TR (Belt). EM-30LP Class C the hatched areas. (Both sides, total 8 places) Apply a normal amount of MOLYKOTE (EM-30LP) to beaing...
  • Page 110 4. Component replacement 43917501PA Sensor Assy. -Color Regist 43081301PA Roller-Assy. -Idle(FD) Plate-Sensor-C.Regist EM-30LP Class A Apply a small amount of MOLYKOTE (EM30-LP) Exploded View to the hatched areas (Both side, 8 places). Method of amount grease The surface of Cover-Sensor-C.Regist Gear Assy.-Shutter should not be stained with MOLYKOTE.
  • Page 111 4. Component replacement 43301601PA Roller-Assy. -BIAS(FU)C -1 43894903PA Cassette-Assy-FX757 Plate-Receive EM-30LP Class B Shaft-Liftup Apply a small amount of MOLYKOTE (EM-30LP) to sliding portions of sheet metal and shaft (the hatched area). Method of amount grease Plate-Receive EM-30LP Class S After assemble to , apply a minimum amount of...
  • Page 112 4. Component replacement ⑭ 4537xxxxYA Scanner-Hinge -2 43894903PA Cassette-Assy-FX757 EM-30LP Class B Apply a small amount of MOLYKOTE (EM-30LP) to the hatched area.(2 palces) EM-D110 Class C Apply a normal amount of MOLYKOTE (EM-D110) to the hatched area. EM-30LP Class B Apply a small amount of MOLYKOTE (EM-30LP) to the hatched area.
  • Page 113 Maintenance Menu Adjustment of this printer can be performed from the Maintenance Utility by entering the corresponding menu from the keyboard of the operator panel. This printer contains the maintenance menu in addition to the normal operation menus. Select an appropriate menu in accordance with the objective of adjustment.
  • Page 114 5. Maintenance Menu 5.1 Maintenance Utility The adjustments described in table 5-1 should be made by using Maintenance Utility. Section in Operation from Maintenance operator panel The following details the utility: Option Adjustment Utility (section in this Operating maintenance Manual manual) (1) Maintenance Utility Operating Manuals: 3 Factory/...
  • Page 115 5. Maintenance Menu 5.2 Maintenance menu functions 5.2.1 Self-diagnostic mode (1) How to select the menu items Menu items can be selected by pressing of [4] or [ ＊ ], or by LEVEL0 XXXX pressing of [2] or [8]. This section describes the self-diagnostic LEVEL 0 and LEVEL 1 respectively. Menu items can be selected by pressing either [2] or [8] key.
  • Page 116 5. Maintenance Menu (1) How to select the menu items Menu items can be selected by pressing either [2] or [8] key, and executed by pressing [6]. LEVEL1 XXXXX XXXXX Menu items can be entered by pressing of [6] or [4], and can be selected by pressing of [2] or [8]. The test can be executed by pressing [6], and can be exited by pressing [4].
  • Page 117 5. Maintenance Menu 5.2.1.2 Ordinary self-diagnostic mode (level 1) 5.2.1.2.1 How to enter the self-diagnostic mode (level 1) Menu items of the ordinary self-diagnostic mode are shown below. While pressing the [6] and [8] keys, simultaneously, turn on the power to enter Item Self-diagnostic menu Adjustment contents...
  • Page 118 5. Maintenance Menu 5.2.1.3 Switch scan test This self-diagnostic menu is used to check the entry sensor and the switch. Enter the self-diagnostic mode (level 1) and press the [2], [8] key until "SWITCH SCAN" is displayed in the upper row of the display area. (Pressing the [2] key increments the test item and pressing the [8] key decrements the test item.) RFID COLOR C Press [6] when displayed "SWITCH SCAN"...
  • Page 119 5. Maintenance Menu Table 5-2 SWITCH SCAN details <Item having no function> Asterisk mark (*) is displayed in the lower row of display area. * 1: “L” is displayed when the cover is opened. * 2: "Sensor read value" is displayed when LCF is installed. "*" is displayed when LCF is uninstalled. Display area, upper row Display area, Display area,...
  • Page 120 5. Maintenance Menu 5.2.1.4 Motor clutch test This self-diagnostic menu is used to test the motor and clutch. 1. Enter the self-diagnostic mode (level 1) and press the [2], [8] key until "MOTOR&CLUTCH TEST" is displayed in the upper row of the display area. (Pressing the [2] key increments the test item and pressing the [8] key ID motor decrements the test item.)
  • Page 121 5. Maintenance Menu Table 5-3 Note! Display while ID Up/Down execution is in progress Unit name display Drive restriction condition Remarks MOTOR & CLUTCH TEST ID MOTOR To be driven when all of the ID (K/Y/M/C) are − ID UP/DOWN removed.
  • Page 122 5. Maintenance Menu 5.2.1.5 Test print Display Setting value Function PRINT EXECUTE – Pressing the [6] key starts print/Pressing the [#] key This self-diagnostic menu is used to print the test pattern that is built inside PU. Other test terminates print. (In units of page) patterns are stored in the controller.
  • Page 123 5. Maintenance Menu While the message "PRINT EXECUTE" that is set by the operation specified in step 2 is being displayed, press the [6] key and the test print is executed with the setting value that has been set by steps 2 and 3. Pressing the [#] key stops the test print.
  • Page 124 5. Maintenance Menu • During printing, the following messages are displayed. • Displays are switched by pressing the [2] key. P=*** ETMP=***UTMP=*** W=*** REG=****EXT=*** P : Number of test print copies (unit: copies) ETMP : Hopping motor constant speed correction parameter W : Print waiting time (unit: second) (environment temperature) [unit: DEC] UTMP : Fuser motor constant speed correction parameter...
  • Page 125 5. Maintenance Menu • Displays are switched by pressing the [2] key. TR1:k**y**m**c** TR2:k**y**m**c** TRl : Transfer voltage parameter VTR1 table ID number [unit: HEX] TR2 : Transfer voltage parameter VTR2 table ID number [unit: HEX] • Displays are switched by pressing the [2] key. TROFF:** BELT xxx(***) TROFF : Transfer OFF voltage setting table ID number [unit: HEX]...
  • Page 126 5. Maintenance Menu 5.2.1.6 Color registration correction test When the [#] key is pressed while test is in progress (while the [DATA] lamp is lighting), the screen returns to the state of step 2. This self-diagnostic menu item is used for the color registration error adjustment and to <<During execution of REG ADJ RESULT>>...
  • Page 127 5. Maintenance Menu Repeat steps 2 and 3 as required. 5.2.1.7 Density correction test Pressing the [4] terminates the test. (Returns to the status of step 1.) This self-diagnostic menu item is used to test the density correction function of a printer, Color registration correction test items and to refer to result of the test execution.
  • Page 128 5. Maintenance Menu When the [#] key is pressed while test is in progress (while the [DATA] lamp is Pressing the [4] key terminates the test. (Returns to the status of step 1.) lighting), the screen returns to the state of step 2. Density correction test items <<During execution of DENS ADJ RESULT>>...
  • Page 129 5. Maintenance Menu 5.2.1.8 Consumable item counter display Display area, Display area, Format Unit Details upper row lower row This self-diagnostic menu is used to display the consumption status of the consumable K-STC MODE ********TIMES Times Number of print dot counts of the items.
  • Page 130 5. Maintenance Menu 5.2.1.9 Number of print copies counter display 5.2.1.10 Switching between the Factory mode and the Shipping mode This self-diagnostic menu is used to display status of the number of copies of a printer. This self-diagnostic menu item is used to switch between the Factory mode and the Shipping mode.
  • Page 131 5. Maintenance Menu 5.2.1.11 Self-diagnostic function setting Operation at the Display Setting value Function setting value This self-diagnostic menu is used to set valid/invalid of the error detection by the various ID UNIT ENABLE Checks Valid/Invalid of ID installation check sensors.
  • Page 132 5. Maintenance Menu 5.2.1.12 LED head serial number display This self-diagnostic menu item is used to check whether the downloaded LED head data matches the serial number of the actual LED head. Enter the self-diagnostic mode (level 1) and press the [2], [8] key until "LED HEAD DATA"...
  • Page 133 5. Maintenance Menu 5.2.2 How to enter the Scanner Maintenance Menu (1) Press the [6] key & [8] key when the MFP power is turned on. Basic key assignmenet in the Scanner Maintenance Menu (2) Press the [1] key when the "Select Number" is displayed. ↑...
  • Page 134 5. Maintenance Menu (3) Display "Scanner Maint" as the Scanner Maintenace Menu show below. Default Default Default Value Item1 Item2 Item3 Item4 value value value Notes (Step) Scanner Adjust Scan Side Reg. +42 ~ 0 Adjust the scanning start position of main scanning direction when book scanning. Maint Front Edge +30 ~ -30 During book scanning, add a value for the basic value (= 5 mm) when reading the...
  • Page 135 5. Maintenance Menu 5.3 Setups upon completion of part replacement 5.3.1 Precautions when replacing the PU board The adjustments that are required upon completion of part replacement are described below. Replacement parts Adjustment contents W h e n a c c e s s t o t h e E E P RO M o f t h e b o a r d t o r e m ove i s p o s s i bl e. (When the SERVICE CALL 104 [Engine EEPROM Error] is not displayed:) LED head See note.
  • Page 136 5. Maintenance Menu When access to the EEPROM of the board to remove is impossible. When the board is replace with the new board, the new board has been set in the Factory working mode. Therefore, it should be switched to the Shipping If the SERVICE CALL 104 [Engine EEPROM Error] is displayed on the operator mode.
  • Page 137 5. Maintenance Menu 5.4 Density control manual setting When a printer is shipped from the factory, the automatic density correction mode has been set in "Automatic". If a printer is used after the density correction mode is set to "Manual", density may change during usage of a printer. Actions to be taken when density is not normal.
  • Page 138 Periodic Maintenance 6.1 Cleaning ..................139 6.2 How to clean the LED lens array ..........140 6.3 How to clean the pickup roller ............142 6.4 How to clean the paper feed rollers for MP Tray ......143 6.5 How to clean the rollers in the ADF ...........144 6.6 How to clean the document rollers in the ADF ......145 6.7 How to clean the document glass ..........146 6.8 How to clean inside of MFP ............147...

  • Page 139: Cleaning

    6. Periodic Maintenance 6.1 Cleaning Clean inside and outside of the MFP with clean dry cleaning cloth and small vacuum cleaner (hand cleaner) as required. Note! Be careful not to touch the image drum terminals, the LED lens array and the LED head connectors.

  • Page 140: How To Clean The Led Lens Array

    6. Periodic Maintenance 6.2 How to clean the LED lens array Perform cleaning of the LED head. If the white banding, white stripe (white drop-out, light printing) in the vertical direction occurs on the print surface, clean the LED lens array. If any light print or white banding is recognized or if print character becomes blurred, clean the LED head as descried below.
  • Page 141 6. Periodic Maintenance (3) Wipe the lens surface (at the four positions) of the LED head with soft tissue paper gently and lightly. Note! ・Do not use the solvents such as methyl alcohol or thinner for cleaning the LED head lens because they can damage the LED head. ・When use OA cleaner, wipe out authenticity.

  • Page 142: How To Clean The Pickup Roller

    6. Periodic Maintenance 6.3 How to clean the pickup roller If the vertical banding in the vertical direction occurs on the print surface, clean the pickup (3) Clean the separation roller of the paper tray with a clean cloth wrung out roller.

  • Page 143: How To Clean The Paper Feed Rollers For Mp Tray

    6. Periodic Maintenance 6.4 How to clean the paper feed rollers for MP Tray (1) Open the MP tray. (3) Wipe the paper feed roller with a soft cloth lightly moistened with water. Feed roller Multi-paper tray (4) Close the cover of the paper feed roller. (2) While pressing the tab of the paper feed roller cover to the right, open the cover.

  • Page 144: How To Clean The Rollers In The Adf

    6. Periodic Maintenance 6.5 How to clean the rollers in the ADF (4) Wipe the document feeding rollers with a soft cloth lightly moistened with water. If the document feeding rollers in the ADF are contaminated with ink, toner particles or Wipe the whole surface of the roller while turning it with your hand.

  • Page 145: How To Clean The Document Rollers In The Adf

    6. Periodic Maintenance 6.6 How to clean the document rollers in the ADF (1) Open the document glass cover. (3) Wipe the rollers with a soft cloth lightly moistened with water. Document glass cover Roller Roller (4) Return the document hold pad. (2) Pull lever and open the document hold pad.

  • Page 146: How To Clean The Document Glass

    6. Periodic Maintenance 6.7 How to clean the document glass It is recommended to clean the document glass once a month to maintain image quality of the printouts. (1) Open the document glass cover. (2) Wipe the document holding pad, document glass and ADF document glass surface with a soft cloth lightly moistened with water.

  • Page 147: How To Clean Inside Of Mfp

    6. Periodic Maintenance 6.8 How to clean inside of MFP Clean inside of the MFP. (3) Remove the image drum cartridge. 1. Remove the four image drum cartridges and place them on a flat workbench. Toner can adhere to the metal shaft located in between the fuser and the cyan image 2.
  • Page 148 6. Periodic Maintenance (4) Remove the fuser unit. (5) Clean the metal shaft with soft clean cloth or soft tissue paper. Personal injuries may occur. The fuser unit gets very hot. Be very careful not to touch the fuser unit with your hands. If it got hot, stop the work and wait until it cools down.
  • Page 149 Troubleshooting and repair procedure 7.1 Before starting the repair work ..........150 7.2 Confirmation items before taking corrective action against abnormalities ................150 7.3 Precautions when taking corrective action against abnormality 150 7.4 Preparation for troubleshooting ..........150 7.5 Troubleshooting method ............151 7.6 Fuse check ................206 7.7 Paper cassette switches versus Paper size correspondence table ..............207...
  • Page 150 7. Troubleshooting and repair procedure 7.1 Before starting the repair work (1) Confirm the basic check/inspection points described in User’s Manual. (2) Get the information/status from client at the time when the trouble has occurred as much in details as possible (3) Create the status close to the user’s status when the trouble has occurred, and inspect a printer in that status.
  • Page 151 7. Troubleshooting and repair procedure 7.5 Troubleshooting method 7.5.1 Error code list When a trouble occurs in this printer, perform troubleshooting by following the steps described below. Note! For the error codes not described in this manual, refer to the Software Guide. Trouble occurs Error Code Details 3DE1...
  • Page 152 7. Troubleshooting and repair procedure Error Code Details Error Code Details C46B Compensation heater temperature low D303 Magenta toner is empty C4C0 Fuser unit fuse cut error D304 Yellow toner is empty C4E3 Fuser motor lock error D30D Waste toner full (Cyan) C4FA Paper rolled around fuser D30E...
  • Page 153 7. Troubleshooting and repair procedure Error Code Details Error Code Details D404 Tray4 missing (cassette missing) E722 RADF JAM - too long paper detect D518 Yellow toner cartridge not installed E723 RADF JAM - too short paper detect D901 Black drum missing E724 RADF JAM - remained scan sensor D902...
  • Page 154 7. Troubleshooting and repair procedure 7.5.2 Printer error troubleshooting Error code Cause Error details Remedial measure CE51 Environment Turn off the power Error code Cause Error details Remedial measure humidity is of the printer and abnormal./ back on. C5A1 Read/write Turn off the power Humidity Does this error recur?
  • Page 155 7. Troubleshooting and repair procedure Error code Cause Error details Remedial measure Error code Cause Error details Remedial measure CE82~ LED head Is the LED head connected Install the LED C3B3~ Toner sensor Is the toner cartridge installed? Install the toner CE85 detection normally?
  • Page 156 7. Troubleshooting and repair procedure Error code Cause Error details Remedial measure Error code Cause Error details Remedial measure C468 The backup Turn on the power C37A~ Abnormal Is the cable from belt thermistor Re-connect the roller again. C37D temperature to the high voltage board cables normally.
  • Page 157 7. Troubleshooting and repair procedure Error code Cause Error details Remedial measure Error code Cause Error details Remedial measure F042 Error due Two or more toner cartridges of Install the cartridge D108 When LCF can not Lift up. Set the Paper of to detection the same color are detected.
  • Page 158 7. Troubleshooting and repair procedure Error code Cause Error details Remedial measure Error code Cause Error details Remedial measure E120 Indicates that jam has occurred E160 Occur jam with the Tray4 Take out the jammed paper. during feeding paper from the Change the Frame MP tray.
  • Page 159 7. Troubleshooting and repair procedure Error code Cause Error details Remedial measure E57A Occur Duplex jam and Paper on Take out the the Entry Path jammed paper. Change the Duplex Unit. E580 Indicates that jam has occurred Take out the in the vicinity of Duplex unit.
  • Page 160 7. Troubleshooting and repair procedure 7.5.3 Scanner error troubleshooting System Spec. Code Category Cause Error details Measure System Spec. E722 Error ADF document Regist paper sensor stuck jam/detection Open the ADF cover, Code Category Cause Error details Measure of out-of-spec oversized documents – remove every jammed Once the regist paper sensor becomes document from the paper...
  • Page 161 7. Troubleshooting and repair procedure System Spec. System Spec. Code Category Cause Error details Measure Code Category Cause Error details Measure E728 Error ADF document Detection of chattering of a sensor Open the ADF cover, C280 ServiceCall Scanner home The home position sensor does not Power cycle the unit.
  • Page 162 7. Troubleshooting and repair procedure 7.5.4 Preparation for troubleshooting Paper size error (error code E061, E062, E063, E064, E065) ......187 (9-1) Jam occurs when paper end is located near the IN1 sensor....187 LCD display error ....................163 (10) ID unit Up/Down error (Service call CE7A) ............188 (1-1) LCD does not display anything.

  • Page 163: Lcd Display Error

    7. Troubleshooting and repair procedure 7.5.4. (1) LCD display error Action to be taken Check item Check work Memo For the numbers from ① through  after name of the respective connectors, at NG refer to section 7.5.4 (19) "Wiring diagram". (1-1-3) Check the peripherals of the power supplies (1-1) LCD does not display anything.

  • Page 164: Abnormal Operations Of Printer After The Power Is Turned On

    7. Troubleshooting and repair procedure 7.5.4. (2) Abnormal operations of printer after the power is turned on (2-2) Abnormal sound is heard. (2-1) Any operation does not start at all. Action to be taken Check item Check work at NG Action to be taken Check item Check work...

  • Page 165: Bad Odors Are Generated

    7. Troubleshooting and repair procedure (2-3) Bad odors are generated. Action to be taken Check item Check work at NG Action to be taken Check item Check work at NG (2-2-3) Check the jumping phenomena of gear tooth. (Abnormal load of the consumable item) (2-3-1) Locating the exact position of generating bad odor Operating conditions Check if operations of the respective motors are...
  • Page 166 7. Troubleshooting and repair procedure (3) Paper Jams JAM location of occurrence outline chart When paper jams occur or paper remains in the printer, "Paper Jam", or "Paper Remain" is displayed on the operation panel. A method to remove the paper is displayed, remove the paper in the printer according to (E120:MISS FEED AT (E020:EXIT) [Handling].
  • Page 167 7. Troubleshooting and repair procedure (3) Return the tray to the printer. Open Cassette Open Cassette Paper Remain Paper Jam [Tray Name] [Tray Name] When the above messages are displayed. Tray1 is applied here as an example. (1) Pull the displayed tray. (4) Open and close the scanner and top cover.
  • Page 168 7. Troubleshooting and repair procedure (3) Slowly pull out the jammed paper. Open Cover Open Cover If you see the top edge of paper If you do not see the top edge of paper Paper Remain Paper Jam Front Cover Front Cover When the above messages are displayed.
  • Page 169 7. Troubleshooting and repair procedure (3) Uninstall the four image drum cartridges and put them on a flat table. Open Cover Open Cover Starter toner cartridge Paper Remain Paper Jam Top Cover Top Cover Image drum cartridge When the above messages are displayed. (1) Open the top cover.
  • Page 170 7. Troubleshooting and repair procedure (b) If you do not see the top edge of paper Set the fuser unit in the printer body and fold backward the lock lever (2 levers). Lock lever of the fuser unit (Blue) Pull up the jammed paper slowly while pushing the jam release lever of the fuser unit.
  • Page 171 7. Troubleshooting and repair procedure (3) Close the Duplex unit cover. Check Duplex Unit Check Duplex Unit Paper Remain Paper Jam When the above messages are displayed. (1) Hold and press down the jam release lever of the Duplex unit to open the Duplex unit cover.
  • Page 172 7. Troubleshooting and repair procedure If jam occur the Inner Finisher(MC780dnf only) (4) Close the Finisher cover. (1) Open the Scanner. Scanner Handle (5) Return the Scanner. (2) Open the Finisher cover. Cover (3) Release jammed paper. 172 /...
  • Page 173 7. Troubleshooting and repair procedure Document Jam If the edge of the document can been seen under the paper guide, lift the paper guide and then pull out the document. In the Duplex Paper Path (1) While opening the ADF cover, pull out the document from the duplex paper path. paper guide If the edge of the document cannot be seen in the ADF, lift the document tray and then pull out the document.
  • Page 174 7. Troubleshooting and repair procedure If jam occur the Staple in the Inner Finisher(MC780dnf only) (4) Pull down the guide, pay attention to staple. (1) Open the Scanner. Scanner Handle (5) Remove the staple sheet of the top. (2) Open the Finisher cover. Cover (6) Return to the guide.
  • Page 175 7. Troubleshooting and repair procedure (8) Close the Finisher cover. If jam occur the Staple in the Offline stapler(MC780dn only) (1) Open the offline stapler cover. (9) Return to the Scanner. (2) Remove the cartridge and remove the staple. (3) Return the cartridge. (4) Close the offline stapler cover.

  • Page 176: Paper Feed Jam (Error Code E130: 1St Tray)

    7. Troubleshooting and repair procedure 7.5.4. (3) Paper feed jam (error code E130: 1st tray) (3-2) Jam occurs immediately after the paper feed is started. (1st tray) (3-1) Jam occurs immediately after the power is turned on. (1st tray) Action to be taken Check item Check work at NG...
  • Page 177 7. Troubleshooting and repair procedure Action to be taken Action to be taken Check item Check work Check item Check work at NG at NG (3-2-4) Check the system connection (3-2-6) Check the system connection Paper feed motor Check the connection condition of the cable. Replace the Paper feed clutch Check the connection condition of the cable.

  • Page 178: Feed Jam (Error Code E202)

    7. Troubleshooting and repair procedure 7.5.4. (4) Feed jam (error code E202) (4-2) Jam occurs immediately after the paper feed is started. (4-1) Jam occurs immediately after the power is turned on. Action to be taken Check item Check work at NG Action to be taken Check item...

  • Page 179: Paper Feed Jam (Error Code E120: Multipurpose Tray)

    7. Troubleshooting and repair procedure 7.5.4. (5) Paper feed jam (error code E120: Multipurpose tray) Action to be taken Check item Check work at NG (5-1) Jam occurs immediately after the power is turned on. (Multipurpose tray) (4-2-4) Check the system connection Action to be taken Check item Check work...

  • Page 180: Jam Occurs Immediately After Paper Feed Is Started

    7. Troubleshooting and repair procedure (5-2) Jam occurs immediately after paper feed is started. (Multipurpose tray) Action to be taken Check item Check work at NG Action to be taken Check item Check work at NG (5-2-3) Motor operation check (5-2-1) Check condition of the paper running path Paper feed motor Confirm that the paper feed motor works...

  • Page 181: Paper Running Jam (Error Code E010)

    7. Troubleshooting and repair procedure 7.5.4. (6) Paper running jam (error code E010) (6-2) Jam occurs immediately after a paper is taken into printer. (6-1) Jam occurs immediately after the power is turned on. Action to be taken Check item Check work at NG Action to be taken...

  • Page 182: Jam Occurs In The Middle Of Paper Running Path

    7. Troubleshooting and repair procedure (6-3) Jam occurs in the middle of paper running path. Action to be taken Check item Check work at NG Action to be taken Check item Check work at NG (6-2-4) Check the system connection (6-3-1) Motor operation check Paper feed motor Check the connection condition of the cables.

  • Page 183: Jam Occurs Immediately After Paper Has Reached The Fuser

    7. Troubleshooting and repair procedure (6-4) Jam occurs immediately after paper has reached the fuser. 7.5.4. (7) Paper unloading jam (error code E020) (7-1) Paper unloading jam occurs immediately after the power is turned on. Action to be taken Check item Check work at NG Action to be taken...

  • Page 184: Paper Unloading Jam Occurs After A Paper Is Taken Into Printer

    7. Troubleshooting and repair procedure Action to be taken Action to be taken Check item Check work Check item Check work at NG at NG (7-1-4) Check the system connection (7-2-2) Check condition of the mechanical parts Signal cable for relay Check that FFC is normally inserted at the Normalize the Sensor lever of the...

  • Page 185: Paper Unloading Jam Occurs In The Middle Of Paper Running Path

    7. Troubleshooting and repair procedure (7-3) Paper unloading jam occurs in the middle of paper running path. 7.5.4. (8) Two-sided printing jam (error code: E580, E520, E110, E570) (8-1) Two-sided printing jam occurs immediately after the power is turned on. Action to be taken Check item Check work...

  • Page 186: Two-Sided Printing Jam Occurs During Taking In The Paper Into Duplex Unit

    7. Troubleshooting and repair procedure (8-2) Two-sided printing jam occurs during taking in the paper into Duplex unit. Action to be taken Check item Check work at NG Action to be taken Check item Check work at NG (8-2-4) Motor operation check (8-2-1) Solenoid operation check Duplex motor Confirm that the Duplex solenoid works normally...

  • Page 187: Two-Sided Printing Jam Occurs During Transporting Paper Inside The Duplex Unit

    7. Troubleshooting and repair procedure (8-4) Two-sided printing jam occurs during transporting paper inside the Duplex unit. 7.5.4. (9) Paper size error (error code E061, E062, E063, E064, E065) (9-1) Jam occurs when paper end is located near the IN1 sensor. Action to be taken Check item Check work...

  • Page 188: Id Unit Up/Down Error (Service Call Ce7A)

    7. Troubleshooting and repair procedure 7.5.4. (10) ID unit Up/Down error (Service call CE7A) Action to be taken Check item Check work at NG (10-1) Error occurs during the Up movement of the ID unit (10-1-3) Sensor check Action to be taken Check item Check work at NG...

  • Page 189: Fuser Unit Error (Error C41A,C41B,C449,C446,C41C,C41D,C468,C466)

    7. Troubleshooting and repair procedure 7.5.4. (11) Fuser unit error (error C41A,C41B,C449,C446,C41C,C41D,C468,C466) Action to be taken Check item Check work at NG (11-1) Error occurs immediately after the power is turned on. (11-2-2) Temperature increase of fuser unit Action to be taken Check item Check work at NG...

  • Page 190: Motor Fan Error (Error Code C0A2, C0A1, C0A5, C0A6)

    7. Troubleshooting and repair procedure 7.5.4. (12) Motor fan error (error code C0A2, C0A1, C0A5, C0A6) (12-3) All fans of the printer do not rotate. (12-1) The low voltage power supply fan does not rotate immediately after the power is turned on. Action to be taken Check item Check work...

  • Page 191: Print Speed Is Slow. (Performance Is Low.)

    7. Troubleshooting and repair procedure 7.5.4. (13) Print speed is slow. (Performance is low.) 7.5.4. (14) Option unit cannot be recognized. (13-1) Print speed decreases. (14-1) Duplex unit cannot be recognized. Action to be taken Action to be taken Check item Check work Check item Check work...

  • Page 192: Lcf Unit Cannot Be Recognized

    7. Troubleshooting and repair procedure (14-3) LCF unit cannot be recognized. Action to be taken Check item Check work at NG Action to be taken Check item Check work at NG (14-2-2) Check the system connection (14-3-1) LCF board Check the system Check that the cable between the PU board Correct the connection from...

  • Page 193: Led Head Cannot Be Recognized. (Error Code Ce82, Ce83, Ce84, Ce85)

    7. Troubleshooting and repair procedure 7.5.4. (15) LED head cannot be recognized. (error code CE82, CE83, CE84, CE85) (15-1) Service call CE82 to CE85 (LED HEAD Missing) Action to be taken Check item Check work at NG (15-1-1) Check the system connection Connecting condition Check the connecting condition of the FFC by Correct the...

  • Page 194: Toner Cartridge Cannot Be Recognized. (Error Code C3B3,C3A3,C393,C383)

    7. Troubleshooting and repair procedure 7.5.4. (16) Toner cartridge cannot be recognized. (error code C3B3,C3A3,C393,C383) Note! Toner sensor operation check method using the SWITCH SCAN function of the self-diagnostic mode. (16-1) Error caused by the consumable items. (1) How to check operation of the toner sensor at the printer side. Action to be taken Check item Check work...

  • Page 195: Error Caused By The Defective Mechanism

    7. Troubleshooting and repair procedure (16-3) Error caused by the defective mechanism 7.5.4. (17) Fuse cut error (error codes C3EA,C3EB,C3EC,C3ED,C3E2,C4C0) (17-1) Fuse cut error Action to be taken Check item Check work at NG Action to be taken Check item Check work at NG (16-3-1) Mechanical load applied to the ID unit...

  • Page 196: Humidity Sensor Error (Error Code Ce51)

    7. Troubleshooting and repair procedure 7.5.4. (18) Humidity sensor error (error code CE51) 7.5.4. (19) LCF Paper feed jam (error code E190) (18-1) Humidity sensor error (19-1) LCF paper feed jam occurs immediately after the power is turned on. Action to be taken Action to be taken Check item Check work...

  • Page 197: Jam Occurs Immediately After The Paper Feed Is Started

    7. Troubleshooting and repair procedure (19-2) LCF paper feed jam occurs immediately after the paper feed is started. Action to be taken Check item Check work at NG Action to be taken Check item Check work at NG (19-2-4) Check condition of the electrical parts (19-2-1) Check condition of the paper running path Remove the MOTOR connector of the LCF board Check the LCF...

  • Page 198: Wiring Diagram

    7. Troubleshooting and repair procedure 7.5.4. (20) Wiring diagram Scan sensor Duplex unit Cover open Front Bottom Regist sensor sensor sensor sensor sensor HOP sensor Printer main unit Reverse sensor Clutch Cover Open sensor relation Paper Set sensor solenoid board Unit-CIS Clutch SNS03...
  • Page 199 7. Troubleshooting and repair procedure 7.5.5 Troubleshooting the abnormal images Color has faded-out and blurred entirely. (Refer to Figure 7-2A.) .......200 (1-1) Color are faded-out and blurred...............200 Stain on white print (Refer to Figure 7-2B.) ............201 (2-1) Stain on white print (Partial stain) .............201 (2-2) Stain on white print (overall stain) .............201 White print (Refer to Figure 7-2C.) ..............202 (3-1) White print over entire page ..............202...

  • Page 200: Color Has Faded-Out And Blurred Entirely. (Refer To Figure 7-2A.)

    7. Troubleshooting and repair procedure 7.5.5.(1) Color has faded-out and blurred entirely. (Refer to Figure 7-2A.) Action to be taken Check item Check work at NG (1-1) Color are faded-out and blurred. (1-1-5) ID unit installation condition Action to be taken Check item Check work at NG...

  • Page 201: Stain On White Print (Refer To Figure 7-2B.)

    7. Troubleshooting and repair procedure 7.5.5.(2) Stain on white print (Refer to Figure 7-2B.) (2-2) Stain on white print (overall stain) (2-1) Stain on white print (Partial stain) Action to be taken Check item Check work at NG Action to be taken Check item Check work at NG...

  • Page 202: White Print (Refer To Figure 7-2C.)

    7. Troubleshooting and repair procedure 7.5.5.(3) White print (Refer to Figure 7-2C.) Action to be taken Check item Check work at NG (3-1) White print over entire page (3-1-3) High voltage terminal Action to be taken Check item Check work at NG ID unit terminal Check that the high voltage terminal of the ID...

  • Page 203: Black Banding/Black Streaking In Vertical Direction

    7. Troubleshooting and repair procedure 7.5.5.(4) Black banding/black streaking in vertical direction 7.5.5.(5) Cyclic abnormality (Refer to Figure 7-2E.) (4-1) Thin vertical line (with color) (Refer to Figure 7-2D.) (5-1) Cyclic abnormality occurs in vertical direction Action to be taken Action to be taken Check item Check work...

  • Page 204: Heavy Color Registration Error

    7. Troubleshooting and repair procedure 7.5.5.(6) Heavy color registration error (6-3) Though the color registration correction test(REG ADJUST TEST) in self-diagnostic mode is NG. (6-1) Display of the message "Color adjustment is in progress" appears only short time. Action to be taken Check item Check work Action to be taken...

  • Page 205: Entirely Black Print

    7. Troubleshooting and repair procedure 7.5.5.(7) Entirely black print (7-1) All black print over entire page Action to be taken Check item Check work at NG (7-1-1) High voltage contacting condition CH terminal Check that the terminal coming from the printer Replace the body contacts with the high voltage terminal that terminal of...
  • Page 206 7. Troubleshooting and repair procedure 7.6 Fuse check If the following error is issued, check the corresponding fuse of the PU/SU control board and high voltage power supply board. (Refer to Table 7-6.) Table 7-6 Fuse error Error Description Fuse Insert Point Resistance Name...
  • Page 207 7. Troubleshooting and repair procedure 7.7 Paper cassette switches versus Paper size correspondence table (1)TRAY1~4 (2)LCF Dial display size Bit No. Dial display size Bit No. TRAY1~4 Cassette: none Cassette:none Legal 14" Legal 13.5" Legal 13.5" Blank Legal 13" Legal 13" Letter Blank Executive...
  • Page 208 Connection diagrams 8.1 Resistance value check .............209 8.2 Parts location ................214...
  • Page 209 8. Connection diagrams 8.1 Resistance value check Unit Electrical circuit diagram, connection Part outside view Resistance value Transport belt Between pin-1 and pin-2: 3.4Ω motor Between pin-3 and pin-4: 3.4Ω ID motor Across both ends of IP2 and IP3: 1Ω or less 209 /...
  • Page 210 8. Connection diagrams Unit Electrical circuit diagram, connection Part outside view Resistance value Between pin-1 and pin-2: 6.1Ω ID up/down motor Between pin-3 and pin-4: 6.1Ω Fuser unit motor Across both ends of IP1 and IP2: 1Ω or less 210 /...
  • Page 211 8. Connection diagrams Unit Electrical circuit diagram, connection Part outside view Resistance value Between pin-1 and pin-2: 3.4Ω Feed motor Between pin-3 and pin-4: 3.4Ω Both-sided print Between pin-1 and pin-2: 3.2Ω motor Between pin-3 and pin-4: 3.2Ω 2nd / 3rd/ 4th tray Between pin-1 and pin-2: 2.8Ω...
  • Page 212 8. Connection diagrams Unit Electrical circuit diagram, connection Part outside view Resistance value LCF Hopping Between pin-1 and pin-2: 2.8Ω Motor Between pin-3 and pin-4: 2.8Ω 1pin Between pin-1 and pin-2:17 ～ 23Ω LCF Liftup Motor 2pin 212 /...
  • Page 213 8. Connection diagrams Unit Electrical circuit diagram, connection Part outside view Resistance value Upper roller heater #1 Between pins -1 and -6: Several ohms to several ten ohms B - 6 Between pins -1 and -6: Several ohms to several ten ohms Upper roller heater #2 Between pins -4 and...
  • Page 214 8. Connection diagrams 8.2 Parts location (1) CU PCB Component side Soldering side 214 /...
  • Page 215 8. Connection diagrams (2) PU PCB Soldering side Component side DCIDR IDFAN 44973399 C118 HEAD0K R239 HEAD1Y CP10 R231 RM36 Board-7PU IC21 HEAD2M RM34 RM35 IC20 C640 RM32 RM33 RM30 RM31 HEAD3C RM25 IC18 RM526 RM20 RM524 R759 RM16 R762 IC16 R658 R655...
  • Page 216 8. Connection diagrams (3) Rellay PCB Component side FUSER DENS TAWAMI Rellay PCB　IBY 44559899 Soldering side BFUSE BFUCUT 216 /...
  • Page 217 8. Connection diagrams (4) Duplex Print Control PCB Component side Soldering side JP19 MAIN1 D514 D513 D512 D511 C540 JP23 R602 C541 R501 R601 C520 JP16 R600 JP24 C519 JP20 R599 R502 C537 JP25 C518 R836 R835 R546 R832 JP12 JP26 R504 R505...
  • Page 218 8. Connection diagrams (5) Second Tray Control PCB Soldering side Component side JP19 MAIN1 D514 D513 D512 MAIN2 D511 C540 JP23 R602 C541 R501 R601 JP16 C520 R600 JP24 C519 JP20 R599 C537 C518 R835 R546 R832 JP12 JP26 JP32 JP15 C502 R591...
  • Page 219 8. Connection diagrams (6) Toner Low Sensor PCB (7) Front sensor PCB SSNS (8) Color Adjustment Sensor PCB 219 /...
  • Page 220 8. Connection diagrams (9) High-Voltage Power Supply PCB (10) Low-Voltage Power Supply PCB TR-K TR-Y TR-M TR-C 220 /...
  • Page 221 8. Connection diagrams (11) ID unit (12) Transfer belt unit ID unit (for consumable parts) Transfer belt unit (for consumable parts) Contactor point Contactor point Fuse Fuse Toner Low Sensor PCB (PRZ PCB) Relay PCB Contactor point ID unit Contactor point Transfer belt unit Fuse 221 /...
  • Page 222 8. Connection diagrams (13) SU Board Soldering side Component side CUIF 44973499 C704 C703 R375 R374 C702 C701 R321 R322 R323 R324 C700 C699 R317 R318 R319 R320 R313 R314 R315 R316 C698 C697 R309 R310 R311 R312 C696 C695 R302 R303 R304...
  • Page 223 8. Connection diagrams (14) Environment SNS (16) LCF PCB Component side JP29 JP30 JP32 JP31 SNS01 SNS02 JP28 JP26 Board-GOI JP21 JP18 JP14 JP15 HSNS JP10 45339299 GDDC Soldering side (15) ADF relation board Q506 TR503 SNSIF 45339299 44997899 223 / 223...

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