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Table of Contents

   Related Manuals for Xerox WorkCentre Pro 423

   Summary of Contents for Xerox WorkCentre Pro 423

  • Page 1 Transmittal Page 3URGXFW 7LWOH 3DUW 1XPEHU :RUN&HQWUH 3UR  6HUYLFH 0DQXDO 3 6WDWXV 'DWH ,QWLDO ,VVXH 0DUFK ...
  • Page 3 WorkCentre Pro 423/428 6HUYLFH 0DQXDO...
  • Page 4: Service Manual

    • Be careful of handling to avoid missing or damaging the manual. Edited by: XEROX - GKLS [XEROX], [The Document Company] are registered trademarks PRINTED IN GREAT BRITAIN...
  • Page 5 Revision Control List Product: Title: Part Number: Revision: WorkCentre Pro 423/428 WorkService Manual 708P86749 March 2002 'RFXPHQWDWLRQ DYDLODEOH Ch…qÃ8‚ƒ’ &'Q'%&#( Q9AÉr…†v‚Ã‚Ã89SPH &'Q'%&$ $OO SDJHV LQ WKLV PDQXDO DUH UHYLVLRQ ...
  • Page 7: Scope Of This Document

    INTRODUCTION • Scope of this Document • How to Use this Manual • Terms and Symbols • Abbreviations • Safety Information • Translation of Warnings SECTION 1 SERVICE CALL PROCEDURES SECTION 2 TROUBLESHOOTING SECTION 3 IMAGE QUALITY TROUBLESHOOTING SECTION 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT SECTION 5 PARTS LIST...
  • Page 9 INTRODUCTION...
  • Page 11: Table Of Contents

    Contents Scope of this Document ................2 How to Use this Manual ................2 Organisation of this Manual ..............2 Revision Information ................2 Terms and Symbols...................3 Abbreviations.....................4 Safety Information..................5 Translation of Warnings................7 03/02 Contents WorkCentre 423/428 INTRODUCTION...
  • Page 12: Organisation Of This Manual

    When this manual is partially revised, revisions will be sequentially indicated as Revision A, Revision B, Revision C, etc. All revised pages will be marked This manual covers the standard service procedures for the WorkCentre Pro 423/428. accordingly with “Revision A’, “Revision B”, “Revision C”, and so on.
  • Page 13: Terms And Symbols

    WARNING Terms and Symbols Disconnect the power cord from the outlet while performing any tasks that do not need the Specific terms and symbols used in any particular section are described in the Preface for electricity on. Contact with electricity can cause death or injury. Contact with moving parts that section.
  • Page 14: Abbreviations

    WorkCentre 423/428 03/02 INTRODUCTION 4 Abbreviations WARNING Abbreviations Use of controls or adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure. This machine is certified to This manual contains abbreviations that are specific to this manual, as well as general comply with laser product performance standards set by the US department of health and abbreviations, which include: human services as a class 1 product.
  • Page 15: Safety Information

    Safety Information CAUTION During normal operation, this machine produces ozone gas. The amount of ozone produced does not present a hazard to the operator. However, it is advisable that the machine be operated in a well- ventilated area. NOTE: The product contains a dry imager cartridge that is recyclable. Under various states and local laws, it may be illegal to dispose of the cartridge into the municipal waste.
  • Page 16 Preserve the Xerox product involved and the scene of the incident inclusive of any associated equipment located in the vicinity of the incident. To enable prompt resolution of health and safety incidents involving Xerox products and to ensure Return any affected equipment/part(s) to the location designated by EH&S and/or the Xerox regulatory compliance.
  • Page 17: Translation Of Warnings

    geboten, da dies zu ernsthaften Verletzungen oder Stromschlägen führen kann. Der Translation of Warnings Umgang mit beweglichen Bauteilen kann zu ernsthaften körperlichen Verletzungen führen. Chapter 1 - Service Call Procedures. AVISO WARNING Apague la máquina y desconecte el cable de potencia de la red antes de realizar tareas A warning is used whenever an operating or maintenance procedure, practice condition or que no requieran el uso de electricidad.
  • Page 18 WorkCentre 423/428 03/02 INTRODUCTION 7 Translation of Warnings directement. Les procédures d’entretien doivent être rigoureusement suivies comme Chapter 2 – Troubleshooting. indiqué dans la documentation. WARNING ATTENZIONE Switch off the machine and disconnect the power cord. L’uso di controlli o regolazioni o procedure diverse da quelle indicate in questo manuale possono provocare esposizione a radiazioni pericolose.
  • Page 19 Follow the service procedure exactly as written. Use of controls or adjustments other than Éviter l’exposition directe au faisceau those specified in this manual, may result in an exposure to invisible laser radiation. Rayonnement laser invisible During servicing, the invisible laser radiation can cause eye damage if looked at directly. PERICOLO DANGER Evitare l’esposizione diretta ai raggi...
  • Page 20 WorkCentre 423/428 03/02 INTRODUCTION 7 Translation of Warnings Alle Wartungsmaßnahmen den Vorschriften entsprechend ausführen. Das nicht den Chapter 3 – Image Quality Troubleshooting. Vorschriften entsprechende Bedienen Geräts oder Ändern bestimmter Geräteeinstellungen kann zum Kontakt mit (unsichtbarer) Laserstrahlung führen. WARNING (Unsichtbare) Laserstrahlung kann beim direkter Ansicht zu ernsthaften Langzeitschäden Switch off the power to the machine and disconnect the power cord from the outlet while der Augen führen.
  • Page 21 Some of the Image Quality correction activities can involve exposure to laser radiation. Chapter 4 – Dissasembly and Assembly Procedures, Adjustments. This is indicated by the laser warning symbol in the text. Where this is seen, observe the laser precautions. WARNING Switch off the machine and disconnect the power cord.
  • Page 22 WorkCentre 423/428 03/02 INTRODUCTION 7 Translation of Warnings Il complessivo DADF pesa 8,6 Kg. Fare molta attenzione quando lo si solleva. Chapter 6 - General VORSICHT WARNING Das Gewicht des Duplex-Vorlageneinzugs (DVE) beträgt 8,6 kg (18,6 Pfund). Vorsicht beim The weight of the IOT assembly is 46 kg (101 lb). Two persons will be required to lift this Anheben.
  • Page 23 Chapter 8 – Accessories WARNING Switch off the machine and disconnect the power cord. DANGER Isoler la machine et débrancher le cordon d’alimentation. ATTENZIONE Spegnere la macchina e staccare il cavo di alimentazione. VORSICHT Das Gerät ausschalten und den Netzstecker aus der Stromquelle entfernen. AVISO Apague la máquina y desconecte el cable de potencia.
  • Page 24 WorkCentre 423/428 03/02 INTRODUCTION 7 Translation of Warnings...
  • Page 25 CHAPTER 1 SERVICE CALL PROCEDURE...
  • Page 27 Contents Trimming ..................... 3 1.1.1 Trimming Procedure.................. 3 1.1.2 Consumables and consumable parts ............3 1.1.3 Trimming Check List ................. 4 03/02 Contents WorkCentre Pro 423/428 CHAPTER 1 SERVICE CALL PROCEDURE...
  • Page 28: Trimming

    WorkCentre Pro 423/428 CHAPTER 1 SERVICE CALL PROCEDURE 03/02 1.1 Trimming...
  • Page 29: Trimming Procedure

    <Main Unit> 1.1 Trimming Consumable parts Replacement interval Remarks Perform trimming on WorkCentre Pro 423/428 at eachservice call. This helps to maintain optimum machine performance. Tray 1 (Feed Roll) 600K feed After replacement, clear the Tray 1 feed counter. (Chain:30 Function:6) 1.1.1 Trimming Procedure...
  • Page 30: Trimming Check List

    WorkCentre Pro 423/428 CHAPTER 1 SERVICE CALL PROCEDURE 03/02 1.1 Trimming 1.1.3 Trimming Check List a)….. Check and if necessary, clean, replace, adjust, and refill. b)….. Always check and clean. c)….. Always replace at the specified interval. Work Every 200K Disassembly &...
  • Page 31 CHAPTER 2 TROUBLESHOOTING...
  • Page 33 2.3.3.1 Super G3 Fax Introduction ..................106 2.3.3.2 V.8 CM/JM Signal ....................107 2.3.3.3 V.8 Operation for Auto Transmission ..............108 2.3.3.4 V.8 Operation for Manual Transmission ..............108 2.3.3.5 Troubleshooting of Super G3 Fax ...............109 03/02 Contents WorkCentre Pro 423/428 CHAPTER 2 TROUBLESHOOTING...
  • Page 34 WorkCentre Pro 423/428 CHAPTER 2 TROUBLESHOOTING 03/02 2.1 Preface 2.1 Preface Glossary The following terminology and sentences are used throughout the troubleshooting section. How to Troubleshoot Terminology Description Level 1 Troubleshooting Status Code Codes (A to X) displayed on the Control Panel when the Level 1 Troubleshooting (Level1 FIP) is the first step to diagnosis of a problem.
  • Page 35 Have you made communications tests with NSC twice? Take corrective action for X Code. Try communications with problem remote terminal. Are communications conducted normally? Take corrective action for X Code. End of work. 03/02 2.2 Level 1 Troubleshooting WorkCentre Pro 423/428 CHAPTER 2 TROUBLESHOOTING...
  • Page 36 WorkCentre Pro 423/428 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting 2.3.1.2 A List of IIT/IOT Status Codes Level 2 Troubleshooting (nnnn) indicates an internal code corresponding to Status code. 2.3.1 Status Code Lists Status Status Description Corrective Ref. Code Action 2.3.1.1 Types of Status Codes...
  • Page 37 POWER 10.2 U7-04 Inter-system No Communication between POWER 19.2 (4146) degrees continuous three OFF/ON Communication MF SYS and MCU/SW. OFF/ON (4074 ) times in 5 seconds during Fail warm-up 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 CHAPTER 2 TROUBLESHOOTING...
  • Page 38 Fail PWB and IIT/IPS PWB products. connectors. U7-43 Inter-system BCC error between POWER 3.1A UE-10 EPSV Interface Unable to notify Fuji Xerox Press arbitrary 3.2A (4473) Communication MCU/SW PWB and IIT/IPS OFF/ON (4910) Error of a machine fault key. Fail PWB.
  • Page 39 3.1C H5-82 Finisher Fault Stapler Motor Fail (Staple POWER 12.10 (4867) failure Error (The machine does OFF/ON (4582) HP sensor not ON at OFF/ON not reach Ready status. stapling) 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 CHAPTER 2 TROUBLESHOOTING...
  • Page 40 WorkCentre Pro 423/428 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Status Status Description Corrective Ref. Status Status Description Corrective Ref. Code Action Code Action H8-68 Page Memory PAGE MEMORY PWB R/W POWER 3.1C E3-1 JAM at FUSER FUSER EXIT SENSOR not Remove paper.
  • Page 41 SENSOR not ON within document. specified time after FEED IN F4-32 JAM at Finisher TIMING SENSOR not ON Remove paper. 12.4,12 SENSOR ON (4F4A) TIMING SNR within specified time 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 CHAPTER 2 TROUBLESHOOTING...
  • Page 42 WorkCentre Pro 423/428 2-10 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Status Status Description Corrective Ref. Status Status Description Corrective Ref. Code Action Code Action F4-36 JAM at Finisher TIMING SENSOR Paper Remove paper. 12.6 J8-4 CRUM Access ACK not received more than...
  • Page 43 Main CPU exception Replace M/F MAIN PWB. processing error Unsupported instruction (line 1010 emulator) V0-00 F044 Main CPU exception Replace M/F MAIN PWB. processing error Unsupported instruction (line 1111 emulator) 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-11 CHAPTER 2 TROUBLESHOOTING...
  • Page 44 WorkCentre Pro 423/428 2-12 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting V Code Internal Description Corrective Action V Code Internal Description Corrective Action code code V0-01 8310 Error detected by Main Check/replace M/F MAIN PWB, V0-08 8351 EEPROM write error...
  • Page 45 PAGE MEMORY, MMB, and V1-02 8361 DMA_CH1 handler open Check/replace M/F MAIN PWB and HANDSET. failure MMB. V1-02 8362 DMA_CH1 handler close Check/replace M/F MAIN PWB and failure MMB. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-13 CHAPTER 2 TROUBLESHOOTING...
  • Page 46 WorkCentre Pro 423/428 2-14 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting V Code Internal Description Corrective Action V Code Internal Description Corrective Action code code V1-05 83A5 Illegal communication Check/replace M/F MAIN PWB, V1-07 83C0 Illegal channel number Check M/F MAIN PWB and G3M...
  • Page 47 Process Monitor Task PAGE MEMORY, and MMB. busy M/F MAIN PWB or G4/ICM borad. V2-00 8117 File information read failure Check/replace M/F MAIN PWB, PAGE MEMORY, and MMB. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-15 CHAPTER 2 TROUBLESHOOTING...
  • Page 48 WorkCentre Pro 423/428 2-16 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting V Code Internal Description Corrective Action V Code Internal Description Corrective Action code code V2-00 8118 E-mail send log registration Check/replace M/F MAIN PWB, V2-00 81B3 Real-time processing error...
  • Page 49 Job registration table Check/replace M/F MAIN PWB, no next mail) overflow in information area PAGE MEMORY, MMB, and (jobmgr) for job control and CONTROL PANEL. management by panel 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-17 CHAPTER 2 TROUBLESHOOTING...
  • Page 50 WorkCentre Pro 423/428 2-18 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting V Code Internal Description Corrective Action V Code Internal Description Corrective Action code code V2-07 8604 WAKE_UP or other illegal Replace OA I/F board or M/F MAIN V4-03...
  • Page 51 PAGE MEMORY, and MMB. job (deletion task) PAGE MEMORY, and MMB. original position V6-06 825C File close processing Check/replace M/F MAIN PWB, executed twice PAGE MEMORY, and MMB. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-19 CHAPTER 2 TROUBLESHOOTING...
  • Page 52 WorkCentre Pro 423/428 2-20 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting V Code Internal Description Corrective Action V Code Internal Description Corrective Action code code V6-06 825D Invalid open type when file Check/replace M/F MAIN PWB, V7-00 850A Failure to convert physical G3M software bug ->...
  • Page 53 Check/replace G3M and M/F MAIN error. CHK instruction for connections. Check/replace found PWB. G3M and M/F MAIN PWB. V7-00 8579 Specified TCB address not Check/replace G3M and M/F MAIN found PWB. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-21 CHAPTER 2 TROUBLESHOOTING...
  • Page 54 WorkCentre Pro 423/428 2-22 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting V Code Internal Description Corrective Action V Code Internal Description Corrective Action code code V7-00 8589 CPU exception processing Check G3M and M/F MAIN PWB V7-03 89C5 G4M wait queue control Check M/F MAIN PWB and G4M error.
  • Page 55 Codec device initialization Check/replace M/F MAIN PWB. failure Retry. V7-08 85E7 Error detected by codec Check/replace M/F MAIN PWB. Retry. V7-08 85EA Codec hang-up Check/replace M/F MAIN PWB. Retry. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-23 CHAPTER 2 TROUBLESHOOTING...
  • Page 56 WorkCentre Pro 423/428 2-24 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting 2.3.1.5 K Code List K Code Internal Error Description Corrective Action Code K Code Internal Error Description Corrective Action K0-03 086D Invalid number format Retry. Code (incomplete number) (ISDN)
  • Page 57 Job Template pool server and M/C. restrained by system data. functions. Template information Check the Job Template pool K5-04 00A0 Wrong job-requesting Check host’s job-requesting update) server address set in P-ESS.) parameter parameter 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-25 CHAPTER 2 TROUBLESHOOTING...
  • Page 58 WorkCentre Pro 423/428 2-26 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting K Code Internal Error Description Corrective Action K Code Internal Error Description Corrective Action Code Code K5-22 0623 Unable to log in to Job Check login account for matching...
  • Page 59 Third dial tone couldn’t be Connect line properly. Change line can’t be detected. (modem) and NCU. detected during dialing ( == setting. Check/replace MAIN ). DT3 can’t be detected. (modem) and NCU. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-27 CHAPTER 2 TROUBLESHOOTING...
  • Page 60 WorkCentre Pro 423/428 2-28 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting K Code Internal Error Description Corrective Action K Code Internal Error Description Corrective Action Code Code K6-07 0519 Busy tone detected after Line is busy. Try again. K6-05 0558 Ring back tone couldn’t be...
  • Page 61 K6-07 0580 Dial tone was detected after Connect line properly. Change line detection of RBT (Ring back setting. Check/replace MAIN tone) after dialing. DT3 (modem) and NCU. detected. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-29 CHAPTER 2 TROUBLESHOOTING...
  • Page 62 WorkCentre Pro 423/428 2-30 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting K Code Internal Error Description Corrective Action K Code Internal Error Description Corrective Action Code Code K6-07 0581 Ring back tone was detected Connect line properly. Change line...
  • Page 63 Check the remote terminal. K9-01 086C Remote terminal out of order Check the remote terminal. containing data of format not (ISDN) supported by MF-SYS K9-01 0872 Network failure (ISDN) Retry. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-31 CHAPTER 2 TROUBLESHOOTING...
  • Page 64 WorkCentre Pro 423/428 2-32 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting 2.3.1.6 D Code List K Code Internal Error Description Corrective Action Code D Code Internal Error Description Corrective Action K9-01 0874 Switchboard congestion Retry. Code (ISDN) D1-35 3106 M/F MAIN PWB parts are Replace M/F MAIN PWB.
  • Page 65 Unsuccessful in G4M0&X21 Check/replace G4M0 and OPTION Loop Test MOTHER board. Check G4M0_X21_LOOP_ERROR connections. D2-51 3128 Unsuccessful in G4M1&X21 Check/replace G4M1 and OPTION Loop Test MOTHER board. Check G4M1_X21_LOOP_ERROR connections. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-33 CHAPTER 2 TROUBLESHOOTING...
  • Page 66 WorkCentre Pro 423/428 2-34 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting 2.3.1.7 Corrective Action for X Codes 2.3.1.8 Corrective Action for X Codes flow chart At the occurrence of a problem with the machine, the machine is monitoring its status and will No communications indicate the problem by X Code.
  • Page 67 The resend count has exceeded the limit. Send Again An error occurred during reception. Receive Again An error code occurred. KX-XX/VX-XX The line is not connected. Check Cable 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-35 CHAPTER 2 TROUBLESHOOTING...
  • Page 68 WorkCentre Pro 423/428 2-36 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Symbols between < and - 2.3.1.11 Protocol Monitor In the G3 Mode, a command indicating additional information is shown between < and -. Outline Format < [additional information] -...
  • Page 69 EOR.MPSX End of re-send/Multi-pages signal(Xerox,ECM) Training failure EOR.PEOX End of re-send/Procedure interrupt EOM(Xerox,ECM) Correction continued (ECM) EOR.PMPX End of re-send/ Procedure interrupt MPS(Xerox,ECM) Correction continue response(ECM)[Response to CTC] MPSX Multi-pages signal(Xerox) NSSX Non-standard function setup (FX) PPS. EOMX Partial page signal/End of message(Xerox,ECM)
  • Page 70 WorkCentre Pro 423/428 2-38 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Signal Description Signal Description RM.SRR TnSConf Tone send confirmation [Note1] TnSReq Supplementary information 1 Tone send request [Note2] TrcCon Supplementary information 2 Trace confirmation [Note3] TrcReq Supplementary information 3...
  • Page 71 End of Page Receive indication PagERes Page Receive End response DocEReq Request for end of document send DocECon End of Document Sent confirm DocEInd End of Document Receive indication 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-39 CHAPTER 2 TROUBLESHOOTING...
  • Page 72 WorkCentre Pro 423/428 2-40 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Names & Description of G4 Signals Recorded Registration request Registration confirm Signal Description Unknown Undefined SABM Transfer to Non-Syncro. & Balance Mode(Mod8) COMWTOUT SABME Transfer to Non-Syncro. & Balance Mode Extension(Mod128)
  • Page 73 G4F code confirmation CallReq FInd Request for line connection G4F code indication CallCon FRes Line Connection confirm G4F code response CallInd Unknown Line Connection indication Undefined CallRes Line Connection response 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-41 CHAPTER 2 TROUBLESHOOTING...
  • Page 74 WorkCentre Pro 423/428 2-42 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Names & Description of ISDN Signals Recorded Signal Description RELEASE Release message Signal Description RELCOMP Release Complete message SABME Non-Syncro. & Balance Mode Extension setup INFO Addition Information message...
  • Page 75 Tone service confirmation SusReq Suspend request SusCon Suspend confirmation ResReq Restart request ResCon Restart confirmation ModeChg Mode change notice OnLine Online notice OffLine Offline notice State Call State 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-43 CHAPTER 2 TROUBLESHOOTING...
  • Page 76 WorkCentre Pro 423/428 2-44 CHAPTER 2 TROUBLESHOOTING 03/02 2-3 Level 2 Troubleshooting...
  • Page 77 A2/A3 Transmitter ID. The transmitter’s ID (local office ID). This may be sent only when /DIS bit 50 is 1 machine is set to black and white fax mode. 03/02 2-3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-45 CHAPTER 2 TROUBLESHOOTING...
  • Page 78 WorkCentre Pro 423/428 2-46 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting 2.3.1.12 X Codes List X Code Internal Error Description Corrective Action Code X Code Internal Error Description Corrective Action X0-27 03DD Failure in writing Permission Check/replace M/F MAIN PWB and...
  • Page 79 MCU/SW PWB for connections. X0-27 0444 Data Read Processing: NG Check/replace M/F MAIN PWB and Replace M/F MAIN PWB or MMB. MCU/SW PWB. X0-27 0445 Data Seek Failure 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-47 CHAPTER 2 TROUBLESHOOTING...
  • Page 80 WorkCentre Pro 423/428 2-48 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting X Code Internal Error Description Corrective Action X Code Internal Error Description Corrective Action Code Code X0-29 0216 DC-MF I/F Failure(DC-SYS Check M/F MAIN PWB and X0-29 0282...
  • Page 81 Fall back error. Awaiting auto re- Check the remote terminal/line. (external line) call and connect (Modem) and NCU. send Check/replace M/F MAIN PWB. (when 1300 Hz signal reached) 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-49 CHAPTER 2 TROUBLESHOOTING...
  • Page 82 WorkCentre Pro 423/428 2-50 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting X Code Internal Error Description Corrective Action X Code Internal Error Description Corrective Action Code Code X2-03 0512 Fall back error. Retry. Check the remote terminal/ X2-33 02C0 In Remove Maintenance, an Check the remote terminal/line.
  • Page 83 X3-00 0919 (G4): Data link can’t be set up. Check the remote terminal/line. X3-20 094C (G4)T.X1 timeout error Check the remote terminal/line. Check/replace G4M PWB. Check/replace G4M PWB. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-51 CHAPTER 2 TROUBLESHOOTING...
  • Page 84 WorkCentre Pro 423/428 2-52 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting X Code Internal Error Description Corrective Action X Code Internal Error Description Corrective Action Code Code X3-30 0960 (G4): In session, an error with Check the remote terminal.
  • Page 85 Recover due to expired timer System data check. out.) (ISDN) Check/replace G4/ICM PWB. X3-64 0841 Not used (Reception of Restart- Check the line. Check/replace confirm message: time out) G4/ICM PWB. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-53 CHAPTER 2 TROUBLESHOOTING...
  • Page 86 WorkCentre Pro 423/428 2-54 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting X Code Internal Error Description Corrective Action X Code Internal Error Description Corrective Action Code Code X3-70 0892 Other wrong procedures (ISDN) System data check. X3-74 0829 In HDLC channel, incomplete Check/replace G4/ICM PWB.
  • Page 87 IOT (***-***) <with job> (COMMAND_REJECT Add paper tray3 status received) xxxx 003-380 Serial number write request Ready to print (N7-30) to IOT not successful (***-***) 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-55 CHAPTER 2 TROUBLESHOOTING...
  • Page 88 WorkCentre Pro 423/428 2-56 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Chain- Description LCD display Job log Corrective Action Chain- Description LCD display Job log Corrective Action Link Link 003-953 012-281 Tray 4 Empty <no job> Refer to the Stapler...
  • Page 89 PC 016-720 PCL Command Error Error resolved Cancel and execute error correctly using (AP specification) (***-***) Command the job again. CentreWare Error correctly. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-57 CHAPTER 2 TROUBLESHOOTING...
  • Page 90 WorkCentre Pro 423/428 2-58 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Chain- Description LCD display Job log Corrective Action Chain- Description LCD display Job log Corrective Action Link Link 016-740 016-743 Failed to log in to job Error resolved Job template 1.
  • Page 91 (***-***) conversion the server disk. conversion by S-Formatter error 016-777 HDD access error during Error resolved Hard disk Not needed image conversion by S- (***-***) error Formatter 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-59 CHAPTER 2 TROUBLESHOOTING...
  • Page 92 WorkCentre Pro 423/428 2-60 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Chain- Description LCD display Job log Corrective Action Chain- Description LCD display Job log Corrective Action Link Link 016-786 050-106 Unable to write temporary Error resolved Short of 1.
  • Page 93 081-311 Critical error in Fax Ready to print ISDN line error (***-***) machine/ISD (N9-58) controller (***-***) FAXC_ERTObstacleOrLine N line fault FAXC_ESysInFatalErr / Err / Remote Error Fatal Error 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-61 CHAPTER 2 TROUBLESHOOTING...
  • Page 94 WorkCentre Pro 423/428 2-62 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Chain- Description LCD display Job log Corrective Action Chain- Description LCD display Job log Corrective Action Link Link 081-711 081-720 Failed to reserve resources Error resolved Resources Error in communication with...
  • Page 95 ESS ROM DIMM #1 Check Ready to print 1. Extract and insert (N6-25) (N6-10) (***-***) PWB. Fail (***-***) the standard ROM DIMM. 2.Replace standard ROM DIMM. 3.Replace ESS PWB. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-63 CHAPTER 2 TROUBLESHOOTING...
  • Page 96 WorkCentre Pro 423/428 2-64 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Chain- Description LCD display Job log Corrective Action Chain- Description LCD display Job log Corrective Action Link Link 116-332 116-345 Invalid Log control Ready to print 1.Remove HDD, turn...
  • Page 97 JME related critical error Ready to print 1. Reinstall the ESS 2.Replace ESS (N9-62) (***-***) software. PWB. 2.Replace ESS 116-376 Port 9100 Software Fail Ready to print PWB. (N9-66) (***-***) 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-65 CHAPTER 2 TROUBLESHOOTING...
  • Page 98 WorkCentre Pro 423/428 2-66 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Chain- Description LCD display Job log Corrective Action Link 116-701 Forced duplex printing Duplex print Add memory or failure due install HDD if no HD to memory is available.
  • Page 99 An illegal interrupt occurred with PNL I/F. CONTROL PANEL for 81D3 A message with an unknown address connections. Replace M/F MAIN was sent from DC. PWB or CONTROL PANEL. (EM_DCIFM_INVAILD_ADDR) 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-67 CHAPTER 2 TROUBLESHOOTING...
  • Page 100 WorkCentre Pro 423/428 2-68 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Internal Error Description Corrective Action Internal Error Description Corrective Action Code Code 81D4 User buffer is full with data. (Serial data 81EB Time out while waiting for the response...
  • Page 101 Failed to notify completion of serial data PWB or CONTROL PANEL. receiving that is to DC-SYS. 82C0 Invalid box number for box deletion and 8471 BP-F Handler can’t be opened. all document deletion EMG_VCEM_OPEN 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-69 CHAPTER 2 TROUBLESHOOTING...
  • Page 102 WorkCentre Pro 423/428 2-70 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Internal Error Description Corrective Action Internal Error Description Corrective Action Code Code 8715 WRITE command reexecution failure Check the hardware. Replace 8472 BP-F Handler was requested to close by EM_HD_WRITE_RETRY HDD.
  • Page 103 Instructions that are not installed (line Replace CONTROL PANEL. 1111 emulator) 8C0C An event(0) inhibited from use was Check M/F MAIN PWB and ROM. detected. Replace CONTROL PANEL. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-71 CHAPTER 2 TROUBLESHOOTING...
  • Page 104 WorkCentre Pro 423/428 2-72 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Internal Error Description Corrective Action Internal Error Description Corrective Action Code Code 8C48 Job type can’t be identified. Check M/F MAIN PWB and ROM. 8C30 XX System, Recognition failure Confirm XX-sys.
  • Page 105 MCU/SW PWB/M/F MAIN PWB MCU/SW PWB/M/F MAIN PWB connections. Check M/F MAIN connections. Check M/F MAIN PWB and ROM. Replace PWB and ROM. Replace CONTROL PANEL. CONTROL PANEL. 03/02 2.3 Level 2 Troubleshooting WorkCentre Pro 423/428 2-73 CHAPTER 2 TROUBLESHOOTING...
  • Page 106 WorkCentre Pro 423/428 2-74 CHAPTER 2 TROUBLESHOOTING 03/02 2.3 Level 2 Troubleshooting Internal Error Description Corrective Action Internal Error Description Corrective Action Code Code 8C7F Service function (sysPnl) parameter error Check CONTROL PANEL- 8DE2 DRAM error during page control Check/replace the hardware.
  • Page 107 (dial 116 for NTT). In ISDN communication outside Japan, incoming signals from overseas may be different from those explained here because the technical standards partially differ. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-75 CHAPTER 2 TROUBLESHOOTING...
  • Page 108 WorkCentre Pro 423/428 2-76 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting 2.3.2.1 ISDN Line Basic Troubleshooting Flow Communication error Action/work Unique to ISDN communication? kaise Judgment Error Code D channel B channel (Comm mode) G4 mode G3 mode The table at left uses the error codes of Able 3351G/3321G...
  • Page 109 A TA or DSU may have a built-in terminator that network trace data. is switched ON and OFF. Check the settings of all devices in a group to ensure that only one terminator is ON. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-77 CHAPTER 2 TROUBLESHOOTING...
  • Page 110 WorkCentre Pro 423/428 2-78 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting 2.3.2.2 ISDN Basic Sequences D-channel sequence Operator Operator Appli- Presen- Session Trans- Net- Data- Physi- ISDN net Physi- Data- Net- Trans- Session Presen- Appli- cation tation port work Link...
  • Page 111 Session Presen- Appli- cation tation port work Link Link work port tation cation B-channel communication (See the B-channel sequence) Disconnection DISC request RELEASE RELCOMP DISC DISC RELEASE RELCOMP DISC 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-79 CHAPTER 2 TROUBLESHOOTING...
  • Page 112 WorkCentre Pro 423/428 2-80 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting B-channel sequence Operator Appli- Data- Presen- Appli- Operator Presen- Session Trans- Net- Physi- ISDN(BRI) Physi- Data- Net- Trans- Session cation Link tation cation tation port work Link work port...
  • Page 113 Text.U: Image information packet. The I(DT(TDT(RDEP))) number of packets depends on the I(DT(TDT(CSE))) information density of the document. I(DT(TDT(RSEP))) I(CQ) I(CF) D-channel communication - disconnection (See the D-channel sequence) 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-81 CHAPTER 2 TROUBLESHOOTING...
  • Page 114 WorkCentre Pro 423/428 2-82 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting G4M Data Link Layer Monitor 2.3.2.3 G4 Fax Protocol Monitor TRACE : DATALINK The samples below show ICM and G4M protocol monitor data in normal G4 Fax LAPTIME LOCAL REMOTE communication.
  • Page 115 100162 1” 16 <- 1001C1 1” 85 <- 100146 1” 86 -> 100184 1” 90 <- 100168 1” 91 -> 1001A1 1” 91 -> 1001130000 1” 93 <- 101117 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-83 CHAPTER 2 TROUBLESHOOTING...
  • Page 116 WorkCentre Pro 423/428 2-84 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting G4M Session Layer Monitor G4M Presentation Monitor TRACE : SESSION TRACE : PRESENTATION LAPTIME LOCAL REMOTE LAPTIME LOCAL REMOTE 0” 04 -> 012A0A1838312D34343835… 0” 00 PresD -> A406800102810100 0” 15 <-...
  • Page 117 Reestablishment notice of suspended call RESREJ resume reject Call reestablishment failure notice SUSP suspend Call suspend request SUSPACK suspend acknowledge Call suspend completion notice SUSPREJ suspend reject Call suspend failure notice 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-85 CHAPTER 2 TROUBLESHOOTING...
  • Page 118 WorkCentre Pro 423/428 2-86 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting DISC Signal Contents (Sample FIF below: 0801014508028090) Generation source code Information Contents Description (Fixed unless described here) element bit 8765 4321 Local side Remote side Protocol Identifier Local office...
  • Page 119 -001 0010 No reponse from called extracted items. For -001 1100 user (92h) details, see -101 1000 Invalid number format (9C) reason display Q931. Terminal attribute mismatch (D8h) 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-87 CHAPTER 2 TROUBLESHOOTING...
  • Page 120 WorkCentre Pro 423/428 2-88 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting SETUP Signal Contents(1/3) (Sample FIF below: 0801010504039090A2180183) Information Contents element Description (Fixed unless described here) bit 8765 4321 Protocol Identifier Channel Identifier 0000 1000 08h (fixed) 0001 1000 Identifier of information element "channel": 18h (fixed) Call No.
  • Page 121 30h to 39h(30h=0, 31h=1, 32h=2, … 39h=9) Number A telephone number registered at ISDN-ID enters here. "Origination number 5" continues for the number of digits of the registered telephone number. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-89 CHAPTER 2 TROUBLESHOOTING...
  • Page 122 WorkCentre Pro 423/428 2-90 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting SETUP Signal Contents (3/3) (Sample FIF below:700A8031..7104805031..7C0290907D029184) LLC-1 Identifier of information element "Low Layer Compatibility Identifier (LLC)": 7Ch(fixed) 0111 1100 Information Contents element Description (Fixed unless described here) LLC-2 LLC length Number of octets in information element “LLC”...
  • Page 123 Message not matching call status, defined, or Message type Network fault provided Temporary network fault (Connectable by Information element not defined or provided Info. element identifier redialling) Invalid information element Message type #100 Switchboard congestion 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-91 CHAPTER 2 TROUBLESHOOTING...
  • Page 124 WorkCentre Pro 423/428 2-92 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting Supplementary Explanations about Reason Display Values Display Reason Diagnostic information Number (May be added) (decimal) value  If G4 auto dialling fails to connect the remote terminal, the number may be redialled (hex) automatically.
  • Page 125 *See Tables 6 and 7 Reset confirmation 10 01 1F Data 10 01 (Packet number etc.) RECEIVE READY 10 01 (Packet number etc.) 10 01 (Packet number etc.) RECEIVE NOT READY 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-93 CHAPTER 2 TROUBLESHOOTING...
  • Page 126 WorkCentre Pro 423/428 2-94 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting Table 4 Causes of SI Packet Disconnection (Cause) 2.3.2.5.2 Session Protocol (Layer 5 of B channel) For the normal sequence of the Session protocol, see "Session" in the B-channel sequence.
  • Page 127 Information element names are given in squares and their IDs are indicated at the upper left positions. In the above example, "Session reference information" of ID 01 appears "Originating terminal ID" of ID 0A. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-95 CHAPTER 2 TROUBLESHOOTING...
  • Page 128 WorkCentre Pro 423/428 2-96 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting FIF indicates each information element by "identifier + information element length (number of bytes in a hex format) + information element contents." The example below shows FIF of CSS, but that of RSSP can be interpreted in the same way.
  • Page 129 Service identifier Comm. Monitor timer Trans. capability* Character code Session service function Recep. Comm. capability capability** Non-basic telex terminal function User data Model code Non-standard function ROM version Model specification 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-97 CHAPTER 2 TROUBLESHOOTING...
  • Page 130 WorkCentre Pro 423/428 2-98 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting 2.3.2.5.2-4 RSSP signal (Session layer) Session ref. info Called terminal ID * Transmission capability 1: Transmission header Date and time info. capability Non-basic telex Session reference ** Reception capability...
  • Page 131 Contents of "Slow scan width": Slow scan width value with next byte Slow scan width: 3681h MBU Identifier of information element "Attribute" 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-99 CHAPTER 2 TROUBLESHOOTING...
  • Page 132 WorkCentre Pro 423/428 2-100 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting 2.3.2.5.3-2 CDUIP (Page D: Presentation layer) *Layout object type 02: Page *MBU : Basic Measurement Unit = mmx1200/25.4 A4 w : 210mmx1200/25.4=9921 -> 26C0 h MBU A4 L : 297mmx1200/25.4=14031->36CE h MBU MBU is a two-byte hexadecimal value.
  • Page 133: Isdn Fax Installation Notes

    A small MJ for an analogue line is called RJ11. This MJ has six pins for two wires. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-101 CHAPTER 2 TROUBLESHOOTING...
  • Page 134 WorkCentre Pro 423/428 2-102 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting S/T point An S/T point is a connection point between devices connected to an ISDN line. Bus wiring connection points are named U, T, S, and R sequentially from the network side. The names Bus wiring is used to connect several terminals to an ISDN line.
  • Page 135: Installation Notes

    "5671234" is registered, but not the port where terminal A is connected. In other words, terminal B rings but terminal A does not. Thus, the global termination function can allow termination only at specific terminals. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-103 CHAPTER 2 TROUBLESHOOTING...
  • Page 136 WorkCentre Pro 423/428 2-104 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting Using NET1500 (Primary group interface) G3 Fax connection to analogue point of TA or router (ISDN-G3) NET1500 has a communication speed of 1.5 Mbps and provides up to 24 channels of 64 A G3 Fax connected to the analogue port of a TA/router.
  • Page 137: Cases Of Parameter Setting Error Or Mismatch

    The mode is changed only when the reason of error code Q.931 from the network is 3 or 88. Depending on the error code, the error processing is classified into three: 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-105 CHAPTER 2 TROUBLESHOOTING...
  • Page 138: Super G3 Fax

    WorkCentre Pro 423/428 2-106 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting 2.3.3 Super G3 Fax 2.3.3.1 Super G3 Fax Sample Protocol (T.30) Trace of Super G3 Fax In 1996, ITU-T recommended Super G3 Fax. Signal names and contents LOCAL REMOTE Super G3 Fax featuring 28.8 kbps communication has the modem capabilities of V.8 and...
  • Page 139: V.8 Cm/jm Signal

    Protocol category tag GSTN access Reserved (Set 0) 1: Cellular connection on termination side 1: Cellular connection on origination side GSTN access category tag Terminal info. End of data 7Eh 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-107 CHAPTER 2 TROUBLESHOOTING...
  • Page 140: V.8 Operation For Auto Transmission

    WorkCentre Pro 423/428 2-108 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting 2.3.3.3 V.8 operation for auto transmission 2.3.3.4 V.8 operation for manual transmission Super G3 Fax also has the capabilities of V.17 (14.4K) and V.29/V.27ter (9600/4800) to The flowchart below shows manual transmission from an originating terminal.
  • Page 141: Troubleshooting Of Super G3 Fax

    For this check, protocol data of the remote terminal is checked to see whether signals sent from the local terminal are recorded (as recorded in the local trace data). 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-109 CHAPTER 2 TROUBLESHOOTING...
  • Page 142: Iit/iot Status Code Fip

    WorkCentre Pro 423/428 2-110 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting 2.3.4 IIT/IOT Status Code FIP U1-2 Fuser Fan failure (BSD 10.1) Is the voltage between MAIN MOTOR J205-6(+) and U1-1 MAIN MOTOR Failure (BSD 4.1) Enter Diag mode and execute Chain 4 - Func 2.
  • Page 143 Does the display change (H/L)? Does the display change (H/L)? Perform the general-purpose transmission sensor FIP. Perform the general-purpose transmission sensor FIP. Replace the MCU/SW PWB. (PL7.2) Replace the MCU/SW PWB. (PL7.2) 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-111 CHAPTER 2 TROUBLESHOOTING...
  • Page 144 WorkCentre Pro 423/428 2-112 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting U2-3 Carriage Abnormal (BSD 6.2) U3 ROS Abnormal Checks U3-4 ROS Abnormal (BSD 6.3) When moving the carriage to the right and left by hand, is there WARNING binding?
  • Page 145 Change the NVM values. The initial values are 8. 11(+) and FS-12(-) 100VAC? Replace the MCU/SW PWB. (PL7.2) Perform AC FIP. Is the voltage between POWER UNIT J523-2(+) and GND(-) 0VDC? 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-113 CHAPTER 2 TROUBLESHOOTING...
  • Page 146 WorkCentre Pro 423/428 2-114 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting U4-3 FUSER Abnormal (BSD 10.2) U4-4 FUSER Abnormal (BSD 10.2) Initial Action Initial Action l Check the drawer connector (P/J12) between the FUSER l Check the drawer connector (P/J12) between the FUSER...
  • Page 147 Is the voltage 100 VAC between the Change the NVM values. The initial values are 8. POWER UNIT FS-11(+) and FS-12(-) ? Replace the MCU/SW PWB. (PL7.2) Perform AC FIP. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-115 CHAPTER 2 TROUBLESHOOTING...
  • Page 148 WorkCentre Pro 423/428 2-116 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting U4-6 FUSER Abnormal (BSD 10.2) U6-1 Memory Error at POWER ON (BSD 3.1C) Initial Check If Power OFF/ON does not repair the error, replace the MCU/SW Is the voltage 0 VDC between the POWER l Check the drawer connector (P/J12) between the FUSER PWB.(PL7.2)
  • Page 149 U7-45 Inter-system Communication FAIL (BSD PWB(PLXX.X), and IIT/IPS PWB(PL3.1) in this order. MCU/SW PWB (PL7.2). 3.1A) U7-35 Inter-system Communication FAIL (BSD Check between the MCU/SW PWB and IIT/IPS PWB for an open 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-117 CHAPTER 2 TROUBLESHOOTING...
  • Page 150 WorkCentre Pro 423/428 2-118 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting U9-31 MCU/SW PWB Failure (BSD 3.1C) H5-81 FINISHER Failure (BSD 12.8) H5-82 FINISHER Failure (BSD 12.10) If Power OFF/ON does not solve the problem, replace the Enter Diag. Mode and execute Chain12 Func22.
  • Page 151 If no problem is found, replace the HDD. (PL7.2) open wire or poor contact. If no problem is found, replace the DADF CONT PWB (PLXX.X), IIT/IPS PWB(PL3.1), and MCU/SW PWB(PL7.2) in this order. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-119 CHAPTER 2 TROUBLESHOOTING...
  • Page 152 WorkCentre Pro 423/428 2-120 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting HD-03 Hard Disk Failure (BSD 3.1C) E1-1 REGI SENSOR Jam (BSD 8.5) E1-6 REGI SENSOR Jam (BSD 8.5) Check between the HDC PWB and HDD for an open wire or...
  • Page 153 Replace the MCU/SW PWB. (PL7.2) poor contact. Check the R/H COVER actuator for damage or misalignment. Replace the MCU/SW PWB. (PL7.2) Check the CABINET R/H COVER actuator for damage or misalignment. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-121 CHAPTER 2 TROUBLESHOOTING...
  • Page 154 WorkCentre Pro 423/428 2-122 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting E8-2 DUPLEX Jam (BSD 10.4) C1-3 TRAY1 Misfeed (BSD 8.1 8.5) C2-3 TRAY2 Misfeed (BSD 8.4 8.5) Chain Link Codes for Check Chain Link Codes for Check Chain Link Codes for Check...
  • Page 155 Transport error due to foreign matter on paper path l Transport error due to foreign matter on paper path l ROLL dirty or worn l ROLL dirty or worn l ROLL dirty or worn 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-123 CHAPTER 2 TROUBLESHOOTING...
  • Page 156 WorkCentre Pro 423/428 2-124 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting C8-2 Paper Remaining at FEED Section (BSD 8.4) C9-2 MSI Misfeed (BSD 8.2 8.4) A1-1 DADF Document Jam (Intake Section) (BSD 5.1 5.2 5.3) Chain Link Codes for Check...
  • Page 157 TRANSPORT ROLL rotation error l BELT missing or cut l SENSOR actuator broken or missing l ROLL dirty or worn l Transport error due to foreign matter on paper path 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-125 CHAPTER 2 TROUBLESHOOTING...
  • Page 158 WorkCentre Pro 423/428 2-126 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting A3-3 DADF Document Jam (Ejection Section) A5-1 DADF Interlock Open (BSD 1.7B) F4-11 FINISHER IN SENSOR Jam (BSD 12.3 12.5) Chain Link Codes for Check Open the DADF TOP COVER and press the actuator of the...
  • Page 159 Supply voltage drop at customer l Check the circuit between the FINISHER REVERSE SENSOR and FINISHER CONT PWB. If no problem is found, replace FINISHER REVERSE SENSOR. (PL13.15) 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-127 CHAPTER 2 TROUBLESHOOTING...
  • Page 160 WorkCentre Pro 423/428 2-128 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting F4-36 FINISHER TIMING SENSOR Jam (BSD 12.6) F4-42 FINISHER EXIT SENSOR Jam (BSD 12.7) F7-2 FINISHER Interlock Open (BSD 12.1) Chain Link Codes for Check Chain Link Codes for Check Close the FRONT DOOR.
  • Page 161 J8-1 CRUM Access Error (BSD 9.1) Check the CRU drawer connector P/J606 for a broken or bent pin. If no problem is found, replace the CRU(PL5.1) and MCU/SW PWB(PL7.2) in this order. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-129 CHAPTER 2 TROUBLESHOOTING...
  • Page 162 WorkCentre Pro 423/428 2-130 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting J8-3 CRU Access Error (BSD 9.1) Check the CRU drawer connector P/J606 for a broken or bent pin. Check between the CRU drawer connector J606 and MCU/SW PWB J461 for an open wire or poor contact. If no problem is found, replace the CRU(PL5.1) and MCU/SW...
  • Page 163 Turn on the MAIN POWER SW. Is the voltage 100 VAC Check between the MCU/SW PWB and the corresponding part between the POWER UNIT J8-4(+) and J8-1(-)? for an open wire or poor contact. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-131 CHAPTER 2 TROUBLESHOOTING...
  • Page 164 WorkCentre Pro 423/428 2-132 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting +5VDC POWER FIP (BSD 1.1 1.2 1.3 1.4) ESS +3.3VDC POWER FIP (BSD 19.1) +3.3VDC POWER FIP (BSD 7.2 7.5) Is the voltage +5 VDC between the MCU/SW PWB J400-9(+) Is the voltage +3.3 VDC between the ESS PWB J300-1(+) and...
  • Page 165 Check between the MF MAIN PWB and the corresponding part for an open wire or poor contact. for an open wire or poor contact. for an open wire or poor contact. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-133 CHAPTER 2 TROUBLESHOOTING...
  • Page 166 WorkCentre Pro 423/428 2-134 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting OPTION LVPS +12VDC POWER FIP (BSD 19.1) OPTION LVPS +5VDC POWER FIP (BSD 19.1) OPTION LVPS –12VDC POWER FIP (BSD 19.1) Is the voltage +12 VDC between the OPTION MOTHER PWB...
  • Page 167 Check between the FINISHER LVPS and FINISHER CONT PWB for an open wire or poor contact. Check between FINISHER CONT corresponding part for an open wire or poor contact. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-135 CHAPTER 2 TROUBLESHOOTING...
  • Page 168 WorkCentre Pro 423/428 2-136 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting Power Outlets Check European Union 230 VAC CAUTION European Union 230 VAC ± 10%, Figure 2. Measure the AC Incorrect voltage may damage the machine. The machine must voltage between AC line and neutral and between AC neutral not be connected to the power outlet if the voltage is incorrect.
  • Page 169: General Purpose Fip

    If no problem is found, replace the sensor. Check the sensor installation and external lighting. If no problem is found, replace the sensor. Check the sensor installation. If no problem is found, replace the Sensor. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-137 CHAPTER 2 TROUBLESHOOTING...
  • Page 170 WorkCentre Pro 423/428 2-138 CHAPTER 2 TROUBLESHOOTING 03/02 Level 2 Troubleshooting Solenoid/Clutch not energized FIP Solenoid/Clutch keep energized FIP Turn off the power. Disconnect the PWB connector. Relay PWB Is the resistance less than 10Ÿ between the connector Pin 3 and Frame? Replace the PWB.
  • Page 171 PWB pin 4 and motor pin 1. Replace the motor? Check between the PWB Pin 3 and motor Pin 2 for an open wire or poor contact. Replace the PWB. 03/02 Level 2 Troubleshooting WorkCentre Pro 423/428 2-139 CHAPTER 2 TROUBLESHOOTING...
  • Page 172: How To Use The Diagnostic (c/e) Mode

    WorkCentre Pro 423/428 2-140 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode 2.4 How to Use the Diagnostic (C/E) Mode 2.4.4 Changing the Chain Function Press the Chain No. or Function No. button again. 2.4.1 Entering the Diagnostic (C/E) Mode  After confirming that the input code has been cleared, enter a new code.
  • Page 173: Ascii Code

    2.4.7 ASCII Code Character Hexadecimal Decimal Character Hexadecimal Decimal 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-141 CHAPTER 2 TROUBLESHOOTING...
  • Page 174: Self-diagnosis

    WorkCentre Pro 423/428 2-142 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode 2.4.8 Self-diagnosis System Data for Auto Diagnosis Label Item Self-diagnosis checks inside the machine for a fault. AUTO DIAG SELECT 1 Select auto diagnosis (M/F MAIN PWB/OP-MOT/OM)
  • Page 175 Select auto diagnosis(G4M1) Bit7:ROM Bit6:SRAM Bit5:DPRAM Bit4:CODEC,RCNV,Image RAM Bit3: Internal Loop Back Bit2:DPMC Bit1: Not used Bit0: Not used AUTO DIAG SELECT 11 Select auto diagnosis(ICM) 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-143 CHAPTER 2 TROUBLESHOOTING...
  • Page 176 WorkCentre Pro 423/428 2-144 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Individual Diagnostics Chain Function Code List Chain Function Item Content Chain Function Item Content CODEC,RCNV,Image RAM G3M0 G/A MSBC Register Read/Write Test MAIN-SYS MODEM Register,RAM Check...
  • Page 177 G3M2 CODEC,RCNV,Image RAM G3M2 MODEM Register,RAM Check G3M2 MODEM Loop Back Test G3M2 EEPROM G3M2 G3M0/ICM Loop Back Test G3M2/ICM G3M0/ICM Loop Back Test G3M2/ICM 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-145 CHAPTER 2 TROUBLESHOOTING...
  • Page 178 WorkCentre Pro 423/428 2-146 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Self-Diagnostic Report Board Diag. Items Active Result Detail Code Procedure After the auto diagnostic is completed, select the Menu screen (in the Diag mode). DPMC  Press the Report/List output button.
  • Page 179: Chain Function Codes

    (115 for G3M1/255 and 255 for G3M2) Auto Regi. Adjustment Slow Scan This value enters Ch21-Fun71. Auto Regi. Adjustment Fast Scan This value enters Ch21-Fun70. LD Quantity of Light Check (600dpi) 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-147 CHAPTER 2 TROUBLESHOOTING...
  • Page 180 WorkCentre Pro 423/428 2-148 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Part/Signal Ref. BSD Chain Function Part/Signal Ref. BSD LD Quantity of Light Check (400dpi) OFFSET MOTOR Backward Run ROS Motor Number of Rotations (600dpi)
  • Page 181: Input Check Chain Function Code List

    TRAY3 NEAR END SENSOR TRAY4 NEAR END SENSOR REGI SENSOR T/A ROLL2 SENSOR T/A ROLL3 SENSOR DUP SENSOR DRUM DETECT TONE EMPTY FUSER CONTROL SENSOR (Analog Value) 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-149 CHAPTER 2 TROUBLESHOOTING...
  • Page 182: Nvm Settings

    WorkCentre Pro 423/428 2-150 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode 2.4.9.3 NVM Settings Chain Function Item Min. value Default Max. value Amount of Adjustment Remarks Change Maximum number of pages Transmitted 1 sheet This value is stored in M/F MAIN PWB NVM.
  • Page 183 Delay of Two Clock Pulses in Input Video Data 0:De 1: No delay Memory Overflow Processing During Accumulation 0:Discontinue 1: Continue (Erase all files in 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-151 CHAPTER 2 TROUBLESHOOTING...
  • Page 184 WorkCentre Pro 423/428 2-152 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Min. value Default Max. value Amount of Adjustment Remarks Change case of mechanical fault) Smoothing enabled/disabled 0:disabled 1:enabled Make Edge Count Result Available...
  • Page 185 Fine adj. of density setup Lighter-1Copy (text/photo) Fine adj. of density setup Normal Copy (text/photo) Fine adj. of density setup Daker-1Copy (text/photo) Fine adj. of density setup Daker-2Copy (text/photo) 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-153 CHAPTER 2 TROUBLESHOOTING...
  • Page 186 WorkCentre Pro 423/428 2-154 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Min. value Default Max. value Amount of Adjustment Remarks Change Fine adj. of density setup Lighter-2Copy (photo) Fine adj. of density setup Lighter-1Copy (photo) Fine adj.
  • Page 187 Binary threshold AE Lighter-1 FAX(text) low resolution Binary threshold AE Normal FAX(text) low resolution Binary threshold AE Darker-1 FAX(text) low resolution Binary threshold AE Darker-2 FAX(text) low resolution 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-155 CHAPTER 2 TROUBLESHOOTING...
  • Page 188: Test Print

    WorkCentre Pro 423/428 2-156 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode 2.4.9.4 Test Print Amount of Chain Function Item Min. Default Max. Adjustment Remarks Change value value Analog ASIC Test Print 3X3 Photo Output (600dpi) IPS Test Print: Grid+Slant (1dot) Error Diffusion Output (600dpi)
  • Page 189 (400dpi) Fixed Pattern (400dpi) NVM adjustment of darkness and lighting position Paper Feed Alignment Pattern (400dpi) NVM adjustment of darkness and image registration position 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-157 CHAPTER 2 TROUBLESHOOTING...
  • Page 190: Billing/epsv

    WorkCentre Pro 423/428 2-158 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode 2.4.9.5 Billing/EPSV Chain Function Item Min. Default Max. Amount of Adjustment Remarks value value Change Total number of prints displayed (the present counter 2999997 2999997 No.
  • Page 191 0: No processing 1-31: 1 to 31days Master Periodic Notification Date 1 day 0: No processing 1-31: 1 to 3days Machine Fixed-Time Call Count 1 time 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-159 CHAPTER 2 TROUBLESHOOTING...
  • Page 192: Custom Presets

    WorkCentre Pro 423/428 2-160 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode 2.4.9.6 Custom Presets Chain Function Item Min. Default Max. Amount of Adjustment Remarks value value Change Panel Setting 1: Initial Priority Tray 0:Auto 1:Tray1 2:Tray2 3:Tray3 4:Tray4 9:MSI...
  • Page 193 17:Edit 18:Book duplex/(As book) 19:Annotation 20:Booklet 21:Form synthesis Customized Features (Customized Copy Screen 3) 0:No setting 1:Paper tray 2:Reduction/enlargement 3:Copy darkness 4:Binding margin 5:Hight/Width independent resizing 6:Document type 7:Frame 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-161 CHAPTER 2 TROUBLESHOOTING...
  • Page 194 WorkCentre Pro 423/428 2-162 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Min. Default Max. Amount of Adjustment Remarks value value Change erasure 8:Center shift 9:Not used 10: Continuous page copy 11:Duplex copy 12: Electronic sort 13:N in 1...
  • Page 195 The copy function can be disabled for a client who uses M/C only as a fax. Enable/Disable Time-Specified Power Save 0: disabled 1: enabled Power Save disabled ON/OFF 0:off(disabled) 1:on(enabled) 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-163 CHAPTER 2 TROUBLESHOOTING...
  • Page 196 WorkCentre Pro 423/428 2-164 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Min. Default Max. Amount of Adjustment Remarks value value Change Power Save Time 00:00 2100 23:59 00:00 to 23:59 BCD display Stanby time...
  • Page 197 0: No setting 1: Read resolution 2: Document type 3: screen Read darkness 4: Read size 5: Read resizing factor 6: Duplex document 7: Mixed-size document 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-165 CHAPTER 2 TROUBLESHOOTING...
  • Page 198 WorkCentre Pro 423/428 2-166 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Min. Default Max. Amount of Adjustment Remarks value value Change Function registered at upper right of customized scanner 0: No setting 1: Read resolution 2: Document type 3:...
  • Page 199 0: not used, 1: used Use Tray 3 for FAX reception/Report printing 0: not used, 1: used Use Tray 4 for FAX reception/Report printing 0: not used, 1: used 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-167 CHAPTER 2 TROUBLESHOOTING...
  • Page 200: Hfsi Counter/crum

    WorkCentre Pro 423/428 2-168 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode 2.4.9.7 HFSI Counter/CRUM Chain Function Item Min. value Default Max. value Amount of Adjustment Remarks change Number of copies scanned 999999 Increments at normal termination of a copy scan (one sheet document).
  • Page 201: Fault History/counter

    Stores the C9 count. A1: Document jam (Lead-in section) Stores the A1 count. (excluding A1-2) A2: Document jam (REGISENSOR section) Stores the A2 count. (excluding A2-2) 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-169 CHAPTER 2 TROUBLESHOOTING...
  • Page 202 WorkCentre Pro 423/428 2-170 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Min. value Default Max. value Amount of Adjustment Remarks change A3:Document jam (Ejection section) Stores the A3 count. (excluding A3-2) DADF Misfeed Stores the ADF/DADF Misfeed count.
  • Page 203: Mode Set

    0: plain paper, 1: transparency, 2: thick paper Tray 2 paper type 0: plain paper, 1: transparency, 2: thick paper Tray 3 paper type 0: plain paper, 1: transparency, 2: thick paper 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-171 CHAPTER 2 TROUBLESHOOTING...
  • Page 204 WorkCentre Pro 423/428 2-172 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Functio Item Min. value Default Max. value Amount Adjustment Remarks of change Tray 4 paper type 0: plain paper, 1: transparency, 2: thick paper...
  • Page 205 0:No 1:Yes G3M*14.4kModem and rewrite it automatically. Also rewrite bit0:CH0 bit1:CH1 bit2:CH2 system data automatically. G3M*_MODEM_TX_SPEED G3M*_MODEM_RX_SPEED IIT installed 0:No 1:Yes IOT installed 0:No 1:Yes 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-173 CHAPTER 2 TROUBLESHOOTING...
  • Page 206 WorkCentre Pro 423/428 2-174 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Functio Item Min. value Default Max. value Amount Adjustment Remarks of change Country code for the multinational use 00:JAPAN(JPN) 04:GERMANY(FRG) 09:AUSTRALIA(AUS) 0A:AUSTRIA(AUT) 0F:BELGIUM(BEL) 16:BRAZIL(BRA)
  • Page 207 System Fail or Local Fail1 Count Threshold 0 to 0XFF (0: Not detected) Default: 10 (0X0A) System Fail or Local Fail2 Count Threshold 0 to 0XFF (0: Not detected) Default: 10(0X2A) 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-175 CHAPTER 2 TROUBLESHOOTING...
  • Page 208 WorkCentre Pro 423/428 2-176 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Functio Item Min. value Default Max. value Amount Adjustment Remarks of change System Fail or Local Fail3 Count Threshold 0 to 0XFF (0: Not detected) Default: 10(0X3A)
  • Page 209 Document Jam 4 Count – Object Error Code 1 4A23 0 to 0XFFFF (0: Not detected) Document Jam 5 Count – Object Error Code 1 4A24 0 to 0XFFFF (0: Not detected) 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-177 CHAPTER 2 TROUBLESHOOTING...
  • Page 210: Automatic Diagnostic

    WorkCentre Pro 423/428 2-178 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode 2.4.9.10 Automatic Diagnostic Chain Function Description Object PWB DPRAM G4M0 Chain Function Description Object PWB CODEC G4M0 G/A MSBC Register Read/Write Check MAIN-SYS G4M0 DRAM(LM) Address/Data Bus Check...
  • Page 211 CODEC & G/A RCNV G3M2 MODEM Register, RAM Check G3M2 MODEM Loop Back Test G3M2 EEPROM G3M2 Loop Back(ISDN ch0) G3M2/ICM Loop Back(ISDN ch1) G3M2/ICM 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-179 CHAPTER 2 TROUBLESHOOTING...
  • Page 212: Signal Send Test

    WorkCentre Pro 423/428 2-180 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode 2.4.9.11 Signal Send Test Chain Function Description Object PWB Single Tone 770Hz G3M0/ICM Chain Function Description Object PWB Single Tone 852Hz G3M0/ICM DTMF “#“ Single Tone 941Hz G3M0/ICM DTMF “*“...
  • Page 213 Single Tone 1100Hz G3M0/NCU Ext. V.17 7200bps G3M0/NCU Ext. Single Tone 1209Hz G3M0/NCU Ext. V.21 300bps G3M0/NCU Ext. Single Tone 1300Hz G3M0/NCU Ext. V.34 2400bps G3M0/NCU Ext. 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-181 CHAPTER 2 TROUBLESHOOTING...
  • Page 214 WorkCentre Pro 423/428 2-182 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Description Object PWB Chain Function Description Object PWB DTMF “*“ G3M0/NCU Outer V.34 4800bps G3M0/NCU Ext. DTMF “0“ G3M0/NCU Outer V.34 7200bps G3M0/NCU Ext.
  • Page 215 Chain Function Description Object PWB V.34 26400bps G3M0/NCU Outer V.34 28800bps G3M0/NCU Outer V.34 31200bps G3M0/NCU Outer V.34 33600bps G3M0/NCU Outer 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-183 CHAPTER 2 TROUBLESHOOTING...
  • Page 216: Fax System Data

    WorkCentre Pro 423/428 2-184 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode 2.4.9.12 Fax System Data *:Same feature with Channel 1 **:Same feature with Channel 1 & 2 ***:Same feature with Channel 1, 2, and 3 (Channel 1:Chain code 157, Channel 2:Chain code 257, Channel 3:Chain code 357) When there are two defaults (ex. 10(0A)), the value outside the parentheses is decimal and that inside is hexadecimal.
  • Page 217 0: Not supported 1: Supported iFAX(Internet Fax) Function 0: Not supported 1: Supported iFAX(Internet Fax) Function 0: Not supported 1: Supported iFAX(Internet Fax) Function 0: Not supported 1: Supported 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-185 CHAPTER 2 TROUBLESHOOTING...
  • Page 218 WorkCentre Pro 423/428 2-186 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Content Default Description Access iFAX(Internet Fax) Function 0:TIFF-S 1:TIFF-F 2:TIFF-J Priority Order in Received Document 0:Dial-in 1:Number Display Sorting by Line Services...
  • Page 219 The data can be changed when all send operations to the ISDN line via B2ch guard) restricted need to be restricted. By changing the data, B2ch can be open to be used only as a receive channel. 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-187 CHAPTER 2 TROUBLESHOOTING...
  • Page 220 WorkCentre Pro 423/428 2-188 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Content Default Description Access Restrictions on sending ISDN_ANALOG 0: Send not restricted 1:Send The data can be changed when analog send (G3 Fax/Telephone) by the ISDN restricted line needs to be restricted.
  • Page 221 Specifies whether or not to have the G2/G3FAX functioned as “33. User subscriber’s number (G2/G3 Fax) Communication Capability” when the telephone number has been stored in ISDN ID 3”. 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-189 CHAPTER 2 TROUBLESHOOTING...
  • Page 222 WorkCentre Pro 423/428 2-190 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Content Default Description Access Communication capability of the third 0:Off 1:On Specifies whether or not to have the G4 FAX functioned as “33.
  • Page 223 When the terminal is connected to manual receive operation, this data operation 4.5sec determines the intervals between resend operations for all signals. The data should basically not be changed. 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-191 CHAPTER 2 TROUBLESHOOTING...
  • Page 224 WorkCentre Pro 423/428 2-192 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Content Default Description Access G3M ECM T5 Timer(Common to two 0:30 min. 1:10 min. 2:65 sec. 3:2 Determines the time for monitoring the release of the remote machine from the channels) min.
  • Page 225 TCM capability 0:Off 1:On Selects whether or not to enable the TCM capability. The data should not be changed unless otherwise instructed. 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-193 CHAPTER 2 TROUBLESHOOTING...
  • Page 226 WorkCentre Pro 423/428 2-194 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Content Default Description Access G3 protocol minimum scan capability 0:20ms(T7.7) 1:5ms(T7.7) Selects handling of the minimum scan capability that can be instructed by ITU- 2:10ms(T7.7) 3:20ms(2T7.7)
  • Page 227 This data specifies the frame size of the send side when ECM communication is made. The ITU-T recommendation specifies to use 64 and 256 but the data has never been changed. 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-195 CHAPTER 2 TROUBLESHOOTING...
  • Page 228 WorkCentre Pro 423/428 2-196 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Content Default Description Access 692** G3M0 ECM CTC Number 0:000 to 7:111 Determines whether or not to send the CTC signal (including the fall back data) after sending the identical frame the specific times.
  • Page 229 When “All channels” is selected, it is necessary to understand the usage before changing data as the trace storage capacity for a channel will be reduced. 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-197 CHAPTER 2 TROUBLESHOOTING...
  • Page 230 WorkCentre Pro 423/428 2-198 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Fax Feature Setup List (Image process/Send operation) When there are two defaults (ex. 10(0A)), the value outside the parentheses is decimal and that inside is hexadecimal.
  • Page 231 However, the IOT will be used more frequently and it will be harder to use the dual access feature that uses IOT. 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-199 CHAPTER 2 TROUBLESHOOTING...
  • Page 232 WorkCentre Pro 423/428 2-200 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Description Default Description Access by File threshold to boot jobs (activating the 1 to 400files(w/o HDD) 1 to Checks the number of files left, apart from checking the remaining...
  • Page 233 Selecting Auto Deletion for polled 00:Not to be deleted 01:To be Determines how to handle the polled (confidential) documents stored in User documents deleted after comm. memory 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-201 CHAPTER 2 TROUBLESHOOTING...
  • Page 234 WorkCentre Pro 423/428 2-202 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Description Default Description Access by Selecting Auto Deletion for Documents 0: To be deleted after comm.1: To User received in the Mail Box be stored after comm.
  • Page 235 Timer value for auto start when 0 to 59 sec. abbreviated dialling or quick dialling (including group or wild card " * ") is specified 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-203 CHAPTER 2 TROUBLESHOOTING...
  • Page 236 WorkCentre Pro 423/428 2-204 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Description Default Description Access by Number of speed dials available 0 to 65535 200:with MMB-A installed 500:with MMB-B installed Resending for Send Fault documents by...
  • Page 237 Permitting the existence of multiple time- 0:Permit 1:Do not permit specified polling Restricting Forced 4800 bps setting menu 0: Do not restrict 1: Restrict to support PTT 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-205 CHAPTER 2 TROUBLESHOOTING...
  • Page 238 WorkCentre Pro 423/428 2-206 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode Chain Function Item Description Default Description Access by Restricting Local ID setting menu to 0: Do not restrict 1: Restrict support PTT...
  • Page 239 0 to 255 sec. ISDN T310 timer 7 to 255 sec. 1step=1 sec. ICM trace layer type 05:Layer 07:Layer 0F:Layer 1+2+3 V8 capability 00:Off 01:On 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-207 CHAPTER 2 TROUBLESHOOTING...
  • Page 240 WorkCentre Pro 423/428 2-208 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode • The circled numerals indicate the call restriction functions. (See the table at right.) System Data and Uses of Call Restriction • Call restriction The arrows indicate the flow directions of sent signals.
  • Page 241 OFF by setting "Disable" here. (However, JBIG does document read.) 1=MH, 2=MR, 3=MMR, 5=JBIG-BASIC, 6=JBIG-OPTION polling -- "58-051" sets the document read mode. (Do not use 6 reserved for future use.) 03/02 How to use the Diagnostic C/E Mode WorkCentre Pro 423/428 2-209 CHAPTER 2 TROUBLESHOOTING...
  • Page 242 WorkCentre Pro 423/428 2-210 CHAPTER 2 TROUBLESHOOTING 03/02 How to use the Diagnostic C/E Mode...
  • Page 243 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 245 C - 23 Moiré ......................24 C - 24 Poor fusing....................24 C - 25 Poor registration: Copy sample..............25 C - 26 Uneven density: Copy sample ..............26 C - 27 Wrinkle in copies..................26 03/02 Contents WorkCentre Pro 423/428 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 246 WorkCentre Pro 423/428 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING 3.1 Introduction 3.1 Introduction 3.1.2 How to Use the Image Troubleshooting 3.1.1 Chapter 3 Composition and Distinction 1. Select a page corresponding to the image quality troubleshooting to be executed from the Contents and following the corrective action procedure instructed therein.
  • Page 247 The character reproducing level of a document send/received using the fax feature is specified. Judgment procedure: Conduct send/receive using Test Pattern (499T281) and observe character patterns at two areas. 3.2 Image Quality Specifications WorkCentre Pro 423/428 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 248 WorkCentre Pro 423/428 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING 3.2 Image Quality Specifications E. Lead Edge Registration Observe density and uniformity at three solid areas. l 499T281 Terminology description: Represents deviation between lead edges of copy images and paper. The degree Print the Test Pattern using the fax send/receive features and observe density and of deviation is specified.
  • Page 249 G1: Lead Edge Skew Skip and Smear G2: Side Edge Skew Resolution Line Copy Density Legibility Solid Reproducibility Lead Edge Registration White area: Background Fig.1 A3 Test Pattern (499T247) j0hn3001 3.2 Image Quality Specifications WorkCentre Pro 423/428 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 250 WorkCentre Pro 423/428 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING 3.2 Image Quality Specifications 3.2.3 Built-in Test Pattern Dark pattern with continuous gradation in MCU/SW PWB fast scan direction (64 gradations) With DocuCentre230/280, the Built-in Test Pattern can be printed out. This is used for...
  • Page 251 IIT board may bands) [23-11] have the problem. Perform an appropriate troubleshooting by referring to 3.3.5 Corrective action against image quality problems. ROS Unit 3.2 Image Quality Specifications WorkCentre Pro 423/428 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 252 WorkCentre Pro 423/428 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING 3.2 Image Quality Specifications Image Quality Test Pattern How to identify the problem area Problem Deletion Grid (4-Bit) When the defect is generated to the specific Test (Image with [23-13] Pattern, the IOT control board may have the...
  • Page 253 5. Host-side check for an image quality fault l Check whether the fault depends on the application. l Try printing from another client. l Try printing by another application. 3.3 Image Quality Troubleshooting WorkCentre Pro 423/428 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 254 WorkCentre Pro 423/428 3-10 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING 3.3 Image Quality Troubleshooting 2) Light copies When the built-in Test Pattern has background, check XERO related components l Check (CRU, BTR, or DST) for problems. • 1. Check that the values are correctly set up in the Diag Code [21-5] to [21-37]. (See Replace the CRU, then HVPS.
  • Page 255 • Clean the ROS window. • Laser light blocked • Remove obstacles on the light path. • Clean the white reference board. Contamination of white reference board 3.3 Image Quality Troubleshooting WorkCentre Pro 423/428 3-11 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 256 WorkCentre Pro 423/428 3-12 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING 3.3 Image Quality Troubleshooting Cause Corrective action C - 2 White copies • Check NVM setup data. [21-37] Inappropriate AE setup data Copy sample • Check NVM setup data. [21-56][21-57] Inappropriate shading compensation coefficient •...
  • Page 257 Toner time and does not generate • Toner blocking status code [U3-3]. See BSD 6.5/6.3/6.4. SOS signal failure, lowered ROS Power, or revolution failure of ROS Motor 3.3 Image Quality Troubleshooting WorkCentre Pro 423/428 3-13 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 258 WorkCentre Pro 423/428 3-14 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING 3.3 Image Quality Troubleshooting Cause Corrective action C - 5 White off Copy sample can be the cause. • Repair or replace BTR. Poor contact of BTR (Deformed bias plate) j0hn3008...
  • Page 259 4-BIT line pattern) to check and IIT/IPS PWB isolate faulty board. • Replace CCD PWB. Control board • Faulty CCD PWB • Clean the mirrors. IIT No.1 - 3 mirrors are dirty. 3.3 Image Quality Troubleshooting WorkCentre Pro 423/428 3-15 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 260 WorkCentre Pro 423/428 3-16 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING 3.3 Image Quality Troubleshooting Black lines Copy sample Black spots Copy sample C - 8 C - 9 j0hn3011 j0hn3012 Symptom: Black lines (Black lines of below 1mm width appear on copies in the transverse...
  • Page 261 • Replace CCD PWB. Control board • Faulty CCD PWB Heat/Pressure Roller (at 94mm • Clean/replace the appropriate roller. intervals) Fuser • Contamination, quality change and deterioration of Heat/Pressure Roller 3.3 Image Quality Troubleshooting WorkCentre Pro 423/428 3-17 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 262 WorkCentre Pro 423/428 3-18 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING 3.3 Image Quality Troubleshooting High background Copy sample Solid black copies C - 12 C - 13 Copy sample j0hn3015 j0hn3016 Symptom: High background Symptom (Contamination of white areas by toner particles)
  • Page 263 Problem occurs in DADF mode. • Dirty, worn, or deformed Feed/Retard Roll • Clean or replace Platen Roll. Problem occurs in DADF mode. • Dirty Platen Roll 3.3 Image Quality Troubleshooting WorkCentre Pro 423/428 3-19 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 264 WorkCentre Pro 423/428 3-20 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING 3.3 Image Quality Troubleshooting Smear Copy sample Jitter/Data error Copy sample C - 15 C - 16 j0hn3018 j0hn3019 Symptom: Smear (Copies with blurred images) Symptom: Jitter/Data error (Zigzag lines in copy feed direction) •...
  • Page 265 • Replace Roller/Gear. Worn or faulty DADF Document Feed Rollers/Gears • Replace MCU/SW PWB. • Check Main Drive Assy. (PL 1.1) Vibration of Drum • Replace CRU. 3.3 Image Quality Troubleshooting WorkCentre Pro 423/428 3-21 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 266 WorkCentre Pro 423/428 3-22 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING 3.3 Image Quality Troubleshooting Magnification failure Copy sample Poor resolution C - 19 C - 20 Copy sample j0hn3022 Symptom j0hn3023 l Magnification failure Symptom: Poor resolution l Vertical magnification failure of DADF Use Diag Code [21-80] to [21-87] for adjustment.
  • Page 267 • Check NVM setup data. Fuser (At 94mm intervals) • Faulty setting of Fuser (Diag: [20-100 to 106]) temperature • Replace CRU. Toner (At 55mm intervals) • Mag Roller failure 3.3 Image Quality Troubleshooting WorkCentre Pro 423/428 3-23 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 268 WorkCentre Pro 423/428 3-24 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING 3.3 Image Quality Troubleshooting Moiré Poor fusing C - 23 C - 24 Copy sample Copy sample j0hn3027 j0hn3026 Symptom Symptom Poor fusing Moiré (Images on copies that can easily be removed by rubbing using a finger.) (Copied patterns have interference fringe when the printed Document is copied.)
  • Page 269 Deviation of side registration • Instruct the customer to load paper correctly. • Wrong orientation of DADF • Adjust DADF scanning position as needed. Document Guide [21-82] (ADJ 3.1.3) 3.3 Image Quality Troubleshooting WorkCentre Pro 423/428 3-25 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 270 WorkCentre Pro 423/428 3-26 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING 3.3 Image Quality Troubleshooting Wrinkle in copies C - 27 Copy sample C - 26 Uneven density: Copy sample j0hn3030 j0hn3029 Symptom Symptom Wrinkle in copies Uneven density Cause Corrective action...
  • Page 271 (Fix the glass while pressing to the left and rear.) Glass • Install the Carriages correctly. IIT skew (Image distortion) • Incorrect parallelism between Full and Half Rate Carriages 3.3 Image Quality Troubleshooting WorkCentre Pro 423/428 3-27 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
  • Page 272 WorkCentre Pro 423/428 3-28 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING 3.3 Image Quality Troubleshooting Black bands Dark copies C - 29 C - 30 Copy sample Copy sample j0hn3032 j0hn3033 Symptom Symptom Black bands Dark copies (Copies with black bands in the feed direction) (Density level of text/photo is higher than standard.)
  • Page 273 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT...
  • Page 275 REP 9.5.1 Option Mother PWB..............24 ADJ 13.6.1 Adjusting the Paddle Position ..........53 REP 9.7.1 Feed Roll ..................25 REP 9.7.2 Retard Roll................25 REP 10.1.1 DADF Assembly..............26 REP 10.1.2 DADF Platen Glass ...............27 03/02 Contents WorkCentre Pro 423/428 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT...
  • Page 276 WorkCentre Pro 423/428 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.1 Introduction 4.1 Introduction 7. [Modification]: A modification number is shown before the title or procedure for which a difference 4.1.1 Using Disassembly, Assembly, and Adjustment is between the preceding and modified contents.
  • Page 277 Kit, remove the HDD. (Figure-1) 9. Remove the Feed Clutch Assembly. (Figure-3) 4.2 Disassembly and Assembly 1) Disconnect the connectors (2). 1) Remove the screws (2) and standoff. 2) Remove the screws (4). 2) Remove the Bracket. 1. Drive 3) Remove the HDD. 3) Remove Bearing Feed...
  • Page 278 WorkCentre Pro 423/428 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly 11. Remove the Main Motor Assembly. (Figure-5) 2. Paper Transport Installation 1) Disconnect the connector. Procedure REP 2.2.2 Size Cam 2) Remove the KL-Clip. 1. Perform the removal steps in reverse order with the 3) Remove the Gear.
  • Page 279 2. Install the Size Cam while aligning its hole with the REP 2.4.1 R/H Chute Assembly U groove of the Tray. (Figure-2) Ref. PL: PL2.4 1) Install the Size Cam. Removal 2) Insert the Lock Pin. On printer or Fax-equipped machines, ensure that outstanding jobs have cleared before servicing or interrupting the power to the machine as follows:.
  • Page 280 WorkCentre Pro 423/428 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly REP 2.4.2 Exit Assembly REP 2.4.3 OCT Assembly 4. Remove the Exit Assembly. (Figure-2) Ref. PL: PL2.4 Ref. PL: PL2.4 1) Remove the screw. Removal Removal 2) Push in the Rear Upper Rail.
  • Page 281 4. Remove the R/H Lower Cover. (Figure-1) 5. Remove the OCT Assembly. (Figure-2) REP 2.11.1 Registration Chute Assembly 1) Remove the screws (2). 1) Disconnect the connectors (2). Ref. PL: PL2.11 2) Remove the Handle. 2) Remove the screw. Removal 3) Remove the screws (2).
  • Page 282 WorkCentre Pro 423/428 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly Installation 3. IIT Procedure REP 3.1.1 Platen Glass 1. Perform the removal steps in reverse order with the Ref. PL PL3.1 following notes in mind. Removal Note...
  • Page 283 3. Remove the IIT/IPS PWB. (Figure-2) 1) Remove the screw. REP 3.1.2 IIT/IPS PWB Procedure 2) Remove the Stopper. Ref. PL PL3.1 1. Remove the following parts. 3) Remove the screws (8). • Removal 4) Remove the IIT/IPS PWB. Platen Glass(REP3.1.1) •...
  • Page 284 WorkCentre Pro 423/428 4-10 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly 2. Remove the Lens Assembly and CCD PWB. REP 3.2.1 Lens Assembly and CCD PWB (Figure-1) REP 3.3.1 Timing Pulley Ref. PL PL3.2 1) Disconnect the connectors (2).
  • Page 285 2. Release the Full Rate Carriage from the REP 3.3.2 Carriage Cable Carriage Cable. (Figure-1) Ref. PL PL3.3 1) Remove the screws (2). Removal Note Since the replacement procedure is the same for the Front and Rear Carriage Cables, the procedure is given for the rear only.
  • Page 286 WorkCentre Pro 423/428 4-12 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly Installation Reference Indicate the number of windings about Procedure the Front and Rear Carriage Cables. 1. Wind the auxiliary Carriage Cable around the Pulley. (Figure-6) (Figures- 3, -4, and -5) 1) Put the ball of the Carriage Cable in the groove of the Pulley.
  • Page 287 3. Install the spring hook side of the Carriage Cable. Reference The Front Carriage Cable is routed as REP 3.4.1 Exposure Lamp (Figure-8) shown here. (Figure-9) Ref. PL PL3.4 1) Hook the Cable on the Frame Pulley. Removal 2) Hook the Cable on the Right Pulley of the Half 1) Secure the Full Rate Carriage Cable on the Rate Carriage.
  • Page 288 WorkCentre Pro 423/428 4-14 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly REP 3.4.2 Lamp Wire Harness 2. Remove the Exposure Lamp. (Figure-1) 2. Remove the screws that secure the Full Rate Ref. PL PL3.4 1) Disconnect the connector.
  • Page 289 3. Remove the Holder. (Figure-2) REP 3.5.1 Platen Cushion 1) Remove the screw. Ref. PL PL3.5 2) Remove the Stopper. Removal 3) Remove the screw. 4) Remove the Holder. On printer or Fax-equipped machines, ensure that 5) Disconnect the connector. outstanding jobs have cleared before servicing or 6) Release the Clamp.
  • Page 290 WorkCentre Pro 423/428 4-16 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly REP 3.6.1 Control Panel Installation Ref. PL PL3.6 Note After peeling off the Platen Cushion, Removal remove the remaining tape cleanly from the Platen Cushion. On printer or Fax-equipped machines, ensure that...
  • Page 291 4. ROS 2. Remove the Cover. (Figure-1) 3. Remove the ROS. (Figure-2) REP 4.1.1 ROS 1) Remove the screws (2). 1) Remove the screws (4). 2) Remove the Bracket. Ref. PL PL4.1 2) Disconnect the connectors (2). 3) Remove the screws (4). 3) Remove the ROS.
  • Page 292 WorkCentre Pro 423/428 4-18 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly 6. Fuser REP 6.2.1 Pressure Roll Ref. PL: PL6.2 REP 6.1.1 Fuser Assembly Removal Ref. PL: PL6.1 Removal On printer or Fax-equipped machines, ensure that outstanding jobs have cleared before servicing or On printer or Fax-equipped machines, ensure that interrupting the power to the machine as follows:.
  • Page 293 Installation REP 6.2.2 Heater Rod Ref. PL: PL6.2 Note Tighten the Nip Screws (Front and Rear) up to the position shown below. (Figure- Removal On printer or Fax-equipped machines, ensure that outstanding jobs have cleared before servicing or interrupting the power to the machine as follows:. •...
  • Page 294 WorkCentre Pro 423/428 4-20 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly 7. Electrical 2. Remove the Exit Chute Assembly. (Figure-1) 3. Remove the Heater Rod. (Figure-2) REP 7.2.1 MCU/SW PWB Assembly 1) Remove the screws (3). 1) Remove the screws (2).
  • Page 295 6.Enter C/E Mode. REP 7.5.1 ESS PWB Assembly 7.Enter the Chain/Function code “20/67” and press Ref. PL: PL7.5 Start button. (Initializing IOT NVM of the new MCU/SW PWB) Replacement 8. Download the electronic billing counter from IIT/IPS PWB to MCU/SW PWB. On printer or Fax-equipped machines, ensure that 9.
  • Page 296 WorkCentre Pro 423/428 4-22 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly 8. Covers 9. Cabinet REP 8.1.1 Top Cover REP 9.1.1 Drive Joint Ref. PL PL8.1 Ref. PL PL9.1 Removal Removal On printer or Fax-equipped machines, ensure that...
  • Page 297 3. Remove the Bracket. (Figure-2) 2. Remove the Harness Guide. (Figure-1) 1) Remove the screws (2). 5. Remove the joint drive. (Figure-4) 1) Remove the Harness from the Wire Guides (7). 2) Remove the Bracket. 1) Remove the E-clip and Gear. 2) Push the Hooks (4).
  • Page 298 WorkCentre Pro 423/428 4-24 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly REP 9.5.1 Option Mother PWB 2. Remove the NCU-C PWB. (Figure-1) 4. Remove the Option Mother PWB. (Figure-3) Ref. PL:PL9.5 1) Remove the PWBs (3). 1) Remove the screws (8).
  • Page 299 (Figure-1) j0hn4908 REP 9.7.1 Feed Roll REP 9.7.2 Retard Roll Ref. PL PL9.7 Ref. PL PL9.7 3. Remove the Feed Roll. (Figure-2) Removal Removal 1) Remove the E- lip. 2) Remove the Feed Roll. On printer or Fax-equipped machines, ensure that On printer or Fax-equipped machines, ensure that outstanding jobs have cleared before servicing or outstanding jobs have cleared before servicing or...
  • Page 300 WorkCentre Pro 423/428 4-26 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly 2. Remove the Retard Roll Assembly. (Figure-1) 4. Remove the Retard Roll. (Figure-3) 10. DADF 1) Push the Hooks on both sides. 1) Push the Hook in the direction of the arrow.
  • Page 301 REP 10.1.2 DADF Platen Glass REP 10.1.3 DADF Platen Cushion Ref. PL PL10.1 Ref. PL PL10.1 Installation Removal On printer or Fax-equipped machines, ensure that On printer or Fax-equipped machines, ensure that outstanding jobs have cleared before servicing or outstanding jobs have cleared before servicing or interrupting the power to the machine as follows:.
  • Page 302 WorkCentre Pro 423/428 4-28 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly Installation REP.10.2.1 DADF Feeder Assembly Procedure Ref. PL PL10.2 1. Affix the DADF Platen Cushion. (Figure-2) Removal 1) Press the Platen Cushion gently in the direction of the arrow.
  • Page 303 REP 10.3.1 Left/Right Counter Balance REP 10.5.1 DADF Nudger Roll Ref. PL PL10.3 Ref. PL PL10.5 Removal Removal On printer or Fax-equipped machines, ensure that On printer or Fax-equipped machines, ensure that outstanding jobs have cleared before servicing or outstanding jobs have cleared before servicing or interrupting the power to the machine as follows:.
  • Page 304 WorkCentre Pro 423/428 4-30 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly REP10.5.2 DADF Feed Roll 3. Remove the DADF Feed/Nudger Roll Assembly. Ref. PL PL10.5 (Figure-2) Removal 1) Remove the KL-Clip. 2) Remove the Bearing. On printer or Fax-equipped machines, ensure that 3) Remove the DADF Feed/Nudger Roll Assembly.
  • Page 305 3. Remove the DADF Feed/Nudger Roll Assembly. Note When installing the chute, insert the (Figure-2) projections (2) securely into the Top Cover 1) Remove the KL-clip. holes. (Figure-5) 2) Remove the Bearing. 3) Remove the DADF Feed/Nudger Roll Assembly. (Figure-3) j0hn4a14 Installation (Figure-5) j0hn4a13 Procedure...
  • Page 306 WorkCentre Pro 423/428 4-32 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly 5. Remove the Belt. (Figure-3) REP 10.6.1 Reg Roller 1) Remove the screws (2). Ref. PL PL10.6 2) Remove the Motor and Bracket. 3) Remove the Belts (2).
  • Page 307 7. Remove the Read 1/2 Roller. (Figure-5) Remove the Reg. Roller. (Figure-8) 1) Remove the KL-clip (2). 1) Remove the KL- lip and Bearing. 2) Remove the Pulleys (2). 2) Remove the Reg Roller. 3) Remove the Bearings (2). 4) Remove the KL- lip and Bearing. 5) Remove the Pulley and Bearing.
  • Page 308 WorkCentre Pro 423/428 4-34 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly REP 10.6.2 Size Sensor Assembly 11. MSI 4. Remove the Size Sensor Assembly. (Figure-1) Ref. PL:PL10.6 REP 11.1.1 MSI Assembly 1) Disconnect the connector. Removal 2) Release the Hook.
  • Page 309 REP 11.4.1 MSI Feed Roll Installation 2. Remove the MSI Assembly. (Figure-1) Ref. PL PL11.4 Procedure 1) Disconnect the connectors (3). 1. Perform the removal steps in reverse order. with the Removal 2) Remove the screw. following notes in mind. 3) Remove the screws (2).
  • Page 310 WorkCentre Pro 423/428 4-36 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly 2) Remove the spring. REP 11.4.2 MSI Retard Roll 13. Finisher 3) Remove the MSI Retard Roll with the clutch. Ref. PL PL11.4 REP 13.1.1 Finisher Assembly Removal Ref.
  • Page 311 REP 13.4.1 Stapler Motor Ref. PL: PL13.4 Removal On printer or Fax-equipped machines, ensure that outstanding jobs have cleared before servicing or interrupting the power to the machine as follows:. • FAX equipped machines: Ensure that the “Job in Memory” indicator on the control panel goes out. Press “Job Status:Stop”...
  • Page 312 WorkCentre Pro 423/428 4-38 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly 3. Remove the Gear Assembly. (The Connector may 4. Remove the Staple Assembly. (Figure-3) 5. Remove the Slide Tray. (Figure-4) remain connected.)(Figure-2) 1) Remove the Screw and the Earth Wire.
  • Page 313 REP13.5.1 Reverse Motor Belt 6. Remove the Staple Motor. (Figure-5) Ref. PL:PL13.5 1) Remove the screws (3). Removal 2) Disconnect the connector. 3) Remove the Staple Motor. On printer or Fax-equipped machines, ensure that outstanding jobs have cleared before servicing or interrupting the power to the machine as follows:.
  • Page 314 WorkCentre Pro 423/428 4-40 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly REP 13.5.2 Feed Motor Belt Installation Ref. PL: PL13.5 4. Remove the Reverse Motor. (Figure-3) Procedure 1) Remove the screws (3). Removal 1. Perform the removal steps in reverse order with the 2) Remove the Reverse Motor.
  • Page 315 3. Remove the Feed Motor. (Figure-2) REP 13.12.1 Compiler Motor Installation 1) Loosen the screw. Ref. PL PL13.12 2) Disconnect the connector. Procedure Removal 3) Remove the screws (2). 1. Perform the removal steps in reverse order. with the 4) Remove the Motor. following notes in mind.
  • Page 316 WorkCentre Pro 423/428 4-42 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly 3. Remove the Compiler Motor. (Figure-2) 5. Remove the Bearing. (Figure-2) REP 13.14.1 Exit Roller Assembly 1) Remove the screws (2). 1) Remove the Bearing. Ref. PL PL13.14 2) Pull out the Compiler Motor.
  • Page 317 1) Release the Hook and remove the Bearing. REP 13.14.2 In-Roller Assembly 6. Remove the Exit Roller Assembly. (Figure-3) 2) Slide the Roller in the direction of the arrow. Ref. PL PL13.14 1) Release the Hook and remove the Pulley. Removal 2) Remove the Bearing.
  • Page 318 WorkCentre Pro 423/428 4-44 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.2 Disassembly and Assembly 6. Remove the In-Roller Assembly. (Figure-3) 1) Release the Hooks (2) and remove the Pulley. REP 13.14.3 Lower Paper Guide 2) Remove the Bearing. Ref. PL: PL13.14 3) Extract the Pin.
  • Page 319 4. Remove the Vertical Paper Guide. (Figure-3) 6. Remove the Separator Guide. (Figure-5) REP 13.16.1 Finisher Control PWB 1) Remove the screws (4). 1) Remove the spring. Ref. PL PL13.16 2) Remove the Vertical Paper Guide. 2) Remove the Separator Guide. Removal On printer or Fax-equipped machines, ensure that outstanding jobs have cleared before servicing or...
  • Page 320 WorkCentre Pro 423/428 4-46 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.3 Adjustment Installation 2. Disconnect the connectors. (Figure-1) 4.3 Adjustment Procedure 1) Disconnect the connectors (16). 1. Perform the removal steps in reverse order. 3. IIT ADJ 3.1.1 IIT Lead Edge Registration (Home...
  • Page 321 Adjustment Adjustment ADJ 3.1.2 IIT Side Registration (Home Position in 3. Enter the C/E mode and enter the Chain/Function 1. Enter the C/E mode and enter the Chain/Function Fast Scan Direction) Code, “6/30”. Code, “6/31”. 4. Press the Start button to start Auto Registration 2.
  • Page 322 WorkCentre Pro 423/428 4-48 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.3 Adjustment ADJ 3.1.3DADF Registration ADJ 3.1.4 Magnification Adjustment SEF (Slow Purpose To set up lead edge (in the slow scan Nominal Scan Direction) direction) and side registration (in the Fast scan...
  • Page 323 [1.] IOT Vertical Magnification Adjustment (Main Motor [2.] IIT Vertical Magnification Adjustment (Scan Motor Note Perform the following adjustment only for the speed adjustment) speed DADF equipped models. adjustment) [3.] DADF Vertical Magnification Adjustment (Document Check Inst. The IOT Vertical Magnification Adjustment should Feed speed adjustment) 1.
  • Page 324 WorkCentre Pro 423/428 4-50 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.3 Adjustment [4.] DADF Vertical Magnification Adjustment on Adjustment ADJ 3.1.5 Magnification Adjustment in LEF (Fast sending Fax (Document Feed speed adjustment on 1. Enter the C/E mode. Scan Direction) sending Fax) 2.
  • Page 325 ADJ 3.4.1 Position of Full/Half Rate Carriage 7. ELECTRICAL Ref. PL: PL3.4 ADJ 7.1 Registration Procedure Purpose Optimise the positional relationship of the 1. IOT Lead Edge Registration (Adjustment of IOT Full/Half Rate Carriage. (write) in slow scan direction) • l Chain Code 20 Function Code 1(ADJ 7.2.1) Adjustment On printer or Fax-equipped machines, ensure that...
  • Page 326 WorkCentre Pro 423/428 4-52 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.3 Adjustment ADJ 7.2.1 IOT Lead Edge Registration ADJ 7.2.2 IOT Side Registration ADJ 7.2.3 Edge Erase Amount Adjustment Purpose To align the copy image on the Drum to the...
  • Page 327 • l Lead Edge …… 6/93 4. With the Exit Transport Guide up (initial state), align 13. Finisher the Paddle Guide (resin section) with the convex. Nominal ADJ 13.6.1 Adjusting the Paddle Position (Figure-1) Set range Ref. PL: PL13.6 Changes 0.0423mm / 1Step Purpose Optimise the positional relationship between the Paddle Guide and Gear.
  • Page 328 WorkCentre Pro 423/428 4-54 CHAPTER 4 DISASSEMBLY/ASSEMBLY AND ADJUSTMENT 03/02 4.3 Adjustment 6. After adjustment, check that the dimension from the rubber section of the Paddle Guide to the bottom face of the Exit Transport Guide is about 5.6 mm.
  • Page 329 CHAPTER 5 PARTS LIST...
  • Page 331 PL 13.7 Transfer Motor, C Paper Guide ................ 70 PL 7.2 IOT Electrical (2/2) ..................... 31 PL 13.8 Top Cover, FT Paper Guide ................71 PL 7.3 MF Box (1/2) ...................... 32 PL 13.9 L/H Upper Cover ....................72 03/02 Contents WorkCentre Pro 423/428 CHAPTER 5 PARTS LIST...
  • Page 332 WorkCentre Pro 423/428 CHAPTER 5 PARTS LIST 03/02 Contents PL 13.10 Exit Transport Base Guide ................73 PL 13.11 L/H Lower Cover .................... 74 PL 13.12 Compiler Motor....................75 PL 13.13 R/H Cover ...................... 76 PL 13.14 Exit Roller Assembly ..................77 PL 13.15 Upper Paper Guide ..................
  • Page 333 Order the old part unless especially instructed or there is any special reason. Indicates that the user should use either of (Alternate) the parts described in the DESCRIPTION column (alternate). 03/02 5.2 Parts List WorkCentre Pro 423/428 CHAPTER 5 PARTS LIST...
  • Page 334 WorkCentre Pro 423/428 CHAPTER 5 PARTS LIST 03/02 5.1 Preface Term and symbol Description When this symbol is indicated in the part number column, a number within a circle shows that the whole and framed areas of the figure are the configurations after the...
  • Page 335 Gear 30BG Gear 30BH Gear 30BJ Screw 30BK Gear 30BL Gear 30BM 127K32301 Main Drive Motor 3011 7E67880 Gear 301N 7E67890 Gear 30BP 59E96810 Collar 30BQ 7E67331 Gear 30BR 03/02 5.2 Parts List WorkCentre Pro 423/428 CHAPTER 5 PARTS LIST...
  • Page 336 WorkCentre Pro 423/428 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 2 Paper Transport 130E82740 Tray 1 Near End Sensor 50R1 PL 2.1 Tray1 802K29710 Tray 1 Size Switch Assembly (Items 3-5) 50R2 Bracket...
  • Page 337 Plate 50CV Screw 50CW Sector 50CX 50CY Gear Lock Pin 50D1 8E93990 Size Cam 50D2 809E33481 Earth Plate 50D3 120E20821 Actuator 50D4 892E43611 Label (1) 50D5 15K53422 Plate 50D6 03/02 5.2 Parts List WorkCentre Pro 423/428 CHAPTER 5 PARTS LIST...
  • Page 338 WorkCentre Pro 423/428 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 2.3 Paper Feed (1/2) Bracket 50S4 Bearing 50S5 121K23840 Feed Clutch 5092 11K96900 Coupling 50S6 7E71460 Gear 5093 54K19786 T/A Roller Chute Assembly (PL 2.5)
  • Page 339 Rear Upper Rail 50BN 32E17170 Guide 50BP Spring 50BQ Screw 50BR Plate 50BS 50E17462 Side Tray (Base) 50BT 50E17472 Side Tray (Extension) 50BV 19E50061 Holder 50BW 36K91520 Paper Weight 50BX 03/02 5.2 Parts List WorkCentre Pro 423/428 CHAPTER 5 PARTS LIST...
  • Page 340 WorkCentre Pro 423/428 5-10 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 2.5 T/A Chute Assembly T/A Roller Chute 50E1 120E20651 Actuator 50E2 22K62541 T/A Roller 50E3 22K62551 T/A Roller 1 50E4 Pulley 50E5...
  • Page 341 T/A Pinch Chute 50FG 22E87802 Pinch Roller 50FH Spring (Out) 50FJ 22E87822 Pinch Roller 50FK 809E11080 Spring 50FL Spacer 50FM Bracket 50FN 162K65131 Wire Harness (DC6) 50FP Spring (in) 50FQ 03/02 5.2 Parts List WorkCentre Pro 423/428 5-11 CHAPTER 5 PARTS LIST...
  • Page 342 WorkCentre Pro 423/428 5-12 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 2.7 Exit Assembly Exit Assembly (Items 2-32) 5411 802E26070 Top Exit Cover 54B1 802E26091 Exit Cover 54B2 54E18722 Exit Upper Chute 54B3...
  • Page 343 54DE Gear 54DF 121K26362 Exit Gate Solenoid 54DG 162K65220 Wire Harness 54DH 59K20880 F/U Pre Exit Roller 54DJ Bearing 54DK 59K20870 F/U Exit Roller 54DL Bracket (Front) 54DM 03/02 5.2 Parts List WorkCentre Pro 423/428 5-13 CHAPTER 5 PARTS LIST...
  • Page 344 WorkCentre Pro 423/428 5-14 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 2.9 OCT Assembly (2/3) 54K19952 Lower Chute Assembly (Items 2-5) 54F1 Lower Chute 54F2 Holder 54F3 59K15590 Pinch Roller 54F4 Spring 54F5...
  • Page 345 F/U Exit Upper Chute 54E9 105E10900 Eliminator (out) 54EB Eliminator Plate 54EC Eliminator Plate 54ED 54E18743 Gate 54EE 809E29761 Spring 54EF 105E10631 Eliminator 54EG 105E10890 Eliminator (in) 54EH 03/02 5.2 Parts List WorkCentre Pro 423/428 5-15 CHAPTER 5 PARTS LIST...
  • Page 346 WorkCentre Pro 423/428 5-16 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 2.11 Registration 32K94833 Registration Front Guide 53B1 32K94842 Registration Rear Guide 53B2 22E87782 Registration Roller (Metal) 5313 15K51562 Plate Inlet 53B4 7E55450...
  • Page 347 Eliminator 53CM 117K31981 Code(TR) 53CN 117K31991 Code (DTS) 53CP 32E16541 Link Guide 53CQ 32E16551 Link Guide 53CR 809E29961 Spring 53CS 12K94140 Link 53CT 12K94151 Link 53CV Spacer 53CW 03/02 5.2 Parts List WorkCentre Pro 423/428 5-17 CHAPTER 5 PARTS LIST...
  • Page 348 WorkCentre Pro 423/428 5-18 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 3 IIT 90K92811 Platen Glass Assembly (Items 2-4)(FX) 1021 PL 3.1 Platen Glass and IPS PWB 90K92962 Platen Glass Assembly (Items 2-4)(ECK)
  • Page 349 Lens Assembly and CCD PWB (DMO-E) 1031 Lens Assembly and CCD PWB (DMO- 62K11290 W/OSG) 809E27890 Spring 12C2 Screw 12C3 160K77220 CCD PWB 1110 130K62930 IIT Size Detect Sensor (DMO-W/OSG) 03/02 5.2 Parts List WorkCentre Pro 423/428 5-19 CHAPTER 5 PARTS LIST...
  • Page 350 WorkCentre Pro 423/428 5-20 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 3.3 Carriage Motor and Carriage Cable Capstan Shaft 12D1 Pulley 12D2 12K94190 Front Carriage Cable 12D3 12K94200 Rear Carriage Cable 12D4 809E34730...
  • Page 351 Half Rate Carriage 10BE Holder 10BF 20E99590 Pulley 10BG 3E55810 Stopper 10BH Screw 10BJ 63E92581 Tape (Half Rate) 10BK 63E92571 Tape (Full Rate) 10BL Front Rail 10BM Rear Rail 10BN 03/02 5.2 Parts List WorkCentre Pro 423/428 5-21 CHAPTER 5 PARTS LIST...
  • Page 352 WorkCentre Pro 423/428 5-22 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 3.5 Platen Cover 802K26013 Platen Cover (Items 2-4) 2001 Platen Cover 20B2 36K91511 Counter Balance 2005 Screw 20B3 4E12330 Platen Cushion 2003...
  • Page 353 162K63731 INV Wire Harness 75B3 160K75831 Base 10Key 7512 162K63740 One Touch Wire Harness 75B4 Display 75B5 802E25061 Panel 32B2 802E24240 Cover 32B3 Screw 32B4 830E92720 Panel-Hook 32B5 03/02 5.2 Parts List WorkCentre Pro 423/428 5-23 CHAPTER 5 PARTS LIST...
  • Page 354 WorkCentre Pro 423/428 5-24 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List PL 3.7 Touch Panel, Handset ITEM PART No. DESCRIPTION A.C. Top Cover 32B1 Case Assembly 32C6 802K26791 One Touch Panel (FX) 75C1 802K32610 One Touch Panel (FXA)(DMO) 75C1...
  • Page 355 ITEM PART No. DESCRIPTION A.C. PL 4 ROS 62K10901 1310 PL 4.1 ROS 62K11080 ROS (DMO) 1310 162K65102 Wire Harness 13B1 802E27131 ROS Cover 13B2 03/02 5.2 Parts List WorkCentre Pro 423/428 5-25 CHAPTER 5 PARTS LIST...
  • Page 356 WorkCentre Pro 423/428 5-26 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 5 XERO/DEVE 4510 PL 5.1 XERO/DEVE (1/2) 1K74274 CRU Frame Assembly (Items3-7) 44B1 CRU Frame 44B2 802E24882 Cover 44B3 15E74801 Bias Plate...
  • Page 357 Main Fan 3301 55E19870 Guard 33C1 54E18983 Duct 33C2 12K94251 Link Assembly (Items 5, 6) 33C3 Link 33C4 Spring 33C5 12E10221 Link 33C6 32E16441 Guide 33C7 Screw 33C8 03/02 5.2 Parts List WorkCentre Pro 423/428 5-27 CHAPTER 5 PARTS LIST...
  • Page 358 WorkCentre Pro 423/428 5-28 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 6 Fuser 126K14250 Fuser Assembly (Items 2-26)(PL 6.2)(100V)(FX) 43AA PL 6.1 Fuser Assembly (1/2) Fuser Assembly (Items 2-26)(PL 6.2)(220V)(FXA, 126K14271 43AA FXK, DMO) 126K14261 Fuser Assembly (Items 2-26)(PL 6.2)(110V)(TFX)
  • Page 359 Heat Roller 4318 130K59680 Fuser Thermistor 4314 130K60380 Fuser Thermostat (Rear) 4315 130K62390 Fuser Thermostat (Front) 43CB Plate 43CC 962K5860 Wire Harness (FX,TFX) 43CD 962K5870 Wire Harness (FXA,FXK,DMO) 43CD 03/02 5.2 Parts List WorkCentre Pro 423/428 5-29 CHAPTER 5 PARTS LIST...
  • Page 360 WorkCentre Pro 423/428 5-30 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 7 Electrical Electrical Cover 73B1 PL 7.1 IOT Electrical (1/2) 105K19235 Circuit Breaker Assembly 73B2 104E93960 Choke Coil 73B3 105E10405 Power Unit (FX,TFX,DMO)(100V)
  • Page 361 72B1 537K62310 MSU DIMM (DMO-W) 962K4210 Wire Harness(DC16) 71C6 Spacer(Option) 71C7 162K21521 Wire Harness(Option) 71C8 962K5771 Wire Harness(Option) 71C9 Core(Option) 71CB 121K24653 HDD(Option) 7811 160K76701 HDC PWB(Option) 72B1 03/02 5.2 Parts List WorkCentre Pro 423/428 5-31 CHAPTER 5 PARTS LIST...
  • Page 362 WorkCentre Pro 423/428 5-32 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 7.3 MF Box (1/2) MF Box Frame 31E1 160K84572 MF Main PWB 72E1 537K60410 MF System ROM(FX) 72E2 537K61151 MF System ROM(FXA)
  • Page 363 Damper (Option) 78B4 Screw (Option) 78B5 162K64250 Wire Harness 71G2 Spacer (Option) 78B6 Screw (Option) 78B7 160K70270 HD I/F PWB (Option) 72E1 160K76401 HDD Assembly (Items 7-14) 78B1 03/02 5.2 Parts List WorkCentre Pro 423/428 5-33 CHAPTER 5 PARTS LIST...
  • Page 364 WorkCentre Pro 423/428 5-34 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 7.5 ESS Box 962K3390 Cable(ESS-MF) 71H1 ESS Box Frame 31F1 Cover 31F2 ROM Cover 31F3 Screw 31F4 Slot Cover 31F5 Plate 31F6...
  • Page 365 537K61481 I/FAX ROM(FXA,FXK,TFX,PRC)(Option) 76C4 537K62271 I/FAX ROM(DMO-E)(Option) 76C4 537K62280 I/FAX ROM(DMO-W/OSG)(Option) 76C4 133K21100 RAM(64MB)(Option) 7640 160K69860 Token Ring(Option) 76C5 160K48020 Mother PWB 76C6 Bracket 76C7 PWB Guard 76C8 03/02 5.2 Parts List WorkCentre Pro 423/428 5-35 CHAPTER 5 PARTS LIST...
  • Page 366 WorkCentre Pro 423/428 5-36 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 8 Cover 802E26104 Top Cover 32E1 PL 8.1 Cover-Top, Control Panel 802E28101 Stopper 32E2 802E27341 Top Rail Cover 32E3 802E27365 IIT Front Cover...
  • Page 367 Plate Badge WCP423(DMO) 32F9 892E50620 Plate Badge WCP428(DMO) 32F9 892E49400 Plate Badge DC235(AP) 32F9 892E49570 Plate Badge DC285(AP) 32F9 892E42660 Badge-X 32FA 892E50610 Badge-X(DMO) 32FA 830E80971 Bracket-ESS 32FB 03/02 5.2 Parts List WorkCentre Pro 423/428 5-37 CHAPTER 5 PARTS LIST...
  • Page 368 WorkCentre Pro 423/428 5-38 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 8.3 Cover-Rear/Right 802E27155 Rear Cover 32G1 802E28143 Right Inner Cover 32G2 802E27406 IIT Right Cover 32G3 802E28123 Inner Cover 32G4 26P63574 Screw...
  • Page 369 Tray 3 Feed Clutch 50GE 121K24410 Tray 4 Feed Clutch 50GF Bracket 50GG Bracket 50GH Bearing 50GJ 160K75942 Cabinet Drive PWB 50GK 162K63983 Wire Harness 71J1 162K64001 Wire Harness 71J2 03/02 5.2 Parts List WorkCentre Pro 423/428 5-39 CHAPTER 5 PARTS LIST...
  • Page 370 WorkCentre Pro 423/428 5-40 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 9.2 T/A Roller 54E14861 Upper Chute 50H1 54E18652 Lower Chute 50H2 22K62430 T/A 2 Roller 50H3 22K62630 T/A 3,4 Roller 50H4 Bearing...
  • Page 371 Sensor Actuator 50JC 130E82740 Tray 2 No Paper Sensor 50JD 130E82740 Tray 3 No Paper Sensor 50JE 130E82740 Tray 4 No Paper Sensor 50JF 162K63991 Wire Harness 71K1 03/02 5.2 Parts List WorkCentre Pro 423/428 5-41 CHAPTER 5 PARTS LIST...
  • Page 372 WorkCentre Pro 423/428 5-42 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 9.4 Right Cover Assembly 68K20793 Pinch Bracket Assembly (Items 2-10) 50K1 Bracket 50K2 59K19520 Pinch Roller 50K3 Spring 50K4 13E20620 Bearing 50K5...
  • Page 373 NCU-C PWB (FXA) 72G9 160K82640 NCU-C PWB (TFX) 72G9 160K82650 NCU-C PWB (FXK) 72G9 160K83840 NCU-C PWB (PRC) 72G9 177K94030 Data Cable 71L5 Screw 31J6 9E68410 Earth Spring 31J7 03/02 5.2 Parts List WorkCentre Pro 423/428 5-43 CHAPTER 5 PARTS LIST...
  • Page 374 WorkCentre Pro 423/428 5-44 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 9.6 Tray 2/3/4 Assembly 50K43655 Tray 2/3/4 Assembly (PL 9.7-PL9.9)(FX) 50L1 50K46901 Tray 2/3/4 Assembly (PL 9.7-PL9.9)(AP) 50L1 50K46564 Tray 2/3/4 Assembly (PL 9.7-PL9.9)(DMO-E)
  • Page 375 19K97497 Retard Holder Assembly (Items 13-18) 50MC Retard Housing 50MD 59K21960 Retard Roller 5043 Shaft 50ME 5K6110 Friction Clutch 50MF Retard Holder 50MG 809E29570 Spring 50MH Bearing 50MJ 03/02 5.2 Parts List WorkCentre Pro 423/428 5-45 CHAPTER 5 PARTS LIST...
  • Page 376 WorkCentre Pro 423/428 5-46 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 9.8 Tray (2/3) Housing 50N1 Label (Instruction) 50N2 Label (End Guide) 50N3 38E24751 End Guide 50N4 38E24280 Plate End Guide 50N5 38E24300...
  • Page 377 50PB 50PC 11E10953 Lever 50PD Label (Max) 50PE Label (OHP MAX) 50PF 809E19062 Spring 50PG 809E18760 Spring 50PH Label (Size) 50PJ 809E36360 Spring 50PK Latch 50PL Screw 50PM 03/02 5.2 Parts List WorkCentre Pro 423/428 5-47 CHAPTER 5 PARTS LIST...
  • Page 378 WorkCentre Pro 423/428 5-48 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 9.10 Cover 802E26281 Left Cover 50Q1 802E26304 Bottom Cover 50Q2 802E26293 Right Cover 50Q3 802E26313 Rear Cover 50Q4 110E10620 Cabinet Interlock Switch...
  • Page 379 DADF Assembly (PL 10.2-PL 10.9)(AP) 22AA 22K63120 DADF Assembly (PL10.2-PL10.9)(DMO-E) 22AA 22K63130 DADF Assembly (PL10.2-PL10.9)(DMO-W) 22AA 3K91881 Knob 22B4 15E47381 Set Plate 22B5 117E94781 Cable (DADF-IIT) 22B6 90K92920 DADF Platen Cushion 22B7 03/02 5.2 Parts List WorkCentre Pro 423/428 5-49 CHAPTER 5 PARTS LIST...
  • Page 380 WorkCentre Pro 423/428 5-50 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 10.2 DADF Feeder Assembly DADF Feeder Assembly (PL 10.4-PL 10.8) 2240 50K44800 DADF Document Tray 2210 50K47970 DADF Document Tray (DMO-W/OSG) 19E52950...
  • Page 381 Connector Cover 22DH 962K7980 Wire Harness 22DJ 121K12390 Stamp Solenoid 22DK 11E12320 Link 22DL 59K22580 Read Roller Assembly (Items 16,17) 22DM 59K21660 Exit Roller Assembly (Items 11,12) 22DN 03/02 5.2 Parts List WorkCentre Pro 423/428 5-51 CHAPTER 5 PARTS LIST...
  • Page 382 WorkCentre Pro 423/428 5-52 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 10.4 Top Cover Assembly (1/2) Top Cover Assembly (PL 10.5) 2220 19E52940 F-Feed Holder 22E1 38K86062 Chute 22E2 32E17920 Reverse Registration Mylar...
  • Page 383 7E72970 Gear 22FJ 120E21080 Feed Actuator 22FK 809E35440 Plate Spring 22FL 59E97120 Registration-L Roller 22FM 59E97110 Registration-R Roller 22FN Shaft 22FP 59K21690 Feed/Pickup Roller Assembly (Items 5-12) 22FQ 03/02 5.2 Parts List WorkCentre Pro 423/428 5-53 CHAPTER 5 PARTS LIST...
  • Page 384 WorkCentre Pro 423/428 5-54 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 10.6 Chute, Regi Roller 32K3651 Platen Guide Assembly 22G1 120K91900 Registration Actuator 22G2 120K91910 Exit Actuator 22G3 6K22030 Registration Roller 2226 Bearing...
  • Page 385 Read 2 Roller 22H5 13E20350 Bearing 22H6 20K9990 Pulley 22H7 20E35490 Pulley 22H8 20E35490 Pulley 22H9 Drive Gear 7E72950 22HB 7E72940 Drive Gear 22HC 7E72930 Drive Gear 22HD Bush 22HE 03/02 5.2 Parts List WorkCentre Pro 423/428 5-55 CHAPTER 5 PARTS LIST...
  • Page 386 WorkCentre Pro 423/428 5-56 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 10.8 DADF Feed/Drive Motor 127K33650 DADF Feed In/Registration Motor 2291 127K33660 DADF Read/Exit Motor 2293 809E35420 Spring 22J1 Side Frame 22J2 23E20510...
  • Page 387 Tray Under Cover (DMO-W/OSG) 802K34180 Tray Clear Cover 22K7 802K45470 Tray Clear Cover (DMO-W/OSG) 962K9080 Wire Harness 22K8 962K9070 Wire Harness (DMO-W/OSG) 50K44800 Tray Assembly (Items 1-8) 22K9 892E58650 Label 22KB 03/02 5.2 Parts List WorkCentre Pro 423/428 5-57 CHAPTER 5 PARTS LIST...
  • Page 388 WorkCentre Pro 423/428 5-58 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 10.10 Document Tray (DMO-W/OSG) 50K47970 Tray Assembly (Items 2-10) 22K9 50K47980 Document Tray 22K1 38E24860 Side Guide 22K2 130E84140 Document Sensor 22K4...
  • Page 389 MSI Assembly (PL 11.2-PL 11.4) (FXAP) 51AA 59K22504 MSI Assembly (PL 11.2-PL 11.4) (DMO) 51AA 59K22788 MSI Assembly (PL 11.2-PL 11.4) (PRC) 51AA 802E28281 Cover Rear 51B1 4E8050 Oil Damper 51B2 03/02 5.2 Parts List WorkCentre Pro 423/428 5-59 CHAPTER 5 PARTS LIST...
  • Page 390 WorkCentre Pro 423/428 5-60 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 11.2 MSI Tray 802E28262 Cover Front 51C1 19E49791 Holder MSI 51C2 Tray MSI 51C3 50E17370 Tray END 51C4 809E7490 Spring COMP 51C5 51C6 Frame MSI (PL 11.3)
  • Page 391 Front Rack 51DD Rear Rack 51DE Gear 51DF 130K62041 MSI Size Sensor 51DG Plate 51DH Link 51DJ Spring 51DK 809E33420 Spring 51DL Lower Base Tray (PL 11.4) 51DM 03/02 5.2 Parts List WorkCentre Pro 423/428 5-61 CHAPTER 5 PARTS LIST...
  • Page 392 WorkCentre Pro 423/428 5-62 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 11.4 Feed/Retard Roller 121K26211 MSI Feed Solenoid 5136 830E80792 Bracket 51E1 7E71421 Gear 51E2 7E71411 Gear 51E3 15E76121 Earth Plate 51E4 809E15351...
  • Page 393 Pinch Roller 52BH 6E76000 Shaft 52BJ 809E20322 Spring 52BK 127K24041 Duplex Motor 5251 802E28362 Holder 52BL 809E33430 Spring 52BM 802E28352 Cover 52BN 19K97623 Cover 52BP 32E18020 Guide 52BQ 03/02 5.2 Parts List WorkCentre Pro 423/428 5-63 CHAPTER 5 PARTS LIST...
  • Page 394 WorkCentre Pro 423/428 5-64 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 13 Finisher Finisher Assembly (PL 13.2-PL 13.19) 62AA PL 13.1 Finisher Assembly Base Frame 62B1 Slide Frame 62B2 1E61740 Slide Rail 62B3...
  • Page 395 62C6 11E12190 Actuator 62C7 110E10970 Exit Unit Switch 62C8 962K4640 Switch Wire Harness 62C9 962K4550 TCS Wire Harness 62CB 962K4720 STH Wire Harness 62CC 962K4730 Earth Wire 62CD 03/02 5.2 Parts List WorkCentre Pro 423/428 5-65 CHAPTER 5 PARTS LIST...
  • Page 396 WorkCentre Pro 423/428 5-66 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 13.3 Stapler Assembly, Base Cover 1E61730 Front Frame 62E1 1E61720 Base Frame 62E2 19E50620 Staple Holder Cover 62E3 11E12040 Actuator 62E4 809E35090...
  • Page 397 62F8 12E10270 Link 62F9 11E12070 Crank Lever 62FB Bracket 62FC Plate 62FD 130E85360 Docking Sensor 62FE 7E72440 Gear 62FF 7E72450 62FG 12K5530 Staple Crank Assembly (Items 10-15) 62FH 03/02 5.2 Parts List WorkCentre Pro 423/428 5-67 CHAPTER 5 PARTS LIST...
  • Page 398 WorkCentre Pro 423/428 5-68 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 13.5 Reverse/Feed Motor 127E83050 Reverse Motor 62G1 Bracket 62G2 Bearing 62G3 962K4710 AC Wire Harness 62G4 23E20250 Reverse Motor Belt 62G5 22E88020...
  • Page 399 121E88650 Paddle Solenoid 62H9 Spring 809E35160 62HB 7E72540 Paddle Gear 62HC 19E50730 Holder 62HD Bearing 62HE 16E93250 Bush 62HF Bearing 62HG 22K63080 Exit Roller Assembly 62HH Bearing 62HJ 03/02 5.2 Parts List WorkCentre Pro 423/428 5-69 CHAPTER 5 PARTS LIST...
  • Page 400 WorkCentre Pro 423/428 5-70 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 13.7 Transfer Motor, C Paper Guide 127E83040 Transfer Motor 6271 23E20240 Belt 62K1 22E88020 Tension Pulley 62K2 19E50770 Bracket 62K3 809E35070 Spring...
  • Page 401 62L8 22E88030 Pinch Roller 62L9 Pinch Roller 22E26300 62LB 62LC 962K4570 TMS Wire Harness 62LD Top Cover Assembly (Items 1-12) 62LE 38K86380 FT Guide Assembly (Items 2-10) 62LF 03/02 5.2 Parts List WorkCentre Pro 423/428 5-71 CHAPTER 5 PARTS LIST...
  • Page 402 WorkCentre Pro 423/428 5-72 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 13.9 L/H Upper Cover 38K86360 L/H Upper Cover 62M1 3E56820 Handle 62M2 11E12010 L/H Lower Cover Guide 62M3 22E88000 Pinch Roller 62M4...
  • Page 403 62NG 20E35430 Pulley 62NH Belt 62NJ 13E20390 Bearing 62NK 15E77630 Plate Spring 62NL Spring 809E35130 62NM 16E93240 Guide Pin 62NN 38K86370 TH Guide Assembly(Items 1-13,17,23) 62NP Paddle 62NQ 03/02 5.2 Parts List WorkCentre Pro 423/428 5-73 CHAPTER 5 PARTS LIST...
  • Page 404 WorkCentre Pro 423/428 5-74 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 13.11 L/H Lower Cover 32E17590 L/H Lower Chute 62P1 802K42850 L/H Lower Cover 62P2 11E12010 L/H Lower Cover Guide 62P3 809E35000 Pinch Roller Spring...
  • Page 405 3E56810 Stopper 62RE Shaft 62RF 16E93240 62RG 962K4580 AHPS Wire Harness 62RH 962K4660 A-MOT Wire Harness 62RJ 962K4680 Earth Wire 62RK 38K86400 F-Flap Guide Assembly (Items 10,12) 62RL 03/02 5.2 Parts List WorkCentre Pro 423/428 5-75 CHAPTER 5 PARTS LIST...
  • Page 406 WorkCentre Pro 423/428 5-76 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ,7(0 3$57 1R '(6&5,37,21 $& PL 13.13 R/H Cover 38K86410 R/H Cover 62T1 121K28700 Lever Solenoid 62T2 Screw 62T3 130E85360 Stack Height Sensor 62T4 130E85360 Lever Sensor 62T5...
  • Page 407 22K63040 In-Roller Assembly 62V6 22K63060 Lower Transport Roller Assembly 62V7 22K63070 Upper Transport Roller Assembly 62V8 7E72460 Gear (One Way) 62V9 Bearing 62VB 19E50640 Holder 62VC Bearing 62VD 03/02 5.2 Parts List WorkCentre Pro 423/428 5-77 CHAPTER 5 PARTS LIST...
  • Page 408 WorkCentre Pro 423/428 5-78 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 13.15 Upper Paper Guide 32E17580 Upper Paper Guide 62W1 11E12080 Side Tray Paper Weight 62W2 6E75370 Shaft 62W3 19E50570 Holder 62W4 809E35060...
  • Page 409 62Q1 962K4700 Power Cable 62Q2 160K83580 Finisher Control PWB 6261 Bracket 62Q3 PWB Support 62Q4 Cable Cover 62Q5 962K4670 MOT Wire Harness 62Q6 962K4690 I/F Wire Harness 62Q7 03/02 5.2 Parts List WorkCentre Pro 423/428 5-79 CHAPTER 5 PARTS LIST...
  • Page 410 WorkCentre Pro 423/428 5-80 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 13.17 Front/Rear Cover, Switch PWB 802K42870 Front Cover(FX) 802K42880 Front Cover(AP) 62X1 802E31240 Front Cover(DMO-E/DMO-W/OSG) 802K42890 Front Door Cover 62X2 160K83590 Pause Switch...
  • Page 411 Rear Cover 62YD Gear 62YE Gear 62YF Gear 62YG Housing 62YH Stopper 62YJ Guide 62YK Harness Cover 62YL Gear Cover 62YM Finisher Receiving Tray Assembly (Items 1- 604K4680 62YN 03/02 5.2 Parts List WorkCentre Pro 423/428 5-81 CHAPTER 5 PARTS LIST...
  • Page 412 WorkCentre Pro 423/428 5-82 CHAPTER 5 PARTS LIST 03/02 5.2 Parts List ITEM PART No. DESCRIPTION A.C. PL 13.19 Finisher Side Tray 50E17620 Finisher Side Tray 62A1 50E17640 Link U Guide 62A2 802E31330 Guide 62A3...
  • Page 413 ITEM PART No. DESCRIPTION A.C. PL 14.1 Consumables and Special Tools 499T247 A3 Test Pattern 499T281 A4 Fax Test Pattern 70E90000 Lubricant 03/02 5.2 Parts List WorkCentre Pro 423/428 5-83 CHAPTER 5 PARTS LIST...
  • Page 414 WorkCentre Pro 423/428 5-84 CHAPTER 5 PARTS LIST 03/02 5.3 Common Hardware Common Hardware ITEM PART NO. DESCRIPTION ITEM PART NO. DESCRIPTION 112W 27851 SCREW SEMS (M3X8) 354W 24251 E-CLIP (4) 112W 28251 SCREW SEMS (M3X12) 354W 24254 KL-CLIP (4)
  • Page 415 03/02 5.2 Parts List WorkCentre Pro 423/428 5-85 CHAPTER 5 PARTS LIST...
  • Page 416 CHAPTER 6 GENERAL...
  • Page 418 6.8.2 How to By-pass the IOT Password Protection........29 6.8.3 Location of Serial Number Plate ............29 6.8.4 How to Read Emergency History ............30 6.8.5 Copy features list ..................31 6.8.6 Fax features list ..................31 03/02 Contents WorkCentre Pro 423/428 CHAPTER 6 GENERAL...
  • Page 419 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6.1 Specifications 6.1 Specifications 6.1.1 Product Name/Prod. Code/Model Code/Serial No. Product Name Prod. Code WorkCentre Pro 423 WorkCentre Pro 423i WorkCentre Pro 423Pi WorkCentre Pro 428 WorkCentre Pro 428i WorkCentre Pro 428Pi DMO 110V Product Name Prod.
  • Page 420 *2 Up to the top face of the Platen Document Cover *3 MSI Tray folded *4 Up to the top face of the DADF document cover *5 Up to the DADF Top Document Input Tray (Figure-1) j0hn6101 03/02 Contents WorkCentre Pro 423/428 CHAPTER 6 GENERAL...
  • Page 421 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6.1 Specifications 1. DADF equipped model (Figure-2) (with DADF, Duplex, MSI, OCT) b. Machine Weight Product name Weight(kg) Remarks WorkCentre Pro 423/428 95.6 or less IOT+IIT+2Tray Cabinet WorkCentre Pro 106.9 or less IOT+IIT+2Tray Cabinet+DADF+MSI+Duplex+OCT...
  • Page 422 Simplex - 18/22 19/19 Disabled at Text/Photo and Photo modes Duplex Envelope (Long 3) Simplex - 18/22 19/19 Duplex *1 For DC28, copy speed is lowered to 17sheet/min from the 21 sheet. 03/02 Contents WorkCentre Pro 423/428 CHAPTER 6 GENERAL...
  • Page 423 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6.1 Specifications 6. Copy quality adjustment 9. Image loss (1) Text mode (2) Photo mode (3) Text/Photo mode Magnification Lead edge Side edges Trail edge 100% mag./Red. Within 4.0mm * Within 4.0mm * Within 4.0mm * 7.
  • Page 424 2) MMR (Selected in the order 3) 300x300 3) 16x15.4 3) G3 3) MR of priority indicated 4) 8x15.4 4) 300x300 4) G4 4) MH right based 5) 8x15.4 on the capability) 03/02 Contents WorkCentre Pro 423/428 CHAPTER 6 GENERAL...
  • Page 425 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6.1 Specifications 6.1.5 Direct FAX Specification/Functions Chart Mode Transmission time (Tp) Note when Fax and Printer functions installed at the same time 9600BPS 14.4KBPS 28.8KBPS 33.6KBPS Specifications Image electronic Super fine Within Within...
  • Page 426 Centro: Compatible, Nibble, ECP Ethernet: TCP/IP, NetWare, EtherTalk, SMB, DHCP, IPP, HTTP Windows95/98/Me, Windows 2000, Windows NT4.0, MacOS (only for PostScript) *1 Only for Windows2000 *2 Ethernet doesn’t operate when connected to TokenRing. 03/02 Contents WorkCentre Pro 423/428 CHAPTER 6 GENERAL...
  • Page 427 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-10 6.1 Specifications 6.1.7 System feature – Memory 6.1.8 Electrical feature 1. Memory for Fax 1. Operational power supply This machine has a standard memory of 2MB embedded. Additional 8MB memory and Single phase 2 wire line 1GB HDD (10MB memory is necessary) are optionally available.
  • Page 428 If the Start button is pressed with the Platen Cover open, the document will be scanned immediately after the button is pressed. However, when the document loaded has black edges, improper sensing or no sensing may result. 03/02 Contents WorkCentre Pro 423/428 6-11 CHAPTER 6 GENERAL...
  • Page 429 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-12 6.1 Specifications <2-sided> A4(LEF): 8.5sheets/min, A4(SEF): 6.8sheets/min, Document size Fast scan direction Slow scan direction B4: 5.9sheets/min, A3: 5.3sheets/min (mm) (Size Detect Sensor) *2-sided->1-sided mode / 2-sided ->2-sided mode(Sorting mode) No document...
  • Page 430 Impulse to standby to the main to main to full full system processor process system Surface noise 25.4/34 46/50.7 59/59 52.1/56.5 65/65 pressure level Acoustic power 40/50 63/68 60.6/61. 69.9/71.8 63.7/64.6 level 03/02 Contents WorkCentre Pro 423/428 6-13 CHAPTER 6 GENERAL...
  • Page 431 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-14 6.3 Consumables size Ref. Acoustic power level: Scanning density <Fast scan> 600/400/300/200dpi, 16/12/8lines/mm The existing sound pressure level used for measuring the noise level is the <Slow scan> 600/400/300/200/100dpi, mean sound level of a part of noise variance by time, whereas the acoustic 15.4/11.55/7.7/3.85lines/mm...
  • Page 432 Indicates that the specific part is illustrated as it appears before it has been modified by the change identified by the number within the circle. 6.4.2 Modification List V code Title and description Product code Remarks 03/02 Contents WorkCentre Pro 423/428 6-15 CHAPTER 6 GENERAL...
  • Page 433 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-16 6.5 Installation V code Title and description Product code Remarks V code Title and description Product code Remarks...
  • Page 434 Note IOT and IIT should be installed by a service engineer. Note This procedure below is based on WorkCentre Pro 423/428. Procedures for other models, which are different from WorkCentre Pro 423/428 are also included here. Unpacking and Assembling l Accessories for 2-Tray Module (Figure-2) Note Unpack 2-Tray Module, IOT, then IIT.
  • Page 435 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-18 6.5 Installation l Remove tapes and packaging materials. l Accessories for IOT (Figure-3) 3. Lock the 2-Tray Module casters and place the IOT. (Figure-5)  Main Unit WARNING  Power Cord  Line Cable The weight of the IOT assembly is 46 kg (101 lb).
  • Page 436 2) Connect the connector. (The light blue end should be on the right side.) Note Make sure that the connector is connected securely. A contact failure will cause a paper detection error at Trays 2 to 4. 03/02 Contents WorkCentre Pro 423/428 6-19 CHAPTER 6 GENERAL...
  • Page 437 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-20 6.5 Installation 9. Connect the IIT to IOT using cable. (Figure-9) 11. Connect the line. (Fax equipped models only) (Figure-11) 1) Connect ”LINE1” of the IOT Rear Cover with the line cable and another with the line rosette.
  • Page 438 3) Pull off the toner seal. (Pull it off when the CRU handle is latched.) l Set up the size label of the tray based on the paper loaded. (Figure-16) j0hn6516 (Figure-14) john6514 03/02 Contents WorkCentre Pro 423/428 6-21 CHAPTER 6 GENERAL...
  • Page 439 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-22 6.5 Installation Turn the power on. Storage and setup 18. Plug in the power cord in the main processor. 21. Custom presets for communication feature 19. Plug in the power cord. The power source must be used exclusively for the WCP423/428.
  • Page 440 -> Options Report -> Dial Directory Report 28. Other checking Noise or odor is not sensed during operation. The copy meter is operating normally, and counts up the number. (Figure-19) j0hn6519 03/02 Contents WorkCentre Pro 423/428 6-23 CHAPTER 6 GENERAL...
  • Page 441 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-24 6.7 Custom Presets 6.6 Removal 13. Packing of the Main Processor unit is performed by the service engineer (Figure-1). l The machine is removed basically by the service engineer, excluding field arrangement.
  • Page 442 9 to 30 sec. Preset magnification 4 values Changing the preset 1414 magnification value (141.4%) (141.4%) Available between 25% and 400% with 0.1% increment Preset magnification 5 values Changing the preset 1225 03/02 Contents WorkCentre Pro 423/428 6-25 CHAPTER 6 GENERAL...
  • Page 443 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-26 6.7 Custom Presets Custom Presets Chain-Function Code List (DC Area) continued 2(Lower) 2: FAX enable 3: Copy and Fax enable 4: Printer enable Chain Func Item Description Default 5: Copy and Printer enable...
  • Page 444 ISDN integral No. omitting network decimals. 2nd byte should be a decimal integral number. Storing 90 deg rotation on 0: Off 1: Off Fax transmission or delayed 1: On polls. 03/02 Contents WorkCentre Pro 423/428 6-27 CHAPTER 6 GENERAL...
  • Page 445 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-28 6.8 General Information 6.7.2 How to change Custom Presets in User mode Custom Presets Chain-Function Code List (MF Area) continued Chain Func Item Description Default 1. Select “Custom Presets” in menu. Selection to store reduced or 0: To store 100% mag.
  • Page 446 3) After documents are output by polling, the terminal automatically deletes the documents one by one. In case any problem or accident occurs at the remote terminal during this operation, documents may be deleted before being output. Be 03/02 Contents WorkCentre Pro 423/428 6-29 CHAPTER 6 GENERAL...
  • Page 447 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-30 6.8 General Information 6.8.4 How to Read Emergency History Summary When some errors occur with the FAX function, the machine is rebooted automatically to clear errors such as communication failure between the internal modules of the machine. The machine logs the errors that indicate the reason for rebooting.
  • Page 448 *2: for only machine with DADF, Upgrade Kit x 2 Multi poll priority *3: for only machine with Electronic Sort Kit, Auto Duplex Unit Kit, Upgrade Kit x 2 Transmission priority Changing priority for delayed send Store for polling 03/02 Contents WorkCentre Pro 423/428 6-31 CHAPTER 6 GENERAL...
  • Page 449 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-32 6.8 General Information Feature Description Feature Description Duplex send/receive ISDN G3-F network Number of transmissions y (Compatible only with the same models) G4-F network Option Delayed start from memory International Communication mode...
  • Page 450 Setup checking Display of remaining memory capacity Delayed start (Delayed job) FAX/TEL switchover y (RING) Handset Option External telephone connection y (Not an answering machine) Default panel setting Line Monitor Tone transmission 03/02 Contents WorkCentre Pro 423/428 6-33 CHAPTER 6 GENERAL...
  • Page 451 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-34 6.9 Function Flow (Function Tree) 6.9 Function Flow (Function Tree) 1. Copy Menu Reduce / Lighter / Basic Features Paper Supply Enlarge Darker 1.Copy Customized Reduce / Lighter / Paper Supply 2.FAX/iFAX...
  • Page 452 Mailbox List Monitor List Bound Priority Send On-hook Originals Serial Comm Monitor Report Remote Local Recipient Mailbox Mailbox Print Sets Store for Polling Polling IFAX Send F Code IFAX Profile Status 03/02 Contents WorkCentre Pro 423/428 6-35 CHAPTER 6 GENERAL...
  • Page 453 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-36 6.9 Function Flow (Function Tree) 5. Custom Presets 5-2 Copy Screen 1. Customized 1 2. Customized 2 3. Customized 3 Screen Copy Screen Fax Screen Paper Tray Reduce / Enlarge Lighter / Darker Defaults 4.
  • Page 454 Auto Delete Off 52. Net Modulo 53. No Comm. Monitor 54. Trace Layer 10. Stamp 11. Long Document 12. Rotate 90ƒ Modulo 8 Session 600mm 55. Trace Channel 56. Session Window First 03/02 Contents WorkCentre Pro 423/428 6-37 CHAPTER 6 GENERAL...
  • Page 455 WorkCentre Pro 423/428 03/02 CHAPTER 6 GENERAL 6-38 6.9 Function Flow (Function Tree) 5-7 Date / Timers 5-10 Scan Screen 1. Date 3. Auto Clear 1. Customized 1 2. Customized 2 3. Customized 3 2. Clock (D / M / Y) 1min.
  • Page 456 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS...
  • Page 458 7.2.16 MCUSW PWB..................13 7.2.17 Cabinet(No Paper Sensor/Low Paper Sensor) ........14 7.2.18 Cabinet(Interlock Switch/Tray 3 T/A Sensor) ......... 14 7.2.19 Cabinet Rear..................15 7.2.20 Option Box ..................... 15 03/02 7.1 Plug/Jack Information WorkCentre Pro 423/428 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS...
  • Page 459: Plug/jack Information

    WorkCentre Pro 423/428 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS 03/02 7.1 Plug/Jack Information Plug/Jack Information 7.1.2 Plug/Jack Index P/J No. Fig. No. Item No. Remarks (destination) 7.1.1 How to Use Plug/Jack Information 7.2.12 Power Unit • To know the connector location, see the Fig. No. and Item No. listed in Section 7.1.2,”...
  • Page 460 P370 7.2.13 7.2.14 P390 7.2.1 Control Panel 7.2.13 J390 7.2.2 7.2.13 MF Box 7.2.1 7.2.14 7.2.1 7.2.13 7.2.1 7.2.13 7.2.1 7.2.13 7.2.1 7.2.13 7.2.1 7.2.13 MF Box 7.2.16 03/02 7.1 Plug/Jack Information WorkCentre Pro 423/428 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS...
  • Page 461 WorkCentre Pro 423/428 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS 03/02 7.1 Plug/Jack Information P/J No. Fig. No. Item No. Remarks (destination) P/J No. Fig. No. Item No. Remarks (destination) 7.2.16 7.2.14 7.2.16 J606 7.2.7 7.2.16 P606 7.2.5 7.2.16 J611 7.2.9 7.2.4 P611 7.2.5...
  • Page 462 Stapler Unit HP Sensor 7.2.23 Stepler Unit 7.2.23 Tamper HP Sensor 7.2.23 Timing Sensor 7.2.25 Top Cover Open Sensor 7.2.23 Tray Elevator Motor 7.2.24 Upper Limit Sensor 7.2.24 03/02 7.1 Plug/Jack Information WorkCentre Pro 423/428 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS...
  • Page 463: Plug/jack Location Diagrams

    WorkCentre Pro 423/428 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS 03/02 7.2 Plug/Jack Location Diagrams Plug/Jack Location Diagrams 7.2.2 IIT 7.2.1 Control Panel (Figure-2) j0hn7002 (Figure-1) j0hn7001...
  • Page 464: Hvps/printer Panel

    7.2.3 HVPS/Printer Panel 7.2.4 ROS (Figure-3) j0hn7003 (Figure-4) j0hn7004 03/02 7.2 Plug/Jack Location Diagrams WorkCentre Pro 423/428 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS...
  • Page 465: Iot Right Location

    WorkCentre Pro 423/428 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS 03/02 7.2 Plug/Jack Location Diagrams 7.2.5 IOT Right Location 7.2.6 T/A Chute Assembly (Figure-5) j0hn7005 (Figure-6) j0hn7006...
  • Page 466: Fuser/cru

    7.2.7 Fuser/CRU 7.2.8 Tray 1No Paper Sensor/Low Paper Sensor (Figure-7) j0hn7007 (Figure-8) j0hn7008 03/02 7.2 Plug/Jack Location Diagrams WorkCentre Pro 423/428 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS...
  • Page 467: Rh Unit 1

    WorkCentre Pro 423/428 7-10 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS 03/02 7.2 Plug/Jack Location Diagrams 7.2.9 RH Unit 1 7.2.10 RH Unit 2 (Figure-9) j0hn7009 (Figure-10) j0hn7010...
  • Page 468: Msi

    7.2.11 MSI 7.2.12 Power Unit (Figure-11) j0hn7011 (Figure-12) j0hn7012 03/02 7.2 Plug/Jack Location Diagrams WorkCentre Pro 423/428 7-11 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS...
  • Page 469: Mf Box

    WorkCentre Pro 423/428 7-12 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS 03/02 7.2 Plug/Jack Location Diagrams 7.2.13 MF Box 7.2.14 ESS (Figure-14) j0hn7014 (Figure-13) j0hn7013...
  • Page 470: Iot Rear Location

    7.2.15 IOT Rear Location 7.2.16 MCUSW PWB (Figure-15) j0hn7015 (Figure-16) j0hn7016 03/02 7.2 Plug/Jack Location Diagrams WorkCentre Pro 423/428 7-13 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS...
  • Page 471: Cabinet(no Paper Sensor/low Paper Sensor)

    WorkCentre Pro 423/428 7-14 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS 03/02 7.2 Plug/Jack Location Diagrams 7.2.17 Cabinet(No Paper Sensor/Low Paper Sensor) 7.2.18 Cabinet(Interlock Switch/Tray 3 T/A Sensor) (Figure-17) j0hn7017 (Figure-18) j0hn7018...
  • Page 472: Cabinet Rear

    7.2.19 Cabinet Rear 7.2.20 Option Box (Figure-19) j0hn7019 (Figure-20) j0hn7020 03/02 7.2 Plug/Jack Location Diagrams WorkCentre Pro 423/428 7-15 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS...
  • Page 473: Dadf 1

    WorkCentre Pro 423/428 7-16 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS 03/02 7.2 Plug/Jack Location Diagrams 7.2.21 DADF 1 7.2.22 DADF 2 (Figure-22) j0hn7022 (Figure-21) j0hn7021...
  • Page 474: Finisher Front

    7.2.23 Finisher Front 7.2.24 Finisher(TM Guide) (Figure-24) j0hn7024 (Figure-23) j0hn7023 03/02 7.2 Plug/Jack Location Diagrams WorkCentre Pro 423/428 7-17 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS...
  • Page 475 WorkCentre Pro 423/428 7-18 CHAPTER 7 ELECTRICAL WIRING DIAGRAMS 03/02 7.2 Plug/Jack Location Diagrams 7.2.25 Finisher Rear 1 7.2.26 Finisher Rear 2 (Figure-26) j0hn7026 (Figure-25) j0hn7025...
  • Page 476 CHAPTER 8 ACCESSORIES...
  • Page 478 8.22 Stamp Kit (Red) ................56 8.11.1 Product Outline ....................28 8.22.1 Product Outline ....................56 8.11.2 Product Code ....................28 8.22.2 Product Code....................56 8.11.3 Installation Procedure ..................28 8.22.3 Installation Procedure ..................56 03/02 Contents WorkCentre Pro 423/426 CHAPTER 8 ACCESSORIES...
  • Page 479: Additional Tray Kit

    WorkCentre Pro 423/428 CHAPTER 8 ACCESSORIES 03/02 8.1 Additional Tray Kit 8.1 Additional Tray Kit 8.1.1 Product Code Additional Tray Kit: EL200122 (FX) : EL200150 (FXA,FXK,TFX,PRC) : EL200190 (DMO-E) 8.1.2 Installation Procedure 1. Check the accessories. (Figure-1) 1) Tray Unit…………..1 (Figure-2) j0hn8002 5.
  • Page 480 13. Ensure that Tray 4 is displayed on the display of IIT. 14. Check that the machine operates normally. 15. Store the Front Blind Cover removed in Step 4. 03/02 8.1 Additional Tray Kit WorkCentre Pro 423/428 CHAPTER 8 ACCESSORIES...
  • Page 481: Upgrade Kit A(4mb) Fx Only

    WorkCentre Pro 423/428 CHAPTER 8 ACCESSORIES 03/02 8.2 Upgrade Kit A(4MB) FX Only 8.2 Upgrade Kit A(4MB) FX Only - Install the Page Memory PWB on A4MEM-1 of MCU/SW. 8.2.1 Product Outline - When installing two Page Memory PWBs, install the second one to A4MEM-2.
  • Page 482 - If one Page Memory PWB is added, check that the set value is 1. - If two Page Memory PWBs are added, check that the set value is 2. - Check that the set value is 2. 03/02 8.2 Upgrade Kit A(4MB) FX Only WorkCentre Pro 423/428 CHAPTER 8 ACCESSORIES...
  • Page 483: Electronic Sort Kit

    WorkCentre Pro 423/428 CHAPTER 8 ACCESSORIES 03/02 8.3 Electronic Sort Kit 8.3 Electronic Sort Kit CAUTION 8.3.1 Product Outline Electric parts may be damaged by static electricity. Be sure to wear a wrist strap when handling electric parts. If no wrist strap is available, touch a metal section before work to eliminate static This kit enables the electronic sort function.
  • Page 484 6. Connect the Wire Harness and Flat Cable. (Figure-4) 1) Connect the Wire Harness. 2) Attach the Cores (2) to the Flat Cable. 3) Connect the Flat Cable. (Figure-4) j0hn8009 03/02 8.3 Electronic Sort Kit WorkCentre Pro 423/428 CHAPTER 8 ACCESSORIES...
  • Page 485: Offset Output Kit

    WorkCentre Pro 423/428 CHAPTER 8 ACCESSORIES 03/02 8.4 Offset Output Kit 8.4 Offset Output Kit 2. Turn the main unit power off. On printer or Fax-equipped machines, ensure that outstanding jobs have cleared 8.4.1 Product Outline before servicing or interrupting the power to the machine as follows:.
  • Page 486 1) Install the OCT Assembly. 2) Pull out the Rear Upper Rail. 3) Tighten the Screw. 4) Tighten the Screws (2). 5) Tighten the Screws (2). 6) Connect the Connectors (2). 03/02 8.4 Offset Output Kit WorkCentre Pro 423/428 CHAPTER 8 ACCESSORIES...
  • Page 487 WorkCentre Pro 423/428 8-10 CHAPTER 8 ACCESSORIES 03/02 8.4 Offset Output Kit 7. Return the R/H Lower Cover to the original position. 8. Push in the R/H Unit. 9. Install the Holder and Paper Weight. (Figure-5) 1) Install the Holder.
  • Page 488 Connect the Connectors (3) and install the Damper. (Figure-4) 1) Connect the Connectors (3). Remove the Blind Cover. (Figure-2) 2) Install the Damper. 1) Remove the screws (2). 2) Remove the Blind Cover. 03/02 8.5 MSI Kit WorkCentre Pro 423/428 8-11 CHAPTER 8 ACCESSORIES...
  • Page 489 WorkCentre Pro 423/428 8-12 CHAPTER 8 ACCESSORIES 03/02 8.5 MSI Kit 1) Set the Side Guide to the Min. width position. 2) Set Chain/Function “20/5” and press the Start button. 3) Select “Save” and press the Start button. 4) Press the Start button again.
  • Page 490 1. Check the accessories. (Figure-1) 1) Install the Duplex Assembly. 1) Duplex Assembly………… 1 2) Tighten the screw. 2) Label…………………….… 1 3) Connect the Connector. 3) Screw……………………… 1 (Figure-1) j0hn8019 (Figure-2) j0hn8020 03/02 8.6 Duplex Unit Kit WorkCentre Pro 423/428 8-13 CHAPTER 8 ACCESSORIES...
  • Page 491 WorkCentre Pro 423/428 8-14 CHAPTER 8 ACCESSORIES 03/02 8.6 Duplex Unit Kit Install the Label. (Figure-3) (Figure-3) j0hn8021 Push in the R/H Unit. Connect the power cord and turn on the power. Check whether Duplex is installed. 1) Enter C/E Mode.
  • Page 492: Product Code

    8.7.3 Installation Procedure 1. Check the accessories. (Figure-1). 1) Side Tray…………. 1 (Figure-2) j0hn8023 Secure the OCT Cover with the Screws (2) removed in Step 3. (Figure-1) j0hn8022 03/02 8.7 Side Tray Kit WorkCentre Pro 423/428 8-15 CHAPTER 8 ACCESSORIES...
  • Page 493 WorkCentre Pro 423/428 8-16 CHAPTER 8 ACCESSORIES 03/02 8.7 Side Tray Kit Install the Side Tray. (Figure-3) (Figure-3) j0hn8024 Connect the power cord and turn on the power. Perform the setting that the Face Up Tray is installed. 1) Enter C/E Mode.
  • Page 494: Product Code

    4) Clip……………………… 5) Screw(Large)…………... 2 6) Base Frame……………. 7) Finisher……………….… 1 8) Screw(Small)…………... 1 9) Side Tray……………….. 1 10) Finisher Receiving Tray.. 1 11) User Guide………….… 1 (Figure-1) j0hn8066 03/02 8.8 Stapler Finisher WorkCentre Pro 423/428 8-17 CHAPTER 8 ACCESSORIES...
  • Page 495 WorkCentre Pro 423/428 8-18 CHAPTER 8 ACCESSORIES 03/02 8.8 Stapler Finisher 2. Turn the main unit power off. On printer or Fax-equipped machines, ensure that outstanding jobs have cleared 4. Remove the Finisher Blind Covers (4). (Figure-3) before servicing or interrupting the power to the machine as follows:.
  • Page 496 1) Slide the Rail Cover to install. 1) Mount the Finisher by aligning the bottom Studs (4) with the Base Frame holes. 2) Secure the Finisher with the Screw (S) enclosed. (Figure-8) j0hn8072 (Figure-6) j0hn8070 03/02 8.8 Stapler Finisher WorkCentre Pro 423/428 8-19 CHAPTER 8 ACCESSORIES...
  • Page 497 WorkCentre Pro 423/428 8-20 CHAPTER 8 ACCESSORIES 03/02 8.8 Stapler Finisher 10. Install the Finisher Receiving Tray. (Figure-9) 1) Insert the Finisher Receiving Tray into the opening of the Finisher. 2) Secure it with the Clips (2). (Figure-11) j0hn8075 13. Connect the AC Wire Harness. (Figure-12) 1) Remove the screw.
  • Page 498 17. Open the Finisher Front Door and remove the screw that secures the Stapler. (Figure- Note If the screw is not removed, “Finisher Error”… H5 fault occurs at power on. (Figure-14) j0hn8098 18. Connect the power cord and turn on the power. 03/02 8.8 Stapler Finisher WorkCentre Pro 423/428 8-21 CHAPTER 8 ACCESSORIES...
  • Page 499: Product Code

    WorkCentre Pro 423/428 8-22 CHAPTER 8 ACCESSORIES 03/02 8.9 English Kit 8.9 English Kit 3. Replace the IIT Control Panel. (Figure-2) 1) Remove the screws (4). 8.9.1 Product Code 2) Move to the right a little and lift up to release the Panel Hook from the IIT Frame.
  • Page 500: Fax Unit

    3) KL-Clip ..........1 4) Screw ..........4 5) One Touch Panel ......1 6) Label, JATE (FX Only) ...... 1 7) User Guide, Facsimile....... 1 8) NCU PWB (DMO) ......1 03/02 8.10 FAX Unit WorkCentre Pro 423/428 8-23 CHAPTER 8 ACCESSORIES...
  • Page 501 WorkCentre Pro 423/428 8-24 CHAPTER 8 ACCESSORIES 03/02 8.10 FAX Unit 2. DMO E Only: Refer to Figure 2 and set the jumpers for the area using the data DMO E Only: Adjust the jumper settings (Figure-2). supplied in Table 1.
  • Page 502 10. Provide an access hole in the Rear Cover for a modular jack. (Figure-7) 8. Connect the Connectors (2). (Figure-5) 1) Remove the blind plate of LINE 1. (Figure-5) j0hn8028 (Figure-7) j0hn8030 9. Close the MF Box. (Figure-6) 03/02 8.10 FAX Unit WorkCentre Pro 423/428 8-25 CHAPTER 8 ACCESSORIES...
  • Page 503 WorkCentre Pro 423/428 8-26 CHAPTER 8 ACCESSORIES 03/02 8.10 FAX Unit 11. Return the machine to its original state. 14. Return the IIT Control Panel to its original position. 12. Remove the IIT Control Panel. (Figure-8) 15. Connect the phone line to the “LINE1” on the Rear Cover.
  • Page 504  Confirm that the Country Code is as shown in Table 3. Table 3 Country Code Table Country Area Country Code Brazil DMO-W Argentina DMO-W Chile DMO-W Mexico DMO-W S Africa DMO-E Russia DMO-E Turkey DMO-E India DMO-E Morocco DMO-E 03/02 8.10 FAX Unit WorkCentre Pro 423/428 8-27 CHAPTER 8 ACCESSORIES...
  • Page 505: Speed Dial Expansion Kit

    WorkCentre Pro 423/428 8-28 CHAPTER 8 ACCESSORIES 03/02 8.11 Speed Dial Expansion Kit 8.11 Speed Dial Expansion Kit 3. Remove the Cables from the Rear Cover. 4. Remove the Screws (3) and the Rear Cover. 8.11.1 Product Outline 5. Remove the Screws (7) and the Electrical Cover.
  • Page 506: G3 Port

    4. Remove the Screws (7) and the Electrical Cover. (d) Screw ......... 5. Remove the Screws (2) and remove the Rear Cover from the Cabinet. 6. Install the Upper Bracket. (Figure-2) 03/02 8.12 G3 Port WorkCentre Pro 423/428 8-29 CHAPTER 8 ACCESSORIES...
  • Page 507 WorkCentre Pro 423/428 8-30 CHAPTER 8 ACCESSORIES 03/02 8.12 G3 Port 8. Install the Option Box. (Figure-4) CAUTION 1) Install the Screws (3) on the Stud. Electric parts may be damaged by static electricity. Be sure to wear a wrist strap when handling 2) Install the Option Box.
  • Page 508 18. Set the [Local Fax Information] items 6 to 8 and 15 to 17. Note If another G3M PWB was installed, set the [Local Fax Information] information items 9 to 11 and 18 to 20. 03/02 8.12 G3 Port WorkCentre Pro 423/428 8-31 CHAPTER 8 ACCESSORIES...
  • Page 509: Isdn/g4 Kit

    WorkCentre Pro 423/428 8-32 CHAPTER 8 ACCESSORIES 03/02 8.13 ISDN/G4 Kit 8.13 ISDN/G4 Kit 8.13.1 Product Outline This kit enables communicating in G4 mode through NTT INS64 Net. - When installing this kit, prepare also the Option Box Kit (Product Code: EL200111) for installation at the same time.
  • Page 510 (Figure-4) j0hn8035 2) Tighten the screws (2). 9. Connect the Connectors (2) and Flat Cable. (Figure-5) 1) Connect the Connectors (2). 2) Connect the Flat Cable. (Figure-3) j0hn8034 (Figure-5) j0hn8036 03/02 8.13 ISDN/G4 Kit WorkCentre Pro 423/428 8-33 CHAPTER 8 ACCESSORIES...
  • Page 511 WorkCentre Pro 423/428 8-34 CHAPTER 8 ACCESSORIES 03/02 8.13 ISDN/G4 Kit 10. Remove the Screws (6) and the Option Box Cover. 13. Return the Option Box Cover removed in Step 10 and secure the G4/ICM PWB using 11. Install the G4/ICM PWB. (Figure-6) the Screws (2) in the Kit.
  • Page 512: G4 Port

    4. Remove the Screws (2) and remove the Rear Cover from the Cabinet. 5. Remove the Screws (8) and the Option Box Cover. 6. Install the G4M PWB. (Figure-2) 03/02 8.14 G4 Port WorkCentre Pro 423/428 8-35 CHAPTER 8 ACCESSORIES...
  • Page 513: Line/ext Switching Kit

    WorkCentre Pro 423/428 8-36 CHAPTER 8 ACCESSORIES 03/02 8.15 Line/Ext Switching Kit 8.15 Line/Ext Switching Kit 3. Remove the Cables from the Rear Cover. 4. Remove the Screws (3) and the Rear Cover. 8.15.1 Product Outline 5. Remove the Screws (7) and the Electrical .
  • Page 514 2) Set the Chain/Function code "50/106" and press the Start button. 3) Change the set value to 1. 4) Exit C/E Mode. 12. Set the [Local Fax Information] items 12 to 14. 13. Store the removed NCU-A PWB. 03/02 8.15 Line/Ext Switching Kit WorkCentre Pro 423/428 8-37 CHAPTER 8 ACCESSORIES...
  • Page 515: Fax Hard Disk Kit

    WorkCentre Pro 423/428 8-38 CHAPTER 8 ACCESSORIES 03/02 8.16 Fax Hard Disk Kit 8.16 Fax Hard Disk Kit 6. Remove the Screw securing the G3M0 PWB. (Figure-2) 8.16.1 CAUTION Product Outline Electric parts may be damaged by static electricity. Be sure to wear a wrist strap when handling This kit is used to accumulate a large volume of document data.
  • Page 516 1) Enter C/E Mode. 2) Set the Chain/Function code "50/91" and press the Start button. 3) Check that the set value is 1. 4) Exit C/E Mode. 03/02 8.16 Fax Hard Disk Kit WorkCentre Pro 423/428 8-39 CHAPTER 8 ACCESSORIES...
  • Page 517: Product Code

    WorkCentre Pro 423/428 8-40 CHAPTER 8 ACCESSORIES 03/02 8.17 8MB Memory 8.17 8MB Memory 3. Disconnect the Cables from the Rear Cover. 4. Remove the Screws (3) and the Rear Cover. 8.17.1 Product Outline 5. Remove the Screws (7) and the Electrical Cover.
  • Page 518 2) Tighten the screw. (Figure-3) j0hn8052 8. Reinstall the G3M0 PWB. 9. Reinstall the Electrical Cover and Rear Cover. 10. Connect the power cord and turn on the power. 03/02 8.17 8MB Memory WorkCentre Pro 423/428 8-41 CHAPTER 8 ACCESSORIES...
  • Page 519: Printer Kit

    WorkCentre Pro 423/428 8-42 CHAPTER 8 ACCESSORIES 03/02 8.18 Printer Kit 8.18 Printer Kit from the “Current Jobs” folder. • Printer machines: Ensure that “Ready to print or fax” is indicated on the printer 8.18.1 Product Code control panel. Printer Kit: EL200116 (FX)
  • Page 520 1) Connect the Connector. 2) Secure it with the Clamps (2). (Figure-4) j0hn8056 (Figure-3) j0hn8055 14. Install the ESS Box. (Figure-4) 1) Install the ESS Box. 2) Tighten the screws (4). 03/02 8.18 Printer Kit WorkCentre Pro 423/428 8-43 CHAPTER 8 ACCESSORIES...
  • Page 521 WorkCentre Pro 423/428 8-44 CHAPTER 8 ACCESSORIES 03/02 8.18 Printer Kit 15. Connect the Connector. (Figure-5) 1) Secure the Control Panel Wire Harness with the Clamps (3). 2) Connect the Connector. (Figure-7) j0hn8059 18. Remove the Blind Cover from the Top Cover and install the Control Panel. (Figure-8) (Figure-5) j0hn8057 1) Remove the Blind Cover.
  • Page 522 20. Remove the Connector Cover (PL8.2) from the Left Cover and store. 21. Return the machine to its original state. 22. Connect the power cord and turn on the power. 03/02 8.18 Printer Kit WorkCentre Pro 423/428 8-45 CHAPTER 8 ACCESSORIES...
  • Page 523: Internet Fax

    WorkCentre Pro 423/428 8-46 CHAPTER 8 ACCESSORIES 03/02 8.19 Internet FAX 8.19 Internet FAX 8.19.1 Product Outline This kit is used to enable Internet FAX function. - This kit is installed on the followings: DocuCentre230/280FS(FS-DD) (FX) 235/285FS-DD (FXA) 235FS, 285FS-DD (FXK) 285FS-DD(PRC) - When installing this kit, the following kits are necessary.
  • Page 524: Token Ring

    "57/32": Email to Fax Gateway ON ramp "57/33": Email to Fax Gateway OFF ramp 3) Change the set value to 1. 4) Exit C/E Mode. 9. Put the Label on the Front Right Cover. 03/02 8.20 Token Ring WorkCentre Pro 423/428 8-47 CHAPTER 8 ACCESSORIES...
  • Page 525: Product Outline

    WorkCentre Pro 423/428 8-48 CHAPTER 8 ACCESSORIES 03/02 8.20 Token Ring 8.20 Token Ring 2. Turn the main unit power off. On printer or Fax-equipped machines, ensure that outstanding jobs have cleared 8.20.1 Product Outline before servicing or interrupting the power to the machine as follows:.
  • Page 526 Step 3. (Figure-4) 2) Remove the Slot Cover. 1) Install the Mother PWB Assembly. 2) Tighten the Screws (2). 3) Tighten the Screws (2). (Figure-3) j0hn8100 (Figure-4) j0hn8101 03/02 8.20 Token Ring WorkCentre Pro 423/428 8-49 CHAPTER 8 ACCESSORIES...
  • Page 527 WorkCentre Pro 423/428 8-50 CHAPTER 8 ACCESSORIES 03/02 8.20 Token Ring 6. Insert the Interface Board and secure it. (Figure-5) 10. If necessary, change the setting on the Printer UI. (Figure-6)* 1) Insert the Interface Board. 2) Tighten the Screws (2).
  • Page 528: Duplex Auto Document Feeder

    Open the lower side of the Top Cover Assembly to the right and left and turn the 9) Knob ......2 assembly around the front. 10) A3 Chart....1 03/02 8.21 Duplex Auto Document Feeder WorkCentre Pro 423/428 8-51 CHAPTER 8 ACCESSORIES...
  • Page 529 WorkCentre Pro 423/428 8-52 CHAPTER 8 ACCESSORIES 03/02 8.21 Duplex Auto Document Feeder (Figure-2) j0hn8079 (Figure-3) j0hn8080 5. Remove the Screws (2) and remove the Left Cover from the Platen Glass. 7. Remove the Covers (2) from the Top Cover Assembly. (Figure-4) 6.
  • Page 530 3) Press the Right Counter Balance to the rear, stop the Set Plate at the positioning pin Note Face the notch side of the Platen Cushion to the right. and secure it with the Knob. (Figure-6) j0hn8083 (Figure-5) j0hn8082 03/02 8.21 Duplex Auto Document Feeder WorkCentre Pro 423/428 8-53 CHAPTER 8 ACCESSORIES...
  • Page 531 WorkCentre Pro 423/428 8-54 CHAPTER 8 ACCESSORIES 03/02 8.21 Duplex Auto Document Feeder 11. Connect the IIT/DADF Cable. (Figure-7) (Figure-7) j0hn8084 12. Adjust the DADF Assembly height. (Figure-8) 1) The protrusions at the rear of the Under Cover of the DADF Assembly (1) should gently contact the DADF Platen Glass.
  • Page 532 - Adjustment 1) Enter C/E Mode. 2) Change the set value of Chain/Function code “21/80.” - Change rate : 0.127mm/1Step - Reducing the value causes image cutting.. 03/02 8.21 Duplex Auto Document Feeder WorkCentre Pro 423/428 8-55 CHAPTER 8 ACCESSORIES...
  • Page 533: Stamp Kit (red)

    WorkCentre Pro 423/428 8-56 CHAPTER 8 ACCESSORIES 03/02 8.22 Stamp Kit (Red) 8.22 Stamp Kit (Red) 2. Turn the main unit power off. On printer or Fax-equipped machines, ensure that outstanding jobs have cleared 8.22.1 Product Outline before servicing or interrupting the power to the machine as follows:.
  • Page 534 1mm/1Step 11. Store the accessory stamp replacement kit (consumable). (Figure-3) j0hn8064 5. Install the Stamp Solenoid. (Figure-4) 1) Install the Stamp Solenoid. 2) Connect the Connector. (Figure-4) j0hn8065 03/02 8.22 Stamp Kit (Red) WorkCentre Pro 423/428 8-57 CHAPTER 8 ACCESSORIES...
  • Page 535 WorkCentre Pro 423/428 8-58 CHAPTER 8 ACCESSORIES 03/02 8.22 Stamp Kit (Red)
  • Page 536 CHAPTER 9 BSD (Block Schematic Diagram)
  • Page 538 ACCESSORY (COPYLYZER & SW) (3 OF 4) 9-22 CH8.6 MONITORING 9-52 CH3.2D ACCESSORY (Parallel) (4 OF 4) 9-23 CH3.3 ELECTRIC BILLING 9-24 CH3.4A MONITORING 9-25 CH3.4B MONITORING 9-26 CH3.4C MONITORING 9-27 03/02 Contents WorkCentre Pro 423/428 CHAPTER 9 BSD (Block Schematic Diagrams)
  • Page 539 WorkCentre Pro 423/428 CHAPTER 9 BSD (Block Schematic Diagrams 03/02 Contents CH19.3 ESS (PRINTER) 9-80 CHAIN9 XEROGRAPHICS CH19.4 BLOCK DIAGRAM (FAX) 9-81 CH9.1 CRU SETTING AND DRIVING 9-53 CH19.5 MONITORING 9-82 CH9.2 CRU CONTROL 9-54 CH9.3 MONITORING 9-55 CHAIN10 FUSING AND COPY TRANSPORTATION CH10.1...
  • Page 540 This symbol represents the output power This symbol represents a signal test point. line of Chain 1. This symbol indicates that the signal flows in the opposite direction, from left to right. 03/02 Overview WorkCentre Pro 423/428 CHAPTER 9 BSD (Block Schematic Diagrams)

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