Page 1 Machine Type 5024-001 • Table of Contents • Start Diagnostics • Safety and Notices • Trademarks • Index • Manuals Menu Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.
Page 2 You can purchase additional copies of publications related to this product by calling 1-800-553-9727. In other countries, contact your point of purchase. Lexmark, Lexmark with diamond design, MarkNet, and MarkVision are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.
Page 3: Table Of Contents
5024-001 Table of Contents Notices and Safety Information ......xiii Laser Notices ......... . xiii Safety Information .
Page 4 5024-001 Control System Structure ....... .1-42 Electrical System and Function ......1-42 Control of Print Process .
Page 5 5024-001 993—Cleaner Clutch (FBCL) Service Check ....2-65 994—Fuser Clutch (FUCL) Service Check ....2-66 995—OPC Belt Cartridge, Belt Marker Sensor (PBS) Service Check .
Page 6 5024-001 Diagnostic Aids ........3-1 Disabling Download Emulations .
Page 7 5024-001 Handling the Printed Circuit Boards with MOS ICs ..........4-2 During Transportation/Storage: .
Page 8 5024-001 Optical Unit (Printhead Scanner Motor Assembly) Removal..4-44 Control Fan (3) (CTFAN) Removal ..... . .4-47 Heater Fan (HTFAN) Removal ......4-49 Ozone Fan (OZFAN) / Ozone Duct Assembly Removal .
Page 9 5024-001 Lower Feeder Unit (LFU) Removals ......4-94 Lower Feeder Unit Top Cover (R) Removal....4-95 Lower Feeder Unit Top Cover (L) Removal .
Page 10 5024-001 Locations ..........5-1 Printer .
Page 11 5024-001 Location 22......... 5-35 Location 23.
Page 12 5024-001 Parts Catalog ......... .7-1 How to Use this Parts Catalog .
Page 13: Notices And Safety Information
5024-001 Notices and Safety Information Laser Notices CAUTION: The following laser warning labels may be affixed to this printer as shown: xiii Notices and Safety Information...
Page 14 5024-001 Laser Notice The printer is certified in the U.S. to conform to the requirements of DHHS 21 CFR Subchapter J for Class I (1) laser products, and elsewhere is certified as a Class I laser product conforming to the requirements of IEC 60825.
Page 15 5024-001 Class I laser products are not considered to be hazardous. The printer contains internally a Class IIIb (3b) laser that is nominally a 5 milliwatt gallium arsenide laser operating in the wavelength region of 770-795 nanometers. The laser system and printer are designed so there is never any human access to laser radiation above a Class I level during normal operation, user maintenance, or prescribed service condition.
Page 16 5024-001 Avis relatif à l’utilisation de laser French Pour les Etats-Unis : cette imprimante est certifiée conforme aux provisions DHHS 21 CFR alinéa J concernant les produits laser de Classe I (1). Pour les autres pays : cette imprimante répond aux normes IEC 825 relatives aux produits laser de Classe I.
Page 17 5024-001 Avisos sobre el láser Spanish Se certifica que, en los EE.UU., esta impresora cumple los requisitos para los productos láser de Clase I (1) establecidos en el subcapítulo J de la norma CFR 21 del DHHS (Departamento de Sanidad y Servicios) y, en los demás países, reúne todas las condiciones expuestas en la norma IEC 825 para productos láser de Clase I (1).
Page 18 5024-001 Laserinformatie Dutch De printer voldoet aan de eisen die gesteld worden aan een laserprodukt van klasse I. Voor de Verenigde Staten zijn deze eisen vastgelegd in DHHS 21 CFR Subchapter J, voor andere landen in IEC 825. Laserprodukten van klasse I worden niet als ongevaarlijk aangemerkt.
Page 19 5024-001 Huomautus laserlaitteesta Finnish Tämä kirjoitin on Yhdysvalloissa luokan I (1) laserlaitteiden DHHS 21 CFR Subchapter J -määrityksen mukainen ja muualla luokan I laserlaitteiden IEC 825 -määrityksen mukainen. Luokan I laserlaitteiden ei katsota olevan vaarallisia käyttäjälle. Kirjoittimessa on sisäinen luokan IIIb (3b) 5 milliwatin galliumarsenidilaser, joka toimii aaltoalueella 770 - 795 nanometriä.
Page 20 5024-001 Laser-notis Swedish Denna skrivare är i USA certifierad att motsvara kraven i DHHS 21 CFR, underparagraf J för laserprodukter av Klass I (1). I andra länder uppfyller skrivaren kraven för laserprodukter av Klass I enligt kraven i IEC 825. Laserprodukter i Klass I anses ej hälsovådliga.
Page 21 5024-001 Avís sobre el Làser Catalàn Segons ha estat certificat als Estats Units, aquesta impressora compleix els requisits de DHHS 21 CFR, apartat J, pels productes làser de classe I (1), i segons ha estat certificat en altres llocs, és un producte làser de classe I que compleix els requisits d’IEC 825.
Page 22 5024-001 Japanese Laser Notice Chinese Laser Notice xxii Service Manual...
Page 23 5024-001 Korean Laser Notice xxiii Notices and Safety Information...
Page 24: Safety Information
This product is designed, tested and approved to meet strict global safety standards with the use of specific Lexmark components. The safety features of some parts may not always be obvious. Lexmark is not responsible for the use of other replacement parts. •...
Page 25 Il prodotto è stato progettato, testato e approvato in conformità a severi standard di sicurezza e per l’utilizzo con componenti Lexmark specifici. Le caratteristiche di sicurezza di alcune parti non sempre sono di immediata comprensione. Lexmark non è responsabile per l’utilizzo di parti di ricambio di altri produttori.
Page 26 Lexmark. Puede que las características de seguridad de algunas piezas no sean siempre evidentes. Lexmark no se hace responsable del uso de otras piezas de recambio. •...
Page 27 Lexmark. Les característiques de seguretat d'algunes peces pot ser que no sempre siguin òbvies. Lexmark no es responsabilitza de l'us d'altres peces de recanvi. • La informació pel manteniment d’aquest producte està...
Page 28 5024-001 xxviii Service Manual...
Page 29 5024-001 xxix...
Page 30: Preface
5024-001 Preface This manual and contains maintenance procedures for service personnel. It is divided into the following chapters: 1. General Information contains a general description of the printer and the maintenance approach used to repair it. Special tools and test equipment are listed in this chapter, as well as general environmental and safety instructions.
Page 31: General Information
Your Lexmark TM C720 color laser printer is the ideal printer for presentations, business graphics, line art, and text. The C720 uses laser diode electrophotographic technology to deliver remarkable quality print images and text. The C720 can be used as a shared network or desktop printer. Maintenance Approach The diagnostic information in this manual leads you to the correct field replaceable unit (FRU) or part.
Page 32: Serial Number
5024-001 Serial Number Look for the label on the rear cover of your printer for serial number information. The serial number is also listed in the menu settings page and can be printed from the utilities menu. Service Manual...
Page 33: Acronyms
5024-001 Acronyms ASIC Application-Specific Integrated Circuit Customer Ordered Customer Setup DRAM Dynamic Random Access Memory EEPROM Electrically Erasable Programmable Read-Only Memory Electrophotographic Process Electrostatic Discharge Field Replaceable Unit HVPS High Voltage Power Supply Local Area Network LASER Light Amplification by Stimulated Emission of Radiation Liquid Crystal Display Light-Emitting Diode...
Page 34: Standard Features
5024-001 Standard Features Printer (Main) Feature Description Print method Semiconductor laser and electrophotography Print 600 x 600 dpi addressability 2400IQ Print speed Cassette feed and continuous print: Monochrome • 24 sheets per minute (letter size) 2 (two) color • 12 sheets per minute (letter size) 4 (four) color •...
Page 35 5024-001 Feature Description Paper input Easy loading paper trays (no corner bucklers) Tray 1 - • 250 sheet drawer supporting A4, letter, based on 20 lb paper • 50 transparencies supporting A4, letter • 80 label sheets • 15 envelopes •...
Page 36 Systems or network connections: • Apple Macintosh Operating System or higher Note: The C720 printer with an optional Tri-Port adapter, Ethernet (EtherTalk) or Token-Ring (TokenTalk) MarkNet N2000 Internal Print Server installed supports the Apple operating system. The...
Page 37 • Windows 95/98/Me PCL 6 Lexmark printer drivers (C720) • Windows 95/98/Me PostScript 3 Lexmark printer drivers (C720) • Windows NT 4.0 PCL 6 Lexmark printer drivers (C720) • Windows NT 4.0 PostScript 3 Lexmark printer drivers (C720) • Windows 2000 PCL 6 Lexmark printer drivers (C720) •...
Page 38 • AC 120 +/- 10% Volts • AC 220 to 240 ± 10% Volts Temperature 0° to 35°C (32° to 95°F) Controller Lexmark controller (high performance) RIP page storage Hard disk option can be partitioned for intermediate RIP page storage. Printer...
Page 39 5024-001 Feature Description Operator panel Front cover mounted operator panel for menus Dimensions • Printer – H 410 mm (16.1 in.) – W 500 mm (19.7 in.) – D 520 mm (20.5 in.) • Printer with optional drawer unit – H 555 mm (21.9 in.) –...
Page 40 5024-001 Feature Description Development Toner cartridge (CMYK) Transferring of Transfer drum image Cleaning system Blade/brush system 2nd transfer to Roller transfer system paper Separating Paper discharger / corona system Fusing system Heat roller fusing system Paper exit system Top output bin: 250 sheets face down Note: Output capacity is determined by output tray full sensor.
Page 41: Printer Options
5024-001 Printer Options Option Description Lower Feed Unit Drawer unit with one (1) 500-sheet tray installed underneath the printer. Duplex unit Provides two sided color or monochrome printing Memory Maximum usable memory: 384MB. Hard disk option 2.5-inch hard disk to store fonts, forms, job statistics, and spooled jobs (4GB limit) MarkNet™...
Page 42: Printer Identification
5024-001 Printer Identification 1-12 Service Manual...
Page 43: Options Identification
5024-001 Options Identification 1-13 General Information...
Page 44: Printer Theory Of Operation
5024-001 Printer Theory of Operation The following diagram shows the major parts of the printer and paper path. 1-14 Service Manual...
Page 45: Printer Systems Description
5024-001 Printer Systems Description See the illustration “Printer Component Systems” on page 1-17, for more information. Basic Principles of Color Printing Color printing is made through the subtractive process of combining the three primary colors, yellow, magenta, and cyan. Mechanical and Electrical Structures The 5024 color laser printer consists of five engineering systems: print, transfer, optical, paper transport, and control system.
Page 46 5024-001 Optical System The optical system consists of two functional parts that forms an electrostatic latent image on the OPC belt using a laser light. Optical unit Scanner motor (SCM) Paper Transport System The paper transport system consists of five functional parts that picks up paper from the paper cassette, separates the transported paper from the transfer drum, and exits it from the printer after fusing the toner image on the paper.
Page 47: Printer Component Systems
5024-001 Printer Component Systems 1-17 General Information...
Page 48: Basic Process Of Color Printing
5024-001 Basic Process of Color Printing 1. The 5024 printer has a toner cartridge for each color — yellow, magenta, cyan, and black. 2. The toner image is developed with the primary colors and then transferred to the transfer drum for the color combination. 3.
Page 49: Print System And Transfer System
5024-001 Print System and Transfer System This illustration shows the basic structure of the print system having the OPC belt as a main function, and the transfer system including the transfer drum. A color print is accomplished by actuating each process in the print system and the transfer system.
Page 50: Structure Of Opc Belt (Photo Developer Cartridge)
5024-001 Structure of OPC Belt (Photo Developer Cartridge) The OPC belt consists of a surface layer having an optical photoconductor (OPC) of organic material, the inner layer consists of an insulator material (PET), and the aluminum deposit layer in between. The OPC belt is a main part of the print system. 1-20 Service Manual...
Page 51: Basic Structure Of The Print System
5024-001 Basic Structure of the Print System 1. The print system process consists of the following: a. The OPC belt is biased to the voltage -CBV(V) by the power supply CBV. b. Negative high voltage is applied to the charger unit by the power supply CHV, and the corona is generated as a result.
Page 52 5024-001 2. Variation of the OPC belt potential. a. The OPC belt is biased to -CBV(V). b. The OPC belt surface is evenly charged to -Vo(V) in the charging process. c. During the exposing process, the optical unit emits a laser beam that strikes the OPC belt surface forming an electrostatic image.
Page 53: Details Of The Print System
5024-001 Details of the Print System Charging Process In the charging process, the OPC belt is evenly charged by the charger. See “Printer Theory of Operation” on page 1-14 charger unit location. The charger unit consists of a case, corona wire, and grid. 1.
Page 54 5024-001 2. Before charging, the OPC belt surface is -CBV(V). The charger unit evenly charges the OPC belt surface to -Vo(V) by generating a negative charge. 1-24 Service Manual...
Page 55: Exposing Process
5024-001 Exposing Process In the exposing process, the OPC belt surface is exposed to the laser light which forms an electrostatic latent image. The luminous source of the laser is a semiconductor laser. See “Printer Theory of Operation” on page 1-14 for optical unit location.
Page 56: Developing Process
5024-001 Developing Process In the developing process, an electrostatic latent image becomes visible on the OPC belt using the printer toner. There are four toner cartridges in the 5024 printer. See “Printer Theory of Operation” on page 1-14 for toner cartridges location. The toner cartridges are located in the printer from top to bottom in the color order of black, yellow, magenta and cyan.
Page 57 5024-001 The first illustration shows the relationship between the toner, the -Vo(V) at the non-exposed area of the OPC belt and the -VR(V) at the exposed area of the OPC belt. 3. Developing is processed by toner adhering to the OPC belt due to the attraction between the toner and the -VR(V) at the exposed area of OPC belt.
Page 58: First Transfer (Drum) Process
5024-001 First Transfer (Drum) Process The first transfer process consists of toner images on the OPC belt being transferred to the transfer drum. See “Printer Theory of Operation” on page 1-14 for transfer drum location. Note: Semiconductor rubber is attached to the drum surface. 1.
Page 59 5024-001 3. Toner on the OPC belt is moved to the transfer drum This is due to the difference of potential between the OPC belt and the transfer drum. Toner that has been developed, in each color, is moved from the OPC belt to the transfer drum, and the two color toner image is overlapped on the transfer drum.
Page 60: Belt Discharge (Erase Lamp) Process
5024-001 Belt Discharge (Erase Lamp) Process In the belt discharge process, an LED light radiating on the OPC belt discharges the residual charge -VR(V) preparing it for electrical belt cleaning. The erase lamp is a luminous source of 24 pieces of light emitting diodes (LED).
Page 61: Belt Cleaning Process
5024-001 Belt Cleaning Process In the belt cleaning process, left behind residual toner adhering to the OPC belt surface is mechanically removed by a blade edge. The removed residual toner is collected in a waste toner container located by the waste toner feeder. 1-31 General Information...
Page 62: Details Of The Transfer System
5024-001 Details of the Transfer System Second Transfer (Paper) Process In the second transfer process, the toner image on the transfer drum is transferred to paper. See “Printer Theory of Operation” on page 1-14 for second transfer roller location. The transfer roller, normally separated from the transfer drum, is positively biased by the power supply THV.
Page 63: Paper Discharging Process
5024-001 Paper Discharging Process In the paper discharging process, the paper, with the image transferred, is separated from the transfer drum by applying an AC charge to the paper. See “Printer Theory of Operation” on page 1-14 for paper discharge location. The AC charger unit, consisting of a case and charger wire, has high alternating voltage (VAC) injected into it.
Page 64: Drum Cleaner Process
5024-001 Drum Cleaner Process In the drum cleaner process, the residual toner on the surface of the transfer drum is removed after the paper transfer process. See “Printer Theory of Operation” on page 1-14 for drum cleaner unit location. The drum cleaner brush is a semiconductor type fur brush (positively self-biased by positive voltage FCBV(V)) which cleans the surface of the rotating transfer drum.
Page 65: Details Of The Optical System
5024-001 Details of the Optical System In the optical system process, the printer utilizes a semiconductor laser diode as a light source. This laser diode is controlled by fast switching which matches the transmitted image data (video signal). The generated laser light scans the OPC belt through a polygon mirror and lens.
Page 66 5024-001 Description Mirror: laser beam path reflecting mirror LDC: laser diode control circuit PD: photo detector BTD mirror: beam timing detector mirror to guide the laser beam to PD 1-36 Service Manual...
Page 67: Details Of The Paper Transportation System
5024-001 Details of the Paper Transportation System In the paper transportation process, paper is automatically fed by the pick-up roller and transported to the registration roller. The registration roller synchronizes with the transfer drum. The registration roller transports the paper to the transfer roller. During the transfer process, the transfer roller forwards the paper to the fuser rollers.
Page 68 5024-001 Name of Part Outline of Function Registration Roller to transport paper synchronizing with the Roller transfer drum. Transfer Print processing utilizing the transfer drum and transfer roller to transfer a toner image to paper. Paper Corona generator to generate AC corona for Discharging separating paper from the transfer drum.
Page 69: Fusing Unit
5024-001 Fusing Unit The fusing unit utilizes a thermal fusing system that contains two rollers with an inner heating element. Paper carrying a toner image passes between the heat rollers. Heat and pressure are applied to the paper. The fusing unit consists of the following components: Name of Part Outline of Function Fusing roller...
Page 70 5024-001 Name of Part Outline of Function Fusing heater A heating device that is heated by a halogen lamp. Thermistor A sensor that detects the temperature of the fuser roller’s surface. Thermal fuse Protective device that prevents the fuser roller from being excessively heated.
Page 71: Fusing Process
5024-001 Fusing Process 1. Silicone oil, supplied from the oil bottle, is applied to the fuser roller surface and the back-up roller. 2. The toner image is transferred on the paper, but not yet fused to the paper. 3. The transported paper (toner transferred on, but not fused to the paper) passes between the heater roller and the back-up roller.
Page 72: Control System Structure
5024-001 Control System Structure Electrical System and Function The main engine (MCTL P.W.B.) board controls most of the main electrical parts in this printer. Control Process Outline of Function Print process Controls the print process from paper feed control through paper exit. Laser output Automatically controls the laser output to control...
Page 73: Control Of Print Process
5024-001 Control of Print Process Control Block Diagram Control Process Outline of Function Sequence control Controls the print sequence of the printer. Temperature Controls the temperature of the fuser unit. control Toner empty Controls the toner empty status for each sensing control toner cartridge.
Page 74: Print Sequence Diagram
5024-001 Print Sequence Diagram 1-44 Service Manual...
Page 75: Laser Drive Control Circuit
5024-001 Laser Drive Control Circuit The laser drive control circuit (LDC) consists of a video signal input circuit, laser drive circuit, laser diode, output sensing circuits and output control circuit. See the illustration. 1. When the video signal is received, the laser drive control circuit switches the laser diode switch on and radiates according to the video signal.
Page 76 5024-001 1-46 Service Manual...
Page 77: Interface Control
5024-001 Interface Control Interface Type The printer controller acts in conjunction to the LPC. Through the video interface, the LPC controls the printer and operator panel using command/status communication and transmits the synchronized video data to the printer laser diode. The operator panel is physically resident on the engine.
Page 78: Lower Feed Unit Theory Of Operation
5024-001 Lower Feed Unit Theory of Operation The lower feed unit is used for two purposes: 1. Provide paper to the printer 2. Provide paper, from the duplex unit, to re-enter the print cycle The lower feed unit has a paper size detection mechanism which has a size lever in Tray 2 and a size sensor (PSL) in the lower feed unit.
Page 79: Duplex Theory Of Operation
5024-001 Duplex Theory of Operation The duplex unit allows the printer to print on both sides of a sheet of paper. The duplex unit uses two motors to move the paper from the paper exit of the printer through the duplex unit. The paper is fed back into the printer through the attached lower feed unit.
Page 80 5024-001 Name of Part Outline of function D-Top Unit Transports the front printed page to the duplex unit. D-Lower Unit Reverses the front printed page for printing on the back of the page. Cover Low (B) Rear enclosure can be opened to clear an inner paper jam or for performing a maintenance job.
Page 81: Diagnostic Information
5024-001 2. Diagnostic Information Start CAUTION: Remove power from the printer before you connect or disconnect any cable, electronic board or assembly, for personal safety and to prevent damage to the printer. Always use the hand grips on the side of the printer and be sure your fingers are not under the printer when you set the printer down.
Page 82: Service Error Codes
5024-001 Service Error Codes Error Code Action Contact customer service center, or Lexmark support center RIP Software This error indicates a yellow developer problem. Yellow Developer Go to “901—Yellow Developer Clutch Service Clutch Error (DCLY) Check” on page 2-38. This error indicates a magenta developer problem.
Page 83 5024-001 Error Code Action This error indicates that the developing motor (DM) drive may have a problem. Developing Motor Error (DM) Go to “910—Developer Motor (DM) Drive Service Check” on page 2-45. This error indicates a problem with the main motor. Main Motor (MM) Go to “911—Main Motor (MM) Service Check”...
Page 84 5024-001 Error Code Action The fuser is in a maintenance state and needs to be replaced before any other action can be taken. Fuser Exhausted Have the customer order a new fuser maintenance kit. Replace the fuser and note whether any error code exists.
Page 85 5024-001 Error Code Action Go to the “911—Main Motor (MM) Service Check” on page 2-47, for more information. Process Timing Clock Error Indicates the NVRAM failed the CRC check. Replace the main engine (MCTL P.W.B.) board. NVRAM Chip Failure Indicates the main engine (MCTL P.W.B.) board NVRAM failed the CRC check.
Page 86 5024-001 Error Code Action Indicates that the DRAM installed in slot 2 on the controller board is defective. Replace the DRAM Memory RAM Error SIMM. If this does not fix the problem, replace the RIP controller board assembly. Indicates that the DRAM installed in slot 3 on the controller board is defective.
Page 87 5024-001 Error Code Action Indicates that flash parts failed while programming network card x. If this is a network model printer, Flash Parts Failed replace the controller board. While Programming Network Card x Error The error indicates a problem with the duplex (DUP P.W.B.) and main engine (MCTL P.W.B.) hardware Duplex Controller control.
Page 88 5024-001 Error Code Action This error indicates a problem with the transfer Roller cam clutch. Transfer Roller Cam Clutch (TRCM) Error Go to “991—Transfer Roller Cam Clutch (TRCM) Service Check” on page 2-63. This error indicates a problem with the drum cleaner brush cam clutch.
Page 89: Operator Messages
5024-001 Operator Messages Message Description Action Bin Full A bin is full. The bin Check the tray/bin full sensor full warning is PFUL and connector DCN14 cleared when the on IOD1 board. output level reported by the bin Replace as necessary. is no longer full.
Page 90 5024-001 Message Description Action Close Front Door The front door is Close front door. Check switch open. (DSW1), cable and connector DCN5 on the IDO1 P.W.B. board. Replace if necessary. Replace the IDO1 P.W.B. board if necessary. Replace printer main engine (MCTL P.W.B.) board, if necessary.
Page 91 5024-001 Message Description Action Did you replace the Cleaning roller is Replace fuser cleaner roller. Fuser Cleaner? near end of life. If the cleaning roller is Note: This is a customer not replaced when orderable part. the warning is cleared, the printer Replace the fuser cleaner to repeats this warning prevent this message from...
Page 92 5024-001 Message Description Action Menus Disabled The printer menus If the operator has disabled the have been disabled. menu and you want to run This occurs when operator print tests, turn the <Menu> is pressed machine Off and then press while the printer is Go and Stop as you turn the Ready and menu...
Page 93 5024-001 Message Description Action Remove Paper Remove paper. Check paper exit full sensor Standard Bin (PFUL), cable and connector DCN14 on the IDO1 P.W.B. board. Replace the IDO1 P.W.B. board if necessary. Replace printer main engine (MCTL P.W.B.) board, if necessary.
Page 94 5024-001 Message Description Action Tray 1 Empty An input tray is out Check the tray, the cassette Tray 2 Empty of media. empty sensor, and connectors DCN8 and DCN4 on the ID01 board. Tray 1–PEU Tray 2–PEL Replace as necessary. Replace the IDO1 P.W.B.
Page 95 5024-001 Message Description Action 35 Res Save Off The printer lacks To enable Resource Save Deficient Memory the memory needed after this message is to enable Resource displayed, either install Save. This additional memory or set each message usually link buffer to the Auto value. indicates that too much memory is After you set all link buffers to...
Page 96 5024-001 Message Description Action 38 Memory Full This message is Press Go to clear the message displayed when the and continue printing. Some printer memory data may not print or may not used to store pages print correctly. is full. Cancel the print job.
Page 97 5024-001 Message Description Action 50 PPDS Error Refer to operator manual. 51 Defective Flash The printer detects Press Go to clear the a defective flash message. Flash operations are during power on, or not allowed until the problem is during format and resolved.
Page 98 5024-001 Message Description Action 54 Par x ENA An external network Ensure the cable connecting Connection Lost adapter (ENA) that the ENA and the printer is was once securely attached. Turn the connected to the printer Off and then On again specified parallel to see if the printer recognizes port is no longer...
Page 99 5024-001 Message Description Action 54 Serial x Fax The printer has If the modem has been Connection Lost detected the intentionally disconnected, you external modem can press Go to clear the that was once message and continue connected to the printing.
Page 100 5024-001 Message Description Action 55 Insufficient Fax This attendance Press Go to clear the message Buffer message may and continue processing the appear if the printer current print job. is processing a print job. The printer Reset the printer. Press must complete the Menu>...
Page 101 5024-001 Message Description Action 56 Std Parallel Port Data is sent to the Press Go to clear the Disabled printer across the message. The printer discards parallel port, but the the data sent to the parallel parallel port is port. disabled.
Page 102 5024-001 Message Description Action 63 Unformatted The hard disk Press Go to clear the Disk installed in your message. If the error message printer has not been remains, the disk may be formatted. You must defective and need replacing. format the disk before you can To format the disk, select download...
Page 103 5024-001 Message Description Action 81 Oil Bottle Low The oil bottle is low Replace the oil bottle. on oil. Press Go to clear the message and continue printing. Note: This is a customer orderable part. 82 Photo Developer The photo Replace the photo developer (OPC Belt developer (OPC...
Page 104 84 Transfer Drum The transfer drum Press Go to clear the Exhausted has reached its end message. of life. Contact your local Lexmark dealer to arrange for a trained service professional to replace the transfer drum. Reset counter after replacement. 2-24...
Page 105 5024-001 Message Description Action 85 Fuser Cleaner The fuser cleaner Replace the fuser cleaner and Exhausted has reached its end reset the maintenance counter of life. to continue printing. This is a customer orderable part. 85 Fuser Cleaner The fuser cleaner is Correctly install the fuser Missing either missing or...
Page 106 5024-001 Message Description Action 88 <color> Toner The printer has Install a new toner cartridge. Empty ceased operating because the Check the toner empty sensors specified toner TPD and TTR and connector cartridge is empty. DCN7 on the IDO1 P.W.B. You cannot print board.
Page 107: Paper Jam Messages
5024-001 Paper Jam Messages The following illustration lists the paper jam messages indicating where the paper jam occurred. 2-27 Diagnostic Information...
Page 108 5024-001 To locate Message For details see… the jam… 201 Paper Jam Open the 201 paper is jammed in the inner rear door transport area or at the drum. Open Rear Door 1. Open the printer rear door. 2. Check the paper feed sensor (PT1) and its actuators.
Page 109 5024-001 To locate Message For details see… the jam… 202 Paper Jam Open the 202 paper jammed in the fuser or top cover paper exit rollers. Open Top Cover 1. Open the top cover and rear door, remove the paper. 2.
Page 110 5024-001 To locate Message For details see… the jam… 202 Paper Jam Open the 202 / 85 the fuser is exhausted or the Open Top top cover fuser is in a maintenance state which Cover may cause a re-occurring 201 paper jam.
Page 111 5024-001 To locate Message For details see… the jam… 231 Paper Jam Open the 231 check the duplex lower paper duplex unit sensor (PT4) and actuator. Ensure Duplex Low lower door connector CN6 on the duplex relay Door P.W.B. Board is plugged in. Replace the duplex relay P.W.B.
Page 112: Symptom Tables
5024-001 Symptom Tables Printer Symptom Table Symptom Action Operator Panel buttons do not Go to “Operator Panel Service work Check” on page 2-70. Operator Panel display is blank, Go to “Operator Panel Service printer beeps 5 times Check” on page 2-70.
Page 113 5024-001 Symptom Action The Main Motor (MM) makes Go to “911—Main Motor (MM) noise or continuously runs Service Check” on page 2-47. The Transfer Drum is making Go to “990—Transfer Drum noise when rotated or it does not Encoder Sensor (HPSEN) Service rotate at all Check”...
Page 114: Print Quality Symptom Table
5024-001 Print Quality Symptom Table Symptom Action Background Go to “Background Service Check” on page 2-83. Missing Image at Edge Go to “Missing Image at Edge Service Check” on page 2-91. Jitter Go to “Jitter Service Check” on page 2-90. Ribbing Go to “Ribbing Service Check”...
Page 115 5024-001 Symptom Action Color Misregistration Go to “Color Misregistration Service Check” on page 2-87. Mottle Go to “Mottle Service Check” on page 2-93. Residual Image Go to “Residual Image Service Check” on page 2-94. Insufficient Gloss Go to “Insufficient Gloss Service Check”...
Page 116: Optional Lower Feed Unit Symptom Table
5024-001 Optional Lower Feed Unit Symptom Table Symptom Action No power Go to “Options No Power Service Check” on page 2-72. Paper Feed problem in Lower Go to “Lower Feed Unit Paper Feed Unit Feed Service Check” on page 2-79. Printer does not clear or reset Go to “Operator Messages”...
Page 117: Optional Duplex Unit Symptom Table
5024-001 Optional Duplex Unit Symptom Table Symptom Action Printer does not clear or reset Go to “Operator Messages” on Operator Messages or controls page 2-9 and follow action to be for Duplex Unit taken. Paper Feed problems for Duplex Go to “Duplex Paper Feed Service Unit Check”...
Page 118: Printer Service Checks
5024-001 Printer Service Checks 901—Yellow Developer Clutch Service Check Action Check Connector Ensure the DCLY connector ENC14 on the IOD2 P.W.B. board is firmly connected. Connect if necessary. Yellow Developer Check the voltage between ECN14-3 and Clutch (DCLY) ECn2-6 on the IOD2, P.W.B. board. If the voltage drops below +24V, replace the yellow developer clutch DCLY.
Page 119: 902-Magenta Developer Clutch Service Check
5024-001 902—Magenta Developer Clutch Service Check Action Check Clutch Ensure the magenta developer clutch (DCLM) connector ECN15 on the IOD2 P.W.B. board is firmly connected. Magenta Developer Check the voltage between ECN15-3 and Clutch (DCLM) ECN2-6 on the IOD2 P.W.B. board. If the voltage drops below +24V, replace the magenta developer clutch (DCLM).
Page 120: 903-Cyan Developer Clutch Service Check
5024-001 903—Cyan Developer Clutch Service Check Action Check Clutch Ensure the cyan developer clutch (DCLC) connector ECN16 on the IOD2 P.W.B. board is properly connected. Cyan Developer Clutch Check the voltage between ECN16-3 and (DCLC) ECN2-6 on the IOD2 P.W.B. board. If the voltage drops below +24V, replace the Cyan Developer (DCLC).
Page 121: 904-Black Developer Clutch Service Check
5024-001 904—Black Developer Clutch Service Check Action Check Clutch Ensure the black developer clutch (DCLK) connector ECN13 on IOD2 P.W.B. board is properly connected. Black Developer Clutch Check the voltage between ECN13-3 and (DCLK) ECN2-6. If the voltage drops below +24V, replace the black developer clutch (DCLK).
Page 122: 905-Yellow/Black Developer Solenoid Service Check
5024-001 905—Yellow/Black Developer Solenoid Service Check Action Check Connector Ensure the black/yellow solenoid connector ECN5 on the IOD2 P.W.B. Check Cable Harness board is connected. Ensure the cable harness for the solenoid (PSL KY) is not broken. Replace any damaged parts. Developer Solenoid Check the voltage at (PSL KY) ON-N.
Page 123: 906-Magenta/Cyan Developer Solenoid Service Check
5024-001 906—Magenta/Cyan Developer Solenoid Service Check Action Check Connector Ensure the magenta/cyan solenoid connector ECNS on the IOD2 P.W.B. Check Cable Harness board is connected. Ensure the cable harness for (PSL MC) is not broken. Replace any damaged parts. Developer Solenoid Check the voltage at (PSL MC) ON-N.
Page 124: 907-Toner Empty Sensor P.w.b. Board Service Check
5024-001 907—Toner Empty Sensor P.W.B. Board Service Check Action Check Connector Ensure the toner empty sensor (LED) connector is connected correctly to DCN7 on IOD1 P.W.B. board. • Toner Sensor, P.W.B. Check the voltage for (LEDON-N/D) Board (LED side) If the voltage jumps to +24V between •...
Page 125: 910-Developer Motor (Dm) Drive Service Check
5024-001 910—Developer Motor (DM) Drive Service Check Action • Toner Cartridge If any unusual rotation noise is heard while printing, check the toner cartridge • Developer Gear Unit and replace, if necessary. • Developer Motor If the noise continues after the toner cartridge is replaced, check the developer gear unit by manually turning the motor.
Page 126 5024-001 Action • IOD2 P.W.B. Board If after replacing the developer motor the problem still exists, replace in the • IOD1 P.W.B. Board following order until the problem is • Main Engine (MCTL resolved: P.W.B.) Board • IOD2 P.W.B. board •...
Page 127: 911-Main Motor (Mm) Service Check
5024-001 911—Main Motor (MM) Service Check Action OPC Belt Print Check the OPC belt cartridge for any Cartridge rotation. If the main motor (MM) attempts to turn but the OPC belt cartridge does not, replace the OPC belt cartridge. Note: The OPC belt cartridge is a customer order supply.
Page 128 5024-001 Action Main Motor (MM) Check for +24V between: MM1-4 and MM1-5. • ECN12-4 and ECN12-5 • ECN2-5 and ECN2-1 If there is +24V, replace the main motor (MM). Check for +5V between: • MM1-6 and MM1-7 • ECN12-6 and ECN12-7 •...
Page 129 5024-001 Main Motor (MM) 2-49 Diagnostic Information...
Page 130: 915-Control Cooling Fan Service Check
5024-001 915—Control Cooling Fan Service Check Action Check Connector Ensure the control cooling fan motor is properly connected to DCN18 on the IOD1 P.W.B. board. Check that DCN1 or the IOD1 P.W.B. board and 11CN on the main engine (MCTL P.W.B.) board are connected. Control Cooling Fan Check the voltage between DCN18-1 and Motor (CTFAN)
Page 131: 916-Ozone Fan Service Check
5024-001 916—Ozone Fan Service Check Action Check Connector Ensure the ozone fan motor connector is properly connected to ECN5 on the IOD2 P.W.B. board. Ensure connectors ECN1 on the IOD2 P.W.B. board and 12CN on the main engine (MCTL P.W.B.) board are properly connected.
Page 132: 917-Fuser Heater Fan Service Check
5024-001 917—Fuser Heater Fan Service Check Action Check Connector Ensure the fuser heater fan motor connector is properly connected to DCN14 on the IOD1 P.W.B. board. Ensure DCN1 on the IOD1 P.W.B. board and 11CN on the main engine (MCTL P.W.B.) board are connected properly.
Page 133: 918-Erase Lamp Service Check
5024-001 918—Erase Lamp Service Check Action Check Connector Ensure the erase lamp connector is properly connected to DCN7 on the IOD1 board. Ensure DCN1 on the IOD1 board and 11CN on the main engine (MCTL P.W.B.) board are connected. Erase Lamp (LED Check for voltage between DCN7-11 and P.W.B.) DCN2-25 on the IOD1 board.
Page 134: 920, 922, 923-Fuser Unit Service Check
5024-001 920, 922, 923—Fuser Unit Service Check Action Fuser Unit Check for dirt or any damage to the fuser unit and replace, if necessary. Turn the machine on and determine whether the fuser heater is On. If the heater lamp is On, check for the correct input line voltage.
Page 135: 921-Fuser Thermistor Service Check
5024-001 921—Fuser Thermistor Service Check Action Fuser Unit Ensure the fuser is properly installed. If the fuser is damaged, replace the fuser unit. Note: The fuser unit is a customer order supply. Fuser Connector Check the fuser connector for damage and replace, if necessary.
Page 136: 981-Duplex Motor (Dpm1, Dpm2) Service Check
5024-001 981—Duplex Motor (DPM1, DPM2) Service Check Action Gears, Belts, Rollers Check the duplex drive train for binds or broken gears, belts or rollers. Replace any damaged parts. • Duplex Motor Check the resistance of the duplex motors (DPM1) (DPM1). •...
Page 137 5024-001 Duplex Motor (DPM1, DPM2) 2-57 Diagnostic Information...
Page 138: 982-Duplex Upper Solenoid (Dsol-U) Service Check
5024-001 982—Duplex Upper Solenoid (DSOL-U) Service Check Action Check Connector Ensure connector, CN8, is connected properly between the duplex upper solenoid DSOL and duplex relay P.W.B. board. Ensure connector, CN1, on the relay P.W.B. board is connected properly with DPCN2 on the duplex P.W.B. board. •...
Page 139: 983- Duplex Fan (D-Fan) Service Check
5024-001 983— Duplex Fan (D-FAN) Service Check Action Check Connector Ensure connector CN4 is properly connected between the D-FAN and the duplex relay P.W.B. board. Ensure connector duplex CN1 is properly connected to DPCN3 on the duplex DUP P.W.B. board. •...
Page 140: 984-Duplex Lower Solenoid (Dsol-L) Service Check
5024-001 984—Duplex Lower Solenoid (DSOL-L) Service Check Action Check Connector Ensure connector, CN3, is connected properly between DSOL and relay P.W.B. board. Ensure connector, CN1, on the relay P.W.B. board is connected properly with D-CN2 on the DUP P.W.B. board. •...
Page 141: 990-Transfer Drum Encoder Sensor (Hpsen) Service Check
5024-001 990—Transfer Drum Encoder Sensor (HPSEN) Service Check Action Transfer Drum Check the OPC belt cartridge for proper installation. The transfer drum should rotate with little resistance. If the transfer drum does not rotate lightly or the encoder plate is damaged, replace the transfer drum.
Page 142 5024-001 Drum HP Sensor 2-62 Service Manual...
Page 143: 991-Transfer Roller Cam Clutch (Trcm) Service Check
5024-001 991—Transfer Roller Cam Clutch (TRCM) Service Check Action Check Connector Ensure connectors ECN8 on the IOD2 P.W.B. board is properly connected to the transfer roller cam clutch (TRCM). Ensure ECN1 on the IOD2 P.W.B. board and 12CN on the main engine (MCTL P.W.B.) board are properly connected.
Page 144: 992-Drum Cleaner Brush Cam Clutch (Fbcm) Service Check
5024-001 992—Drum Cleaner Brush Cam Clutch (FBCM) Service Check Action Check Connector Ensure the drum cleaner brush cam clutch (FBCM) connector and ECN10 on the IOD2 P.W.B. board are properly connected. Ensure ECN1 on the IOD2 P.W.B. board is connected to 11CN on the main engine (MCTL P.W.B.) board.
Page 145: 993-Cleaner Clutch (Fbcl) Service Check
5024-001 993—Cleaner Clutch (FBCL) Service Check Action Check Connector Ensure ECN11on IOD2 P.W.B. board is properly connected to the cleaner clutch (FBCL). Ensure ECN2 on IOD2 P.W.B. board is properly connected to DCN10 on IOD1 P.W.B. board. Ensure ECN1 on IOD1 is properly connected to 11CN on the main engine (MCTL P.W.B.) board.
Page 146: 994-Fuser Clutch (Fucl) Service Check
5024-001 994—Fuser Clutch (FUCL) Service Check Action Check Connector Ensure a proper connection between ECN9 on IOD2 and the fuser clutch (FUCL). Ensure ECN1 on IOD2 is properly connected to 12CN on the main engine (MCTL P.W.B.) board. Cleaner Clutch (FUCL) Check for +24V between ECN9-3 and CN2-5 on the IOD2 P.W.B.
Page 147: 995-Opc Belt Cartridge, Belt Marker Sensor (Pbs)
5024-001 995—OPC Belt Cartridge, Belt Marker Sensor (PBS) Service Check Action Belt Cartridge (OPC) Ensure the printer is level. If the belt sensor (PBS) is stained, clean the belt marker sensor. Replace the OPC belt cartridge if it is damaged or leaning to one side. Check Connector Ensure a proper connection between DCN16 on the IOD1 P.W.B.
Page 148 5024-001 OPC Belt Sensor (P.B.S) 2-68 Service Manual...
Page 149: 997-High Voltage Power Supply Unit (Hvu) Service Check
5024-001 997—High Voltage Power Supply Unit (HVU) Service Check Action OPC Belt Cartridge Ensure the charge unit, on the belt cartridge, is installed correctly. Check the charge corona wire for a cut or short. Replace the OPC belt cartridge, if necessary.
Page 150: Opc Belt (Photo Developer) Cartridge Drive Service Check
5024-001 OPC Belt (Photo Developer) Cartridge Drive Service Check Action OPC Belt Cartridge Check the OPC belt cartridge for damage and proper installation and replace, if necessary. Belt Cartridge (BC) Ensure cartridge installation guides and Lock Levers latches are not damaged and replace, if necessary.
Page 151 5024-001 Action • Operator Panel If the operator panel display is blank, 5 Assembly beeps are emitted and the LED is Off. • Main Engine (MCTL Replace the operator panel assembly. P.W.B.) Board • Control RIP Board If the problem still exists, replace the main engine (MCTL P.W.B.) board.
Page 152: Options No Power Service Check
5024-001 Options No Power Service Check Action • Lower Feed Unit Note: If any paper handling options (250 Installation Cable tray or duplex unit) are installed, • Main Engine (MCTL disconnect or remove the options and P.W.B.) Board. check the base printer for correct •...
Page 153: Paper Discharge Service Check
5024-001 Paper Discharge Service Check Action • Paper Discharger Ensure the transfer drum is not damaged. Unit Do not touch the drum as hand oil • Transfer Unit damages the surface. Check the paper discharger unit for damage and replace, if necessary. If this does not correct the problem, replace the transfer unit.
Page 154: Printer No Power Service Check
5024-001 Printer No Power Service Check Action Line Voltage Note: If any paper handling options (250 tray or duplex unit) are installed, disconnect or remove the options and check the base printer for correct operation. Check the line voltage. If the line voltage is incorrect, inform the customer.
Page 155: Toner Feed Service Check
5024-001 Toner Feed Service Check Action • Toner Cartridge Check for damage of the color toner cartridge. • Developer Drive Unit • Developer Drive Check the developer drive unit gear train Gear for damage. Replace parts, if necessary. • Developer Solenoid Check the front cover unit for damage to Assembly the DE solenoid assembly.
Page 156: Waste Toner Feed Service Check
5024-001 Waste Toner Feed Service Check Action Check Installation Ensure the cleaning roller is installed. If you are receiving an error message, go “Symptom Tables” on page 2-32, for more information. Drum Cleaner Roll Inspect the cleaning roll for damage or paper.
Page 157: Paper Feed Service Checks
5024-001 Paper Feed Service Checks Printer Paper Feed Service Check Action Check for Ensure paper being used is a Recommended Paper recommended. Ensure paper does not contain humidity. Note: Disconnect the lower feed unit and the duplex unit, if installed, to help isolate a paper transport problem.
Page 158 5024-001 Action Transfer Drum Cleaner Ensure no paper is jammed in the drum cleaner. Ensure the drum cleaner is not damaged. Replace the drum cleaner, if necessary. • Fuser Unit Ensure the fuser unit is not damaged or dirty. Clean or replace, if necessary. •...
Page 159: Lower Feed Unit Paper Feed Service Check
5024-001 Lower Feed Unit Paper Feed Service Check Action Remove Options Ensure the printer works correctly, without the lower feed unit and duplex unit installed. Disconnect or remove. Check for Recommended Ensure the lower feed unit cassette Paper is using a recommended paper. Ensure the paper does not contain excessive humidity.
Page 160 5024-001 Action Lower Feed Rear Cover Check the lower feed transport roller, Assembly in the lower feed rear cover assembly, for dirt or damage and replace, if necessary. Note: This is used for the optional duplex unit. Lower Feed Paper Guides Ensure the lower feed paper guides are clean and not damaged and replace, as necessary.
Page 161: Duplex Paper Feed Service Check
5024-001 Duplex Paper Feed Service Check Action Check for Paper Ensure all paper is cleared from the printer and options. Note: See the illustration, “Lower Feed Unit Theory of Operation” on page 1-48 “” on page 1-50, for more information. Note: The printer can be checked by running a test print without the duplex being selected or connected.
Page 162 5024-001 Action • Gears / Belts Check the gears and belts in the duplex DPM1 and DPM2. • Duplex Lower Solenoid (DSOL-L) Check the duplex lower solenoid (L) • Bottom Gate assembly for damage. Ensure the bottom gate, that directs paper into the printer, is not damaged.
Page 163: Print Quality Service Checks
5024-001 Print Quality Service Checks Background Service Check The Background is smeared due to the toner spread. Action Toner Cartridge. Too small charging amount in the development process. Check Developer Bias Pole Insufficient contact of the developer roller's bias pole. Confirm whether the developer bias pole is deformed or not.
Page 164: Back Stain Service Check
5024-001 Back Stain Service Check Backside of the paper is stained. Action Fuser Unit Fuser unit: • Cleaning pad is stained • Silicone oil is low • Fuser roller and back-up roller is stained. Replace the cleaning roller. Clean the fuser roller and back-up roller.
Page 165: Banding Service Check
5024-001 Banding Service Check A banding line appears in the horizontal direction. Action OPC Belt Cartridge Transfer failure due to uneven rotational speed caused by a shock which occurs when the seam of the OPC belt passes over the cleaning blade.
Page 166: Black Line Service Check
5024-001 Black Line Service Check A fine black line appears in the printer image. Action Charger Unit Charge wire in the charger unit is contaminated. OPC Belt Cartridge OPC belt’s surface is damaged. OPC Belt Cartridge Foreign particles (paper dust, and so on) are stuck in between the cleaning blade and the OPC belt.
Page 167: Color Misregistration Service Check
5024-001 Color Misregistration Service Check Color misregistration between two colors. Action OPC Belt Cartridge OPC belt cartridge is not properly installed. Reset the OPC belt cartridge. OPC Belt Cartridge OPC belt cartridge is deformed. Replace the OPC belt cartridge. Cleaning Brush Cleaning brush is unstable during operation.
Page 168: Insufficient Fusing Service Check
5024-001 Insufficient Fusing Service Check Printed image is partially missing. Action Check Media Selection Wrong selection of print media (label or envelope and so on) from the computer. Adjust the mode of the computer side to suit the print media used. Check for Recommended Recommended paper not used.
Page 169: Insufficient Gloss Service Check
5024-001 Insufficient Gloss Service Check Gloss on the paper is not sufficient. Action Cleaning Roller Cleaning roller is stained. Replace the cleaning roller. Fuser Unit Fuser roller is deteriorated. Replace the fuser unit. Note: The fuser unit is a customer order supply.
Page 170: Jitter Service Check
5024-001 Jitter Service Check Uneven optical density appears periodically in the horizontal direction. Action Main Gear Unit Failure of main motor. • Irregular rotation of the drive motor • Failure of the gear • Variation of the OPC belt running speed (due to previous points) Belt Cartridge Failure of the OPC belt cartridge...
Page 171: Missing Image At Edge Service Check
5024-001 Missing Image at Edge Service Check The image has missing or peeling toner at the edge. Action Toner Cartridge Too small a toner mass amount and charging amount in the development process. OPC Belt Cartridge The belt is deformed and wavy. 2-91 Diagnostic Information...
Page 172: Mixed Color Image Service Check
5024-001 Mixed Color Image Service Check Mixed color image appears. Action Toner Cartridge Toner cartridge failure. • Blade pressure on the developer roller is not correct. • Blade is deformed. Ensure toner cartridge installs smoothly. Replace the toner cartridge. Front Cover Unit Restitution error in the toner cartridge.
Page 173: Mottle Service Check
5024-001 Mottle Service Check Variation of the optical density is found in the image. Action Transfer Unit Transfer unit is not in place. Ensure the transfer unit is firmly locked in place. Transfer Roller Transfer roller assembly not correct. Ensure the transfer roller is properly installed.
Page 174: Residual Image Service Check
5024-001 Residual Image Service Check Image of the preceding page appears on every other page. Action Cleaning Brush Cleaning brush failure. Ensure proper installation of the drum cleaner. Drum Cleaner Drum cleaner bias pole contact failure. Clean or replace. High Voltage Unit DC high voltage unit failure.
Page 175: Ribbing Service Check
5024-001 Ribbing Service Check Light print occurs in the right or left side of the image. Action Check That Printer is Level Table printer is sitting on is slightly tilted. Tilt should be less than 1/2 inch. Confirm the printer table is large enough and the printer is level.
Page 176: Toner Drop Service Check
5024-001 Toner Drop Service Check A toner spot stain on the paper is caused by the toner dropping within the printer engine. Action Waste Toner Feeder Toner drops on the transfer drum due to a breakdown of the waste toner feeder drum cleaner. •...
Page 177: Vertical Line Service Check
5024-001 Vertical Line Service Check A vertical line appears in the printed image. Action Transfer Drum Foreign particles (dust and so on) adhere to the parts located around the transfer drum, and consequently contact the toner image on the transfer drum. Discharger Unit Clean the paper discharger unit.
Page 178: Vertical Staggering Image Service Check
5024-001 Vertical Staggering Image Service Check Printed image staggers in the vertical direction. Action Check for Vibrations Shock or vibrations to the printer. Optical Unit (Printhead) Optical unit failure caused by vibration from the scanner motor rotation. 2-98 Service Manual...
Page 179: Vertical White Band Service Check
5024-001 Vertical White Band Service Check White band appears in the vertical direction of the printed image. Action Transfer Drum Silicone oil adhering to the transfer drum. Wipe off the oil adhering to the transfer unit and its perimeter. Replace the transfer drum. Toner Cartridge If the oil adhesion is excessive, replace the belt cartridge, cleaning...
Page 180: White Band Service Check
5024-001 White Band Service Check A white banding line appears, in the horizontal direction, causing a missing image. Action Check Transfer Unit Transfer unit installation failure and deformation of the transfer roller. Ensure the transfer unit is properly installed and locked on both sides. Transfer Roller Contact failure on the transfer roller bias pole.
Page 181: White Line I Service Check
5024-001 White Line I Service Check Vertical white line appears in a specific color area when test-printed in the four color mode (stripe mode). Action Developer Roller - • Foreign particles adhere to Toner Cartridge developer roller in a specific color. •...
Page 182: White Line Ii Service Check
5024-001 White Line II Service Check Vertical white line appears from the leading edge to the trailing edge of the printed image. Action Optical Unit (Printhead) Clean the dust-proof glass. Dust-proof glass in the optical unit is smeared with toner or foreign particles.
Page 183: White Spot / Black Spot Service Check
5024-001 White Spot / Black Spot Service Check A white spot and black spot appears on the paper. Action OPC Belt Cartridge Foreign particles adhering to the OPC belt or transfer drum. Remove the belt cartridge. • Lightly wipe off the foreign particles using a cotton cloth.
Page 184: White Print Service Check
5024-001 White Print Service Check Blank page (no print) is output or missing a specific color. Action Optical Unit (Printhead) Laser light path is blocked by paper or other material stuck at the opening of the optical unit. Ensure there are no foreign particles stuck at the opening of the optical unit.
Page 185: Wrinkle / Image Migration Service Check
5024-001 Wrinkle / Image Migration Service Check Banding shadows of different optical density appear due to the wrinkle, image migration and color misregistration occurring on the paper. Action Check for Recommended Paper being used is not Paper recommended for this printer. Recommended paper or fresh pack of paper.
Page 186: Spacing Table
5024-001 Spacing Table Roller Specifications Note: Out Number of Name of Roller Diameter Remarks Rotation rpm (Approx.) mm Paper Feeding Roller ø 40 74mm pitch Registration Roller ø 14 34mm pitch Transfer Roller ø 20 63mm pitch Developing Roller ø 18 41mm pitch OPC Belt Cartridge Transfer Drum...
Page 187: Diagnostic Aids
5024-001 3. Diagnostic Aids This chapter explains the tests and procedures to identify printer failures and to verify repairs have corrected the problem. The following diagnostic aids can be initiated at POR by pressing certain button sequences. These tests are also available in diagnostic mode.
Page 188: Paper Jam Sequence
5024-001 Paper Jam Sequence Go to the “Paper Jam Messages” on page 2-27, for more information. Service Manual...
Page 189 5024-001 Paper Jam 201 - Indicates media is jammed between the paper registration sensor and the paper exit sensor. • Open the rear cover to access the area of the paper jam. Notice the location of the paper jam. • Determine if media jammed prior to activating the paper feed sensor in the printer.
Page 190 5024-001 Paper Jam 23X • 230 Duplex - Indicates that media is jammed at the top of the duplex unit. Open the top duplex door to access the jam. If the media is jamming at or over the duplex upper paper sensor, go to “230 Paper Jam”...
Page 191: Diagnostic Mode
5024-001 Diagnostic Mode To enter the diagnostic mode: 1. Turn the printer Off. 2. Press and hold the Go and Return buttons. 3. Turn the printer On. 4. Release the buttons when "Performing Self Test" displays on the operator panel. The tests display on the operator panel in the order shown: •...
Page 192: Diagnostics Menu Structure
5024-001 • Printer setup – Setting the page count – Viewing the permanent page count – Setting configuration ID • Reset counters – Reset transfer drum – Reset maintenance kit – Reset fuser – Reset fuser cleaner – Reset photo dev cart •...
Page 193: Print Registration
5024-001 Print Registration Print registration provides a method for checking and setting the print position on the page. Upon first entering the registration menu, your selections are Tray 2 left margin or top margin. Note: Tray 1 left margin is set by the manufacturer and cannot be changed.
Page 194: Print Tests
5024-001 Print Tests The purpose of the diagnostic print tests is to verify that the printer can print on media from each of the installed input options. For each input source selected, the following choices are available: Single (prints the print test page once). Continuous (continue printing the print test page until Return or Stop is pressed).
Page 195: Hardware Tests
5024-001 If single is selected, no buttons are active during printing. If continuous is selected, return or stop can be selected to cancel the test. Note: The power indicator blinks while the page is printing. Check each test page from each source to assist in print quality and paper feed problems.
Page 196: Parallel Wrap Test
5024-001 Parallel Wrap Test This test is used with a wrap plug to check operation of the parallel port hardware. Each parallel signal is tested. To run the parallel wrap test: 1. Disconnect the parallel interface cable and install the wrap plug (P/N 1319128).
Page 197: Dram Memory Test
5024-001 To run the ROM memory test: 1. Select ROM Memory Test from the menu. P and F represent the same numbers for DRAM. The power indicator blinks indicating the test is in process. The test runs continuously. 2. Press Return/Stop to exit the test. Each time the test finishes, the screen updates with the result.
Page 198: Serial Wrap Test
5024-001 Serial Wrap Test This test is used to check the operation of the serial port hardware using a wrap plug. Each signal is tested. To run the serial wrap test: 1. Disconnect the serial interface cable and install the wrap plug. 2.
Page 199: Duplex Tests
5024-001 Duplex Tests Duplex Left Margin The left margin adjust lets the user set the left margin for the duplex option so it matches the base machine left margin, for alignment purposes. It can also be used to print a page for duplex testing. To set the duplex left margin: 1.
Page 200: Device Tests
5024-001 Device Tests Quick Disk Test This test performs a non-destructive read/write on one block per track on the disk. The test reads one block on each track, saves the data, and proceeds to write and read four test patterns to the bytes in the block.
Page 201: Flash Test
5024-001 Once the test is complete, the power indicator turns On solid and a message displays. • “xxxx Bad Blocks/yyyyyy Usable” message displays if fewer than 2000 bad blocks are detected. xxxx indicates the number of bad blocks and yyyyyy indicates the number of usable blocks.
Page 202: Printer Setup
5024-001 Printer Setup Note: Defaults within this printer can be set to either U.S. or Non- U.S. Setting the Page Count This lets the servicer change the page count from the diagnostic menu. This is used whenever the engine board is replaced because this board contains the printer NVRAM memory where the page count is stored.
Page 203: Setting Configuration Id
5024-001 The serial number will be XXXXXXXX (8 digit string) Where X=A to Z, or 0 to 9. If you replace the main engine (MCTL P.W.B.) Board, the serial number needs to be identified from the serial number label on the printer.
Page 204: Parallel Strobe Adjustment
5024-001 5. When the last digit is changed, press Select to validate the Configuration ID. • If the ID is invalid then "INVALID ID" message displays on Line 2 before the ID re-displays. You have to reenter the configuration ID until a valid ID is verified. •...
Page 205: Resetting Counters
5024-001 Resetting Counters Resetting maintenance and supply counters are required after replacing the following parts during service. – Transfer drum – Maintenance kit – Fuser – Fuser cleaner – Photo developer cartridge Any other supplies can be reset in the operator supplies menu. To reset an individual counter: 1.
Page 206: Clearing The Error Log
5024-001 To view the error log: 1. Select Display Log from the error log menu. The error log displays on three screens as only four entries display at a time. 2. To move to the next screen press Menu> to move forward or <Menu to move backward.
Page 207: Exiting Diagnostic Mode
5024-001 Exiting Diagnostic Mode Select Exit Diagnostics to exit the diagnostics mode and return to normal mode. 3-21 Diagnostic Aids...
Page 208: Print Quality Test Page
Print Quality Test Page 3-22 Service Manual...
Page 209 Print Quality Test Page Diagnostic Aids 3-23...
Page 210 5024-001 3-24 Service Manual...
Page 211: Repair Information
5024-001 4. Repair Information Removal and Cleaning Precautions Observe the following precautions whenever you service the printer: • Be sure to unplug the printer from the outlet before attempting to service the printer. • To reassemble the printer, reverse the order of removal unless otherwise specified.
Page 212: Handling The Printed Circuit Boards With
5024-001 Handling the Printed Circuit Boards with MOS ICs The following precautions must be observed when handling circuit boards with MOS (Metal Oxide Semiconductor) ICs. During Transportation/Storage: • Do not remove new circuit boards from their protective conductive bags until needed. •...
Page 213: Image Belt Cartridge/Opc
5024-001 Image Belt Cartridge/OPC The following precautions must be observed when handling the image belt cartridge/OPC: During Transportation/Storage Use the specified carton whenever moving or storing the image cartridge/OPC. Handling • The PC drum in the image belt cartridge/OPC exhibits the greatest light fatigue after being exposed to strong light over an extended period of time.
Page 214: Adjustments
5024-001 Adjustments The following service adjustments are required for this printer. • Tray 2 left margin— See “Setting Tray 2 Left Margin” on page 3-7, for more information. • Top margin— See “Setting Top Margin” on page 3-7, for more information.
Page 215: Printer Removal Procedures
5024-001 Printer Removal Procedures Precautions to Take Before Maintenance Work Do not implement any operation, removal, or modification and so on, which are not presented in this manual. 1. Turn the printer power Off and unplug the power cable from the outlet prior to starting removals or checks.
Page 216: Printer Covers
5024-001 Printer Covers Service Manual...
Page 217: Upper Side Cover (L) Removal
5024-001 Upper Side Cover (L) Removal 1. Push the paper exit cover release latch to open the paper exit unit. 2. Remove the screw BT4X10 (1) of the upper side cover (L). 3. Press the top exterior of the side cover (L) to unlock the 3 interlocks on the upper side cover (L).
Page 218: Side Cover (R) Removal
5024-001 Side Cover (R) Removal 1. Pull out the front cover latch to release and open the front cover unit. 2. Open the paper exit unit. 3. Remove the screw BT4X10 (1) at the rear of the right side cover. 4.
Page 219 5024-001 7. To remove the ozone filter cover, slide the ozone filter cover away from the side cover (R). This may be done before or after removing the side cover (R) from the printer. Repair Information...
Page 220: Side Cover (L) Removal
5024-001 Side Cover (L) Removal 1. Open the paper exit unit. See “Printer Covers” on page 4-6, for more information. 2. Remove the upper side cover (L). See “Upper Side Cover (L) Removal” on page 4-7, for more information. 3. Loosen the screws BT4X10 (2). 4.
Page 221: Side F Cover (L) Removal
5024-001 Side F Cover (L) Removal 1. Open the paper exit unit and front cover. See “Printer Covers” on page 4-6, for more information. 2. Remove the upper side cover (L). See “Upper Side Cover (L) Removal” on page 4-7, for more information. 3.
Page 222: Top Cover Assembly Removal
5024-001 Top Cover Assembly Removal 1. Open the paper exit unit and front cover unit. See “Printer Covers” on page 4-6, for more information. 2. Remove the upper side cover (L). See “Upper Side Cover (L) Removal” on page 4-7, for more information. 3.
Page 223: Paper Exit Cover / Paper Exit Front Cover / Paper Exit Cover (U) Removal
5024-001 Paper Exit Cover / Paper Exit Front Cover / Paper Exit Cover (U) Removal 1. Open the paper exit unit. See “Printer Covers” on page 4-6, for more information. 2. Remove the fusing unit. See “Fuser Unit Removal” on page 4-93, for more information.
Page 224 5024-001 7. Remove the paper exit cover assembly from the paper exit unit. 4-14 Service Manual...
Page 225: Transfer Cover Removal
5024-001 Transfer Cover Removal 1. Open the transfer unit. See “Printer Covers” on page 4-6, for more information. 2. Remove the fixing screw BT4x10 (1) from the band setting of the transfer unit. 3. Holding the transfer unit horizontally, remove the set screw (1) and bracket from the left edge of the transport support.
Page 226: Rear Cover Removal
5024-001 Rear Cover Removal 1. Unplug the power cable from the printer. 2. Remove the screw BT4X10 (1) from the rear cover. Note: After installing the new rear cover, plug in the power cable. 4-16 Service Manual...
Page 227: Rear Cover (U) Removal
5024-001 Rear Cover (U) Removal 1. Open the transfer unit. See “Printer Covers” on page 4-6, for more information. 2. Unplug the power cable from the electrical outlet. 3. Remove the side cover (R). See “Side Cover (R) Removal” on page 4-8, for more information.
Page 228: Base Cover (R) Removal
5024-001 Base Cover (R) Removal 1. Remove the side cover (R). See “Side Cover (R) Removal” on page 4-8, for more information. 2. Remove the set screws BT4X10 (2) from the base cover (R). 3. Remove the base cover (R) from the base. a.
Page 229 5024-001 WARNING: • When assembling the base cover, insert the leading edge of base cover (R) into the hooks (2) provided at the bottom (left and right) of the base plate. • Have the projecting part of the base cover (R) meet the holes (2) of the base plate bottom.
Page 230: Base Cover (L) Removal
5024-001 Base Cover (L) Removal 1. Remove the side cover (L). See “Side Cover (L) Removal” on page 4-10, for more information. 2. Remove the set screws BT4X10 (2) from the base cover (L). 3. Remove the base cover (L) from the base. a.
Page 231: Cleaner Cover Removal
5024-001 • Have the projecting part of the base cover (L) meet the holes (2) of the base plate bottom. Cleaner Cover Removal 1. Open the paper exit unit. 2. Holding the knob, remove the cleaner cover. 4-21 Repair Information...
Page 232: Front Cover Removal
5024-001 Front Cover Removal 1. Open the front cover unit. 2. Remove the set screws BT4X10 (2) from the front cover. 3. Unhook the hooks (4, left and right), and remove the front cover from the front cover unit. 4-22 Service Manual...
Page 233: Printer Board Removals
5024-001 Printer Board Removals Printer Board Layout 4-23 Repair Information...
Page 234: Main Engine (Mctl P.w.b.) Board Removal
5024-001 Main Engine (MCTL P.W.B.) Board Removal 1. Remove the side cover (L). See “Side Cover (L) Removal” on page 4-10, for more information. 2. Remove the set screw TS3X6 (1) from shield cover B. 3. Disconnect all harness connectors to the main engine (MCTL P.W.B.) board (8).
Page 235 5024-001 4-25 Repair Information...
Page 236: Iod1 P.w.b. Removal
5024-001 IOD1 P.W.B. Removal 1. Remove the upper side cover (L). See “Upper Side Cover (L) Removal” on page 4-7, for more information. 2. Remove the top cover. See “Top Cover Assembly Removal” on page 4-12, for more information. 3. Remove the set screws ST3X6 (4) from the shield cover (upper).
Page 237 5024-001 After performing the reverse removal steps: 1. Reconnect the power supply cable. 2. Turn the printer On. 3. Execute the test print in service mode. See “Diagnostic Mode” on page 3-5, for more information. 4. Confirm printer operation and print quality. WARNING: When replacing the IOD1 P.W.B., use caution against electrostatic discharge.
Page 238: Iod2 P.w.b. Removal
5024-001 IOD2 P.W.B. Removal 1. Remove the side cover (R). See “Side Cover (R) Removal” on page 4-8, for more information. 2. Remove all harness connectors to the IOD2 P.W.B. (16). 3. Remove the fixing screws ST3X6 (5) from the IOD2 P.W.B. 4.
Page 239: Panel P.w.b. (Operator Control) Removal
5024-001 Panel P.W.B. (Operator Control) Removal 1. Remove the upper side cover (L). See “Side Cover (L) Removal” on page 4-10, for more information. 2. Slide the operator panel assembly to the right and lift away from the control panel base. 3.
Page 240: Power Supply Unit (Low Voltage Power Supply - Lvps) Removal
5024-001 Power Supply Unit (Low Voltage Power Supply - LVPS) Removal 1. Remove the base cover (L). See “Base Cover (L) Removal” on page 4-20, for more information. 2. Remove the side F cover (L). See “Side F Cover (L) Removal” on page 4-11, for more information.
Page 241 5024-001 21. Remove the low voltage power supply unit from the printer engine. a. Pull out the front part of the power supply. b. Remove the hook from the frame base hole. c. Remove the power supply unit from the engine. Power supply installation: 1.
Page 242 5024-001 CAUTION: The ground wire is important in securing the safety of users. Upon removal of the power supply unit, confirm that the ground wires (green and yellow) are securely connected to the part. Note: This illustration is used for both low and high voltage power supply removal.
Page 243: High Voltage Power Supply Unit (Hvu) Removal
5024-001 High Voltage Power Supply Unit (HVU) Removal 1. Remove the upper side cover (L). See “Upper Side Cover (L) Removal” on page 4-7, for more information. 2. Remove the side cover (L). See “Side Cover (L) Removal” on page 4-10, for more information.
Page 244 5024-001 CAUTION: The high voltage unit generates high voltage (5KV). You may get an electric shock, if you touch the unit while it is powered on.Therefore, turn On the unit only after having installed the side cover (L). 4-34 Service Manual...
Page 245: Erase Lamp Removal
5024-001 Erase Lamp Removal 1. Open the front cover. See “Front Cover Removal” on page 4-22, for more information. 2. Open the paper exit unit. See “Paper Exit Cover / Paper Exit Front Cover / Paper Exit Cover (U) Removal” on page 4-13, for more information.
Page 246 5024-001 WARNING: The erase lamp has directional characteristics, if installed in the wrong direction. The transfer drum may be damaged. 4-36 Service Manual...
Page 247: Motor Removals
5024-001 Motor Removals Fan / Motor Layout Name Code Function 1 Main Motor Drives the OPC belt and the paper transport system. 2 Developer Drives the toner cartridge and the Motor developing system. 3 Scanner Scans the laser beam in the optical unit. S C M Motor 4 Controller...
Page 248: Main Motor (Mm) / Bd Gear Assembly Removal
5024-001 Main Motor (MM) / BD Gear Assembly Removal 1. Remove the side cover (R). See “Side Cover (R) Removal” on page 4-8, for more information. 2. Remove the top cover assembly. See “Top Cover Assembly Removal” on page 4-12, for more information. 3.
Page 249 5024-001 Notes: 1. Assemble the main motor and BD gear assembly. 2. Install the main motor assembly to the engine frame. 3. Perform the reverse removal steps. 4-39 Repair Information...
Page 250: Main Gear Unit Removal
5024-001 Main Gear Unit Removal 1. Remove the fusing unit. 2. Remove the main motor assembly. See “Main Motor (MM) / BD Gear Assembly Removal” on page 4-38, for more information. 3. Remove the set screws ST3X6 (4) from the main drive unit. 4.
Page 251: Developer Motor (Dm) Removal
5024-001 Developer Motor (DM) Removal 1. Remove the toner cartridges. 2. Remove side cover (R). See “Side Cover (R) Removal” on page 4-8, for more information. 3. Disconnect CN1 connected to the developer motor P.W.B. 4. Remove the fixing screws F3X10 (4) from the developer motor. 5.
Page 252: Developer Drive Unit Removal
5024-001 Developer Drive Unit Removal 1. Remove the toner cartridges. 2. Remove the waste toner bottle. 3. Remove side cover (R). See “Side Cover (R) Removal” on page 4-8, for more information. 4. Remove the base cover (R). See “Base Cover (R) Removal” on page 4-18, for more information.
Page 253 5024-001 4-43 Repair Information...
Page 254: Optical Unit (Printhead Scanner Motor Assembly) Removal
5024-001 Optical Unit (Printhead Scanner Motor Assembly) Removal 1. Remove the toner cartridges. 2. Remove the OPC belt cartridge. 3. Remove cover 'C' from inside the printer. After removing the hooks (3 inside) and locks (2 front side), cover C can be pulled toward you for removal. 4.
Page 255 5024-001 6. Remove the optical unit from inside the printer. CAUTION: Laser WARNING label Notes: 1. When the optical unit meets the positioning boss, install it into the printer base. 2. Perform the reverse removal steps. 4-45 Repair Information...
Page 256 5024-001 CAUTION: 1. There is a class B laser within the optical unit. Do not attempt to disassemble the laser. 2. The optical unit is replaced as a whole unit. No adjustment is required. 3. Confirm all covers have been installed prior to any test run or operation, in order to prevent any laser radiation from occurring.
Page 257: Control Fan (3) (Ctfan) Removal
5024-001 Control Fan (3) (CTFAN) Removal 1. Remove the upper side cover (L). See “Upper Side Cover (L) Removal” on page 4-7, for more information. 2. Remove the side cover (L). See “Side Cover (L) Removal” on page 4-10, for more information. 3.
Page 258 5024-001 • Confirm that the interlock switch (top) operates properly. 4-48 Service Manual...
Page 259: Heater Fan (Htfan) Removal
5024-001 Heater Fan (HTFAN) Removal 1. Remove the paper exit cover. See “Paper Exit Cover / Paper Exit Front Cover / Paper Exit Cover (U) Removal” on page 4-13, for more information. 2. Remove the connectors to the heater fan. 3.
Page 260: Ozone Fan (Ozfan) / Ozone Duct Assembly Removal
5024-001 Ozone Fan (OZFAN) / Ozone Duct Assembly Removal 1. Remove the side cover (R). See “Side Cover (R) Removal” on page 4-8, for more information. 2. Remove the base cover (R). See “Base Cover (R) Removal” on page 4-18, for more information. 3.
Page 261 5024-001 4-51 Repair Information...
Page 262: Clutch And Solenoid Removals
5024-001 Clutch and Solenoid Removals 4-52 Service Manual...
Page 263: Clutch (Fucl, Fbcl, Recl) Removal
5024-001 Clutch (FUCL, FBCL, RECL) Removal 1. Remove the side cover (R). See “Side Cover (R) Removal” on page 4-8, for more information. 2. Remove the harness connector, of applicable clutch, from the IOD2 P.W.B. 3. Remove the washer, of applicable clutch, from the shaft. 4.
Page 264: Paper Feeder Clutch (Pclu) Removal
5024-001 Paper Feeder Clutch (PCLU) Removal 1. Remove the IOD2 P.W.B. See “IOD2 P.W.B. Removal” on page 4-28, for more information. 2. Remove the washer, of the paper feeder clutch, from the shaft. 3. Pull out the paper feeder clutch from the shaft. 4-54 Service Manual...
Page 265: Developer Clutch (Dclk, Dcly, Dclm, Dclc) Removal
5024-001 Developer Clutch (DCLK, DCLY, DCLM, DCLC) Removal 1. Remove the side cover (R). See “Side Cover (R) Removal” on page 4-8, for more information. 2. Remove IOD2 P.W.B., if necessary. See “IOD2 P.W.B. Removal” on page 4-28, for more information. 3.
Page 266 5024-001 4. Pull out the clutch from the developer drive gear. Note: This clutch is common for all four colors. 4-56 Service Manual...
Page 267: Cam Clutch (Fbcm, Trcm) Removal
5024-001 Cam Clutch (FBCM, TRCM) Removal 1. Remove the side cover (R). See “Side Cover (R) Removal” on page 4-8, for more information. 2. Remove the IOD2 P.W.B. See “IOD2 P.W.B. Removal” on page 4-28, for more information. 3. Remove the washer, of applicable cam clutch, from the shaft. 4.
Page 268: Sensor Removals
5024-001 Sensor Removals 4-58 Service Manual...
Page 269: Interlock Switch (Front) Removal
5024-001 Interlock Switch (Front) Removal 1. Remove the upper side cover (L). See “Upper Side Cover (L) Removal” on page 4-7, for more information. 2. Remove the top cover assembly. See “Top Cover Assembly Removal” on page 4-12, for more information. 3.
Page 270: Interlock Switch (Top) Removal
5024-001 Interlock Switch (Top) Removal 1. Remove the controller fan. See “Control Fan (3) (CTFAN) Removal” on page 4-47, for more information. 2. Remove the switch from the controller fan case. 4-60 Service Manual...
Page 271: Interlock Switch (Rear) Removal
5024-001 Interlock Switch (Rear) Removal 1. Remove the side cover (L). See “Side Cover (L) Removal” on page 4-10, for more information. 2. Remove the high voltage power supply unit. See “High Voltage Power Supply Unit (HVU) Removal” on page 4-33, for more information.
Page 272 5024-001 8. Remove the interlock switch from the transfer electrode base. CAUTION: Since the interlock switch is an important safety feature in this printer, confirm the interlock switch operates normally. 4-62 Service Manual...
Page 273: Paper Sensor (Paper Feeding Sensor Pt1) Removal
5024-001 Paper Sensor (Paper Feeding Sensor PT1) Removal 1. Remove the transfer unit. See “Transfer Unit Removal” on page 4-79, for more information. 2. Remove the set screws ST3X2 (2) from the paper guide (L). 3. Remove the paper guide (L). 4.
Page 274: Paper Exit Sensor (Pt2) Removal
5024-001 Paper Exit Sensor (PT2) Removal 1. Remove the paper exit unit 2. See “Paper Exit Unit / Paper Exit Roller Removal” on page 4-86, for more information. 2. Remove the set screws ST3X6 (7) from the base assembly. 3. Remove the paper sensor base from paper exit frame. 4.
Page 275: Paper Empty Sensor (Peu) / Ohp Sensor (Ohp) Removal
5024-001 Paper Empty Sensor (PEU) / OHP Sensor (OHP) Removal 1. Remove the transfer unit. See “Transfer Unit Removal” on page 4-79, for more information. 2. Remove the set screws ST3X6 (2) from the paper guide (L). 3. Remove the paper guide (L). 4.
Page 276 5024-001 WARNING: Do not remove the separator pad mounting bracket as it is positioned at the factory and cannot be adjusted. 4-66 Service Manual...
Page 277: Paper Size Sensor (Psu) Removal
5024-001 Paper Size Sensor (PSU) Removal 1. Remove the side cover (L). See “Side Cover (L) Removal” on page 4-10, for more information. 2. Remove the power supply unit. See “Power Supply Unit (Low Voltage Power Supply - LVPS) Removal” on page 4-30, for more information.
Page 278: Drum Jam Sensor (Dpj) Removal
5024-001 Drum Jam Sensor (DPJ) Removal 1. Remove the fuser unit. 2. Remove the OPC belt cartridge. 3. Remove the drum cleaner. 4. Remove the transfer drum. See “Transfer Drum Removal” on page 4-81, for more information. 5. Remove the wiring harness cover Ex and cover F. 6.
Page 279: Oil Sensor (Oil) Removal
5024-001 Oil Sensor (OIL) Removal 1. Remove the fuser unit. 2. Remove the side cover (L). See “Side Cover (L) Removal” on page 4-10, for more information. 3. Remove the side cover (L). See “Side F Cover (L) Removal” on page 4-11, for more information.
Page 280: Drum Encoder Sensor (Hpsen) Removal
5024-001 Drum Encoder Sensor (HPSEN) Removal 1. Remove the toner cartridge. 2. Remove the OPC belt cartridge. 3. Remove the drum cleaner brush. 4. Remove the fuser unit. 5. Remove the side cover (L) 2. See “Side Cover (L) Removal” on page 4-10, for more information.
Page 281 5024-001 WARNING: Do not touch the transfer drum surface with bare hands, or scratch it. 4-71 Repair Information...
Page 282: Belt Sensor (Pbs) Removal
5024-001 Belt Sensor (PBS) Removal 1. Remove the toner cartridges. 2. Remove the OPC belt cartridge. 3. Remove the top cover assembly. See “Top Cover Assembly Removal” on page 4-12, for more information. 4. Remove cleaner cover. See “Cleaner Cover Removal” on page 4-21, for more information.
Page 283: Waste Toner Sensor (Tble/Tbfl) (Waste Toner Holder Assembly) Removal
5024-001 Waste Toner Sensor (TBLE/TBFL) (Waste Toner Holder Assembly) Removal 1. Remove the side cover (R) 2. See “Side Cover (R) Removal” on page 4-8, for more information. 2. Remove the bottom cover (R) 2. See “Base Cover (R) Removal” on page 4-18, for more information.
Page 284: Toner Sensor Assembly (Tpd) / (Ttr) Removal
5024-001 Toner Sensor Assembly (TPD) / (TTR) Removal (TPD) 1. Remove the side cover (R). See “Side Cover (R) Removal” on page 4-8, for more information. 2. Remove the developer drive unit. See “Developer Drive Unit Removal” on page 4-42, for more information. 3.
Page 285 5024-001 5. Remove the toner sensor P.W.B. 4-75 Repair Information...
Page 286: Cleaning Roller Sensor (Fcs) Removal
5024-001 Cleaning Roller Sensor (FCS) Removal 1. Open the paper exit unit. 2. Remove the set screw ST3X6 (1) from the FCS case assembly. 3. Remove the FCS sensor case assembly from the paper exit unit. 4. Remove the connector, from the FCS sensor. 5.
Page 287: Paper Full Sensor (Pful) Removal
5024-001 Paper Full Sensor (PFUL) Removal 1. Remove the paper exit unit See “Paper Exit Unit / Paper Exit Roller Removal” on page 4-86, for more information. 2. Disconnect the harness from the paper full sensor. 3. Remove the paper full sensor. Notes: •...
Page 288: Toner Key Sensor (Tnk) Removal
5024-001 Toner Key Sensor (TNK) Removal 1. Remove the upper side cover (L). See “Upper Side Cover (L) Removal” on page 4-7, for more information. 2. Remove the side cover (L). See “Side Cover (L) Removal” on page 4-10, for more information. 3.
Page 289: Transfer Unit (Rollers And Drum) Removal
5024-001 Transfer Unit (Rollers and Drum) Removal Transfer Unit Removal 1. Open the transfer unit. 2. Remove the set screw BT4X10 (1) from the retainer band on the transfer unit. 3. Remove the set screw ST3X6 (1) from the fixing metal stop on the transfer unit.
Page 290: Registration Roller Removal
5024-001 Registration Roller Removal 1. Remove the transfer unit. See “Transfer Unit Removal” on page 4-79, for more information. 2. Remove the fixing washer from the roller on both sides. 3. Remove the gear from the shaft. 4. Remove the bearing on both sides. 5.
Page 291: Transfer Drum Removal
5024-001 Transfer Drum Removal 1. Remove the toner cartridges. 2. Remove the belt cartridge. 3. Remove the fuser unit. 4. Remove the cleaner cover. 5. Remove the drum cleaner. 6. Open the transfer unit. 7. Remove the top cover assembly. See “Top Cover Assembly Removal”...
Page 292 5024-001 WARNING: Do not touch the transfer drum surface with bare hands, or scratch it. 4-82 Service Manual...
Page 293: Paper Feed Roller / Separator Pad Removal
5024-001 Paper Feed Roller / Separator Pad Removal 1. Remove the paper feeding cassette. 2. Remove the transfer unit 2. See “Transfer Unit Removal” on page 4-79, for more information. 3. Remove the set screws ST3X6 (2) from the paper guide (L). 4.
Page 294: Front Cover Unit Removal
5024-001 Front Cover Unit Removal 1. Open the front cover. 2. Remove the cover C. See “Optical Unit (Printhead Scanner Motor Assembly) Removal” on page 4-44, for more information. 3. Remove the front cover. See “Front Cover Removal” on page 4-22, for more information.
Page 295 5024-001 Notes: 1. Hook the front cover unit support through the hole on the engine side. 2. Fix the support, from the rear side with the fixing screws (3, left and right side), with the front cover unit closed. 3. Open the front cover unit and install the hinge support to the frame.
Page 296: Paper Exit Unit / Paper Exit Roller Removal
5024-001 Paper Exit Unit / Paper Exit Roller Removal 1. Remove the side cover (R) and (L). See “Side Cover (R) Removal” on page 4-8 “Side Cover (L) Removal” on page 4-10, for more information. 2. Remove the rear cover and rear cover (U). See “Rear Cover Removal”...
Page 297 5024-001 16. Remove the paper exit roller from the frame. Notes: 1. Put the paper exit roller through the installation hole of the paper exit frame. 2. Put the bearing on the left and right through the paper exit roller shaft.
Page 298: Discharger Brush Removal
5024-001 Discharger Brush Removal 1. Remove the paper exit unit. See “Paper Exit Unit / Paper Exit Roller Removal” on page 4-86, for more information. 2. Remove the paper exit front cover. See “Paper Exit Cover / Paper Exit Front Cover / Paper Exit Cover (U) Removal” on page 4-13, for more information.
Page 299: Waste Toner Feeder (U) (Stay 'A' Assembly) Removal
5024-001 Waste Toner Feeder (U) (Stay 'A' Assembly) Removal 1. Remove the OPC belt cartridge. 2. Remove the toner cartridges. 3. Remove the drum cleaner. 4. Remove the side upper cover (L). See “Upper Side Cover (L) Removal” on page 4-7, for more information.
Page 300: Fuser Connector Removal
5024-001 Fuser Connector Removal 1. Remove the fuser unit. See “Fuser Unit Removal” on page 4-93, for more information. 2. Remove the side cover (L). See “Side Cover (L) Removal” on page 4-10, for more information. 3. Remove the shield case A assembly. See “Power Supply Unit (Low Voltage Power Supply - LVPS) Removal”...
Page 301: Waste Toner Feeder (L) Removal
5024-001 Waste Toner Feeder (L) Removal 1. Remove the toner cartridges. 2. Remove the OPC belt cartridge. 3. Remove the side cover (R). See “Side Cover (R) Removal” on page 4-8, for more information. 4. Remove the IOD2 P.W.B. See “IOD2 P.W.B.
Page 302 5024-001 14. Pull out the toner drive assembly (waste toner feeder (L)). Note: Install the toner drive assembly to the engine frame. 4-92 Service Manual...
Page 303: Fuser Unit Removal
5024-001 Fuser Unit Removal CAUTION: 1. The fuser unit consists of important parts in terms of safety. Therefore, replacement of parts or removal and maintenance work should be done at the appropriate facilities by skillful service personnel acquainted with electrical safety. After the assembling work, the product safety should be reconfirmed.
Page 304: Lower Feeder Unit (Lfu) Removals
5024-001 Lower Feeder Unit (LFU) Removals 4-94 Service Manual...
Page 305: Lower Feeder Unit Top Cover (R) Removal
5024-001 Lower Feeder Unit Top Cover (R) Removal 1. Remove the set screws ST4X8 (2) and BT4X10 (3) from the LFU top cover (R). 2. Remove the set screw ST3X6 (1) from the GND contacts (2). 3. Remove the LFU top cover (R). 4-95 Repair Information...
Page 306: Lower Feeder Unit Top Cover (L) Removal
5024-001 Lower Feeder Unit Top Cover (L) Removal 1. Remove the set screws ST4X8 (2) and BT4X10 (3) in the LFU top cover (L). 2. Remove the set screw ST3X6 (1) of the GND contacts (2). 3. Remove the LFU top cover (L). 4-96 Service Manual...
Page 307: Lower Feeder Unit Front Top Cover Removal
5024-001 Lower Feeder Unit Front Top Cover Removal 1. Remove the LFU top cover (R). See “Lower Feeder Unit Top Cover (R) Removal” on page 4-95, for more information. 2. Remove the LFU top cover (L). See “Lower Feeder Unit Top Cover (L) Removal”...
Page 308: Lower Feeder Unit Base Cover (R) Removal
5024-001 Lower Feeder Unit Base Cover (R) Removal 1. Remove the LFU top cover (R). See “Lower Feeder Unit Top Cover (R) Removal” on page 4-95, for more information. 2. Remove the set screws ST4X8 (2) from the LFU base cover (R).
Page 309: Lower Feeder Unit Base Cover (L) Removal
5024-001 Lower Feeder Unit Base Cover (L) Removal 1. Remove the LFU top cover (L) See “Lower Feeder Unit Top Cover (L) Removal” on page 4-96, for more information. 2. Remove the set screws ST4X8 (2) from the LFU base cover (L). 3.
Page 310: Lower Feeder Unit Paper Sensor Removal
5024-001 Lower Feeder Unit Paper Sensor Removal 1. Remove the set screws ST3X6 (4) from the LFU rear cover assembly. 2. Remove the set screws ST3X6 (2) from the LFU paper guide (UL) assembly. 3. Disconnect the paper sensor. 4. Remove the paper sensor from the LFU paper guide (UL) assembly (snap in).
Page 311: Lower Feeder Unit Paper Size Sensor (Sl-Ps -A57 P.w.b. Assembly) Removal
5024-001 Lower Feeder Unit Paper Size Sensor (SL-PS -A57 P.W.B. Assembly) Removal 1. Remove the LFU base cover (L). See “Lower Feeder Unit Base Cover (L) Removal” on page 4-99, for more information. 2. Remove the harness connector to the paper size sensor. 3.
Page 312: Lower Feeder Unit Paper Feed Clutch (Pkcll) / Lf Clutch (Dpkcl) Removal
5024-001 Lower Feeder Unit Paper Feed Clutch (PKCLL) / LF Clutch (DPKCL) Removal 1. Remove the LFU top cover (R). See “Lower Feeder Unit Top Cover (R) Removal” on page 4-95, for more information. 2. Remove the LFU base cover (R). See “Lower Feeder Unit Base Cover (R) Removal”...
Page 313: Lower Feeder Unit Paper Feeder Rolling / Separator Pad Removal
5024-001 Lower Feeder Unit Paper Feeder Rolling / Separator Pad Removal 1. Remove the LFU set screws ST3X6 (4) from the rear cover assembly. 2. Remove the LFU set screws ST3X6 (2) from the paper guide (UL) assembly. 3. Slide the paper feeder roller off the shaft. 4.
Page 314: Duplex Cover And Paper Guide Removals
5024-001 Duplex Cover and Paper Guide Removals 4-104 Service Manual...
Page 315: Duplex Side Cover Low (R) Removal
5024-001 Duplex Side Cover Low (R) Removal 1. Remove the set screws TS4x7 (2) from the side cover low (R). 2. Remove the side cover low (R) from the duplex unit. 4-105 Repair Information...
Page 316: Duplex Side Cover Low (L) Removal
5024-001 Duplex Side Cover Low (L) Removal 1. Remove the set screws ST4X7 (2) from the side cover low (L). 2. Remove the side cover low (L) from the duplex unit. 4-106 Service Manual...
Page 317: Duplex Cover Top (R) Removal
5024-001 Duplex Cover Top (R) Removal 1. Remove the set screws ST4X7 (2) from the cover top (R). 2. Remove the cover top (R) from the duplex unit. 4-107 Repair Information...
Page 318: Duplex Cover Top (L) Removal
5024-001 Duplex Cover Top (L) Removal 1. Remove the side cover low (L). See,“Duplex Side Cover Low (L) Removal” on page 4-106, for more information. 2. Remove the set screws ST4X7 (2) from the cover top (L). 3. Remove the cover top (L) from the duplex unit. 4-108 Service Manual...
Page 319: Duplex Cover Top (B) Assembly Removal
5024-001 Duplex Cover Top (B) Assembly Removal Note: Includes 4 pieces of the guide rollers. 1. Remove the side cover low (R). See,“Duplex Side Cover Low (R) Removal” on page 4-105, for more information. 2. Remove the cover top (R). See “Duplex Cover Top (R) Removal”...
Page 320 5024-001 4-110 Service Manual...
Page 321: Duplex Cover Top (C) Assembly Removal
5024-001 Duplex Cover Top (C) Assembly Removal Note: Includes 4 pieces of the guide rollers. 1. Remove the side cover low (R) / (L) and the cover top (R) / (L). “Duplex Side Cover Low (R) Removal” on page 4-105, “Duplex Side Cover Low (L) Removal”...
Page 322: Duplex Cover Low (B) Assembly Removal
5024-001 Duplex Cover Low (B) Assembly Removal Note: Includes 4 pieces (guide rollers, handle, and lock lever). 1. Open the cover low (B). 2. Remove the set screws TS3X8 (4) from the cover low (B) assembly. 3. Remove the cover low (B) assembly from the hinged metal fixture.
Page 323: Duplex Bottom Cover Assembly Removal
5024-001 Duplex Bottom Cover Assembly Removal 1. Remove the bottom unit. See “Duplex Paper Top Assembly (D-Top Unit and D-Lower Unit) Removal” on page 4-121, for more information. 2. Remove the cover low (B) assembly. See “Duplex Cover Low (B) Assembly Removal” on page 4-112, for more information.
Page 324 5024-001 4-114 Service Manual...
Page 325: Duplex Paper Guide Rvs Unit Removal
5024-001 Duplex Paper Guide RVS Unit Removal 1. Remove the cover low (R and L). See “Duplex Side Cover Low (R) Removal” on page 4-105 “Duplex Side Cover Low (L) Removal” on page 4-106, for more information. 2. Remove the paper guide RVS IN. See “Duplex Paper Guide RVS IN Removal”...
Page 326 5024-001 4-116 Service Manual...
Page 327: Duplex Paper Guide Rvs In Removal
5024-001 Duplex Paper Guide RVS IN Removal 1. Open the cover low (B). 2. Open the paper guide RVS unit. 3. Remove the support part of the paper guide RVS IN from the shaft. 4. Remove the paper guide RVS IN. 4-117 Repair Information...
Page 328 5024-001 4-118 Service Manual...
Page 329: Duplex Paper Guide Bottom Removal
5024-001 Duplex Paper Guide Bottom Removal 1. Open the cover low (B). 2. Open the paper guide RVS unit. 3. Remove the set screw ST3X6 (1) from the paper guide bottom. 4. Remove the paper guide bottom. 4-119 Repair Information...
Page 330 5024-001 5. Remove the harness connector. Paper Guide Bottom Notes: 1. Install the sensor (PT4) to the new paper guide bottom. 2. Install the new paper guide bottom. 3. Install the harness cover. 4-120 Service Manual...
Page 331: Duplex Paper Top Assembly (D-Top Unit And D-Lower Unit) Removal
5024-001 Duplex Paper Top Assembly (D-Top Unit and D-Lower Unit) Removal 1. Remove cover low (R and L). See “Duplex Side Cover Low (R) Removal” on page 4-105 “Duplex Side Cover Low (L) Removal” on page 4-106, for more information. 2.
Page 332 5024-001 4-122 Service Manual...
Page 333: Duplex Paper Guide Top Assembly Removal
5024-001 Duplex Paper Guide Top Assembly Removal 1. Remove the cover top (R) and (L) from the D-top unit. See “Duplex Cover Top (R) Removal” on page 4-107, and “Duplex Cover Top (L) Removal” on page 4-108, for more information. 2.
Page 334: Duplex Print P.w.b. Removal
5024-001 Duplex Print P.W.B. Removal 1. Remove the paper guide bottom. See “Duplex Paper Guide Bottom Removal” on page 4-119, for more information. 2. Remove all the connectors to the duplex P.W.B. 3. Remove the set screws ST3X5 (4) from the duplex P.W.B. 4.
Page 335 5024-001 4-125 Repair Information...
Page 336: Duplex Relay P.w.b. Removal
5024-001 Duplex Relay P.W.B. Removal 1. Remove the paper guide bottom. See “Duplex Paper Guide Bottom Removal” on page 4-119, for more information. 2. Remove the connectors from the relay P.W.B. 3. Remove the set screws ST3X5 (4) from the relay P.W.B. 4.
Page 337 5024-001 Note: Install the new relay P.W.B. to the base. 4-127 Repair Information...
Page 338: Duplex Motor 1 Removal
5024-001 Duplex Motor 1 Removal 1. Remove the paper guide bottom and the side cover low (R). “Duplex Paper Guide Bottom Removal” on page 4-119 “Duplex Side Cover Low (R) Removal” on page 4-105, for more information. 2. Remove the motor harness connector CN5 from the relay P.W.B.
Page 339: Duplex Motor 2 Removal
5024-001 Duplex Motor 2 Removal 1. Remove paper guide bottom and the side cover low (L). See “Duplex Paper Guide Bottom Removal” on page 4-119 “Duplex Side Cover Low (L) Removal” on page 4-106, for more information. 2. Remove the motor harness connector CN7 from the relay P.W.B.
Page 340 5024-001 4-130 Service Manual...
Page 341: Duplex Fan Motor Removal
5024-001 Duplex Fan Motor Removal 1. Remove the side cover low (L). See “Duplex Side Cover Low (L) Removal” on page 4-106, for more information. 2. Remove the cover top (L). See “Duplex Cover Top (L) Removal” on page 4-108, for more information. 3.
Page 342: Duplex Solenoid (U) Assembly Removal
5024-001 Duplex Solenoid (U) Assembly Removal 1. Remove the side cover low (R). See “Duplex Side Cover Low (R) Removal” on page 4-105, for more information. 2. Remove the cover top (R). See “Duplex Cover Top (R) Removal” on page 4-107, for more information.
Page 343: Duplex Solenoid (L) Assembly Removal
5024-001 Duplex Solenoid (L) Assembly Removal 1. Remove the paper guide bottom. See “Duplex Paper Guide Bottom Removal” on page 4-119, for more information. 2. Remove the harness cover. 3. Remove the solenoid (L) harness connector CN3 from the relay P.W.B.
Page 344: Duplex Interlock Switch (D-Sw1, D-Sw2) Removal
5024-001 Duplex Interlock Switch (D-SW1, D-SW2) Removal 1. Remove the side cover low (R). See “Duplex Side Cover Low (R) Removal” on page 4-105, for more information. 2. Remove the set screw ST3X14 (1) from the interlock switch. 3. Remove the harness connector to the interlock switch. •...
Page 345: Duplex Interlock Switch (D-Sw3, D-Sw4) Removal
5024-001 Duplex Interlock Switch (D-SW3, D-SW4) Removal 1. Remove the side cover low (L). See “Duplex Side Cover Low (L) Removal” on page 4-106, for more information. 2. Remove the set screw ST3X12 (1) from the interlock switch (R). 3. Remove the harness connector to the interlock switch (R). •...
Page 346: Duplex D Paper Sensor (Pt5) Removal
5024-001 Duplex D Paper Sensor (PT5) Removal 1. Open the cover low (B). 2. Open the paper guide RVS IN. 3. Remove the set screw TS3X8 (1) from the cover low. 4. Remove the sensor cover. 5. Remove the PT5 from the paper guide RVS unit. Note: Prior to replacement, make sure the connection is made.
Page 347: Duplex Paper Sensor Low (Pt4) Removal
5024-001 Duplex Paper Sensor Low (PT4) Removal 1. Remove the paper guide bottom. See “Duplex Paper Guide Bottom Removal” on page 4-119, for more information. 2. Remove the paper guide bottom assembly from the PT4 sensor. 4-137 Repair Information...
Page 348 5024-001 Note: Install the new PT4 sensor to the paper sensor bottom. 4-138 Service Manual...
Page 349: Locations
5024-001 5. Locations Printer Locations...
Page 350 5024-001 Part Name Description Top Cover The upper enclosure and also the exit paper tray. Operator Panel Displays a status of printer operation. Front Cover Printer front enclosure, to be opened when replacing a toner cartridge or waste toner pack. Paper Exit Cover Exit tray for printed paper onto the top cover.
Page 351: Options
5024-001 Options Locations...
Page 352: Electronic Components
5024-001 Electronic Components Sensor Locations Name Code Function Paper Size Sensor Photo sensor to detect the paper size. Paper feed Sensor Photo sensor to detect whether paper is fed from the paper drawer. Paper Exit Sensor Photo sensor to detect whether paper is exited from the paper exit unit.
Page 353 5024-001 Name Code Function Oil Sensor Photo sensor to detect whether the fuser unit oil is empty or not. OHP Sensor Photo sensor to detect whether paper is loaded in the paper drawer. Drum Paper Jam Photo sensor to detect whether paper is Sensor winding around the transfer drum.
Page 354: Printer Circuit Board Locations
5024-001 Printer Circuit Board Locations Name Function Main Engine (MCTL Controls the processes of the printer: P.W.B.) Board Fuser Temperature control Laser output control Operator panel indication Toner empty sensing control Error processing control Interface control Panel P.W.B. Displays the printer operation status and supports the manual input switch.
Page 355 5024-001 Name Function IOD1 P.W.B. Relays the signals between the controlled parts and main engine (MCTL P.W.B.) board, and drives the controlled parts. IDO2 P.W.B. Relays the signals between the controlled parts, the main engine (MCTL P.W.B.) board, and drives the controlled parts.
Page 356: Fan/Motor Locations
5024-001 Fan/Motor Locations Name Code Function Main Motor Drives the OPC belt and the paper transport system. Developer Drives the toner cartridge and the Motor developing system. Scanner Motor Scans the laser beam in the optical unit S C M Controller Fan Exhausts the heat from the power CTLFAN...
Page 357: Solenoid/Clutch Locations
5024-001 Solenoid/Clutch Locations Name Code Function Paper Feed Clutch Feeds paper by coupling the feed roller to the main gear unit at the time of a paper feed. PCLU The paper feed clutch is located behind the IDO2 board. Registration Clutch Transports paper by coupling the registration roller to the main gear unit as synchronized with the rotation of the...
Page 358 5024-001 Name Code Function Cleaner Clutch Drives the brush of the drum cleaner by FBCL coupling the cleaner clutch to the main gear unit at the time of the drum cleaning. ~ 8 Developer Drives the cartridge by coupling the Clutch selected toner cartridge to the developer (Y,M,C,K)
Page 359: Symbol And Part Name Table
5024-001 Symbol and Part Name Table Symbol Part Name Back-up roller CTFAN Control fan motor (cooling fan Developer motor Drum jam sensor DSW1 Interlock switch (front) DSW2 Interlock switch (top) DSW3 Interlock switch (rear) Duplex unit DCLK DCLY Developer clutch (K.Y.M.C.) DCLM DCLC Erase lamp...
Page 360 5024-001 Symbol Part Name Laser drive unit P.W.B. Lower paper feeding unit LVPS Power supply unit MCTL Main Engine (MCTL P.W.B.) board Main motor OHP sensor Oil sensor Optical unit Optical unit OZFAN Ozone fan motor (cooling fan PANEL Operator panel P.W.B. Belt sensor PCLU Upper paper feeding clutch...
Page 361: Wiring Diagram / Cable Harness Reference
5024-001 Symbol Part Name Themistor Toner key sensor Toner empty sensor TRCM Transfer cam clutch Wiring Diagram / Cable Harness Reference Notes: – Cables are marked, in large circles, with the # sign. – Connectors are marked, in small circles, with number reference.
Page 362 5024-001 Note: See foldout, in the back of this manual, for an exploded view of this diagram. 5-14 Service Manual...
Page 363: Controller Rip Card
5024-001 Controller RIP Card 5-15 Locations...
Page 364: Main Engine (Mctl P.w.b.) Board
5024-001 Main Engine (MCTL P.W.B.) Board 5-16 Service Manual...
Page 365: Iod1 P.w.b. Board
5024-001 IOD1 P.W.B. Board 5-17 Locations...
Page 366: Iod2 P.w.b. Board
5024-001 IOD2 P.W.B. Board 5-18 Service Manual...
Page 367: Low Voltage Power Supply (Lvps) Board
5024-001 Low Voltage Power Supply (LVPS) Board 5-19 Locations...
Page 368: High Voltage Unit (Hvu) Board
5024-001 High Voltage Unit (HVU) Board 5-20 Service Manual...
Page 369: Fuser Unit (Lvps) Board
5024-001 Fuser Unit (LVPS) Board 5-21 Locations...
Page 370: Connector Locations For Options
5024-001 Connector Locations for Options Lower Feed Unit Option 5-22 Service Manual...
Page 371: Duplex Unit
5024-001 Duplex Unit 5-23 Locations...
Page 372: Connector Pin Assignments
5024-001 Connector Pin Assignments Location 1 IOD1 P.W.B. DCN2—Power Supply Unit ACN1 Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name +5V-1 DCOFF2-P +5V-1 SGND +5V-D SGND +5V-D SGND ACSYNC-N SGND +24V DCOFF1-P +5V-1R ACOFF-P HON-N...
Page 373: Location 11
5024-001 Location 2 IOD1 P.W.B. DCN17—High Voltage Unit BCN1 Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name +24V-1 PGND AVCERR PGND ACVON-N PWMON-N CHVON-N CHVERR CBVPWM-N THVRON-N DBV(MC)PWM-N THVPWM-N DBV(KY)PWM-N THV-1 FCBVPMN-N (Reserved) AC_DCON-N (Reserved)
Page 374: Location 14
5024-001 Location 5 Main Engine (MCTL P.W.B.) Board (1CN)—IOD1 P.W.B. DCN1 Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name I/OAD2 DMON-N I/OAD1 DCOFF1-P I/OAD0 DMCLK I/ODATA3 ACVON-N I/OADATA2 CHVON-N I/OADATA1 PWMON-N I/OADATA0 CBVPWM-N LEDON-N DBV(MC)PWM-N...
Page 375: Location 15
5024-001 Pin No. Signal Name Pin No. Signal Name +5V-1 PGND +5V-1 +24V-1 +5V-1D +24V-1 Location 6 IOD1 P.W.B. DCN10—IOD2 P.W.B. ECN2 Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name +24V-1 +24V-1 +24V-1 PGND PGND...
Page 376: Location 16
5024-001 Location 7 IOD1 P.W.B. DCN4—Upper Paper Empty Sensor (PSU) • Paper Feed Sensor (PT1) • Drum Encoder Sensor (HPSEN) • OPH Sensor (OPH) Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name +5V-S HPSEN-N SGND...
Page 377 5024-001 Location 9 IOD1 P.W.B. DCN7—Toner Empty Sensor (Y,M,C,K) Erase Lamp Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name TLES(K)-P TLES(Y)-P TLES(M)-P TLES(C)-P TLES-G SGND LEDON-P TLESCHK SGND +24V-1 ELON-N Location 10 IOD1 P.W.B.
Page 378 5024-001 Location 11 IOD1 P.W.B. DCN8—Lower Paper Feeder Unit Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name +24V-1 PKCLL1ON-N FDCLL1ON-N PSL1 PSL2 PSL3 PSCST1 PEL1-P OCST1-N +5V-D SGND +24V-1 (Reserved) 24+5V-D SGND SGND 5-30 Service Manual...
Page 379 5024-001 Location 12 IOD1 P.W.B. EDCN14—Heater Fan (HTFAN) • Paper Exit Sensor (PT2) • Cleaning Roll Sensor (CSR) • Paper Full Sensor (PFUL) Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name +5V-S PT2-N SGND +5V-S...
Page 380 5024-001 Location 14 Main Engine (MCTL P.W.B.) Board 12CN—IOD2 ECN1 Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name DCL(C)ON-P DCL(M)ON-P DCL(Y)ON-P DCL(K)ON-P PSL(KY)ON-P PSL(MC)ON-P MMCLK MMON-N MMREV-N MMENC RECLON-P AHUMB ISCK IDATA ILOAD FBCLON-P FBSLON-P...
Page 381: Location 18
5024-001 Location 16 IOD2 P.W.B. ECN15—Developer Clutch (M) Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name +24V-1 DCL(M)ON-N Location 17 IOD2 P.W.B. ECN14—Developer Clutch (Y) Note: See Wiring Diagram (small circle) for location. Pin No.
Page 382: Location 19
5024-001 Location 19 IOD2 P.W.B. ECN5—Home Position Sensor 1 • Home Position Sensor 2 • Developer Cam Clutch (YM) • Developer Cam Clutch (YM) • Developer Cam Clutch (CK) Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No.
Page 383: Location 21
5024-001 Location 21 IOD2 P.W.B. ECN11—Cleaner Clutch Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name +24V-1 FUCLON-N Location 22 IOD2 P.W.B. ECN3—Ozone Fan Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No.
Page 384: Location 24
5024-001 Location 24 IOD2 P.W.B. ECN17—Waste Toner Sensor Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name TBFL1-N SGND WTLEDON SGND Location 25 IOD2 P.W.B. ECN10—Cleaner Cam Clutch Note: See Wiring Diagram (small circle) for location. Pin No.
Page 385: Location 27
5024-001 Location 27 IOD2 P.W.B. ECN6—Paper Feeding Clutch Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name +24V-1 PKCLU1ON-N Location 28 IOD2 P.W.B. ECN12—Main Motor Note: See Wiring Diagram (small circle) for location. Pin No.
Page 386: Location 29
5024-001 Location 29 IOD1 P.W.B. DCN9—Developer Motor Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name DMRDY-N DMON-N DMCLK PGND PGND +24V-1 +24V-1 SGND +5V-1 Location 30 Main Engine (MCTL P.W.B.) Board I3CN—IOD1 P.W.B. DCN13 Note: See Wiring Diagram (small circle) for location.
Page 387: Location 31
5024-001 Location 31 Main Engine (MCTL P.W.B.) Board LCN—LDU P.W.B.) Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name +5V-1R LDREF2 LDREF3 +5V-1 LDREF1 LDREF0 LREADY LCONT2 LCONT1 VIDEO-N LDREF4 BDT-P BDT-N SGND SGND SCMCLK SCMRDY-N...
Page 388: Location 32
5024-001 Location 32 Power Supply Unit ACN3—(MCTL P.W.B.) POCN Note: See Wiring Diagram (small circle) for location. Signal Interface Name SWRUS-P Power supply (open) +5V-2 +5V-2 Output +5V-2D +5V-2D Output +5V-2D +5V-2D Output signal ground +24VDO-N +24V Door open SGND Signal ground (+5V type ground) SGND Signal ground (+5V type ground)
Page 389: Location 35
5024-001 Location 35 Main Engine (MCTL P.W.B.) Board P2CN—PANEL P.W.B. Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name I2C - DATA +5V-1 I2-CLK FRIRQP-N Location 36 Main Engine (MCTL P.W.B.) Board DPCN—Duplex Unit CNDUP Note: See Wiring Diagram (small circle) for location.
Page 390 5024-001 Location 37 Power Supply Unit ACN4—Duplex Unit CNDUP Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name +5V-1 +5V-D SGND +24V-2 +24V-2 PGND PGND Location 38 IOD1 P.W.B. DCN15—Toner Key Sensor Note: See Wiring Diagram (small circle) for location. Pin No.
Page 391: Location 37
5024-001 Location 39 Printer CNDUP—Duplex Unit Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name D-COMMAND SGND DUMBUSY2-N SGND D-STATUS SGND Reserved DUPCHK-N DUMBUSY1-N PT-1 DUPRES-N SGND PGND PGND +24V-2 +24V-2 +5V-D SGND +5V-1 5-43 Locations...
Page 392: Location 38
5024-001 Location 40 Fuser Unit Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name FUCHKGND FUTEMP Location 41 Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name FUTEMP FUCHKGND 5-44...
Page 393: Location 42
5024-001 Location 42 Main Engine (MCTL P.W.B.) Board—FUCN1 Fuser Unit Note: See Wiring Diagram (small circle) for location. Pin No. Signal Name Pin No. Signal Name FUTEMP FUCHKGND 5-45 Locations...
Page 394: Printer Cables
5024-001 Printer Cables Cable 1 Connector Assignments Cable 2 Connector Assignments 5-46 Service Manual...
Page 395: Cable 3 Connector Assignments
5024-001 Cable 3 Connector Assignments 5-47 Locations...
Page 396: Cable 4 Connector Assignments
5024-001 Cable 4 Connector Assignments 5-48 Service Manual...
Page 397: Cable 5 Connector Assignments
5024-001 Cable 5 Connector Assignments Cable 6 Connector Assignments Cable 7 Connector Assignments 5-49 Locations...
Page 398: Cable 8 Connector Assignments
5024-001 Cable 8 Connector Assignments Cable 9 Connector Assignments Cable 10 Connector Assignments 5-50 Service Manual...
Page 399: Cable 11 Connector Assignments
5024-001 Cable 11 Connector Assignments Cable 12 Connector Assignments Cable 13 Connector Assignments 5-51 Locations...
Page 400 5024-001 5-52 Service Manual...
Page 401: Preventive Maintenance
• Damaged, missing, or altered covers, especially the top covers and power supply cover. • Possible safety exposure from any non-Lexmark attachments. Service Precautions • Make sure any ground wires are secured to the frame with lock washers or lock washer equipped screws.
Page 402: Lubrication Specifications
5024-001 Lubrication Specifications There are no lubrication requirements for the printer or options. Note: For supplies maintenance, see the Operator Manual. Service Manual...
Page 403: Printer Supplies And Maintenance Schedules
5024-001 Printer Supplies and Maintenance Schedules Supply Name Description Schedule Fuser Cleaner Roller clean fuser roll 12,000 pages Roller Fuser Fuses toner to media (consists 40,000 pages Maintenance Kit of fuser and air filter). Oil Bottle Kit Oil for fuser (consists of oil 12,000 pages bottle and fuser cleaning roll).
Page 404: Cleaning For Maintenance
5024-001 Cleaning for Maintenance The following areas need maintenance cleaning when parts are replaced. • Registration roller • Transfer roller • Paper discharger • Belt cartridge • Dust proof glass of optical unit • Printer interior Note: The lower feed and duplex units do not need preventive maintenance.
Page 405: Parts Catalog
5024-001 7. Parts Catalog How to Use this Parts Catalog • SIMILAR ASSEMBLIES: If two assemblies contain a majority of identical parts, they are shown on the same list. Common parts are shown by one index number. Parts peculiar to one or the other of the assemblies are listed separately and identified by description.
Page 406 Assembly 1: Parts Catalog...
Page 407 5024-001 Assembly 1: Part Units Description Number Toner Cartridge -Y 1 - 1 (Supply, customer order only) Toner Cartridge -M (Supply, customer order only) Toner Cartridge -C (Supply, customer order only) Toner Cartridge -K (Supply, customer order only) OPC Belt Cartridge (Supply, customer order only) Fuser Oil Bottle (Supply, customer order only)
Page 408 Assembly 1 (cont.): Parts Catalog...
Page 409: Assembly 1
5024-001 Assembly 1 (cont.): Part Units Description Number Power Cord, HV, Brazil 1 - 16 1339520 Power Cord, HV, Chili 1339524 Power Cord, HV, UK, Ireland 1339528 Power Cord, HV, Austria, Belgium, EURO English, Finland, France, Germany, 1339529 Greece, Netherlands, Norway, Poland, Portugal, Russia, Slovakia/Czech/Hungary Spain, Sweden, Turkey Power Cord, HV, Israel...
Page 410 Assembly 2: Parts Catalog...
Page 411: Assembly 2
5024-001 Assembly 2: Part Number Units Description Top Cover Assembly (includes 35) 2 - 1 12G7015 Side Cover (R) 12G7016 Side Cover (L) 12G7017 Upper Side Cover (L) 12G7018 Front Cover 12G7019 Paper Exit Unit Cover (includes 13) 12G7020 Paper Exit Front Cover 12G7021 Base Cover (R) 12G7022...
Page 412 Assembly 2 (cont.): Parts Catalog...
Page 413 5024-001 Assembly 2 (cont.): Part Number Units Description Paper Exit Roller 2 - 27 12G7039 Paper sensor (PFUL) 12G7037 Operator Panel Assembly 12G7360 Paper Exit Gear Z19 12G7041 FCS Cover Assembly 12G7042 Paper Size Sensor 12G7043 BC Terminal 2 12G7044 Control Panel Base 12G7161 Paper Exit Button...
Page 414 Assembly 2 (cont.): 7-10 Parts Catalog...
Page 415 5024-001 Assembly 2 (cont.): Part Number Units Description DC Guide L 2 - 50 12G7177 DC Guide (R) 12G7019 Waste Toner U Spring 12G7179 TR Terminal Base Assembly 12G7180 Interlock Switch 12G7070 Parts Packet, Screws 12G7341 Parts Packet, Cable Clamps, Retainers, 12G7340 Miscellaneous Note: Reference the foldout wiring diagram, in the back of this...
Page 416 Assembly 3: 7-12 Parts Catalog...
Page 417: Assembly 3
5024-001 Assembly 3: Part Number Units Description Paper Feeding Clutch (PCLU) 3 - 1 12G7045 Registration Clutch (RECL) 12G7046 Fuser Clutch (FUCL) 12G7047 Developer Clutch 12G7048 Transfer Cam Clutch (TRCM) 12G7049 Cleaner Cam Clutch (FBCM) 12G7049 Cleaner Clutch (FBCL) 12G7051 Main Motor (MM) 12G7052 BD Gear Assembly...
Page 418 Assembly 3 (cont.): 7-14 Parts Catalog...
Page 419 5024-001 Assembly 3 (cont.): Part Number Units Description Fuser Connector 3 - 25 12G7069 Interlock Switch, Front Door 12G7070 IOD2 P.W.B. 12G7073 Cooling Fan (CTFAN) 12G7074 Waste Toner Feeder Unit (Upper) 12G7075 Erase Lamp 12G7076 Erase Holder (2 pieces) 12G7077 Oil Sensor 12G7078 Belt Sensor (PBS)
Page 420 Assembly 4: 7-16 Parts Catalog...
Page 421: Assembly 4
5024-001 Assembly 4: Part Units Description Number Paper Feed Roller 4 - 1 12G7098 Separator Pad 12G7099 OHP Sensor 12G7100 Paper Sensor (PEU) 12G7037 Paper Sensor (PT1) 12G7037 Paper Guide (UL) Assembly 12G7103 Paper Guide (UR) 12G7104 Transfer Unit Rear Band 12G7186 Transfer Unit Hinge Support Bracket 12G7187...
Page 422: Assembly 5: Controller Rip Card
5024-001 Assembly 5: Controller RIP Card 7-18 Service Manual...
Page 423 5024-001 Assembly 5: Controller RIP Card Part Units Description Number Controller RIP Card 5 - 1 12G7226 Controller RIP Card Network 12G7227 SIMM Code 12G7228 4MB SDRAM DIMM 99A1752 32MB SDRAM DIMM 99A1755 Riser Card Assembly 12G7229 Hard Disk Mounting Bracket 12G7231 Hard Disk 99A0459...
Page 424: Assembly 6: Printer Cable Harness Sets
5024-001 Assembly 6: Printer Cable Harness Sets 7-20 Service Manual...
Page 425 5024-001 Assembly 6: Printer Cable Harness Sets Part Units Description Number Harness WH (A) Wiring Diagram #1 6 - 1 12G7342 Harness WH (B) Wiring Diagram #2 12G7343 Harness WH (C) Wiring Diagram #3 12G7344 Harness WH (D) Wiring Diagram #4 12G7345 Harness WH (I1/SEN) Wiring Diagram #5 12G7346...
Page 426: Assembly 7: Miscellaneous
5024-001 Assembly 7: Miscellaneous (No illustration) 7-22 Service Manual...
Page 427 5024-001 Assembly 7: Miscellaneous Part Number Units Description Card Assembly, SIMM IPDS/SCS/TNE 12G1704 Cable, Coax 13A0297 Cable, Twinax 13A0296 Hard Disk, 2.1GB 99A0459 Adapter, Serial 99A0545 MarkNet N2000t 4/16 Token Ring 12G1696 MarkNet N2002e 10Base2/10BaseT 12G1697 MarkNet N2001e 10/100 Ethernet 99A1830 4MB SDRAM DIMM 99A1752...
Page 428: Assembly 8: Lower Feed Unit
5024-001 Assembly 8: Lower Feed Unit 7-24 Service Manual...
Page 429 5024-001 Assembly 8: Lower Feed Unit Part Units Description Number Paper Sensor (PEL) 8 - 1 12G7037 Paper Size Sensor (PSL) 12G7043 Paper Feed Clutch (PKCL) 12G7045 Paper Feed Roller 12G7098 Separator Pad (2) 12G7099 LF Side Cover R 12G7121 LF Side Cover L 12G7122 LF Clutch Drive, Transport Roller (DPKCL)
Page 430 5024-001 Assembly 8 (cont.): Lower Feed Unit (cont.) 7-26 Service Manual...
Page 431 5024-001 Assembly 8 (cont.): Lower Feed Unit (cont.) Part Units Description Number LFU / Duplex Parts Packet, Screws 12G7135 LFU / Duplex Parts Packet, Retainers 12G7136 LFU / Duplex Parts Packet, Cable Tie / 12G7137 Guides LFU / Duplex Parts Packet, Springs 12G7139 Note: Reference the foldout wiring diagram, in the back of this manual, for cable replacement detailed information.
Page 432: Assembly 9: Duplex Unit
5024-001 Assembly 9: Duplex Unit 7-28 Service Manual...
Page 433 5024-001 Assembly 9: Duplex Unit Part Units Description Number Cover Top (C) Assembly 9 - 1 12G7105 Cover Top (L) 12G7106 Cover Top (R) 12G7107 Cover Top (B) Assembly 12G7108 Cover Low (L) 12G7109 Cover Low (R) 12G7110 Cover Low (B) Assembly 12G7111 Paper Guide Bottom Assembly (includes 12G7112...
Page 434 5024-001 Assembly 9 (cont.): Duplex Unit (cont.) 7-30 Service Manual...
Page 435 5024-001 Assembly 9: Duplex Unit Part Units Description Number Cover Bottom 9 - 23 12G7120 Spring (contains 2 springs) 12G7139 D Roller (contains 20 rollers) 12G7126 3 Belts 12G7127 Lid-WH Bottom 12G7128 D Sensor Bottom Bill of Material 12G7129 D Sensor Middle Bill of Material 12G7130 D Gear Cover 12G7131...
Page 436 5024-001 7-32 Service Manual...
Page 437 5024-001 Index Exiting Diagnostic Mode 3-20 Flash Test 3-15 Acronyms Hardware Tests Adjustments LCD Test Assemblies Paper Jam Sequence Assembly 1 Parallel Strobe Adjustment 3-18 Assembly 2 Parallel Wrap Test 3-10 Assembly 3 7-13 Print Registration Assembly 4 7-17 Print Tests Cable Harness Sets 7-21 Printer Setup...
Page 438 5024-001 Messages Operator Interface Control 1-47 Paper Jam 2-27 Interface Connection 1-47 Interface Type 1-47 Optical System 1-35 Laser Drive Control Circuit 1-45 Laser Notices xiii Paper Discharging Process 1-33 Locations Paper Jam Sequence Boards Paper Transportation System 1-37 Connector Pin Assignments 5-24 Fusing Process 1-41...
Page 439 5024-001 Part Numbers Safety Information xxiv 11G0962 7-19 Second Transfer (Paper) Process 12G1696 7-23 1-32 12G1697 7-23 Serial Number 3-16 12G1704 7-23 Service Checks 12G7004 Paper Feed 2-77 12G7005 Print Quality 2-83 12G7006 Printer 2-38 12G7007 Service Precautions 12G7008 Spacing Table 2-106 12G7010 Standard Features...
Page 440 5024-001 12G7047 7-13 12G7114 7-29 12G7048 7-13 12G7115 7-29 12G7049 7-13 12G7116 7-29 12G7051 7-13 12G7117 7-29 12G7052 7-13 12G7118 7-29 12G7053 7-13 12G7119 7-29 12G7054 7-13 12G7120 7-31 12G7055 7-13 12G7121 7-25 12G7056 7-13 12G7122 7-25 12G7057 7-13 12G7123 7-25 12G7058 7-13...
Page 441: Index
5024-001 12G7164 12G7360 12G7165 13A0296 7-23 12G7166 13A0297 7-23 12G7167 1339517 12G7168 1339518 12G7169 1339520 12G7170 1339524 12G7171 1339528 12G7172 1339529 12G7173 1339530 12G7174 1339531 12G7175 1339532 12G7176 1339533 12G7177 7-11 1339534 12G7179 7-11 7366394 7-23 12G7180 7-11 7366409 7-23 12G7181 7-15 7366413...

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5024-001

Lexmark C720 Service Manual

Notices and Safety Information

Preface

General Information

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Diagnostic Information

992-Drum Cleaner Brush Cam Clutch (FBCM) Service Check

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Diagnostic Aids

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Locations

Quick Links

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Summary of Contents for Lexmark C720