Lexmark C500N Service Manual Download Page 41 | Manualshive

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Lexmark C500N Service Manual Download Page 41

General information

1-19

5023-110

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 belt. A color print is accomplished by actuating each process in
the print system and the transfer system.

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Summary of Contents for C500N

Page 1: ...3 110 Table of contents Start diagnostics Safety and notices Trademarks Index Lexmark and Lexmark with diamond design are trademarks of Lexmark International Inc registered in the United States and or...

Page 2: ...rences in this publication to products programs or services do not imply that the manufacturer intends to make these available in all countries in which it operates Any reference to a product program...

Page 3: ...1 12 Printer identification 1 13 Printer theory of operation 1 14 Printer paper path 1 15 Printer systems description 1 16 Basic principles of color printing 1 16 Mechanical and electrical structures...

Page 4: ...e check 2 22 Power supply fan service check 2 23 Fuser fan service check 2 23 High voltage power supply HVPS service check 2 24 Low voltage power supply LVPS service check 2 24 Fuser thermistor servic...

Page 5: ...vice check 2 61 White print service check 2 62 Wrinkle image migration service check 2 63 Uneven density right and left 2 64 Spacing table 2 65 Roller specifications 2 65 Diagnostic aids 3 1 Understan...

Page 6: ...oval 4 28 Bracket assembly removal 4 29 Paper guide assembly removal 4 30 Paper guide C assembly removal 4 31 Paper feed roller removal 4 32 Paper exit assembly removal 4 32 Registration assembly remo...

Page 7: ...e controller board 5 13 Low voltage power supply LVPS board 5 14 High voltage power supply HVPS board 5 14 Preventive maintenance 6 1 Parts catalog 7 1 How to use this parts catalog 7 1 Index I 1 Part...

Page 8: ...viii Service Manual 5023 110...

Page 9: ...Laser notices ix 5023 110 Laser notices The following laser notice labels may be affixed to this printer as shown Laser advisory label...

Page 10: ...x Service Manual 5023 110 Class 1 Laser statement label XXXXXXXX2004 XXX XXX XX20 04 XXX XXX XX2 004...

Page 11: ...service condition Laser Der Drucker erf llt gem amtlicher Best tigung der USA die Anforderungen der Bestimmung DHHS Department of Health and Human Services 21 CFR Teil J f r Laserprodukte der Klasse...

Page 12: ...en par l utilisateur ou de r vision l exposition des rayonnements laser sup rieurs des rayonnements de Classe I Avvertenze sui prodotti laser Questa stampante certificata negli Stati Uniti per essere...

Page 13: ...r al nivel de la Clase I durante su uso normal el mantenimiento realizado por el usuario o cualquier otra situaci n de servicio t cnico Declara o sobre Laser A impressora est certificada nos E U A em...

Page 14: ...ontworpen dat bij normaal gebruik bij onderhoud of reparatie conform de voorschriften nooit blootstelling mogelijk is aan laserstraling boven een niveau zoals voorgeschreven is voor klasse 1 Lasermed...

Page 15: ...a suojalukitus ohitettaessa olet alttiina n kym tt m lle lasers teilylle l katso s teeseen VARNING Osynlig laserstr lning n r denna del r ppnad och sp rren r urkopplad Betrakta ej str len Laser notis...

Page 16: ...ne serviceoperasjoner Av s sobre el L ser Segons ha estat certificat als Estats Units aquesta impressora compleix els requisits de DHHS 21 CFR apartat J pels productes l ser de classe I 1 i segons ha...

Page 17: ...Laser notices xvii 5023 110 Chinese laser notice Korean laser notice...

Page 18: ...xviii Service Manual 5023 110...

Page 19: ...nsignes d entretien et de r paration de ce produit s adressent uniquement un personnel de maintenance qualifi Le d montage et l entretien de ce produit pouvant pr senter certains risques lectriques le...

Page 20: ...sobre el mantenimiento de este producto est dirigida exclusivamente al personal cualificado de mantenimiento Existe mayor riesgo de descarga el ctrica y de da os personales durante el desmontaje y la...

Page 21: ...roducte est orientada exclusivament a professionals i no est destinada a ning que no ho sigui El risc de xoc el ctric i de danys personals pot augmentar durant el proc s de desmuntatge i de servei d a...

Page 22: ...identify the connector locations and test points on the printer 6 Preventive maintenance contains the lubrication specifications and recommendations to prevent problems 7 Parts catalog contains illus...

Page 23: ...rmine the symptom and repair the failure See Diagnostic information on page 2 1 for location of each section You may find that the removals in the Repair information chapter will help you identify par...

Page 24: ...1 2 Service Manual 5023 110 Serial number Look for serial number information on the right cover and the inside of the front cover of your printer XXXXXXXX2004 XXX XXX XX20 04 XXX XXX XX2 004...

Page 25: ...gh Voltage Power Supply LAN Local Area Network LASER Light Amplification by Stimulated Emission of Radiation LCD Liquid Crystal Display LED Light Emitting Diode LV Low Voltage LVPS Low Voltage Power S...

Page 26: ...weights for each printer model and option This does not include packaging but does include the print cartridge that ships with the printer C500n C500tn USB 2 0 X X Parallel Ethernet X X Memory MB 64 6...

Page 27: ...265 8 5 Legal tray 13 2 19 0 5 7 5 5 335 483 144 2 5 1 Includes start up kit supplies Pages minute Media size Standard tray Letter 31 8 A4 31 8 Legal 16 8 Transparencies 3 2 Thick card stock 3 2 Labe...

Page 28: ...edia specifications and printer operating environment The capacities listed are based on plain paper at 75 g m2 Standard DRAM 64MB Optional SDRAM N A Max DRAM 64MB Sources and capacities C500n Input s...

Page 29: ...g m2 24 32 lb Plain paper Heavy Card stock Index 163 g m2 90 lb N A Card stock Normal Index 164 210 g m2 91 110 lb N A Card stock Heavy Transparency3 PN 12A5940 PN 12A5941 N A Transparency Labels2 N...

Page 30: ...x 330 8 5 x 13 X X Statement 139 7 x 215 9 5 5 x 8 5 X X Universal1 X X X Standard 250 sheet letter tray 104 8x210 to 215 9x297 4 125x8 27 to 8 5x11 7 Optional 250 sheet legal tray 104 8x210 to 215 9x...

Page 31: ...for correct loading and stacking of envelopes All envelopes should be new unused and without damage Envelopes with excessive curl or twist exceeding 6 0 mm those stuck together those with bent corner...

Page 32: ...2000 Server Microsoft Windows 2000 Advanced Server Microsoft Windows XP Home Microsoft Windows XP Professional Microsoft Windows Server 2003 Download the latest printer drivers from the Lexmark Web S...

Page 33: ...pleTalk This printer with standard Ethernet supports an Embedded Web Server The current status of the operator panel is viewable using the resident web pages Standard Interfaces This printer ships wit...

Page 34: ...pecifications Operating Air temperature product operating 10 to 32 5 C 50 to 90 5 F Air temperature product power off 5 to 35 C 41 to 95 F Air relative humidity 15 to 80 Altitude 0 2 500 m 0 8 200 ft...

Page 35: ...23 110 Printer identification Power switch Top cover assembly Rear cover assembly Release lever Right cover Paper tray Front cover Paper stopper Operato panel cover r Front view Left cover AC input in...

Page 36: ...1 14 Service Manual 5023 110 Printer theory of operation The following diagram shows the major parts of the printer and paper path...

Page 37: ...es for jams at specific points in the paper path The printer depicted in the illustration has a duplex unit and secondary paper feed assembly installed Fuser Unit Transfer Roller Assy Registration Rol...

Page 38: ...l parts that transfers the toner image formed on the transfer belt to paper transfer belt unit second transfer and cleaning roller Optical system The optical system consists of two functional parts th...

Page 39: ...General information 1 17 5023 110 Printer component systems...

Page 40: ...and black 2 The toner image is developed with primary colors and then transferred to the transfer belt for color combination 3 The toner image formed on the transfer belt is transferred to paper 4 Th...

Page 41: ...ystem 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 belt A color print is accomplished by actuat...

Page 42: ...veloper 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...

Page 43: ...ply CBV 2 The OPC belt is then evenly charged to the negative high voltage by the OPC charging system The charging system consists of a charging brush that is biased by power supply CHV and a discharg...

Page 44: ...nd DBV V A visible image is the result e The negatively charged toner on the OPC belt is moved to the transfer belt because the potential GND of the transfer belt is greater than VR V of the OPC belt...

Page 45: ...sists of a charging brush and a discharge roller 1 The charge brush charges the OPC belt surface to Vo V potential The charge on the surface of the OPC belt is then smoothed to an even Vo V by the dis...

Page 46: ...ical unit location The laser light scans the OPC belt forming an electrostatic latent image 1 The OPC belt surface is charged to Vo V potential a The laser scans the OPC belt in a rectangular pattern...

Page 47: ...located in the printer from top to bottom in the order of black yellow magenta and cyan 1 Toner adheres to the developer roller The developer roller makes contact with the surface of the OPC belt whi...

Page 48: ...t The transfer belt is composed of a special rubber See Printer theory of operation on page 1 14 for transfer belt location 1 After the development process the OPC belt rotates making contact and sync...

Page 49: ...fter the first transfer process Electrical cleaning occurs after each toner color transfer The erase lamp is a luminous source consisting of 24 light emitting diodes After the electrical belt cleaning...

Page 50: ...28 Service Manual 5023 110 The residual toner is collected in a waste toner container located by the waste toner feeder OPC belt OPC belt cleaning blade First transfer OPC belt discharging erase lamp...

Page 51: ...ory of operation on page 1 14 for second transfer roller location The transfer roller normally separated from the transfer belt is positively biased by the power supply THV The transfer roller contact...

Page 52: ...by voltage FCBV The resistance of the cleaning brush against the cleaning roller charges the brush The brush in turn contacts the surface of the rotating transfer belt The negatively charged toner ad...

Page 53: ...or and lens The electrostatic latent images are formed on the OPC belt The Optical printhead unit consists of following parts No Description 1 PD photo detector 2 Polygon mirror hexahedral mirror that...

Page 54: ...he fused paper to the exit roller and the exit roller pushes the final paper out of the rear cover assembly The paper transportation system consists of the following parts No Part Function 1 Paper tra...

Page 55: ...toner image passes between the rollers where heat and pressure are applied to the paper to fuse the toner to the paper The fusing unit consists of the following components No Part Function 1 Fusing r...

Page 56: ...temperature is approximately 338 F 170 C 3 When the paper with toner image passes between the heated roller and the backup roller the heat from the heated roller in combination with the pressure betw...

Page 57: ...ner empty status 5 Interface control video signal Processes the input and output signal with external controller computer 6 Operator panel indicator Displays printer operation status 7 Error control C...

Page 58: ...1 36 Service Manual 5023 110 Print sequence diagram...

Page 59: ...t switches the laser diode switch on and radiates according to the video signal 2 The radiated laser beam senses the photo detector PD The detected signal is returned to the output control circuit 3 T...

Page 60: ...1 38 Service Manual 5023 110...

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