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General information

1-21

5023-110

Basic structure of the print system

The print system process consists of the following:

1. The OPC belt is biased to the -CBV(V) by power supply 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 discharge 
roller that is biased by power supply DCV.

3. The developer roller in the toner cartridge is biased to

-DBV(V) by power supply DBV.

4. Frame potential of transfer drum is GND. 

Содержание C500N

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

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

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