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Lexmark 5021-0XX manual Basic structure of the print system

Models: 5021-0XX

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5021-0XX

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.

General information 1-27

Image 53

Lexmark 5021-0XX manual Basic structure of the print system

Contents

Revised March 24 United States Government Rights 5021-0XXTable of contents Diagnostic information 5021-0XX Diagnostic aids Vii 5021-0XX Locations and connectors 5021-0XX Laser notices Laser advisory labelClass 1 Laser statement label Laser Laser noticeAvvertenze sui prodotti laser Avis relatif à l’utilisation de laserAvisos sobre el lá ser Lasermeddelelse LaserinformatieLaser-notis Huomautus laserlaitteestaAvís sobre el Là ser Laser-meldingJapanese laser notice Chinese laser notice Korean laser notice Consignes de sé curité Safety informationSicherheitshinweise Norme di sicurezzaInformaçõ es de Seguranç a Pautas de SeguridadInformació de Seguretat 5021-0XX Definitions PrefaceTools required for service Maintenance approachSerial number Acronyms Resolution SpecificationsTechnical specifications Model differencesWidth Depth Height Weight4 Inch Printers Physical specifications and weightOperating clearances Packaging and shipping dimensionsTime to first print Print speed and performanceProcessor 500 MHz General informationPrinter memory Paper and media specificationsDuty cycle Sources and capacities C510/C510n C510dtn 5021-0XX Input and output configurations5021-0XX Media input types and weights JIS B53 Media sizesMedia guidelines Output capacity by media and sourcePaper EnvelopesGlossy Paper TransparenciesLabels Cables Personal computers ConnectivityIBM AS/400 ConnectionsPower and electrical specifications Environment Environment SpecificationsPrinter identification Options identification Printer theory of operation Printer paper path Mechanical and electrical structures Printer systems descriptionBasic principles of color printing 5021-0XX Control system Printer component systems Basic process of color printing Print system and transfer system Structure of OPC belt photo developer cartridge Basic structure of the print system CBV DBV Charging process Details of the print system5021-0XX Exposing process Developing process DBV First transfer drum process Toner image is then transferred to paper Belt discharge erase lamp processBelt cleaning process 5021-0XX Second transfer paper process Details of the transfer systemTransfer belt cleaning process Description Details of the optical system5021-0XX Part Function Details of the paper transportation system5021-0XX Fusing unit 5021-0XX Fusing process Electrical system and function Control system structureControl of print process Control block diagramPrint sequence diagram Laser drive control circuit Interface connection Interface controlInterface type 5021-0XX Start Diagnostic informationService error codes Go to 911-Main motor service check on Go to 910-Developer motor service check onGo to 912-Power supply fan service check on Go to 913-Fuser fan service check onGo to 921,922,923,924,925-Fuser assembly Go to 920-Fuser thermistor service check onGo to 930,931,932-Laser unit assembly service RIP board. Go to RIP board removal onPanel cable removal on Controller board removal onTo RIP board removal on Board removal onDownload emulations on Go to 986-Duplex connection error 2 service Go to 985-Duplex connection error 1 serviceGo to 991-Transfer roller clutch service check Go to 990-Transfer belt unit service check onGo to 992-Transfer belt cleaning roller clutch Go to 993-Fuser clutch service check onOperator messages Paper size sensing serviceCover open service check 5021-0XX Performing Self Test TMA Go to Output tray fullCartridge service check on Empty service check onTo Incorrect media service To Paper size sensing5021-0XX Insufficient Memory and Held Memory may be defective 5021-0XX Configuration Change Waste toner bottle service Missing service check onFuser assembly removal Assembly removal onEngine controller board Removal onGo to Toner low/empty Paper jam messages Paper exit assembly removal on Paper guide C assemblyBoard. See I/O board removal Engine controller board removalProblem, see Paper feed service See Duplex unit assemblyAssembly. See Secondary paper Feed assembly removal onPrinter symptom table Symptom tablesSee Printer no power service See White band service checkSee Waste toner feed service See Service error codes onPrint quality symptom table See Residual image service See Mottle service check onSee Insufficient gloss service See Back stain service check onYellow developer clutch service check Printer service checksInterlock switch Locations on Magenta developer clutch service check 5021-0XX Cyan developer clutch service check 5021-0XX Black developer clutch service check 5021-0XX Yellow toner retract solenoid service check Engine Controller Board removal Magenta toner retract solenoid service check 5021-0XX Cyan toner retract solenoid service check 5021-0XX Black toner retract solenoid service check 5021-0XX See Developer Developer motor service checkMotor removal 4-32. GoOn page 4-70for steps to Switch locations onSee Engine Board cage4-57. Go Fuser Main motor service check4-38. Go AssemblyMain motor Board removal Power supply Power supply fan service checkInterlock switch Fan removal onInterlock switch Cover assembly Fuser fan service checkSee Rear Locations on Removal onLaser unit fan Laser fan service checkInterlock switch Removal on Erase lamp Erase lamp service checkErase lamp Removal on 5021-0XX Sensor sender removal On page 4-35for steps Toner empty sensor sender-TPD service checkSee Engine controller Board removal on See Engine controller Toner empty sensor receiver-TTR service checkToner sensor ReceiverHvps connection service check Right cover removal on Lower feed unit secondary paper assembly service checkRemoval on See Engine Fuser thermistor service checkSee Fuser assembly 921,922,923,924,925-Fuser assembly service check Laser unit 930,931,932-Laser unit assembly service checkPrinthead Removal on 4-24. GoDuplex connection error 1 service check Duplex connection error 2 service check Transfer belt Transfer belt unit service checkUnit removal BracketFor 5 VDC from pin 9 to Replace faulty On page 4-70. If Transfer roller clutch service checkClutch Clutch removal Transfer belt cleaning roller clutch service checkCleaning roller Right cover removal on Clutch Fuser clutch service checkRemoval on page 4-70for OPC belt marker sensor service checkMarker sensor 4-69. IfFor 5 VDC from pin 11 to Replace faulty Photodevelop High voltage power supply Hvps service checkEr cartridge Photodeveloper Cartridge removal On page 4-11 . HasHigh voltage Power supply Hvps removal On page 4-59. Has Controller board removal Board removal On page 4-55. Does Low voltage power supply Lvps service checkVoltage power supply Lvps with cage Removal on Cover open service check Cable that connects to Cover interlock switch pin Incorrect media service check With cage Removal on Paper guidePhotodevelop Er cartridge Missing photodeveloper cartridge service checkHigh voltage Power supply Present sensor Missing toner cartridge service checkOn page 4-70. If Present sensor Board removal See TonerMotor Gear assembly Assembly Removal on OPC belt photodeveloper cartridge drive service checkPhotodevelop Er cartridge Removal on See Main See Main driveRIP board Removal on Operator panel service checkController board removal On page 4-55. Does On page 4-70. If Assembly Output tray full service checkSee Paper exit Board removal See Paper exit9 to output tray full Paper size sensing service check Left tray guide Operator Printer no power service check4-60for Board cage removal onSee Developer Motor removal Toner feed service checkDeveloper Retract solenoid Drive assembly Cam Removal on On page 4-70. Does error See Engine Toner low/empty service checkSensor sender 4-35andHvps cage Transfer roller missing service check4-62and Registration5021-0XX Tray empty service check See Paper guide C Assembly removal on Paper guideOn page 4-70. If Paper guide Waste toner Waste toner bottle service checkBottle holder Bottle holder removal onWaste toner feed service check Registration assembly removal on Paper feed service checksPrinter paper feed service check 5021-0XX Background service check Print quality service checksBackground is smeared due to toner spread Photodeveloper cartridgeBackside of paper is stained Back stain service checkSee Photodeveloper cartridge Banding service checkBanding line appears in horizontal direction Fine black line appears in printer image Black line service checkColor misregistration between two colors Color misregistration service checkTransfer belt unit removal on Printed image is partially missing Insufficient fusing service checkGloss on paper is not sufficient Insufficient gloss service checkMain motor assembly removal on Jitter service checkAssembly. See Developer drive Cartridge removal onImage has missing or peeling toner at edge Missing image at edge service checkMixed color image appears Mixed color image service checkClutch removal on Toner retract solenoid and camVoltage power supply Hvps Mottle service checkVariation of optical density is found in image See Transfer roller removal onImage of preceding page appears on every other Residual image service checkSee Transfer belt cleaning roller Light print occurs in right or left side of image Ribbing service checkSolenoid and cam removal on Auger removal on Toner drop service checkWaste toner feeder removal on Removal on page 4-6 . Prior toToner cartridge Replace faulty toner cartridge Vertical line appears in printed image Vertical line service checkPrinted image staggers in vertical direction Vertical staggering image service checkLaser unit assembly printhead White band appears in vertical direction of printed image Vertical white band service checkHorizontal white banding creates missing portion of image White band service checkTransfer roller removal on See Clutch removal onPrint quality test pages on White line I service checkWhite line II service check Belt unit see Transfer belt unit White spot / black spot service checkWhite spot and black spot appear on paper Reinstall. See Transfer roller White print service checkRemoval on page 4-8 . Ensure System. See Toner retract solenoidWrinkle / image migration service check Uneven density right and left Transfer belt unit Replace faulty transfer belt unit. See Spacing table Roller specifications5021-0XX Disabling download emulations Select the Disable OptionGo to Paper jam messages on page 2-22for more information Paper jam sequence5021-0XX Paper Jam Diagnostic mode Print Quality Description Diagnostics menu structurePrint quality test pages Select Registration Select Left Margin Adj Setting tray 2 left marginPrint registration Print tests Setting top marginSelect Registration Select Top Margin MenuFollowing hardware tests can be selected from this menu Hardware testsSelect Single or Continuous Parallel wrap test LCD testButton test ROM memory test Serial wrap test Dram memory testTransmit Data Interrupt Error Select Duplex Test Select Duplex Left Margin Duplex testsDuplex left margin Quick disk test Disk test/cleanDevice tests Flash test Setting the page count Printer setupViewing the permanent page count Select either Color Page Counts or Mono Page CountsSerial number Setting configuration IDParallel strobe adjustment Printing the error log Error logViewing the error log Restore EP factory defaults Clearing the error logExiting diagnostic mode 5021-0XX Repair information Removal and cleaning precautionsHandling the printed circuit boards with MOS ICs During replacementDuring transportation/storage During inspectionParts not to be touched Photodeveloper cartridgeHandling Precautions to take before maintenance work Printer removal proceduresCRU/FRU and supplies removals Transfer belt cleaning roller removal Cleaning roller cover removalTransfer belt unit removal Transfer roller removal Fuser assembly removal Open front cover Remove waste toner bottle Waste toner bottle removalPhotodeveloper cartridge removal 5021-0XX Duplex unit assembly removal 5021-0XX Lift duplex unit up and away from printer Repair information Secondary paper feed assembly removal Cover removals Top cover assembly removal Front cover assembly removal 5021-0XX 5021-0XX Right cover removal Rear cover assembly removal5021-0XX Left cover removal Laser unit assembly printhead removal5021-0XX Laser unit fan assembly removal Erase lamp removal 5021-0XX Right side removals Front door interlock switch removal5021-0XX Developer motor removal Front door interlock switch with bracketWaste toner bottle holder removal Developer drive assembly removal5021-0XX 5021-0XX Toner sensor sender removal Cleaning roller clutch removal 5021-0XX Main motor assembly removal 5021-0XX Clutch removal Remove fuser clutch. See Clutch removal on Main drive gear assembly removalWaste toner feeder removal Remove main drive gear assembly from printer5021-0XX Rear removals RIP board removal Bracket assembly removalPaper guide assembly removal Paper guide C assembly removal Paper feed roller removal Paper exit assembly removal Remove two screws C 5021-0XX Remove transfer roller. See Transfer roller removal on Registration assembly removalLeft side removals Remove left cover. See Left cover removal on Operator panel cable removalEngine controller board removal 5021-0XX RIP board cage removal Remove ducting Disconnect all connectors from Hvps Repair information High voltage power supply Hvps removalLow voltage power supply Lvps with cage removal 5021-0XX Hvps cage removal Remove HVPS. See High voltage power supply Hvps removal onRemove four screws C remove Hvps cage Toner present sensor removalToner retract solenoid and cam removal Toner sensor receiver removalLeft tray guide assembly removal 5021-0XX 5021-0XX Top removals Marker sensor assembly removal Board removal Do not remove the jumper Waste toner auger removal Waste toner agitator removal Power supply fan removal Printer Locations and connectorsPart name Description Options Sensor locations Electronic componentsTNK Name Function Printer circuit board locationsFan/motor locations Interlock switch locations Fbcl Solenoid/clutch locationsToner retract Symbol Part name Symbol and part name tableLDU TTR Trcm Wiring diagram / cable harness reference RIP board Engine controller board Input/output I/O board 5021-0XX Engine controller board I1CN-I/O board DCN1 Printer cables5021-0XX OAD1 OAD2 Sgnd DCN3 Engine controller board I2CN-I/O board DCN35021-0XX Engine controller board HVCN-HVPS CN1 Hvcn Engine controller board P2CN-Operator panel Board DCN13-LVPS ACN1 Interlock switches-Interlock switches Lvps ACN2-Interlock switchesBoard DCN18-Interlock switches Lvps ACN5-Engine controller board Lvcn Lvps ACN5-Engine controller board DCN21No connection ACN3 Engine controller board POCN-LVPS ACN3DCN4 Board DCN4-Toner retract solenoidsBoard DCN15-Toner present sensor, erase lamp 5021-0XX Board DCN5-Photodeveloper OPC marker sensorBoard DCN8-Laser fan Tleschk Sgnd DCN16 Board DCN16-SensorsDCN7 Board DCN7-Rear cover assemblyHtfanerr DCN10 DCLCON-N Board DCN12-Main motor 5021-0XX Board DCN11-Developer motorMmenc MMREV-N Mmgain Mmovld LDU Engine board LCN-Printhead LDUSgnd SCMRDY-N Scmclk Pgnd SCMON-N DCN14 Board DCN14-Lower feeder unitLFCN-CHK-N DCN19 Board DCN19-Paper size sensor and temperature thermistorFuser connector-LVPS 240V Printer Fuser connector-LVPS 120V PrinterEngine controller board FUCN-fuser 5021-0XX Engine controller board DPCN-Duplex unit Dupl Lvps ACN4-Duplex unit Dupl and duplex powerDuplex Preventive maintenance 5021-0XX Parts catalog How to use this parts catalogAssembly 1 Base printer Index Units Description Assembly 1 Base printerAssembly 2 Covers Assembly 2 Covers Assembly 3 Front Assembly 3 Front Assembly 4 Right Assembly 4 Right Assembly 5 Rear Assembly 5 Rear Assembly 6 Left Assembly 6 Left Assembly 7 Top Assembly 7 Top Assembly 8 RIP board Assembly 8 RIP board Assembly 9 Miscellaneous/Options DIMM, 128MB Sdram Assembly 9 Miscellaneous/OptionsAssembly 9 Miscellaneous/Options Index Paper transportation system 5021-0XX 5021-0XX Part number index 5021-0XX 5021-0XX 5021-0XX