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Lexmark 5021-0XX manual Details of the optical system, Description

Models: 5021-0XX

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5021-0XX

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. 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 reflects the laser
	2	beam
		beam

	3	Cylinder lens: laser beam condenser

	4	Laser unit: laser diode light emitting source

	5	LDC: laser diode control circuit

	6	BTD mirror: beam timing detector mirror to guide the
	6	laser beam to PD
		laser beam to PD

	7	Scanner motor: rotates the polygon mirror

1-40Service Manual

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Lexmark 5021-0XX manual Details of the optical system, Description

Contents

Revised March 24 5021-0XX United States Government RightsTable of contents Diagnostic information 5021-0XX Diagnostic aids Vii 5021-0XX Locations and connectors 5021-0XX Laser advisory label Laser noticesClass 1 Laser statement label Laser notice LaserAvis relatif à l’utilisation de laser Avvertenze sui prodotti laserAvisos sobre el lá ser Laserinformatie LasermeddelelseHuomautus laserlaitteesta Laser-notisLaser-melding Avís sobre el Là serJapanese laser notice Chinese laser notice Korean laser notice Safety information Consignes de sé curitéNorme di sicurezza SicherheitshinweisePautas de Seguridad Informaçõ es de Seguranç aInformació de Seguretat 5021-0XX Preface DefinitionsMaintenance approach Tools required for serviceSerial number Acronyms Technical specifications SpecificationsResolution Model differencesPhysical specifications and weight Width Depth Height Weight4 Inch PrintersPackaging and shipping dimensions Operating clearancesProcessor Print speed and performanceTime to first print 500 MHz General informationPaper and media specifications Duty cyclePrinter memory 5021-0XX Input and output configurations Sources and capacities C510/C510n C510dtn5021-0XX Media input types and weights Media sizes JIS B53Paper Output capacity by media and sourceMedia guidelines EnvelopesTransparencies LabelsGlossy Paper IBM AS/400 ConnectivityCables Personal computers ConnectionsPower and electrical specifications Environment Specifications EnvironmentPrinter identification Options identification Printer theory of operation Printer paper path Printer systems description Basic principles of color printingMechanical and electrical structures 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 Details of the print system Charging process5021-0XX Exposing process Developing process DBV First transfer drum process Belt discharge erase lamp process Toner image is then transferred to paperBelt cleaning process 5021-0XX Details of the transfer system Second transfer paper processTransfer belt cleaning process Details of the optical system Description5021-0XX Details of the paper transportation system Part Function5021-0XX Fusing unit 5021-0XX Fusing process Control system structure Electrical system and functionControl block diagram Control of print processPrint sequence diagram Laser drive control circuit Interface control Interface typeInterface connection 5021-0XX Diagnostic information StartService error codes Go to 912-Power supply fan service check on Go to 910-Developer motor service check onGo to 911-Main motor service check on Go to 913-Fuser fan service check onGo to 930,931,932-Laser unit assembly service Go to 920-Fuser thermistor service check onGo to 921,922,923,924,925-Fuser assembly RIP board. Go to RIP board removal onTo RIP board removal on Controller board removal onPanel cable removal on Board removal onDownload emulations on Go to 985-Duplex connection error 1 service Go to 986-Duplex connection error 2 serviceGo to 992-Transfer belt cleaning roller clutch Go to 990-Transfer belt unit service check onGo to 991-Transfer roller clutch service check Go to 993-Fuser clutch service check onPaper size sensing service Cover open service checkOperator messages 5021-0XX Performing Self Test Go to Output tray full TMATo Incorrect media service Empty service check onCartridge service check on To Paper size sensing5021-0XX Insufficient Memory and Held Memory may be defective 5021-0XX Configuration Change Missing service check on Waste toner bottle serviceEngine controller board Assembly removal onFuser assembly removal Removal onGo to Toner low/empty Paper jam messages Board. See I/O board removal Paper guide C assemblyPaper exit assembly removal on Engine controller board removalAssembly. See Secondary paper See Duplex unit assemblyProblem, see Paper feed service Feed assembly removal onSymptom tables Printer symptom tableSee Waste toner feed service See White band service checkSee Printer no power service See Service error codes onPrint quality symptom table See Insufficient gloss service See Mottle service check onSee Residual image service See Back stain service check onPrinter service checks Yellow developer clutch service checkInterlock 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 Motor removal Developer motor service checkSee Developer 4-32. GoSwitch locations on On page 4-70for steps toBoard cage 4-57. GoSee Engine Main motor service check FuserAssembly Main motor4-38. Go Board removal Interlock switch Power supply fan service checkPower supply Fan removal onSee Rear Fuser fan service checkInterlock switch Cover assembly Locations on Removal onLaser fan service check Interlock switch Removal onLaser unit fan Erase lamp service check Erase lamp Removal onErase lamp 5021-0XX Toner empty sensor sender-TPD service check See Engine controller Board removal onSensor sender removal On page 4-35for steps Toner sensor Toner empty sensor receiver-TTR service checkSee Engine controller ReceiverHvps connection service check Lower feed unit secondary paper assembly service check Right cover removal onFuser thermistor service check See Fuser assemblyRemoval on See Engine 921,922,923,924,925-Fuser assembly service check Printhead 930,931,932-Laser unit assembly service checkLaser unit Removal on 4-24. GoDuplex connection error 1 service check Duplex connection error 2 service check Unit removal Transfer belt unit service checkTransfer belt BracketFor 5 VDC from pin 9 to Replace faulty Transfer roller clutch service check ClutchOn page 4-70. If Transfer belt cleaning roller clutch service check Cleaning rollerClutch removal Fuser clutch service check Right cover removal on ClutchMarker sensor OPC belt marker sensor service checkRemoval on page 4-70for 4-69. IfFor 5 VDC from pin 11 to Replace faulty Er cartridge High voltage power supply Hvps service checkPhotodevelop Photodeveloper Cartridge removal On page 4-11 . HasHigh voltage Power supply Hvps removal On page 4-59. Has Low voltage power supply Lvps service check Voltage power supply Lvps with cage Removal onController board removal Board removal On page 4-55. Does Cover open service check Cable that connects to Cover interlock switch pin Incorrect media service check Paper guide With cage Removal onMissing photodeveloper cartridge service check High voltage Power supplyPhotodevelop Er cartridge Missing toner cartridge service check Present sensorBoard removal See Toner On page 4-70. If Present sensorPhotodevelop Er cartridge Removal on OPC belt photodeveloper cartridge drive service checkMotor Gear assembly Assembly Removal on See Main See Main driveOperator panel service check Controller board removal On page 4-55. DoesRIP board Removal on See Paper exit Output tray full service checkOn page 4-70. If Assembly Board removal See Paper exit9 to output tray full Paper size sensing service check Left tray guide Printer no power service check OperatorBoard cage removal on 4-60forToner feed service check Developer Retract solenoid Drive assembly Cam Removal onSee Developer Motor removal Sensor sender Toner low/empty service checkOn page 4-70. Does error See Engine 4-35and4-62and Transfer roller missing service checkHvps cage Registration5021-0XX Tray empty service check Assembly removal on Paper guide On page 4-70. If Paper guideSee Paper guide C Bottle holder Waste toner bottle service checkWaste toner Bottle holder removal onWaste toner feed service check Paper feed service checks Printer paper feed service checkRegistration assembly removal on 5021-0XX Background is smeared due to toner spread Print quality service checksBackground service check Photodeveloper cartridgeBack stain service check Backside of paper is stainedBanding service check Banding line appears in horizontal directionSee Photodeveloper cartridge Black line service check Fine black line appears in printer imageColor misregistration service check Color misregistration between two colorsTransfer belt unit removal on Insufficient fusing service check Printed image is partially missingInsufficient gloss service check Gloss on paper is not sufficientAssembly. See Developer drive Jitter service checkMain motor assembly removal on Cartridge removal onMissing image at edge service check Image has missing or peeling toner at edgeClutch removal on Mixed color image service checkMixed color image appears Toner retract solenoid and camVariation of optical density is found in image Mottle service checkVoltage power supply Hvps See Transfer roller removal onResidual image service check See Transfer belt cleaning rollerImage of preceding page appears on every other Ribbing service check Light print occurs in right or left side of imageSolenoid and cam removal on Waste toner feeder removal on Toner drop service checkAuger removal on Removal on page 4-6 . Prior toToner cartridge Replace faulty toner cartridge Vertical line service check Vertical line appears in printed imageVertical staggering image service check Laser unit assembly printheadPrinted image staggers in vertical direction Vertical white band service check White band appears in vertical direction of printed imageTransfer roller removal on White band service checkHorizontal white banding creates missing portion of image See Clutch removal onWhite line I service check Print quality test pages onWhite line II service check White spot / black spot service check White spot and black spot appear on paperBelt unit see Transfer belt unit Removal on page 4-8 . Ensure White print service checkReinstall. See Transfer roller System. See Toner retract solenoidWrinkle / image migration service check Uneven density right and left Transfer belt unit Replace faulty transfer belt unit. See Roller specifications Spacing table5021-0XX Select the Disable Option Disabling download emulationsPaper jam sequence Go to Paper jam messages on page 2-22for more information5021-0XX Paper Jam Diagnostic mode Diagnostics menu structure Print quality test pagesPrint Quality Description Setting tray 2 left margin Print registrationSelect Registration Select Left Margin Adj Select Registration Select Top Margin Setting top marginPrint tests MenuHardware tests Select Single or ContinuousFollowing hardware tests can be selected from this menu LCD test Button testParallel wrap test ROM memory test Dram memory test Serial wrap testTransmit Data Interrupt Error Duplex tests Duplex left marginSelect Duplex Test Select Duplex Left Margin Disk test/clean Device testsQuick disk test Flash test Viewing the permanent page count Printer setupSetting the page count Select either Color Page Counts or Mono Page CountsSetting configuration ID Serial numberParallel strobe adjustment Error log Viewing the error logPrinting the error log Clearing the error log Restore EP factory defaultsExiting diagnostic mode 5021-0XX Removal and cleaning precautions Repair informationDuring transportation/storage During replacementHandling the printed circuit boards with MOS ICs During inspectionPhotodeveloper cartridge HandlingParts not to be touched Printer removal procedures Precautions to take before maintenance workCRU/FRU and supplies removals Cleaning roller cover removal Transfer belt cleaning roller removalTransfer belt unit removal Transfer roller removal Fuser assembly removal Waste toner bottle removal Open front cover Remove waste toner bottlePhotodeveloper 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 Rear cover assembly removal Right cover removal5021-0XX Laser unit assembly printhead removal Left cover removal5021-0XX Laser unit fan assembly removal Erase lamp removal 5021-0XX Front door interlock switch removal Right side removals5021-0XX Front door interlock switch with bracket Developer motor removalDeveloper drive assembly removal Waste toner bottle holder removal5021-0XX 5021-0XX Toner sensor sender removal Cleaning roller clutch removal 5021-0XX Main motor assembly removal 5021-0XX Clutch removal Main drive gear assembly removal Remove fuser clutch. See Clutch removal onRemove main drive gear assembly from printer Waste toner feeder removal5021-0XX Rear removals Bracket assembly removal RIP board removalPaper guide assembly removal Paper guide C assembly removal Paper feed roller removal Paper exit assembly removal Remove two screws C 5021-0XX Registration assembly removal Remove transfer roller. See Transfer roller removal onLeft side removals Operator panel cable removal Remove left cover. See Left cover removal onEngine controller board removal 5021-0XX RIP board cage removal Remove ducting High voltage power supply Hvps removal Disconnect all connectors from Hvps Repair informationLow voltage power supply Lvps with cage removal 5021-0XX Remove HVPS. See High voltage power supply Hvps removal on Hvps cage removalToner present sensor removal Remove four screws C remove Hvps cageToner sensor receiver removal Toner retract solenoid and cam 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 Locations and connectors PrinterPart name Description Options Electronic components Sensor locationsTNK Printer circuit board locations Name FunctionFan/motor locations Interlock switch locations Solenoid/clutch locations FbclToner retract Symbol and part name table Symbol Part nameLDU TTR Trcm Wiring diagram / cable harness reference RIP board Engine controller board Input/output I/O board 5021-0XX Printer cables Engine controller board I1CN-I/O board DCN15021-0XX OAD1 OAD2 Sgnd Engine controller board I2CN-I/O board DCN3 DCN35021-0XX Engine controller board HVCN-HVPS CN1 Hvcn Engine controller board P2CN-Operator panel Board DCN13-LVPS ACN1 Lvps ACN2-Interlock switches Board DCN18-Interlock switchesInterlock switches-Interlock switches Lvps ACN5-Engine controller board DCN21 Lvps ACN5-Engine controller board LvcnNo connection Engine controller board POCN-LVPS ACN3 ACN3Board DCN4-Toner retract solenoids DCN45021-0XX Board DCN5-Photodeveloper OPC marker sensor Board DCN8-Laser fanBoard DCN15-Toner present sensor, erase lamp Tleschk Sgnd Board DCN16-Sensors DCN16Board DCN7-Rear cover assembly DCN7Htfanerr DCN10 DCLCON-N 5021-0XX Board DCN11-Developer motor Board DCN12-Main motorMmenc MMREV-N Mmgain Mmovld Engine board LCN-Printhead LDU LDUSgnd SCMRDY-N Scmclk Pgnd SCMON-N Board DCN14-Lower feeder unit DCN14LFCN-CHK-N Board DCN19-Paper size sensor and temperature thermistor DCN19Fuser connector-LVPS 120V Printer Fuser connector-LVPS 240V PrinterEngine controller board FUCN-fuser Lvps ACN4-Duplex unit Dupl and duplex power 5021-0XX Engine controller board DPCN-Duplex unit DuplDuplex Preventive maintenance 5021-0XX How to use this parts catalog Parts catalogAssembly 1 Base printer Assembly 1 Base printer Index Units DescriptionAssembly 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 Assembly 9 Miscellaneous/Options DIMM, 128MB SdramAssembly 9 Miscellaneous/Options Index Paper transportation system 5021-0XX 5021-0XX Part number index 5021-0XX 5021-0XX 5021-0XX