Engine Controller Board removal | Lexmark 5021-0XX instruction

5021-0XX

Step	Questions / actions	Yes	No

5	Reassemble and retest	Turn printer off	Problem solved.
	printer. Does 905 error	and replace
	reappear?	engine controller
		board. See
		“Engine
		controller
		board removal”
		on page 4-55.

2-38Service Manual

Image 116

Lexmark 5021-0XX manual Engine Controller Board removal

Contents

Revised March 24 5021-0XX United States Government Rights Table of contents Diagnostic information 5021-0XX Diagnostic aids Vii 5021-0XX Locations and connectors 5021-0XX Laser advisory label Laser notices Class 1 Laser statement label Laser notice Laser Avis relatif à l’utilisation de laser Avvertenze sui prodotti laser Avisos sobre el lá ser Laserinformatie Lasermeddelelse Huomautus laserlaitteesta Laser-notis Laser-melding Avís sobre el Là ser Japanese laser notice Chinese laser notice Korean laser notice Safety information Consignes de sé curité Norme di sicurezza Sicherheitshinweise Pautas de Seguridad Informaçõ es de Seguranç a Informació de Seguretat 5021-0XX Preface Definitions Maintenance approach Tools required for service Serial number Acronyms Specifications ResolutionTechnical specifications Model differences Physical specifications and weight Width Depth Height Weight4 Inch Printers Packaging and shipping dimensions Operating clearances Print speed and performance Time to first printProcessor 500 MHz General information Printer memory Paper and media specificationsDuty cycle 5021-0XX Input and output configurations Sources and capacities C510/C510n C510dtn 5021-0XX Media input types and weights Media sizes JIS B53 Output capacity by media and source Media guidelinesPaper Envelopes Glossy Paper TransparenciesLabels Connectivity Cables Personal computersIBM AS/400 Connections Power and electrical specifications Environment Specifications Environment Printer 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 Details of the print system Charging process 5021-0XX Exposing process Developing process DBV First transfer drum process Belt discharge erase lamp process Toner image is then transferred to paper Belt cleaning process 5021-0XX Details of the transfer system Second transfer paper process Transfer belt cleaning process Details of the optical system Description 5021-0XX Details of the paper transportation system Part Function 5021-0XX Fusing unit 5021-0XX Fusing process Control system structure Electrical system and function Control block diagram Control of print process Print sequence diagram Laser drive control circuit Interface connection Interface controlInterface type 5021-0XX Diagnostic information Start Service error codes Go to 910-Developer motor service check on Go to 911-Main motor service check onGo to 912-Power supply fan service check on Go to 913-Fuser fan service check on Go to 920-Fuser thermistor service check on Go to 921,922,923,924,925-Fuser assemblyGo to 930,931,932-Laser unit assembly service RIP board. Go to RIP board removal on Controller board removal on Panel cable removal onTo RIP board removal on Board removal on Download emulations on Go to 985-Duplex connection error 1 service Go to 986-Duplex connection error 2 service Go to 990-Transfer belt unit service check on Go to 991-Transfer roller clutch service checkGo to 992-Transfer belt cleaning roller clutch Go to 993-Fuser clutch service check on Operator messages Paper size sensing serviceCover open service check 5021-0XX Performing Self Test Go to Output tray full TMA Empty service check on Cartridge service check onTo Incorrect media service To Paper size sensing 5021-0XX Insufficient Memory and Held Memory may be defective 5021-0XX Configuration Change Missing service check on Waste toner bottle service Assembly removal on Fuser assembly removalEngine controller board Removal on Go to Toner low/empty Paper jam messages Paper guide C assembly Paper exit assembly removal onBoard. See I/O board removal Engine controller board removal See Duplex unit assembly Problem, see Paper feed serviceAssembly. See Secondary paper Feed assembly removal on Symptom tables Printer symptom table See White band service check See Printer no power serviceSee Waste toner feed service See Service error codes on Print quality symptom table See Mottle service check on See Residual image serviceSee Insufficient gloss service See Back stain service check on Printer service checks Yellow developer clutch service check Interlock 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 Developer motor service check See DeveloperMotor removal 4-32. Go Switch locations on On page 4-70for steps to See Engine Board cage4-57. Go Main motor service check Fuser 4-38. Go AssemblyMain motor Board removal Power supply fan service check Power supplyInterlock switch Fan removal on Fuser fan service check Interlock switch Cover assemblySee Rear Locations on Removal on Laser 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 Toner empty sensor receiver-TTR service check See Engine controllerToner sensor Receiver Hvps connection service check Lower feed unit secondary paper assembly service check Right cover removal on Removal on See Engine Fuser thermistor service checkSee Fuser assembly 921,922,923,924,925-Fuser assembly service check 930,931,932-Laser unit assembly service check Laser unitPrinthead Removal on 4-24. Go Duplex connection error 1 service check Duplex connection error 2 service check Transfer belt unit service check Transfer beltUnit removal Bracket For 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 Fuser clutch service check Right cover removal on Clutch OPC belt marker sensor service check Removal on page 4-70forMarker sensor 4-69. If For 5 VDC from pin 11 to Replace faulty High voltage power supply Hvps service check PhotodevelopEr cartridge Photodeveloper Cartridge removal On page 4-11 . Has High 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 Paper guide With cage Removal on Photodevelop Er cartridge Missing photodeveloper cartridge service checkHigh voltage Power supply Missing toner cartridge service check Present sensor Board removal See Toner On page 4-70. If Present sensor OPC belt photodeveloper cartridge drive service check Motor Gear assembly Assembly Removal onPhotodevelop Er cartridge Removal on See Main See Main drive RIP board Removal on Operator panel service checkController board removal On page 4-55. Does Output tray full service check On page 4-70. If AssemblySee Paper exit Board removal See Paper exit 9 to output tray full Paper size sensing service check Left tray guide Printer no power service check Operator Board cage removal on 4-60for See Developer Motor removal Toner feed service checkDeveloper Retract solenoid Drive assembly Cam Removal on Toner low/empty service check On page 4-70. Does error See EngineSensor sender 4-35and Transfer roller missing service check Hvps cage4-62and Registration 5021-0XX Tray empty service check See Paper guide C Assembly removal on Paper guideOn page 4-70. If Paper guide Waste toner bottle service check Waste tonerBottle holder Bottle holder removal on Waste toner feed service check Registration assembly removal on Paper feed service checksPrinter paper feed service check 5021-0XX Print quality service checks Background service checkBackground is smeared due to toner spread Photodeveloper cartridge Back stain service check Backside of paper is stained See Photodeveloper cartridge Banding service checkBanding line appears in horizontal direction Black line service check Fine black line appears in printer image Color misregistration service check Color misregistration between two colors Transfer belt unit removal on Insufficient fusing service check Printed image is partially missing Insufficient gloss service check Gloss on paper is not sufficient Jitter service check Main motor assembly removal onAssembly. See Developer drive Cartridge removal on Missing image at edge service check Image has missing or peeling toner at edge Mixed color image service check Mixed color image appearsClutch removal on Toner retract solenoid and cam Mottle service check Voltage power supply HvpsVariation of optical density is found in image See Transfer roller removal on Image of preceding page appears on every other Residual image service checkSee Transfer belt cleaning roller Ribbing service check Light print occurs in right or left side of image Solenoid and cam removal on Toner drop service check Auger removal onWaste toner feeder removal on Removal on page 4-6 . Prior to Toner cartridge Replace faulty toner cartridge Vertical line service check Vertical line appears in printed image Printed image staggers in vertical direction Vertical staggering image service checkLaser unit assembly printhead Vertical white band service check White band appears in vertical direction of printed image White band service check Horizontal white banding creates missing portion of imageTransfer roller removal on See Clutch removal on White line I service check Print quality test pages on White line II service check Belt unit see Transfer belt unit White spot / black spot service checkWhite spot and black spot appear on paper White print service check Reinstall. See Transfer rollerRemoval on page 4-8 . Ensure System. See Toner retract solenoid Wrinkle / image migration service check Uneven density right and left Transfer belt unit Replace faulty transfer belt unit. See Roller specifications Spacing table 5021-0XX Select the Disable Option Disabling download emulations Paper jam sequence Go to Paper jam messages on page 2-22for more information 5021-0XX 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 Setting top margin Print testsSelect Registration Select Top Margin Menu Following hardware tests can be selected from this menu Hardware testsSelect Single or Continuous Parallel wrap test LCD testButton test ROM memory test Dram memory test Serial wrap test Transmit Data Interrupt Error Select Duplex Test Select Duplex Left Margin Duplex testsDuplex left margin Quick disk test Disk test/cleanDevice tests Flash test Printer setup Setting the page countViewing the permanent page count Select either Color Page Counts or Mono Page Counts Setting configuration ID Serial number Parallel strobe adjustment Printing the error log Error logViewing the error log Clearing the error log Restore EP factory defaults Exiting diagnostic mode 5021-0XX Removal and cleaning precautions Repair information During replacement Handling the printed circuit boards with MOS ICsDuring transportation/storage During inspection Parts not to be touched Photodeveloper cartridgeHandling Printer removal procedures Precautions to take before maintenance work CRU/FRU and supplies removals Cleaning roller cover removal Transfer belt cleaning roller removal Transfer belt unit removal Transfer roller removal Fuser assembly removal Waste toner bottle removal Open front cover Remove waste toner bottle Photodeveloper 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 removal 5021-0XX Laser unit assembly printhead removal Left cover removal 5021-0XX Laser unit fan assembly removal Erase lamp removal 5021-0XX Front door interlock switch removal Right side removals 5021-0XX Front door interlock switch with bracket Developer motor removal Developer drive assembly removal Waste toner bottle holder removal 5021-0XX 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 on Remove main drive gear assembly from printer Waste toner feeder removal 5021-0XX Rear removals Bracket assembly removal RIP board removal Paper 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 on Left side removals Operator panel cable removal Remove left cover. See Left cover removal on Engine controller board removal 5021-0XX RIP board cage removal Remove ducting High voltage power supply Hvps removal Disconnect all connectors from Hvps Repair information Low voltage power supply Lvps with cage removal 5021-0XX Remove HVPS. See High voltage power supply Hvps removal on Hvps cage removal Toner present sensor removal Remove four screws C remove Hvps cage Toner sensor receiver removal Toner retract solenoid and cam removal Left 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 Printer Part name Description Options Electronic components Sensor locations TNK Printer circuit board locations Name Function Fan/motor locations Interlock switch locations Solenoid/clutch locations Fbcl Toner retract Symbol and part name table Symbol Part name LDU 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 DCN1 5021-0XX OAD1 OAD2 Sgnd Engine controller board I2CN-I/O board DCN3 DCN3 5021-0XX 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 DCN21 Lvps ACN5-Engine controller board Lvcn No connection Engine controller board POCN-LVPS ACN3 ACN3 Board DCN4-Toner retract solenoids DCN4 Board DCN15-Toner present sensor, erase lamp 5021-0XX Board DCN5-Photodeveloper OPC marker sensorBoard DCN8-Laser fan Tleschk Sgnd Board DCN16-Sensors DCN16 Board DCN7-Rear cover assembly DCN7 Htfanerr DCN10 DCLCON-N 5021-0XX Board DCN11-Developer motor Board DCN12-Main motor Mmenc MMREV-N Mmgain Mmovld Engine board LCN-Printhead LDU LDU Sgnd SCMRDY-N Scmclk Pgnd SCMON-N Board DCN14-Lower feeder unit DCN14 LFCN-CHK-N Board DCN19-Paper size sensor and temperature thermistor DCN19 Fuser connector-LVPS 120V Printer Fuser connector-LVPS 240V Printer Engine controller board FUCN-fuser Lvps ACN4-Duplex unit Dupl and duplex power 5021-0XX Engine controller board DPCN-Duplex unit Dupl Duplex Preventive maintenance 5021-0XX How to use this parts catalog Parts catalog Assembly 1 Base printer Assembly 1 Base printer Index Units Description Assembly 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 Sdram Assembly 9 Miscellaneous/Options Index Paper transportation system 5021-0XX 5021-0XX Part number index 5021-0XX 5021-0XX 5021-0XX