Samsung Understanding LSU Errors and Solutions for Printers

Page 46

System Overview

3.3.16 LSU Error

The errors related to LSU are as follows:

By LReady: When the printing is started, the engine drives the polygon motor of LSU. After the specified time is elapsed, if the motor is not in a ready status, the engine detects the error that the polygon motor is not in a ready status. If this error happens, the engine stops all functions and keeps it at the error state. Also, the engine informs the error status of the main system and the error message is displayed at LCD window to inform the error status of the user.

By Hsync: When the polygon motor is ready, the LSU sends out the signal called Hsync and used to synchronize with each image line. So, if the engine does not detect consecutively the signal for a fixed time, it defines the Hsync Error. If this error happens, the engine stops all functions and keeps it at the error state. Also, the engine informs the error status of the main system and then the error message is displayed at LCD window to inform the error status of the user.

3-30Service Manual

Samsung Electronics

Image 46

Contents Key Features Digital Laser MFPVersion no Contents Disassembly and Reassembly TroubleshootingConnection Diagram Block diagramExploded Views & Parts List Schematic DiagramPrecautions Safety WarningElectric Shock and Fire Safety Precautions Toxic materialHandling Precautions Assembly / Disassembly PrecautionsEnsure the printer is installed safely Be careful with the high temperature partWhen you move the printer Disregarding this warning may cause bodily injuryESD Precautions Super Capacitor or Lithium Battery PrecautionsProduct Specification Product OverviewSpecifications General SpecificationsPrint Specification Scan SpecificationCopy Specification CopyPaper Handiling Specification Other Specification Accessory ItemsSystem Outline Front ViewSensor Control Panel System Layout Scan PartDrive Ass’y Paper Feed MechanismTransfer Ass’y Fixing PartFuserPressure roller Safety Relevant FactsScanner Unit Scan Image ControllerLSU Laser Scanner Unit Toner Cartridge H/W Structure and Descriptions CPU PartIptop Ope Pannel ConfigurationScan Part Micom controllerPrinter Section AsicChorus 2 Block Diagram CPU UnitCopier Part Smps & HvpsHvps High Voltage Power Supply Smps Switching Mode Power Supply RemarkCH1+5V CH2+24V CH3+24VS System PrintingFuser AC Power Control S/W Structure and Descriptions ArchitectureEngine Print Processing Control Module Power on Initial Module2 S/W Overview Print Interface ModulePaper Size Engine Unit Control ModulePaper Type Accumulated Printing Pages Print ModeFunctional Requirements of Fixing Unit Fuser Handling Elapsed Printing TimeTemperature in the Warm-Up mode 3.6Temperature in the Stand-By mode3.8Environmental Index LSU Ready Check Functional Requirements for LSU ControlSequence of LSU module Functional Requirements of Environment Recognition Air Temperature Sensor Environment RecognitionTransfer Roller 6.1 MHV Functional Requirements of Power Save ModeFunctional Requirements of Hvps Control 6.2 THVFunctional Requirements of Fan Operation Functional Requirements of Toner CartridgeFunctional Requirements of OPC Drum Door OpenPaper Jam Checking Paper jamOut Bin Tray Full Paper Jam1Low Heat Error TemperatureOpen Heat Error Over Heat ErrorLSU Error Diagnostic Engine Test ModeTo enter the Engine Test Mode To enter the Engine Test modePaper Path Clearing Paper Jams Paper TrayPaper Exit Area Fuser Area or Around the Toner Cartridge Manual FeederClearing the Memory Printing the System Data ListClearing the Drum Consumables and Replacement Parts LCD Status Display by Each ErrorPeriodic Defective Image Roller Defective image Typical defectError Message Display Meaning Suggested solutionsDirect KEY ڌډڞڪګڴٻڟڤڭڠڞگٻڦڠڴ Releasing Plastic Latches General Precautions on DisassemblyWhenever servicing the machine, you must perform as follows Front Cover Rear Cove DC Fan Right Side Cover Left Side Cover Scanner Unit Remove the two screws securing the Scan Upper Unit Scan Motor Assy OPE Unit Middle Cover Unit Fuser Unwrap the Thermistor Harness, as shown below Exit Roller 12 LSU 13 Fan Drive AssyEngine Shield Assy Main PBASmps Crum PCB Transfer Roller Feed Roller Remove the Feed Gear1 Assy, as shown below Pick Up Roller & Solenoid Disassembly and Reassembly Vertical Black Lines and Bands Printing Problems Causes and SolutionsCheck and Cause Solution Vertical White LineBlack/White Spot Horizontal Black BandsDescription Digital Printer Light Image Dark Image or a BlackUneven Density BackgroundGhost Stains on the Face Digital Printer GhostStains on Back Blank Page Print outWhite Copy Copy ProblemsBlack Copy Abnormal noise Defective Image QualityWrong Print Position Paper Feed problems Causes and Solutions2 JAM 3 JAM 4 JAMMulti-Feeding Paper rolled in the fuserPaper rolled on the OPC Drum Fuser Error Printer Faults Causes and SolutionsLSU Error Fuser gear melts due to overheating causing Paper Jam Paper EmptyPaper Empty without indication Cover OpenNo error message when the cover is open No Power Defective motor operationPrinted Vertical Lines become curved Service for the Life of Toner Cartridge Toner Cartridge ServicePrecautions on Safe-keeping of Toner Cartridge Standard of guarantee for consumable partsSigns and Measures of Poor toner cartridge Fault Signs Cause & Check Solution Fault Signs Cause & Check Solution Ghost & Image Printer is not working Software Problems Causes and SolutionsAbnormal Printing Spool Error How to delete the data in the spool manager7Block Diagram 7.1 System Block Diagram OPEExploded Views and Parts List SCX-4200/XAX Main Exploded View Housing Base Exploded View 24 22 Fuser Unit Exploded View Drive Assembly Exploded View Scan Assembly Exploded View OPE Assembly Exploded View Cassette Assembly Exploded View Service Parts ListModel SCX-4200/XAX HOUSING-M-TERMINAL R2SCX-4920N,ABSNH-1 ROLLER-M-EXIT F/UPML-1710,PCGE EXL-911 SCREW-TAPTITEPWH,+,B,M3,L10,NI PLT,SWRC LABELP-NOMBOXCOMMON,XAX,ART,100G,0 CBF HARNESS-PTLML-1710,CBF,UL 1061,2P,2 LCD-DISPLAYXEVVHX1620BHRC9,SCX-5312F Diagram 9Connection 9.1 SCX-4200 ConnectionSchematic Diagrams 10.1 Main Board1/7Main Board2/7 Main Board3/7 Main Board4/7 Main Board5/7 Main Board6/7 Main Board7/7 OPE Circuit Diagram SMPS-110V1/4 SMPS-110V2/4 SMPS-110V3/4 SMPS-110V4/4 SMPS-220V1/4 SMPS-220V2/4 SMPS-220V3/4 SMPS-220V4/4 Driver Tool for TroubleshootingVacuum Cleaner Spring Hook TweezersAcronyms and Abbreviations IPC Select a location for the printer 11.4 A4 ISO 19752 Standard Pattern

Related manuals

Manual 94 pages 15.88 Kb