Samsung SCX-4200 Functional Requirements of Toner Cartridge, Functional Requirements of OPC Drum

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System Overview

3.3.8 Functional Requirements of Toner Cartridge

3.3.8.1 Installation Toner Cartridge

The engine of the Eiger doesn’t check it but the main f/w checks it. The method to check whether it is new or old is the crum. The crum stores the ID, the opc cycle, the toner consumption and so on.

3.3.8.2 Toner Save

This function is to save the toner consumption. The methods to save toner are three. One is to modulate the video data by lookup table in the main f/w; another is to modulate the DEV voltage in the engine f/w. Of course, the two methods can be used by compounded each other. And the last method is controlling the power of laser diode.

3.3.9 Functional Requirements of OPC Drum

3.3.9.1 Clean OPC Drum

To clean the contamination of the OPC drum, the remnants of toner should be removed.

Manual: There is the function that the user can use anytime. When user selects this function, the engine receives the OPC cleaning command from the main system, and then performs the cleaning processing.

There are two methods to clean the OPC. One is the minus clean mode, and the other is the plus clean mode. Minus clean mode: Supplying minus voltage to transfer roller for removing toner with negative pole.

Plus clean mode: Supplying plus voltage to transfer roller for removing toner with plus pole. The developer team presents the cleaning process.

3.3.10 Functional Requirements of Fan Operation

The fan is always driven except a sleep mode and a special condition to cool the inner temperature of the machine or LSU. When the engine becomes the error mode, the engine stops the fan operation. However, when the engine enters the sleep mode, the engine stops the fan operation after 5minutes because of toner fixing. But it may make an exception in some status.

The Fan activated at that time warmming_up and printing.

3.3.11 Door Open

When the cover is open, the engine detects the status and stops all functions. As a next step, it informs an error message of the main system and then the error message is displayed at LCD window. If the cover is closed, the engine operates the warm-up process.

3.3.12 No paper

Operation: The recording paper has run out. Engine notify to the printer system. And then the error message is displayed at LCD window.

To remove the error: When the error is happened, if the user loads the paper in the paper feeder, then the error is removed. The developer team presents the cleaning process.

Samsung Electronics

Service Manual 3-27

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Contents Digital Laser MFP Key FeaturesVersion no Contents Troubleshooting Disassembly and ReassemblySchematic Diagram Block diagramExploded Views & Parts List Connection DiagramSafety Warning PrecautionsToxic material Electric Shock and Fire Safety PrecautionsAssembly / Disassembly Precautions Handling PrecautionsDisregarding this warning may cause bodily injury Be careful with the high temperature partWhen you move the printer Ensure the printer is installed safelySuper Capacitor or Lithium Battery Precautions ESD PrecautionsProduct Overview Product SpecificationGeneral Specifications SpecificationsScan Specification Print SpecificationCopy Copy SpecificationPaper Handiling Specification Accessory Items Other SpecificationFront View System OutlineSensor Control Panel Scan Part System LayoutFixing PartFuser Paper Feed MechanismTransfer Ass’y Drive Ass’yScan Image Controller Safety Relevant FactsScanner Unit Pressure rollerLSU Laser Scanner Unit Toner Cartridge CPU Part H/W Structure and DescriptionsIptop Micom controller ConfigurationScan Part Ope PannelAsic Printer SectionCPU Unit Chorus 2 Block DiagramSmps & Hvps Copier PartHvps High Voltage Power Supply Remark Smps Switching Mode Power SupplyPrinting CH1+5V CH2+24V CH3+24VS SystemFuser AC Power Control Architecture S/W Structure and DescriptionsPrint Interface Module Power on Initial Module2 S/W Overview Engine Print Processing Control ModulePaper Size Engine Unit Control ModulePaper Type Elapsed Printing Time Print ModeFunctional Requirements of Fixing Unit Fuser Handling Accumulated Printing PagesTemperature 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 6.2 THV Functional Requirements of Power Save ModeFunctional Requirements of Hvps Control 6.1 MHVDoor Open Functional Requirements of Toner CartridgeFunctional Requirements of OPC Drum Functional Requirements of Fan OperationPaper Jam1 Checking Paper jamOut Bin Tray Full Paper JamOver Heat Error TemperatureOpen Heat Error Low Heat ErrorLSU Error To enter the Engine Test mode Engine Test ModeTo enter the Engine Test Mode DiagnosticPaper Path Paper Tray Clearing Paper JamsPaper Exit Area Manual Feeder Fuser Area or Around the Toner CartridgeClearing the Memory Printing the System Data ListClearing the Drum LCD Status Display by Each Error Consumables and Replacement PartsRoller Defective image Typical defect Periodic Defective ImageDisplay Meaning Suggested solutions Error MessageDirect 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 Drive Assy 13 FanMain PBA Engine Shield AssySmps Crum PCB Transfer Roller Feed Roller Remove the Feed Gear1 Assy, as shown below Pick Up Roller & Solenoid Disassembly and Reassembly Vertical White Line Printing Problems Causes and SolutionsCheck and Cause Solution Vertical Black Lines and BandsBlack/White Spot Horizontal Black BandsDescription Digital Printer Dark Image or a Black Light ImageBackground Uneven DensityGhost Digital Printer Ghost Stains on the FaceBlank Page Print out Stains on BackWhite Copy Copy ProblemsBlack Copy Defective Image Quality Abnormal noiseWrong Print Position Paper Feed problems Causes and Solutions2 JAM 4 JAM 3 JAMPaper rolled in the fuser Multi-FeedingPaper rolled on the OPC Drum Fuser Error Printer Faults Causes and SolutionsLSU Error Paper Empty Fuser gear melts due to overheating causing Paper JamCover Open Paper Empty without indicationNo error message when the cover is open Defective motor operation No PowerPrinted Vertical Lines become curved Standard of guarantee for consumable parts Toner Cartridge ServicePrecautions on Safe-keeping of Toner Cartridge Service for the Life of Toner CartridgeSigns 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 How to delete the data in the spool manager Spool ErrorOPE 7Block Diagram 7.1 System Block DiagramExploded 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 9Connection 9.1 SCX-4200 Connection Diagram10.1 Main Board1/7 Schematic DiagramsMain 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 Tweezers Tool for TroubleshootingVacuum Cleaner Spring Hook DriverAcronyms and Abbreviations IPC Select a location for the printer 11.4 A4 ISO 19752 Standard Pattern
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