Samsung SCX-4100 Paper Feed Mechanism, Transfer Ass’y, Drive Ass’y, Fixing PartFuser

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Summary of product

4.2.1 Paper Feed Mechanism

The printer has a universal cassette which automatically loads paper and a manual feed which supplies paper single sheet at a time. The cassette has a friction pad which separates paper to ensure single sheet feeding, and it has a sensor, which checks when the paper tray is empty.

-Feeding Method: Universal Cassette Type

-Feeding Standard: Center Loading

-Feeding Capacity: Cassette-250 sheets (75g/m2 , 20lb paper standard) Manual 1 sheet (Paper, OHP, Envelop, etc.)

-Paper detecting sensor: Photo sensor

-Paper size sensor: None

4.2.2Transfer Ass’y

This consists of the PTL (pre-transfer lamp) and the Transfer Roller. The PTL shines a light onto the OPC drum. This lowers the charge on the drum’s surface and improves transfer efficiency.

The transfer roller transfers toner from the OPC drum surface to the paper.

-Life expectancy: Over 60,000 sheets (at 15~30°C)

4.2.3Drive Ass’y

A gear driven power unit. The motor supplies power to the paper feed unit, the fuser unit, and the toner cartridge.

4.2.4 Fixing Part(Fuser)

There are two types of fuser unit:

Q-PID type, developed by Samsung, and only used on 220V Domestic models Heat Lamp type used on 220V Export models and all 110V models.

The Heat Lamp type fuser consists of the Heat Lamp, Heat Roller, Pressure Roller, Thermistor, and Thermostat. It fixes toner to the paper using pressure and heat to complete the printing job.

4.2.4.1 Heat Lamp power cut-off (Thermostat)

The thermostat is a temperature sensing device, which cuts off the power to the heat lamp to prevent overheating fire when the heat lamp or heat roller overheats.

4.2.4.2 Temperature Detecting Sensor (Thermistor)

The Thermistor detects the surface temperature of the heat roller, this information is sent to the main processor which uses this information to regulate the temperature of the heat roller.

4.2.4.3 Heat Roller

The surface of the Heat Roller is heated by the Heat Lamp. As the paper passes between the Heat and Pressure rollers the toner is melted and fixed permanently to the paper. The surface of the roller is coated with Teflon. This ensures that toner does not adhere to the roller surface.

4.2.4.4 Pressure roller

The Pressure Roller mounted under the heat roller, it is made of a silicon resin, and the surface of the roller is tubed with Teflon. This ensures that toner does not adhere to the roller surface.

Service Manual

Samsung Electronics

4-5

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Contents Troubleshooting PrecautionsSpecifications Block DiagramHttp//itself.sec.samsung.co.kr Precautions Safety WarningElectric Shock and Fire Safety Precautions Toxic materialHandling Precautions Assembly / Disassembly PrecautionsBe careful with the high temperature part Disregarding this warning may cause bodily injuryESD Precautions Tool for Troubleshooting Acronyms and Abbreviations IPC Select a location for the printer Sample Pattern for the Test 1 A4 5% Pattern2 A4 2% Pattern 3 A4 IDC 5% Patten Memo Specifications General SpecificationsPrint Specification Scan SpecificationCopy Specification CopyPaper Handiling Specification Other Specification WhqlMemo Printer Components Front ViewRear View Control Panel System Layout Drive Ass’y Paper Feed MechanismTransfer Ass’y Fixing PartFuserScan Image Controller Safety Relevant FactsScanner Unit CIS Driver CircuitLSU Laser Scanner Unit Toner Cartridge Main PBA Sdram Asic Chorus2Flash Memory Sensor input circuitCover Open Sensing Paper Feeding, Toner Cartridge SensingPaper Exit Sensing DC FAN / Solenoid DriverSmps & Hvps HVPSHigh Voltage Power Supply Consumption Power Smps Switching Mode Power SupplyRated Power Output Length of Power Cord 1830 ± 50mm Power Switch FittedEnvironment Condition Fuser AC Power ControlFeature Safty RequrementTransfer Engine F/WDrive FeedingHeat Lamp Method Fusing5 LSU Memo Whenever servicing the machine, you must perform as follows General Precautions on DisassemblyReleasing Plastic Latches Front and Rear Cover Units Side Covers Scanner Ass’y Remove Scanner Ass’yDismantle Scanner Ass’y Spring Pulley Idle ETC Belt Middle Cover FuserHeat Lamp Type Remove 4 screws and divide the Fuser into two parts Exit Roller LSUFan Engine Shield Ass’y Smps Transfer Roller Feed Roller Remove the Feed Roller and Feed Roller1, as shown below Pick Up Roller & Solenoid Memo 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 Drum Printing the System Data ListClearing the Memory Consumables and Replacement Parts LCD Status Display by Each ErrorPeriodic Defective Image Roller Defective image Typical defectVertical White Line Printing Problems Causes and SolutionsVertical Black Lines and Bands Horizontal Black Bands Black/White SpotLight Image Dark Image or a BlackUneven Density BackgroundGhost Stains on the Face Digital Printer GhostStains on Back Blank Page Print outBlack Copy Copy ProblemsWhite Copy Abnormal noise Defective Image Quality2 JAM Paper Feed problems Causes and SolutionsWrong Print Position 3 JAM 4 JAMMulti-Feeding Paper rolled in the fuserPaper rolled on the OPC Drum LSU Error Printer Faults Causes and SolutionsFuser 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 EndedFault Signs Cause & Check Solution Fault Signs Cause & Check Solution Ghost & Image Software Problems Causes and Solutions Printer is not workingNot working with the message insufficient printer Abnormal Printing Spool Error How to delete the data in the spool managerMemo Exploded Views and Parts List Main Assembly Main Assembly Parts List Frame Assembly Frame Unit Assembly Parts List Description SEC.Code ’ty RemarkFrame Unit Assembly Parts ListCont Scanner Unit Assembly Scanner Unit Assembly Parts List Fuser Unit Assembly Fuser Unit Assembly Parts List WASHER-PLAIN Middle Cover Unit Assembly Middle Cover Unit Assembly Parts List ’ty RemarkDrive Unit Assembly Drive Unit Assembly Parts ListCassette Unit Assembly Cassette Unit Assembly Parts List Block Diagram 10.10Connection Diagram
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