Samsung SCX-4100 specifications Engine F/W, Drive, Transfer, Feeding

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Summary of Product

4.5 Engine F/W

4.5.1 Feeding

If feeding from the cassette the drive of the pickup roller is controlled by controlling the pick-up solenoid. The on/off of the solenoid is controlled by controlling the general output port or the external output port. If feeding from the manual feeder the set decides to feed the paper according to the operation of the manual sensor, and by driving the main motor, insert the paper in front of the feed sensor. When paper moves the occurrence of a paper jam is judged as below.

4.5.1.1 Jam 0 – Jam in Feed area

•After a page was picked up, paper did not enter the unit due to a paper misfeed.

•After a page was picked up, paper entered but it did not reach the feed sensor in certain time due to slip, etc.

•After a page was picked up, if the feed sensor is not on try to pick up again. After retrying if the feed sensor is still not on after certain time, it is Jam 0.

-this indicates that the leading edge of the paper doesn't pass the feed sensor within a certain time.

•Even though the paper reaches the feed sensor, the feed sensor does not turn on.

-this indicates that the leading edge of the paper already passed the feed sensor or that the sensor is faulty.

4.5.1.2 Jam 1 – Jam inside the print engine

•After the leading edge of the paper passes the feed sensor, the trailing edge of the paper does not pass the feed sensor within certain time. (During this time the feed sensor cannot be Off)

•After the leading edge of the paper passes the feed sensor, the paper does not reach the exit sensor within a certain time. (The exit sensor cannot be On during this time)

-There is already paper between the feed sensor and the exit sensor.

4.5.1.3 Jam 2 – Jam in the Exit area

•After the trailing edge of the paper passes the feed sensor the trailing edge of the paper does not pass the exit sensor within certain time.

4.5.2 Drive

The main motor drives the paper feed, developing unit and the Fuser It is driven by software which controls the acceleration, constant speed and deceleration profiles. The Motor is managed with an AN44060 driver IC and controlled by step and enable signals from the CPU.

4.5.3 Transfer

The charging voltage, developing voltage and the transfer voltage are controlled by PWM (Pulse Width Modulation). Each output voltage is changeable according to the PWM duty cycle. The transfer voltage used when the paper passes the transfer roller is decided by environment recognition. The resistance value of the transfer roller changes due to the surrounding environment in the room or within the set, this change in resistance in turn changes the value of the voltage due to loading. This voltage is fed back into the set through the A/D converter. Based on this fed back value the PWM cycle is changed to maintain the required transfer voltage Page 4-10 has a different chip number Which is correct

Service Manual

4-16

Samsung Electronics

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Contents Specifications PrecautionsTroubleshooting Block DiagramHttp//itself.sec.samsung.co.kr Safety 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 partESD Precautions Tool for Troubleshooting Acronyms and Abbreviations IPC Select a location for the printer 1 A4 5% Pattern Sample Pattern for the Test2 A4 2% Pattern 3 A4 IDC 5% Patten Memo General Specifications SpecificationsScan Specification Print SpecificationCopy Copy SpecificationPaper Handiling Specification Whql Other SpecificationMemo Front View Printer ComponentsRear View Control Panel System Layout Transfer Ass’y Paper Feed MechanismDrive Ass’y Fixing PartFuserScanner Unit Safety Relevant FactsScan Image Controller CIS Driver CircuitLSU Laser Scanner Unit Toner Cartridge Main PBA Flash Memory Asic Chorus2Sdram Sensor input circuitPaper Exit Sensing Paper Feeding, Toner Cartridge SensingCover Open Sensing DC FAN / Solenoid DriverSmps & Hvps HVPSHigh Voltage Power Supply Rated Power Output Smps Switching Mode Power SupplyConsumption Power Length of Power Cord 1830 ± 50mm Power Switch FittedFeature Fuser AC Power ControlEnvironment Condition Safty RequrementDrive Engine F/WTransfer Feeding5 LSU FusingHeat Lamp Method Memo Releasing Plastic Latches General Precautions on DisassemblyWhenever servicing the machine, you must perform as follows Front and Rear Cover Units Side Covers Remove Scanner Ass’y 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 LSU Exit RollerFan Engine Shield Ass’y Smps Transfer Roller Feed Roller Remove the Feed Roller and Feed Roller1, as shown below Pick Up Roller & Solenoid Memo To enter the Engine Test Mode Engine Test ModeDiagnostic To enter the Engine Test modePaper 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 ImageVertical Black Lines and Bands Printing Problems Causes and SolutionsVertical White Line Black/White Spot Horizontal Black BandsDark 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 Precautions on Safe-keeping of Toner Cartridge Toner Cartridge ServiceService for the Life of Toner Cartridge Standard of guarantee for consumable partsEnded Signs and Measures of Poor toner cartridgeFault Signs Cause & Check Solution Fault Signs Cause & Check Solution Ghost & Image Printer is not working Software Problems Causes and SolutionsNot working with the message insufficient printer Abnormal Printing How to delete the data in the spool manager Spool ErrorMemo Exploded Views and Parts List Main Assembly Main Assembly Parts List Frame Assembly Description SEC.Code ’ty Remark Frame Unit Assembly Parts ListFrame 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 ’ty Remark Middle Cover Unit Assembly Parts ListDrive Unit Assembly Parts List Drive Unit AssemblyCassette Unit Assembly Cassette Unit Assembly Parts List Block Diagram 10.10Connection Diagram
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