Samsung SCX-4100 specifications Printer Faults Causes and Solutions, Fuser Error, LSU Error

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Troubleshooting

7.4 Printer Faults – Causes and Solutions

7.4.1 Fuser Error

	• Description	A message "Open Heat Error/Over heat/Heating Error' is displayed in the LCD panel.

		Check and Cause		Solution

1.	Thermostat, fuser power cable or heat lamp is		1.	Replace the whole fuser assembly if the
	open circuit.			thermostat is open circuit.
2.	Thermistor is open circuit.		2.	Replace the whole fuser assembly if the ther-
				mistor sensor is faulty.

3. Heat lamp ON/OFF test

3. Replace the fuser.

4. Drive gear melted

7.4.2 LSU Error

• Description A message "PMOTOR ERROR/HSYNC ERROR' is displayed in the LCD panel.

	Check and Cause	Solution

1.	LSU cable or connector faulty.	Use TECH mode to test the LSU
		- Replace the LSU
2.	LSU motor is faulty.	- Replace a main board if the same error persists after
		replacing a LSU.
3.	Check the HSYNC signal.

Service Manual

7-14

Samsung Electronics

Image 79

Contents Block Diagram PrecautionsSpecifications TroubleshootingHttp//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 Fixing PartFuser Paper Feed MechanismTransfer Ass’y Drive Ass’yCIS Driver Circuit Safety Relevant FactsScanner Unit Scan Image ControllerLSU Laser Scanner Unit Toner Cartridge Main PBA Sensor input circuit Asic Chorus2Flash Memory SdramDC FAN / Solenoid Driver Paper Feeding, Toner Cartridge SensingPaper Exit Sensing Cover Open SensingSmps & Hvps HVPSHigh Voltage Power Supply Length of Power Cord 1830 ± 50mm Power Switch Fitted Smps Switching Mode Power SupplyRated Power Output Consumption PowerSafty Requrement Fuser AC Power ControlFeature Environment ConditionFeeding Engine F/WDrive Transfer5 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 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 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 Standard of guarantee for consumable parts Toner Cartridge ServicePrecautions on Safe-keeping of Toner Cartridge Service for the Life of Toner CartridgeEnded 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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