Samsung SCX-4100 specifications Periodic Defective Image, Roller Defective image Typical defect

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Alignment & Adjustments

6.9 Periodic Defective Image

If a mark or other printing defect occurs at regular intervals down the page it may be caused by a damaged or contaminated roller. Measure the repetition interval and refer to the table below to identify the roller concerned.

No

1

2

3

4

5

6

7

Roller	Defective image	Typical defect
OPC Drum	75.5mm	white spot on black image or black spot
Charge Roller	37.7mm	black spot
Supply Roller	47.8mm	light or dark horizontal image band
Developing Roller	35.2mm	horizontal image band
Transfer Roller	45.3mm	image ghost
Heat Roller	57.1mm	Black spot and image ghost
Pressure Roller	59.7mm	black spot on the backside

	L S U
Fuser	2	Toner Cartridge
6	2
	4	3
7	1	3
7
	PTL	MP Sensor
	5

SCAN PART

1

2

3

4

OPC Drum

Charge Roller

Supply Roller

Developing Roller

5

6

7

Tramsfer Roller

Heat Roller

Pressure Roller

<Rollers Layout>

Service Manual

6-8

Samsung Electronics

Image 65

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 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 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 Drum Printing the System Data ListClearing the Memory LCD Status Display by Each Error Consumables and Replacement PartsRoller Defective image Typical defect Periodic Defective ImageVertical White Line Printing Problems Causes and SolutionsVertical Black Lines and Bands 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 BackBlack Copy Copy ProblemsWhite Copy Defective Image Quality Abnormal noise2 JAM Paper Feed problems Causes and SolutionsWrong Print Position 4 JAM 3 JAMPaper rolled in the fuser Multi-FeedingPaper rolled on the OPC Drum LSU Error Printer Faults Causes and SolutionsFuser 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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