Samsung SCX-4100 specifications Light Image, Dark Image or a Black

Page 68

Troubleshooting

7.1.5 Light Image

• Description

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

The printed image is light, with no ghost.

	Check and Cause		Solution

1. Toner Save mode enabled		1. Ensure the Toner Save mode is off. Check
			set and driver settings.
2.	Develop roller is contaminated or the	2.	Replace the toner cartridge and try to print
	toner cartridge is almost empty.		out again.
3. Ambient temperature is below than 10°C.		3.	Wait 30 minutes after printer is powered on
			before you start printing.
4.	Bad contact caused by dirty terminals on	4.	Clean the cartridge and set contacts.
	the toner cartridge or set.		Generally clean dirt from inside the set.
5.	Abnormal output from the HVPS.	5. Replace the HVPS if the problems are not
	(Run EDC mode – see sections 6.1.2		solved by the above four instructions.
	and 6.1.3)

7.1.6 Dark Image or a Black

• Description

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

The printed image is dark.

	Check and Cause		Solution
1.	No charge voltage in the engine board.	1.	Check the state of the connector which
			connects the engine board and HVPS.
2.	Charge voltage fault due to bad contact	2.	Clean the high voltage charge terminals.
	between toner cartridge and set contacts.	Note if 1 and 2 do not resolve the problem
			and the problem persists replace the
			HVPS.

3. VD0 signal of the Main PBA is Low state.

3. Replace the LSU Unit or Main PBA.

Service Manual

7-3

Samsung Electronics

Image 68

Contents Precautions SpecificationsTroubleshooting 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 Paper Feed Mechanism Transfer Ass’yDrive Ass’y Fixing PartFuserSafety Relevant Facts Scanner UnitScan Image Controller CIS Driver CircuitLSU Laser Scanner Unit Toner Cartridge Main PBA Asic Chorus2 Flash MemorySdram Sensor input circuitPaper Feeding, Toner Cartridge Sensing Paper Exit SensingCover Open Sensing DC FAN / Solenoid DriverSmps & Hvps HVPSHigh Voltage Power Supply Smps Switching Mode Power Supply Rated Power OutputConsumption Power Length of Power Cord 1830 ± 50mm Power Switch FittedFuser AC Power Control FeatureEnvironment Condition Safty RequrementEngine F/W DriveTransfer 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 Engine Test Mode To enter the Engine Test ModeDiagnostic 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 Toner Cartridge Service Precautions on Safe-keeping of Toner CartridgeService for the Life 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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