Samsung SCX-4100 To enter the Engine Test Mode, Diagnostic, To enter the Engine Test mode

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Alignment & Adjustments

66. Alignment and Adjustments

This chapter describes some of the main service procedures including:

Using the EDC mode; Clearing paper jam and test patterns.

Much of this chapter is also included in the user's guide.

6.1 Engine Test Mode

The Engine Tests Mode supplies useful functions to check the condition of the engine. It tests the condition of each device and displays the result of the test on the LCD. It is classified into 5 functions (0~4), and are shown below.

6.1.1 To enter the Engine Test Mode

To enter the Engine Test mode

Menu/Exit Darkness	Menu/Exit
Press	in sequence, and the LCD briefly displays

'Engine Test [Diagnostic]',the machine has entered Engine Test Mode.

•To enter a lower menu (Sub menu) Press the Start/Enter key.

•To exit into an upper menu Press the Menu/Exit key.

•To return to the user menu Press the Menu/Exit key.

6.1.2Diagnostic

Main Menu	Engine test				Remark
ENGINE TEST	Motor Test	1	: On, 2 : Off

MTR FAN SOL ETC	PickUp Test	1	: On, 2 : Off

	Fan Test	1	: On, 2 : Off

	Manual Clt Test	1	: On, 2 : Off

	PTL Test	1	: On, 2 : Off
ENGINE TEST	LSU Motor Test	1	: On, 2 : Off
LSU TEST	LSU Hsync Test	1	: On, 2 : Off
	LD Test	1	: On, 2 : Off
ENGINE TEST	Feed Sen Test	Check : Check Start

SENSOR TEST		Next : Next Sensor Check

	Exit Sen Test	Check : Check Start

		Next : Next Sensor Check

	Cover Sen Test	Check : Check Start

		Next : Next Sensor Check

	Empty Sen Test	Check : Check Start

		Next : Next Sensor Check
	Manual Sen Text	Check : Check Start

		Next : Next Sensor Check
ENGINE TEST	Therm ADC 220~85	1	: On, 2 : Off (maintain the fusing temp. 65C~230C)
HEAT TEST
ENGINE TEST	MHV Test	1	: On, 2 : Off (-1550V ± 50V)
HVPS TEST	Dev Bias Test	1	: On, 2 : Off (-430V ± 20V)
	THV EN/NEG Test	1	: On, 2 : Off (-1000V +300V/-150V)
	THV ON (1300V)	1	: On, 2 : Off (+1300V ± 20V)
	THV ADC 1300V	1	: On, 2 : Off
	THV ADC 600V~3550V	1	: On, 2 : Off (Compare each ADC Value)

Service Manual

Samsung Electronics

6-1

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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 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 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 Memory Printing the System Data ListClearing the Drum Consumables and Replacement Parts LCD Status Display by Each ErrorPeriodic Defective Image Roller Defective image Typical defectVertical Black Lines and Bands Printing Problems Causes and SolutionsVertical White Line 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 outWhite Copy Copy ProblemsBlack Copy Abnormal noise Defective Image QualityWrong Print Position Paper Feed problems Causes and Solutions2 JAM 3 JAM 4 JAMMulti-Feeding Paper rolled in the fuserPaper rolled on the OPC Drum Fuser Error Printer Faults Causes and SolutionsLSU 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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