Xerox Phaser 3120 specifications Bad discharge, Wrong Print Position, 2 JAM

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TROUBLESHOOTING

4.3bad discharge

4.3.1Wrong Print Position

•Description Printing begins at wrong position on the paper.

Check and Cause	Solution

Wrong sense time caused by defective feed sensor	Replace the defective actuator
actuator.

4.3.2 JAM 0

		L S U
Fuser		CR	Toner Cartridge
EXIT	PR	OPC	DR SR
Sensor	PR
		TR	PTL Feed	FR	MP Sensor
		TR	Sensor	FR

R/

CK

PI

•Description

1.Paper is not exited from the cassette.

2.Jam-0 occurs if the paper feeds into the printer.

Empty Sensor

	Check and Cause		Solution

1.	Check the Solenoid by using DCU diagnostic mode	1.	Replace the solenoid.
	06.
2.	Check if the pad is loose due to bad sealing of the	2.	Replace the side-pad Assembly L or R, if necessary.
	side-pad.
3.	Check the surface of the roller-pickup for foreign mat-	3.	Clean with soft cloth dampened with IPA(Isopropyl
	ter.		Alcohol) or water.
4.	If the paper feeds into the printer rand Jam 0 occurs,	4.	Replace the SMPS-HVPS and/or Sensor.
	perform DCU to check feed-sensor of the engine
	board.

Service Manual 4-13

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Contents Laser Printer Precautions Precaution related electric shock or fire Precaution related noxious materialPrecaution when assembly/disassembly Precaution related handling the machineESD Precautions DCUDiagnostic Control Unit Driver Tool for TroubleshootingGeneral Specifications SpecificationsController Specification Electrical SpecificationEnvironmental Range Toner Cartridge Developer Paper Handling SpecificationsSpecifications Whenever servicing the machine, you must perform as follows Releasing Plastic LatchesTop Cover Fuser LSU Exit RollerDriver Ass’y FanMain PBA Engine Shield Ass’ySmps Transfer Roller Feed Roller Solenoid Pick Up RollerHow to use DCU 4.1.1 DCU Setup TroubleshootingError Code CodeNormal Code Code Description Self Diagnostic Mode13 THV+ TRIGGER. ALL HV Functi on Enter Up/ Down Stop Remar k Self Test ButtonBad image Vertical Black Line and BandVertical White Line Black/White Spot Horizontal Black BandDark Image or a Black Light ImageBackground Uneven DensityGhost Satins on the Face Blank Page Print out Satins on BackBad discharge Wrong Print Position2 JAM 4 JAM 3 JAMPaper rolled in the Fuser Multi-FeedingPaper rolled in the Toner Cartridge OPC Drum All LEDs blinking Fuser Error All LEDs blinking Scan ErrorMalfunction Not function of the gear of the fuser due to melting away Paper EmptyPaper Empty without indication Cover Open No lamp on when the cover is openDefective motor operation No PowerVertical Line Getting Curved Precautions on Safe-keeping of Toner Cartridge Toner Cartridge ServiceService for the Life of Toner Cartridge Redistributing TonerImage Signs and Measures at Poor toner cartridgeFault Signs Cause & Check Solution White Black spot Printer is not working Bad Environment of The SoftwareUtilities program Abnormal Printing How to delete the data in the spool manager Spool ErrorExploded Views and Parts List Assembly MainExploded view Main Assembly Parts List Frame Assembly Exploded view Frame Assembly Parts List SHAFT-FEED Idle Driver Unit Exploded view Driver Unit Parts ListFuser Unit Exploded view Fuser Unit Parts List Cassette Unit Exploded view Cassette Unit Parts List 3130 DiagramFuser ASS’Y Connection Diagram Computer PhaserSchematic Diagrams Phaser 3130 Main Circuit Diagram 2/9 Phaser 3130 Main Circuit Diagram 3/9 Phaser 3130 Main Circuit Diagram 4/9 Phaser 3130 Main Circuit Diagram 5/9 Phaser 3130 Main Circuit Diagram 6/9 Phaser 3130 Main Circuit Diagram 7/9 Phaser 3130 Main Circuit Diagram 8/9 Phaser 3130 Main Circuit Diagram 9/9 Phaser 3120 Main Circuit Diagram 1/5 Phaser 3120 Main Circuit Diagram 2/5 Phaser 3120 Main Circuit Diagram 3/5 Phaser 3120 Main Circuit Diagram 4/5 Phaser 3120 Main Circuit Diagram 5/5 Hvps Circuit Diagram 1/2 Hvps Circuit Diagram 2/2 Smps Circuit Diagram Other PBA Circuit Diagrams