Xerox Phaser 3120 specifications Defective motor operation, No Power

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TROUBLESHOOTING

4.4.8 Defective motor operation

	• Description	Main motor is not driving when printing, and paper does not feed into the printer, resulting 'Jam 0'.

		Check and Cause		Solution

1.	Motor harness or sub PCB may be defective.		1.	Check the motor harness, replace it, if defective.
2.	Perform DCU diagnostic code 00 and Check the motor		2.	Replace the SMPS, if necessary.
	operation.

4.4.9 No Power

	• Description	When system power is turned on, all lamps on the operator panel do not come on.

		Check and Cause		Solution

1.	Check if the power input and SMPS output are normal.		1.	Replace the power supply cord or SMPS.
2.	Check the inferiority of LED-Panel on the front-cover if		2.	Replace the control board.
	the LED of Panel does not appear after normal warming-
	up.
			3.	Replace the LED-panel.

4-20Service Manual

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Contents Laser Printer Precautions Precaution related noxious material Precaution related electric shock or firePrecaution related handling the machine Precaution when assembly/disassemblyESD Precautions Tool for Troubleshooting DCUDiagnostic Control Unit DriverSpecifications General SpecificationsElectrical Specification Controller SpecificationEnvironmental Range Paper Handling Specifications Toner Cartridge DeveloperSpecifications Releasing Plastic Latches Whenever servicing the machine, you must perform as followsTop Cover Fuser Exit Roller LSUFan Driver Ass’yEngine Shield Ass’y Main PBASmps Transfer Roller Feed Roller Pick Up Roller SolenoidTroubleshooting How to use DCU 4.1.1 DCU SetupCode Error CodeNormal Code Self Diagnostic Mode Code Description13 THV+ TRIGGER. ALL HV Self Test Button Functi on Enter Up/ Down Stop Remar kVertical Black Line and Band Bad imageVertical White Line Horizontal Black Band Black/White SpotLight Image Dark Image or a BlackUneven Density BackgroundGhost Satins on the Face Satins on Back Blank Page Print outWrong Print Position Bad discharge2 JAM 3 JAM 4 JAMMulti-Feeding Paper rolled in the FuserPaper rolled in the Toner Cartridge OPC Drum All LEDs blinking Scan Error All LEDs blinking Fuser ErrorMalfunction Paper Empty Not function of the gear of the fuser due to melting awayPaper Empty without indication No lamp on when the cover is open Cover OpenNo Power Defective motor operationVertical Line Getting Curved Toner Cartridge Service Precautions on Safe-keeping of Toner CartridgeService for the Life of Toner Cartridge Redistributing TonerSigns and Measures at Poor toner cartridge ImageFault Signs Cause & Check Solution White Black spot Bad Environment of The Software Printer is not workingUtilities program Abnormal Printing Spool Error How to delete the data in the spool managerExploded Views and Parts List Main AssemblyExploded view Main Assembly Parts List Frame Assembly Exploded view Frame Assembly Parts List SHAFT-FEED Idle Driver Unit Parts List Driver Unit Exploded viewFuser Unit Exploded view Fuser Unit Parts List Cassette Unit Exploded view Cassette Unit Parts List Diagram 3130Fuser ASS’Y Connection Diagram Phaser ComputerSchematic 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