Xerox Phaser 3120 specifications Cover Open, No lamp on when the cover is open

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TROUBLESHOOTING

4.4.6 Cover Open

• Description	The ERROR lamp is on even when the print cover is closed.
	Check and Cause		Solution
1. The Hook Lever in the top cover may be defective.		1.	Replace the hook lever, if defective.
2. Check the connector (Engine B’d↔ HVPS) and circuit of		2.	Check the insertion of the Cover Open S/W
the cover switch department in the Main Control board.			Connect.
Perform DCU mode : If Error state '64' occurs, Check the
related codes of the Cover Open Error.
		3.	Replace the Main Control board or Cover Open
			S/W.

4.4.7 No lamp on when the cover is open

• Description	The ERROR lamp does not come on even when the printer cover is open

	Check and Cause		Solution

1. Check the connector(CN8) and circuit of the cover switch		1.	Check the insertion of the Cover Open S/W
department in the Main Control board. Perform DCU			Connect.
mode : If Error state '64' occurs, Check the related codes
of the Cover Open Error
		2.	Replace the Main Control board or Cover Open
			S/W.

Service Manual 4-19

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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 Redistributing Toner Toner Cartridge ServicePrecautions on Safe-keeping of Toner Cartridge Service for the Life of Toner CartridgeImage 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