Lexmark 4036-304 manual Troubleshooting, Power does not come on

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4036-304

Troubleshooting

The tables in this section provide detailed troubleshooting information.

The Power does not come on

	Cause	Relevant	Check *	Action
	Cause	Unit	Check *	Action
		Unit

	Unplugged	None	Visual check	Insert the ac
	from outlet			plug into the
				outlet.

	AC power	LVPS	Visual check	Insert the ac
	unplugged at			cable into
	power supply			power supply.

	Power switch	None	Visual check	Turn the power
	is OFF			switch on.

	Power supply	None	Visual check	Connect the
	power			connector.
	distribution
	board
	connection
	failure

	Power supply	LVPS	Tester check	Replace the
	output voltage		the LVPS	power supply.
	failure		(+5V +12V,
			+24V, GND)

	Power	Power	Tester check	Replace the
	distribution	distribution	(+5V, GND)	failed power
	board	board		distribution
				board.

	MFD	MFD	None	If problem still
	controller	controller		exists, replace
	board	board		MFD controller
				board.

*Check explains how to check the failed item.To do a visual check observe the part or observe the offline test display on the front panel. To do a tester check, check the voltage levels of the relevant units. (See Connector Locations.)

Problem Solving 2-7

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Contents X4500 Scanner 4036-304 4036-304 Edition May Table of Contents Index Safety Information Safety InformationConsignes de Sécurité Norme di sicurezzaPautas de Seguridad SicherheitshinweiseInformaçõ es de Seguranç a Informació de Seguretat 4036-304 Product Features Ease of Use Service GuidelinesOverview Product DescriptionNetwork Scanning Digital Copier and Full-function Fax MachineDuplex Scanning through the Auto Document Feeder ADF Scanner Product SpecificationsADF Mechanical Operation Theory of Operation System DescriptionFlatbed Operation Auto Document Feeder Operation External View Scanner Mechanism Overview and LocationsInternal Components Abbreviations 4036-304 Error Codes MFD Controller Errors Problem SolvingMFD Error 31 No hard drive Error 51 Not enough Scanner Errors 4036-304 Power does not come on TroubleshootingCCD Pcba Scan module does not move to lock positionPcba Scan module does not move to the home positionReading is not performed Scan module does not move to the flatbed positionLarge jitter Image does not appearReading position deviation Image unclear Frequent paper jam, double feed or skew Strange Sound Generated flatbedStrange sound generated ADF 4036-304 Cleaning Cover and Glass MaintenanceTouch Screen ADF UnitRemovals Parts Replacement Maintenance ToolsCCD Board Screws ADF Snap-in Pad Module Removal and Mounting ADF Cover Removal Document Cover RemovalADF Optical CCD Unit Removal ADF Unit Upper and Lower Unit Removal 4036-304 User Interface Removal 4036-304 4036-304 Upper Housing Removal 4036-304 Flatbed CCD Optical Unit Removal Remove the upper housing. Go to Upper Housing Removal on4036-304 Carriage Belt Pulley Assembly Removal Carriage Motor Assembly RemovalMFD Controller Cage Removal 4036-304 4036-304 4036-304 Remove the component you want from within the MFD cage Main Control Board Removal 4036-304 Main Scanner Board Connector LocationsMFD Controller Cage Low Voltage Power SupplyParts Catalog Assembly 1 Upper Scanner Asm Part Units Description Index Number Assembly 2 Lower Scanner Assembly 2 Lower Scanner Assembly 2 cont. Lower Scanner Assembly 2 cont. Lower Scanner 4036-304 Part Numbers Index4036-304