Lexmark 4200 Series manual Scan/copy quality service check, To the System board removal on

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4413-XXX

Scan/copy quality service check

	FRU / Function	Action

1	Scanned images	Check the lighter/darker settings to see if it is
	are faded, or	correct.
	colors are dull,
	blurry, or fuzzy.	• From the control panel
	Images are	• From the Scan & Copy Control Program
	slanted or
	crooked and the
	straight lines in	Check to see if there is any dust or debris on the
	the image appear	glass lens of the CIS. This may cause a poor
	to be jagged or	image.
	uneven.

2	Blank copies	If there are blank copies found, make sure that the
		original document is facing down.
		Check the print cartridges to see if they need to be
		cleaned or replaced.

3	Scanning error	Ensure the USB cable is correctly installed.
		Ensure the USB cable is proper for USB
		specification, version 1.1.
		Start the system after TWAIN driver is reinstalled.
		If error still occurs, replace the system board. Go
		to the “System board removal” on page 4-19.

Diagnostic information 2-17

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Contents Lexmark 4200 Series Japanese P/N 12G9335 Table of Contents Repair information Consignes de sécurité Safety informationSicherheitshinweise Norme di sicurezzaInformaçõ es de Seguranç a Pautas de SeguridadInformació de Seguretat 4413-XXX Definitions PrefaceGeneral information Specifications Print enginePrinthead ADF FacsimileScanner Power and sizeAbbreviations 4413-XXX Diagnostic information Power-On Self Test Post sequenceStart Post symptom table Symptom tables To the Scanner motor with gear Assembly service check onSystem board removal on Go to the System board removalGear assembly service check on Go to the CIS assembly serviceProblems on Go to the Paper path serviceCarrier transport service check Service checksGo to the Power service check Go to the Print quality serviceEngine. Go to the Print engine removal on Assembly with belt removal on page 4-18. IfCIS assembly service check To the Maintenance station removal onImage Sensor removal on Scanner motor with gear assembly service check Gear assembly removal onControl panel problems on Station removal on Maintenance station service checkPaper feed service check Run the Power-On Self Test Post sequenceBoard Go to the System board removal on Feed motor assembly with gears removal on CIS white roller assembly removal on Paper path service check Removal on Power service checkMaintenance station removal on Print quality service checkWith belt removal on Go to the System board removal onCarrier transport area. Check the following To the System board removal on Scan/copy quality service checkFax/telephone communication service check Drive feed roller assembly Diagnostic aidsTheory of mechanism Scanner mechanismDocument sensors Contact Image Sensor CIS4413-XXX Set up options 4413-XXX Handling ESD-sensitive parts Repair informationAdjustments Removal proceduresReleasing plastic latches Removals General precautions on removalsCIS white roller assembly removal Top cover assembly removal Rollers drive feed roller assembly, exit shaft removal 4413-XXX 4413-XXX 4413-XXX CIS Contact Image Sensor removal Scanner motor with gear assembly removal 4413-XXX Control panel assembly removal 4413-XXX 4413-XXX Print engine removal Maintenance station removal Remove print engine. See Print engine removal on Carrier assembly with belt removalSystem board removal Exit rollers removal Remove system board. See System board removal on Large feed roller assembly with gear removal4413-XXX Paper feed motor assembly with gears removal Handset and cradle removal Carrier transport motor removalSystem board Connector locations4413-XXX Lubrication specifications Preventive maintenance4413-XXX Parts catalog How to use this parts catalogAssembly 1 Main assembly Asm Part Units Description Index Number Assembly 1 Main assemblyAssembly 2 Base unit Assembly 2 Base unit Assembly 3 Engine Assembly 3 Engine 4413-XXX Repair information IndexPost Part Numbers