Lexmark 4402-001 manual Carrier transport area. Check the following

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4402-001

	FRU / Function	Action

6	Paper Feed	Ink smudging and smearing can be caused by
		paper problems or problems in the paper feed
		area.
		Check the following:
		• Correct type of paper is being used. Also check
			the paper for curl or wrinkles.
		•	Feed rollers for wear, dirt, or looseness.
		• Gears for wear or binds.
		•	Paper path for obstructions.

7	Carrier Transport	Blurred print and voids can be caused by problems
		in the carrier transport area. Check the following:
		•	Carrier transport belt for wear.
		•	Carrier guide rod for wear or dirt. If dirty, clean
			and lubricate.
		• Carrier to carrier frame engagement should be
			lubricated with grease P/N 99A0394.
		•	Idler pulley parts for wear, damage, or
			looseness.

8	Alignment	Uneven vertical lines can be adjusted by
		performing the printhead alignment adjustments.
		The user is directed, through the Printer Control
		program, to perform the printhead alignment
		adjustments, when replacing a printhead cartridge.

2-16Service Manual

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Contents 4402-001 4402-001 Table of Contents Assembly 3 Electronics Index Safety Information Consignes de SécuritéNorme di sicurezza SicherheitshinweisePautas de Seguridad Informaçõ es de Seguranç aInformació de Seguretat 4402-001 Preface Power Consumption General InformationScanner Specifications Press this When you want to Button Operator PanelMaintenance Approach AbbreviationsDiagnostic Information Power-On Self Test Post SequenceStart Post Symptom Table Symptom Tables System Board Removal on Go to the CCD Module AssemblyGo to the Gear Train Assembly Go to the Scan/Copy QualityGo to the Power Service Check Go to the Paper Feed ServiceGo to the Paper Path Service Go to the Print Quality ServiceService Checks Carrier Transport Service CheckEngine. Go to the Print Engine Removal on Removal on Assembly Print Engine Removal onTo the Maintenance Station Removal on Cover Sensor Removal on page 4-6. IfCCD Module Assembly Service Check Gear Train Assembly ServiceRemoval on page 4-12 for more Belt/Idler Pulley Assembly Gear Train Assembly Service CheckAssembly Removal on Print Engine Removal onMaintenance Station Service Check Station Removal onPaper Feed Service Check Run the Power-On Self Test Post SequenceEngine Removal on page 4-11 and replace Paper Path Service Check Power Service Check Print Quality Service Check Maintenance Station Removal onGo to the System Board Removal on Carrier transport area. Check the following Scan/Copy Quality Service Check 4402-001 Diagnostic Aids Test4402-001 Repair Information Handling ESD-Sensitive PartsAdjustments Removal ProceduresReleasing Plastic Latches Scanner Lid Assembly Removal Rear Cover RemovalTop Housing Assembly Removal Operator Panel RemovalPaper Support Removal CCD Module Assembly Removal Gear Train Assembly Removal Access Cover Sensor RemovalAccess Cover Removal Right Cover RemovalLeft Cover Removal Middle Frame Removal 4402-001 Print Engine Removal ASF Module Removal System Board RemovalCarrier Removal Encoder Strip RemovalMaintenance Station Removal Belt/Idler Pulley Assembly Print Engine RemovalConnector Locations Units Description4402-001 Preventive Maintenance Lubrication Specifications4402-001 How to Use This Parts Catalog Parts CatalogAssembly 1 Covers Assembly 1 Covers Asm Part Units Description Index NumberAssembly 1 cont. Covers Assembly 1 cont. Covers Assembly 2 Paper Feed, Frame and Carrier Transport Assembly 2 Paper Feed, Frame and Carrier Transport Assembly 3 Electronics Assembly 3 Electronics 4402-001 Index Part Numbers