Lexmark 4402-001 manual Paper Path Service Check

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4402-001

Paper Path Service Check

Examine the machine for the following before you begin this service check:

•Check the entire paper path for obstructions.

•Be sure the correct type of paper is being used.

•Be sure the printer is installed on a flat surface.

	FRU	Action

1	Large and Small	Check for wear and binds.
	Feed Rollers

2	Small Feed Roller	Check for damage.
	Springs

3	Auto Sheet	Check the pick roller for wear.
	Feeder Assembly

4	Mid Frame Asm	Check the following for wear:
		•	Exit roller
		•	Star rollers

5	End-of-Forms	Check for binds or damage.
	Flag

Diagnostic Information 2-13

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Contents 4402-001 4402-001 Table of Contents Assembly 3 Electronics Index Consignes de Sécurité Safety InformationSicherheitshinweise Norme di sicurezzaInformaçõ es de Seguranç a Pautas de SeguridadInformació de Seguretat 4402-001 Preface General Information Power ConsumptionScanner Specifications Operator Panel Press this When you want to ButtonAbbreviations Maintenance ApproachDiagnostic Information Power-On Self Test Post SequenceStart Post Symptom Table Symptom Tables Go to the Scan/Copy Quality Go to the CCD Module AssemblyGo to the Gear Train Assembly System Board Removal onGo to the Print Quality Service Go to the Paper Feed ServiceGo to the Paper Path Service Go to the Power Service CheckService Checks Carrier Transport Service CheckEngine. Go to the Print Engine Removal on Cover Sensor Removal on page 4-6. If Assembly Print Engine Removal onTo the Maintenance Station Removal on Removal onCCD Module Assembly Service Check Gear Train Assembly ServiceRemoval on page 4-12 for more Print Engine Removal on Gear Train Assembly Service CheckAssembly Removal on Belt/Idler Pulley AssemblyStation Removal on Maintenance Station Service CheckRun the Power-On Self Test Post Sequence Paper Feed Service CheckEngine 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 Test Diagnostic Aids4402-001 Handling ESD-Sensitive Parts Repair InformationAdjustments Removal ProceduresReleasing Plastic Latches Rear Cover Removal Scanner Lid Assembly RemovalTop Housing Assembly Removal Operator Panel RemovalPaper Support Removal CCD Module Assembly Removal Access Cover Sensor Removal Gear Train Assembly RemovalRight Cover Removal Access Cover RemovalLeft Cover Removal Middle Frame Removal 4402-001 Print Engine Removal System Board Removal ASF Module RemovalEncoder Strip Removal Carrier RemovalBelt/Idler Pulley Assembly Print Engine Removal Maintenance Station RemovalUnits Description Connector Locations4402-001 Lubrication Specifications Preventive Maintenance4402-001 Parts Catalog How to Use This Parts CatalogAssembly 1 Covers Asm Part Units Description Index Number Assembly 1 CoversAssembly 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