Fuser Accordian Jams, C3941A-01, Service Notes C-1 | HP 6L, 5L

C

Service Notes

Fuser Accordian Jams

C3941A-01

S E R V I C E N O T E

SUPERSEDES: NONE

HP C3941A LaserJet 5L

Serial Numbers: <JPBB022333 <JPTB000101 <JPBJ041310 <JPBK006151 <JPBL033831 <JPTJ000101 <JPTK000101 <JPTL000101 <USBB158323 <JPTM080500 <JPBM007279 <JPBT000101 <JPBV000101 <JPTT090666 <JPTV122612 <JPTX029034

LaserJet 5L Printer Fuser Accordion Jams

To Be Performed By: HP-Authorized personnel or Customer

Parts required: RB1-7332-000CN output tray fin

General Description:

Under some conditions the paper can be pushed back down into the fuser. This re- sults in a paper jam in the fuser area. The paper jam can be so severe that the cus- tomers cannot remove the paper and the printer requires servicing.

		DATE	20 February 1996
ADMINISTRATIVE INFORMATION

SERVICE NOTE CLASSIFICATION:
	MODIFICATION RECOMMENDED
ACTION	IMMEDIATELY	STANDARDS:
CATEGORY:	ON SPECIFIED FAILURE	LABOR: 0.5 Hours
	AGREEABLE TIME
LOCATION	CUSTOMER INSTALLABLE	SERVICE	RETURN	USED	RETURN
CATEGORY:	ON-SITE	INVENTORY:	SCRAP	PARTS:	SCRAP
	HP LOCATION		SEE TEXT		SEE TEXT

AVAILABILITY:	PRODUCT’S SUPPORT LIFE	RESPONSIBLE UNTIL: February		1998

AUTHOR: SKL

ENTITY: 4600

ADDITIONAL INFORMATION:

Service Notes C-1

Image 196

HP 6L, 5L manual Fuser Accordian Jams, C3941A-01, Service Notes C-1

Contents

Page HP LaserJet 5L HP LaserJet 6L C3941A C3990A Warranty Conventions Here are required statements regarding RFI and laser safety Chapter Descriptions List of Figures Figure B-1 Vcci Statement Japan List of Tables Viii Contents Product Information Product Information Printer Features Printer FeaturesFeatures Descriptions Paper Capacities and Sizes Model and Serial IdentificationHP LaserJet 5L Model and Serial Numbers HP LaserJet 6L Model and Serial Numbers Specifications Performance SpecificationsElectrical Specifications Acoustic Emissions Product Overview Front/Side Views of the Printer Front Door Assemblies Back View of the Printer Service Approach Parts Exchange ProgramOrdering Parts Ordering Consumables Related Documentation Description Online Services for Technical Assistance Worldwide Support North American Response Center Warranty Warranty Exclusions Warranty Limitations Voltage ConversionsProducts sold within one country to another country Regulatory requirements Product Information Site Requirements Site Requirements Consider the following points before installing the printer Site RequirementsOperating Environment Environmental Requirements Description Dimension Printer Space Requirements Printer DimensionsPrinter Space Requirements Storage Conditions HP C3906A/F Toner CartridgeStoring Opened Toner Cartridges Toner Cartridge Handling Suggestions Toner Cartridge Distribution Operating Overview Operating Overview Using the Control Panel Control Panel Layout Indicator Lights 1 When this IndicatorLED Lights It means this Do this Indicator Lights 2 Hardware Error There is an Front Panel Button Usage Front Panel ButtonFunction Lights Action Result Printing a Self-Test Self-test Page for HP LaserJet 5L To print a self-test Self-test Page for HP LaserJet 6L Continuous Self Test Printer’s rated speed Useful for checking and adjusting registration Refer to Engine Test in for the engine test procedurePrinting an Engine Test Engine Test Button Resetting the Printer To Reset the Printer Operating Overview Printer Maintenance Printer Maintenance Life Expectancy of Consumables Life Expectancy of Consumables Toner Cartridge Life Saving Toner with EconoModeToner cartridge box Five Percent Text Coverage Some software applications may refer to this as draft mode Refilled Toner CartridgesRecycling Toner Cartridges Information Cleaning the Printer Contaminants on the roller can cause print quality problems Cleaning Printer ComponentsCleaning Printer Components Cleaning Spilled Toner Stains into fabric Functional Overview Functional Overview Printer Functional Block Diagram Basic Printer Functions DC Controller/Power System DC Controller Loads Print Engine Control System Laser and Scanner Drive Power System on DC Controller PCA T e Functional Overview Resolution Enhancement REt Control Panel EconoMode EconoMode vs Normal ModeMemory Enhancement technology MEt Functional Overview 5 Image Formation Block Diagram Image Formation System Drum Cleaning Toner CartridgeDrum Conditioning Image Writing Image Developing Image FusingImage Transferring Paper Feed System Simplified Paper Path Solenoid and Sensors Solenoid and Photosensors Name Description Paper Jam Detection Refer to Timing Diagram on the next Basic Sequence of OperationPrinter Timing Period Timing Purpose General Timing Diagram HP LaserJet 5L General Timing Diagram HP LaserJet 6L Functional Overview Removal and Replacement Removal and Replacement Removal and Replacement Strategy Removal and Replacement Installing Memory Cards Dram MByte card MByte total Ease of replacement Covers and DoorsBack Cover Remove the 3 screws -2, callout Make certain the Input Extender is up Back Cover Removal 2 EP Door Assembly EP Door Assembly Removal Memory Door Memory Door Removal Main Cover and Paper Input Assembly Main Cover and Paper Input Assembly RemovalRemove the toner cartridge Remove memory door Without removing the memory door Internal Assemblies Control Panel Removal Exit Roller Assembly Exit Roller Removal Delivery Assembly Delivery Assembly Removal 1 Delivery Assembly Removal 2 Fuser Pressure Plate Fuser Pressure Plate Removal Fuser Pressure Plate Replacement Heating Element Heating Element Removal 1 Heating Element Removal 2 Lift the Heating Element out Make sure the connectors are properly reattachedHeating Element Removal 3 On the right side of the shaft. Refer to for a part number Pressure RollerPressure Roller Guide Removal Face-Up/Face-Down Lever Replacement Face-Up/Face-Down LeverUnchanged. -17 shows the lever from an HP LaserJet 5L Release mechanism Shows the white tab from an HP LaserJet 5L Fuser Exit Roller AssemblyFuser Exit Roller Removal Paper Exit Sensor Flag Replacement Reinstalled to exactly this positionPaper Exit Sensor Flag Laser/Scanner Assembly Removal Laser/Scanner AssemblyTop Assemblies Solenoid Solenoid Removal 1 Only one way Solenoid Removal 2 Pickup Roller Assembly Pickup Roller Assembly Removal 1 Pickup Roller Assembly Removal 2 Assembly Figure Paper Pickup Roller Assembly Replacement Inside/Front View Paper Feed Frame Paper Feed Frame Removal 1 Paper Feed Frame Removal 2 Paper Feed Frame Removal 3 Release the sensor unit connector Figure Paper Feed Frame Removal 4 Transfer Roller Guide & Transfer Roller Kick Plate Kick Plate Removal Kick Plate Spring Replacement Separation Pad Separation Pad Removal Subpads At the same timePlace your index finger on the subpad Press toward the top of the printer Feed Assembly Feed Assembly Removal 1 Remove the Feed Assembly Feed Assembly Removal 2 Feed Assembly Removal 3 Memory Door Guide Bottom AssembliesMemory Door Guide Removal Motor Motor Removal DC Controller DC Controller Removal 1 ESD Sensitive DC Controller Removal 2 DC Controller Removal 3 Correct pieces should you need to replace them Formatter PCAFormatter Board Removal Removal and Replacement Troubleshooting Troubleshooting General Troubleshooting Flowchart Start Exit Paper Path and Components Paper Path and Components DC Controller Diagram Printer Error Troubleshooting Priority of Errors∙ Status Messages ∙ Service and Error Messages Persists Printer Status Messages 1 Printer Status MessagesLEDs Description Recommended Action Unclearable Error Happens, troubleshoot using -3 belowPrinter Status Messages 2 Service and Error Messages Service and Error Messages 1 Beam Error. There are a number of causes Service and Error Messages 3 Formatter Error Check the Toner Cartridge Image Formation TroubleshootingOz grams Image Defect Examples ∙ Replace the DC Controller Vertical Lines Character Voids ∙ Your paper may not meet the requirements for the printer Dropouts ∙ Replace the DC Controller Troubleshooting Is completely blank. If you get occasional blank pages White Horizontal Line Distorted Image or BD Failure Engine Test Troubleshooting ChecksEngine Test Troubleshooting Drum Rotation Functional Check High-Voltage Power Supply Check High-Voltage Power Supply CheckToner Cartridge High Voltage Connection Points 1 Checks Action Toner Cartridge High Voltage Connection Points 2 Paper Curl Paper Curl TroubleshootingPossible Cause Recommended Action Troubleshooting Tools Paper Path CheckRemove the Printer Covers Figures 6-2, 6-3, Overriding PS204 and SW101 Repetitive Image Defect Ruler Repetitive Image Defect Ruler Main Wiring Diagram Troubleshooting Connector Signal Name Remarks Cable Pinouts Frsth Troubleshooting Parts and Diagrams Parts and Diagrams How to Use the Part Lists and Diagrams Parts and cannot be ordered through SMO Accessories and Supplies Accessories and SuppliesProduct Number Description Common Hardware Example Description Major Assembly Locations Covers and Doors Qty Description Internal Components 1 LaserJet 5L Part No Internal Components 2 LaserJet 5LPart No Internal Components 3 Parts and Diagrams DC Controller/Formatter and Cables DC Controller Case Pickup Roller Assembly Parts and Diagrams Feed Assembly Parts and Diagrams Separation Guide Assembly Parts and Diagrams Delivery Assembly Parts and Diagrams Parts and Diagrams Parts Index Parts Index A-1 Parts Index Alphabetical Parts ListParts Index Parts Index A-3 Index Parts Index Parts Index A-5 501/502 Parts Index A-7 Numerical Parts Index Numerical Parts List Parts Index A-9 Parts Index Parts Index A-11 Parts Index Laser Safety U.S.A Regulatory Information Laser Statement Finland Regulatory Information Ozone Emission Toner SafetyRegulatory Information B-3 FCC Statement Class B Figure B-1 Fuser Accordian Jams Service Notes C-1C3941A-01 Service Notes Solution Fuser Jam Clearing Countermeasure Service Notes C-3C3941A-02A Service Notes Index Index-1 Index-2 Safety Index-3 Index-4 C3990-90991