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HP 5L, 6L manual Covers and Doors, Back Cover, Ease of replacement, Remove the 3 screws -2, callout

Models: 5L 6L

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Covers and Doors

Back Cover

1Unplug the power cord and remove the parallel cable from the back of the printer.

2Remove the toner cartridge.

3Lift the Input Extender assembly.

C a u t i o n		You must lift the Input Extender when the covers are removed or it will break. After
		you have removed the covers, leave the Input Extender in this lifted position for
		ease of replacement.
	4 Remove the (3) screws (Figure 6-2, callout 1).
Figure 6-2
Figure 6-2

Back Cover Removal (1 of 2)

6 - 6 Removal and Replacement

Image 79

HP 5L, 6L manual Covers and Doors, Ease of replacement, Remove the 3 screws -2, callout, Back Cover Removal 1

Contents

Page HP LaserJet 5L HP LaserJet 6L C3941A C3990A Warranty Conventions Chapter Descriptions Here are required statements regarding RFI and laser safetyList of Figures Figure B-1 Vcci Statement Japan List of Tables Viii Product Information ContentsProduct Information Paper Capacities and Sizes Printer FeaturesPrinter Features Features DescriptionsModel and Serial IdentificationHP LaserJet 5L Model and Serial Numbers HP LaserJet 6L Model and Serial Numbers Acoustic Emissions SpecificationsPerformance Specifications Electrical SpecificationsFront/Side Views of the Printer Product OverviewFront Door Assemblies Back View of the Printer Ordering Consumables Service ApproachParts Exchange Program Ordering PartsDescription Related DocumentationTechnical Assistance Online Services forNorth American Response Center Worldwide SupportWarranty Exclusions WarrantyRegulatory requirements Warranty LimitationsVoltage Conversions Products sold within one country to another countryProduct Information Site Requirements Site Requirements Environmental Requirements Consider the following points before installing the printerSite Requirements Operating EnvironmentDescription Dimension Printer Space Requirements Printer DimensionsPrinter Space Requirements Storage Conditions HP C3906A/F Toner CartridgeStoring Opened Toner Cartridges Toner Cartridge Distribution Toner Cartridge Handling SuggestionsOperating Overview Operating Overview Control Panel Layout Using the Control PanelIt means this Do this Indicator Lights 1When this Indicator LED LightsHardware Error There is an Indicator Lights 2Front Panel Button Usage Front Panel ButtonFunction Lights Action Result Self-test Page for HP LaserJet 5L Printing a Self-TestSelf-test Page for HP LaserJet 6L To print a self-testPrinter’s rated speed Continuous Self TestEngine Test Button Useful for checking and adjusting registrationRefer to Engine Test in for the engine test procedure Printing an Engine TestTo Reset the Printer Resetting the PrinterOperating Overview Printer Maintenance Printer Maintenance Life Expectancy of Consumables Life Expectancy of ConsumablesFive Percent Text Coverage Toner Cartridge LifeSaving Toner with EconoMode Toner cartridge boxInformation Some software applications may refer to this as draft modeRefilled Toner Cartridges Recycling Toner CartridgesCleaning the Printer Contaminants on the roller can cause print quality problems Cleaning Printer ComponentsCleaning Printer Components Stains into fabric Cleaning Spilled TonerFunctional Overview Functional Overview Basic Printer Functions Printer Functional Block DiagramDC Controller Loads DC Controller/Power SystemLaser and Scanner Drive Print Engine Control SystemPower System on DC Controller PCA T e Functional Overview Control Panel Resolution Enhancement REtEconoMode EconoMode vs Normal ModeMemory Enhancement technology MEt Functional Overview 5 Image Formation System Image Formation Block DiagramImage Writing Drum CleaningToner Cartridge Drum ConditioningImage Developing Image FusingImage Transferring Paper Feed System Simplified Paper Path Name Description Solenoid and Sensors Solenoid and PhotosensorsPaper Jam Detection Period Timing Purpose Refer to Timing Diagram on the nextBasic Sequence of Operation Printer TimingGeneral 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 MByte card MByte total Installing Memory Cards DramRemove the 3 screws -2, callout Ease of replacementCovers and Doors Back CoverBack Cover Removal 2 Make certain the Input Extender is upEP Door Assembly Removal EP Door AssemblyMemory Door Removal Memory DoorWithout removing the memory door Main Cover and Paper Input AssemblyMain Cover and Paper Input Assembly Removal Remove the toner cartridge Remove memory doorControl Panel Removal Internal AssembliesExit Roller Removal Exit Roller AssemblyDelivery Assembly Removal 1 Delivery AssemblyDelivery Assembly Removal 2 Fuser Pressure Plate Removal Fuser Pressure PlateFuser Pressure Plate Replacement Heating Element Removal 1 Heating ElementHeating 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 Release mechanism Face-Up/Face-Down Lever ReplacementFace-Up/Face-Down Lever Unchanged. -17 shows the lever from an HP LaserJet 5LShows 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 Removal 1 SolenoidSolenoid Removal 2 Only one wayPickup Roller Assembly Removal 1 Pickup Roller AssemblyPickup Roller Assembly Removal 2 Paper Pickup Roller Assembly Replacement Inside/Front View Assembly FigurePaper Feed Frame Removal 1 Paper Feed FramePaper Feed Frame Removal 2 Paper Feed Frame Removal 3 Paper Feed Frame Removal 4 Release the sensor unit connector FigureTransfer Roller Guide & Transfer Roller Kick Plate Removal Kick PlateKick Plate Spring Replacement Separation Pad Removal Separation PadPress toward the top of the printer SubpadsAt the same time Place your index finger on the subpadFeed Assembly Removal 1 Feed AssemblyFeed Assembly Removal 2 Remove the Feed AssemblyFeed Assembly Removal 3 Memory Door Guide Bottom AssembliesMemory Door Guide Removal Motor Removal MotorDC Controller Removal 1 DC ControllerDC Controller Removal 2 ESD SensitiveDC Controller Removal 3 Correct pieces should you need to replace them Formatter PCAFormatter Board Removal Removal and Replacement Troubleshooting Troubleshooting Start General Troubleshooting FlowchartExit Paper Path and Components Paper Path and ComponentsDC Controller Diagram Persists Printer Error TroubleshootingPriority of Errors ∙ Status Messages ∙ Service and Error MessagesPrinter Status Messages 1 Printer Status MessagesLEDs Description Recommended Action Unclearable Error Happens, troubleshoot using -3 belowPrinter Status Messages 2 Service and Error Messages 1 Service and Error MessagesBeam Error. There are a number of causes Formatter Error Service and Error Messages 3Check the Toner Cartridge Image Formation TroubleshootingOz grams ∙ Replace the DC Controller Image Defect ExamplesVertical Lines ∙ Your paper may not meet the requirements for the printer Character VoidsDropouts Is completely blank. If you get occasional blank pages ∙ Replace the DC Controller TroubleshootingWhite Horizontal Line Distorted Image or BD Failure Engine Test Troubleshooting ChecksEngine Test Troubleshooting Drum Rotation Functional Check Checks Action High-Voltage Power Supply CheckHigh-Voltage Power Supply Check Toner Cartridge High Voltage Connection Points 1Toner Cartridge High Voltage Connection Points 2 Paper Curl Paper Curl TroubleshootingPossible Cause Recommended Action Overriding PS204 and SW101 Troubleshooting ToolsPaper Path Check Remove the Printer Covers Figures 6-2, 6-3,Repetitive Image Defect Ruler Repetitive Image Defect RulerTroubleshooting Main Wiring DiagramCable Pinouts Connector Signal Name RemarksFrsth 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 Example Description Common HardwareMajor 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 A-1 Parts IndexParts Index Alphabetical Parts ListParts Index Index Parts Index A-3Parts Index Parts Index A-5 501/502 Numerical Parts Index Parts Index A-7Numerical Parts List Parts Index A-9 Parts Index Parts Index A-11 Parts Index Regulatory Information Laser Safety U.S.ARegulatory Information Laser Statement FinlandOzone Emission Toner SafetyRegulatory Information B-3 Figure B-1 FCC Statement Class BFuser Accordian Jams Service Notes C-1C3941A-01 Solution Service NotesFuser Jam Clearing Countermeasure Service Notes C-3C3941A-02A Service Notes Index-1 IndexIndex-2 Index-3 SafetyIndex-4 C3990-90991