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HP 6L, 5L manual Removal and Replacement

Models: 5L 6L

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6

Removal and Replacement

Contents

Removal and Replacement Strategy	6-3
Required Tools	6-4
Installing Memory Cards (DRAM)	6-5
Covers and Doors	6-6
Back Cover	6-6
EP Door Assembly	6-8
Memory Door	6-9
Main Cover and Paper Input Assembly	6-10
Internal Assemblies	6-11
Control Panel	6-11
Exit Roller Assembly	6-12
Delivery Assembly	6-13
Fuser Pressure Plate	6-15
Heating Element	6-17
Pressure Roller	6-20
Face-Up/Face-Down Lever	6-21
Fuser Exit Roller Assembly	6-22
Paper Exit Sensor Flag	6-23
Top Assemblies	6-24
Laser/Scanner Assembly	6-24
Solenoid	6-25
Pickup Roller Assembly	6-27
Paper Feed Frame	6-30
Transfer Roller Guide & Transfer Roller	6-34
Kick Plate	6-35
Separation Pad	6-37
Subpads	6-38
Feed Assembly	6-39
Bottom Assemblies	6-42
Memory Door Guide	6-42
Motor	6-43
DC Controller	6-44
Formatter Board	6-47

Removal and Replacement 6 - 1

Image 74

HP 6L, 5L manual Removal and Replacement

Contents

Page HP LaserJet 5L HP LaserJet 6L C3941A C3990A Warranty Conventions Here are required statements regarding RFI and laser safety Chapter DescriptionsList of Figures Figure B-1 Vcci Statement Japan List of Tables Viii Contents Product InformationProduct Information Features Descriptions Printer FeaturesPrinter Features Paper Capacities and SizesHP LaserJet 5L Model and Serial Numbers IdentificationModel and Serial HP LaserJet 6L Model and Serial Numbers Electrical Specifications SpecificationsPerformance Specifications Acoustic EmissionsProduct Overview Front/Side Views of the PrinterFront Door Assemblies Back View of the Printer Ordering Parts Service ApproachParts Exchange Program Ordering ConsumablesRelated Documentation DescriptionOnline Services for Technical AssistanceWorldwide Support North American Response CenterWarranty Warranty ExclusionsProducts sold within one country to another country Warranty LimitationsVoltage Conversions Regulatory requirementsProduct Information Site Requirements Site Requirements Operating Environment Consider the following points before installing the printerSite Requirements Environmental RequirementsPrinter Space Requirements Printer Space Requirements Printer DimensionsDescription Dimension Storing Opened Toner Cartridges HP C3906A/F Toner CartridgeStorage Conditions Toner Cartridge Handling Suggestions Toner Cartridge DistributionOperating Overview Operating Overview Using the Control Panel Control Panel LayoutLED Lights Indicator Lights 1When this Indicator It means this Do thisIndicator Lights 2 Hardware Error There is anFunction Lights Action Result Front Panel ButtonFront Panel Button Usage Printing a Self-Test Self-test Page for HP LaserJet 5LTo print a self-test Self-test Page for HP LaserJet 6LContinuous Self Test Printer’s rated speedPrinting an Engine Test Useful for checking and adjusting registrationRefer to Engine Test in for the engine test procedure Engine Test ButtonResetting the Printer To Reset the PrinterOperating Overview Printer Maintenance Printer Maintenance Life Expectancy of Consumables Life Expectancy of ConsumablesToner cartridge box Toner Cartridge LifeSaving Toner with EconoMode Five Percent Text CoverageRecycling Toner Cartridges Some software applications may refer to this as draft modeRefilled Toner Cartridges InformationCleaning the Printer Cleaning Printer Components Cleaning Printer ComponentsContaminants on the roller can cause print quality problems Cleaning Spilled Toner Stains into fabricFunctional Overview Functional Overview Printer Functional Block Diagram Basic Printer FunctionsDC Controller/Power System DC Controller LoadsPrint Engine Control System Laser and Scanner DrivePower System on DC Controller PCA T e Functional Overview Resolution Enhancement REt Control PanelMemory Enhancement technology MEt EconoMode vs Normal ModeEconoMode Functional Overview 5 Image Formation Block Diagram Image Formation SystemDrum Conditioning Drum CleaningToner Cartridge Image WritingImage Transferring Image FusingImage Developing Paper Feed System Simplified Paper Path Solenoid and Sensors Solenoid and Photosensors Name DescriptionPaper Jam Detection Printer Timing Refer to Timing Diagram on the nextBasic Sequence of Operation Period Timing PurposeGeneral 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 totalBack Cover Ease of replacementCovers and Doors Remove the 3 screws -2, calloutMake certain the Input Extender is up Back Cover Removal 2EP Door Assembly EP Door Assembly RemovalMemory Door Memory Door RemovalRemove the toner cartridge Remove memory door Main Cover and Paper Input AssemblyMain Cover and Paper Input Assembly Removal Without removing the memory doorInternal Assemblies Control Panel RemovalExit Roller Assembly Exit Roller RemovalDelivery Assembly Delivery Assembly Removal 1Delivery Assembly Removal 2 Fuser Pressure Plate Fuser Pressure Plate RemovalFuser Pressure Plate Replacement Heating Element Heating Element Removal 1Heating Element Removal 2 Heating Element Removal 3 Make sure the connectors are properly reattachedLift the Heating Element out Pressure Roller Guide Removal Pressure RollerOn the right side of the shaft. Refer to for a part number Unchanged. -17 shows the lever from an HP LaserJet 5L Face-Up/Face-Down Lever ReplacementFace-Up/Face-Down Lever Release mechanismFuser Exit Roller Removal Fuser Exit Roller AssemblyShows the white tab from an HP LaserJet 5L Paper Exit Sensor Flag Reinstalled to exactly this positionPaper Exit Sensor Flag Replacement Top Assemblies Laser/Scanner AssemblyLaser/Scanner Assembly Removal Solenoid Solenoid Removal 1Only one way Solenoid Removal 2Pickup Roller Assembly Pickup Roller Assembly Removal 1Pickup Roller Assembly Removal 2 Assembly Figure Paper Pickup Roller Assembly Replacement Inside/Front ViewPaper Feed Frame Paper Feed Frame Removal 1Paper Feed Frame Removal 2 Paper Feed Frame Removal 3 Release the sensor unit connector Figure Paper Feed Frame Removal 4Transfer Roller Guide & Transfer Roller Kick Plate Kick Plate RemovalKick Plate Spring Replacement Separation Pad Separation Pad RemovalPlace your index finger on the subpad SubpadsAt the same time Press toward the top of the printerFeed Assembly Feed Assembly Removal 1Remove the Feed Assembly Feed Assembly Removal 2Feed Assembly Removal 3 Memory Door Guide Removal Bottom AssembliesMemory Door Guide Motor Motor RemovalDC Controller DC Controller Removal 1ESD Sensitive DC Controller Removal 2DC Controller Removal 3 Formatter Board Removal Formatter PCACorrect pieces should you need to replace them Removal and Replacement Troubleshooting Troubleshooting General Troubleshooting Flowchart StartExit Paper Path and Components Paper Path and ComponentsDC Controller Diagram ∙ Status Messages ∙ Service and Error Messages Printer Error TroubleshootingPriority of Errors PersistsLEDs Description Recommended Action Printer Status MessagesPrinter Status Messages 1 Printer Status Messages 2 Happens, troubleshoot using -3 belowUnclearable Error Service and Error Messages Service and Error Messages 1Beam Error. There are a number of causes Service and Error Messages 3 Formatter ErrorOz grams Image Formation TroubleshootingCheck the Toner Cartridge Image Defect Examples ∙ Replace the DC ControllerVertical Lines Character Voids ∙ Your paper may not meet the requirements for the printerDropouts ∙ Replace the DC Controller Troubleshooting Is completely blank. If you get occasional blank pagesWhite Horizontal Line Distorted Image or BD Failure Engine Test Troubleshooting ChecksEngine Test Troubleshooting Drum Rotation Functional Check Toner Cartridge High Voltage Connection Points 1 High-Voltage Power Supply CheckHigh-Voltage Power Supply Check Checks ActionToner Cartridge High Voltage Connection Points 2 Possible Cause Recommended Action Paper Curl TroubleshootingPaper Curl Remove the Printer Covers Figures 6-2, 6-3, Troubleshooting ToolsPaper Path Check Overriding PS204 and SW101Repetitive Image Defect Ruler Repetitive Image Defect RulerMain Wiring Diagram TroubleshootingConnector Signal Name Remarks Cable PinoutsFrsth Troubleshooting Parts and Diagrams Parts and Diagrams How to Use the Part Lists and Diagrams Parts and cannot be ordered through SMO Product Number Description Accessories and SuppliesAccessories and Supplies Common Hardware Example DescriptionMajor 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-1Parts Index Alphabetical Parts ListParts Index Parts Index A-3 IndexParts Index Parts Index A-5 501/502 Parts Index A-7 Numerical Parts IndexNumerical Parts List Parts Index A-9 Parts Index Parts Index A-11 Parts Index Laser Safety U.S.A Regulatory InformationLaser Statement Finland Regulatory InformationRegulatory Information B-3 Toner SafetyOzone Emission FCC Statement Class B Figure B-1C3941A-01 Service Notes C-1Fuser Accordian Jams Service Notes SolutionC3941A-02A Service Notes C-3Fuser Jam Clearing Countermeasure Service Notes Index Index-1Index-2 Safety Index-3Index-4 C3990-90991