Troubleshooting | HP 6L, 5L specification

7

Troubleshooting

Contents

General Troubleshooting Flowchart	7-3
Paper Path and Components	7-5
DC Controller Diagram	7-6
Printer Error Troubleshooting	7-7
Priority of Errors	7-7
Printer Status Messages	7-8
Service and Error Messages	7-10
Image Formation Troubleshooting	7-13
Check the Toner Cartridge	7-13
Image Defect Examples	7-14
Troubleshooting Checks	7-21
Engine Test	7-21
Half-Self Test Functional Check	7-22
Drum Rotation Functional Check	7-23
High-Voltage Power Supply Check	7-24
Paper Curl	7-26
Troubleshooting Tools	7-27
Paper Path Check	7-27
Repetitive Image Defect Ruler	7-28
Main Wiring Diagram	7-29

Troubleshooting 7-1

Image 122

HP 6L, 5L manual Troubleshooting

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 Features Descriptions Printer FeaturesPrinter Features Paper Capacities and Sizes HP LaserJet 5L Model and Serial Numbers IdentificationModel and Serial HP LaserJet 6L Model and Serial Numbers Electrical Specifications SpecificationsPerformance Specifications Acoustic Emissions Product Overview Front/Side Views of the Printer Front Door Assemblies Back View of the Printer Ordering Parts Service ApproachParts Exchange Program Ordering Consumables Related Documentation Description Online Services for Technical Assistance Worldwide Support North American Response Center Warranty Warranty Exclusions Products sold within one country to another country Warranty LimitationsVoltage Conversions Regulatory requirements Product Information Site Requirements Site Requirements Operating Environment Consider the following points before installing the printerSite Requirements Environmental Requirements Printer Space Requirements Printer Space Requirements Printer DimensionsDescription Dimension Storing Opened Toner Cartridges HP C3906A/F Toner CartridgeStorage Conditions Toner Cartridge Handling Suggestions Toner Cartridge Distribution Operating Overview Operating Overview Using the Control Panel Control Panel Layout LED Lights Indicator Lights 1When this Indicator It means this Do this Indicator Lights 2 Hardware Error There is an Function Lights Action Result Front Panel ButtonFront Panel Button Usage 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 Printing an Engine Test Useful for checking and adjusting registrationRefer to Engine Test in for the engine test procedure 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 box Toner Cartridge LifeSaving Toner with EconoMode Five Percent Text Coverage Recycling Toner Cartridges Some software applications may refer to this as draft modeRefilled Toner Cartridges Information Cleaning the Printer Cleaning Printer Components Cleaning Printer ComponentsContaminants on the roller can cause print quality problems 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 Memory Enhancement technology MEt EconoMode vs Normal ModeEconoMode Functional Overview 5 Image Formation Block Diagram Image Formation System Drum Conditioning Drum CleaningToner Cartridge Image Writing Image Transferring Image FusingImage Developing Paper Feed System Simplified Paper Path Solenoid and Sensors Solenoid and Photosensors Name Description Paper Jam Detection Printer Timing Refer to Timing Diagram on the nextBasic Sequence of Operation 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 Back Cover Ease of replacementCovers and Doors 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 Remove the toner cartridge Remove memory door Main Cover and Paper Input AssemblyMain Cover and Paper Input Assembly Removal 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 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 mechanism Fuser 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 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 Place your index finger on the subpad SubpadsAt the same time 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 Removal Bottom AssembliesMemory Door Guide Motor Motor Removal DC Controller DC Controller Removal 1 ESD Sensitive DC Controller Removal 2 DC Controller Removal 3 Formatter Board Removal Formatter PCACorrect pieces should you need to replace them Removal and Replacement Troubleshooting Troubleshooting General Troubleshooting Flowchart Start Exit Paper Path and Components Paper Path and Components DC Controller Diagram ∙ Status Messages ∙ Service and Error Messages Printer Error TroubleshootingPriority of Errors Persists LEDs 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 1 Beam Error. There are a number of causes Service and Error Messages 3 Formatter Error Oz grams Image Formation TroubleshootingCheck the Toner Cartridge 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 Toner Cartridge High Voltage Connection Points 1 High-Voltage Power Supply CheckHigh-Voltage Power Supply Check Checks Action Toner 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 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 Product Number Description Accessories and SuppliesAccessories and Supplies 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 Regulatory Information B-3 Toner SafetyOzone Emission FCC Statement Class B Figure B-1 C3941A-01 Service Notes C-1Fuser Accordian Jams Service Notes Solution C3941A-02A Service Notes C-3Fuser Jam Clearing Countermeasure Service Notes Index Index-1 Index-2 Safety Index-3 Index-4 C3990-90991