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HP 5L (C3941A) manual Troubleshooting

Models: 5L (C3941A)

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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

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HP 5L (C3941A) manual Troubleshooting

Contents

HP LaserJet 5L C3941A Warranty Conventions Product Information Chapter Descriptions List of Figures Figure B-1 Vcci Statement Japan List of Tables Viii Product Information Contents Product Information Printer Features Printer FeaturesPaper Capacities and Sizes Paper Capacities and Sizes Model and Serial IdentificationHP LaserJet 5L Model and Serial Numbers Performance Specifications SpecificationsElectrical Specifications Category Specification Front/Side Views of the Printer Product Overview Front Door Assemblies Back View of the Printer Parts Exchange Program Service ApproachOrdering Parts Ordering Consumables Description Related Documentation HP CompuServe Forum Technical Assistance Customer Support Center Assist Line Customer Information Centers North America OnlyNorth American Response Center Warranty Exclusions Warranty Voltage Conversions Warranty Limitations Site Requirements Site Requirements Operating Environment Site RequirementsEnvironmental Requirements Operating Storage Description Dimension Printer Space Requirements Printer DimensionsPrinter Space Requirements Storage Conditions HP C3906A Toner CartridgeStoring Opened Toner Cartridges Toner Cartridge Distribution Toner Cartridge Handling Suggestions Installation and Configuration Installation and Configuration Check package contents Unpacking and InstallationChoose the best location Unpack the printer Attach the power cord Install the toner cartridgeInstall printing software Load paper Minimum System Requirements Host-Based Printer Driver Host-Based Printer Settings Options Host-Based Printer Settings Host-Based Printing Status PCL Printer Driver PCL Printer Settings Options PCL Printer Settings PCL Printing Status Using Host-Based and PCL Drivers Together Control Panel Layout Using the Control Panel When this Indicator Indicator Lights 1LED Lights It means this Do this Hardware Error There is an Indicator Lights 2 Front Panel Button Usage Front Panel ButtonFunction Action Lights Result Self-test Printing a Self-Test Continuous Self Test Engine Test Button Printing an Engine Test To Reset the Printer Resetting the Printer Installation and Configuration Printer Maintenance Printer Maintenance Life Expectancy of Consumables Life Expectancy of ConsumablesDescription Est Life Remarks Pgs Saving Toner with EconoMode Toner Cartridge LifeFive Percent Text Coverage Recycling Toner Cartridges Refilled Toner Cartridges Cleaning the Printer Cleaning Printer Components Cleaning Printer Components Cleaning Spilled Toner Functional Overview Functional Overview Basic Printer Functions Printer Functional Block Diagram DC Controller Loads DC Controller/Power System Laser and Scanner Drive Print Engine Control System AC Power Distribution Power System on DC Controller PCA High Voltage Power Distribution Formatter System Random Access Memory RAMRead Only Memory ROM Parallel Interface Control Panel Resolution Enhancement REt EconoMode EconoMode vs Normal ModeMemory Enhancement technology MEt Protect Enhanced I/OPJL Overview Image Formation System Image Formation Block Diagram Toner Cartridge Drum CleaningDrum Conditioning Image Writing Image Developing Image FusingImage Transferring Paper Feed System Simplified Paper Path Name Description Solenoid and Sensors Solenoid and Photosensors Paper Jam Detection Basic Sequence of Operation Refer to Timing Diagram on the nextPrinter Timing Period Timing Purpose General Timing Diagram Removal and Replacement Removal and Replacement Removal and Replacement Strategy Phillips and Posidriv screwdrivers Required Tools Installing Memory Cards Dram Back Cover Covers and DoorsBack Cover Removal 1 Back Cover Removal 2 EP Door Assembly Removal EP Door Assembly Memory Door Removal Memory Door Main Cover and Paper Input Assembly Removal Main Cover and Paper Input Assembly Control Panel Removal Internal Assemblies Exit Roller Removal Exit Roller Assembly Delivery Assembly Removal 1 Delivery Assembly Delivery Assembly Removal 2 Fuser Pressure Plate Removal Fuser Pressure Plate Fuser Pressure Plate Replacement Heating Element Removal 1 Heating Element Heating Element Removal 2 Heating Element Removal 3 Pressure Roller Removal Pressure Roller Face-Up/Face-Down Lever Face-Up/Face-Down Lever Replacement Fuser Exit Roller Removal Fuser Exit Roller Assembly Paper Exit Sensor Flag Paper Exit Sensor Flag Replacement Laser/Scanner Assembly Removal Laser/Scanner AssemblyTop Assemblies Solenoid Removal 1 Solenoid Solenoid Removal 2 Pickup Roller Assembly Removal 1 Pickup Roller Assembly Pickup Roller Assembly Removal 2 Paper Pickup Roller Assembly Replacement Inside/Front View To reinstall Paper Feed Frame Removal Paper Feed Frame Paper Feed Frame Removal 1 Paper Feed Frame Removal 2 Transfer Roller Guide & Transfer Roller Kick Plate Removal Kick Plate Kick Plate Spring Replacement Separation Pad Removal Separation Pad Subpad Removal Subpads Feed Assembly Removal 1 Feed Assembly Feed Assembly Removal 2 Feed Assembly Removal 3 Memory Door Guide Bottom AssembliesMemory Door Guide Removal Motor Removal Motor DC Controller Removal 1 DC Controller DC Controller Removal 2 DC Controller Removal 3 Formatter Board Removal Formatter PCA Troubleshooting Troubleshooting Start General Troubleshooting Flowchart Exit Paper Path and Components Paper Path and Components DC Controller PCA Components DC Controller Diagram Priority of Errors Printer Error Troubleshooting Printer Status Messages 1 Printer Status MessagesLEDs Description Recommended Action Printer Status Messages 2 Unclearable Error Service and Error Messages 1 Service and Error Messages Beam Error. There are a number of causes Formatter Error Service and Error Messages 3 Check the Toner Cartridge Image Formation Troubleshooting Faded Print Image Defect Examples Vertical Lines Character Voids Dropouts Blank Page Occasional White Horizontal Line Distorted Image or BD Failure Engine Test Troubleshooting ChecksEngine Test Half-Self Test Functional Check 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 Paper Path Check Troubleshooting ToolsOverriding PS204 Repetitive Image Defect Ruler Repetitive Image Defect Ruler Troubleshooting Main Wiring Diagram Cable Pinouts Connector Signal Name Remarks Dosns 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 Hardware Major Assembly Locations Covers and Doors Description Internal Components 1 Qty Description Internal Components 2 Parts and Diagrams Internal Components 3 Parts and Diagrams DC Controller/Formatter and Cables ECU Case Connector Cable LengthInches Pickup Roller Assembly Parts and Diagrams Feed Assembly RG5-1942-000CN Feed Assembly RB1-7226-000CN Idler Roller Separation Guide Assembly Parts and Diagrams Delivery Assembly Parts and Diagrams Parts and Diagrams Parts Index Parts Index Alphabetical Parts List Parts Index A-3 Parts Index Parts Index A-5 Table A-2 Numerical Parts Index Table A-2 Numerical Parts List Parts Index Parts Index A-9 Parts Index Regulatory Information Laser Safety U.S.A Laser Statement Finland Ozone Emission Toner Safety Vcci Statement Japan FCC Statement Class BVcci Statement Japan HP AUDIO-TIPS Index Index-2 Index-3 Index-4