DC Controller Diagram | HP 5L (C3941A) instruction

DC Controller Diagram

Figure 7-2

	DC Controller PCA Components
J3	Control Panel Connector (Formatter	J202	Paper Registration and Paper-Out
	PCA)		Photosensors (PS203 and PS202)
J102	Fusing Assembly	J206	Fusing Assembly (thermistor feedback)
J201	Formatter PCA Connection	J207	Scanner Motor
J204	Paper Pickup Solenoid (SL1)	J208	Laser Driver/Beam Detect Circuitry
J301	Developer Bias Contact	J209	Door Open/No Toner Cartridge Photosensor
			(PS204)
J302	Transfer Roller Contact	J401	Motor
J304	Primary Roller Contact	FU101
SW101	+12A Vdc Shutoff Switch	FU102	110 volt only
SW201	Engine Test Print Switch	INL101	Input Power Receptacle
PS201	Fusing Assembly Exit Photosensor

7-6 Troubleshooting

Image 126

HP 5L (C3941A) manual DC Controller Diagram, DC Controller PCA Components

Contents

HP LaserJet 5L C3941A Warranty Conventions Chapter Descriptions Product Information List of Figures Figure B-1 Vcci Statement Japan List of Tables Viii Contents Product Information Product Information Paper Capacities and Sizes Printer FeaturesPrinter Features Paper Capacities and Sizes Identification Model and SerialHP LaserJet 5L Model and Serial Numbers Electrical Specifications SpecificationsPerformance Specifications Category Specification 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 Technical Assistance HP CompuServe Forum Customer Information Centers North America Only Customer Support Center Assist LineNorth American Response Center Warranty Warranty Exclusions Warranty Limitations Voltage Conversions Site Requirements Site Requirements Environmental Requirements Site RequirementsOperating Environment Operating Storage Printer Space Requirements Printer Dimensions Description DimensionPrinter Space Requirements HP C3906A Toner Cartridge Storage ConditionsStoring Opened Toner Cartridges Toner Cartridge Handling Suggestions Toner Cartridge Distribution Installation and Configuration Installation and Configuration Choose the best location Unpacking and InstallationCheck package contents Unpack the printer Install printing software Install the toner cartridgeAttach the power cord Load paper Host-Based Printer Driver Minimum System Requirements Host-Based Printer Settings Host-Based Printer Settings Options PCL Printer Driver Host-Based Printing Status PCL Printer Settings PCL Printer Settings Options Using Host-Based and PCL Drivers Together PCL Printing Status 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 Front Panel Button Front Panel Button UsageFunction Action Lights Result Printing a Self-Test Self-test Continuous Self Test Printing an Engine Test Engine Test Button Resetting the Printer To Reset the Printer Installation and Configuration Printer Maintenance Printer Maintenance Life Expectancy of Consumables Life Expectancy of ConsumablesDescription Est Life Remarks Pgs Toner Cartridge Life Saving Toner with EconoModeFive Percent Text Coverage Refilled Toner Cartridges Recycling Toner Cartridges Cleaning the Printer Cleaning Printer Components Cleaning Printer Components Cleaning Spilled Toner 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 AC Power Distribution High Voltage Power Distribution Read Only Memory ROM Random Access Memory RAMFormatter System Parallel Interface Resolution Enhancement REt Control Panel EconoMode vs Normal Mode EconoModeMemory Enhancement technology MEt Enhanced I/O ProtectPJL Overview Image Formation Block Diagram Image Formation System Drum Conditioning Drum CleaningToner Cartridge Image Writing Image Fusing Image DevelopingImage Transferring 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 Removal and Replacement Removal and Replacement Removal and Replacement Strategy Required Tools Phillips and Posidriv screwdrivers Installing Memory Cards Dram Covers and Doors Back CoverBack Cover Removal 1 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 Removal 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 Pressure Roller Pressure Roller Removal Face-Up/Face-Down Lever Replacement Face-Up/Face-Down Lever Fuser Exit Roller Assembly Fuser Exit Roller Removal Paper Exit Sensor Flag Replacement Paper Exit Sensor Flag Laser/Scanner Assembly Laser/Scanner Assembly RemovalTop Assemblies Solenoid Solenoid Removal 1 Solenoid Removal 2 Pickup Roller Assembly Pickup Roller Assembly Removal 1 Pickup Roller Assembly Removal 2 To reinstall Paper Pickup Roller Assembly Replacement Inside/Front View Paper Feed Frame Paper Feed Frame Removal Paper Feed Frame Removal 1 Paper Feed Frame Removal 2 Transfer Roller Guide & Transfer Roller Kick Plate Kick Plate Removal Kick Plate Spring Replacement Separation Pad Separation Pad Removal Subpads Subpad Removal Feed Assembly Feed Assembly Removal 1 Feed Assembly Removal 2 Feed Assembly Removal 3 Bottom Assemblies Memory Door GuideMemory Door Guide Removal Motor Motor Removal DC Controller DC Controller Removal 1 DC Controller Removal 2 DC Controller Removal 3 Formatter PCA Formatter Board Removal Troubleshooting Troubleshooting General Troubleshooting Flowchart Start Exit Paper Path and Components Paper Path and Components DC Controller Diagram DC Controller PCA Components Printer Error Troubleshooting Priority of Errors Printer Status Messages Printer Status Messages 1LEDs Description Recommended Action Unclearable Error Printer 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 Image Formation Troubleshooting Check the Toner Cartridge Image Defect Examples Faded Print Vertical Lines Character Voids Dropouts Blank Page Occasional White Horizontal Line Distorted Image or BD Failure Troubleshooting Checks Engine TestEngine Test Half-Self Test Functional Check 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 Paper Curl Troubleshooting Paper CurlPossible Cause Recommended Action Troubleshooting Tools Paper Path CheckOverriding PS204 Repetitive Image Defect Ruler Repetitive Image Defect Ruler Main Wiring Diagram Troubleshooting Connector Signal Name Remarks Cable Pinouts 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 Common Hardware Example Description 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 Connector Cable Length ECU CaseInches 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 Alphabetical Parts List Parts Index Parts Index A-3 Parts Index Parts Index A-5 Table A-2 Numerical Parts Index Numerical Parts List Table A-2 Parts Index Parts Index A-9 Parts Index Laser Safety U.S.A Regulatory Information Laser Statement Finland Toner Safety Ozone Emission FCC Statement Class B Vcci Statement JapanVcci Statement Japan Index HP AUDIO-TIPS Index-2 Index-3 Index-4