Sensors and Signals, 88Troubleshooting | HP 5000n guide

Sensors and Signals

The drawing below shows key components, sensors, and switches that control the operation of the printer. The table on page 7-90 shows the name of each sensor, as well as the signal name and its destination or source.

Delivery rollers

Tray 1

		Registration roller	pickup
			pickup
Photosensitive drum			roller
Photosensitive drum
Feed belt
		Feed
Fuser	Transfer roller	roller
	Transfer roller
Tray 2 pickup roller
Optional 250-sheet tray

Optional 500-sheet tray

Figure 7-17Paper Path and Components

7-88Troubleshooting

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Image 309

HP 5000n manual Sensors and Signals, 88Troubleshooting

Contents

HP LaserJet 5000, 5000 N 5000 GN Printers HP LaserJet 5000, 5000 N, and 5000 GN Printers Copyright Hewlett-Packard Company Contents Printer Operation Functional Information Removing and Replacing Parts Index Contents Overview Printer Description Printer Features Printer Features2Printer Description Paper Path 4Printer Description Model and Serial Numbers Identification 6Printer Description Site Requirements Space Requirements 2Printer Dimensions, HP LaserJet 8Printer Description 3Printer Dimensions, HP LaserJet 5000 N/5000 GN 4Printer Dimensions, HP LaserJet 5000 with Accessories Printer Weight without toner cartridge Acoustic Emissions Per ISO Printer State Sound Power Environmental Requirements10Printer Description Paper Specifications 12Printer Description By 8.2 14Printer Description Supported Types of Paper Guidelines for Using Paper 16Printer Description 11. Paper Weight Equivalence Paper Weight Equivalence Table Transparencies LabelsVellum Label Construction Envelopes Envelope ConstructionEnvelopes with Double-Side-Seams Envelopes with Adhesive Strips or Flaps Card Stock and Heavy PaperEnvelope Margins Envelope Storage Card Stock Guidelines Card Stock Construction Laser Safety Statement Safety InformationCanadian DOC Regulations 22Printer Description FCC Regulations Klass 1 Laser Apparat Laser statement for Finland Luokan 1 laserlaiteVaroitus Varning Material Safety Data Sheet Protecting the Environment Environmental Product StewardshipThis HP LaserJet printer design reduces Printer design eliminates Service Approach 2Service Approach Service Approach Ordering Information Parts and Supplies 4Service Approach Helpful DocumentationHelpful Documentation Description or Use Part Number Exchange Program Phone Numbers for OrderingConsumables Technical Assistance 6Service Approach HP CompuServe ForumHP FIRST, Europe Other Areas North American Response Center Narc Toner Cartridge Information 8Service ApproachRefilled Toner Cartridges Recycling Toner Cartridges Warranty Statement 10Service Approach Printer Operation Control Panel Layout Using the Control PanelControl Panel Lights Control Panel Lights LightIndication Control Panel Keys Control Panel Keys FunctionPaper Size Setting the Display Language Settings and DefaultsSettings and Defaults Setting or Default Explanation To change a Control Panel setting Control Panel MenusTo print a Control Panel menu map Information Menu Print Menu MAP Print ConfigurationInformation Menu ItemExplanation 6Printer Operation Paper Handling Menu ValuesExplanation Paper Handling MenuTray 1 MODE= First Tray 1 SIZE= Letter Cassette Tray 1 TYPE= Plain Tray 2 TYPE= Tray 3 TYPE= 8Printer Operation Paper Handling Menu Values Explanation Paper Handling Menu ItemValues Configure Fuser Mode no MENU=NOYES Print Quality Menu RESOLUTION=Print Quality Menu Values Fastres RET=MEDIUM OFF Light DarkECONOMODE=OFF 12Printer Operation Toner DENSITY=3 Create Cleaning Printing Menu Values Explanation Printing MenuCOPIES=1 PAPER= Letter 14Printer Operation Printing Menu Values SOURCE=INTERNAL Soft PCL Font InternalPCL Font NUMBER=0 16Printer Operation Append CR to LF= Configuration Menu Configuration Menu Configuration Menu Values Explanation Resource SAVE= OFF Auto18Printer Operation Clearablejob MEMORY, Press GO to Continue PROTECT= Auto Auto CONTINUE= Configuration Menu ItemValuesTonercontinue LOW=CONTINUE Stop 20Printer Operation Mopier Standard MODE=STANDARD EnhancedRAM DISK=OFF JAM RECOVERY= Configuration Menu ValuesRAM Disk Auto OFF Paperoff REFORMING=OFF on MESSAGE=OFF Maintenance OFFSmall Paper SPEED=NORMAL Slow Menu TIMEOUT=15I/O Menu Values Explanation BUFFER=AUTO Auto Buffer SIZE= I/O Menu ItemValuesParallel High SPEED=YES Parallel ADV FUNCTIONS=ON 26Printer Operation 10. EIO Menu Values Explanation EIO Menu Networked Printers CFG TCP/IP=NO CFG ETALK=NO28Printer Operation Resets Menu 11. Resets Menu ExplanationReset Memory Service Mode To enter Service Mode30Printer Operation Service Menu Setting the Page Count, Maintenance CountSerial Number 32Printer Operation Count Service Menu Service Mode12. Changing the Page Count Key Press Display Description Diagnostics Cold Reset PaperMaintenance Page Count Clear Event Log Engine Test Testing the Printer Cold Reset Resetting the PrinterTo perform a cold reset Clearing Nvram System Configuration MS-DOS System ConfigurationParallel DOS Commands 38Printer Operation Serial MS-DOS Commands Printer I/O Configuration Serial ConfigurationParallel Menu 40Printer Operation Pacing Handshaking Printer Maintenance 2Printer Maintenance Cleaning the Printer and Accessories Inside General Cleaning the Printer Component Cleaning Method / Notes Cleaning Spilled Toner Using the Printer Cleaning4Printer Maintenance Reset Maintenance Count Preventative MaintenanceExpected Life of Components Life of Components Part name Quantity Expected Life 6Printer Maintenance Functional Information 2Functional Information Printer Subsystems AC/DC Power Distribution Power Supply System 4Functional Information Overcurrent Overvoltage Protection 6Functional Information High Voltage Power Distribution DC Controller System Toner Cartridge Detection 8Functional Information Laser and Scanner Drive Solenoids, Sensors, Clutches, and Switches Paper Motion Monitoring and ControlEngine Test Print 10Functional Information MotorsPage PowerSave Formatter System12Functional Information EconoMode Resolution Enhancement technology REt Input/Output Random Access Memory RAM Printer MemoryRead Only Memory ROM Dimm Slots Disk AccessoryMemory Enhancement technology MEt Protect Control Panel PJL Overview 18Functional Information Image Formation SystemPage 20Functional Information Toner Cartridge 8Photosensitive Drum Image Formation System Photosensitive Drum 22Functional Information Cleaning the Drum 10Primary Charging Roller Image Formation System Conditioning the Drum Writing the Image Bdic PCB24Functional Information Developing the Image 26Functional Information Transferring the Image Image Fusing/Variable Fusing Temperature 28Functional Information Variable Fusing Temperature Paper Path Paper Feed System 30Functional Information Clutches and Sensors Printing from Tray 32Functional Information 18Tray 2 Paper Path Paper Feed System 34Functional Information 19Paper Skew Loop-forming 20250-sheet Paper Feeder Paper Feed System Printing from the Optional 500-sheet and 250-sheet Trays 36Functional Information 21500-sheet Paper Feeder Paper Jam Duplexer Reversing/Refeed System38Functional Information 22Paper Feed for the Duplexer Paper Feed System 40Functional Information Reversing System Duplexing Unit Pause Mode Uncurling Function42Functional Information Dance Mode 25 Pause Mode 44Functional Information Paper Jam in the Duplexer Printer Timing Period Purpose Remark Basic Sequence of Operation 46Functional Information Timing Diagram 48Functional Information Removing and Replacing Parts User Installable Accessories Memory Upgrade2Removing and Replacing Parts Page 4Removing and Replacing Parts If an optional duplexer is installed Installing EIO Cards / Mass Storage Checking Memory Installation 6Removing and Replacing Parts 1Installing EIO Cards or Mass Storage Devices Required Tools Removal and Replacement Strategy Screws Used in the Printer Drawing and Description Purpose 8Removing and Replacing Parts Screws Used in the Printer Drawing and Description Purpose 10Removing and Replacing Parts Removing CoversRear Door / Rear Output Bin Support Strap Top Cover 12Removing and Replacing Parts Top screws Toner Cartridge Drive Arm Rear screws 14Removing and Replacing Parts Control Panel Overlay and Control Panel 16Removing and Replacing Parts 9Toner Cartridge Door Assembly Under Side of Top Cover Door Toner Cartridge Door Assembly Front Cover and Tray 18Removing and Replacing Parts Tray 20Removing and Replacing Parts Front Cover Pins 13Location of Face Down Assembly Base Face Down Assembly 22Removing and Replacing Parts 14Face Down Assembly Left and Right Side Covers Tray 1 Inner Cover 24Removing and Replacing Parts 17Tray 1 Inner Cover front of printer Right and Left Corner Covers 26Removing and Replacing Parts Removing Assemblies 28Removing and Replacing Parts Transfer Roller Assembly 21Right Side of Transfer Roller Fuser 30Removing and Replacing Parts Paper Handling PCA 32Removing and Replacing Parts Top Margin Adjustment 25Location of VR401 Removing Assemblies 34Removing and Replacing Parts Main Gear Assembly 27Removing the Main Gear Assembly 36Removing and Replacing Parts Pickup Gear Assembly Tray 2 Shaft Gear to the Paper Feed Roller Assembly Gear Tray 1 Pickup Solenoid 38Removing and Replacing Parts 30Fan right side view of printer Fan 40Removing and Replacing Parts Formatter Assembly Tray 1 Roller Tray 2 Roller 42Removing and Replacing Parts 34Paper Feed Roller Clutch left side view of printer Paper Feed Roller Assembly 35Location of two common screws inside printer 44Removing and Replacing Parts 36Paper Feed Roller Assembly bottom view of printer 46Removing and Replacing Parts DC Controller Board and Power Supply 37DC Controller Assembly rear view of printer 48Removing and Replacing Parts 38DC Controller Assembly long screws 39DC Controller Assembly 50Removing and Replacing Parts Paper Feed Belt Assembly 41Paper Feed Belt Assembly removed Tray 1 Shaft 52Removing and Replacing Parts Must be installed on top of it Tray 2 Shaft 54Removing and Replacing Parts 44Reassembly of Tray 2 Shaft Reassembly Steps Tray 1 Lift Plate 56Removing and Replacing Parts 46Tray 1 Separation Pad Removing Assemblies Tray 1 Separation Pad Paper Guide 58Removing and Replacing Parts 48Paper Path Detect Sensor Paper Path Detect Sensor Face Down Bin Full Sensor 60Removing and Replacing Parts 50Detail of Bin Full Sensor 62Removing and Replacing Parts Power Connection 52Registration Assembly Registration Assembly 64Removing and Replacing Parts 53Registration Assembly Clutch 54Upper Delivery Assembly rear left view of printer Upper Delivery Assembly 66Removing and Replacing Parts 56Delivery Roller Components Delivery Roller Removal 68Removing and Replacing Parts 58Laser Scanner Assembly top inside view of printer Laser Scanner Assembly Main Motor 70Removing and Replacing Parts Toner Cartridge Guides 72Removing and Replacing Parts Power Inlet Assembly 62Optional 500-sheet Tray top view Optional 500-sheet Tray Disassembly 63500-sheet Tray top view with covers removed 74Removing and Replacing Parts 64Removing the Tray Indicator Assembly Tray Indicator Assembly 76Removing and Replacing Parts Left Front Corner Cover Installation 66Removing the Paper Size Spring Assembly Paper Size Spring Assembly Roller and Feed Roller 78Removing and Replacing PartsFeed Roller Removal Roller Removal 68Removing the Gear Assembly and PCA Gear Assembly and PCA 80Removing and Replacing Parts Power Connector 70Removing the Separation Roller Separation Roller 82Removing and Replacing Parts Troubleshooting Troubleshooting Process Major Steps for Troubleshooting2Troubleshooting Image Quality 4Troubleshooting Troubleshooting Process Flow Troubleshooting Process Troubleshooting the Printing System 6TroubleshootingPreliminary Operating Checks Power on Defect or Blank Display ProblemAction Power On No AC Power Cause 8TroubleshootingAction No DC Power Cause Action 10Troubleshooting Engine Test Button LocationPrinting an Engine Test Display Event Log 12Troubleshooting Event Log Display the Event Log 14TroubleshootingPrint the Event Log Interpret the Event Log Left-most column Printer Messages 16TroubleshootingAlphabetical Printer Messages Control Panel Message Event Log Explanation Recommended Message Action Disk Device Failure Cannot Duplex Rear BIN Open Check Input Device Disk is Write Protected Flash Device Failure 18Troubleshooting Input Device Condition xx.yy Flash is Write Protected Initializing Do not Power OFF 20TroubleshootingLoading Offline Memory Full Stored Data Lost RAM Disk Device Failure 22TroubleshootingRAM Disk File System is Full Tray x Empty Unsupported Size in Tray YY 24Troubleshooting Wait for Printer to Reinitialize USE Type Size INSTEAD? Numerical Printer Messages Control Panel Message 26TroubleshootingEvent Explanation Recommended Log Action Message Paper JAM 13.10 or Paper delay jam at paper For 13.20 28Troubleshooting Press GO to Continue Parallel I/O Buffer Overflow Buffer OverflowPress GO to Continue Serial I/O Buffer Overflow Press GO to Continue 30Troubleshooting Recommended Action Printer Error 32Troubleshooting Fuser Error Printer Error 34Troubleshooting Cycle Power to Continue 36Troubleshooting 69.x 38Troubleshooting 8x.yyyy General Paper Path Troubleshooting General Paper Path Troubleshooting Questions ProblemAction40Troubleshooting General Paper Path Troubleshooting Questions Problem Action Paper Path Test 42Troubleshooting Menu Map Information Pages 44Troubleshooting Configuration 46Troubleshooting 5Configuration Verify installed options Image Quality 48TroubleshootingCheck the Toner Cartridge Image Quality Checks Image Quality Checks Action EconoMode Image Defects 50Troubleshooting 10. Black Possible Cause Action Black Lines perpendicular path Possible Cause Action 10. Black 52Troubleshooting 11. Blank Possible Cause Action 54Troubleshooting Empty weight = 1450 grams 51.5 oz 12. Blank Spots 11. Blank 56Troubleshooting 12. Blank Spots Possible Cause Action13. Character Voids Possible Cause Action 14. Creases Possible Cause Action 15. Curl Possible Cause Action 58Troubleshooting 17. Distorted Image 16. Dirt on Back Possible Cause Action 18. Dropouts 60Troubleshooting 19. Faded Print/Bubbles Possible Cause Action Family Paper Specifications Guide 19. Faded Print/Bubbles 62Troubleshooting 20. Gray Background Possible Cause Action 21. Horizontal Smudges Possible Cause Action 64Troubleshooting 23. Light Print, Dark Print, or Fade Possible Cause Action 22. Horizontal White Lines 66Troubleshooting 23. Light Print, Dark Print, or Fade24. Loose Toner Possible Cause Action 25. Repetitive Defects Possible Cause Action Examine and clean rollers in the paper path 68Troubleshooting 26. Skew Possible Cause Action27. Toner Smear Possible Cause Action Dirt in printer 28. Toner Specks Possible Cause Action 70Troubleshooting Paper SPEED=SLOW29. Vertical Black Lines 31. Vertical White Lines 30. Vertical Dots Repetitive Defect Ruler 72Troubleshooting 6Repetitive Defect Ruler Troubleshooting the Printing System 74Troubleshooting Image System Troubleshooting Half Self-Test Functional Check Drum Rotation Functional Check EIO Troubleshooting Interface Troubleshooting76Troubleshooting Communications Check 7JetDirect Configuration Troubleshooting the Printing System 78Troubleshooting JetDirect Configuration Locations of Components Reference Diagrams 9250-sheet Paper Feeder 80Troubleshooting 10250-sheet Paper Feeder Reference Diagrams 11Tray 2 Paper Path 82Troubleshooting 12500-sheet Paper Feeder Reference Diagrams 13500-sheet Paper Feeder 84Troubleshooting Duplexing Unit 86Troubleshooting Duplexing Unit 88Troubleshooting Sensors and SignalsPage 90Troubleshooting 32. Sensors and Signals Name TSW1 92Troubleshooting 19Location of Sensors and Switches 20Duplexer Sensors and Switches Reference Diagrams 94Troubleshooting 22Motors Duplexing unit Reference Diagrams 96Troubleshooting Page 98Troubleshooting 26PCA Duplexing Unit Reference Diagrams 27Clutches and Solenoids 100Troubleshooting 28Clutches and Solenoids Duplexing Unit Reference Diagrams 102Troubleshooting 30Switches 500-sheet Paper Feeder Reference Diagrams 104Troubleshooting 31DC Controller Board Test Points and Switches 32250-sheet Paper Feeder Sensors Reference Diagrams 106Troubleshooting DC Controller PCA Inputs and Outputs 33DC Controller PCA I/O 1 Reference Diagrams 34DC Controller PCA I/O 2 108Troubleshooting 35DC Controller PCA I/O 3 Reference Diagrams 36DC Controller PCA I/O 4 110Troubleshooting Parts and Diagrams 2Parts and Diagrams How To Use the Parts Lists and DiagramsOrdering Parts Ordering Consumables Numbers Accessories and Supplies Accessories and Supplies Description Exchange No Product No4Parts and Diagrams Accessories and Supplies Description Exchange No. Product No 6Parts and Diagrams Common Hardware and Replacement CablesScrews Used in the Printer Description Replaceable Cables Description Illustrations and Parts Lists 8Parts and Diagrams 1Assembly Location Diagram Illustrations and Parts Lists 2External Covers and Panels 10Parts and Diagrams Illustrations and Parts Lists 12Parts and Diagrams Top Cover Assembly Item No Quantity Description Top Cover Assembly Item No Quantity Description Internal Components 1 Item No. Part No Quantity Description 14Parts and Diagrams Internal Components 1 Item No. Part No Quantity Description 5Internal Components 2 16Parts and Diagrams Internal Components 2 Item No. Part No Quantity Description 6Internal Components 3 18Parts and Diagrams Internal Components 3 Item No. Part No Quantity Description 7Internal Components 4 20Parts and Diagrams Illustrations and Parts Lists 22Parts and Diagrams 8Upper Delivery Assembly 9Tray 2 Paper Pickup Roller Assembly 24Parts and Diagrams 10Paper Feed Belt Assembly Illustrations and Parts Lists 26Parts and Diagrams 11Paper Feed Assembly Illustrations and Parts Lists 28Parts and Diagrams 12Registration Roller Assembly RG5-3524-000CN Registration Roller Assembly Sheet Tray 30Parts and Diagrams 16 -sheet Tray Item No. Part No Quantity Description 32Parts and Diagrams 14Main Drive Assembly Illustrations and Parts Lists 34Parts and Diagrams 15Pickup Drive Assembly 16PCA Assembly Locations 36Parts and Diagrams 17Printer Controller Assembly 21. Fuser Item No. Part No Quantity Description Fuser 19500-sheet Feeder 38Parts and Diagrams 22 -sheet Feeder Item No. Part No Quantity Description 20500-sheet Feeder 40Parts and Diagrams 23 -sheet Feeder Item No. Part No Quantity Description Alphabetical Parts List 42Parts and DiagramsDescription Part Number Table Number Description Part Number Table Number 44Parts and Diagrams 70 on 46Parts and Diagrams Part Number Description Table Number Numerical Parts List 48Parts and Diagrams 110V RH2-5337-000CN 220V RG5-3517-000CN DC Controller 19 on 50Parts and Diagrams Part Number Description Table Number 52Parts and Diagrams Index Index Index Index