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HP Pro 4300 C9H70UT C9H70UT#ABA manual Location of main printer parts 3

Models: Pro 4300 C9H70UT C9H70UT#ABA

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Figure 211. Location of main printer parts (3 of 4)

1.Transfer roller

2.Tray 1 pickup roller

3.Separation pad

334 Troubleshooting

Q2431-90912

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HP Pro 4300 C9H70UT C9H70UT#ABA manual Location of main printer parts 3

Contents

Hp LaserJet Page Service Q2431-90912 Copyright InformationTable of contents Printer operation Removing and replacing parts Troubleshooting Index Viii Table of contents Q2431-90912 List of figures List of figures Q2431-90912 Q2431-90912 List of figures Xii List of figures Q2431-90912 Q2431-90912 List of figures Xiv List of figures Q2431-90912 List of tables Xvi List of tables Q2431-90912 Q2431-90912 List of tables Xviii List of tables Q2431-90912 Contents Printer descriptionPrinter description Q2431-90912 Printer configurations Product configurationsModel and serial numbers Sample model and serial number labelPrinter specifications Site requirementsPhysical dimensions Printer physical dimensionsPrinter weights without print cartridge Printer weightsOff HP LaserJet 4300 series General specifications Description HP LaserJetCircuit requirements HP LaserJet 4200 series Acoustic ratingsPaper specifications Purchasing a large quantitySupported sizes and weights of media B5 ISOTray 1 Media specifications Duplex accessory media specifications Size Dimensions Weight Envelope feeder accessory Size DimensionsStacker and stapler/stacker do not support card stock Supported types of media Guidelines for using paperSymptom Problem with paper Solution Submenu onPaper weight equivalence table Paper weight equivalentsLabels Overhead transparenciesEnvelopes with double-side-seams EnvelopesEnvelope construction Envelopes with adhesive strips or flapsEnvelope storage Card stock and heavy paperEnvelope margins Card stock constructionTypes of print media to avoid Laser safety Safety informationPrint cartridge and toner safety Laser safety statement U.SEMI statement Korea Vcci statement Japan Varoitus Laser statement FinlandLuokan 1 laserlaite Klass 1 Laser Apparat VarningRegulatory information FCC regulationsEnvironmental product stewardship program Material Safety Data Sheet For more information Material restrictionsReturns Non-U.S. returns Declarations of Conformity Declaration of ConformityCanadian DOC regulations Service approach Ordering information Related documentation and software Service approachParts and supplies SupportHP service agreements HP-authorized resellers and supportHP PartnerCare Worldwide service and support offices Africa and Middle EastRecycling print cartridges Print-cartridge informationRefilled print cartridges ReturnsHewlett-Packard limited warranty statement HP Product Duration of WarrantyLimited warranty for toner cartridge life Service approach Q2431-90912 Printer operation Control-panel lights Using the control panelControl-panel layout Control-panel lights Light IndicationUsing the printer Help system Control-panel buttonsControl-panel buttons Button Function Settings and defaults Settings and defaultsSetting the control-panel display language Setting or default ExplanationPrinting and changing control-panel menus Control-panel menusOverview To print a control-panel menu mapTo change a control-panel setting Retrieve job menu Values Explanation Retrieve Job menuInformation menu Information menu ExplanationPaper Handling menu Paper-handling menu Values ExplanationTray N Type ANY Configure Device menu Printing submenuPrinting submenu Values Explanation PCL sub-submenu a submenu in the printing submenu PCL submenu Values ExplanationPrint Quality submenu Print quality submenu Values Explanation321 and Blurred print on page 321 . HP Lines on page 321 and Blurred print onUse the Resolution Enhancement technology REt System Setup submenu System setup submenu Values ExplanationAuto Continue to on Stapler/stacker submenu Stapler stacker submenu Values ExplanationSubmenu O submenu Values ExplanationPrinter maintenance Cleaning the printer and accessories Location of the transfer roller do not touchCleaning the fuser Cleaning the printer Component Cleaning method/notesRunning the cleaning page manually To run the cleaning page manuallyRunning the cleaning page automatically Cleaning spilled tonerTo run the cleaning page automatically Performing preventative maintenance Resetting the maintenance-kit counterMaintenance kit part numbers Part name Part number Expected life of components Maintaining the stapler unit Removing and replacing the stapler unitTo remove and replace the stapler unit Replacing the stapler unit 2 Loading staples To load staplesDownloading a remote firmware update Printer maintenance Q2431-90912 Theory of operation Theory of operation Q2431-90912 Introduction Basic operation of the printerPrinter operating sequence Laser/scanner system overview Control system overviewPickup and feed system overview Image formation system overviewGeneral descriptions DC controller PCAMotor and fan control MotorFan Power supply Fuser-control circuitFuser over-temperature protection Fuser over-temperature protection circuit block diagramHigh-voltage circuit block diagram High-voltage circuitLow-voltage circuit block diagram Low-voltage circuitCartridge detection Overcurrent/overvoltage protectionToner detection Cartridge memoryLaser/scanner assembly Laser/scanner assemblyLaser control circuit block diagram Laser/scanner controlPrinter paper pickup and feed block diagram Paper pickup systemPaper pickup/feed and fuser/delivery block diagram Paper pickup and feed blockTray 1 timing diagrams Printing from trayTray 1 pickup Q2431-90912 Theory of operationTray 2 timing diagrams No cassette installed Tray 2, 500-, 1,500-sheet feeder media size detectionLifter-driver operation Multiple feed preventionMedia skew prevention Correcting skewed media pagesFixing/delivery block Printer pickup delay jam from tray Printer jam detectionPrinter pickup stationary jam Printer delivery wrap jam when feeding regular media Printer delivery wrap jam when feeding non-regular mediaPrinter delivery delay jam Printer door open jam Printer residual media jamPrinting from the 500-sheet feeder Sheet feeder pickup and feedingSheet feeder pickup and feed diagram 500-sheet feeder I/O block diagram Printing from the 1,500-sheet feeder500-sheet feeder pickup and feed diagram Sheet feeder lifting mechanism 500-sheet feeder lifting mechanismEnvelope feeder I/O block diagram Envelope feederEnvelope feeder pickup and feed diagram Envelope feeder pickup and feedingEnvelope feeder pickup delay jam Envelope feeder jam detectionEnvelope feeder pickup stationary jam Duplexer I/O block diagram DuplexerDuplexer pickup and reversing diagram Reversing and duplexer pickupDuplexer jam detection Stacker and stapler/stacker Stacker and stapler/stacker paper pathPower-on sequence for the stacker and stapler/stacker Stacker driver PCA block diagram StackerStacker components Component Purpose SwitchStacker feed and delivery SolenoidStacker feed stationary jam Stacker jam detectionStacker feed jam Stacker residual media jamStapler/stacker driver PCA block diagram Stapler/stackerStapler/stacker feed and delivery Stapler/stacker components Component PurposeStapler/stacker motors, solenoids, and sensors block diagram Staple mode feed and delivery Staple mode feed and delivery diagram 1Staple mode feed and delivery diagram 2 Staple mode feed and delivery diagram 4 Staple mode feed and delivery diagram 6 Stapler unit I/O block diagram Stapler unitStapler unit operation Stapler unitFront view Staple operation 2 Staple operation 3Stack mode feed and delivery Staple level detectionStapler/stacker feed stationary jam Stapler/stacker jam detectionStapler/stacker feed jam Stapler/stacker delivery jamImage-formation system Image formation block diagram Electrostatic latent-image formation Primary chargingWriting the image Writing the image to the photosensitive drumDeveloping the image Developing the imageTransferring the image Transferring the imageFusing the image Q2431-90912 Theory of operation Print cartridge memory chip Print cartridge memory chipPowerSave Resolution Enhancement technologyFormatter system EconoMode Input/outputPrinter memory PJL overview Control panelRemoving and replacing parts Page After completing service Removal and replacement strategyBefore performing service Required toolsPhillips machine screw with captive star washer Screws used in the printerScrew measurement guide Phillips screw with self-tapping threadsAccess to the transfer assembly and to the registration Parts-removal treePrinter input tray, and cabinet wheel locks Location of printer, input trays, and cabinet wheel locksUser-replaceable parts Print cartridgePrint cartridge 1 Transfer roller Open the control-panel door and trayTray 1 pickup roller Tray 1 pickup roller 1Tray 1 separation pad Tray 1 separation padTray 2 feed rollers Tray 2 feed rollers 2Tray 2 feed rollers 3 Accessory covers and the tray 2 extension door Covers, tray 1, and the rear output binAccessory covers 3 Formatter cover Top cover Top cover 1Top cover 3 Top cover 4Top cover 5 Right-side cover Right-side cover 1Right-side cover 3 Left-side cover Left-side cover 1Tray Tray 1 1Slide the tray 1 door to the right and remove it Tray 1 3 Tray 1 5 Slide the paper guide to the left to remove itTray 1 6 Rear output bin Rear output bin 1Control-panel display Control-panel overlayControl-panel assembly Control-panel assembly 1Control-panel assembly 2 Control-panel assembly 4 Internal components Firmware DimmFirmware Dimm Formatter assembly Formatter assemblyFuser Output delivery assembly Output delivery assembly rear view, formatter side 1Output delivery assembly 2 Duplexing pendulum assembly Duplexing pendulum assembly 1 oDuplexing pendulum assembly 2 Tray 2 media-size sensor Tray 2 media-size sensor 1Main cooling fan left side Main cooling fan 1Main cooling fan 3 Cooling fan right side HP LaserJet 4300 series printer only Cooling fan HP LaserJet 4300 series only 1Cooling fan HP LaserJet 4300 series only 3 Cooling fan HP LaserJet 4300 series only 5 Laser/scanner 1 Laser/scanner 3 Laser/scanner 4Print-cartridge motor HP LaserJet 4300 series printer only Print-cartridge motor HP LaserJet 4300 series only 1Print-cartridge motor HP Laserjet 4300 series only 1 Main motor Main motor 1Remove it Main motor 3 Tray 2 lifter-drive assembly Tray 2 lifter-drive assembly 1Tray 2 lifter-drive assembly 2 DC controller PCA 1 DC controller PCA 2 Paper-pickup assembly Paper-pickup assembly 1Paper-pickup assembly 3 Paper-pickup assembly 5 Main drive assembly Main drive assembly 1Main drive assembly 2 Power supply right side 1 Power supply 2 Power supply tray 2 cavity 4 Paper-feed belt assembly Paper-feed belt assembly 1Tray 1 paper-pickup assembly Tray 1 pickup assembly 1Tray 1 pickup assembly 2 Tray 1 pickup assembly 4 Paper feed assembly Paper feed assembly 1Paper-feed assembly 2 Reinstall note Hint Registration assembly Registration assembly 1Registration assembly 3 Transfer assembly Transfer assembly 1Transfer assembly left rear view 2 Transfer assembly 3 Transfer assembly 5 Sheet feed rollers AccessoriesSheet feeder assembly Sheet feeder right-side coverSheet feeder right-side cover 2 Sheet feeder right-side cover 4 Sheet feeder control PCA Sheet feeder control PCASheet feeder media-size sensor Sheet feeder media-size sensor 1Sheet feeder lifter-drive assembly Sheet feeder lifter-drive assembly 1Sheet feeder paper-pickup drive assembly Sheet feeder paper-pickup drive assembly 1Sheet feeder paper-pickup drive assembly 3 Sheet feeder paper-pickup drive assembly 5 Sheet feeder paper-pickup drive assembly 7 Sheet feeder feed rollers Sheet feeder separation rollerSheet feeder door 500-sheet feeder door 1Sheet feeder door 3 Sheet feeder rear cover 500-sheet feeder rear cover 1500-sheet feeder right-side cover 1 500-sheet feeder right-side cover 3 500-sheet feeder control PCA 1 500-sheet feeder media-size sensor 500-sheet feeder lifter-drive assembly 1 500-sheet feeder lifter-drive assembly 2 500-sheet feeder lifter-drive assembly 4 500-sheet feeder paper-pickup drive assembly Removing and replacing parts Q2431-90912 Troubleshooting Troubleshooting Q2431-90912 Q2431-90912 Troubleshooting Introduction Troubleshooting process Initial troubleshooting checklist Initial troubleshooting checklist Miscellaneous Troubleshooting flowchart Troubleshooting flowchart 1Troubleshooting flowchart 2 Power-on checks OverviewPower-on defect or blank display Problem Action Power-on defect or blank display Troubleshooting tools Information pagesMenu map Sample menu mapConfiguration ConfigurationSupplies status Supplies statusGaining access to the embedded Web server Embedded Web serverSettings tab Information tabNetworking tab Printer Status and Alerts software Other linksTo select status messages To view status messages and informationResets submenu Values Explanation Using control-panel menusResets submenu Information see System Setup submenu onDiagnostics menu Diagnostics menu Values ExplanationService menu service PIN codes For the HP LaserJet 4300 productService ID Restoring the Service IDConverting the Service ID to an actual date To perform a cold reset Printer resets and power-on modesCold reset Nvram initializationTo initialize the hard disk Power-on bypassHard-disk initialization Skip disk loadSelf test Test pages Engine testFormatter test Communications checks Interface troubleshootingEIO troubleshooting Computer direct connect parallel testJetdirect JetdirectCritical-error messages Display-message troubleshootingError messages Status messagesAlphabetical printer messages Alphabetical printer messages Message Description ActionSee DC controller PCA on Top cover is open or the top Press the H ELP Button for Dimm on Firmware Dimm onSee Power supply on See Configuration page onSwitches and sensors on 336 , 500 -sheet feederConfiguration page on Fuser onSee Fuser on Sheet feeder media Stacker or stapler/stacker LED Blinks in amberOn page 241 to see if Size detection onPrinter has detected that an If the print cartridge appears Stacker or stapler/stacker LED blinks in amberStacker or stapler/stacker LED See Firmware Dimm on Power supply on Sheet feeder Control PCA onSee 1,500-sheet feeder Stapler/stacker LED is Error applies to the stapler/stackerAmber this error applies to OnlyOn page 340, or Tray was installed with Use the control panel to Configuration of tray XX. The tray Press the S Elect Select the Paper Handling Numerical printer messages Numerical printer messages Message Description ActionCartridge on See Paper-path See Printer switches Install the paper-feedAssembly sensor flag on Sheet feeder switchesPaper-feed assembly sensor Printer switchesCorrectly install Location of printer switchesSee Location of printer 336 and Fuser onRemoving and replacing JAM in Output Device Functions to OFF Tray 2 feed rollers onDescription Drivers and Software . Check Replace the Dimm or Scanner assembly on ZZ Error NumberFormatter assembly on Cartridge fan error F2 Main fan error F1DC controller Air temperature sensorPower supply Sensor. See Main cooling59.00, 59.10, 59.20 Motor Or 59.4 EP Motor failureLJ 4300 only Print-cartridge motor Assembly. See Tray 2 lifterFeeder lifter-drive assembly On page 209 or 1,500-sheet60.4 Is offAmber Settings and defaults onIs continuously illuminated Stapler unit onInitialize Nvram on Initialize the hard disk onCritical hardware error has Turn the printer off and then Paper-path troubleshooting Jam locationsPaper-jam recovery To disable the paper-jam recoveryCommon causes of paper jams Cause Solution Avoiding paper jamsBasic troubleshooting for persistent jams Persistent jamsData collection General paper-path troubleshooting Paper-path checklistPaper-path test To perform a paper- testTray 1 paper-pickup assembly on Causes of tray 1 jams SolutionCauses of tray 2 jams Solution Drive assembly on page 179 and/or PrinterCauses of tray 3 and or tray 4 jams Solution Jams in tray 3 and/or trayDrive assembly on Causes of paper-path jams SolutionCauses of duplex path jams Solution Jams in the paper pathCause Solution Media transport problemsCauses for multiple pages feeding Solution Multiple pages feedCauses for skewed paper Solution Registration assembly onPaper is skewed Image-formation troubleshooting Print quality problems associated with mediaPrint quality problems associated with the environment Print quality problems associated with jamsOverhead transparency defects Image defects Does the problem repeat on the page?HP paper specification Image qualityCheck the print cartridge EconoModeHalf self-test functional check Drum rotation functional checkImage defect tables Print quality image defectsPrint quality image defects Light print partial Possible cause Recommended actions Light print entire Possible cause Recommended actionSpecks or dots Possible cause Recommended action Dots in the paper path directionCartridge Wrong toner density setting Might cause problems if the paper isHave this problem because they are not Wrong fuser setting for media typeHorizontal lines opposite the paper path direction Grey background Possible cause Recommended actions Repeating defects and repeating images Distorted imagesSkew Possible cause Recommended actions Curl or wave Possible cause Recommended actionsCreases Possible cause Recommended actions White lines opposite the paper path Scattered lines Possible cause Recommended actions Line detail setting is turned offWhite spots on black Possible cause Recommended actions Blurred print Possible cause Recommended actionsReplace the laser/scanner assembly. See Laser/scanner BlackBlank or white Possible cause Recommended actions Dark print Repetitive defects troubleshooting Repetitive defect rulerTroubleshooting the stacker and the stapler/stacker Initial checksStacker paper path test Jam errorsStacker and stapler/stacker paper path Delivery area Printer connection areaStapler/stacker paper path test DamagedQ2431-90912 Troubleshooting Paper transport errors Malfunction errorsPaper transport error troubleshooting Component errors Printer component locations Main printer partsLocation of main printer parts 2 Location of main printer parts 3 Location of main printer parts 4 Printer switches and sensors Location of printer switches and sensorsPrinter motors and fans Location of printer motors and fansPrinter PCAs Location of printer PCAsAccessory component locations Sheet feeder main partsSheet feeder switches, sensors, solenoids, and PCAs Location of 1,500-sheet paper feeder main parts 1 Location of 1,500-sheet paper feeder main parts 2 Sheet feeder switches, sensors, solenoids, and PCAs Stapler/stacker stapler assembly Location of the stapler/stacker stapler unitStacker and stapler/stacker switches and sensors Stacker and stapler/stacker motors and solenoids Stacker and stapler/stacker PCAs Location of the stacker and stapler/stacker PCAsPrinter and accessory wiring diagrams HP LaserJet 4200 wiring diagramHP LaserJet 4300 wiring diagram Sheet feeder wiring diagram 500-sheet feeder wiring diagram Duplex accessory wiring diagram Envelope feeder accessory wiring diagram Stacker accessory wiring diagram Stapler/stacker accessory wiring diagram DC controller block diagram DC controller topGeneral timing diagrams HP LaserJet 4200 general timing diagramHP LaserJet 4300 general timing diagram Stapler/stacker timing diagram Troubleshooting Q2431-90912 Parts and diagrams Ordering parts, supplies, and getting support Ordering informationHP-authorized resellers and support Accessories and supplies Memory, fonts, and mass storage Part number Exchange number Cables and interfaces Part number Exchange numberPrinter maintenance kit Part number Exchange numberHow to use the parts lists and diagrams Documentation Part number Description or useParts diagrams and lists External covers and panelsExternal covers and panels Part number Description Reference Main assemblies 1 Main assemblies 1 Part number Description Reference Main assemblies 2 Main assemblies 2 Part number Description Reference Main assemblies 3 Main assemblies 3 Part number Description Reference Right-side assemblies Part number Description Reference 110-127v 220-240v Main drive assembly Part number Description Reference Paper-pickup assembly Part number Description Reference RM1-0002-000CN Duplexing pendulum assembly RM1-0033-000CN Lifter-drive assembly, tray Paper pickup assembly Part number Description Reference Paper-feed assembly Part number Description Reference Registration assembly Part number Description Reference Tray 1 assembly Part number Description Reference Output delivery assembly Part number Description Reference Transfer assembly Transfer assembly Part number Description ReferenceFuser Parts and diagrams Q2431-90912 Fuser Part number Description Reference Parts and diagrams Q2431-90912 Q2431-90912 Parts and diagrams Sheet feeder main assemblies 2 Q2431-90912 Parts and diagrams RM1-0056-000CN Paper-pickup assembly 500-sheet feeder RM1-0208-000CN Lifter-driver assembly 500-sheet feeder Sheet tray Sheet tray Part number Description ReferenceQ2431-90912 Parts and diagrams 500-sheet feeder main assemblies Paper size sensing assembly outside, 1,500-sheet feeder Parts and diagrams Q2431-90912 RM1-0287-000CN Lifter-drive assembly, 1,500-sheet feeder Parts and diagrams Q2431-90912 Q2431-90912 Parts and diagrams Parts and diagrams Q2431-90912 Alphabetical parts list Alphabetical pars list Part number Description ReferenceAlphabetical pars list Part number Description Reference Paper size sensing assembly outside, 1,500-sheet feeder Alphabetical pars list Part number Description Reference Numerical parts list Numerical pars list Part number Description ReferenceNumerical pars list Part number Description Reference Numerical pars list Part number Description Reference Paper size sensing assembly outside, 1,500-sheet feeder Index Index Q2431-90912 Cassettes. See trays CD-ROM, software Index Q2431-90912 EIO Index Q2431-90912 See also support troubleshooting Help button 36 LED PCA Q2431-90912 Index Index Q2431-90912 Q2431-90912 Index See also bins Q2431-90912 Index Index Q2431-90912 LED PCA TCP/IP See also trays See also messages troubleshooting problem areas Page Q2431-90912