Upper-cover assembly, Remove the upper-cover assembly | HP 400

Upper-cover assembly

Before proceeding, remove the following components:

●Right cover. See Right cover on page 23.

●Scanner assembly. See Scanner assembly on page 26.

●Simplex products

◦Rear door. See Rear door (simplex product) on page 33.

◦Rear cover. See Rear cover and feed guide (simplex product) on page 37.

●Duplex products

◦Rear upper cover. See Rear-upper cover (duplex product) on page 30.

●Control panel and right-arm mount. See Control panel and right-arm mount on page 48.

●Right-front cover and power button. See Right-front cover and power button on page 28.

Remove the upper-cover assembly

1.Remove four screws (callout 1).

Figure 1-65Remove the upper-cover assembly (1 of 3)

1

ENWW	Removal and replacement procedures 51

Image 77

HP 400 manual Upper-cover assembly, Remove the upper-cover assembly

Contents

M375 M475 Page Page Trademark Credits Copyright and License Conventions used in this guide Conventions used in this guide Table of contents Enww Solve problems 111 135 Load Tray 1 Type SIZE, Press OK to use available media Enww Enww 218 Parts and diagrams 245 291 279289 Enww Index 313 List of tables Xviii List of figures 35 Remove the rear door simplex product 1 74 Reinstall the left cover 1 137 Remove the fuser 1 101 Rollers 124 Xxiv Removal and replacement Introduction Removal and replacement strategyRemoval and replacement strategy Required tools Electrostatic discharge Description Size Part Number Types of screwsCommon fasteners After performing service Service approachBefore performing service Test 1 print-quality test Post-service testsTest 2 copy-quality test Test 3 fax-quality test fax models only 2Parts removal order 1 Parts removal order 3Parts removal order 2 Removal and replacement Transfer roller Removal and replacement proceduresRollers and pads Pickup roller Tray 2 and Tray 4Remove the pickup roller 1 5Remove the pickup roller 2 Removal and replacement 6Remove the pickup roller 1 Separation roller Trays 2 or Enww 9Reinstall the separation roller Reinstall the separation roller Document feeder pickup roller assembly Pickup roller and separation pad Tray 13Remove the Tray 1 pickup roller 2 Removal and replacement 15Remove the Tray 1 separation pad Print-cartridge drawer Main assemblies Enww Dimm cover Right cover 22Remove the right cover 3 Removal and replacement 24Remove the document feeder input tray 2 Document feeder input tray 25Remove the scanner assembly 1 Remove four screws callout Scanner assembly Enww Right-front cover and power button Enww Rear-upper cover duplex product 30Remove the rear-upper cover 2 Removal and replacement 32Remove the feed assembly 2 Paper-feed guide assembly Rear-door stopper and link caps simplex product 36Remove the rear door simplex product 2 Rear door simplex product Enww 40Remove the rear door duplex product 2 Rear door duplex product Enww Remove the rear cover and feed guide simplex product Rear cover and feed guide simplex productBefore proceeding, remove the following components Remove three screws callout Enww Enww Rear-lower cover and rear-door links duplex product Enww Enww Enww Remove the rear-door rib assembly duplex product Rear-door rib assembly duplex product Enww 58Replace the link guide simplex products Link guide Control panel and right-arm mount 63Reinstall the control panel and right-arm mount 1 Reinstall the control panel and right-arm mount Enww Remove the upper-cover assembly Upper-cover assembly Enww 69Reinstall the upper-cover assembly 2 Reinstall the upper-cover assembly Enww Remove the left cover Left cover 73Remove the left cover 3 Removal and replacement 75Reinstall the left cover 2 Reinstall the left cover Remove the front-door assembly Front-door assembly 78Remove the front-door assembly 3 Enww Enww Push the black-plastic arm into the product Reinstall the front-door assembly 85Remove the front-door assembly 10 Enww 89Remove the ITB 2 Intermediate transfer belt ITB 91Remove the ITB 4 Removal and replacement 93Remove the ITB 6 Reinstall the ITB Diagnostics 95Remove motor M1 and motor M2 1 Drum motor M1 and developer motor M2 96Remove motor M1 and motor M2 2 Removal and replacement 97Remove motor M1 and motor M2 3 Release one tab callout 100Remove motor M1 and motor M2 6 Reinstall the drum motor M1 and developer motor M2 Intermediate PCA Remove the formatter PCA and fax PCA Formatter PCA and fax PCAReplacing the formatter PCA before the DC controller PCA 104Remove the formatter 1 of 4 base model 106Remove the formatter 3 of 4 base model 108Remove the wirelss PCA 1 Remove the wireless PCA callout Wireless PCA Before you proceed, remove the following components DC controller PCAReplacing the DC controller PCA before the formatter PCA 110Remove the DC controller PCA 1 Remove the DC controller PCA Enww Remove the fuser-motor assembly Fuser-motor assembly Enww Enww Reinstall the fuser-motor assembly 117Remove the fuser-motor assembly 6 Remove the high-voltage power-supply PCA High-voltage power-supply PCA Enww Enww Remove the color-misregistration sensor assembly Color-misregistration sensor assembly 126Remove the color-misregistration sensor assembly PCA 3 Reinstall the color-misregistration sensor assembly 127Remove the color-misregistration sensor assembly PCA 4 Enww Fan FM1 131Remove the fan FM1 2 Remove the USB PCA USB PCA fax/memory-card models Remove the duplex-reverse drive assembly Duplex-reverse drive assembly Release the wire harnesses from the retainer callout 136Remove the duplex-reverse drive assembly 4 Fuser 137Remove the fuser 1 Remove the fuser Enww 141Remove the fuser 5 142Remove the fuser 6 144Remove the fuser 8 145Reinstall the fuser Removal and replacement Reinstall the fuser Remove the paper-delivery assembly Paper-delivery assembly Enww 149Remove the paper-delivery assembly 4 Tray cassettes and optional Tray 3 assembly Solve problems Solve problems checklist Print a menu map Menu map General topic Questions Troubleshooting processPretroubleshooting checklist Power-on checks LED diagnostics Troubleshooting toolsComponent diagnostics Control-panel tests Component testsTest the control-panel display Test the control-panel buttons Plug/jack locations Diagrams DC controller PCA Location of connectorsConnector Board Enww 1Major components Location of major componentsMajor components Enww 2Solenoid, sensors, and motors Motors and fans Item Description Rollers PCAs PCAs 5Optional 250-sheet cassette Optional 250-sheet cassette General timing diagram General circuit diagram 129 Asic diagram HVT / Toneremp Driver PCA1-1 Environment Sensor FSR diagram Diagram Print the Configuration Print quality troubleshootingService Internal print quality test pages Clean the paper path Print-quality troubleshooting toolsPrint the Service Print the cleaning Control panel menus Setup MenuCalibrate the product Calibrate the product from the control panel Menu item Description HP Web Services menu Reports menu Menu item Sub-menu item Description Quick Forms menu Menu item Sub-menu item Description Fax Setup menu Menu item Sub-menu item Private Receive Off System Setup menu Use the Y Shift setting to center the image from top to Adjust Tray X1 ShiftSide on the first side of a two-sided Bottom on Off Supply Settings Black Cartridge Very Low Setting Prompt Disable FaxProduct Security USB Flash Drive Print Black Color Cartridges Very Low Setting StopLow Threshold Cyan Enter percentage Magenta Yellow Not on Supply Store Usage Data On SupplyCourier Font Regular Dark Color Copy Service menu Install Off RestoreDefaults HP Smart Network Setup menu Copy menu Function specific menusSets the product so that it communicates only with Web ID Copy Specifies the paper size and type Fax menu Jobs Displays pending fax jobs, Scan menu Opens the Fax Setup menu Interpret control panel messages 10.100X Supply Memory ErrorControl panel message types Control panel messages Scanner Error Error, Turn off then onFuser Error Black Cartridge Low Fan Error, Turn off then onError Turn off then on Canceled send. Clear document Canceled scan. Clear documentBlack in wrong position Black Very Low Cyan Cartridge Low Communication errorCyan in wrong position Cyan Very Low Device is busy. Try again later Device error, press OKDocument feeder door is open Document feeder jam. Clear and reload Engine error. Press OK to continue Engine Communication ErrorDocument feeder mispick. Reload Door open Fax is busy. Redial pending Fax is busy. Canceled sendFax receive error Fax storage is full. Canceling the fax receive Fax Send error Genuine HP supply installed Fax storage is full. Canceling the fax sendInstall color cartridge Fit to Page on flatbed only Invalid entry Invalid driver Press OKJam in area, Open door and clear jam Jam in Tray 1, Clear jam and then press OK Load tray X Press OK for available media Load Tray 1, Plain Size / Cleaning mode, OK to startMagenta Cartridge Low Magenta in wrong position Manual feed Size TYPE, Press OK to use available media Manual Duplex Load Tray 1, Press OKMemory is low. Press OK Memory is low. Try again later Memory low Only 1 copy made. Press OK to continue No fax answer. Canceled sendMisprint, Press OK No dial tone No fax detected No fax answer. Redial pending Scanner error #, Turn off then on Print failure, press OK. If error repeats, turn off then onRemove shipping lock from color cartridge Remove shipping locks from cartridges Settings cleared Scanning error Cannot connectScanner reserved for PC scan Unexpected size in tray # Load size Press OK Unsupported color Press OK to continue Used color installed, to accept press OKUsed color in use Used supplies in use Yellow Very Low Event-log messagesYellow in wrong position Event log messages Print the event log7Event-log messages Event code Description Troubleshooting tools 177 Event-log-only messages Description SolutionEvent-log messages 8Event-log-only messages Event code Description Solution Jam locations Clear jamsCommon causes of jams Clear jams from the document feeder Enww Clear jams in Tray Enww Enww Clear jams in Tray Clear jams in the fuser area Clear jams in the output bin Clear jams in the duplexer duplexing models only Enww Product does not pick up paper Solve paper-handling problemsProduct picks up multiple sheets of paper Print quality examples Solve image-quality problemsProblem Cause AaBbCc Problem Cause Solution Severity of the defect Continue Black Color image defects AaBbCc Clean the pickup and separation rollers Clean the productClean the paper path Clean the paper path from the product control panel Clean the scanner glass strip and platen Clean the document feeder pickup rollers and separation pad Clean the touch screen Factors affecting print performance Solve performance problems Print speeds Product does not print Product does not print or it prints slowly Product prints slowly Solve direct-connect problems Solve product connectivity problemsSolve network problems Computer is using the incorrect IP address for the product Computer is unable to communicate with the product Solve wireless network problemsComputer or workstation might be set up incorrectly Wireless connectivity checklist Cannot connect more computers to the wireless product Wireless network is not functioning Network does not appear in the wireless networks list Service menu Service mode functionsSecondary service menu Service menu settings Secondary service menu structure Open the secondary service menu9Secondary service menu Scan Calibration Calibrate Nvram initialization Product resetsRestore the factory-set defaults Enww Fax troubleshooting checklist Solve fax problems Enww Communication error Fax error messagesDocument feeder door is open. Canceled fax Fax is busy. Canceled send Fax is busy. Redial pending Fax receive error Fax storage is full. Canceling the fax receive Fax Send error No dial tone Fax storage is full. Canceling the fax sendNo fax answer. Canceled send No fax detected No fax answer. Redial pending Enww Code number View and interpret fax error codesTroubleshoot fax codes and trace reports Fax trace report Fax logs and reports Print individual fax reports Print all fax reports Set the fax-error-correction mode Change error correction and fax speedSet the fax error report An error message displays on the control panel Solve problems sending faxesCommunication error. message displays Change the fax speed Open the Error Correction menu No fax answer. message displays Fax is busy. message displays Fax storage is full. message displays Document feeder paper jam Unable to use fax functions from the control panel Faxes can be received, but not sent Unable to use group dials Unable to use speed dials Enww Fax does not respond Solve problems receiving faxesFax has a dedicated phone line An answering machine is connected to the product Voice mail is available on the fax line Answer Mode setting is set to the Manual settingTelephone handset is connected to the product Product uses a fax over IP or VoIP phone service Product is connected to a DSL phone service No fax detected. message displays Open the Advanced Setup menu Open the Fax Resolution menu Cannot send or receive a fax on a PBX line Sender receives a busy signalFax is received but does not print Faxes are sending slowly Solve general fax problems Fax cuts off or prints on two pages Fax quality is poor Enww Product updates Enww Parts and diagrams Orderable parts Order parts by authorized service providersWhole unit replacement 5Related documentation and software Related documentation and software Part number Cartridge number Description Supplies and accessoriesService parts How to use the parts lists and diagrams Scanner and document feeder main assemblies Description Part number Qty Scanner and document feeder main assemblies Covers 2External panels and covers Parts and diagrams Covers 1,2 Internal assemblies 1 Internal assemblies 8Internal assemblies 1 4Internal assemblies 2 Internal assemblies 2 9Internal assemblies 2 5Internal assemblies 3 Internal components 3 10Internal assemblies 3 A03 Internal assemblies 4 11Internal assemblies 4 7Internal assemblies 5 Internal assemblies 5 12Internal assemblies 5 8Internal assemblies simplex models Internal assemblies simplex models 13Internal assemblies simplex models 9Internal assemblies duplex models Internal assemblies duplex models Description Part number 14Internal assemblies duplex models 10 PCAs PCAs PCAs Sheet paper feeder optional Tray Input devices 16250-sheet paper feeder optional Tray 17Alphabetical parts list Alphabetical parts list Internal assemblies 5 Internal assemblies 4 Paper pickup assembly RM1-8045-000 18Numerical parts list Numerical parts list RL1-3053-000 Motor, developer DC M1 RM1-8051-000 Paper-pickup guide assembly duplex Enww Service and support HP Product Duration of Limited Warranty Hewlett-Packard limited warranty statement Hewlett-Packard limited warranty statement Enww Data stored on the print cartridge End User License Agreement Transfer Enww OpenSSL LJColorMFPM475 Customer support Product specifications Table B-1Physical specifications Physical specificationsTable B-2Environmental specifications1 Product Height Depth Width Weight Regulatory information FCC regulations Power consumptionEnvironmental product stewardship program Protecting the environment Paper use Toner consumptionPlastics HP LaserJet print supplies Multiple returns more than one cartridge Non-U.S. returnsSingle returns Shipping Residents of Alaska and Hawaii Material restrictions Paper Chemical substances Material Safety Data Sheet Msds For more information Supplementary Information Declaration of conformityManufacturers Name Manufacturers Address For regulatory topics only Boise, Idaho USAOctober Enww Declaration of conformity wireless models Types of memory Certificate of volatilityVolatile memory Non-volatile memory Laser safety Safety statementsVcci statement Japan Power cord instructions Power cord statement Japan Luokan 1 laserlaite EMC statement Korea Laser statement for Finland Restriction on Hazardous Substances statement Ukraine GS statement Germany EU Statement for Telecom Operation Additional statements for telecom fax productsNew Zealand Telecom Statements Additional FCC statement for telecom products US Industry Canada CS-03 requirements Telephone Consumer Protection Act US Enww Additional statements for wireless products Korean statement Enww Enww Index Symbols/Numerics 2ndary service menu Msds Jams USB Control-panel tests 117 Curled media Demo 116 Diagrams 121 288 Macintosh customer support Material Safety Data Sheet Enww Page CE863-90966* *CE863-90966