HP — HP LaserJet M4349x MFP service manual (EN)

Engine test ....................................................................................................................... 440 Formatter test .................................................................................................................. 441 Half self-test ..................................................................................................................... 441 Drum-rotation test ............................................................................................................ 442 MFP resets .......................................................................................................................................

443 Cold reset ........................................................................................................................ 443 NVRAM initialization ........................................................................................................ 443 Hard-disk initialization ...................................................................................................... 444 Individual component diagnostics .................................................................................................... 445 Paper-path-sensor test ....................................................................................................

445 Manual sensor test .......................................................................................................... 445 Scanner tests ................................................................................................................... 446 Component test ............................................................................................................... 447 Service ID ......................................................................................................................................... 448 Restoring the Service ID ..................................................................................................

448 Converting the service ID to an actual date ..................................................................... 448 Troubleshooting the embedded HP Jetdirect print server ................................................................ 449 Firmware-stack trace ........................................................................................................................ 450 Solve common Windows problems ................................................................................................. 451 Solve common Macintosh problems ................................................................................................

452 Solve Linux problems ....................................................................................................................... 455 Solve PostScript problems ............................................................................................................... 456 General problems ............................................................................................................ 456 7 Parts and diagrams Order parts, accessories, and supplies ............................................................................................

458 How to use the parts lists and diagrams .......................................................................................... 458 Screws that are used in the MFP ..................................................................................................... 459 Customer-replaceable parts and accessories .................................................................................. 460 Accessories ..................................................................................................................... 460 Customer-replaceable components (print engine) ...........................................................

462 Customer-replaceable components (ADF and scanner) ................................................. 464 Cables and interfaces ...................................................................................................... 466 Control panel and control-panel overlays ........................................................................ 469 Memory ............................................................................................................................ 471 Print cartridge and maintenance kits ...............................................................................

473 Documentation, software, and training material ............................................................................... 476 Assembly locations ........................................................................................................................... 478 External components ........................................................................................................................ 482 Print-engine internal components ..................................................................................................... 484 Upper-plate assembly ......................................................................................................

484 Internal components (1 of 5) ............................................................................................ 486 Internal components (2 of 5) ............................................................................................ 488 xiv ENWW