Networking tab ..................................................................................................316 Other links .........................................................................................................317 Printer Status and Alerts software .....................................................................................317 To select status messages................................................................................318 To view status messages and information.........................................................318 Control-panel menus ..........................................................................................................................319 Using control-panel menus.................................................................................................319 Resets submenu ................................................................................................................320 Diagnostics menu ..............................................................................................................321 Service menu (service PIN codes).....................................................................................323 Service ID ..........................................................................................................324 Converting the Service ID to an actual date......................................................324 Restoring the Service ID ...................................................................................324 Printer resets and power-on modes....................................................................................................325 Cold reset ...........................................................................................................................325 To perform a cold reset .....................................................................................325 NVRAM initialization ..........................................................................................................326 To initialize NVRAM ..........................................................................................326 Hard-disk initialization ........................................................................................................327 To initialize the hard disk....................................................................................327 Power-on bypass................................................................................................................328 Skip disk-load ....................................................................................................328 Self-test..............................................................................................................328 Test pages ..........................................................................................................................................329 Engine-test page ................................................................................................................329 Formatter test page ............................................................................................................330 Interface troubleshooting ....................................................................................................................331 Communications checks.....................................................................................................331 Computer direct connect (parallel) test .............................................................331 EIO troubleshooting ...........................................................................................................331 Jetdirect page/Embedded Jetdirect page (HP LaserJet 4250/4350 Series printers)..............................................................................................................332 Display-message troubleshooting ......................................................................................................333 Status messages ...............................................................................................................333 Warning messages ............................................................................................................333 Error messages ..................................................................................................................333 Critical-error messages ......................................................................................................333 Alphabetical printer messages ...........................................................................................333 Alphabetical printer messages...........................................................................334 Numerical printer messages ..............................................................................................348 Numerical printer messages..............................................................................348 Paper-path troubleshooting.................................................................................................................365 Overview.............................................................................................................................365 Jam recovery .....................................................................................................................366 To disable the jam recovery...............................................................................366 Avoiding jams .....................................................................................................................367 Persistent jams ..................................................................................................................368 Basic troubleshooting for persistent jams..........................................................368 Data collection ...................................................................................................368 General paper-path troubleshooting..................................................................368 x