Tire tracks ..........................................................................................................383 White spots on black .........................................................................................384 Scattered lines ..................................................................................................385 Blurred print .......................................................................................................386 Random image repetition ..................................................................................387 Blank page (ADF)...............................................................................................388 Page skew (ADF)...............................................................................................389 Vertical lines (ADF)............................................................................................390 Image shifted (ADF)...........................................................................................391 Unexpected image (ADF)...................................................................................391 Repetitive defect ruler.........................................................................................................392 Media-transport problems....................................................................................................................394 E-mail problems...................................................................................................................................396 To validate the SMTP gateway address.............................................................................396 To validate the LDAP gateway address.............................................................................396 Fax problems.......................................................................................................................................397 Network connectivity problems............................................................................................................397 Troubleshooting network printing problems .......................................................................397 Loopback test......................................................................................................................397 Ping test..............................................................................................................................398 Functional checks................................................................................................................................399 Engine test..........................................................................................................................399 Formatter test......................................................................................................................399 Half self-test........................................................................................................................400 Drum-rotation test...............................................................................................................400 MFP resets..........................................................................................................................................401 Cold reset............................................................................................................................401 NVRAM initialization...........................................................................................................401 Hard-disk initialization.........................................................................................................402 Tools for troubleshooting.....................................................................................................................403 Using the embedded Web server.......................................................................................403 Opening the embedded Web server..................................................................403 Information tab...................................................................................................404 Settings tab........................................................................................................404 Digital Sending tab.............................................................................................405 Networking tab ..................................................................................................405 Other links..........................................................................................................405 Using the HP Toolbox.........................................................................................................407 Supported operating systems............................................................................407 Supported browsers...........................................................................................407 Opening the HP Toolbox....................................................................................408 Status tab...........................................................................................................408 Alerts tab............................................................................................................408 Set up Status Alerts page..................................................................409 Administrative settings page.............................................................409 Device Settings window.....................................................................................409 Toolbox links......................................................................................................409 Other links..........................................................................................................409 Using HP Web Jetadmin software......................................................................................410 Information pages...............................................................................................................411 xii