1 x 500 paper feeder ...................................................................... 420
Sensors ........................................................................................................... 421
General timing chart ........................................................................................ 423
Circuit diagrams .............................................................................................. 423
Print-quality troubleshooting tools .................................................................................... 427
Repetitive defects ruler ................................................................................... 428
Calibrate the product ....................................................................................... 430
Internal print-quality test pages ........................................................................................ 431
Print-quality-troubleshooting pages ................................................................. 431
Diagnostics page ............................................................................................. 434
Cleaning page ................................................................................................. 435
Configuration pages ........................................................................................ 436
Configuration page ......................................................................... 436
HP embedded Jetdirect page ......................................................... 438
Embedded protocol page ............................................................... 439
Finding important information on the configuration pages .............. 440
Color-band test ................................................................................................ 440
Control-panel messages .................................................................................................................. 441
Event log messages ......................................................................................................................... 468
Print an event log ............................................................................................................. 468
Show an event log ........................................................................................................... 468
Clear the event log ........................................................................................................... 468
Event log message table ................................................................................................. 468
Clear paper jams .............................................................................................................................. 472
Common causes of jams ................................................................................................. 472
Jam locations ................................................................................................................... 473
Clear jams ........................................................................................................................ 473
Clear jams in the right door ............................................................................. 475
Clear jams in the output bin area .................................................................... 479
Clear jams in Tray 1 ........................................................................................ 480
Clear jams in Tray 2 ........................................................................................ 482
Clear jams in the optional 500-sheet paper and heavy media tray
(Tray 3) ............................................................................................................ 483
Clear jams in the lower right door (Tray 3) ...................................................... 484
Clear jams in the document feeder ................................................................. 485
Jam recovery ................................................................................................................... 486
Solve paper-handling problems ........................................................................................................ 487
Product feeds multiple sheets .......................................................................................... 487
Product feeds incorrect page size ................................................................................... 487
Product pulls from incorrect tray ...................................................................................... 487
Paper does not feed automatically .................................................................................. 488
Paper does not feed from Tray 2 or 3 .............................................................................. 488
Transparencies or glossy paper will not feed .................................................................. 489
Envelopes jam or will not feed in the product .................................................................. 489
xii ENWW