AREA 2 and 3: Jams in the fuser and transfer area ....................... 523
AREA 4: Jams in the duplex area ................................................... 530
AREA 5: Jams in Tray 2 and the internal paper path ..................... 534
AREA 6:Jams in Tray 1 .................................................................. 538
AREA 7: Jams in optional Trays 3, 4, and 5 ................................... 542
AREA 8: Jams in the optional finishing devices ............................. 546
AREA 9: Jams in the ADF .............................................................. 552
Clear staple jams ............................................................................ 553
Jam recovery ................................................................................................... 557
Product feeds multiple sheets .......................................................................................... 557
Product pulls from incorrect tray ...................................................................................... 558
Product feeds incorrect page size ................................................................................... 558
Paper does not feed automatically .................................................................................. 559
Paper does not feed from Tray 2, 3, 4, or 5 ..................................................................... 559
Transparencies or glossy paper will not feed .................................................................. 560
Envelopes jam or will not feed in the product .................................................................. 560
Output is curled or wrinkled ............................................................................................. 561
Product will not duplex or duplexes incorrectly ................................................................ 561
Solve image quality problems .......................................................................................................... 563
Example print quality problems ........................................................................................ 563
Repetitive defects ruler .................................................................................................... 563
Overhead transparency defects ....................................................................................... 565
Print quality problems associated with the environment .................................................. 565
Print quality problems associated with jams .................................................................... 565
Optimize and improve image quality ................................................................................ 565
Use supported paper ....................................................................................... 566
Calibrate the product ....................................................................................... 566
Specify the correct paper type ........................................................................ 566
Clean the fuser ................................................................................................ 567
Respond to control-panel error messages ...................................................... 568
Clean the registration second transfer assembly ........................... 568
Use manual print modes ................................................................................. 570
Print-quality-troubleshooting pages ................................................................. 571
Image-quality issues ........................................................................................................ 574
Interface troubleshooting .................................................................................................................. 579
Communication checks .................................................................................................... 579
EIO troubleshooting ......................................................................................................... 579
Engine diagnostics ........................................................................................................................... 580
LED diagnostics ............................................................................................................... 580
Understand lights on the formatter .................................................................. 580
HP Jetdirect LEDs .......................................................................... 580
Heartbeat LED ................................................................................ 581
Understand lights on the SCB ......................................................................... 581
Understand lights on the copy-process board (CPB) ...................................... 583
ENWW xiii
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