Image defect examples ..................................................................................................... 419
Light print (partial page) ................................................................................... 419
Light print (entire page) .................................................................................... 419
Specs ............................................................................................................... 420
Dropouts ........................................................................................................... 420
Lines ................................................................................................................. 421
Gray background .............................................................................................. 421
Toner smear ..................................................................................................... 422
Loose toner ...................................................................................................... 423
Repeating defects ............................................................................................ 423
Repeating image .............................................................................................. 424
Misformed characters ....................................................................................... 424
Page skew ........................................................................................................ 425
Curl or wave ..................................................................................................... 425
Wrinkles or creases .......................................................................................... 426
Vertical white lines ........................................................................................... 427
Tire tracks ......................................................................................................... 427
White spots on black ........................................................................................ 428
Scattered lines ................................................................................................. 428
Blurred print ...................................................................................................... 429
Random image repetition ................................................................................. 429
Repetitive defect ruler ...................................................................................... 431
Solve network printing problems ....................................................................................................... 433
Solve copy problems ......................................................................................................................... 434
Prevent copy problems ..................................................................................................... 434
Image problems ................................................................................................................ 434
Media-handling problems ................................................................................................. 435
Performance problems ..................................................................................................... 437
Solve fax problems ............................................................................................................................ 438
Solve sending problems ................................................................................................... 438
Solve receiving problems .................................................................................................. 439
Solve e-mail problems ....................................................................................................................... 441
Validate the SMTP gateway address ............................................................................... 441
Validate the LDAP gateway address ................................................................................ 441
Solve network connectivity problems ................................................................................................ 442
Troubleshooting network printing problems ...................................................................... 442
Loopback test .................................................................................................................... 442
Ping test ............................................................................................................................ 443
Solve stapler/stacker problems ......................................................................................................... 444
Solve 3-bin mailbox problems ........................................................................................................... 451
Functional checks .............................................................................................................................. 454
Early boot diagnostic test .................................................................................................. 454
Engine test ........................................................................................................................ 454
Formatter test .................................................................................................................... 455
Half self-test ...................................................................................................................... 455
Drum-rotation test ............................................................................................................. 456
MFP resets ........................................................................................................................................ 457
Cold reset .......................................................................................................................... 457
NVRAM initialization ......................................................................................................... 457
Hard-disk initialization ....................................................................................................... 458
xii ENWW
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