
10 Contents
Admin Settings ...............................................................................................292
Default Settings..............................................................................................331
Tray Management ..........................................................................................342
Panel Language .............................................................................................347
Panel Lock Function ............................................................................... 348
Enabling the Panel Lock ................................................................................348
Disabling the Panel Lock................................................................................348
Limiting Access to Copy, Fax, Scan, and Print from USB Operations ... 349
Changing the Language ......................................................................... 350
Setting the Energy Saver Option ............................................................ 351
About the Concurrent Jobs Feature ....................................................... 352
Resetting to Factory Defaults ................................................................. 353
Entering Characters................................................................................ 354
Using the Keyboard Displayed on the Operator Panel ..................................354
Using the Number Pad...................................................................................354
10 Troubleshooting .....................................................................355
Clearing Jams......................................................................................... 356
Avoiding Jams................................................................................................356
Identifying the Location of Paper Jams ..........................................................357
Clearing Paper Jams From the DADF ...........................................................358
Clearing Paper Jams From the Bypass Tray .................................................360
Clearing Paper Jams From the Standard 550 Sheet Tray .............................362
Clearing Paper Jams From the Fusing Unit ...................................................365
Clearing Paper Jams From the Optional 550 Sheet Feeder ..........................369
Jam Problems ................................................................................................371
Basic Printer Problems ........................................................................... 375
Display Problems.................................................................................... 376
Printing Problems ................................................................................... 377
Print Quality Problems............................................................................ 379
The Output Is Too Light .................................................................................380
Toner Smears or Print Comes Off..................................................................381
Random Spots/Blurred Images ......................................................................382
The Entire Output Is Blank .............................................................................383
Streaks Appear on the Output........................................................................384
Part or the Entire Output Is Black...................................................................384
Pitched Color Dots .........................................................................................385
Vertical Blanks ...............................................................................................386
Mottle .............................................................................................................386
Ghosting.........................................................................................................387
Light-Induced Fatigue ....................................................................................387
Fog .................................................................................................................388
Bead-Carry-Out (BCO)...................................................................................388
Jagged Characters.........................................................................................389
Banding ..........................................................................................................390
Auger Mark.....................................................................................................390
Wrinkled/Stained Paper .................................................................................391
Damage on the Leading Edge of Paper.........................................................392