Replacing and recycling supplies.......................................................................................285
HP policy on non-HP supplies............................................................................................285
Resetting the all-in-one for non-HP supplies (HP LaserJet 3390/3392 all-in-
one)....................................................................................................................285
HP fraud hotline..................................................................................................................285
Cleaning the all-in-one.........................................................................................................................287
To clean the exterior...........................................................................................................287
To clean the scanner glass and white platen (HP LaserJet 3050 all-in-one).....................287
To clean the scanner glass (HP LaserJet 3052/3055/3390/3392 all-in-one).....................288
To clean the lid backing (HP LaserJet 3052/3055/3390/3392 all-in-one)..........................289
To clean the automatic document feeder (ADF) pickup roller assembly (HP LaserJet
3052/3055/3390/3392 all-in-one)........................................................................................290
Cleaning the paper path.....................................................................................................293
To clean the paper path from HP ToolboxFX....................................................293
To clean the paper path from the all-in-one control panel.................................294
Changing the print cartridge................................................................................................................295
Changing the automatic document feeder (ADF) on the HP LaserJet 3390/3392 all-in-one.............297
Changing the automatic document feeder (ADF) pickup roller and load arm assembly
(HP LaserJet 3052/3055/3390/3392 all-in-one)..................................................................................299
13 Troubleshooting
Troubleshooting checklist....................................................................................................................304
Clearing jams.......................................................................................................................................308
Causes of jams...................................................................................................................308
Tips to avoid jams ..............................................................................................................308
Where to look for jams........................................................................................................309
Print cartridge area.............................................................................................................309
Input trays (HP LaserJet 3050/3052/3055 all-in-one).........................................................311
Input trays (HP LaserJet 3390/3392 all-in-one)..................................................................312
Output bin...........................................................................................................................315
Straight-through output path (HP LaserJet 3390/3392 all-in-one).....................................315
Automatic two-sided printing (duplexing) path (HP LaserJet 3390/3392 all-in-one)..........317
Jams occur in the automatic document feeder (ADF)........................................................320
Control-panel messages......................................................................................................................323
Alert and warning messages .............................................................................................323
Alert and warning message tables.....................................................................323
Critical error messages.......................................................................................................330
Critical error message-tables.............................................................................330
Print problems......................................................................................................................................332
Print quality problems.........................................................................................................332
Improving print quality........................................................................................332
Understanding print-quality settings..................................................332
To temporarily change print-quality settings.....................332
To change print-quality settings for all future jobs............332
Identifying and correcting print defects..............................................................333
Print-quality checklist.........................................................................333
General print-quality issues...............................................................333
Media-handling problems...................................................................................................337
Print-media guidelines........................................................................................338
Solving print-media problems............................................................................338
ENWW xiii
