Product media specifications ..................................................................................................37 Main input tray (all models) ..............................................................................................37 Automatic document feeder (ADF) specifications.............................................................38 To gain access to the optimizing feature...........................................................................38 Guidelines for using media.......................................................................................................39 Paper and transparencies ................................................................................................39 Common media problems table........................................................................................39 Labels................................................................................................................................40 Envelopes..........................................................................................................................40 Card stock and heavy media ............................................................................................41 Loading media .........................................................................................................................43 Media input tray ................................................................................................................43 Priority input tray ...............................................................................................................43 Specific types of media .....................................................................................................43 Media information for ADF originals .................................................................................43 Media information for the flatbed (HP LaserJet 3020 and 3030) .....................................44 Loading originals to copy or scan......................................................................................44 Loading originals into the LJ 3020 and 3030 ADF input tray............................................45 Loading originals onto the LJ 3020 and 3030 flatbed scanner.........................................46 3 Maintenance Life expectancies of parts that wear .......................................................................................48 Scanner calibration .................................................................................................................49 Cleaning the product ...............................................................................................................50 To clean the print path ......................................................................................................50 Cleaning the glass.............................................................................................................50 Cleaning the print-cartridge area.............................................................................................54 To cleaning the print-cartridge area (all models)...............................................................54 Cleaning the printer pickup roller (all models)...................................................................55 Cleaning the printer separation pad (all models)..............................................................56 User replaceable parts.............................................................................................................57 Printer pickup roller (all models)........................................................................................57 Printer separation pad (all models)...................................................................................59 Printer main input tray (all models)....................................................................................60 HP LaserJet 3015 ADF pickup roller ................................................................................61 HP LaserJet 3015 ADF separation pad set.......................................................................62 HP LaserJet 3015 ADF input tray......................................................................................62 HP LaserJet 3015 ADF output bin.....................................................................................63 HP LaserJet 3020 and 3030 ADF pickup roller.................................................................63 HP LaserJet 3020 and 3030 ADF separation pad............................................................66 HP LaserJet 3020 and 3030 control-panel bezel..............................................................66 4 Operational overview Basic functions (all models) ....................................................................................................70 Basic sequence of operation ...................................................................................................71 Formatter system ....................................................................................................................75 Central processing unit .....................................................................................................75 Line interface unit (HP LaserJet 3015 and 3030 only) .....................................................75 Standard boot process .....................................................................................................75 RAM ..................................................................................................................................76 Parallel interface or universal serial bus (USB) interface .................................................76 Control panel ....................................................................................................................76 EconoMode .......................................................................................................................76 MEt ....................................................................................................................................77 Enhanced I/O ....................................................................................................................77 iv ENWW