Envelopes with double-side seams.....................................................................23 Envelopes with adhesive strips or flaps..............................................................24 Card stock and heavy media ..............................................................................................24 Card-stock construction......................................................................................24 Card-stock guidelines..........................................................................................24 Loading media......................................................................................................................................25 Main input tray.....................................................................................................................25 Priority feed slot...................................................................................................................25 Specific types of media .......................................................................................................25 Setting media types..............................................................................................................................26 Set the media type...............................................................................................................26 3 Maintenance Life expectancies of parts that wear ....................................................................................................28 Cleaning the product............................................................................................................................30 Cleaning the print path.........................................................................................................31 Cleaning the print-cartridge area.........................................................................................32 Cleaning the pickup roller....................................................................................................34 User-replaceable parts ........................................................................................................................35 Replacing the pickup roller..................................................................................................35 Replacing the separation pad..............................................................................................38 Replacing the main input tray (paper-pickup tray assembly)...............................................40 Replacing the output-bin extension (delivery-tray assembly)..............................................41 Jams.....................................................................................................................................................42 Clearing jams.......................................................................................................................42 Typical media jam locations................................................................................42 Removing a jammed page..................................................................................43 4 Operational overview Basic functions.....................................................................................................................................46 Formatter system.................................................................................................................................47 Central processing unit .......................................................................................................47 RAM.....................................................................................................................................47 USB interface.......................................................................................................................47 Parallel interface (HP LaserJet 1015 printer only)...............................................................47 Control panel.......................................................................................................................47 Draft mode (EconoMode)....................................................................................................48 HP Memory Enhancement technology (MEt)......................................................................48 Enhanced I/O ......................................................................................................................48 PJL overview ......................................................................................................................49 Printer functions...................................................................................................................................50 Engine control system (engine control unit and power assembly).......................................50 Printer-engine-control system.............................................................................51 Printer laser/scanner unit ...................................................................................52 Power system on the engine power assembly....................................................53 Image-formation system......................................................................................................54 The seven image-formation processes ..............................................................55 Print cartridge......................................................................................................................56 Printer paper-feed system...................................................................................................56 Jam detection .....................................................................................................................58 iv ENWW