To check DIMM installation................................................................27 3 Maintenance Understanding approximate supplies-replacement intervals................................................................30 Replacing supplies...............................................................................................................................31 Locating supplies.................................................................................................................31 Supply replacement guidelines............................................................................................31 Replacing the fuser..............................................................................................................32 Managing the print cartridge.................................................................................................................33 HP print cartridges...............................................................................................................33 Non-HP print cartridges.......................................................................................................33 Print-cartridge authentication...............................................................................................33 Print-cartridge storage.........................................................................................................33 Print-cartridge life expectancy.............................................................................................33 Checking the supply level....................................................................................................34 Using the control panel.......................................................................................34 Using the embedded Web server........................................................................34 Using HP Web Jetadmin.....................................................................................34 Replacing print cartridges...................................................................................34 To replace the print cartridge..............................................................35 Cleaning the printer..............................................................................................................................37 Cleaning spilled toner..........................................................................................................37 Vacuum specifications........................................................................................37 Calibrating the printer...........................................................................................................................38 Tools for troubleshooting......................................................................................................................39 Using printer information pages...........................................................................................39 Configuring e-mail alerts......................................................................................................40 Using the embedded Web server........................................................................................40 To open the embedded Web server by using a network connection..................41 Embedded Web server sections.........................................................................41 Using the HP Easy Printer Care Software...........................................................................43 Supported operating systems.............................................................................43 To use the HP Easy Printer Care Software.........................................................43 HP Easy Printer Care Software sections............................................................44 Using the HP Printer Utility for Macintosh............................................................................45 To open the HP Printer Utility in Mac OS X V10.2..............................................45 To open the HP Printer Utility in Mac OS X V10.3..............................................45 HP Printer Utility features....................................................................................45 4 Theory of operation Engine control system..........................................................................................................................48 Power-on sequence.............................................................................................................49 Motors, fans, and solenoids.................................................................................................50 Laser/scanner system..........................................................................................................................52 Pickup-and-feed-system.......................................................................................................................53 Sensors in the pickup-and-feed system trays (cassettes)...................................................54 Cassette pickup mechanism................................................................................................55 Multipurpose-tray pickup mechanism..................................................................................56 Feed-speed control..............................................................................................................56 Sensor jam detection...........................................................................................................58 iv ENWW