Circuit diagram ................................................................................................................. 276 How to use the parts lists and diagrams .......................................................................................... 278 Types of screws ............................................................................................................... 278 Scanner and ADF assemblies .......................................................................................................... 280 Scanner components .......................................................................................................................
282 ADF components .............................................................................................................................. 284 Convenience stapler components (HP LJ 3392 only) ...................................................................... 286 Formatter, LIU, HP jewel, and nameplate ........................................................................................ 288 External covers and panels .............................................................................................................. 290 Internal components (1 of 4) ............................................................................................................
292 Internal components (2 of 4) ............................................................................................................ 294 Internal components (3 of 4) ............................................................................................................ 296 Internal components (4 of 4) ............................................................................................................ 298 Engine-controller assembly ..............................................................................................................
300 Main-drive assembly ........................................................................................................................ 302 Duplexing-drive assembly ................................................................................................................ 304 Tray 2 cassette and tray 3 cassette/feeder ...................................................................................... 306 Duplexing assembly .........................................................................................................................
308 Fuser assembly ................................................................................................................................ 310 Alphabetical parts list ....................................................................................................................... 312 Numerical parts list ........................................................................................................................... 317 Appendix A All-in-one specifications Physical specifications .....................................................................................................................
324 Supplies specifications ..................................................................................................................... 324 Performance ..................................................................................................................................... 325 Electrical specifications .................................................................................................................... 327 Power consumption ..........................................................................................................................
327 Environmental specifications ............................................................................................................ 328 Acoustic emissions ........................................................................................................................... 328 Appendix B Warranty information Hewlett-Packard limited warranty statement .................................................................................... 330 Print Cartridge Limited Warranty Statement .....................................................................................
331 Extended warranty ........................................................................................................................... 332 Appendix C Regulatory statements Declaration of conformity (HP LaserJet 3390, 3392, 3055, and 3050) ............................................ 334 Country/region-specific safety statements ....................................................................................... 335 Laser safety statement .................................................................................................... 335 Canadian DOC statement ................................................................................................
335 Korean EMI statement ..................................................................................................... 335 Finnish laser statement .................................................................................................... 336 Japan power cord statement ........................................................................................... 336 Index ................................................................................................................................................................. 337 ENWW xi