Pickup motor ................................................................................................... 353 Paper-feeder driver PCA ................................................................................. 353 Scanner ............................................................................................................................................ 354 Optical scanner ................................................................................................................ 354 Upper-left scanner cover .................................................................................................
358 Upper-right scanner cover ............................................................................................... 359 Control panel ................................................................................................................... 360 Front scanner cover ......................................................................................................... 362 Lower-left scanner cover ................................................................................................. 364 Lower-right scanner cover ...............................................................................................
366 Top scanner cover ........................................................................................................... 367 Glass assembly ............................................................................................................... 368 Carriage unit .................................................................................................................... 369 Configure the SCB when replacing the carriage unit, inverter, SCB, or optical scanner ............................................................................................................................
374 Pulley assembly and motor unit ....................................................................................... 376 Rail ................................................................................................................................... 379 Inverter ............................................................................................................................. 380 Inverter unit ..................................................................................................... 380 Lid sensor ........................................................................................................................
382 SCB, CPB, and SCUID .................................................................................................... 384 Power-supply unit ............................................................................................................ 387 Scanner fan ..................................................................................................................... 389 SCB fan ........................................................................................................................... 390 Control panel fan .............................................................................................................
391 Fan filter ........................................................................................................................... 392 ADF .................................................................................................................................................. 393 ADF assembly ................................................................................................................. 393 ADF input tray sensors .................................................................................................... 395 Separation floor assembly ...............................................................................................
397 Diverter ............................................................................................................................ 399 Jam cover ........................................................................................................................ 400 Hinge assemblies ............................................................................................................ 402 Float assembly ................................................................................................................. 403 White backing ..................................................................................................................
406 Front end cover (cap) ...................................................................................................... 408 Rear end cover (cap) ....................................................................................................... 410 ADF PCA and wire harness ............................................................................................. 413 Input tray .......................................................................................................................... 415 7 Solve problems Introduction .......................................................................................................................................
418 Troubleshooting process .................................................................................................................. 419 Determine the problem source ........................................................................................ 419 ENWW xi