Service-level diagnostics .................................................................................................................. 326 Engine test ....................................................................................................................... 326 Service menu ................................................................................................................... 326 Other diagnostics ............................................................................................................................. 330 Boot-up key sequences ...................................................................................................
330 Low-level boot-up key sequence for selecting a language, performing a cold reset, and enabling and disabling embedded LAN ......................................... 331 Medium-level boot-up key sequence for initializing disks ............................... 331 High-level boot-up key sequence for NVRAM initialization, manufacturing, and skipping disk-load and calibration ............................................................ 331 Drum rotation functional check ........................................................................................ 332 Calibrations ......................................................................................................................
332 Control panel touchscreen calibration ............................................................. 333 Simplified scanner and ADF calibration .......................................................... 333 ADF calibrations .............................................................................................. 336 Left side front calibration ................................................................ 336 Left side back calibration ................................................................ 338 Leading edge front calibration ........................................................ 339 Leading edge back calibration ........................................................
340 ADF plain scaling calibration .......................................................... 340 ADF heavy scaling calibration ........................................................ 341 Glass calibrations ............................................................................................ 341 Left side glass calibration ............................................................... 341 Leading edge glass calibration ....................................................... 342 Glass scaling calibration ................................................................. 343 Plain motor speed calibration .........................................................
343 Measurement and adjustment ......................................................................... 345 ADF unit height adjustment ............................................................ 345 ADF skew adjustment ..................................................................... 346 ADF width sensor adjustment ......................................................... 348 Weight solenoid stroke adjustment ................................................. 348 Tray 4 diagnostics ............................................................................................................................
349 Motor test ........................................................................................................................ 349 Standalone running test ................................................................................................... 349 Sensor test ...................................................................................................................... 350 Light-pattern interpretation ............................................................................................... 350 Clear jams ........................................................................................................................................
352 Jam locations ................................................................................................................... 352 ADF jams ......................................................................................................................... 353 Clear jams from the duplexer ........................................................................................... 354 Clear jams from the input-tray areas ............................................................................... 356 Clear jams from the output areas ....................................................................................
359 Solve repeated jams ........................................................................................................ 372 Image-formation troubleshooting ..................................................................................................... 373 xii ENWW