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