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Basic Sequence at Start Key ON (ADF mode/1 original)
Dust detection control
This is activated when any of the following conditions is true.
Dust has been detected in all 3 locations at previous 1 job.
Dust detection could not be activated due to JAM etc at previous job.
Footnote
F: Scanner motor moves forward (toward right).
B: Scanner motor moves backward (toward left).
Light-ON: LED on CCD unit lights-on.
ON: When CCD HP sensor (photo interrupter type) detects.