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Troubleshooting
Symptom Possible Cause Remedy
The double feed detection
sensor is not operating.
There is dust from the paper on the
double feed detection sensor.
Please clean the double feed detection
sensor with the included blower.
(See page 48.)
The double feed detector sensitivity
setting does not match the scanning
document.
Change the double feed detector
sensitivity setting. (See page 25.)
Black dots or white
patches occur when
scanning with flatbed.
The document glass and cover sheet are
dirty.
Clean the document glass and cover
sheet. (See page 51.)