5-2 M3091DC Image Scanner Operation Guide
Problem Item to be Checked Correction
Is half tone processing being
executed?
Specify correct half tone processing
by using the main unit.
Result of
reading graphics
and photographs
is unsatisfactory.
Is the interior of the automatic
document feeder clean?
Clean them according to Section
4.3, "Cleaning."
Is half tone processing being
executed?
Select binary (black and white)
processing by using the main unit.
Results of
reading
characters and
diagrams are
unsatisfactory
Is the interior of the automatic
document feeder clean?
Clean them according to Section
4.3, "Cleaning."
Images are
misaligned or
distorted.
Are documents set straight on the
document support?
Set the documents straight using
the document guides.
Is the pad clean? Clean the pad according to Section
4.3.2, "Cleaning the Automatic
Document Feeder."
Double feeding
(*1) occurs
frequently.
Is the pad worn? Replace the pad unit.
Is the pick roller clean? Clean the pick roller according to
Section 4.3, "Cleaning."
Is the pick roller worn? Replace the pick roller unit.
Paper is not
being fed (stops
enroute).
Is any foreign matter on the
transfer path?
Remove foreign matter from the
transfer path (see Section 4.1,
"Handling a Paper Jam").
*1 Double feeding means that two or more sheets of paper are fed
together.