
Symptom
Possible Cause
Remedy
Double feeding occurs
frequently.
The paper feed roller, separation
roller, or double feed prevention
roller is dirty.
Clean the paper feed roller,
separation roller, or double feed
prevention roller. (page 48)
The double feed detectors are dirty.
Clean the double feed detectors.
(page 47)
The paper feed roller, separation
roller, or double feed prevention
roller has become worn down.
Replace the paper feed roller
module, and double feed
prevention roller. (page 51)
Right and left sides of the document
to be scanned are not the same in
height, because of curling or folding.
Flatten the document (page 23)
and load it again after reducing
the number of sheets.
The document is printed on an
unsupported type of paper or thick
paper.
Make a copy of the document on
paper of a compatible type and
thickness (page 23), and then
scan the copy.
The length of the paper is too short.
Make a copy of the document on
paper of a compatible size (page
23), and then scan the copy.
The document is not aligned
correctly.
Realign the document. (page 28)
Too many sheets are set on the
feed tray.
Remove sheets until the sheets
on the feed tray are under the
limit mark on the document guide.
Documents are not being fed
separately.
Manual feeding is selected.
Select automatic feeding. (page
31)
Paper jams occur frequently.
The document is wrinkled.
Smooth out the document.
The rollers are dirty.
Clean the rollers. (page 48)
The document is not aligned
correctly.
Realign the document. (page 28)
Too many sheets are set on the
feed tray.
Remove sheets until the sheets
on the feed tray are under the
limit mark on the document guide.
Scanned image is skewed.
The document guides are not
adjusted to the size of the document
to be scanned, or the document to
be scanned is set slanted on the
feed tray.
Adjust the document guides
properly to the size of the
document to be scanned. (page
28)
Right and left sides of the document
to be scanned are not the same in
height, because of curling or folding.
Flatten the document (page 23)
and load it again after reducing
the number of sheets.
The image for a scanned
document is blank.
The document to be scanned was
loaded upside down.
Load the documents with the
surface to be scanned facing up.
Vertical streaks appear on
the scanned document.
The scanning glasses are dirty.
Clean the conveyor and scanning
glasses. (page 46)
8.1 Troubleshooting
66