Brother ADS-4300N Online User's Manual page 236

Difficulties
The document was not
fed.
The machine fed
multiple documents but
scanned only the first
document.
The document is
jammed.
The output documents
are scattered.
The scan quality is poor. Paper dust has accumulated on the
Bleedthrough is seen in
the scanned data.
Cause
Paper dust has accumulated on the
surface of the Pick Up Roller or Brake
Roller.
Too many documents are loaded in
the ADF at a time.
There are foreign objects in the ADF.
Your media is too thin or too thick.
Remote Setup is in progress.
Paper ejection has paused.
The document was curled.
Document Separation Switch is set to
(Manual Single Mode).
Paper dust has accumulated on the
surface of the Pick Up Roller or Brake
Roller.
There are foreign objects in the ADF.
Your document is not acceptable for
the machine.
The document was curled.
The Document Separation Switch is
set to (Continuous Feed Mode)
when scanning documents folded in
half, envelopes, or Multi-Layered
Transfer Paper.
The Extendable Output Tray is not set
to the correct length.
The Extendable Output Tray is not set
to the correct length.
surface of the Pick Up Roller or Brake
Roller.
Paper dust has accumulated on the
surface of the glass strips inside the
machine.
The scanner resolution is too low.
The settings are not appropriate for
the type of document being scanned.
Suggestions
Clean the Brake Roller and Pick Up Roller. See
Related Information: Clean the Scanner and
Rollers.
Make sure you do not exceed the ADF's capacity.
See Related Information: Acceptable Documents.
Remove any foreign objects or ripped paper from
the ADF.
Make sure your media is acceptable for the
machine.
See Related Information: Acceptable Documents.
Cancel Remote Setup.
Remove any paper from the ADF.
Straighten the curled document and scan again.
Set the Document Separation Switch to
(Continuous Feed Mode) and scan again.
Clean the Brake Roller and Pick Up Roller. See
Related Information: Clean the Scanner and
Rollers.
Remove any foreign objects or ripped paper from
the ADF.
Make sure your document is acceptable for the
machine. See Related Information: Acceptable
Documents.
Straighten the curled document and scan again.
Set the Document Separation Switch to
(Manual Single Mode) and scan again.
Set the Extendable Output Tray according to the
length of the document.
Set the Extendable Output Tray according to the
length of the document.
Clean the Brake Roller and Pick Up Roller. See
Related Information: Clean the Scanner and
Rollers.
Clean the glass strips inside the machine.
See Related Information: Clean the Scanner and
Rollers.
Increase the scanner resolution.
Select the Remove Bleed-through / Pattern /
Remove Background Colour check box.
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