Fujitsu ScanSnap N1800 Operator's Manual page 457

Shadow on the leading edge of the scanned data.
■ Check item
Are the feed rollers dirty?
■ Action
Clean the feed rollers.
For more details, refer to
Vertical line on the scanned data.
■ Check item
Is the glass dirty?
■ Action
For more details on cleaning the glass, refer to
Scanned data appears skewed or distorted.
■ Check item
Has the document been loaded correctly?
■ Action
Load the document correctly.
Quality of scanned data is poor.
■ Check item
Is the glass dirty?
■ Action
Clean the glass.
Scanned data is partially cut off.
■ Check item
Depending on the paper color of the document, scanned data may be
partially cut off because the paper boundary is not recognized correctly.
■ Action
Before scanning, set the paper size to a standard one.
■ Check item
Is the document loaded correctly?
■ Action
Load the document correctly.
"7.3 Cleaning Inside the Scanner" (page
"Chapter 7 Scanner Care" (page
457
416).
412).