Fujitsu ScanSnap S300 Operator's Manual page 198

Symptom
The image
scanned is too
light or too dark.
Lines on the
document are
blurred.
(Example:
Ruled lines on a
table cannot be
seen.)
The scanning
speed is very
slow.
Multi-feed
errors (*2)
occur
frequently.
178
Check This Item
Is the [Brightness (Black and
White scanning only)] setting
on [Option] of the [Scanning]
tab set to extremely Light or
Dark?
Are you scanning in color
mode, documents including
handwritten or typed text,
tables or frames with ruled
lines?
Does your PC meet the
recommended system
requirements?
Is the USB 1.1 connected?
Note: When using an USB1.1
interface, the data transfer
rate may be slower due to
large data sizes.
Is the Pad ASSY dirty?
Is the Pad ASSY worn?
Is the document stack thicker
than 1 mm?
Resolution
Adjust [Brightness] at [Scanning]
[Option] in the [ScanSnap Manager
Scan and Save Settings] dialog box.
The color mode is used for capturing
colored images like photos in high
quality. For other documents including
textual content, select the checkbox for
[Setting for text only document] at
[Scanning] [Option] in the [ScanSnap
Manager - Scan and Save Settings]
window.
If it does not improve even after you have
tried this method, change [Image quality]
setting.
Confirm the system requirements in
"Before Installing the Supplied Programs
for the ScanSnap" (page
Scanning speed will be slower whenever
the recommended CPU and memory
requirements are not met.
If this is the case, at [Scanning]
[Option] in the [ScanSnap Manager
Scan and Save Settings] dialog box,
clear the checkboxes of the following to
increase the scanning speed.
•
Correct skewed character strings
automatically
•
Allow automatic image rotation
If your PC has an USB 2.0 port, connect
the ScanSnap to this port. (If using a
USB hub, it must also support USB 2.0
interfaces.) (*1)
Clean the pad by following the
instructions in "8.2 Cleaning the Inside of
the Scanner" (page 185).
Replace the Pad ASSY by following the
instructions in "9.2 Replacing the Pad
ASSY" (page 192).
Reduce the number of sheets in the
document stack to 1 mm thickness or
less.
6).