Visioneer PATRIOT 780 SCANNER User Manual page 102

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ROUBLESHOOTING
you received with the other scanner for the steps to remove its driver programs.
After uninstalling the other scanner's driver programs, uninstall OneTouch 4.0
using the steps on page 98, then reinstall it using the steps on page 11.
Problem: Paper feeding issues and frequent paper jams in the ADF.
How can I keep from having these issues so often?
To reduce the number of paper feeding issues and paper jams, smooth and
straighten the paper before scanning, and adjust the guides to the paper size.
Paper fed into the ADF at an angle can cause the feed mechanism to jam. If
paper feed issues are occurring more frequently, try cleaning the rollers and the
ADF pad with a soft cloth dampened with Isopropyl rubbing alcohol.
Excessive dust on the roller and ADF pad can make it appear worn and will
cause issues feeding paper. See "Cleaning the Scanner" on page 90 for cleaning
instructions. If cleaning the scanner does not resolve the problem of frequent
paper jams, the scanner's ADF pad may be worn and will need to be replaced.
See "Replacing the ADF Pad Assembly" on page 92.
Problem: The paper jams about halfway through the scan. How can
I keep this from happening?
Check the flatbed glass to make sure no items are on it when you scan from the
ADF. Multiple items placed on the flatbed glass will raise the lid slightly, thus
preventing the pages feeding through the ADF from touching the glass. When
that occurs, the pages are unable to feed back out of the ADF and the pages
can jam.
Problem: The motor runs but doesn't feed the paper. How can I fix
it?
Make sure the paper is securely seated in the ADF so the paper rests on the
rollers. The paper sensor that initiates the rollers to grab the paper might be
engaged, but the paper may not be fully in the ADF tray so the rollers cannot
grab a page to feed it through.
Problem: The scans from the ADF are always crooked. What do I
need to do to get the scans straight?
Make sure to align the paper guides to the edges of the paper. If you are
scanning items that are smaller than the paper guides' minimum adjustment,
scan these items on the flatbed glass instead.