If double feed should occur too often, adjust the Separation Roller gap according to the following procedure.
Solution
Make sure that the size, thickness, and weight of your document meets the conditions of this scanner.
Your unit has been carefully adjusted to meet most conditions. However, the below adjustments may be needed depending on your environment (humidity, temperature, etc.) and the documents you are scanning (checks). Perform the adjustment only if necessary.
Hook your finger around the open lever and open the Maintenance Cover.
Pull out the document feed tray.
Load two checks or check-stock paper together.
Slide the two sheets through between the feeding roller and the separation roller and stop at the position shown below.
If you were unable to slide both sheets through the gap between the rollers, turn the paper thickness adjustment dial counter-clockwise (left) until both pieces together easily slide through the gap.
Gently remove one of the sheets.
Adjust the gap between the feeding roller and the separation roller to optimum width.
While one sheet remains in place between the rollers, continuously attempt to slide the second sheet (in front of the remaining sheet) to the right, back through the roller gap. Slowly turn the paper thickness adjustment dial clockwise (right) just until the second sheet stops feeding into the gap.
Turning the Adjustment Dial clockwise too much may damage the rollers.
Remove the sheets from the paper path and close the Maintenance Cover.
Confirm that the document feeds properly.
Place a marking label on the unit pointing to the adjustment dial as illustrated below. This will serve as a reference point for future adjustments if required.
