Use check that has more than 60% reflectance at the printing surface.
Do not load check that is curled or has been folded.
Always close the printer cover before printing or scanning. The printer does not print or scan when the printer cover is open.
When scanning, insert the check with the scanning side face down. When scanning both sides, the first page should be inserted face down.
When scanning, insert the check with the left edge aligned with the left side of the slot.