Line of Dots Appears in All Scanned Images
If a line of dots appears in all your scanned images, try these solutions:
Clean the scanner glass with a soft, dry, lint-free cloth or use a small amount of glass cleaner on the cloth, if necessary. Paper towels are not recommended.
Do not spray glass cleaner directly on the scanner glass.
Make sure any interface cables are securely connected at both ends.
Remove any dust or dirt that may have adhered to your original.
Do not press with too much force on the original or the document cover.
Keep the document cover closed to prevent dirt or dust from getting inside.
Solving Flatbed Scanner Dock Problems