HP Color LaserJet Enterprise Multifunction M680 Printer series - Manual (Page 175)

2. Open the scanner lid.
3. Clean the scanner glass, the document feeder
strips, and the white plastic backing with a soft
cloth or sponge that has been moistened with
nonabrasive glass cleaner.
CAUTION: Do not use abrasives, acetone,
benzene, ammonia, ethyl alcohol, or carbon
tetrachloride on any part of the product; these
can damage the product. Do not place liquids
directly on the glass or platen. They might seep
and damage the product.
NOTE: If you are having trouble with streaks on
copies when you are using the document feeder,
be sure to clean the small strip of glass on the
left side of the scanner.
4. Dry the glass and white plastic parts with a
chamois or a cellulose sponge to prevent
spotting.
5. Connect the power cable to an outlet, and then
press the power button to turn the product on.
Check the scan/send settings from the product control panel
Check the scan settings on the product.
Check the resolution settings
NOTE: Setting the resolution to a high value increases the file size and the scan time.
Follow these steps to adjust the resolution setting:
1. From the Home screen on the product control panel, scroll to and touch the Administration button.
2. Open the Scan/Digital Send Settings menu.
ENWW Improve scan image quality 163