Load an original document faceup, short edge first into the ADF tray or facedown on the scanner glass.
If you are loading a document into the ADF tray, then adjust the paper guides.
From the home screen, navigate to:
Fax > enter the fax number > Options
From the Resolution area, touch the arrows to select the resolution you want.
Note: Select a resolution from Standard (fastest speed) to Ultra Fine (best quality at a reduced speed).
Touch Fax It.