From the control panel, navigate to:
Settings > Device > Maintenance > Config Menu > Scanner Configuration > Scanner Manual Registration
Touch Print Quick Test.
Place the Print Quick Test page on the scanner glass, and then touch Flatbed Registration.
Touch Copy Quick Test.
Compare the Copy Quick Test page with the original document.
Note: If the margins of the test page are different from the original document, then adjust Left Margin and Top Margin.
Repeat step 4 and step 5 until the margins of the Copy Quick Test page closely match the original document.