How to remove gray background in printing

Adobe Acrobat X Standard.

When printing PDFs have grey background how to remove?

Already tried the below and that did not resolve. HELP please?

Edit -> Preferences.

Under Categories, select Accessibility.

Check Replace Document Colors and Custom Color.

Set Page Background to white.

Click OK.

TRy Edit>Preferences>Page display>Page content and information. Check the box that says "Show large images".