Oki C 9650dn - Manual (Page 126)

C9650 User’s Guide> 126
10. Press the Up-arrow or Down-arrow buttons repeatedly to
move through the range of paper sizes until the required size
is highlighted.
11. Press the Enter button to select this value.
12. Check that an asterisk (*) appears beside the chosen size.
13. Press the Online button to exit menu mode and return to the
ready to print status.