Fuji Xerox ApeosPort-V C7785 Administrator's Manual page 673

 Making adjustment using [Enter Sample Number]
1) Select [Enter Sample Number] and select
[Print Sample].
2) Select the size of the paper which you
loaded in Tray 5 (Bypass), and then select [1
Sided] or [2 Sided].
3) Press the <Start> button.
Adjust Image Transfer
673
16