Oki PT390 Manuel D'utilisation page 78

The printer prints the following when you accept the selection of "5":
8. Select "RETURN TO UP" as your option.
Press and hold down the FEED switch for one second or longer to accept the
selection.
The printer prints the following when you accept the selection of "RETURN
TO UP":
RETURN TO UP
RETURN TO SETUP MENU
RETURN TO UP
LOW POWER
MAX SPEED
BK DENSITY (2COLOR)
PRINT DENSITY
PRINT COLOR
PRINT WIDTH
NV GRAPHIC MENORY
USER NV MEMORY
SELECTION ITEM
RETURN TO SETUP MENU
RETURN TO SETUP MENU
OTHER
SERIAL INTERFACE CONDITION
CUSTOMIZE VALUE
MEMORY SWITCH
SELECTION ITEM
76