Oki PT390 User Manual page 66

The printer prints the following when it enters setup mode:
4. In setup mode, select "SETTING."
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
"SETTING":
SETTING
SAVE&END
DEFAULT SET
SETUP PRINT
SETTING
SELECTION ITEM
ITEM SELECTION :FEED switch pushed short.
ITEM DECSION :FEED switch pushed short.
SETUP MODE
MEMORY SWITCH
PRTURN To SETUP MENU
OTHER
SERIAL INTERFACE CONDITION
CUSTOMIZE VALUE
MEMORY SWITCH
SELECTION ITEM
65