Oki 6E - Manual (Page 182)

B - 3
8) Interfacing parameter setting
The following settings are possible by pressing key after selecting the display
contents of the LCD of the operator panel by using and keys.
Settings are retained even when the printer power is turned off.
By pressing key, menu setting mode is completed and the printer returns to
ON-LINE state.
ENTER
PowerSave
Reset Recover
ON-LINE