Oki PT330 User Manual page 52

Hold down the FEED button again for 1 second or longer until the
buzzer sounds twice. Release the FEED button after the buzzer
sounds.
This returns to the previous level and prints the Setup Menu.
Setup Menu
1.Setting
2.Setup Print
3.Save & End
4.Default Set
<Set>
Press FEED button for the number of times
as the same as your selecting item, and
wait more than 1 second.
<Return>
Continue to press FEED button more than
1 second.
Proceed to step 8.
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