Oki PT390 Manuel D'utilisation page 66

The printer prints the following when it enters special mode:
3. Enter setup mode from special mode.
Press the FEED switch briefly (one second or less) twice to move to "SET
UP."
Then, press and hold down the FEED switch for one second or longer to
accept the selection.
TEST PRINT
END
SAMPLE PRINT
CUTTER CLEANING
PLATEN ROLLER CLEAING
SET UP
HEX DUMP
TEST PRINT
SELECTION ITEM
ITEM SELECTION :FEED switch pushed short.
ITEM DECSION :FEED switch pushed short.
SPECIAL MODE
SET UP
↑
HEX DUMP
↑
TEST PRINT
END
SAMPLE PRINT
CUTTER CLEANING
PLATEN ROLLER CLEAING
SET UP
HEX DUMP
TEST PRINT
SELECTION ITEM
ITEM SELECTION :FEED switch pushed short.
ITEM DECSION :FEED switch pushed short.
SPECIAL MODE
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