Oki PT390 User Manual page 39

The cleaning procedure is as follows.
(1) With paper inserted in the printer, turn off the printer power
switch once, and turn on the switch again while holding down
the FEED switch on the control panel. Then, the data shown
below is printed.
Note: If you have passed the item that you want to select, repeatedly press the
FEED switch briefly until you return to the first item.
(2) Press the FEED switch briefly (one second or less) four times to
move to "CUTTER CLEANING."
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
CUTTER CLEANING
↑
PLATEN ROLLER CLEANING
↑
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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