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GTP-290 1 Station Thermal Line Printer
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(2) HEXADECIMAL DUMP MODE
POWER ON
(Turn the
power on while holding the
Repeat
button depressed, the buzzer gives
one short beep.)
Each of the signals sent from the
computer to the printer will be printed
out in hexadecimal code. This
function allows you to check if a
control code that sent to the printer
by the program being used is correct
or not.
To turn off the mode, it is necessary
to turn off the printer completely.