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With paper inserted in the printer, turn off the printer power switch once. If
you turn on the switch again while holding down the FEED switch on the
control panel, the data shown in Section C-1 will be printed. If you turn on the
switch again and press the FEED switch briefly, the data shown below will be
printed.
When "HEX DUMP" is printed, press and hold down the FEED switch for one
second or longer to place the printer in hex dump mode.
In hex dump mode, all signals sent from the host computer to the printer are
printed as hexadecimal codes. The printed data can be used to confirm that
the correct control codes have been sent to the printer by a created program.
To reset this mode, turn off the power switch once.
Sample hex dump test printout
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000000 1B 40 1B 63 30 02 1B 6F. @. c0..o
Address Hex ASCII
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・
ITEM SELECTION :FEED switch pushed short.
ITEM DECSION :FEED switch pushed short.