2.To enter hex dump mode, hold down both the LF/FF and Load/Eject buttons while you turn on the printer.
3.Open a software program and send a print job to the printer. Your printer prints all the codes it receives in hexadecimal format.
If characters are printable, they appear in the right column as ASCII characters. Nonprintable codes, such as control codes, are represented by dots. By comparing the characters printed in the right column with the printout of the hexadecimal codes, you can check the codes the printer is receiving.
4.To turn off hex dump mode, press the Pause button to stop printing and the Load/Eject button to eject the printed page(s). Then turn off the printer.