3.To turn off hex dump mode, press the PAUSE button and then turn off the printer.
Look at the hex dump printout shown in Step 2. By comparing the characters printed in the right column with the printout of the hexadecimal codes, you can check the codes being sent to the printer. If characters are printable, they appear in the right column as ASCII characters. Nonprintable codes, such as control codes, are represented by dots.
As an example of how to interpret a hex dump printout, look at the first five hex codes on the first line of the printout sample (1B 40 1B 55 31). Each hex 1B represents the ESC code, 40 represents @, 55 represents U, and 31 represents the numeral 1. Check the first line of the right column and you will find a dot, an @ sign, another dot, a U, and a 1. If you look in Appendix B, you will see that these are the commands to initialize the printer and turn on unidirectional mode.
Maintaining the Printer
Cleaning the printer
To keep your printer operating at its best, you should clean it thoroughly several times a year.
If you have installed the optional pull tractor, remove it before cleaning the printer.
1.Turn off the printer and close all of its covers.2.Using a soft brush, carefully remove all dust and dirt.