42Troubleshooting
Note:
The test printing prints across the entire width of the carriage. Make sure that the printer is loaded with the widest paper available in order to avoid damage to the print head and platen.
Hexadecimal dump
This procedure prints in hexadecimal format all codes (character codes and control codes) that are sent to the printer by the computer. The printer does not execute any control codes (such as 0A - linefeed), it just prints them out. The hexadecimal dump is useful when you are writing programs for printer control.
❏Make sure that paper is loaded in the printer.
❏Turn off the printer.
❏While holding down
❏To exit the Hex Dump Mode, turn the printer off.
Adjusting the dot alignment
You may never have to use the procedure described in this section, but after you have been using your printer for some time you may find that the dots of some graphics do not align correctly. For example, what should look like:
may come out looking like one of the following:
or like this
This is caused when mechanical parts of the printer get out of alignment. This happens only rarely and you may never experience it at all throughout the life of the printer. If you do have problems, use the following procedure to correct it.
❏Make sure that paper is loaded in the printer.
❏Turn off the printer.
