Dump mode
After the self-test is printed, the printer system enters the debugging mode. In the
debugging mode, all the volume labels will be printed as machine code. The ASCII strings
on the left are the data received by the system. The data on the right are printed from the
strings on the left, in hexadecimal values. This function is provided for users or engineers
to debug programs. You only need to restart the printer to leave the debugging mode and
return to the normal printing mode.
