Epson TM U325D, Operator'S Manual

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Troubleshooting 3-5
9. Replace the ribbon cassette and paper roll; then close the
printer cover.
Hexadecimal Dump
This feature allows experienced users to see exactly what data is
coming to the printer. This can be useful in finding software
problems. When you turn on the hex dump function, the printer
prints all commands and other data in hexadecimal format along
with a guide section to help you find specific commands.
To use the hexadecimal dump feature, follow these steps:
1. Turn on the printer while you hold down the FEED button; then
close the cover.
2. When the printer enters the hexadecimal dump mode, it prints
“Hexadecimal Dump.”
3. Run any software program that sends data to the printer. The
printer prints all the codes it receives in a two-column format.
The first column contains the hexadecimal codes and the
second column gives the ASCII characters that correspond to
the codes.
Hexadecimal Dump
1B 40 1B 21 30 41 42 43 . @ . ! 0 A B C
44 45 46 47 0A DE F G.
❏
A period (.) is printed for each code that has no ASCII
equivalent.
❏
During the hexadecimal dump, all commands except DLE
EOT
and DLE ENQ are disabled.
4. When the printing finishes, turn off the printer or reset it to
turn off the hexadecimal dump mode.