Instruction manual

3–41Troubleshooting
Hex Code Printout
A hex code printout (“hex dump”) lists each ASCII data character received
from the host computer and lists its corresponding two-digit hexadecimal
code. (See Figure 3–2.) Hex dumps can be used to troubleshoot some types
of printer data reception problems.
Every printable character prints both as its assigned symbol and as its hex
equivalent. Every nonprintable (ASCII control) character prints both as a
period (.) and as its hex equivalent. When using a parallel interface, the letter
“p” before a hex code indicates an active Paper Instruction (PI) line and a
blank space before a hex code indicates an inactive PI line.
To make a hex code printout, refer to the procedure on page 3–42. To convert
an ASCII character to its corresponding hex code (or vice-versa), refer to the
ASCII code chart on page 3–43.
Figure 3–2. Hex Dump Sample