Printronix P6000L User's Reference Manual page 175

To verify a proper host computer to printer interface, the data stream sent from the host can be
printed in hexadecimal code with ASCII character equivalents. The hex code printout, or hex
dump, provides a listing of ASCII character data sent from the host with their corresponding
two-digit hex code. Nonprintable characters are indicated with a period symbol. A p" before
the hex code indicates an active Paper Instruction (PI) line; a blank space before the hex code
indicates an inactive PI line. To print the data stream sent from the host computer in hex code
with ASCII character equivalents, perform the following steps.
1. Place the printer offline.
2. Repeatedly press CONFIG MENU until the DIAGNOSTICS message is displayed.
3. Press CONFIG VALUE; CONFIGURATION PRINTOUT will be displayed.
4. Press CONFIG MENU; PRINT STREAM DATA IN HEX CODE will be displayed.
5. Press RUN/STOP TEST; the display will be OFFLINE HEX DUMP
6. Press ONLINE; the display will indicate ONLINE HEX DUMP
7. Send the data from the host; the hex dump will print.
8. Press ONLINE again to stop the hex dump. Press RUN/STOP TEST to exit HEX DUMP.
9. Repeatedly press CLEAR FAULT to place the printer off line.
10. Place the printer on line.
Maintenance 8-5