Troubleshooting-Coax; Buffer Print (Ebcdic Hex) - Black Box PC124C Installation Manual

11. Troubleshooting—Coax
This chapter provides instructions for performing diagnostic tests on the Laser
Card. This chapter also contains a problem-resolution guide that describes
common problems with the interface or the printer and their solutions. If you are
unable to solve a problem by following the procedures outlined in this chapter,
contact Black Box Technical Support at 724-746-5500.
Before calling, verify that the Laser Card is installed correctly and that the
interface configuration settings are correct, perform the appropriate diagnostic
tests outlined in this chapter, and have the following information ready:
• Printer and interface self-test printouts
• Model number and serial number of the interface
• Description of the problem
• Type of host system or controller
You may also need to print a "hex dump" or "buffer print" by enabling the
Buffer Print option in the front-panel setup options. This causes all printing to be
in hexadecimal code, just as it's received from the host, to help in tracing
problems.
If it becomes necessary to ship the interface, use the original carton and
packaging to prevent damage.

12.1 Buffer Print (EBCDIC Hex)

The interface can be set up to print the buffer in hexadecimal code. This can be
useful for a technician to diagnose problems with the interface or the printer.
The EBCDIC hex data is printed on a grid corresponding to the data's position
in the buffer. If the hex data represents a printable character, that character is
printed below the hex data to the side in coax.
To start the EBCDIC hex dump through Host Download:
1. Verify that the interface is installed properly and the printer is in "READY"
mode.
2. Type the host-download command "&%Z42,1" on the screen.
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