IBM 6400-I15 Maintenance Manual - Page 145

Hex Code Printout

Page 145 highlights

Hex Code Printout A hex code printout ("hex dump") prints every ASCII character received from the host computer with its corresponding two-digit hexadecimal code. Hex dumps can be used to troubleshoot printer data reception problems by comparing the printed hex data to the data sent from the host. In a hex dump, every character is printed as its assigned ASCII symbol and as the hexadecimal value of the character. A character that does not have a printed symbol (for example, a control character) is printed as a period (.) and the hex value of the control character. If the printer is 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 convert an ASCII character to its corresponding hex code, or vice-versa, refer to the ASCII code chart on page 147. Step Key 1. Press: Stop Displayed Result NOT READY Notes Places the printer in Not Ready mode. 2. Press: Scroll + Scroll OPERATOR MENU UNLOCKED 3. Press: Menu OPERATOR MENU PRINTER CONTROL 4. Press: Enter PRINTER CONTROL INTERFACE SELECTION 5. Press: Scroll UNTIL PRINTER CONTROL HEX PRINT MODE Press both keys at the same time. Unlocking the Enter key allows you to test the printer. First of the series of configuration menus. Moves down to the Interface Selection option. Moves down to the Hex Print Mode option. Troubleshooting 145

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145
Troubleshooting
Hex Code Printout
A hex code printout (“hex dump”) prints every ASCII character received from
the host computer with its corresponding two-digit hexadecimal code. Hex
dumps can be used to troubleshoot printer data reception problems by
comparing the printed hex data to the data sent from the host.
In a hex dump, every character is printed as its assigned ASCII symbol and
as the hexadecimal value of the character. A character that does not have a
printed symbol (for example, a control character) is printed as a period (.)
and the hex value of the control character.
If the printer is 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 convert an ASCII character to its corresponding hex code, or vice-versa,
refer to the ASCII code chart on page 147.
Step
Key
Displayed Result
Notes
1.
Press:
Stop
NOT
READY
Places the printer in Not
Ready mode.
2.
Press:
Scroll
Scroll
+
OPERATOR
MENU
UNLOCKED
Press both keys at the
same time. Unlocking
the
Enter
key allows you
to test the printer.
3.
Press:
Menu
OPERATOR
MENU
PRINTER CONTROL
First of the series of
configuration menus.
4.
Press:
Enter
PRINTER
CONTROL
INTERF
ACE SELECTION
Moves down to the
Interface Selection
option.
5.
Press:
Scroll
UNTIL
PRINTER
CONTROL
HEX PRINT MODE
Moves down to the Hex
Print Mode option.