IBM 6400i, Setup Manual

Page: 271 / 370

Cleaning Inside The Cabinet
271
Hex Code Printout
A hex code printout (or hex dump) lists each ASCII/EBCDIC data character
received from the host computer, along with its corresponding two–digit
hexadecimal code. Hex dumps can be used to troubleshoot some types of
printer data reception problems.
To convert an ASCII/EBCDIC character to its corresponding hex code (or
vice–versa), refer to the ASCII code chart in the 6400 ASCII Programmer’s
Reference Manual, or the EBCDIC code chart in the 6400 Coax/Twinax
Programmer’s Reference Manual.
Each printable character prints both as its assigned symbol and as its hex
equivalent. Each nonprintable 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.
Step Key Result Notes
9. OPERATOR PRINT TESTS
[TEST NAME] The print tests stops
printing.
10. Examine the print quality of the characters. They should be fully formed and of uniform density.
If the test does not run or if text characters do not appear correctly formed, contact your IBM
service representative.
11. NOT READY Returns the printer to the
NOT READY mode.
12. OPERATOR MENU
LOCKED Locks Program mode and
the Operator Menu.
13. READY Returns the printer to the
READY mode.
Enter
Stop
+
Scroll Scroll
Stop
Hex Code Printout