Xerox 4112-4127 Enterprise Printing System-192 - Manual (Page 100)

PDL principles and procedures
1-74 Using LCDS Print Description Language
Dumps
The dump feature is a troubleshooting tool for print jobs. It allows
you to generate a hardcopy of the command and data
transmission between the host computer or the magnetic tape
and the printing system while a job is being transmitted and
printed.
Online dump
The online dump provides a printout of all the command and
data transmission taking place between the host computer and
the printing system.
Starting and ending online dump sessions
To print a dump of an online job you wish to troubleshoot, follow
these steps:
1. Specify the DFLT JDE and the OLDUMP JDL on the Online
Job Manager window at the print server. (The OLDUMP JDL,
which was loaded on your system at installation, contains the
VOLUME HOST=OLDUMP and CODE=EBCDIC commands
as well as the DFLT JDE.)
2. Run the job you intend to troubleshoot.
3. Terminate the dump session by clicking the End button on
the Online Job Manager window.
Online dump format and content
Each host command directs the printer to perform an operation
or provides control information used during printing. The control
information could be printed with carriage control only or printer
control, such as load FCB. All print commands and some control
commands transmit data to and from the printing system. The
dump format for each of these commands contains a HEADER
and DATA segment. The HEADER segment consists of the
fields shown in the following table.