How to troubleshoot the 79:04 System Error 37
Troubleshooting
• Application that is being used; RIP or driver that is being used
• Application/RIP/Driver settings
• Type of output files this application, RIP or driver is generating
• Some sample files that are representative of what the customer is using
• Operating System
• Method of connection to the printer
• A description of the normal flow when the issue occurs and the typical frequency of occurrence (i.e.
once every hour when sending non stop several files, each of them with multiple copies)
With this information, the environment can be replicated in order to try and find workarounds. This is also
the information that will be needed at the GBU to investigate and fix the root cause of this issue once it is
escalated.
Hardware related SE79:04
Hardware is, by far, the least likely cause of a 79:04 system error. Replacing hardware components does
not normally fix the issue and increases the total turn around time in finding a workable solution.
In some cases, a failure in a component in the printer’s electronics may cause a 79:04 system error, since
the printer’s electronics are involved in the execution of the firmware and the processing of jobs. It needs
to be noted, however, that hardware failures in the electronics tend to produce specific system errors that
point directly to the component that is failing.
Some HW causes that could be behind a 79:04 error are:
• Defective clusters in the Hard Disk drive. If these clusters are used to execute the firmware or to
process a job, they may produce a 79:04. It needs to be noted however, that most 79:04 errors that
are resolved by an HDD replacement are in fact, data related 79:04 that could have been solved
more efficiently and quickly following the steps in Section 3.
• Defective memory segments. If the RAM memory has some defective segments, a 79:04 may occur
when these segments are used.
• Intermittent defects in the electronic components that are involved in the processing of a job:
Carriage PCA, Trailing cable, Formatter and Print Mech. This is a highly unlikely cause, since defects
in these components will produce subsystem specific errors.
Symptoms
There’s no single set of symptoms behind hardware related 79:04 system errors. The most usual ones,
however are:
• 79:04 during start up. Rebooting the printer may or may not solve the problem
• 79:04 while processing or printing a job. Rebooting the printer and printing the same job does not
always produce the error.
Solutions and workarounds
In the following procedure perform each step as it appears in the list and only move on to the next step
once you are sure the 79:04 error has not been cleared:
1. Reboot the printer in Diagnostics Boot mode and execute the service tests to validate the functionality
of all the electronics components
• Execute the troubleshooting for “data related” system errors, refer to page 3, Data related
SE79:04
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