Front panel displays 79:04 at start-up
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Restart the printer twice. If the system error has been caused by a job in an incorrect format,
restarting twice will clear the error (the first time after restart, the printer will attempt to print the job
again, and this will cause the error to re-appear). If restarting the printer twice solves the issue,
then it is an issue related to the job and you should refer to
Job related SE79:04 on page 26.
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Update the printer’s firmware. Even if the currently installed firmware version is the latest one,
reinstall it. Since the printer cannot start normally, you will need to update the firmware while
booting the printer in Diagnostics Boot Mode. For this, a special file and a special update process
will be needed. You can find the specific information for the printer model you are troubleshooting
on page 13, Appendix A .
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Disconnect the network cable and restart the printer. If this solves the problem, then it is a network
related 79:04 and you should follow the guidelines for this type of 79:04, refer to
Network
related SE79:04 on page 29.
1. Remove all cartridges, printheads and printhead cleaners (if available). Unload the media. Restart
the printer. If the printer can start normally, insert the consumables one by one until you isolate the
one that is causing the error. Do NOT insert any of the replaced consumables in another printer.
2. Restart the printer in Diagnostics Boot Mode and perform the “Electronics test”. If an electronic
component is identified as faulty, replace it.
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Restart the printer in Diagnostics Boot Mode and Reset the EEROM. If the issue is solved by
this, this is a data related 79:04 system error and you should follow the guidelines, refer to
Data related SE79:04 on page 27.
3. If the unit has been used for some time and suddenly has started to show this behavior, replace
the Hard Disk Drive (it may be included with the Formatter in some models).
4. If the issue is new and the issue happens since the first boot, do NOT replace the HDD.
5. If none of the previous steps solved the issue, escalate the issue with the following information:
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Unit information: S/N, P/N, accessories
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Conditions where the problem occurs and conditions prior to the first occurrence of the
problem
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The results of the previous 8 steps
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The System Error detailed information (this can be obtained by pressing CANCEL + Down)
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The printer logs.
Front panel displays 79:04 during printer operation – not while sending jobs
1. Restart the printer.
2. Update the printer’s firmware. Even if the currently installed firmware version is the latest one,
reinstall it.
3. Reset the printer to factory defaults.
4. In order to narrow the scope of the issue, try the following:
a. Disable the queue
b. Disable any unused network protocols
ENWW
How to troubleshoot the 79:04 system error
33
Troubleshooting