d. Disable “Sleep mode” from the Service Utilities menu
e. Delete any Paper Presets that you may have uploaded or created using the printer
Spectrophotometer.
5. Restart the printer in Diagnostics Boot Mode and perform the “Electronics test”. If an electronic
component is identified as faulty, replace it.
6. 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 for this type of error,
see
Data-related SE 79:04 on page 30.
7. Format the Hard Disk. To do so, you will need to start the printer normally, enter the Service
Utilities menu and then the Secure Disk Erase option. Set the Erase method to “Fast Erase” and
then perform the disk erase process. This will take 45-75 minutes and will erase all user
information from the disk, resolving any issue caused by corrupt data. After the erase process, a
firmware update will be required. If this solves the issue, this is a data-related 79:04 system error
and you should follow the guidelines for this type of 79:04, see Data-related SE 79:04
on page 30.
8. Try to identify the combination of settings or actions that led to the system error and try to reach
the same result with a different combination. Escalate the issue to fix the original problem.
9. If none of the previous steps could solve the issue, escalate it with the following information:
●
Unit information: S/N, P/N, accessories
●
Conditions where the problem occurs and conditions prior to the first occurrence of the
problem
●
The result of the previous steps
●
The printer information pages (either printed and faxed or obtained through the Embedded
Web Server)
●
The System Error detailed information (it can be obtained by pressing CANCEL + Down)
●
The printer logs
Front panel displays 79:04 while printing
●
A. While printing a single job
●
B. Random 79:04 during continuous printing
A. While printing a single job
The error happens after a single job is sent. It’s easy to identify which job that has produced the error,
since every time that this same job is sent, the error is replicated.
1. Restart the printer twice (after the first restart, the printer will show the 79:04 system error again,
since the printer will attempt to reprint the last job in the queue, which is the one that caused the
issue)
2. If you are using an HP driver, update the driver to the latest version
ENWW
How to troubleshoot the 79:04 system error
37
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