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HP Z5400 DesignJet
Microsoft Windows 7 (64-bit)

After downloading firmware update CH_05_00_00.5 a couple of weeks ago, my user started getting a System error code 79:04 when printing. 

 

After researching, I saw that one of the enhancements for update CH_04_00_00.9 was to fix the random System error code 79:04 when printing.

 

I rolled the firmware back to previous version, CH_04_00_00.9, and there has not been any problems.

 

Has anyone experienced this?  Know what the cause is?  How to fix?

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