How to troubleshoot the 79:04 System Error 41
Troubleshooting
1. Reboot the printer twice (after the first reboot, the printer will show the 79:04 system error again,
since the printer will attempt to reprint the last job in the queue. If the issue continues occurring ran-
domly, continue troubleshooting
2. If you are using an HP driver, update the driver to the latest version
3. Upgrade the printer’s firmware. Even if the currently installed firmware version is the latest one, re-
install it.
4. Try the following changes in the workflow:
a. Change the Print Language option in the Front Panel from “Automatic” (which is the default set-
ting) to the language that is being printed (PS, HP-GL/2, …)
b. Queue = OFF
c. Start Printing = After processing
d. For PS SKUs, try changing the encoding setting (“Automatic” by default) to Binary or ASCII
e. If you are using the HP-GL/2 driver, try sending the job as a bitmap
5. If you are using a 3rd party application that does not print through the HP driver, try modifying the
printing workflow by:
a. Using an HP driver
b. Changing the settings in the application’s printing dialog
6. Escalate the issue with the following information:
• Unit information: S/N, P/N, accessories
• 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)
• Information on the workflow:
-Operating System
-Application
-Driver
- Settings in the driver and the application
- Settings in the printer
- Connection method and settings
• Exact information on how to replicate the environment that reproduces the issue, including
some example files that can be sent to the printer to replicate a heavy load environment. These
files will need to be:
- Original application files, if the issue happens printing from an application through our
driver
- Print to files if the issue happens printing from a 3rd party application
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