How To Fix HP Service Error 79 on Laserjet Pro Printers?

HP 79 error code might face by users of Laserjet Pro on the printer’s control panel. There are two forms of this error.

The first one is 79 Error Turn off then on. The cause behind this is outdated firmware or software drivers.

The second one is 79 Service Error Turn off then on. It occurs after the installation of an incompatible DIMM.

To fix this problem quickly and easily, follow the top 2 solutions explained below. Moreover, for experts assistance, connect with a live agent over chat for help.

HP 79 Service Error

Reasons Behind 79 Error Code on HP Laserjet Pro Printers

  • The outdated firmware experienced by the printer.
  • A defective wired connection may lead to this issue.
  • Whenever you try to print a document from an unauthorized source such as a website or link.
  • Turning your printer ON and OFF so frequently cause this error 79.
  • If you try to print a document of quite a larger size.
  • The network signals might be blocked for your printer device.
  • Installation of incompatible or damaged DIMMs or motherboards.

Solution [1]: 79 Error Turn off then on

  • Firstly, turn OFF your printer, wait for 30 seconds, and now turn it ON and wait for its initialization.
  • If you are using an extension board, remove it. Now connect the printer directly to the wall socket and then turn it ON.
  • If the message “Error 79 Turn off then on” remains there. Then disconnect any network or USB cables.
  • Now examine the firmware version of your printer and update it to the newer version if available.

NOTE: You can check your firmware version by printing the configuration report from your printer control panel.

  • If the error remains there, then you need to delete all the print jobs from all the computers connected to the printer.
  • Now go to solution number two if the error message does not get resolved.

Solution [2]: HP 79 Service error Turn off then on

  • Firstly, turn OFF your printer, wait for 30 seconds, and now turn it ON and wait for its initialization.
  • If you are using an extension board, remove it. Now connect the printer directly to the wall socket and then turn it ON.
  • If the message “hp 79 service error turn off then on” remains there. Then disconnect any network or USB cables.
  • Now examine the firmware version of your printer and update it to the newer version if available.

NOTE: You can check your firmware version by printing the configuration report from your printer control panel.

  • If the problem persists, then you need to remove the installed DIMMs and rest them in isolation.
  • Now try to print any document. If it prints fine, then you need to install the DIMM supported by your printer device.
  • If the message persists, then contact HP experts.

Read more: learn how to resolve 50.2 fuser error on hp laserjet pro 400 series printers

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