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Student
Posts: 1
Member Since: ‎06-09-2017
Message 1 of 9 (20,592 Views)

79 service error - turn off then on

Product Name: Laserjet Pro 400 M401n
Operating System: Microsoft Windows 7 (64-bit)

The printer that we use is throwing off a 79 service error code.  I have turned the printer off and on, unplugged the power cord and ethernet cable.  I updated the firmware all to no avail.  We are currently on a network with seven computers connected to the printer.  Any help would be greatly appreciated.  Thanks.

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Distinguished Professor
Posts: 3,429
Member Since: ‎05-09-2011
Message 2 of 9 (20,573 Views)

Re: 79 service error - turn off then on

If you power cycle the printer with the network cable disconnected does it go to a ready state?

If it does then one of the PCs is probably sending a corrupt job to the printer.

Since there's only 7 PCs you can go ahead and check the print queues on them and clear-out any pending jobs.

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You can even click both buttons. . .
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Teacher
Posts: 84
Member Since: ‎04-17-2017
Message 3 of 9 (20,551 Views)

Re: 79 service error - turn off then on

Hi Nicole8       ,

 

 

do you still face the 79 service error problem in the printer.

Student
Posts: 1
Member Since: ‎12-19-2017
Message 4 of 9 (14,669 Views)

Re: 79 service error - turn off then on

I'm getting this error on our Laserjet 200 M251nw - we've restarted the printer and cleared all the print queues in our house so it's not a specific document. The printer starts up, waits about 15 seconds, and then we receive this error and it restarts. How do we resolve it?

PhD Student
Posts: 726
Member Since: ‎05-12-2017
Message 5 of 9 (14,643 Views)

Re: 79 service error - turn off then on

I had a 79 service error yesterday on a HP Laserjet Pro M501dn. The printer sometimes booted to that error straight away. Some other times it was booting to ready state and as soon as you were plugging the usb cable, it was giving the same error again. Also, sometimes it was booting to "ready to download". So what I did:

 

1) Downloaded the latest firmware

2) NVRAM initialization

 

The problem finally fixed only when I replaced the formatter.

 

I put this information here and maybe it will be useful to someone.

 

Cheers!

Printer Engineer for a HP Platinum Partner

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Honor Student
Posts: 2
Member Since: ‎12-26-2017
Message 6 of 9 (14,351 Views)

Re: 79 service error - turn off then on

I'm having the same issue on a Laserjet Pro 200 MFP.

 

Its caught in a bootloop, and i tried the NVRAM initialization, which i think i did right, but to no avail. Can't get to main menu to update firmware.

Top Student
Posts: 1
Member Since: ‎02-15-2018
Message 7 of 9 (11,024 Views)

Re: 79 service error - turn off then on

Hi,

The issue is caused by the "WS Discovery" service which causes the printer to be overwhelmed with incoming network traffic responses and produces 79 error or won't print via the network.  The solution is to turn off the "WS Discovery" which can only be done through the HP WebJet software.

Cheers!

 

HP-Printer.jpg

Honor Student
Posts: 2
Member Since: ‎02-27-2018
Message 8 of 9 (10,016 Views)

Re: 79 service error - turn off then on

Hi there,

I'm facing the same issue on my Color Laser Jet Pro MFP M277 dw.

Tried CousinDave's solution but that didn't help.

Honor Student
Posts: 2
Member Since: ‎02-27-2018
Message 9 of 9 (10,012 Views)

Re: 79 service error - turn off then on

Forgot to say that the error occurs only when trying scan to a remote storage. 

That worked fine some days ago.  No changes have been made since.

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