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‎03-24-2021 03:49 AM

HP Recommended

Hi all

HPDesignjet 800 79:04 firmware error before printing a job..not in itself unusual..however it`s followed by this

 

Assertion failed

Task T switcher

file RedSPc.

line 4761

 

I have never seen this before..any suggsetions?

Thanks

Category:
10 REPLIES 10

‎03-24-2021 07:38 AM

HP Recommended

Hello @perthblue1960 

 

The 79:04 Error is a generic one, so the printer doesn't exactly know what is happening. If this is happening only while processing a job there is a possibility that the formatter is defective however my suggestion is to try printing a different job and if the same happens then make sure that the driver is the latest one and check the status of the printheads and cartridges.

 

Regards.

 

 

I am an HP employee
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‎03-24-2021 10:18 AM

HP Recommended

I agree with @HarryCR try printing a different print job to see if you get the same errors. Could be a corrupted print job.

If you find the information provided useful or solves your problems, help other users find the solution easier by giving kudos and marking my post as an accepted solution.
I am a volunteer, offering my knowledge to support fellow users, I do not work for HP nor speak for HP.



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‎03-25-2021 05:41 AM

HP Recommended

try to use the DJ500 PCL driver....

 

Before I used DJ500 since year 2001 & saw this error code....

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‎03-25-2021 09:35 PM

HP Recommended

Hi to all...just an update...I have proven that the error only appears when a job is sent across the network..by that I mean with the network cable disconnected you can boot and all internal and any usb printing is fine....so I am thinking next culprit network card..or formatter..I will update as I go.

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‎03-26-2021 03:46 AM

HP Recommended

It's a printhead error. It will be cured if you replace it.

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‎03-26-2021 03:56 AM

HP Recommended

Hi Piano999...how does a faulty printhead manage to print ok via usb..and the internal prints?

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‎03-27-2021 01:19 AM

HP Recommended

Unfortunately, I don't know which head is abnormal. It will definitely improve if you replace them all.

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‎03-29-2021 05:31 AM

HP Recommended

Hi @perthblue1960 

If the printer gets ready and you can print without the network cable connected that means that the Nic, network card or jetdirect is defective, and definitely is not  a printhead issue @piano999 because the machine prints fine when disconnected from the network. @perthblue1960 I suggest you don't replacing any printheads if from usb or internally the machine works fine.

 

Regards.

I am an HP employee
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‎03-31-2021 05:58 PM

HP Recommended

so just to update...I replaced the network card..however unable to configure dhcp for some reason...

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