[Error Code] HP Designjet 500 Error 79.04 on startup

[borios66]

Hello

i got problem with mny DJ500

Yesterday it said that one of Printhead is going to be out of warranty.

Today my DJ dont even start up and said 79:04 error.

Do you have any solution on this? I tried to put out all printheads + inks and start again, but nothing happened.

Thank you for any suggs.

[Kiran Otter]

Re: HP Designjet 500 Error 79.04 on startup

So as not to duplicate efforts, let's continue here and not in PMs.

Once you remove all the printheads and inks, and printer/network cable, what happens? 79:04 or something else?

Kiran

[borios66]

Re: HP Designjet 500 Error 79.04 on startup

So as not to duplicate efforts, let's continue here and not in PMs.

Once you remove all the printheads and inks, and printer/network cable, what happens? 79:04 or something else?

Kiran

Hello again it says 79.04, without any belt movement or starting the heating processs

[Kiran Otter]

Re: HP Designjet 500 Error 79.04 on startup

Does it have a network card? Try removing it.

Kiran

[borios66]

Re: HP Designjet 500 Error 79.04 on startup

Does it have a network card? Try removing it.

Kiran

Hello,

I dont think so. I used only UsB cable, and never Saw there aby Ethernet plug
Iam really desprated

[Kiran Otter]

Re: HP Designjet 500 Error 79.04 on startup

Any accessory cards like a network card, would be located in the back of the printer behind the door on the right (as you face the back of the printer.)

500NIC.jpg
500NIC — ImgBB

If you just see two blank metal plates there, then there is no network card. In that event, I would guess you have a bad electronics module.

Kiran