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pbrooks259
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HP DJ 5500 - 2 colors stopped printing simultaneously on print job

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HP Designjet 5500
Has anyone ever had a 5500 stop printing simultaneously 2 or more colors? and if so what was the exact problem? I have never experienced this one--stopped printing 2 or more colors on a print job. I suppose the o rings in a couple tubes could be failing or failed simultaneously....
 
Well, I have sucked air out of ink tubes assemblies on one or two others just to see the air immediately flow back in. The o-rings were that badly worn or deteriorated. Again I am thinking from afar that this, air in tubes and therefore in printheads, most likely is the problem, but not sure.
 
This is all the info. I am getting from the customer who is about 150 miles away. I want to go prepared.
 
Sounds like air in the tubes or a bad carriage to me or possibly a bad trailing cable. Not sure at this point obviously.
 
Thanks.
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Valsimot
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It could be due to bad pressure ( air) in ink tubes. When I need to suck out air from DJ5500 I remove inky supply station from the back side of the printer and put them with ink cartridges inside on printer so they are in a higher position that printhead.

 

That will stop getting air immediately flow back in and higher position of ink cartridges makes ink flow much better when priming with the syringe.

 

 




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pbrooks259
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Good idea elevating ink cartridges. Thanks.

 

I have ordered  a refurbed ink tubes assemply from LPS Computer in preparation. I just highly suspect that is the culprit, and have to go prepared to remedy the problem especially since 150 miles away.

 

I don't think they necessarily failed simultaneously could have almost done that, but I think air simply junked each one out during the same print job. All printheads and ink show OK in front panel.

 

Thanks.

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pbrooks259
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I assume both heads failed in close timing to each other due to simply exhausted life and/or air infiltration into the heads. I replaced both heads and the ink tubes assembly. So far it seems to print ok.

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