Need Help JFX200 White Ink Problems

[jbarry14]

When you replaced the head, did you check/enter the head ID?

Yes, but same issue was happening before replacement of the head

 

[jbarry14]

When you replaced the head, did you check/enter the head ID?

 

[Headstrike]

What if you swap the 2 head cables on the HDC? I'm thinking it might be a PCB issue.
So, connect H1 on the H2 connector on the HDC and vice versa.

 

[jbarry14]

What if you swap the 2 head cables on the HDC? I'm thinking it might be a PCB issue.
So, connect H1 on the H2 connector on the HDC and vice versa.

Are you talking about swapping these wider cables around?

 

[Headstrike]

Yeah, both even and odd with machine off. Colors will be completely off position but you should see if it stops overspraying on white and clear (and technically start on colors).

 

[Adam Vreeke]

Could this possibly be an encoder strip issue? Or less likely, a voltage issue? Sounds like you have tried just about everything else under the sun.

 

[Headstrike]

Could this possibly be an encoder strip issue? Or less likely, a voltage issue? Sounds like you have tried just about everything else under the sun.

Encoder cannot cause an overspray on only one head, but voltages do.
But unfortunately they already tried that too.

 

[Solventinkjet]

It's sounding more and more like a head unfortunately.

 

[jbarry14]

It's sounding more and more like a head unfortunately.

We just replaced the head and subtank 2 days ago with same printing results

 

[Solventinkjet]

We just replaced the head and subtank 2 days ago with same printing results

In that case, headstrike is probably right. Might be a bad PCB or environment issue. Doing the cable swap should tell you more about where the issue is. If the white stops spraying and the new color starts to spray, that tells you it's not an ink issue. If the white continues to spray, that would make it more likely to be an ink issue.

 

[jbarry14]

What if you swap the 2 head cables on the HDC? I'm thinking it might be a PCB issue.
So, connect H1 on the H2 connector on the HDC and vice versa.

I swapped the cables around. White printed great. So I am guessing it is a bad HDC PCB?

 

[jbarry14]

In that case, headstrike is probably right. Might be a bad PCB or environment issue. Doing the cable swap should tell you more about where the issue is. If the white stops spraying and the new color starts to spray, that tells you it's not an ink issue. If the white continues to spray, that would make it more likely to be an ink issue.

Yep, Swapped around the cables and the white printed great.

 

[Solventinkjet]

Yep, Swapped around the cables and the white printed great.

That would probably be the next step. The HDC board does many things but one of them is amplifying the head signal. If that circuit is malfunctioning it could affect the way the nozzles fire for a single channel. Feel free to contact us for the board. We don't stock it but can drop ship.

 

[Headstrike]

I swapped the cables around. White printed great. So I am guessing it is a bad HDC PCB?

Yeah. It sounds like the HDC needs to be replaced.

 

[jbarry14]

Yeah. It sounds like the HDC needs to be replaced.

Now i just need to fine one