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MrK327
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DESIGN JET 500 Prints black bars

HP Recommended
Dessign Jet 500 42+HPGL Card
Microsoft Windows 10 (64-bit)

Wide Format plotter will randomly print black bars across the sheet . It may do several passes and then go back to the what it's suppose to plot or it may black bar the entire sheet unless the sheet is cancelled. We have upgarded the firmware and have installed the latest drivers in an attempt to prevent this issue. And the maddeding thing is: it is completely random. Sometimes it will do it to three times in a row and then not again for the next 7 plots. 

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davidzuts
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Did you replace the printehad. If not do so.

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MrK327
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Yes, we replaced the black printhead.
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styloid
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If its printing good black it not likely to be the printhead

 

I would change the following in order of their cost and lieklyhood

 

1) Trailing cable  (few $ and simple) 

 

2) Carriage (more costly and complicated - ebay about $100)

 

3) Electronics module (simple but quite costly. ebay about $150)

 

Good luck

 

Peter 

 

 

 

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