Designjet 510 Frequent Reload Media Message

have a Designjet 510 that constantly tells you to reload the paper roll. Sometimes it will plot one or two plots sometimes more without reloading the roll, but usually after it gets done and cut the paper is says to load paper again.

I have replaced the media sensor and carriage assembly, and it still has the reload paper error often. When trying to calibrate after replacing the black print head it keep saying to load paper and would not calibrate. Have you seen this problem on the 510 before?  Any help would be greatly appreciated!

Thank you for your time!

Jason

The paper is probably not tracking correctly.  Sometimes the black spindle hub becomes displaced.  It needs to be snapped down against the shiny end all the way.  I suggest you examine that part.