Roland VS540 - banding/ color drop out

[SIGN.DIVISION]

Hey all. I have a VS540 in my shop since 2020. When I’m printing a panel for a wrap, i more than not get a band running all the way across the print. It only happens when printing black and sometimes grey. I’ve cleaned the encoder strip, doesn’t seem to change it. If I run a powerful clean, that seems to help on the next print or as in the photo with the red, it will be be very miniamal. Any ideas on a fix?

 

[cornholio]

So the banding is vertical?

 

[SIGN.DIVISION]

Here is another example. It’s basically on every panel of this wrap I’m printing. It’s done this since I first bought it.

 

[SIGN.DIVISION]

So the banding is vertical?

It runs from left to right if your looking at the printer, it’s horizontal

 

[Jim Hancock]

You should run a nozzle test print and the fill test, both in service mode and post the results.

 

[Joe House]

If it's horizontal, I'd check the feed encoder disk. This serves the same function as the encoder strip, but fit the feed direction. Clean as necessary.

 

[SIGN.DIVISION]

Hey fellas. So I cleaned both the encoder strip and disk. It seems to be worse. Now it looks like it’s running both ways. Ran some heavy cleaning cycles. No luck. Any other ideas

View attachment IMG_6599.jpeg

 

[SIGN.DIVISION]

Here’s what the print looks like now. Definitely got worse and there is additional banding running the opposite direction. I’ve never had it run that way. See a few inches below that D. It’s running front to back, along with a thin line at the right side running left to right. View attachment IMG_6599.jpeg

 

[Terry01]

If the banding is spaced evenly, the roll has been laid on its side, without the carriers in the ends.
Try another roll and see if it persists.

 

[SIGN.DIVISION]

If the banding is spaced evenly, the roll has been laid on its side, without the carriers in the ends.
Try another roll and see if it persists.

It’s totally random and main only happens when printing black. Sometimes greys and browns. No other colors.

 

[SIGN.DIVISION]

So I just tried to print that black panel in high quality mode and there is absolutely not banding.. WTH? So I guess it’s only doing it in standard mode. Any ideas?

I just checked and I replaced my captop (oem) at the end of June. So I just ordered a new one…

I can remember if changing makes it better for a while. If not, should I replace the encoder strip and disk? Should the board be replaced also when doing that?