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It would have been very useful to know this in the beginning of this thread. In troubleshooting, we need ALL the info we can get... It would make sense you are having color issues running 1 print head. The profiles are designed with 2 heads being used. So doing an overprint with 1 head would...

Go here and follow the instructions for Versaworks 6.7.1 at the top. Unless something has changed, all Versaworks versions support older printers. https://vw.rolanddg.com/en/hfuefb4wt.html

As FrankW asked, please post a nozzle test. You need to set Versaworks setting back to your previous settings. It is never a good idea to mess with ink settings in the RIP, as that's where you will eventually end up, with a mess. I'm presuming you were making adjustments in the "Color...

Thanks for the explanation. Agree, ribbons are the first thing to check. Just leery when the customer starts messing with them. As far as misleading errors go, I used to take care of 5 M&R iScreen direct to screen printers, which were using an Epson 9880 re-assembled onto a frame for silk screen...

Excellent! You are very welcome!

Updating the firmware doesn't change the parameters in the printer. In addition, the original parameter file is available from Mimaki. Who did you buy the head from? Based on what I'm seeing in your pic, you have a ribbon issue. Can you do a nozzle test draw and does it print a solid block like...

To Jim Hill, If you run into issues with your Roland, I would be able to help. I've been working on Roland printers since the first solvent printers and I can get Roland OEM parts.

If Roland had suggested that, they would not have designed the printers with the ability to change head heights. Time for a tech who only tells you facts.

I'm not sure if you are referring to Seiko and HP solvent printers with this suggestion of unplugging cables or if your referring to other brands of printers. I would have to ask what that is supposed to accomplish, if you could explain. Powering on a printer with ribbons unplugged should only...

OK, this gives me some info. Can you post a pic of this tab in Versaworks. See the attached pic. Also, I would like to see a pic of the nozzle test print and the edges of the fill test in service mode. These pics will help me start narrowing down what the problem is. It may sound strange, but...

What media setting are you using in Versaworks, i.e., resolution, passes, etc.? If you could post a screen shot of the quality settings tab for the B&W job you are printing, that would be very helpful. The XR series printers seem to have issues printing large solid blocks of color and if you are...

If you changed the encoder sensor, be sure its position is so the encoder strip is centered in the gap in the sensor or it will eventually be damaged. I don't think the encoder sensor lights, but I could be wrong. A good test is to run the fill test in service mode. This prints each color at...

Please attach a nozzle test print. If you have absolutely nothing on the magenta/yellow head, as said by solventinkjet, then a blown fuse for sure. Besides the cables, it could be a shorted transistor on the head board or a bad head. Did anything happen before the channel loss, such as a head...

The physical head height in the printer should match the setting in the software. This may be why you're getting this message...

Are you doing a bleed-cut, i.e., cutting into the ink? If so, that is your issue with the curling edges. Read this thread for a thorough dison. https://signs101.com/threads/sticker-print-and-cut.158840/#post-1476747

All the way up and all the way down. It's a lever. It stops at the end of its travel.

Is this what you are asking about?

No, unfortunately I don't. Call me to discuss your issues, we may be able to fix it through phone support.

The lever on the left side of the print head carriage. Up for high, down for low. You will have to move it during head alignments.

You should have all the steps. See the attached 2 pdf's.