Need Help SP-540V lines on prints

Run the heater as normal. Do a medium clean and an "enviro match" and try again.

 

I have the same issue on same colour Roland Soljet pro ii SC540

 

Your nozzles are not firing correctly, yes all nozzles are firing. However if you look at the test print you can see some darker lines/nozzles in the K, C, and M. The darker lines are caused by partial clogging in the nozzle, and and instead of firing straight down it firing left or right thus causing the dark line. This deflection is causing the slight banding or over spray effect on the text that shows model number and serial number. You can try new captops and dampers, but I have little faith that will cure the deflections. I do have faith that new printheads would solve the deflection.

Just my .02

 

Like GTS said, yoiu need to replace the M/Y head. Magenta nozzles are the worst here and that's what's causing your magenta banding. That's an obvious issue here. There may be other issues, but till that is corrected, you can't reliably do any other troubleshooting.

Good Luck