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Why not use the cut-off command?

The right to repair your own machine and warranty are two different things.

Looks like you had a crash(deflected nozzles on magenta an black in the same area). If manual cleaning of the nozzle plate doesn't improve your nozzle print, you may need to replace the head. Look at the service menu nozzle print, to see what the small dots look like.

Printing CMYK is possible with any firmware version. You just need to select double CMYK ink config. I'd save the actual parameters of the machine and do the update. If something doesn't work, I'd downgrade to the actual version and download the parameters. It's hard to say, if you particular...

On such a old geezer, there could be a pinhole in the tubing. (Roland suggests to replace it after 3000h printing time.)

This won't be possible with VW and this printer. What you need is a printer with LC/LM/LK. A VSi for example. If you want to finetune black generation and have (more important) dot size control, you need another full featured rip, that's probably more expensive, than a used VSi printer with...

The latest firmware is definitely compatible with Roland EcoMax2. No need to downgrade. 3rd party ink may be different.

I don't know, why it shouldn't be possible to switch back to Max2. The colors will definitely be off, with the wrong profiles.

Update to latest firmware.

It's almost always the SSR on the heater board. It's either constantly on, so the overtemp switch "regulates" the temp at 60-70 deg. Celsius. Or it is constantly off and stays cool.

Did you replace the damper? If a damper fill doesn't fix it, the damper needs replacement.

I don't think so. The Roland marks are generated by the printer.

What depht are you talking about? The smaller the drop size, the less distance between printheads and medium is possible. The drops are deflected by static or air draft and are shot at an angle because of the moving carriage. I don't know of a printer, that uses heads with very large drops nowadays.

Replace the printhead.

There is no way to reduce tension out of the box. But if you adjust the straightness of the takeup, it can help.(try to even out the distance from the print platen(pinch rollers actually, but they are hard to measure) to the takeup roll.)

What printer driver are you speaking of?

We have seen similar issues that finally had us to replace a machine...

This is a known issue since June. Should be resolved in the next FW. Otherwise you can clean all substrate presets in diag mode...

New drivers are available from Roland.

Could be the media presence sensor in back of the machine. I had such a strange loading behaviour once on a L570 and it finally was a dirty sensor. (You will need to remove both side covers and the back panel to access it.)