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That is definitely an electrical issue. Did you change the cable with the new head? If not, it may be damaged or have ink.corrosion on it. That pattern is an electrical short for sure. Could also be main board damage but it's almost always the cable or print head having an issue.

As FatCat said, make sure nothing is dragging on the media from the carriage. Also, give your encoder strip a cleaning as that can also cause the heads to fire where they shouldn't. The other thing I would check is the wiper. Make sure it's making good contact with the head. If not, ink gets...

I have the fuses and fuse holders available on my site here. The holder makes it easier to change in the future if needed.

A cleaning cycle should pull air out of the ink system. Sometimes it could take 2 cycles but in a working system it should pull it right out. If the bubble stays in the ink line after cleanings it usually means the air is getting in somewhere. Usually it's the connection between the ink line and...

The black is deflecting all over the place which will cause quality issues for sure. You are going to want to make sure your cap top is nice and clean and make sure the tubes aren't clogged. Usually I will disconnect the cap top form the pump, hook a syringe to the pump tube and flush solution...

Post a picture of the streaks. It will be easier to tell what's going on. Also, try printing with each head by itself. It's an option in the RIP. That way you can figure out which head might be causing the issue.

What does your nozzle check look like? Looks like you are missing nozzles.

Unplug the machine and let it sit for about half an hour. If you have an older 1204 that has the removable memory on the main board, remove it and air dust the terminal. Reinstall the memory and plug back in then power on and see if that does the trick. If not, you probably have a fried main...

I have a used one from a 1604. 303-733-6671

I can get them from Mutoh but only as a set of 8 and it's around $133 no joke. You can try using 2mm ink line but I can't guarantee that will work long term. I have done it in a pinch as a temporary fix and it worked.

I think the decision to lock people out of service mode is going to come back to haunt them. It's an obvious ploy to monopolize the service calls. No independent techs, no DIY fixes, only Roland. Why would anyone buy a machine they can't fix?

The RJ900 series is a water based machine. While you can find some very expensive vinyl with a special coating on it that will work, it's not really made for vinyl printing.

I had a chance to check out mine. It's in the Cutting Menu>Setup Sub Menu>Overcut.

I believe that is a setting on the printer itself. Check in the cut menu for Overcut. You set the length you want it to overcut and then the machine will take care of it.

It's in the "Composition" tab. I can't remember off the top of my head but you basically can reverse the composition and it will change the order of the print and cut.

The wiper is soft enough that it doesn't damage the head. You just don't want to touch it with something hard which could damage the nozzles or something that might push debris up into the nozzles so it's a good idea to avoid it in general. As far as ink dripping from the head, it could be...

I would say it need to be slightly more up. The wiper should bend backwards slightly as it drags across.

Usually when nozzles move around like that it's an ink flow issue. If it's happening in all colors, usually you want to change the dampers first. If it's only happening in the left magenta, I see that all the time in these CJV30 models as they get older. Usually you need to change the cap slider...

Normally I would agree but the Mutoh VJ1624 printers don't support DHCP. Maybe the new setup doesn't have a static IP reserved in the router and the old one did?

I usually flag my emails on the first read through and then don't unflag them until I have finished the task/answer the question. Even that doesn't work 100% and I find unfinished work by Friday!