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I agree with above but also in my experience it tends to be the head cables or the head itself and more rarely the trailing cables and boards.

Make sure you have the latest firmware. Gen 5 heads had a change in the electronics at some point and if the firmware isn't updated, it freaks out.

Make sure you clean the head mounting area first. Ink tends to build up and sort of glues the head down so it doesn't move easily. Usually that's the case.

The above info is pretty standard. The only thing I might add is, most people don't change dampers until they start having issues. If you replace them once per year along with the rest you don't get any surprise failures. It's not completely necessary but can be useful. As far as cleaning...

I'd say either the main board or power supply got fried and the fact that it turns on at all probably means the main board. If you can find someone to fix the board that's an option but you probably just need to throw one or both of those boards at it and it should get back up and running.

44 pass is very high. I'd try to find a profile that is closer to 24 pass or lower if you can get away with it. Also, that profile is also set to standard speed. You should be able to go into the RIP and change it to high speed which will make the motor move faster but you'll have to decide if...

It's probably a bad damper or other ink flow issue. Is there any air in the ink lines?

I've installed countless Mimaki machines in the last ~10 years and they always have the install kit. It comes in the main box for the printer. I'd be pretty surprised to not see it in the box. Put your dealer to work and get what you need but don't be too hard on them as they don't have a ton of...

Anytime I run into print cut issues on a Roland I run the encoder setup and calibration, then run the environmental match.

Since they sat for some time, I would pop a new cap top in, flush the pump tubes with a syringe and cleaning solution to make sure they aren't clogged, clean the surface of the head where the cap top meets up (avoid the nozzle area), and then run a 1-2 hour nozzle wash. This will start you out...

My first guess is you're connected via a router which is setup with DHCP and it's giving the printer's IP address to another device which causes a conflict. If you aren't connected through a router, I would try a new cable first, then try printing from another computer to see if the problem...

What issues are you having?

If you are still getting air pressure errors, that's a sign they are out of range and/or there is a leak somewhere preventing the system from pressurizing correctly. The machine uses negative pressure to pull ink from the cartridges to the sub tank and then switches to positive when printing. If...

I would see about getting a new purge line. If you can't see through it, it's probably clogged. As far as adjusting the pressure, it's in the service menu under the Test sub menu. The machine will beep slowly if it's too low and fast if it's too high. No beeping is what you're trying to achieve...

Sounds like maybe an ink flow issue. I'd probably start by adjusting the positive and negative pressure to make sure it's within range. Also, do you see air coming out during the air purge or is it solid ink?

How's the nozzle check look?

Error 522 is a media width sensor error. I'd bet the head strike knocked it out of place. Make sure it's sitting in it's spot properly and clean the surface with alcohol. PR errors are similar. There is a sensor in the back of the index head that reads the position of the pinch rollers. If it...

HP Designjet Z6 I'm pretty sure this model uses ink that does not have good outdoor durability. I'd stick with Solvent, Latex or UV based printers if you want to do outdoor stuff.

Epson made different versions of the DX5 head that would only work in certain machines. Usually when you put the wrong head in a machine it would print a similar pattern to your test print. I don't think they ever did it with the DX4s though so you issue is more likely the encoder.

Looks like an encoder issue. I would clean the encoder along with the sensor. If that doesn't do the trick, replace them. I've seen that pattern on a locked DX5 head before but your machine uses a DX4 heads and as far as I know they never made locked DX4s.