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Not sure how much, this is done through the dealers. This allows mainly waterbased ink Valuejet printers to run 3rd party inks for printing on film positive, transfer paper or direct to fabric.

This is how we do it in Australia, not sure if the same applies to the rest of the world. The .ulk file is part of the .mpi file which is embedded on the printer. The .mpi file can be extracted from the printer through the Mutoh Service Assistance (MSA) program. After extraction, the .mpi...

You need to install the modified ink parameter (.ulk file) to the printer to bypass the smart chips.

Check the flex cable that connects the control panel and the mainboard, make sure it is properly inserted on both ends.

That's what I suspect as well, hence my question about using solvent ink. Are your pumps OEM or 3rd party, are they for solvent printers?

Are you using solvent ink?

Possibly incomplete ink fill or worse, blown head fuse on mainboard.

I believe these are the headranks for the printheads on your printer.

Sorry, none available for this

Yes, there is a way. This is done by invoking a hidden menu during powerup by pressing a series of keys on the control panel and then entering a 4 digit code. Unfirtunately, it is hard to explain the process in writing as it requires timing, certain keys has to be pressed depending on what is...

I thought so!

Sometimes, later firmware may not read 3rd party ink smart cards

The new VJ-1324 and VJ-1624 are out! New wave effects produce better print quality at faster carriage speed, 460 cps vs 400 cps for the older Valuejet series.

The valve should open automatically when the ink sensor on the corresponding sub tank goes low. To check if the valves are working properly, enter Self Diagnosis Mode, then go Ex Control Menu, select Sensor Menu, then Valve Check. This test allows you to open and close each valve by selecting On...

When printing double sided banners, it is as good practice to cover the rear media sensor with a piece of white vinyl. The media sensor is an optical one so that when any area of dark print passes over it, the light that the sensor generates is absorbed by the dark print and is not reflected...

A printhead without the correct headrank will still print, however there is no guarantee that you will be getting the optimum print quality from it. The headrank sets tge voltage applied to the piezzoz to control the size and shape of the main dot and satellite dots. This can result in grainy...

Looks like the ink configuration on the mainboard is not set correctly. The new mainboard needs to have the same parameters and configured exactly as the old one.

"Mutoh tech support are really dumb" is a rude and incorrect assumption. Was this done over the phone? You probably did not give them a good description of what you have done on it, just like on a computer, there is a term "GIGO".

Just as I thought, that is weird, normally if the printer was switched off while in the headwash or longstore mode, it would go to the ink fill mode when switched on. Yours is different, it still wanted to finish the headwash.

I'm not sure why or how it happened but it seems your printer is in headwash or longstore mode. This is probably the reason why it reads the cleaning cartridges but not the ink cartridges, really weird.