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Mutoh does not sell ink chip cards separately.

The printhead has 8 ink channels. And, you can see 8 ink pipes which comes to dampers. But only 4 dampers installed. So, every damper has two independent ink channels. The printhead should not touch the wiper. Try to replace it. But use original one. Bacause some substitutes can have bigger size...

What is your original ink? I mean ink series. Most cases it is not firmware problem.

Did you try to print from OEM driver?

Some antivirus software can cause this kind of problem. Try to disable if you have it.

I think is better to ask some technician. If you already install new board, he can help you. I think with remote connection it is possible.

Yes, latest versions can be used by registered persons only.

Ink dust can be caused by too high head height. But not duplicating of image.

No. It is not working this way. You should to use service software and board replace procedure what included.

Double printing maybe because of dirty encoder ruler.

It maybe you damaged black inlet of the manifold while put damper. And, the air leaking there.

Try to update firmware up to latest version. It is 1.11 I think. New inks compatibility has here.

Explain more about new ink. What ink type? What is printer’s firmware? I remember old ink labeled as LUH, new ink is UH21. Maybe, you just need to upgrade printer’s firmware for make it possible to install new ink type.

Try to look around black radiators.

Did you check printhead fuses on the mainboard? You can not use mainboard from VJ1324 on VJ1624 because it impossible to reprogram it. It will be bainboard for VJ1324 only forever.

The printer has 4 ink lines - one for each color. Every lines has a splitter before dampers. So, for check you have to close second damper and pull from first. And opposite. I think you have a leakage in damper connection. Check a rubber ring under the nut. Maybe cut end of pipe a little.

Are you sure it is Mutoh OEM part? Not third party? If yes, it if fatal faulty. I never heard about so short lifetime for Mutoh parts.

You have to replace mainboard. And update firmware of mainboard or heater control board for same release. Or replace heater board too. Or Change parameter values in your OCE without any board replacement.

Disassemble the maintenance station and replace double tube inside the perilstatic pump. And check if all teeth on small gear. Or replace maintenance station complete.

It looks like not good head cables connection. Always jetting mozzles or channel missiing means some address pin of cable not connected. Try to reconnect the cables. Also, it can be ink leaking inside the printhead and short cirquit inside the printhead.