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During the installation sending adjust must be done five times. Each time calculates the flow better.

Which channel shows the problem? Does it happen on all substrates? Does it happen on the paper? How old is the machine? When you did the 'sending adjust' for the last time? Is the negative pressure in the ink system correct?

It's clear that you have no idea about the Arizona flatbeds. These machines use so-called 'coolant' to heat up the heads and keep them in proper temperature. UV lamps are cooled with the fans.

Did you replace any heads recently? When last calibrations were done? Which calibrations? If the printer is 6 years old, heads may be weaker than before, so calibrations may be required. 550 also have one calibration, which is a pain in the a** - density. Is the banding related to any...

If possible, check the log - if there are connection errors between mainboard and carriage, it may suggest damaged Firewire cable. Look at the igus chain and check the ink ribbon and coolant tubings, they wear out in time. Depending on the model ink pumps may wear out too (look under the pumps...

Do you mean 1600? It's made by Mimaki in Japan. The bigger one - 3200R - it's made in China indeed. And it's not as good as 1600.

Absolutely NOT!!! Fuji Acuity (all flatbeds) are made by Oce in Canada. Don't spread fake news, please.

All pictures show just one alignment - head alignment gantry direction. Seems that you have K3 not in line with K2 (which is a reference head for mechanical adjustment). You need to adjust each colour's first head to the K2 then each second head from each colour to the first one (except black...

When the head popped out, shims could fall off, so after pushing back it may not be in the same position. Regardless of this (I don't know if you have your printer shimmed or not), you need to check the software calibrations, as the physical movement of the head always affects it. Scanner (not...

Do you have any error messages? Anyway, ask Oce for visit, do not purchase the board. If they replace it and the machine will work, you have the solution. If replacement won't remove the problem, you won't buy the board...

Any more technical information about such options?

Having knowledge about the part itself is not the same as having the maintenance/service procedures (and I'm pretty sure that DP cannot circulate excerpts of the service manuals - they are available for trained service engineers, at least for Arizona/Acuity machines). But I'll give you the...

365 was "current" a few years ago. Then were 4xxx models and since at least two years series 2x/3x is available. And UV lamps in 365 are different than in older 350, it's not possible to swap parts from one model to another. A lot of other parts are similar, that's right.

How could Digiprint Supplies (spare parts seller) provide you with the information about the head replacement? They sell parts to many different machines, do you think they have engineer manuals to all of them? No, they just have parts. It's up to you to replace the part.

I would answer "Dimatix Spectra". Industrial heads, when properly treated, will work for years.

Are you a service engineer? If not, the user manual is for you.

Could you make a photo and publish it anywhere?

Rubber bumpers should be between at the top of the gantry, under the carriage, near the Z-axis motor screws. If you want to lower the carriage manually, remove the carriage cover and manually rotate the screw in each Z-axis motor. No more than half of the turn at each side, than half on the...

Do you have flush in pouches (like inks)? Or in the external container? If it's the container, you will need flushing kits, which should be connected to the machine instead of ink pouches. You have to secure the carriage to the gantry (you should have the special plate to do this). Gantry should...

Acuity 2545 still has a support from Fuji, so they should provide all parts. Digiprint Supplies also have a lot of them. But be aware, that now it's the oldest model still supported, so it will be probably the first one without official support.