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You are right, my image of the damper is not the one for the ET-7750, the ink transfer pad is different. We didn't discuss how you replaced the inks yet. I do it a rather simple way - pulling the old ink through the tube at the side of the damper, the paper clip prevents the new ink once loaded...

I had the ET-7750 years ago and finally dumped it since I couldn't get it working again after converting back from pigment inks to dye inks - and some other tests......Anyway - I'll try to find the service manual I got at that time which should let me understand again what I did then, it must be...

o.k. - fine - you got it out. You disconnected the tube, did you clamp the tub to prevent the ink to run back ? You can pull the ink up when you reconnect the tube in any case. https://www.wic.support/download/

There is a latch at the backside - pretty much at the top, you can get there and release it slightly from the side with a small screwdriver, getting there between 2 adjacent dampers. Yours should look similar.

Air is visible at 2 places - there are bubbles visible in the tubes to the printhead - that's the easy part - or you need to look to the damper of that color - the little round ink reservoir in the middle of the damper should not be empty. I described above how to get to the dampers. And you...

I haven't tested the longevity of pigment inks to a great extend, I was focussing on dye inks over the last years. But one thing should be clear - you cannot assume a particular quality level just because it's Hahnemühle or the XXX-brand. Pigment inks will give you a good longevity overall -...

Oh well, dye black ink can fade as well depending of the actual exposure conditions, you would be better off with pigment inks in that case. The G570 photo printer uses GI-73 inks - in India as I see it. It could very well be true that Canon uses these numbers as well in your country.

Yes What is the currrent status - before you do anything ?

you are addressing one irritating problem - there are lots of different numbers for bottled megatank inks - all these bottles are mechanically coded so that you cannot insert the wrong color into the printer reservoirs, but these bottles - the top of it - are coded just for particular product...

I hope you didn't get air into the tubes, that could require some more effort. The WicReset utiliy should offer you an 'ink charge' command listed under the cleaning options, it does what the name says but wastes quite some ink which goes into the waste ink box. There are other ways to get it...

I don't have experience with such watercolour papers - inkjet or not. I only can recommend in this case to find a way to get or print testprints with pigment inks on your papers to see whether the improvement - which you expect - really would support the inkset conversion

You may try aquarell - watercolour inkjet papers before you convert the inkset. Some papers like this one https://www.amazon.de/PPD-Inkjet-Aquarell-Giclée-Papier-ppd-74-25/dp/B07BSHMTPX https://www.amazon.de/22-Cold-Aquarell-Art-Inkjet-25-Blatt/dp/B00Q759J0Y should be available in your...

I don't know this Arches HP paper, but you are right that pigment inks on uncoated papers deliver more color saturation than dye inks in lots of cases, but I recommend you to test that - on another printer which already runs on pigment inks. The improvement may be marginal - it all depends very...

Where are these track marks - on the front- or backside of the paper ? If it is on the frontside it might be an issue with the paper - slightly wavy so that the nozzle plate touches the paper ? You might check as well the driver settings - the extended settings on the maintenance tab, there...

Oh well - Adobe is creating a kind of their own color mgmt environment with this and that modification which they don't clearly communicate to Lightroom users - and even more to potential buyers of Lightroom. But this is not the only company which thinks they can do it better. When it comes to...

There seems to be a kind of offset for part of the image, your page count is not that high yet, but the problem could be an issue with the coding strip which a sensor is scanning to position the printhead. That is a gray plastic strip which passes through a sensor at the top rear of the...

What type of paper are you using ? Please print and post a nozzle check print .

I think general statements like X-Printers are better than Y-Printers are just useless - they don't refer to any particular models or applications, and that's not an issue of thermal vs. piezo printing

Easter is coming - and the Easteregg trees start sprouting

@lmylm , I think your questions are more than answered at this point - it's overall a complex relationship between the profiles, the rendering intent and the print program you are using like Lightroom or Qimage or else and the origin of your profiles like ArgyllCMS or ccStudio or Colormunki or...