Upload & Sell: Off
I have the exact same issues!
This is not the first time but probably the 3rd time in about 3 months.
I think I unfortunately found out what the issue is now.
The ink cartridges are getting pressurized, but the photo balk is leaking. As such the drop counter in the cartridge chip thinks there is still ink while it is empty.
The logical remedy I did is go through the cleaning stages, many many times, the result is that all the other ink gets sucked into the waste container. The Photo black was already empty so they all just get more and more empty until I desperately started to replace one oat a time the cartridges. Starting with photo black, so you very fast think you fixed it.
Now after some prints again smear appeared, logic as the print head leaks which is the real root cause of the issue.
I must have spend 500 to 600 Euro's in ink and waste containers + parer to come to this conclusion today.
I will just purchase a new PR)3880, so I have all new ink cartridges and a new print head that together is about the investment cost. What a shame that I pumped so much ink to waste…
Hope this conclusion is handy for someone else who comes across this first time.