R3000 air in tubing?

VC77

Newbie to Printing
Joined
Feb 19, 2021
Messages
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Printer Model
Epson R3000
Hi there,
I am using third party refillable cartridges. Black ran out without me noticing for about fourteen postcards.
I refilled the cartridge but cant get the printer to get any black on the paper.
It doesn't seem to be the normal clog problem, I did several cleaning cycles.
Any hints how to proceed?
thx, vc77
 
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