At another client, the printer refused to recognize any cartridge - including genuine Epson. Removing the fragment solved the problem. This was shorting out the connection and causing the printer to fail to recognize any cartridge in that slot. At one customer (fortunately a local one) I used a flashlight and spotted a tiny fragment of a cartridge chip stuck to the pins inside the printer. Each chip is matched to its color and putting the wrong cartridge in the wrong slot will cause the printer to report an unrecognized cartridge.Īnother cause is a short within the printer itself. It usually means the wrong cartridge was inserted - such as a yellow in the blue slot. The chips they contain today are identical to the ones manufactured years ago. Earlier epson printers and their matching cartridges have not been changed. I say this because so far, in the very few times this happened, the cartridges have always worked in another printer. If more than one with any of the earlier cartridges (T048, T060, T069, T078, T079, T098), the problem is almost certainly with the printer. If this happens with one cartridge, it might be a bad chip.
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