I just got a new Epson 9890 and purchased a set of the Cone 850ml cartridges and 700ml inks and started a lot of printing. Everything was going good till I installed the Cone inks. The LtK was the first to go out. I put the Cone LtK cartridge in and at first it was not recognized - No Cartridge, Install Ink Cartridge - , but then I remembered to charge it with the syringe, then it was good.
Then the LtLtK went out. I put the Cone ink cartridge in and the printer would not recognize it. And it also would not recognize the LtK. Same message - No Cartridge Install Ink Cartridge -. I recharged the Cone cartridges and reset the chips - same result.
There was still a little ink in the OME LtLtK cartridge so I put it back in. Then I reinstalled the Cone LtK and the printer recognized it. I made a print. I put another piece of paper in the printer and after the printer took the paper into position I get the same error message No Cartridge Install Ink Cartridge. If I reinstall the LtK I can make one print and then the described above process repeats - the Cone cartridge is not recognized, until I take it out and put it back in, and then it is not recognized after one print, or one nozzle check test print. The LtLtK continues to not be recognized.
I have tried pushing the Cone cartridges to the left as described in other post responses - no result.
I have not tried any of the other inks.