https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/Canon-MG7520/m-p/254493#M24761 <P>Error code:1660. I replaced my empty grey ink cartridge, but now it is not recognizing it.&nbsp;</P> Fri, 07 Sep 2018 21:13:10 GMT Krone1100 2018-09-07T21:13:10Z https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/Canon-MG7520/m-p/254493#M24761 <P>Error code:1660. I replaced my empty grey ink cartridge, but now it is not recognizing it.&nbsp;</P> Fri, 07 Sep 2018 21:13:10 GMT https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/Canon-MG7520/m-p/254493#M24761 Krone1100 2018-09-07T21:13:10Z