https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/TR8520-Error-code-1660/m-p/331199#M19556 I am having the same error with Canon and non-canon cartridges. Wed, 13 Jan 2021 23:18:38 GMT MWhite9987 2021-01-13T23:18:38Z https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/TR8520-Error-code-1660/m-p/284482#M19555 <P>It won't recognize a non-canon print cartridge. I use these on other Canon printers at the office but it won't work on my relatively new TR8520. Is there any way around it?</P> Sun, 20 Oct 2019 18:41:19 GMT https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/TR8520-Error-code-1660/m-p/284482#M19555 sammark 2019-10-20T18:41:19Z https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/TR8520-Error-code-1660/m-p/331199#M19556 I am having the same error with Canon and non-canon cartridges. Wed, 13 Jan 2021 23:18:38 GMT https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/TR8520-Error-code-1660/m-p/331199#M19556 MWhite9987 2021-01-13T23:18:38Z