I downloaded the manual for 120 CR as it might be similar enough to figure out the 110 CR.
I also downloaded Casio Error Codes. Hope there is something helpful there.
Just want to help a neighbor who has an old Casio till with an error msg.
If anyone needs a Casio 110CR manual, there is one on the net. I sent a customer to the site last week since Casio have no manuals any more. Copy and paste this into your browser-