If it takes a single coin then you just need to exchange the old physical coin mech with a new one. If it takes multiple types then you will need to update or replace the electronic mech.
It takes 3 different types of Coins.
If you look at the picture, you can see 4 very small "levers", on the new versions it's possible to set the levers to different states and then learn the validatorn new coins.
Is that not possible to do with this one?
Hope you understand my English

^^
Best Regards//
Tobias Karlsson