Can a key that broke off be replaced on a Casio CTK-593?

Hi

Here are some links to suppliers that may be able to help with the replacement part(s).

supplier 1, supplier 2

If the broken key is a white key then it may be difficult to find a replacement unless the second supplier listed has them as the first supplier states that they’re a discontinued item and searching for the Casio part number (91036999497) gives no results for suppliers that have stock

I cannot find a service manual which would make replacing them easier, so you just may have to carefully open the keyboard and check how the keys are installed.