Hello, everyone! I'm aware that the CTK-1000 (1993 or so) manual is hard to find online, so I'm sharing a PDF copy here for those who didn't have it and may find it useful.  I still don't have the keyboard, sadly, but I was able to get this digital copy through someone who has it. I reckon that some of its features aren't super clear, so I'm sure that having the manual helps. Enjoy! https://mega.nz/#!rpwWjSza!1TKyDG-ctUmj3SP0-WFoLl0IKqJDZViytiE352iXHcU