From Florian Anwander Sent Thu, Jun 7th 2018, 09:16
Hello There is a thread in the german forum musikerboard.de about a restoration / modification of a CX-3 (*), which contains pictures of the keyboard contacts: https://www.musiker-board.de/threads/cx3-wird-hx3-bilder-einer-verjuengungskur.588577/ https://www.musiker-board.de/attachments/cx3-17-jpg.391128/ https://www.musiker-board.de/attachments/cx3-18-jpg.391131/ They keyboard looks similar to the Roland Juno 6 / Juno 60 keyboard. Cleaning those is done the best with a fibre glass pencil. Florian (*)the guy who is posting this thread is from Hamburg, so it is not the one you are looking for.