Since official Roland replacement parts weren't immediately available, the tech used parts from old PC ribbon cables to reconstruct the connection—a trick often shared in community forums like the Roland Clan Forums The Keybed Surgery:
Example C — Non‑responsive keys/buttons roland juno di service manual work
typically revolve around physical interface issues and software stability: internal work is required.
If the issue is physical, such as "dead" keys or jumping values, internal work is required. roland juno di service manual work