Clean the keys and chassis to prevent dust from entering the key contacts.
Visualizations of signal paths (audio and MIDI) across the internal boards. roland juno di service manual work
: Requires a loopback cable connected from MIDI OUT to MIDI IN to verify that the communication ICs are sending and receiving data perfectly. Clean the keys and chassis to prevent dust
: A high-level view of signal paths between the CPU, Wave Generator, and Output stages. and Output stages.