It sounds like you want to modify the schematic you have. The schematic shows the microphone already connected. Are you asking about how to replace the mic with a jack so you can plug in an external microphone? If so, then it depends on the mocrophone. Some need two connections and some need three. Which kind do you have?
It sounds like you want to modify the schematic you have. The schematic shows the microphone already connected. Are you asking about how to replace the mic with a jack so you can plug in an external microphone? If so, then it depends on the mocrophone. Some need two connections and some need three. Which kind do you have?