Finding a bad voice on Prophet 600

Service Data
This page details finding a bad voice(s) on a Prophet 600.
It is posted for informational purposes only, and is in no way to be used as a replacement for the service manual.

Finding the Bad Voice

1. The Prophet 600 after a TUNE command plays in order voices 1 through 6.

2. Find a patch that uses both banks of OSCs.

3. Adjust the MIXER to OSC A only. Hit TUNE and trigger OSC A, voices 1 through 6. Note which voices are out (if any).

4. Adjust the MIXER to OSC B only. Hit TUNE and trigger OSC B, voices 1 through 6. Note which voices are only (if any).