1. Set [RESONANCE] and [FREQUENCY] to maximum
2. Set P1 to its mid-position
3. Monitor the wiper of P4 and adjust it for 0.0V
4. Set P2 to its mid-position
5. Monitor [OUT] which should be oscillating. If not, back off the [FREQUENCY] control slowly until it does
6. Set [RESONANCE] to '8'
7. Adjust P2 (normally this will be a clockwise rotation) until the oscillations stop
8. Set [RESONANCE] to maximum, the oscillations should restart
9. Repeat steps (6) to (8) if needed
10. Set [FREQUENCY] to its mid-position
11. Adjust P4 for a frequency of approximately 200Hz