Trill Trim Adjustment

1. Set RATE to 3, SOURCE selector to 1 (Square Wave), ROUTE to OSCILLATOR, OSCILLATOR to DRONE, BYPASS to ON.
2. With MOD AMOUNT wheel fully down, note the pitch.
3. Roll wheel fully forward. If the lower note moves up or down, adjust the TRILLTRIM trimpot so that the pitch remains unchanged.

Source: Micromoog — 4cbaff59_Moog_MicroMoog_Manual (manual)