45 | Oscillator Tuning Procedure
OSC 2 RANGE AND SCALE BOARD 1
1. Set the OSC 2 VOLUME switch to the ON position.
2. Depress the HIGHEST “A” KEY on the keyboard, and adjust the OSC 2 RANGE
trimpot for zero beats to OSC 1.
3. Depress the LOWEST “A” KEY on the keyboard, and adjust the OSC 2 SCALE
trimpot for zero beats to OSC 1.
4. Repeat steps 2 and 3 above until there are zero beats from OSC 2 to OSC 1.
5. Set the OSC 2 audio switch to the OFF position.
OSC 3 RANGE AND SCALE BOARD 1
1. Set the OSC 3 VOLUME switch to the ON position.
2. Depress and hold the HIGHEST “A” KEY on the keyboard, and adjust the
OSC 3 RANGE trimpot for zero beats to OSC 1.
3. Depress and hold the LOWEST “A” KEY on the keyboard, and adjust the OSC 3
SCALE trimpot for zero beats to OSC 1.
4. Repeat steps 2 and 3 above until there are zero beats from OSC 3 to OSC 1.
5. Set the OSC 3 VOLUME switch to the OFF position.
Oscillator Tuning Procedure