This printed circuit board (10 x 16 cm) contains the keyboard interface (left) and the LFO unit (right). The layout shown above is shown from the component side.

The keyboard interface is connected to the rest of the synthesizer via the contacs on the upper left margin. The two pins marked with "P1" have to be connected with two pins of the glissando potentiometer. The keyboard voltage (1V/octave) is fed in at the pin "KOV IN". The cable with gate pulses comin from the keyboard must be connected to the pin named "Gate Pulse". The keyboard output voltage coming from the keyboard interface stage is present at the pin "OUT". This pin must be connected with the KOW-In connectors of both VCOs.

If you want to know more about the wiring of the different units, please go to the page with the name "wiring".