Synthi A circuit boards


Location of the functions :
Board A - Power stabilisation, Output amplifiers, Reverb amplifier
Board B - Envelope shaper, Filter, Ring modulator, Input amplifiers
Board C - Noise generator, Oscillators 1-2-3, Meter amplifier
Component layout Copper side photo Component side photo   thanks to Pin
A    B    C A    B    C A    B    C
The corrected version of  the Quick Setup Procedure for VCS3 - Synthi A  from the Graham Hinton document.

With indication of 'PR..' trimpots :   board A : red    board B : blue    board C : green