Circuit Overview:
An early 8 note polyphony digital synthesizer that is a crude additive synth! Mostly inclined towards organ sounds. A few interesting preset tones which can be arranged for harmonic content! eg. the two organ tones are different sounding with the same footages. And then there are 10 ADSR envelope presets, and 10 'modulation' effects which range from EQ presets and sustain, to wah. Some useful organ sounds if run through a good leslie in my opinion but as one might expect a fairly stale sounding machine for the most part. But sort of a collectable piece since it really is the first affordable synth of this general type.
Service Tips:
Normally pretty reliable machines I'd guess except I had the built in speaker surround die on mine. There was enough left to just overlay goop automotive adhesive since I really didn't care about affecting the low end of it that much :-). I just coated the whole surround with one contiguous layer of the stuff and it remains flexible enough to give some movement of course.
Knobs:
Good luck finding them for this thing in the original form.
Parts:
American Perfit has parts they say for Casio.
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