CEM3340

[Caloroso, Michael E]

> Hi all,
> 
> Does anyone know if the 3340 has any known failure modes? I have two
> 'dead' ones from my systems. One has no temp compensation and has lost
> its triangle output at high frequencies. The other is randomly playing
> higher notes, but stays roughly tracking the 1V/oct. It is the CEMs; all
> other circuitry has been cleared of misbehaviour.
> 
According to my Memorymoog service manual (March 1983 edition), there were a run of CEM3340s with datecode 8226 which will not hold the oscillators in tune.  Remedy is to replace the 3340 with another datecode and re-calibrate.  That's all the details it provides.

MC
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Opinions (and mistakes) expressed herein are my own and not those of my employer.