[sdiy] Akai AX80 weird PWM behaviour on Voice 8 when Saw wave enabled

[Tom Wiltshire]

On 12 Jul 2012, at 05:09, james meagher wrote:

> I've also discovered why I encountered some unusual readings on Voice 4 . . . it appears DCO 2 is not making a peep on Voice 4. I believe the culprit to be IC401, C409 . . . or maybe T401 or C40? (can't read it on the schematic I have). 
> 
> Bob, can you tell on your copy of the schematic what the cap is just after the DCO-2 signal from the Voice PCB enters the blown up section specifically detailing Voice 1? It looks to me like it might be C106? It's proceeded by 0.0022.

It's weird, I can't find all of the caps on the voice PC on the parts list. C105 is there, but the next one listed is C122. Am I misunderstanding their parts list somehow?

Still, 0.0022 is clear enough. 0.0022uF is 2.2nF.

HTH,
Tom