Discussion about the Korg PolySix synthesizer

You do not have an idea for my problem ?
The equivalent for IC9 is TL072 and IC1 is a CD4011 (CMOS NAND GATES)?

--- In PolySix@yahoogroups.com, del_poolp@... wrote:
>
> Hi,
> I have a P6 (old production) with KLM367A clone.
> P6 Boot correctly, but the keyboard do not work.
> The keyboard hardware work with another P6 (new production).
> 
> Question :
> KLM367A Clone board is compatible with P6 old production ?
> 
> On this photo (http://www.themeloon.net/wp-content/uploads/2012/03/IMG_20120310_111435.jpg) the IC1 and IC9 is physically poor (no text, and pin is black). How to test this IC ?
> 
> Thanks,
> Richard
> 
> PS : Sorry for my english, and i'm not a really electronics engineer just a handyman sunday ;)
>