I had this exact same dilemma last night -
but careful examination will show you that only 4 of the pins on the
old opto component is connected to anything.
I got my new opto from
http://www.rswww.comLook at part
http://rswww.com/cgi-bin/bv/rswww/searchBrowseAction.do?N=0&Ntk=I18NRSStockNumber&Ntt=2508981626&Nty=1&D=2508981626&callingPage=/order/OrderHistoryView.jsp&BV_SessionID=@@@@0781451492.1161086007@@@@&BV_EngineID=cccladdjdljgfkfcefeceefdffhdffo.0&cacheID=uknetscape&Nr=avl:uk(RS Stock no. 2508981626, check out the Data Sheet document)
You'll see the new opto has a corner cut out to indicate where "pin 1"
is.
The old opto has a wee dot at the upper left to indicate its "pin1"
Korg's surviving PS6 schematics go horribly fuzzy at this point, but
if you shine a light through the board you'll see which pin trace
leads to R93 (pin 2, the +ve end of the LED), whilst pin1 goes to ground.
--- In PolySix@yahoogroups.com, "bildfantomen" <monke@...> wrote:
>
> Please explain to me how the Opto thingamajig is supposed to be
> connected, all it says in the Files section is what resistor to
> change. It doesn't explain to a moron how the vtl5c3 is connected,
> like I said before it has 4 connectors, and the old part has 5 (or 6,
> i'm confused)
> What connector goes where?
> I don't know much about this but I know that I want the F∗∗∗er to work
> properly.
>
> And I would like to apologize for my temper, and aska again, does any
> one have any idea why my polysix arpeggiator slows down when i fiddle
> with the adsr and EG settings???
>
> There I said it, sorry but it appears I'm a moron...
>