Discussion about the Korg PolySix synthesizer

Hello all just seeing if anyone can help me with an issue.

I have completed one of my new group buy KLM-367. Now it is installed and I am attempting to calibrate the board. I have completed both the power supply calibration and Step (1) resetting. Now with step (2) the D/A adjustment I am running into a problem. I set SW1 to test then toggle the Tape SW and LEDs 1 and 5 turn on. rotating VR7 or VR6 does not change the state of the LEDs.

Any clues?

Also has anyone run across a mod in their polysix where on the 369 the trace between D1 and J2 has been cut and then a jumper wire was installed to another location? I have a loose jumper wire coming from D1 for the time being I have soldered to J2 until I figure out why and where it was rerouted to.

- Daniel

Hmmm.

This is going to sound dumb, but have you tried setting the test switch the
other direction?

I recall the dip switches seemed 'backwards' to me...



On Fri, Aug 20, 2010 at 2:55 PM, Daniel A <apophis93@yahoo.com> wrote:

>
>
> Hello all just seeing if anyone can help me with an issue.
>
> I have completed one of my new group buy KLM-367. Now it is installed and I
> am attempting to calibrate the board. I have completed both the power supply
> calibration and Step (1) resetting. Now with step (2) the D/A adjustment I
> am running into a problem. I set SW1 to test then toggle the Tape SW and
> LEDs 1 and 5 turn on. rotating VR7 or VR6 does not change the state of the
> LEDs.
>
> Any clues?
>
> Also has anyone run across a mod in their polysix where on the 369 the
> trace between D1 and J2 has been cut and then a jumper wire was installed to
> another location? I have a loose jumper wire coming from D1 for the time
> being I have soldered to J2 until I figure out why and where it was rerouted
> to.
>
> - Daniel
>
>  
>


[Non-text portions of this message have been removed]

Jed,

I did not want to continue bugging you at work ;)

With the switch in the original direction no change in state takes place (LEDS A and Manual stay the same when toggling the tape switch). When test switch is thrown the LEDS will shift from A and Manual to 1 and 5. either direction on VR6 or 7 in adjusting does not change the state.

- Daniel

--- In PolySix@yahoogroups.com, Jed Jorgensen <jed.jorgensen@...> wrote:

>
> Hmmm.
> 
> This is going to sound dumb, but have you tried setting the test switch the
> other direction?
> 
> I recall the dip switches seemed 'backwards' to me...
> 
> 
>

Yeah. I was being dumb.

;)

On Fri, Aug 20, 2010 at 3:13 PM, Daniel A <apophis93@yahoo.com> wrote:

>
>
> Jed,
>
> I did not want to continue bugging you at work ;)
>
> With the switch in the original direction no change in state takes place
> (LEDS A and Manual stay the same when toggling the tape switch). When test
> switch is thrown the LEDS will shift from A and Manual to 1 and 5. either
> direction on VR6 or 7 in adjusting does not change the state.
>
> - Daniel
>
>
> --- In PolySix@yahoogroups.com <PolySix%40yahoogroups.com>, Jed Jorgensen
> <jed.jorgensen@...> wrote:
> >
> > Hmmm.
> >
> > This is going to sound dumb, but have you tried setting the test switch
> the
> > other direction?
> >
> > I recall the dip switches seemed 'backwards' to me...
> >
> >
> >
>
>  
>


[Non-text portions of this message have been removed]