Discussion about the Korg PolySix synthesizer

HI there!

I'm really you guys crossed my thread!
Thanks again to take time to help me!

To Jed and Andy, I will undo the R09 fix tomorrow,  I'd like to start as
well the Adjustment Procedure where there is some parts I don't
understand at the very beginning of the procedure I should verify the
power supply with the test point on the "J" ??? What are the J 's, are
they some diodes? or resistances? And then ON the Reset Procedure there
is something with a 52Ko resistance but I can't get to understand where
i should put the legs on ?
and for the MG "Calibration" I really need to use an Oscilloscope but I
found there was some software equivalent.  What do you think about them?
I'll still look on ebay...

I still did some tests with the buttons and knobs.
Here the result:

OUTPUT SECTION

Volume : Ok
Output SW : Ok

TUNE SECTION

Tune Knb : not sure

VCO SECTION

Octave : Ok
Waveform selection : Ok
PW\PWM : hard to say
PWM Speed : hard to say too
Sub Osc SW : Ok

VCF SECTION

Cutoff : No
Resonance : No
EG Intensity : No
Keyboard Track : No

VCA SECTION

VCA Mode : Ok
Attenuation : Ok

ARPEGGIATOR SECTION

Arpeggiator SW on/off  :  Ok
Arpeggiator Speed  :  Ok
Range SW  :  Ok
Mode SW  :  Ok
Latch SW  :  Ok

MG SECTION

Freq Diode : Yes but not sync with the Freq Knb
Freq : No
Delay : No
Level : No
MG Mode : Ok

EG SECTION

Attack : No
Decay : No
Sustain : No
Release : No

EFFECTS SECTION

(Once again it's hard to say 'cause I hear the notes played only on the
"top" of the modulation so it's hard to define phaser ensemble or
chorus)

FX Mode : Seems Ok
Speed\Intensity : Hard to say

BEND SECTION

Bend Intensity : Ok

WHEELS

Bend Wheel : Ok
MG Wheel : Ok

KEY ASSIGN MODE SECTION

Hold : Ok
Chord Memory : Ok
Unison : Ok
Poly : Ok

PROGRAMMER SECTION

All the numbers work when pressed but can't hear the difference


By the way thanks a lot for the Manual Service I found one on a website
but yours is best!


Looking forward for your answers


Cheers!



Vincent


PS : ANDY I live in Paris where are you hiding?




--- In PolySix@yahoogroups.com, Jed Jorgensen <jed.jorgensen@...> wrote:
>
> Man, I'm way too impatient this morning. Andy just sent me a complete
copy
> of the manual. That is now up on my website. I'm also putting a copy
in the
> file section here.
>
> J
>
> On Fri, May 14, 2010 at 9:31 AM, Jed Jorgensen jed.jorgensen@...wrote:
>
> > Vincent,
> >
> > I've put a copy of the service manual on my webpage here:
> >
http://sites.google.com/site/jedjorgensen/klm367a/images/pcb-bugs-errors\
/manuals<https://sites.google.com/site/jedjorgensen/klm367a/images/pcb-b\
ugs-errors/manuals>
> >
> >
> >
<https://sites.google.com/site/jedjorgensen/klm367a/images/pcb-bugs-erro\
rs/manuals>This
> > is not a complete copy of the manual, but it has the calibration
procedure
> > that you need to follow. The calibration procedure for the 367 board
is on
> > pages 10 and 11.
> >
> > Jed
> >
> >
> > On Fri, May 14, 2010 at 8:45 AM, Jed Jorgensen
jed.jorgensen@...wrote:
> >
> >> Hi Vincent,
> >>
> >> Yes, put R9 back and re-jumper the trace you cut. That modification
isn't
> >> recommended unless you have LFO noise present that can't be fixed
by another
> >> method. I've updated my website to make that clear.
> >>
> >> The calibration procedure on the VR's is necessary to make the
board and
> >> the P6 function correctly. You can begin parts of the procedure
without an
> >> oscilloscope, but as Andy noted you have to have one to do the job
> >> correctly.
> >>
> >> Do you have a copy of the service manual? I'll put one on my
website soon,
> >> but I'm pretty sure it is in the files section at the yahoo groups
page.
> >>
> >> Jed
> >>
> >> On Fri, May 14, 2010 at 4:22 AM, kluberrrrr KLBR@... wrote:
> >>
> >>>
> >>>
> >>> Hi Jed,
> >>>
> >>> first I'd like to thank you for what you did for the P6 itself and
of
> >>> course its users! Even if my P6 doesn't work yet I remain positive
:)
> >>> I also appreciate you fast answer! thanks!
> >>>
> >>> I fixed the R52 and R98 issues. I was hesitating by doing the last
one (
> >>> lift the resistance 9 and cut the trace) I did it : unsoldering
one leg of
> >>> the R9 cut the trace and put a jumper between the CN 06 pin 02 and
the
> >>> unsoldered leg of the R09.
> >>>
> >>> No more sound at all !Well, I can hear on the background the
modulation
> >>> if i put the gain very high of the audio amp. The knobs on the MG
panel
> >>> remain unusable
> >>>
> >>> Before to did the fix, I was able to hear the notes played through
the
> >>> modulation generator which went in and out very slowly in any MG
mod ( vca
> >>> vcf )with a very normal volume. I'm sure that the sound is
modulate because
> >>> I can follow the MG led with the fade of the sound
> >>>
> >>> I don't have done the VR adjustments yet because I don't have any
access
> >>> to an oscilloscope. But I'm not sure it will change a lot. My
first target
> >>> is to have the sound back without the modulation on it .
> >>>
> >>> Should I put the R09 back and remove the jumper? and try something
else?
> >>> Or should I try to do the Don B. fix on the 368 board?
> >>>
> >>> Could the problem on my P6 come from another part?
> >>>
> >>> Cheers!
> >>>
> >>> Vincent
> >>>
> >>> --- In PolySix@yahoogroups.com <PolySix%40yahoogroups.com>, Jed
> >>> Jorgensen jed.jorgensen@ wrote:
> >>> >
> >>> > Hi Vincent,
> >>> >
> >>> > Did you fix the two PCB errors noted here (#1 & #3):
> >>> >
> >>>
https://sites.google.com/site/jedjorgensen/klm367a/images/pcb-bugs-error\
s
> >>> >
> >>> > <
> >>>
https://sites.google.com/site/jedjorgensen/klm367a/images/pcb-bugs-error\
s
> >>> >Also,
> >>> > did you calibrate the board following the build as per the
service
> >>> manual?
> >>> >
> >>> > Jed
> >>> >
> >>> > On Thu, May 13, 2010 at 3:07 PM, kluberrrrr KLBR@ wrote:
> >>> >
> >>> > >
> >>> > >
> >>> > > Hi everybody,
> >>> > >
> >>> > > I'm quite desperate here, so I hope someone could help me a
bit
> >>> especially
> >>> > > because I'm not very good in English and I'm not an electronic
guy!
> >>> > > A couple of years ago I found a polysix which had the famous
leak
> >>> battery
> >>> > > problem, so impossible to play on it.
> >>> > >
> >>> > > I tried to repair the KLM 367 but with no success.
> >>> > > Then i discovered the Jed's project
> >>> > >
> >>> > > Today I've just finished to solder all the parts on the
KLM-367A
> >>> clone
> >>> > > board.
> >>> > > I put the board back on my P6. Then I turned it on.
> >>> > >
> >>> > > First, the programmer panel seems to work fine, Led button
repond
> >>> when I
> >>> > > push them
> >>> > >
> >>> > > BUT there is no sound at all. Just some attack sound, some
'blops'.
> >>> > >
> >>> > > When I hold a key down, I can hear the note coming very slowly
and
> >>> fade
> >>> > > out. Just like the LEd of the MG panel fading In and Out very
slowly.
> >>> > >
> >>> > > The Mg frequency, delay and level's knobs don't affect the
> >>> modulation. Even
> >>> > > if the modulation level is at 0, the sound is fully modulated
> >>> > >
> >>> > > So I guess it's the MG section which seems to not work
properly. It
> >>> looks
> >>> > > like it is stuck on a very slow frequency and there is no way
to cut
> >>> the
> >>> > > modulation.
> >>> > >
> >>> > >
> >>> > > Also cutoff, resonance, eg int, keyboard track knobs don't
seem to
> >>> change
> >>> > > the sound.
> >>> > >
> >>> > > When I built the new Jed's PCB, I used from the old board the
mask
> >>> rom IC,
> >>> > > the TC5514APL-3 IC, the two LM13600 ICs and the 2SA798
> >>> > >
> >>> > > What do you think? Is it possible that one of the Ic is dead?
Or does
> >>> it
> >>> > > look like the problem is deeper?
> >>> > >
> >>> > > Please excuse my poor english !
> >>> > >
> >>> > > Cheers!
> >>> > >
> >>> > > Vincent
> >>> > >
> >>> > >
> >>> > >
> >>> >
> >>> >
> >>> > [Non-text portions of this message have been removed]
> >>> >
> >>>
> >>>
> >>>
> >>
> >>
> >
>
>
> [Non-text portions of this message have been removed]
>



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