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Thread

EG and VCF not working after battery leakage

EG and VCF not working after battery leakage

2014-05-27 by phil0065@yahoo.fr

Bonjour !

I am French and happy to join this group of Polysix owner. My old Polysix bought back in 1983 has been sleeping in the attic since 1990, until I have returned back now to my first love. Unfortunately I have discovered the battery leakage problem !


So I did the standard procedure (like many)

Spend a lot of time checking the lines on KLM-367 with plenty of leds on at start up.. 

Browse internet for hours (discover service manual, old crown, etc)…, change IC 30 & 31 … recheck continuity, still few leds on..

Recheck again, change all set of panel switches (vintage planet)..4 leds on... Bank B not working...

Check lines again, to get finally only leds A1 on start up. Great !


Unfortunately sound is not OK.


Tune seems OK, 6 voices are OK, voltages from power board are OK (15V, 5V -5V and -15V) all pots and switches seem to work except the 4x EG and 4x VCF pots which are not active!

I think at this stage it is useless to do the calibration procedure. Is there some indications, checking to start with to define if it is still a line/continuity problem or if electronic parts (IC, diode..) should be changed.


Thanks in advance for your help

Phil


Re: [PolySix] EG and VCF not working after battery leakage

2014-05-28 by Bob Grieb


See if these functions can be controlled correctly when using patches
in memory.  If so, then the output from the CPU to the analog circuits
is OK.   Then you have a problem with reading the controls.
But if the sound is always the same with all programs, then the
output circuit is bad and maybe t is reading from the pots OK.
Did you try the DAC calibration test in the manual?  It would be helpful
to know if that is working OK.  Just the part where you try to get the
two LEDs to light up.

  Bob

From: "phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To: PolySix@yahoogroups.com
Sent: Tuesday, May 27, 2014 6:02 PM
Subject: [PolySix] EG and VCF not working after battery leakage

 
Bonjour !
I am French and happy to join this group of Polysix owner. My old Polysix bought back in 1983 has been sleeping in the attic since 1990, until I have returned back now to my first love. Unfortunately I have discovered the battery leakage problem !

So I did the standard procedure (like many)
Spend a lot of time checking the lines on KLM-367 with plenty of leds on at start up.. 
Browse internet for hours (discover service manual, old crown, etc)…, change IC 30 & 31 … recheck continuity, still few leds on..
Recheck again, change all set of panel switches (vintage planet)..4 leds on... Bank B not working...
Check lines again, to get finally only leds A1 on start up. Great !

Unfortunately sound is not OK.

Tune seems OK, 6 voices are OK, voltages from power board are OK (15V, 5V -5V and -15V) all pots and switches seem to work except the 4x EG and 4x VCF pots which are not active!
I think at this stage it is useless to do the calibration procedure. Is there some indications, checking to start with to define if it is still a line/continuity problem or if electronic parts (IC, diode..) should be changed.

Thanks in advance for your help
Phil



Re: [PolySix] EG and VCF not working after battery leakage

2014-05-28 by Phil65

Thanks Bob for your quick answer !

Seems that my patch looses "EG" from memory. I have no sound unless I put the VCA switch from EG back to "square" again to get some sound.
Not sure to keep the bank memory even when polysix is still on.

I did the procedure and it passes directly. Here a quick summary:
*dummy 56 ohm => all leds on
*remove resistance => A1 leds
*SW1 in test mode and tape switch to enable => Only leds 1+8 on
* SW1 back to normal => still leds 1+8
* "7 ) confirm that output DC click noise is within 6V p-p when power is switched off" => sorry I don't understand precisely what to do/ measure?
* Power on again => A1 leds on.

Thanks for your support
Phil


--------------------------------------------
En date de : Mer 28.5.14, Bob Grieb bobgrieb@yahoo.com [PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Mercredi 28 mai 2014, 2h09


See if
these functions can be controlled correctly when using
patchesin
memory.  If so, then the output from the CPU to the analog
circuitsis
OK.   Then you have a problem with reading the
controls.But
if the sound is always the same with all programs, then the

output
circuit is bad and maybe t is reading from the pots
OK.Did
you try the DAC calibration test in the manual?  It would
be helpfulto
know if that is working OK.  Just the part where you try to
get the
two
LEDs to light up.
 
Bob


From:
"phil0065@yahoo.fr [PolySix]"
<PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Tuesday, May 27,
2014 6:02 PM
Subject: [PolySix] EG
and VCF not
working after battery leakage





Bonjour !I am
French
and happy to join this group of Polysix owner. My old
Polysix bought back in
1983 has been sleeping in the attic since 1990, until I have
returned back now to
my first love. Unfortunately I have discovered the battery
leakage problem !
So I did
the standard procedure (like many)Spend a
lot of time checking the lines on KLM-367 with plenty of leds on at start
up.. Browse internet for hours (discover service
manual, old crown, etc)…, change IC
30 & 31 … recheck continuity, still few leds
on..Recheck again, change all set of
panel switches (vintage planet)..4 leds on... Bank B not
working...Check
lines again, to get finally only leds A1
on start up. Great !
Unfortunately sound
is not OK.
Tune seems
OK,
6 voices are OK, voltages from power board are OK (15V, 5V
-5V and -15V) all pots
and switches seem to work except the 4x EG and 4x VCF pots
which are not
active! I think at
this stage it is useless to do the calibration procedure. Is
there some indications,
checking to start with to define if it is still a
line/continuity problem or if electronic parts (IC, diode..)
should be changed.
Thanks in
advance for your help


Phil

Re: [PolySix] EG and VCF not working after battery leakage

2014-05-28 by Bob Grieb

Hi Phil,

     If you are seeing LEDs 1 and 8 in DAC calibration mode, that implies
that the DAC and the input muxes are working.   Another thing to try -
in the DAC calibration test mode, turn the two controls that you were supposed
to set for this test, and you should see the LED's change.

    Don't worry about the click noise test for now.

    The voltage demux for controlling the EG and the VCF is mostly
IC18 (4051).   I would check with the ohmmeter that you have good connections
(with the power off, of course) between pin 3 of IC18 and pin 1 of IC27, and between
pin 6 of IC18 and IC23-4.  Also, pins 9,10 and 11 of IC18 and 19 should be connected
to each other and to IC22.  

    With power on, you should be able to vary a front panel control,
such as filter cutoff, and see IC7 pin 7 change voltage as you do it (in manual
mode).   And when you select different patches, you should see the attack at IC10-1
decay at IC10-7, etc changing with different patches.  Be careful when probing with
the power on not to short anything or you can damage chips in an instant.  Use the gnd
test pt for the meter black or negative lead.

    Tell us what you measure at these points in the circuit and if they vary with the
corresponding front panel control in manual mode, or when you change patches.

    Bob

From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To: PolySix@yahoogroups.com
Sent: Wednesday, May 28, 2014 6:05 PM
Subject: Re: [PolySix] EG and VCF not working after battery leakage

 
Thanks Bob for your quick answer !

Seems that my patch looses "EG" from memory. I have no sound unless I put the VCA switch from EG back to "square" again to get some sound.
Not sure to keep the bank memory even when polysix is still on.

I did the procedure and it passes directly. Here a quick summary:
*dummy 56 ohm => all leds on
*remove resistance => A1 leds
*SW1 in test mode and tape switch to enable => Only leds 1+8 on
* SW1 back to normal => still leds 1+8
* "7 ) confirm that output DC click noise is within 6V p-p when power is switched off" => sorry I don't understand precisely what to do/ measure?
* Power on again => A1 leds on.

Thanks for your support
Phil

--------------------------------------------
En date de : Mer 28.5.14, Bob Grieb bobgrieb@yahoo.com [PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Mercredi 28 mai 2014, 2h09


See if
these functions can be controlled correctly when using
patchesin
memory.  If so, then the output from the CPU to the analog
circuitsis
OK.   Then you have a problem with reading the
controls.But
if the sound is always the same with all programs, then the

output
circuit is bad and maybe t is reading from the pots
OK.Did
you try the DAC calibration test in the manual?  It would
be helpfulto
know if that is working OK.  Just the part where you try to
get the
two
LEDs to light up.
 
Bob


From:
"phil0065@yahoo.fr [PolySix]"
<PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Tuesday, May 27,
2014 6:02 PM
Subject: [PolySix] EG
and VCF not
working after battery leakage





Bonjour !I am
French
and happy to join this group of Polysix owner. My old
Polysix bought back in
1983 has been sleeping in the attic since 1990, until I have
returned back now to
my first love. Unfortunately I have discovered the battery
leakage problem !
So I did
the standard procedure (like many)Spend a
lot of time checking the lines on KLM-367 with plenty of leds on at start
up.. Browse internet for hours (discover service
manual, old crown, etc)…, change IC
30 & 31 … recheck continuity, still few leds
on..Recheck again, change all set of
panel switches (vintage planet)..4 leds on... Bank B not
working...Check
lines again, to get finally only leds A1
on start up. Great !
Unfortunately sound
is not OK.
Tune seems
OK,
6 voices are OK, voltages from power board are OK (15V, 5V
-5V and -15V) all pots
and switches seem to work except the 4x EG and 4x VCF pots
which are not
active! I think at
this stage it is useless to do the calibration procedure. Is
there some indications,
checking to start with to define if it is still a
line/continuity problem or if electronic parts (IC, diode..)
should be changed.
Thanks in
advance for your help


Phil





Re: [PolySix] EG and VCF not working after battery leakage

2014-05-28 by Phil65

Hi Bob,
You are really helpfull. Merci !

1) I did the DAC calib again and turning VR6 CCW => from led 8 to led 7 6 then 5, while turning VR7 CCW from led 8 to 7 then 6
2) pin 3 of IC18 and pin 1 of IC27, OK
3) pin 6 of IC18 and IC23-4.  OK
4) pins 9,10 and 11 of IC18 and 19 should be connected to each other and to IC22 ?
  It seems I have a problem here. I found only IC18-9 + IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected together. Nothing between IC18-10 (IC18-11) with any pin of IC19 or IC22 ??
Shall I strap IC18-9 + 10 + 11

5) With power on, you should be able to vary a front panel
control,such as filter cutoff, and see IC7 pin 7 change voltage as you
do it (in manual mode).

3.177V => 3.120V cut off from 10 to 0 with all controls at normal setting

  
6) when you select different patches, you should see the attack at IC10-1decay

=> On IC 10-1 no change always 13.56V

7) Decay at IC10-7 ?

=>slight variation between patches. In manual mode and normal setting with decay control from 0 to 10 => 3.240V to 3.346V


Thanks for your help, really appreciated !
Phil

--------------------------------------------
En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com [PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Jeudi 29 mai 2014, 0h21


 









Hi Phil,
    
If you are seeing LEDs 1 and 8 in DAC calibration mode, that
impliesthat
the DAC and the input muxes are working.   Another thing
to try -
in
the DAC calibration test mode, turn the two controls that
you were supposedto
set for this test, and you should see the LED's
change.
   
Don't worry about the click noise test for
now.
   
The voltage demux for controlling the EG and the VCF is
mostlyIC18
(4051).   I would check with the ohmmeter that you have
good connections(with
the power off, of course) between pin 3 of IC18 and pin 1 of
IC27, and between
pin
6 of IC18 and IC23-4.  Also, pins 9,10 and 11 of IC18 and
19 should be connectedto
each other and to IC22.  

   
With power on, you should be able to vary a front panel
control,such
as filter cutoff, and see IC7 pin 7 change voltage as you
do it (in manual
mode).  
And when you select different patches, you should see the
attack at IC10-1decay
at IC10-7, etc changing with different patches.  Be careful
when probing with
the
power on not to short anything or you can damage chips in an
instant.  Use the gndtest
pt for the meter black or negative lead.


   
Tell us what you measure at these points in the circuit and
if they vary with the
corresponding
front panel control in manual mode, or when you change
patches.
   
Bob


From:
"Phil65 phil0065@yahoo.fr [PolySix]"
<PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Wednesday, May
28, 2014 6:05 PM
Subject: Re: [PolySix]
EG and VCF not working after battery leakage


 









Thanks Bob for your quick answer !



Seems that my patch looses "EG" from memory. I
have no sound unless I put the VCA switch from EG back to
"square" again to get some sound.

Not sure to keep the bank memory even when polysix is still
on.



I did the procedure and it passes directly. Here a quick
summary:

*dummy 56 ohm => all leds on

*remove resistance => A1 leds

*SW1 in test mode and tape switch to enable => Only leds
1+8 on

* SW1 back to normal => still leds 1+8

* "7 ) confirm that output DC click noise is within 6V
p-p when power is switched off" => sorry I don't
understand precisely what to do/ measure?

* Power on again => A1 leds on.



Thanks for your support

Phil



--------------------------------------------

En date de : Mer 28.5.14, Bob Grieb bobgrieb@yahoo.com
[PolySix] <PolySix@yahoogroups.com> a écrit :



Objet: Re: [PolySix] EG and VCF not working after battery
leakage

À: "PolySix@yahoogroups.com"
<PolySix@yahoogroups.com>

Date: Mercredi 28 mai 2014, 2h09





See if

these functions can be controlled correctly when using

patchesin

memory.  If so, then the output from the CPU to the
analog

circuitsis

OK.   Then you have a problem with reading the

controls.But

if the sound is always the same with all programs, then
the



output

circuit is bad and maybe t is reading from the pots

OK.Did

you try the DAC calibration test in the manual?  It
would

be helpfulto

know if that is working OK.  Just the part where you try
to

get the

two

LEDs to light up.

 

Bob





From:

"phil0065@yahoo.fr [PolySix]"

<PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Tuesday, May 27,

2014 6:02 PM

Subject: [PolySix] EG

and VCF not

working after battery leakage











Bonjour !I am

French

and happy to join this group of Polysix owner. My old

Polysix bought back in

1983 has been sleeping in the attic since 1990, until I
have

returned back now to

my first love. Unfortunately I have discovered the
battery

leakage problem !

So I did

the standard procedure (like many)Spend a

lot of time checking the lines on KLM-367 with plenty of
leds on at start

up.. Browse internet for hours (discover service

manual, old crown, etc)…, change IC

30 & 31 … recheck continuity, still few leds

on..Recheck again, change all set of

panel switches (vintage planet)..4 leds on... Bank B not

working...Check

lines again, to get finally only leds A1

on start up. Great !

Unfortunately sound

is not OK.

Tune seems

OK,

6 voices are OK, voltages from power board are OK (15V,
5V

-5V and -15V) all pots

and switches seem to work except the 4x EG and 4x VCF
pots

which are not

active! I think at

this stage it is useless to do the calibration procedure.
Is

there some indications,

checking to start with to define if it is still a

line/continuity problem or if electronic parts (IC,
diode..)

should be changed.

Thanks in

advance for your help





Phil





























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Re: [PolySix] EG and VCF not working after battery leakage

2014-05-29 by Bob Grieb


These should be connected:

IC18-9 IC19-9 and IC22-23  this is signal "P22"

IC18-10 IC19-10 and IC22-22  this is signal "P21"

IC18-11 IC19-11 and IC22-21  this is signal "P20"

IC19-6 and IC23-10

Also, IC18-3 must connect to IC19-3 as well as to IC27-1 which you checked already.

You may want to download the service manual as it is available for
free on the web, and see the schematic for KLM-367.

If IC18 and IC19 are not connected properly, the control voltages
won't work correctly.

Please ignore IC22 pins 5, 19,and 35.    They are not related to
this discussion.  We are checking A B C and INH signals to IC18 and IC19.

   Bob



From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To: PolySix@yahoogroups.com
Sent: Wednesday, May 28, 2014 7:55 PM
Subject: Re: [PolySix] EG and VCF not working after battery leakage

 
Hi Bob,
You are really helpfull. Merci !

1) I did the DAC calib again and turning VR6 CCW => from led 8 to led 7 6 then 5, while turning VR7 CCW from led 8 to 7 then 6
2) pin 3 of IC18 and pin 1 of IC27, OK
3) pin 6 of IC18 and IC23-4.  OK
4) pins 9,10 and 11 of IC18 and 19 should be connected to each other and to IC22 ?
  It seems I have a problem here. I found only IC18-9 + IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected together. Nothing between IC18-10 (IC18-11) with any pin of IC19 or IC22 ??
Shall I strap IC18-9 + 10 + 11

5) With power on, you should be able to vary a front panel
control,such as filter cutoff, and see IC7 pin 7 change voltage as you
do it (in manual mode).

3.177V => 3.120V cut off from 10 to 0 with all controls at normal setting

  
6) when you select different patches, you should see the attack at IC10-1decay

=> On IC 10-1 no change always 13.56V

7) Decay at IC10-7 ?

=>slight variation between patches. In manual mode and normal setting with decay control from 0 to 10 => 3.240V to 3.346V

Thanks for your help, really appreciated !
Phil

--------------------------------------------
En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com [PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Jeudi 29 mai 2014, 0h21


 









Hi Phil,
    
If you are seeing LEDs 1 and 8 in DAC calibration mode, that
impliesthat
the DAC and the input muxes are working.   Another thing
to try -
in
the DAC calibration test mode, turn the two controls that
you were supposedto
set for this test, and you should see the LED's
change.
   
Don't worry about the click noise test for
now.
   
The voltage demux for controlling the EG and the VCF is
mostlyIC18
(4051).   I would check with the ohmmeter that you have
good connections(with
the power off, of course) between pin 3 of IC18 and pin 1 of
IC27, and between
pin
6 of IC18 and IC23-4.  Also, pins 9,10 and 11 of IC18 and
19 should be connectedto
each other and to IC22.  

   
With power on, you should be able to vary a front panel
control,such
as filter cutoff, and see IC7 pin 7 change voltage as you
do it (in manual
mode).  
And when you select different patches, you should see the
attack at IC10-1decay
at IC10-7, etc changing with different patches.  Be careful
when probing with
the
power on not to short anything or you can damage chips in an
instant.  Use the gndtest
pt for the meter black or negative lead.


   
Tell us what you measure at these points in the circuit and
if they vary with the
corresponding
front panel control in manual mode, or when you change
patches.
   
Bob


From:
"Phil65 phil0065@yahoo.fr [PolySix]"
<PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Wednesday, May
28, 2014 6:05 PM
Subject: Re: [PolySix]
EG and VCF not working after battery leakage


 









Thanks Bob for your quick answer !



Seems that my patch looses "EG" from memory. I
have no sound unless I put the VCA switch from EG back to
"square" again to get some sound.

Not sure to keep the bank memory even when polysix is still
on.



I did the procedure and it passes directly. Here a quick
summary:

*dummy 56 ohm => all leds on

*remove resistance => A1 leds

*SW1 in test mode and tape switch to enable => Only leds
1+8 on

* SW1 back to normal => still leds 1+8

* "7 ) confirm that output DC click noise is within 6V
p-p when power is switched off" => sorry I don't
understand precisely what to do/ measure?

* Power on again => A1 leds on.



Thanks for your support

Phil



--------------------------------------------

En date de : Mer 28.5.14, Bob Grieb bobgrieb@yahoo.com
[PolySix] <PolySix@yahoogroups.com> a écrit :



Objet: Re: [PolySix] EG and VCF not working after battery
leakage

À: "PolySix@yahoogroups.com"
<PolySix@yahoogroups.com>

Date: Mercredi 28 mai 2014, 2h09





See if

these functions can be controlled correctly when using

patchesin

memory.  If so, then the output from the CPU to the
analog

circuitsis

OK.   Then you have a problem with reading the

controls.But

if the sound is always the same with all programs, then
the



output

circuit is bad and maybe t is reading from the pots

OK.Did

you try the DAC calibration test in the manual?  It
would

be helpfulto

know if that is working OK.  Just the part where you try
to

get the

two

LEDs to light up.

 

Bob





From:

"phil0065@yahoo.fr [PolySix]"

<PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Tuesday, May 27,

2014 6:02 PM

Subject: [PolySix] EG

and VCF not

working after battery leakage











Bonjour !I am

French

and happy to join this group of Polysix owner. My old

Polysix bought back in

1983 has been sleeping in the attic since 1990, until I
have

returned back now to

my first love. Unfortunately I have discovered the
battery

leakage problem !

So I did

the standard procedure (like many)Spend a

lot of time checking the lines on KLM-367 with plenty of
leds on at start

up.. Browse internet for hours (discover service

manual, old crown, etc)…, change IC

30 & 31 … recheck continuity, still few leds

on..Recheck again, change all set of

panel switches (vintage planet)..4 leds on... Bank B not

working...Check

lines again, to get finally only leds A1

on start up. Great !

Unfortunately sound

is not OK.

Tune seems

OK,

6 voices are OK, voltages from power board are OK (15V,
5V

-5V and -15V) all pots

and switches seem to work except the 4x EG and 4x VCF
pots

which are not

active! I think at

this stage it is useless to do the calibration procedure.
Is

there some indications,

checking to start with to define if it is still a

line/continuity problem or if electronic parts (IC,
diode..)

should be changed.

Thanks in

advance for your help





Phil





























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Re: [PolySix] EG and VCF not working after battery leakage

2014-05-29 by Phil65

Looking at the klm367 schematic, I understand now your point with the connections between pins and signal P20, P21 and P22 but I had some diffuculty to cross link that information with the PCB drawing... until I realize that i was counting incorrectly the pins while I did know that it was from top right then CCW
Do what I say, not what I do... I was correct for top side numbers but reverse for the bottom side i.e i did restart with 9 below 1... Stupid!


So now I do have the following:

P22 IC18-9 IC19-9 and IC22-23  => OK
P21 IC18-10 IC19-10 and IC22-22 => OK
P20 IC18-11 IC19-11 and IC22-21  => OK
INH IC19-6 and IC23-10 => OK
"X" IC18-3 and IC19-3 and IC27-1 =>OK


I did recheck my previous post to correct them in light of my wrong pin counting


1) I did the DAC calib again and turning VR6 CCW => from led 8 to led 7 6 then 5, while turning VR7 CCW from led 8 to 7 then 6
OK

2) pin 3 of IC18 and pin 1 of IC27, OK
OK

3) pin 6 of IC18 and IC23-4. OK
OK

4) pins 9,10 and 11 of IC18 and 19 should be connected to each other and to IC22 ?

UPDATED: Wrong comment see above!

5) With power on, you should be able to vary a front panel
control,such as filter cutoff, and see IC7 pin 7 change voltage as you
do it (in manual mode).

3.177V => 3.120V cut off from 10 to 0 with all controls at normal setting

UPDATED: Luckily correct, I did measure in fact pin 6 but it is strapped to pin 7...


6) when you select different patches, you should see the attack at IC10-1decay

=> On IC 10-1 no change always 13.56V

UPDATED: Correct measurement

7) Decay at IC10-7 ?

=>slight variation between patches. In manual mode and normal setting with decay control from 0 to 10 => 3.240V to 3.346V

UPDATED: Again Luckily correct, I did measure in fact pin 6 but it is strapped to pin 7...


I apologize for my mistake and thanks again for your patience and your support.
Phil

--------------------------------------------
En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com [PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Jeudi 29 mai 2014, 3h28


These should be
connected:
IC18-9 IC19-9 and IC22-23  this
is signal "P22"
IC18-10 IC19-10 and IC22-22 
this is signal
"P21"
IC18-11 IC19-11 and IC22-21 
this is signal "P20"
IC19-6 and
IC23-10
Also, IC18-3 must connect to
IC19-3 as well as to IC27-1 which you checked already.

You may want to download the
service manual as it is available forfree on the web, and see the
schematic for KLM-367.
If IC18 and IC19 are not
connected properly, the control voltages
won't work
correctly.
Please ignore IC22 pins 5, 19,and
35.    They are not related to
this discussion.  We are
checking A B C and INH signals to IC18 and
IC19.
   Bob



From: "Phil65
phil0065@yahoo.fr [PolySix]"
<PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Wednesday, May
28, 2014 7:55 PM

Subject: Re: [PolySix]
EG and VCF not working after battery leakage


 









Hi Bob,

You are really helpfull. Merci !



1) I did the DAC calib again and turning VR6 CCW => from
led 8 to led 7 6 then 5, while turning VR7 CCW from led 8
to 7 then 6

2) pin 3 of IC18 and pin 1 of IC27, OK

3) pin 6 of IC18 and IC23-4.  OK

4) pins 9,10 and 11 of IC18 and 19 should be connected to
each other and to IC22 ?

  It seems I have a problem here. I found only IC18-9 +
IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected together.
Nothing between IC18-10 (IC18-11) with any pin of IC19 or
IC22 ??

Shall I strap IC18-9 + 10 + 11



5) With power on, you should be able to vary a front
panel

control,such as filter cutoff, and see IC7 pin 7 change
voltage as you

do it (in manual mode).



3.177V => 3.120V cut off from 10 to 0 with all controls
at normal setting



  

6) when you select different patches, you should see the
attack at IC10-1decay



=> On IC 10-1 no change always 13.56V



7) Decay at IC10-7 ?



=>slight variation between patches. In manual mode and
normal setting with decay control from 0 to 10 => 3.240V
to 3.346V



Thanks for your help, really appreciated !

Phil



--------------------------------------------

En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com
[PolySix] <PolySix@yahoogroups.com> a écrit :



Objet: Re: [PolySix] EG and VCF not working after battery
leakage

À: "PolySix@yahoogroups.com"
<PolySix@yahoogroups.com>

Date: Jeudi 29 mai 2014, 0h21





 



















Hi Phil,

    

If you are seeing LEDs 1 and 8 in DAC calibration mode,
that

impliesthat

the DAC and the input muxes are working.   Another
thing

to try -

in

the DAC calibration test mode, turn the two controls
that

you were supposedto

set for this test, and you should see the LED's

change.

   

Don't worry about the click noise test for

now.

   

The voltage demux for controlling the EG and the VCF is

mostlyIC18

(4051).   I would check with the ohmmeter that you
have

good connections(with

the power off, of course) between pin 3 of IC18 and pin 1
of

IC27, and between

pin

6 of IC18 and IC23-4.  Also, pins 9,10 and 11 of IC18
and

19 should be connectedto

each other and to IC22.  



   

With power on, you should be able to vary a front panel

control,such

as filter cutoff, and see IC7 pin 7 change voltage as
you

do it (in manual

mode).  

And when you select different patches, you should see
the

attack at IC10-1decay

at IC10-7, etc changing with different patches.  Be
careful

when probing with

the

power on not to short anything or you can damage chips in
an

instant.  Use the gndtest

pt for the meter black or negative lead.





   

Tell us what you measure at these points in the circuit
and

if they vary with the

corresponding

front panel control in manual mode, or when you change

patches.

   

Bob





From:

"Phil65 phil0065@yahoo.fr [PolySix]"

<PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Wednesday, May

28, 2014 6:05 PM

Subject: Re: [PolySix]

EG and VCF not working after battery leakage





 



















Thanks Bob for your quick answer !







Seems that my patch looses "EG" from memory. I

have no sound unless I put the VCA switch from EG back
to

"square" again to get some sound.



Not sure to keep the bank memory even when polysix is
still

on.







I did the procedure and it passes directly. Here a quick

summary:



*dummy 56 ohm => all leds on



*remove resistance => A1 leds



*SW1 in test mode and tape switch to enable => Only
leds

1+8 on



* SW1 back to normal => still leds 1+8



* "7 ) confirm that output DC click noise is within
6V

p-p when power is switched off" => sorry I
don't

understand precisely what to do/ measure?



* Power on again => A1 leds on.







Thanks for your support



Phil







--------------------------------------------



En date de : Mer 28.5.14, Bob Grieb bobgrieb@yahoo.com

[PolySix] <PolySix@yahoogroups.com> a écrit :







Objet: Re: [PolySix] EG and VCF not working after
battery

leakage



À: "PolySix@yahoogroups.com"

<PolySix@yahoogroups.com>



Date: Mercredi 28 mai 2014, 2h09











See if



these functions can be controlled correctly when using



patchesin



memory.  If so, then the output from the CPU to the

analog



circuitsis



OK.   Then you have a problem with reading the



controls.But



if the sound is always the same with all programs, then

the







output



circuit is bad and maybe t is reading from the pots



OK.Did



you try the DAC calibration test in the manual?  It

would



be helpfulto



know if that is working OK.  Just the part where you
try

to



get the



two



LEDs to light up.



 



Bob











From:



"phil0065@yahoo.fr [PolySix]"



<PolySix@yahoogroups.com>



To:



PolySix@yahoogroups.com



Sent: Tuesday, May 27,



2014 6:02 PM



Subject: [PolySix] EG



and VCF not



working after battery leakage























Bonjour !I am



French



and happy to join this group of Polysix owner. My old



Polysix bought back in



1983 has been sleeping in the attic since 1990, until I

have



returned back now to



my first love. Unfortunately I have discovered the

battery



leakage problem !



So I did



the standard procedure (like many)Spend a



lot of time checking the lines on KLM-367 with plenty
of

leds on at start



up.. Browse internet for hours (discover service



manual, old crown, etc)…, change IC



30 & 31 … recheck continuity, still few leds



on..Recheck again, change all set of



panel switches (vintage planet)..4 leds on... Bank B
not



working...Check



lines again, to get finally only leds A1



on start up. Great !



Unfortunately sound



is not OK.



Tune seems



OK,



6 voices are OK, voltages from power board are OK (15V,

5V



-5V and -15V) all pots



and switches seem to work except the 4x EG and 4x VCF

pots



which are not



active! I think at



this stage it is useless to do the calibration
procedure.

Is



there some indications,



checking to start with to define if it is still a



line/continuity problem or if electronic parts (IC,

diode..)



should be changed.



Thanks in



advance for your help











Phil



























































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Re: [PolySix] EG and VCF not working after battery leakage

2014-05-29 by Bob Grieb


Hi,

    So it seems that all of those connections are OK.  Please check the
IC23 connections next.  P23 from IC22 to IC23-12,13,8, and the other
connections on IC23 which you can see on the schematic.   I am assuming
that you do not have an oscilloscope, right?

    You say you have 13.56 volts at IC10-1   That's interesting, as
IC18 outputs should range from -5 to +5 only.   Does IC10 have -15
on pin 4?   Does IC18 have +5 on pin 16 and -5 on pin 7?

   Bob

From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To: PolySix@yahoogroups.com
Sent: Thursday, May 29, 2014 4:47 AM
Subject: Re: [PolySix] EG and VCF not working after battery leakage

 
Looking at the klm367 schematic, I understand now your point with the connections between pins and signal P20, P21 and P22 but I had some diffuculty to cross link that information with the PCB drawing... until I realize that i was counting incorrectly the pins while I did know that it was from top right then CCW
Do what I say, not what I do... I was correct for top side numbers but reverse for the bottom side i.e i did restart with 9 below 1... Stupid!

So now I do have the following:

P22 IC18-9 IC19-9 and IC22-23  => OK
P21 IC18-10 IC19-10 and IC22-22 => OK
P20 IC18-11 IC19-11 and IC22-21  => OK
INH IC19-6 and IC23-10 => OK
"X" IC18-3 and IC19-3 and IC27-1 =>OK

I did recheck my previous post to correct them in light of my wrong pin counting

1) I did the DAC calib again and turning VR6 CCW => from led 8 to led 7 6 then 5, while turning VR7 CCW from led 8 to 7 then 6
OK

2) pin 3 of IC18 and pin 1 of IC27, OK
OK

3) pin 6 of IC18 and IC23-4. OK
OK

4) pins 9,10 and 11 of IC18 and 19 should be connected to each other and to IC22 ?

UPDATED: Wrong comment see above!

5) With power on, you should be able to vary a front panel
control,such as filter cutoff, and see IC7 pin 7 change voltage as you
do it (in manual mode).

3.177V => 3.120V cut off from 10 to 0 with all controls at normal setting

UPDATED: Luckily correct, I did measure in fact pin 6 but it is strapped to pin 7...

6) when you select different patches, you should see the attack at IC10-1decay

=> On IC 10-1 no change always 13.56V

UPDATED: Correct measurement

7) Decay at IC10-7 ?

=>slight variation between patches. In manual mode and normal setting with decay control from 0 to 10 => 3.240V to 3.346V

UPDATED: Again Luckily correct, I did measure in fact pin 6 but it is strapped to pin 7...

I apologize for my mistake and thanks again for your patience and your support.
Phil

--------------------------------------------
En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com [PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Jeudi 29 mai 2014, 3h28


These should be
connected:
IC18-9 IC19-9 and IC22-23  this
is signal "P22"
IC18-10 IC19-10 and IC22-22 
this is signal
"P21"
IC18-11 IC19-11 and IC22-21 
this is signal "P20"
IC19-6 and
IC23-10
Also, IC18-3 must connect to
IC19-3 as well as to IC27-1 which you checked already.

You may want to download the
service manual as it is available forfree on the web, and see the
schematic for KLM-367.
If IC18 and IC19 are not
connected properly, the control voltages
won't work
correctly.
Please ignore IC22 pins 5, 19,and
35.    They are not related to
this discussion.  We are
checking A B C and INH signals to IC18 and
IC19.
   Bob



From: "Phil65
phil0065@yahoo.fr [PolySix]"
<PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Wednesday, May
28, 2014 7:55 PM

Subject: Re: [PolySix]
EG and VCF not working after battery leakage


 









Hi Bob,

You are really helpfull. Merci !



1) I did the DAC calib again and turning VR6 CCW => from
led 8 to led 7 6 then 5, while turning VR7 CCW from led 8
to 7 then 6

2) pin 3 of IC18 and pin 1 of IC27, OK

3) pin 6 of IC18 and IC23-4.  OK

4) pins 9,10 and 11 of IC18 and 19 should be connected to
each other and to IC22 ?

  It seems I have a problem here. I found only IC18-9 +
IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected together.
Nothing between IC18-10 (IC18-11) with any pin of IC19 or
IC22 ??

Shall I strap IC18-9 + 10 + 11



5) With power on, you should be able to vary a front
panel

control,such as filter cutoff, and see IC7 pin 7 change
voltage as you

do it (in manual mode).



3.177V => 3.120V cut off from 10 to 0 with all controls
at normal setting



  

6) when you select different patches, you should see the
attack at IC10-1decay



=> On IC 10-1 no change always 13.56V



7) Decay at IC10-7 ?



=>slight variation between patches. In manual mode and
normal setting with decay control from 0 to 10 => 3.240V
to 3.346V



Thanks for your help, really appreciated !

Phil



--------------------------------------------

En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com
[PolySix] <PolySix@yahoogroups.com> a écrit :



Objet: Re: [PolySix] EG and VCF not working after battery
leakage

À: "PolySix@yahoogroups.com"
<PolySix@yahoogroups.com>

Date: Jeudi 29 mai 2014, 0h21





 



















Hi Phil,

    

If you are seeing LEDs 1 and 8 in DAC calibration mode,
that

impliesthat

the DAC and the input muxes are working.   Another
thing

to try -

in

the DAC calibration test mode, turn the two controls
that

you were supposedto

set for this test, and you should see the LED's

change.

   

Don't worry about the click noise test for

now.

   

The voltage demux for controlling the EG and the VCF is

mostlyIC18

(4051).   I would check with the ohmmeter that you
have

good connections(with

the power off, of course) between pin 3 of IC18 and pin 1
of

IC27, and between

pin

6 of IC18 and IC23-4.  Also, pins 9,10 and 11 of IC18
and

19 should be connectedto

each other and to IC22.  



   

With power on, you should be able to vary a front panel

control,such

as filter cutoff, and see IC7 pin 7 change voltage as
you

do it (in manual

mode).  

And when you select different patches, you should see
the

attack at IC10-1decay

at IC10-7, etc changing with different patches.  Be
careful

when probing with

the

power on not to short anything or you can damage chips in
an

instant.  Use the gndtest

pt for the meter black or negative lead.





   

Tell us what you measure at these points in the circuit
and

if they vary with the

corresponding

front panel control in manual mode, or when you change

patches.

   

Bob





From:

"Phil65 phil0065@yahoo.fr [PolySix]"

<PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Wednesday, May

28, 2014 6:05 PM

Subject: Re: [PolySix]

EG and VCF not working after battery leakage





 



















Thanks Bob for your quick answer !







Seems that my patch looses "EG" from memory. I

have no sound unless I put the VCA switch from EG back
to

"square" again to get some sound.



Not sure to keep the bank memory even when polysix is
still

on.







I did the procedure and it passes directly. Here a quick

summary:



*dummy 56 ohm => all leds on



*remove resistance => A1 leds



*SW1 in test mode and tape switch to enable => Only
leds

1+8 on



* SW1 back to normal => still leds 1+8



* "7 ) confirm that output DC click noise is within
6V

p-p when power is switched off" => sorry I
don't

understand precisely what to do/ measure?



* Power on again => A1 leds on.







Thanks for your support



Phil







--------------------------------------------



En date de : Mer 28.5.14, Bob Grieb bobgrieb@yahoo.com

[PolySix] <PolySix@yahoogroups.com> a écrit :







Objet: Re: [PolySix] EG and VCF not working after
battery

leakage



À: "PolySix@yahoogroups.com"

<PolySix@yahoogroups.com>



Date: Mercredi 28 mai 2014, 2h09











See if



these functions can be controlled correctly when using



patchesin



memory.  If so, then the output from the CPU to the

analog



circuitsis



OK.   Then you have a problem with reading the



controls.But



if the sound is always the same with all programs, then

the







output



circuit is bad and maybe t is reading from the pots



OK.Did



you try the DAC calibration test in the manual?  It

would



be helpfulto



know if that is working OK.  Just the part where you
try

to



get the



two



LEDs to light up.



 



Bob











From:



"phil0065@yahoo.fr [PolySix]"



<PolySix@yahoogroups.com>



To:



PolySix@yahoogroups.com



Sent: Tuesday, May 27,



2014 6:02 PM



Subject: [PolySix] EG



and VCF not



working after battery leakage























Bonjour !I am



French



and happy to join this group of Polysix owner. My old



Polysix bought back in



1983 has been sleeping in the attic since 1990, until I

have



returned back now to



my first love. Unfortunately I have discovered the

battery



leakage problem !



So I did



the standard procedure (like many)Spend a



lot of time checking the lines on KLM-367 with plenty
of

leds on at start



up.. Browse internet for hours (discover service



manual, old crown, etc)…, change IC



30 & 31 … recheck continuity, still few leds



on..Recheck again, change all set of



panel switches (vintage planet)..4 leds on... Bank B
not



working...Check



lines again, to get finally only leds A1



on start up. Great !



Unfortunately sound



is not OK.



Tune seems



OK,



6 voices are OK, voltages from power board are OK (15V,

5V



-5V and -15V) all pots



and switches seem to work except the 4x EG and 4x VCF

pots



which are not



active! I think at



this stage it is useless to do the calibration
procedure.

Is



there some indications,



checking to start with to define if it is still a



line/continuity problem or if electronic parts (IC,

diode..)



should be changed.



Thanks in



advance for your help











Phil



























































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Re: [PolySix] EG and VCF not working after battery leakage

2014-05-29 by Johannes Hausensteiner

Hi,

Most probably IC1 on KLM-370 (the 4051 analog mux) is dead. I had this
before; the leaked battery acid crawls along the thick black ground wire
up to KLM-370 and continues its destructive work there. Replace that
black wire as well.

Good luck!

Johannes


On 29.05.2014 13:34, Bob Grieb bobgrieb@yahoo.com [PolySix] wrote:
>
>
>
> Hi,
>
> So it seems that all of those connections are OK. Please check the
> IC23 connections next. P23 from IC22 to IC23-12,13,8, and the other
> connections on IC23 which you can see on the schematic. I am assuming
> that you do not have an oscilloscope, right?
>
> You say you have 13.56 volts at IC10-1 That's interesting, as
> IC18 outputs should range from -5 to +5 only. Does IC10 have -15
> on pin 4? Does IC18 have +5 on pin 16 and -5 on pin 7?
>
> Bob
>
> ------------------------------------------------------------------------
> *From:* "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
> *To:* PolySix@yahoogroups.com
> *Sent:* Thursday, May 29, 2014 4:47 AM
> *Subject:* Re: [PolySix] EG and VCF not working after battery leakage
>
> Looking at the klm367 schematic, I understand now your point with the
> connections between pins and signal P20, P21 and P22 but I had some
> diffuculty to cross link that information with the PCB drawing... until
> I realize that i was counting incorrectly the pins while I did know that
> it was from top right then CCW
> Do what I say, not what I do... I was correct for top side numbers but
> reverse for the bottom side i.e i did restart with 9 below 1... Stupid!
>
> So now I do have the following:
>
> P22 IC18-9 IC19-9 and IC22-23 => OK
> P21 IC18-10 IC19-10 and IC22-22 => OK
> P20 IC18-11 IC19-11 and IC22-21 => OK
> INH IC19-6 and IC23-10 => OK
> "X" IC18-3 and IC19-3 and IC27-1 =>OK
>
> I did recheck my previous post to correct them in light of my wrong pin
> counting
>
> 1) I did the DAC calib again and turning VR6 CCW => from led 8 to led 7
> 6 then 5, while turning VR7 CCW from led 8 to 7 then 6
> OK
>
> 2) pin 3 of IC18 and pin 1 of IC27, OK
> OK
>
> 3) pin 6 of IC18 and IC23-4. OK
> OK
>
> 4) pins 9,10 and 11 of IC18 and 19 should be connected to each other and
> to IC22 ?
>
> UPDATED: Wrong comment see above!
>
> 5) With power on, you should be able to vary a front panel
> control,such as filter cutoff, and see IC7 pin 7 change voltage as you
> do it (in manual mode).
>
> 3.177V => 3.120V cut off from 10 to 0 with all controls at normal setting
>
> UPDATED: Luckily correct, I did measure in fact pin 6 but it is strapped
> to pin 7...
>
> 6) when you select different patches, you should see the attack at
> IC10-1decay
>
> => On IC 10-1 no change always 13.56V
>
> UPDATED: Correct measurement
>
> 7) Decay at IC10-7 ?
>
> =>slight variation between patches. In manual mode and normal setting
> with decay control from 0 to 10 => 3.240V to 3.346V
>
> UPDATED: Again Luckily correct, I did measure in fact pin 6 but it is
> strapped to pin 7...
>
> I apologize for my mistake and thanks again for your patience and your
> support.
> Phil
>
> --------------------------------------------
> En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com [PolySix]
> <PolySix@yahoogroups.com> a écrit :
>
> Objet: Re: [PolySix] EG and VCF not working after battery leakage
> À: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
> Date: Jeudi 29 mai 2014, 3h28
>
>
> These should be
> connected:
> IC18-9 IC19-9 and IC22-23 this
> is signal "P22"
> IC18-10 IC19-10 and IC22-22
> this is signal
> "P21"
> IC18-11 IC19-11 and IC22-21
> this is signal "P20"
> IC19-6 and
> IC23-10
> Also, IC18-3 must connect to
> IC19-3 as well as to IC27-1 which you checked already.
>
> You may want to download the
> service manual as it is available forfree on the web, and see the
> schematic for KLM-367.
> If IC18 and IC19 are not
> connected properly, the control voltages
> won't work
> correctly.
> Please ignore IC22 pins 5, 19,and
> 35. They are not related to
> this discussion. We are
> checking A B C and INH signals to IC18 and
> IC19.
> Bob
>
>
>
> From: "Phil65
> phil0065@yahoo.fr [PolySix]"
> <PolySix@yahoogroups.com>
> To:
> PolySix@yahoogroups.com
> Sent: Wednesday, May
> 28, 2014 7:55 PM
>
> Subject: Re: [PolySix]
> EG and VCF not working after battery leakage
>
>
>
>
>
>
>
>
>
>
>
>
> Hi Bob,
>
> You are really helpfull. Merci !
>
>
>
> 1) I did the DAC calib again and turning VR6 CCW => from
> led 8 to led 7 6 then 5, while turning VR7 CCW from led 8
> to 7 then 6
>
> 2) pin 3 of IC18 and pin 1 of IC27, OK
>
> 3) pin 6 of IC18 and IC23-4. OK
>
> 4) pins 9,10 and 11 of IC18 and 19 should be connected to
> each other and to IC22 ?
>
> It seems I have a problem here. I found only IC18-9 +
> IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected together.
> Nothing between IC18-10 (IC18-11) with any pin of IC19 or
> IC22 ??
>
> Shall I strap IC18-9 + 10 + 11
>
>
>
> 5) With power on, you should be able to vary a front
> panel
>
> control,such as filter cutoff, and see IC7 pin 7 change
> voltage as you
>
> do it (in manual mode).
>
>
>
> 3.177V => 3.120V cut off from 10 to 0 with all controls
> at normal setting
>
>
>
>
>
> 6) when you select different patches, you should see the
> attack at IC10-1decay
>
>
>
> => On IC 10-1 no change always 13.56V
>
>
>
> 7) Decay at IC10-7 ?
>
>
>
> =>slight variation between patches. In manual mode and
> normal setting with decay control from 0 to 10 => 3.240V
> to 3.346V
>
>
>
> Thanks for your help, really appreciated !
>
> Phil
>
>
>
> --------------------------------------------
>
> En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com
> [PolySix] <PolySix@yahoogroups.com> a écrit :
>
>
>
> Objet: Re: [PolySix] EG and VCF not working after battery
> leakage
>
> À: "PolySix@yahoogroups.com"
> <PolySix@yahoogroups.com>
>
> Date: Jeudi 29 mai 2014, 0h21
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Hi Phil,
>
>
>
> If you are seeing LEDs 1 and 8 in DAC calibration mode,
> that
>
> impliesthat
>
> the DAC and the input muxes are working. Another
> thing
>
> to try -
>
> in
>
> the DAC calibration test mode, turn the two controls
> that
>
> you were supposedto
>
> set for this test, and you should see the LED's
>
> change.
>
>
>
> Don't worry about the click noise test for
>
> now.
>
>
>
> The voltage demux for controlling the EG and the VCF is
>
> mostlyIC18
>
> (4051). I would check with the ohmmeter that you
> have
>
> good connections(with
>
> the power off, of course) between pin 3 of IC18 and pin 1
> of
>
> IC27, and between
>
> pin
>
> 6 of IC18 and IC23-4. Also, pins 9,10 and 11 of IC18
> and
>
> 19 should be connectedto
>
> each other and to IC22.
>
>
>
>
>
> With power on, you should be able to vary a front panel
>
> control,such
>
> as filter cutoff, and see IC7 pin 7 change voltage as
> you
>
> do it (in manual
>
> mode).
>
> And when you select different patches, you should see
> the
>
> attack at IC10-1decay
>
> at IC10-7, etc changing with different patches. Be
> careful
>
> when probing with
>
> the
>
> power on not to short anything or you can damage chips in
> an
>
> instant. Use the gndtest
>
> pt for the meter black or negative lead.
>
>
>
>
>
>
>
> Tell us what you measure at these points in the circuit
> and
>
> if they vary with the
>
> corresponding
>
> front panel control in manual mode, or when you change
>
> patches.
>
>
>
> Bob
>
>
>
>
>
> From:
>
> "Phil65 phil0065@yahoo.fr [PolySix]"
>
> <PolySix@yahoogroups.com>
>
> To:
>
> PolySix@yahoogroups.com
>
> Sent: Wednesday, May
>
> 28, 2014 6:05 PM
>
> Subject: Re: [PolySix]
>
> EG and VCF not working after battery leakage
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Thanks Bob for your quick answer !
>
>
>
>
>
>
>
> Seems that my patch looses "EG" from memory. I
>
> have no sound unless I put the VCA switch from EG back
> to
>
> "square" again to get some sound.
>
>
>
> Not sure to keep the bank memory even when polysix is
> still
>
> on.
>
>
>
>
>
>
>
> I did the procedure and it passes directly. Here a quick
>
> summary:
>
>
>
> *dummy 56 ohm => all leds on
>
>
>
> *remove resistance => A1 leds
>
>
>
> *SW1 in test mode and tape switch to enable => Only
> leds
>
> 1+8 on
>
>
>
> * SW1 back to normal => still leds 1+8
>
>
>
> * "7 ) confirm that output DC click noise is within
> 6V
>
> p-p when power is switched off" => sorry I
> don't
>
> understand precisely what to do/ measure?
>
>
>
> * Power on again => A1 leds on.
>
>
>
>
>
>
>
> Thanks for your support
>
>
>
> Phil
>
>
>
>
>
>
>
> --------------------------------------------
>
>
>
> En date de : Mer 28.5.14, Bob Grieb bobgrieb@yahoo.com
>
> [PolySix] <PolySix@yahoogroups.com> a écrit :
>
>
>
>
>
>
>
> Objet: Re: [PolySix] EG and VCF not working after
> battery
>
> leakage
>
>
>
> À: "PolySix@yahoogroups.com"
>
> <PolySix@yahoogroups.com>
>
>
>
> Date: Mercredi 28 mai 2014, 2h09
>
>
>
>
>
>
>
>
>
>
>
> See if
>
>
>
> these functions can be controlled correctly when using
>
>
>
> patchesin
>
>
>
> memory. If so, then the output from the CPU to the
>
> analog
>
>
>
> circuitsis
>
>
>
> OK. Then you have a problem with reading the
>
>
>
> controls.But
>
>
>
> if the sound is always the same with all programs, then
>
> the
>
>
>
>
>
>
>
> output
>
>
>
> circuit is bad and maybe t is reading from the pots
>
>
>
> OK.Did
>
>
>
> you try the DAC calibration test in the manual? It
>
> would
>
>
>
> be helpfulto
>
>
>
> know if that is working OK. Just the part where you
> try
>
> to
>
>
>
> get the
>
>
>
> two
>
>
>
> LEDs to light up.
>
>
>
>
>
>
>
> Bob
>
>
>
>
>
>
>
>
>
>
>
> From:
>
>
>
> "phil0065@yahoo.fr [PolySix]"
>
>
>
> <PolySix@yahoogroups.com>
>
>
>
> To:
>
>
>
> PolySix@yahoogroups.com
>
>
>
> Sent: Tuesday, May 27,
>
>
>
> 2014 6:02 PM
>
>
>
> Subject: [PolySix] EG
>
>
>
> and VCF not
>
>
>
> working after battery leakage
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Bonjour !I am
>
>
>
> French
>
>
>
> and happy to join this group of Polysix owner. My old
>
>
>
> Polysix bought back in
>
>
>
> 1983 has been sleeping in the attic since 1990, until I
>
> have
>
>
>
> returned back now to
>
>
>
> my first love. Unfortunately I have discovered the
>
> battery
>
>
>
> leakage problem !
>
>
>
> So I did
>
>
>
> the standard procedure (like many)Spend a
>
>
>
> lot of time checking the lines on KLM-367 with plenty
> of
>
> leds on at start
>
>
>
> up.. Browse internet for hours (discover service
>
>
>
> manual, old crown, etc)…, change IC
>
>
>
> 30 & 31 … recheck continuity, still few leds
>
>
>
> on..Recheck again, change all set of
>
>
>
> panel switches (vintage planet)..4 leds on... Bank B
> not
>
>
>
> working...Check
>
>
>
> lines again, to get finally only leds A1
>
>
>
> on start up. Great !
>
>
>
> Unfortunately sound
>
>
>
> is not OK.
>
>
>
> Tune seems
>
>
>
> OK,
>
>
>
> 6 voices are OK, voltages from power board are OK (15V,
>
> 5V
>
>
>
> -5V and -15V) all pots
>
>
>
> and switches seem to work except the 4x EG and 4x VCF
>
> pots
>
>
>
> which are not
>
>
>
> active! I think at
>
>
>
> this stage it is useless to do the calibration
> procedure.
>
> Is
>
>
>
> there some indications,
>
>
>
> checking to start with to define if it is still a
>
>
>
> line/continuity problem or if electronic parts (IC,
>
> diode..)
>
>
>
> should be changed.
>
>
>
> Thanks in
>
>
>
> advance for your help
>
>
>
>
>
>
>
>
>
>
>
> Phil
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
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Re: [PolySix] EG and VCF not working after battery leakage

2014-05-29 by Bob Grieb


Phil,

     I was not clear before.   When in the DAC calibration mode, if
you turn the cutoff, does one of the lit LED's move?  (Not VR6 and VR7)
If so, that would tend to imply that the front panel reading of the cutoff
pot is OK.   It's true that the corrosion can travel up that black wire.
I replaced the wire on mine with another thick one.  16 gauge, I think.

    Also, if you are able to reload patches from cassette (or computer
audio port) and the EG and filter are still not working when you change
patches, that will indicate that it's from the CPU to the outputs, and
not the front panel reading.

      Bob

   

From: "Johannes Hausensteiner johannes@eclipso.at [PolySix]" <PolySix@yahoogroups.com>
To: PolySix@yahoogroups.com
Sent: Thursday, May 29, 2014 8:05 AM
Subject: Re: [PolySix] EG and VCF not working after battery leakage

 
Hi,

Most probably IC1 on KLM-370 (the 4051 analog mux) is dead. I had this
before; the leaked battery acid crawls along the thick black ground wire
up to KLM-370 and continues its destructive work there. Replace that
black wire as well.

Good luck!

Johannes

On 29.05.2014 13:34, Bob Grieb bobgrieb@yahoo.com [PolySix] wrote:
>
>
>
> Hi,
>
> So it seems that all of those connections are OK. Please check the
> IC23 connections next. P23 from IC22 to IC23-12,13,8, and the other
> connections on IC23 which you can see on the schematic. I am assuming
> that you do not have an oscilloscope, right?
>
> You say you have 13.56 volts at IC10-1 That's interesting, as
> IC18 outputs should range from -5 to +5 only. Does IC10 have -15
> on pin 4? Does IC18 have +5 on pin 16 and -5 on pin 7?
>
> Bob
>
> ----------------------------------------------------------
> *From:* "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
> *To:* PolySix@yahoogroups.com
> *Sent:* Thursday, May 29, 2014 4:47 AM
> *Subject:* Re: [PolySix] EG and VCF not working after battery leakage
>
> Looking at the klm367 schematic, I understand now your point with the
> connections between pins and signal P20, P21 and P22 but I had some
> diffuculty to cross link that information with the PCB drawing... until
> I realize that i was counting incorrectly the pins while I did know that
> it was from top right then CCW
> Do what I say, not what I do... I was correct for top side numbers but
> reverse for the bottom side i.e i did restart with 9 below 1... Stupid!
>
> So now I do have the following:
>
> P22 IC18-9 IC19-9 and IC22-23 => OK
> P21 IC18-10 IC19-10 and IC22-22 => OK
> P20 IC18-11 IC19-11 and IC22-21 => OK
> INH IC19-6 and IC23-10 => OK
> "X" IC18-3 and IC19-3 and IC27-1 =>OK
>
> I did recheck my previous post to correct them in light of my wrong pin
> counting
>
> 1) I did the DAC calib again and turning VR6 CCW => from led 8 to led 7
> 6 then 5, while turning VR7 CCW from led 8 to 7 then 6
> OK
>
> 2) pin 3 of IC18 and pin 1 of IC27, OK
> OK
>
> 3) pin 6 of IC18 and IC23-4. OK
> OK
>
> 4) pins 9,10 and 11 of IC18 and 19 should be connected to each other and
> to IC22 ?
>
> UPDATED: Wrong comment see above!
>
> 5) With power on, you should be able to vary a front panel
> control,such as filter cutoff, and see IC7 pin 7 change voltage as you
> do it (in manual mode).
>
> 3.177V => 3.120V cut off from 10 to 0 with all controls at normal setting
>
> UPDATED: Luckily correct, I did measure in fact pin 6 but it is strapped
> to pin 7...
>
> 6) when you select different patches, you should see the attack at
> IC10-1decay
>
> => On IC 10-1 no change always 13.56V
>
> UPDATED: Correct measurement
>
> 7) Decay at IC10-7 ?
>
> =>slight variation between patches. In manual mode and normal setting
> with decay control from 0 to 10 => 3.240V to 3.346V
>
> UPDATED: Again Luckily correct, I did measure in fact pin 6 but it is
> strapped to pin 7...
>
> I apologize for my mistake and thanks again for your patience and your
> support.
> Phil
>
> --------------------------------------------
> En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com [PolySix]
> <PolySix@yahoogroups.com> a écrit :
>
> Objet: Re: [PolySix] EG and VCF not working after battery leakage
> À: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
> Date: Jeudi 29 mai 2014, 3h28
>
>
> These should be
> connected:
> IC18-9 IC19-9 and IC22-23 this
> is signal "P22"
> IC18-10 IC19-10 and IC22-22
> this is signal
> "P21"
> IC18-11 IC19-11 and IC22-21
> this is signal "P20"
> IC19-6 and
> IC23-10
> Also, IC18-3 must connect to
> IC19-3 as well as to IC27-1 which you checked already.
>
> You may want to download the
> service manual as it is available forfree on the web, and see the
> schematic for KLM-367.
> If IC18 and IC19 are not
> connected properly, the control voltages
> won't work
> correctly.
> Please ignore IC22 pins 5, 19,and
> 35. They are not related to
> this discussion. We are
> checking A B C and INH signals to IC18 and
> IC19.
> Bob
>
>
>
> From: "Phil65
> phil0065@yahoo.fr [PolySix]"
> <PolySix@yahoogroups.com>
> To:
> PolySix@yahoogroups.com
> Sent: Wednesday, May
> 28, 2014 7:55 PM
>
> Subject: Re: [PolySix]
> EG and VCF not working after battery leakage
>
>
>
>
>
>
>
>
>
>
>
>
> Hi Bob,
>
> You are really helpfull. Merci !
>
>
>
> 1) I did the DAC calib again and turning VR6 CCW => from
> led 8 to led 7 6 then 5, while turning VR7 CCW from led 8
> to 7 then 6
>
> 2) pin 3 of IC18 and pin 1 of IC27, OK
>
> 3) pin 6 of IC18 and IC23-4. OK
>
> 4) pins 9,10 and 11 of IC18 and 19 should be connected to
> each other and to IC22 ?
>
> It seems I have a problem here. I found only IC18-9 +
> IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected together.
> Nothing between IC18-10 (IC18-11) with any pin of IC19 or
> IC22 ??
>
> Shall I strap IC18-9 + 10 + 11
>
>
>
> 5) With power on, you should be able to vary a front
> panel
>
> control,such as filter cutoff, and see IC7 pin 7 change
> voltage as you
>
> do it (in manual mode).
>
>
>
> 3.177V => 3.120V cut off from 10 to 0 with all controls
> at normal setting
>
>
>
>
>
> 6) when you select different patches, you should see the
> attack at IC10-1decay
>
>
>
> => On IC 10-1 no change always 13.56V
>
>
>
> 7) Decay at IC10-7 ?
>
>
>
> =>slight variation between patches. In manual mode and
> normal setting with decay control from 0 to 10 => 3.240V
> to 3.346V
>
>
>
> Thanks for your help, really appreciated !
>
> Phil
>
>
>
> --------------------------------------------
>
> En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com
> [PolySix] <PolySix@yahoogroups.com> a écrit :
>
>
>
> Objet: Re: [PolySix] EG and VCF not working after battery
> leakage
>
> À: "PolySix@yahoogroups.com"
> <PolySix@yahoogroups.com>
>
> Date: Jeudi 29 mai 2014, 0h21
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Hi Phil,
>
>
>
> If you are seeing LEDs 1 and 8 in DAC calibration mode,
> that
>
> impliesthat
>
> the DAC and the input muxes are working. Another
> thing
>
> to try -
>
> in
>
> the DAC calibration test mode, turn the two controls
> that
>
> you were supposedto
>
> set for this test, and you should see the LED's
>
> change.
>
>
>
> Don't worry about the click noise test for
>
> now.
>
>
>
> The voltage demux for controlling the EG and the VCF is
>
> mostlyIC18
>
> (4051). I would check with the ohmmeter that you
> have
>
> good connections(with
>
> the power off, of course) between pin 3 of IC18 and pin 1
> of
>
> IC27, and between
>
> pin
>
> 6 of IC18 and IC23-4. Also, pins 9,10 and 11 of IC18
> and
>
> 19 should be connectedto
>
> each other and to IC22.
>
>
>
>
>
> With power on, you should be able to vary a front panel
>
> control,such
>
> as filter cutoff, and see IC7 pin 7 change voltage as
> you
>
> do it (in manual
>
> mode).
>
> And when you select different patches, you should see
> the
>
> attack at IC10-1decay
>
> at IC10-7, etc changing with different patches. Be
> careful
>
> when probing with
>
> the
>
> power on not to short anything or you can damage chips in
> an
>
> instant. Use the gndtest
>
> pt for the meter black or negative lead.
>
>
>
>
>
>
>
> Tell us what you measure at these points in the circuit
> and
>
> if they vary with the
>
> corresponding
>
> front panel control in manual mode, or when you change
>
> patches.
>
>
>
> Bob
>
>
>
>
>
> From:
>
> "Phil65 phil0065@yahoo.fr [PolySix]"
>
> <PolySix@yahoogroups.com>
>
> To:
>
> PolySix@yahoogroups.com
>
> Sent: Wednesday, May
>
> 28, 2014 6:05 PM
>
> Subject: Re: [PolySix]
>
> EG and VCF not working after battery leakage
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Thanks Bob for your quick answer !
>
>
>
>
>
>
>
> Seems that my patch looses "EG" from memory. I
>
> have no sound unless I put the VCA switch from EG back
> to
>
> "square" again to get some sound.
>
>
>
> Not sure to keep the bank memory even when polysix is
> still
>
> on.
>
>
>
>
>
>
>
> I did the procedure and it passes directly. Here a quick
>
> summary:
>
>
>
> *dummy 56 ohm => all leds on
>
>
>
> *remove resistance => A1 leds
>
>
>
> *SW1 in test mode and tape switch to enable => Only
> leds
>
> 1+8 on
>
>
>
> * SW1 back to normal => still leds 1+8
>
>
>
> * "7 ) confirm that output DC click noise is within
> 6V
>
> p-p when power is switched off" => sorry I
> don't
>
> understand precisely what to do/ measure?
>
>
>
> * Power on again => A1 leds on.
>
>
>
>
>
>
>
> Thanks for your support
>
>
>
> Phil
>
>
>
>
>
>
>
> --------------------------------------------
>
>
>
> En date de : Mer 28.5.14, Bob Grieb bobgrieb@yahoo.com
>
> [PolySix] <PolySix@yahoogroups.com> a écrit :
>
>
>
>
>
>
>
> Objet: Re: [PolySix] EG and VCF not working after
> battery
>
> leakage
>
>
>
> À: "PolySix@yahoogroups.com"
>
> <PolySix@yahoogroups.com>
>
>
>
> Date: Mercredi 28 mai 2014, 2h09
>
>
>
>
>
>
>
>
>
>
>
> See if
>
>
>
> these functions can be controlled correctly when using
>
>
>
> patchesin
>
>
>
> memory. If so, then the output from the CPU to the
>
> analog
>
>
>
> circuitsis
>
>
>
> OK. Then you have a problem with reading the
>
>
>
> controls.But
>
>
>
> if the sound is always the same with all programs, then
>
> the
>
>
>
>
>
>
>
> output
>
>
>
> circuit is bad and maybe t is reading from the pots
>
>
>
> OK.Did
>
>
>
> you try the DAC calibration test in the manual? It
>
> would
>
>
>
> be helpfulto
>
>
>
> know if that is working OK. Just the part where you
> try
>
> to
>
>
>
> get the
>
>
>
> two
>
>
>
> LEDs to light up.
>
>
>
>
>
>
>
> Bob
>
>
>
>
>
>
>
>
>
>
>
> From:
>
>
>
> "phil0065@yahoo.fr [PolySix]"
>
>
>
> <PolySix@yahoogroups.com>
>
>
>
> To:
>
>
>
> PolySix@yahoogroups.com
>
>
>
> Sent: Tuesday, May 27,
>
>
>
> 2014 6:02 PM
>
>
>
> Subject: [PolySix] EG
>
>
>
> and VCF not
>
>
>
> working after battery leakage
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Bonjour !I am
>
>
>
> French
>
>
>
> and happy to join this group of Polysix owner. My old
>
>
>
> Polysix bought back in
>
>
>
> 1983 has been sleeping in the attic since 1990, until I
>
> have
>
>
>
> returned back now to
>
>
>
> my first love. Unfortunately I have discovered the
>
> battery
>
>
>
> leakage problem !
>
>
>
> So I did
>
>
>
> the standard procedure (like many)Spend a
>
>
>
> lot of time checking the lines on KLM-367 with plenty
> of
>
> leds on at start
>
>
>
> up.. Browse internet for hours (discover service
>
>
>
> manual, old crown, etc)…, change IC
>
>
>
> 30 & 31 … recheck continuity, still few leds
>
>
>
> on..Recheck again, change all set of
>
>
>
> panel switches (vintage planet)..4 leds on... Bank B
> not
>
>
>
> working...Check
>
>
>
> lines again, to get finally only leds A1
>
>
>
> on start up. Great !
>
>
>
> Unfortunately sound
>
>
>
> is not OK.
>
>
>
> Tune seems
>
>
>
> OK,
>
>
>
> 6 voices are OK, voltages from power board are OK (15V,
>
> 5V
>
>
>
> -5V and -15V) all pots
>
>
>
> and switches seem to work except the 4x EG and 4x VCF
>
> pots
>
>
>
> which are not
>
>
>
> active! I think at
>
>
>
> this stage it is useless to do the calibration
> procedure.
>
> Is
>
>
>
> there some indications,
>
>
>
> checking to start with to define if it is still a
>
>
>
> line/continuity problem or if electronic parts (IC,
>
> diode..)
>
>
>
> should be changed.
>
>
>
> Thanks in
>
>
>
> advance for your help
>
>
>
>
>
>
>
>
>
>
>
> Phil
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
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Re: [PolySix] EG and VCF not working after battery leakage

2014-05-29 by Bob Grieb


Sorry for the multiple emails.  In DAC calibration mode,
you should be able to turn the cutoff and see the lit LED move from 5-8
as you turn it.   Likewise, you should be able to move the speed/intensity pot
and see the other lit LED move from 1-4.  

Bob


From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To: PolySix@yahoogroups.com
Sent: Thursday, May 29, 2014 4:47 AM
Subject: Re: [PolySix] EG and VCF not working after battery leakage

 
Looking at the klm367 schematic, I understand now your point with the connections between pins and signal P20, P21 and P22 but I had some diffuculty to cross link that information with the PCB drawing... until I realize that i was counting incorrectly the pins while I did know that it was from top right then CCW
Do what I say, not what I do... I was correct for top side numbers but reverse for the bottom side i.e i did restart with 9 below 1... Stupid!

So now I do have the following:

P22 IC18-9 IC19-9 and IC22-23  => OK
P21 IC18-10 IC19-10 and IC22-22 => OK
P20 IC18-11 IC19-11 and IC22-21  => OK
INH IC19-6 and IC23-10 => OK
"X" IC18-3 and IC19-3 and IC27-1 =>OK

I did recheck my previous post to correct them in light of my wrong pin counting

1) I did the DAC calib again and turning VR6 CCW => from led 8 to led 7 6 then 5, while turning VR7 CCW from led 8 to 7 then 6
OK

2) pin 3 of IC18 and pin 1 of IC27, OK
OK

3) pin 6 of IC18 and IC23-4. OK
OK

4) pins 9,10 and 11 of IC18 and 19 should be connected to each other and to IC22 ?

UPDATED: Wrong comment see above!

5) With power on, you should be able to vary a front panel
control,such as filter cutoff, and see IC7 pin 7 change voltage as you
do it (in manual mode).

3.177V => 3.120V cut off from 10 to 0 with all controls at normal setting

UPDATED: Luckily correct, I did measure in fact pin 6 but it is strapped to pin 7...

6) when you select different patches, you should see the attack at IC10-1decay

=> On IC 10-1 no change always 13.56V

UPDATED: Correct measurement

7) Decay at IC10-7 ?

=>slight variation between patches. In manual mode and normal setting with decay control from 0 to 10 => 3.240V to 3.346V

UPDATED: Again Luckily correct, I did measure in fact pin 6 but it is strapped to pin 7...

I apologize for my mistake and thanks again for your patience and your support.
Phil

--------------------------------------------
En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com [PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Jeudi 29 mai 2014, 3h28


These should be
connected:
IC18-9 IC19-9 and IC22-23  this
is signal "P22"
IC18-10 IC19-10 and IC22-22 
this is signal
"P21"
IC18-11 IC19-11 and IC22-21 
this is signal "P20"
IC19-6 and
IC23-10
Also, IC18-3 must connect to
IC19-3 as well as to IC27-1 which you checked already.

You may want to download the
service manual as it is available forfree on the web, and see the
schematic for KLM-367.
If IC18 and IC19 are not
connected properly, the control voltages
won't work
correctly.
Please ignore IC22 pins 5, 19,and
35.    They are not related to
this discussion.  We are
checking A B C and INH signals to IC18 and
IC19.
   Bob



From: "Phil65
phil0065@yahoo.fr [PolySix]"
<PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Wednesday, May
28, 2014 7:55 PM

Subject: Re: [PolySix]
EG and VCF not working after battery leakage


 









Hi Bob,

You are really helpfull. Merci !



1) I did the DAC calib again and turning VR6 CCW => from
led 8 to led 7 6 then 5, while turning VR7 CCW from led 8
to 7 then 6

2) pin 3 of IC18 and pin 1 of IC27, OK

3) pin 6 of IC18 and IC23-4.  OK

4) pins 9,10 and 11 of IC18 and 19 should be connected to
each other and to IC22 ?

  It seems I have a problem here. I found only IC18-9 +
IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected together.
Nothing between IC18-10 (IC18-11) with any pin of IC19 or
IC22 ??

Shall I strap IC18-9 + 10 + 11



5) With power on, you should be able to vary a front
panel

control,such as filter cutoff, and see IC7 pin 7 change
voltage as you

do it (in manual mode).



3.177V => 3.120V cut off from 10 to 0 with all controls
at normal setting



  

6) when you select different patches, you should see the
attack at IC10-1decay



=> On IC 10-1 no change always 13.56V



7) Decay at IC10-7 ?



=>slight variation between patches. In manual mode and
normal setting with decay control from 0 to 10 => 3.240V
to 3.346V



Thanks for your help, really appreciated !

Phil



--------------------------------------------

En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com
[PolySix] <PolySix@yahoogroups.com> a écrit :



Objet: Re: [PolySix] EG and VCF not working after battery
leakage

À: "PolySix@yahoogroups.com"
<PolySix@yahoogroups.com>

Date: Jeudi 29 mai 2014, 0h21





 



















Hi Phil,

    

If you are seeing LEDs 1 and 8 in DAC calibration mode,
that

impliesthat

the DAC and the input muxes are working.   Another
thing

to try -

in

the DAC calibration test mode, turn the two controls
that

you were supposedto

set for this test, and you should see the LED's

change.

   

Don't worry about the click noise test for

now.

   

The voltage demux for controlling the EG and the VCF is

mostlyIC18

(4051).   I would check with the ohmmeter that you
have

good connections(with

the power off, of course) between pin 3 of IC18 and pin 1
of

IC27, and between

pin

6 of IC18 and IC23-4.  Also, pins 9,10 and 11 of IC18
and

19 should be connectedto

each other and to IC22.  



   

With power on, you should be able to vary a front panel

control,such

as filter cutoff, and see IC7 pin 7 change voltage as
you

do it (in manual

mode).  

And when you select different patches, you should see
the

attack at IC10-1decay

at IC10-7, etc changing with different patches.  Be
careful

when probing with

the

power on not to short anything or you can damage chips in
an

instant.  Use the gndtest

pt for the meter black or negative lead.





   

Tell us what you measure at these points in the circuit
and

if they vary with the

corresponding

front panel control in manual mode, or when you change

patches.

   

Bob





From:

"Phil65 phil0065@yahoo.fr [PolySix]"

<PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Wednesday, May

28, 2014 6:05 PM

Subject: Re: [PolySix]

EG and VCF not working after battery leakage





 



















Thanks Bob for your quick answer !







Seems that my patch looses "EG" from memory. I

have no sound unless I put the VCA switch from EG back
to

"square" again to get some sound.



Not sure to keep the bank memory even when polysix is
still

on.







I did the procedure and it passes directly. Here a quick

summary:



*dummy 56 ohm => all leds on



*remove resistance => A1 leds



*SW1 in test mode and tape switch to enable => Only
leds

1+8 on



* SW1 back to normal => still leds 1+8



* "7 ) confirm that output DC click noise is within
6V

p-p when power is switched off" => sorry I
don't

understand precisely what to do/ measure?



* Power on again => A1 leds on.







Thanks for your support



Phil







--------------------------------------------



En date de : Mer 28.5.14, Bob Grieb bobgrieb@yahoo.com

[PolySix] <PolySix@yahoogroups.com> a écrit :







Objet: Re: [PolySix] EG and VCF not working after
battery

leakage



À: "PolySix@yahoogroups.com"

<PolySix@yahoogroups.com>



Date: Mercredi 28 mai 2014, 2h09











See if



these functions can be controlled correctly when using



patchesin



memory.  If so, then the output from the CPU to the

analog



circuitsis



OK.   Then you have a problem with reading the



controls.But



if the sound is always the same with all programs, then

the







output



circuit is bad and maybe t is reading from the pots



OK.Did



you try the DAC calibration test in the manual?  It

would



be helpfulto



know if that is working OK.  Just the part where you
try

to



get the



two



LEDs to light up.



 



Bob











From:



"phil0065@yahoo.fr [PolySix]"



<PolySix@yahoogroups.com>



To:



PolySix@yahoogroups.com



Sent: Tuesday, May 27,



2014 6:02 PM



Subject: [PolySix] EG



and VCF not



working after battery leakage























Bonjour !I am



French



and happy to join this group of Polysix owner. My old



Polysix bought back in



1983 has been sleeping in the attic since 1990, until I

have



returned back now to



my first love. Unfortunately I have discovered the

battery



leakage problem !



So I did



the standard procedure (like many)Spend a



lot of time checking the lines on KLM-367 with plenty
of

leds on at start



up.. Browse internet for hours (discover service



manual, old crown, etc)…, change IC



30 & 31 … recheck continuity, still few leds



on..Recheck again, change all set of



panel switches (vintage planet)..4 leds on... Bank B
not



working...Check



lines again, to get finally only leds A1



on start up. Great !



Unfortunately sound



is not OK.



Tune seems



OK,



6 voices are OK, voltages from power board are OK (15V,

5V



-5V and -15V) all pots



and switches seem to work except the 4x EG and 4x VCF

pots



which are not



active! I think at



this stage it is useless to do the calibration
procedure.

Is



there some indications,



checking to start with to define if it is still a



line/continuity problem or if electronic parts (IC,

diode..)



should be changed.



Thanks in



advance for your help











Phil



























































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Re: [PolySix] EG and VCF not working after battery leakage

2014-05-30 by Phil65

Thanks Bob and Johannes

I am off for the week end with family, but managed to take only the KLM 367A board and VM (shh!, don't tell my wife she doesn't know....)
I have checked all connections on IC23 and are OK. I will update on voltage on Sunday night..

Also I have managed to get a USB oscillo (data acquisition board) with dedicated software (tracerDAQ). Precisely:
http://www.mccdaq.com/usb-data-acquisition/USB-1208FS.aspx

much better than nothing, so I should be equipped for the next stage... (still in learning phase anyway !)
Thanks for your support
Phil

--------------------------------------------
En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com [PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Jeudi 29 mai 2014, 14h49


 










Sorry for
the multiple emails.  In DAC calibration
mode,you
should be able to turn the cutoff and see the lit LED move
from 5-8as
you turn it.   Likewise, you should be able to move the
speed/intensity potand
see the other lit LED move from 1-4.  
Bob



From:
"Phil65 phil0065@yahoo.fr [PolySix]"
<PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Thursday, May 29,
2014 4:47 AM
Subject: Re: [PolySix]
EG and VCF not working after battery leakage


 









Looking at the klm367 schematic, I understand now
your point with the connections between pins and signal P20,
P21 and P22 but I had some diffuculty to cross link that
information with the PCB drawing... until I realize that i
was counting incorrectly the pins while I did know that it
was from top right then CCW

Do what I say, not what I do... I was correct for top side
numbers but reverse for the bottom side i.e i did restart
with 9 below 1... Stupid!



So now I do have the following:



P22 IC18-9 IC19-9 and IC22-23  => OK

P21 IC18-10 IC19-10 and IC22-22 => OK

P20 IC18-11 IC19-11 and IC22-21  => OK

INH IC19-6 and IC23-10 => OK

"X" IC18-3 and IC19-3 and IC27-1
=>OK



I did recheck my previous post to correct them in light of
my wrong pin counting



1) I did the DAC calib again and turning VR6 CCW => from
led 8 to led 7 6 then 5, while turning VR7 CCW from led 8 to
7 then 6

OK



2) pin 3 of IC18 and pin 1 of IC27, OK

OK



3) pin 6 of IC18 and IC23-4. OK

OK



4) pins 9,10 and 11 of IC18 and 19 should be connected to
each other and to IC22 ?



UPDATED: Wrong comment see above!



5) With power on, you should be able to vary a front
panel

control,such as filter cutoff, and see IC7 pin 7 change
voltage as you

do it (in manual mode).



3.177V => 3.120V cut off from 10 to 0 with all controls
at normal setting



UPDATED: Luckily correct, I did measure in fact pin 6 but it
is strapped to pin 7...



6) when you select different patches, you should see the
attack at IC10-1decay



=> On IC 10-1 no change always 13.56V



UPDATED: Correct measurement



7) Decay at IC10-7 ?



=>slight variation between patches. In manual mode and
normal setting with decay control from 0 to 10 => 3.240V
to 3.346V



UPDATED: Again Luckily correct, I did measure in fact pin 6
but it is strapped to pin 7...



I apologize for my mistake and thanks again for your
patience and your support.

Phil



--------------------------------------------

En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com
[PolySix] <PolySix@yahoogroups.com> a écrit :



Objet: Re: [PolySix] EG and VCF not working after battery
leakage

À: "PolySix@yahoogroups.com"
<PolySix@yahoogroups.com>

Date: Jeudi 29 mai 2014, 3h28





These should be

connected:

IC18-9 IC19-9 and IC22-23  this

is signal "P22"

IC18-10 IC19-10 and IC22-22 

this is signal

"P21"

IC18-11 IC19-11 and IC22-21 

this is signal "P20"

IC19-6 and

IC23-10

Also, IC18-3 must connect to

IC19-3 as well as to IC27-1 which you checked already.



You may want to download the

service manual as it is available forfree on the web, and
see the

schematic for KLM-367.

If IC18 and IC19 are not

connected properly, the control voltages

won't work

correctly.

Please ignore IC22 pins 5, 19,and

35.    They are not related to

this discussion.  We are

checking A B C and INH signals to IC18 and

IC19.

   Bob







From: "Phil65

phil0065@yahoo.fr [PolySix]"

<PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Wednesday, May

28, 2014 7:55 PM



Subject: Re: [PolySix]

EG and VCF not working after battery leakage





 



















Hi Bob,



You are really helpfull. Merci !







1) I did the DAC calib again and turning VR6 CCW =>
from

led 8 to led 7 6 then 5, while turning VR7 CCW from led
8

to 7 then 6



2) pin 3 of IC18 and pin 1 of IC27, OK



3) pin 6 of IC18 and IC23-4.  OK



4) pins 9,10 and 11 of IC18 and 19 should be connected to


each other and to IC22 ?



  It seems I have a problem here. I found only IC18-9 +

IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected
together.

Nothing between IC18-10 (IC18-11) with any pin of IC19
or

IC22 ??



Shall I strap IC18-9 + 10 + 11







5) With power on, you should be able to vary a front

panel



control,such as filter cutoff, and see IC7 pin 7
change

voltage as you



do it (in manual mode).







3.177V => 3.120V cut off from 10 to 0 with all
controls

at normal setting







  



6) when you select different patches, you should see the


attack at IC10-1decay







=> On IC 10-1 no change always 13.56V







7) Decay at IC10-7 ?







=>slight variation between patches. In manual mode
and

normal setting with decay control from 0 to 10 =>
3.240V

to 3.346V







Thanks for your help, really appreciated !



Phil







--------------------------------------------



En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com

[PolySix] <PolySix@yahoogroups.com> a écrit :







Objet: Re: [PolySix] EG and VCF not working after
battery

leakage



À: "PolySix@yahoogroups.com"

<PolySix@yahoogroups.com>



Date: Jeudi 29 mai 2014, 0h21











 







































Hi Phil,



    



If you are seeing LEDs 1 and 8 in DAC calibration mode,

that



impliesthat



the DAC and the input muxes are working.   Another

thing



to try -



in



the DAC calibration test mode, turn the two controls

that



you were supposedto



set for this test, and you should see the LED's



change.



   



Don't worry about the click noise test for



now.



   



The voltage demux for controlling the EG and the VCF is



mostlyIC18



(4051).   I would check with the ohmmeter that you

have



good connections(with



the power off, of course) between pin 3 of IC18 and pin
1

of



IC27, and between



pin



6 of IC18 and IC23-4.  Also, pins 9,10 and 11 of IC18

and



19 should be connectedto



each other and to IC22.  







   



With power on, you should be able to vary a front panel



control,such



as filter cutoff, and see IC7 pin 7 change voltage as

you



do it (in manual



mode).  



And when you select different patches, you should see

the



attack at IC10-1decay



at IC10-7, etc changing with different patches.  Be

careful



when probing with



the



power on not to short anything or you can damage chips
in

an



instant.  Use the gndtest



pt for the meter black or negative lead.











   



Tell us what you measure at these points in the circuit

and



if they vary with the



corresponding



front panel control in manual mode, or when you change



patches.



   



Bob











From:



"Phil65 phil0065@yahoo.fr [PolySix]"



<PolySix@yahoogroups.com>



To:



PolySix@yahoogroups.com



Sent: Wednesday, May



28, 2014 6:05 PM



Subject: Re: [PolySix]



EG and VCF not working after battery leakage











 







































Thanks Bob for your quick answer !















Seems that my patch looses "EG" from memory.
I



have no sound unless I put the VCA switch from EG back

to



"square" again to get some sound.







Not sure to keep the bank memory even when polysix is

still



on.















I did the procedure and it passes directly. Here a
quick



summary:







*dummy 56 ohm => all leds on







*remove resistance => A1 leds







*SW1 in test mode and tape switch to enable => Only

leds



1+8 on







* SW1 back to normal => still leds 1+8







* "7 ) confirm that output DC click noise is
within

6V



p-p when power is switched off" => sorry I

don't



understand precisely what to do/ measure?







* Power on again => A1 leds on.















Thanks for your support







Phil















--------------------------------------------







En date de : Mer 28.5.14, Bob Grieb bobgrieb@yahoo.com



[PolySix] <PolySix@yahoogroups.com> a écrit :















Objet: Re: [PolySix] EG and VCF not working after

battery



leakage







À: "PolySix@yahoogroups.com"



<PolySix@yahoogroups.com>







Date: Mercredi 28 mai 2014, 2h09























See if







these functions can be controlled correctly when using







patchesin







memory.  If so, then the output from the CPU to the



analog







circuitsis







OK.   Then you have a problem with reading the







controls.But







if the sound is always the same with all programs,
then



the















output







circuit is bad and maybe t is reading from the pots







OK.Did







you try the DAC calibration test in the manual?  It



would







be helpfulto







know if that is working OK.  Just the part where you

try



to







get the







two







LEDs to light up.







 







Bob























From:







"phil0065@yahoo.fr [PolySix]"







<PolySix@yahoogroups.com>







To:







PolySix@yahoogroups.com







Sent: Tuesday, May 27,







2014 6:02 PM







Subject: [PolySix] EG







and VCF not







working after battery leakage















































Bonjour !I am







French







and happy to join this group of Polysix owner. My old







Polysix bought back in







1983 has been sleeping in the attic since 1990, until
I



have







returned back now to







my first love. Unfortunately I have discovered the



battery







leakage problem !







So I did







the standard procedure (like many)Spend a







lot of time checking the lines on KLM-367 with plenty

of



leds on at start







up.. Browse internet for hours (discover service







manual, old crown, etc)…, change IC







30 & 31 … recheck continuity, still few leds







on..Recheck again, change all set of







panel switches (vintage planet)..4 leds on... Bank B

not







working...Check







lines again, to get finally only leds A1







on start up. Great !







Unfortunately sound







is not OK.







Tune seems







OK,







6 voices are OK, voltages from power board are OK
(15V,



5V







-5V and -15V) all pots







and switches seem to work except the 4x EG and 4x VCF



pots







which are not







active! I think at







this stage it is useless to do the calibration

procedure.



Is







there some indications,







checking to start with to define if it is still a







line/continuity problem or if electronic parts (IC,



diode..)







should be changed.







Thanks in







advance for your help























Phil























































































































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Re: [PolySix] EG and VCF not working after battery leakage

2014-06-03 by Bob Grieb


Hi Phil,

   If you plan to use that USB DAC as an oscilloscope, I don't think
it will work very well.   It's more of a data sampler, than a scope, it seems.
It doesn't sample fast enough to show the waveforms in a processor-based
synth.   You need something with at least 10-20 MHz bandwidth, and really
at least 60 MHz would be much better.

     Bob

From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To: PolySix@yahoogroups.com
Sent: Friday, May 30, 2014 6:54 AM
Subject: Re: [PolySix] EG and VCF not working after battery leakage

 
Thanks Bob and Johannes

I am off for the week end with family, but managed to take only the KLM 367A board and VM (shh!, don't tell my wife she doesn't know....)
I have checked all connections on IC23 and are OK. I will update on voltage on Sunday night..

Also I have managed to get a USB oscillo (data acquisition board) with dedicated software (tracerDAQ). Precisely:
http://www.mccdaq.com/usb-data-acquisition/USB-1208FS.aspx

much better than nothing, so I should be equipped for the next stage... (still in learning phase anyway !)
Thanks for your support
Phil

--------------------------------------------
En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com [PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Jeudi 29 mai 2014, 14h49


 










Sorry for
the multiple emails.  In DAC calibration
mode,you
should be able to turn the cutoff and see the lit LED move
from 5-8as
you turn it.   Likewise, you should be able to move the
speed/intensity potand
see the other lit LED move from 1-4.  
Bob



From:
"Phil65 phil0065@yahoo.fr [PolySix]"
<PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Thursday, May 29,
2014 4:47 AM
Subject: Re: [PolySix]
EG and VCF not working after battery leakage


 









Looking at the klm367 schematic, I understand now
your point with the connections between pins and signal P20,
P21 and P22 but I had some diffuculty to cross link that
information with the PCB drawing... until I realize that i
was counting incorrectly the pins while I did know that it
was from top right then CCW

Do what I say, not what I do... I was correct for top side
numbers but reverse for the bottom side i.e i did restart
with 9 below 1... Stupid!



So now I do have the following:



P22 IC18-9 IC19-9 and IC22-23  => OK

P21 IC18-10 IC19-10 and IC22-22 => OK

P20 IC18-11 IC19-11 and IC22-21  => OK

INH IC19-6 and IC23-10 => OK

"X" IC18-3 and IC19-3 and IC27-1
=>OK



I did recheck my previous post to correct them in light of
my wrong pin counting



1) I did the DAC calib again and turning VR6 CCW => from
led 8 to led 7 6 then 5, while turning VR7 CCW from led 8 to
7 then 6

OK



2) pin 3 of IC18 and pin 1 of IC27, OK

OK



3) pin 6 of IC18 and IC23-4. OK

OK



4) pins 9,10 and 11 of IC18 and 19 should be connected to
each other and to IC22 ?



UPDATED: Wrong comment see above!



5) With power on, you should be able to vary a front
panel

control,such as filter cutoff, and see IC7 pin 7 change
voltage as you

do it (in manual mode).



3.177V => 3.120V cut off from 10 to 0 with all controls
at normal setting



UPDATED: Luckily correct, I did measure in fact pin 6 but it
is strapped to pin 7...



6) when you select different patches, you should see the
attack at IC10-1decay



=> On IC 10-1 no change always 13.56V



UPDATED: Correct measurement



7) Decay at IC10-7 ?



=>slight variation between patches. In manual mode and
normal setting with decay control from 0 to 10 => 3.240V
to 3.346V



UPDATED: Again Luckily correct, I did measure in fact pin 6
but it is strapped to pin 7...



I apologize for my mistake and thanks again for your
patience and your support.

Phil



--------------------------------------------

En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com
[PolySix] <PolySix@yahoogroups.com> a écrit :



Objet: Re: [PolySix] EG and VCF not working after battery
leakage

À: "PolySix@yahoogroups.com"
<PolySix@yahoogroups.com>

Date: Jeudi 29 mai 2014, 3h28





These should be

connected:

IC18-9 IC19-9 and IC22-23  this

is signal "P22"

IC18-10 IC19-10 and IC22-22 

this is signal

"P21"

IC18-11 IC19-11 and IC22-21 

this is signal "P20"

IC19-6 and

IC23-10

Also, IC18-3 must connect to

IC19-3 as well as to IC27-1 which you checked already.



You may want to download the

service manual as it is available forfree on the web, and
see the

schematic for KLM-367.

If IC18 and IC19 are not

connected properly, the control voltages

won't work

correctly.

Please ignore IC22 pins 5, 19,and

35.    They are not related to

this discussion.  We are

checking A B C and INH signals to IC18 and

IC19.

   Bob







From: "Phil65

phil0065@yahoo.fr [PolySix]"

<PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Wednesday, May

28, 2014 7:55 PM



Subject: Re: [PolySix]

EG and VCF not working after battery leakage





 



















Hi Bob,



You are really helpfull. Merci !







1) I did the DAC calib again and turning VR6 CCW =>
from

led 8 to led 7 6 then 5, while turning VR7 CCW from led
8

to 7 then 6



2) pin 3 of IC18 and pin 1 of IC27, OK



3) pin 6 of IC18 and IC23-4.  OK



4) pins 9,10 and 11 of IC18 and 19 should be connected to


each other and to IC22 ?



  It seems I have a problem here. I found only IC18-9 +

IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected
together.

Nothing between IC18-10 (IC18-11) with any pin of IC19
or

IC22 ??



Shall I strap IC18-9 + 10 + 11







5) With power on, you should be able to vary a front

panel



control,such as filter cutoff, and see IC7 pin 7
change

voltage as you



do it (in manual mode).







3.177V => 3.120V cut off from 10 to 0 with all
controls

at normal setting







  



6) when you select different patches, you should see the


attack at IC10-1decay







=> On IC 10-1 no change always 13.56V







7) Decay at IC10-7 ?







=>slight variation between patches. In manual mode
and

normal setting with decay control from 0 to 10 =>
3.240V

to 3.346V







Thanks for your help, really appreciated !



Phil







--------------------------------------------



En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com

[PolySix] <PolySix@yahoogroups.com> a écrit :







Objet: Re: [PolySix] EG and VCF not working after
battery

leakage



À: "PolySix@yahoogroups.com"

<PolySix@yahoogroups.com>



Date: Jeudi 29 mai 2014, 0h21











 







































Hi Phil,



    



If you are seeing LEDs 1 and 8 in DAC calibration mode,

that



impliesthat



the DAC and the input muxes are working.   Another

thing



to try -



in



the DAC calibration test mode, turn the two controls

that



you were supposedto



set for this test, and you should see the LED's



change.



   



Don't worry about the click noise test for



now.



   



The voltage demux for controlling the EG and the VCF is



mostlyIC18



(4051).   I would check with the ohmmeter that you

have



good connections(with



the power off, of course) between pin 3 of IC18 and pin
1

of



IC27, and between



pin



6 of IC18 and IC23-4.  Also, pins 9,10 and 11 of IC18

and



19 should be connectedto



each other and to IC22.  







   



With power on, you should be able to vary a front panel



control,such



as filter cutoff, and see IC7 pin 7 change voltage as

you



do it (in manual



mode).  



And when you select different patches, you should see

the



attack at IC10-1decay



at IC10-7, etc changing with different patches.  Be

careful



when probing with



the



power on not to short anything or you can damage chips
in

an



instant.  Use the gndtest



pt for the meter black or negative lead.











   



Tell us what you measure at these points in the circuit

and



if they vary with the



corresponding



front panel control in manual mode, or when you change



patches.



   



Bob











From:



"Phil65 phil0065@yahoo.fr [PolySix]"



<PolySix@yahoogroups.com>



To:



PolySix@yahoogroups.com



Sent: Wednesday, May



28, 2014 6:05 PM



Subject: Re: [PolySix]



EG and VCF not working after battery leakage











 







































Thanks Bob for your quick answer !















Seems that my patch looses "EG" from memory.
I



have no sound unless I put the VCA switch from EG back

to



"square" again to get some sound.







Not sure to keep the bank memory even when polysix is

still



on.















I did the procedure and it passes directly. Here a
quick



summary:







*dummy 56 ohm => all leds on







*remove resistance => A1 leds







*SW1 in test mode and tape switch to enable => Only

leds



1+8 on







* SW1 back to normal => still leds 1+8







* "7 ) confirm that output DC click noise is
within

6V



p-p when power is switched off" => sorry I

don't



understand precisely what to do/ measure?







* Power on again => A1 leds on.















Thanks for your support







Phil















--------------------------------------------







En date de : Mer 28.5.14, Bob Grieb bobgrieb@yahoo.com



[PolySix] <PolySix@yahoogroups.com> a écrit :















Objet: Re: [PolySix] EG and VCF not working after

battery



leakage







À: "PolySix@yahoogroups.com"



<PolySix@yahoogroups.com>







Date: Mercredi 28 mai 2014, 2h09























See if







these functions can be controlled correctly when using







patchesin







memory.  If so, then the output from the CPU to the



analog







circuitsis







OK.   Then you have a problem with reading the







controls.But







if the sound is always the same with all programs,
then



the















output







circuit is bad and maybe t is reading from the pots







OK.Did







you try the DAC calibration test in the manual?  It



would







be helpfulto







know if that is working OK.  Just the part where you

try



to







get the







two







LEDs to light up.







 







Bob























From:







"phil0065@yahoo.fr [PolySix]"







<PolySix@yahoogroups.com>







To:







PolySix@yahoogroups.com







Sent: Tuesday, May 27,







2014 6:02 PM







Subject: [PolySix] EG







and VCF not







working after battery leakage















































Bonjour !I am







French







and happy to join this group of Polysix owner. My old







Polysix bought back in







1983 has been sleeping in the attic since 1990, until
I



have







returned back now to







my first love. Unfortunately I have discovered the



battery







leakage problem !







So I did







the standard procedure (like many)Spend a







lot of time checking the lines on KLM-367 with plenty

of



leds on at start







up.. Browse internet for hours (discover service







manual, old crown, etc)…, change IC







30 & 31 … recheck continuity, still few leds







on..Recheck again, change all set of







panel switches (vintage planet)..4 leds on... Bank B

not







working...Check







lines again, to get finally only leds A1







on start up. Great !







Unfortunately sound







is not OK.







Tune seems







OK,







6 voices are OK, voltages from power board are OK
(15V,



5V







-5V and -15V) all pots







and switches seem to work except the 4x EG and 4x VCF



pots







which are not







active! I think at







this stage it is useless to do the calibration

procedure.



Is







there some indications,







checking to start with to define if it is still a







line/continuity problem or if electronic parts (IC,



diode..)







should be changed.







Thanks in







advance for your help























Phil























































































































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(Message over 64 KB, truncated)

SV: [PolySix] EG and VCF not working after battery leakage

2014-06-03 by Hans

Hi

 

From my own experience a scope based around a USB sound card they’re only useful up to approx. 5200Hz.

 

There are ways around this by implementing a simple sample and hold circuit to the input. But this circuit has to be synced with the ADC clock which complicate things. I’ve not investigated this further, but my guess this is how many low priced digital scopes is manufactured.

 

-hans

 

Fra: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com]
Sendt: 3. juni 2014 13:48
Til: PolySix@yahoogroups.com
Emne: Re: [PolySix] EG and VCF not working after battery leakage

 

 


Hi Phil,

 

   If you plan to use that USB DAC as an oscilloscope, I don't think

it will work very well.   It's more of a data sampler, than a scope, it seems.

It doesn't sample fast enough to show the waveforms in a processor-based

synth.   You need something with at least 10-20 MHz bandwidth, and really

at least 60 MHz would be much better.

 

     Bob

 

From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Friday, May 30, 2014 6:54 AM
Subject: Re: [PolySix] EG and VCF not working after battery leakage

 

 

Thanks Bob and Johannes

I am off for the week end with family, but managed to take only the KLM 367A board and VM (shh!, don't tell my wife she doesn't know....)
I have checked all connections on IC23 and are OK. I will update on voltage on Sunday night..

Also I have managed to get a USB oscillo (data acquisition board) with dedicated software (tracerDAQ).
Precisely:
http://www.mccdaq.com/usb-data-acquisition/USB-1208FS.aspx

much better than nothing, so I should be equipped for the next stage...
(still in learning phase anyway !)
Thanks for your support
Phil

--------------------------------------------
En date de : Jeu 29.5.14, Bob Grieb
bobgrieb@yahoo.com [PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "
PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Jeudi 29 mai 2014, 14h49


 










Sorry for
the multiple emails. 
In DAC calibration
mode,you
should be able to turn the cutoff and see the lit LED move
from 5-8as
you turn it.   Likewise, you should be able to move the
speed/intensity potand
see the other lit LED move from 1-4.  
Bob



From:
"Phil65
phil0065@yahoo.fr [PolySix]"
<
PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Thursday, May 29,
2014 4:47 AM
Subject: Re: [PolySix]
EG and VCF not working after battery leakage


 









Looking at the klm367 schematic, I understand now
your point with the connections between pins and signal P20,
P21 and P22 but I had some diffuculty to cross link that
information with the PCB drawing... until I realize that i
was counting incorrectly the pins while I did know that it
was from top right then CCW

Do what I say, not what I do...
I was correct for top side
numbers but reverse for the bottom side i.e i did restart
with 9 below 1... Stupid!



So now I do have the following:



P22 IC18-9 IC19-9 and IC22-23  => OK

P21 IC18-10 IC19-10 and IC22-22 => OK

P20 IC18-11 IC19-11 and IC22-21  => OK

INH IC19-6 and IC23-10 => OK

"X" IC18-3 and IC19-3 and IC27-1
=>OK



I did recheck my previous post to correct them in light of
my wrong pin counting



1) I did the DAC calib again and turning VR6 CCW => from
led 8 to led 7 6 then 5, while turning VR7 CCW from led 8 to
7 then 6

OK



2) pin 3 of IC18 and pin 1 of IC27, OK

OK



3) pin 6 of IC18 and IC23-4. OK

OK



4) pins 9,10 and 11 of IC18 and 19 should be connected to
each other and to IC22 ?



UPDATED: Wrong comment see above!



5) With power on, you should be able to vary a front
panel

control,such as filter cutoff, and see IC7 pin 7 change
voltage as you

do it (in manual mode).



3.177V => 3.120V cut off from 10 to 0 with all controls
at normal setting



UPDATED: Luckily correct, I did measure in fact pin 6 but it
is strapped to pin 7...



6) when you select different patches, you should see the
attack at IC10-1decay



=> On IC 10-1 no change always 13.56V



UPDATED: Correct measurement



7) Decay at IC10-7 ?



=>slight variation between patches. In manual mode and
normal setting with decay control from 0 to 10 => 3.240V
to 3.346V



UPDATED: Again Luckily correct, I did measure in fact pin 6
but it is strapped to pin 7...



I apologize for my mistake and thanks again for your
patience and your support.

Phil



--------------------------------------------

En date de : Jeu 29.5.14, Bob Grieb
bobgrieb@yahoo.com
[PolySix] <
PolySix@yahoogroups.com> a écrit :



Objet: Re: [PolySix] EG and VCF not working after battery
leakage

À: "
PolySix@yahoogroups.com"
<
PolySix@yahoogroups.com>

Date: Jeudi 29 mai 2014, 3h28





These should be

connected:

IC18-9 IC19-9 and IC22-23  this

is signal "P22"

IC18-10 IC19-10 and IC22-22 

this is signal

"P21"

IC18-11 IC19-11 and IC22-21 

this is signal "P20"

IC19-6 and

IC23-10

Also, IC18-3 must connect to

IC19-3 as well as to IC27-1 which you checked already.



You may want to download the

service manual as it is available forfree on the web, and
see the

schematic for KLM-367.

If IC18 and IC19 are not

connected properly, the control voltages

won't work

correctly.

Please ignore IC22 pins 5, 19,and

35.    They are not related to

this discussion.  We are

checking A B C and INH signals to IC18 and

IC19.

  
Bob







From: "Phil65

phil0065@yahoo.fr [PolySix]"

<
PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Wednesday, May

28, 2014 7:55 PM



Subject: Re: [PolySix]

EG and VCF not working after battery leakage





 



















Hi Bob,



You are really helpfull.
Merci !







1) I did the DAC calib again and turning VR6 CCW =>
from

led 8 to led 7 6 then 5, while turning VR7 CCW from led
8

to 7 then 6



2) pin 3 of IC18 and pin 1 of IC27, OK



3) pin 6 of IC18 and IC23-4.  OK



4) pins 9,10 and 11 of IC18 and 19 should be connected to


each other and to IC22 ?



  It seems I have a problem here. I found only IC18-9 +

IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected
together.

Nothing between IC18-10 (IC18-11) with any pin of IC19
or

IC22 ??



Shall I strap IC18-9 + 10 + 11







5) With power on, you should be able to vary a front

panel



control,such as filter cutoff, and see IC7 pin 7
change

voltage as you



do it (in manual mode).







3.177V => 3.120V cut off from 10 to 0 with all
controls

at normal setting







  



6) when you select different patches, you should see the


attack at IC10-1decay







=> On IC 10-1 no change always 13.56V







7) Decay at IC10-7 ?







=>slight variation between patches. In manual mode
and

normal setting with decay control from 0 to 10 =>
3.240V

to 3.346V







Thanks for your help, really appreciated !



Phil







--------------------------------------------



En date de : Jeu 29.5.14, Bob Grieb
bobgrieb@yahoo.com

[PolySix] <
PolySix@yahoogroups.com> a écrit :







Objet: Re: [PolySix] EG and VCF not working after
battery

leakage



À: "
PolySix@yahoogroups.com"

<
PolySix@yahoogroups.com>



Date: Jeudi 29 mai 2014, 0h21











 







































Hi Phil,



    



If you are seeing LEDs 1 and 8 in DAC calibration mode,

that



impliesthat



the DAC and the input muxes are working.  
Another

thing



to try -



in



the DAC calibration test mode, turn the two controls

that



you were supposedto



set for this test, and you should see the LED's



change.



   



Don't worry about the click noise test for



now.



   



The voltage demux for controlling the EG and the VCF is



mostlyIC18



(4051).   I would check with the ohmmeter that you

have



good connections(with



the power off, of course) between pin 3 of IC18 and pin
1

of



IC27, and between



pin



6 of IC18 and IC23-4.  Also, pins 9,10 and 11 of IC18

and



19 should be connectedto



each other and to IC22.  







   



With power on, you should be able to vary a front panel



control,such



as filter cutoff, and see IC7 pin 7 change voltage as

you



do it (in manual



mode).  



And when you select different patches, you should see

the



attack at IC10-1decay



at IC10-7, etc changing with different patches.  Be

careful



when probing with



the



power on not to short anything or you can damage chips
in

an



instant.  Use the gndtest



pt for the meter black or negative lead.











   



Tell us what you measure at these points in the circuit

and



if they vary with the



corresponding



front panel control in manual mode, or when you change



patches.



   



Bob











From:



"Phil65
phil0065@yahoo.fr [PolySix]"



<
PolySix@yahoogroups.com>



To:



PolySix@yahoogroups.com



Sent: Wednesday, May



28, 2014 6:05 PM



Subject: Re: [PolySix]



EG and VCF not working after battery leakage











 







































Thanks Bob for your quick answer !















Seems that my patch looses "EG" from memory.
I



have no sound unless I put the VCA switch from EG back

to



"square" again to get some sound.







Not sure to keep the bank memory even when polysix is

still



on.















I did the procedure and it passes directly. Here a
quick



summary:







*dummy 56 ohm => all leds on







*remove resistance => A1 leds







*SW1 in test mode and tape switch to enable => Only

leds



1+8 on







* SW1 back to normal => still leds 1+8







* "7 ) confirm that output DC click noise is
within

6V



p-p when power is switched off" => sorry I

don't



understand precisely what to do/ measure?







* Power on again => A1 leds on.















Thanks for your support







Phil















--------------------------------------------







En date de : Mer 28.5.14, Bob Grieb
bobgrieb@yahoo.com



[PolySix] <
PolySix@yahoogroups.com> a écrit :















Objet: Re: [PolySix] EG and VCF not working after

battery



leakage







À: "
PolySix@yahoogroups.com"



<
PolySix@yahoogroups.com>







Date: Mercredi 28 mai 2014, 2h09























See if







these functions can be controlled correctly when using







patchesin







memory. 
If so, then the output from the CPU to the



analog







circuitsis







OK.   Then you have a problem with reading the







controls.But







if the sound is always the same with all programs,
then



the















output







circuit is bad and maybe t is reading from the pots







OK.Did







you try the DAC calibration test in the manual?  It



would







be helpfulto







know if that is working OK.  Just the part where you

try



to







get the







two







LEDs to light up.







 







Bob























From:







"
phil0065@yahoo.fr [PolySix]"







<
PolySix@yahoogroups.com>







To:







PolySix@yahoogroups.com







Sent: Tuesday, May 27,







2014 6:02 PM







Subject: [PolySix] EG







and VCF not







working after battery leakage















































Bonjour !I am







French







and happy to join this group of Polysix owner.
My old







Polysix bought back in







1983 has been sleeping in the attic since 1990, until
I



have







returned back now to







my first love. Unfortunately I have discovered the



battery







leakage problem !







So I did







the standard procedure (like many)Spend a







lot of time checking the lines on KLM-367 with plenty

of



leds on at start







up.. Browse internet for hours (discover service







manual, old crown, etc)…, change IC







30 & 31 … recheck continuity, still few leds







on..Recheck again, change all set of







panel switches (vintage planet)..4 leds on... Bank B

not







working...Check







lines again, to get finally only leds A1







on start up. Great !







Unfortunately sound







is not OK.







Tune seems







OK,







6 voices are OK, voltages from power board are OK
(15V,



5V







-5V and -15V) all pots







and switches seem to work except the 4x EG and 4x VCF



pots







which are not







active! I think at







this stage it is useless to do the calibration

procedure.



Is







there some indications,







checking to start with to define if it is still a







line/continuity problem or if electronic parts (IC,



diode..)







should be changed.







Thanks in







advance for your help























Phil























































































































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Re: SV: [PolySix] EG and VCF not working after battery leakage

2014-06-03 by Phil65

Hi
My KLM 367 repairing may not be good enough as I realize on Sunday that after 5-10 minutes of warming I have additional leds along with A+1 (led 3 then C+3 are also flashing). Disappointing..
I spend many time rechecking the board without success. After some cool down, when I switch ON, only leds A1 are on but after some timeof warming  C + 3 are coming back plus a noisy sound. 

Please find also an update on the voltage:

Does IC10 have -15 on pin 4?   => -15V
Does IC18 have +5 on pin 16  and -5 on pin 7? => Yes  +5V and -5V

I have also recheck the DAC calib. 
Cut off set to 10 => led 1+8
Cut Off from 0-8 => led 1+5
 Speed intensity 0-6 => led 1+8
Speed intensity 7-10 => led 4+8
  
Today unfortunately I do not have access to a proper oscillo. I will check what I can do with this simple USB oscillo, but I did try already and manage to get for example the correct shape for the figure 2 in the adjustment procedure (20 msec). I will send a screen copy in a next mail
Thanks
Phil


Le Mardi 3 juin 2014 14h03, "'Hans' hr.public@lonningdal.net [PolySix]" <PolySix@yahoogroups.com> a écrit :


 
Hi
 
From my own experience a scope based around a USB sound card they’re only useful up to approx. 5200Hz.
 
There are ways around this by implementing a simple sample and hold circuit to the input. But this circuit has to be synced with the ADC clock which complicate things. I’ve not investigated this further, but my guess this is how many low priced digital scopes is manufactured.
 
-hans
 
Fra: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com]
Sendt: 3. juni 2014 13:48
Til: PolySix@yahoogroups.com
Emne: Re: [PolySix] EG and VCF not working after battery leakage
 
 

Hi Phil,
 
   If you plan to use that USB DAC as an oscilloscope, I don't think
it will work very well.   It's more of a data sampler, than a scope, it seems.
It doesn't sample fast enough to show the waveforms in a processor-based
synth.   You need something with at least 10-20 MHz bandwidth, and really
at least 60 MHz would be much better.
 
     Bob
 
From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Friday, May 30, 2014 6:54 AM
Subject: Re: [PolySix] EG and VCF not working after battery leakage
 
 
Thanks Bob and Johannes

I am off for the week end with family, but managed to take only the KLM 367A board and VM (shh!, don't tell my wife she doesn't know....)
I have checked all connections on IC23 and are OK. I will update on voltage on Sunday night..

Also I have managed to get a USB oscillo (data acquisition board) with dedicated software (tracerDAQ).
Precisely:
http://www.mccdaq.com/usb-data-acquisition/USB-1208FS.aspx

much better than nothing, so I should be equipped for the next stage...
(still in learning phase anyway !)
Thanks for your support
Phil

--------------------------------------------
En date de : Jeu 29.5.14, Bob Grieb
bobgrieb@yahoo.com [PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "
PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Jeudi 29 mai 2014, 14h49


 










Sorry for
the multiple emails. 
In DAC calibration
mode,you
should be able to turn the cutoff and see the lit LED move
from 5-8as
you turn it.   Likewise, you should be able to move the
speed/intensity potand
see the other lit LED move from 1-4.  
Bob



From:
"Phil65
phil0065@yahoo.fr [PolySix]"
<
PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Thursday, May 29,
2014 4:47 AM
Subject: Re: [PolySix]
EG and VCF not working after battery leakage


 









Looking at the klm367 schematic, I understand now
your point with the connections between pins and signal P20,
P21 and P22 but I had some diffuculty to cross link that
information with the PCB drawing... until I realize that i
was counting incorrectly the pins while I did know that it
was from top right then CCW

Do what I say, not what I do...
I was correct for top side
numbers but reverse for the bottom side i.e i did restart
with 9 below 1... Stupid!



So now I do have the following:



P22 IC18-9 IC19-9 and IC22-23  => OK

P21 IC18-10 IC19-10 and IC22-22 => OK

P20 IC18-11 IC19-11 and IC22-21  => OK

INH IC19-6 and IC23-10 => OK

"X" IC18-3 and IC19-3 and IC27-1
=>OK



I did recheck my previous post to correct them in light of
my wrong pin counting



1) I did the DAC calib again and turning VR6 CCW => from
led 8 to led 7 6 then 5, while turning VR7 CCW from led 8 to
7 then 6

OK



2) pin 3 of IC18 and pin 1 of IC27, OK

OK



3) pin 6 of IC18 and IC23-4. OK

OK



4) pins 9,10 and 11 of IC18 and 19 should be connected to
each other and to IC22 ?



UPDATED: Wrong comment see above!



5) With power on, you should be able to vary a front
panel

control,such as filter cutoff, and see IC7 pin 7 change
voltage as you

do it (in manual mode).



3.177V => 3.120V cut off from 10 to 0 with all controls
at normal setting



UPDATED: Luckily correct, I did measure in fact pin 6 but it
is strapped to pin 7...



6) when you select different patches, you should see the
attack at IC10-1decay



=> On IC 10-1 no change always 13.56V



UPDATED: Correct measurement



7) Decay at IC10-7 ?



=>slight variation between patches. In manual mode and
normal setting with decay control from 0 to 10 => 3.240V
to 3.346V



UPDATED: Again Luckily correct, I did measure in fact pin 6
but it is strapped to pin 7...



I apologize for my mistake and thanks again for your
patience and your support.

Phil



--------------------------------------------

En date de : Jeu 29.5.14, Bob Grieb
bobgrieb@yahoo.com
[PolySix] <
PolySix@yahoogroups.com> a écrit :



Objet: Re: [PolySix] EG and VCF not working after battery
leakage

À: "
PolySix@yahoogroups.com"
<
PolySix@yahoogroups.com>

Date: Jeudi 29 mai 2014, 3h28





These should be

connected:

IC18-9 IC19-9 and IC22-23  this

is signal "P22"

IC18-10 IC19-10 and IC22-22 

this is signal

"P21"

IC18-11 IC19-11 and IC22-21 

this is signal "P20"

IC19-6 and

IC23-10

Also, IC18-3 must connect to

IC19-3 as well as to IC27-1 which you checked already.



You may want to download the

service manual as it is available forfree on the web, and
see the

schematic for KLM-367.

If IC18 and IC19 are not

connected properly, the control voltages

won't work

correctly.

Please ignore IC22 pins 5, 19,and

35.    They are not related to

this discussion.  We are

checking A B C and INH signals to IC18 and

IC19.

  
Bob







From: "Phil65

phil0065@yahoo.fr [PolySix]"

<
PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Wednesday, May

28, 2014 7:55 PM



Subject: Re: [PolySix]

EG and VCF not working after battery leakage





 



















Hi Bob,



You are really helpfull.
Merci !







1) I did the DAC calib again and turning VR6 CCW =>
from

led 8 to led 7 6 then 5, while turning VR7 CCW from led
8

to 7 then 6



2) pin 3 of IC18 and pin 1 of IC27, OK



3) pin 6 of IC18 and IC23-4.  OK



4) pins 9,10 and 11 of IC18 and 19 should be connected to


each other and to IC22 ?



  It seems I have a problem here. I found only IC18-9 +

IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected
together.

Nothing between IC18-10 (IC18-11) with any pin of IC19
or

IC22 ??



Shall I strap IC18-9 + 10 + 11







5) With power on, you should be able to vary a front

panel



control,such as filter cutoff, and see IC7 pin 7
change

voltage as you



do it (in manual mode).







3.177V => 3.120V cut off from 10 to 0 with all
controls

at normal setting







  



6) when you select different patches, you should see the


attack at IC10-1decay







=> On IC 10-1 no change always 13.56V







7) Decay at IC10-7 ?







=>slight variation between patches. In manual mode
and

normal setting with decay control from 0 to 10 =>
3.240V

to 3.346V







Thanks for your help, really appreciated !



Phil







--------------------------------------------



En date de : Jeu 29.5.14, Bob Grieb
bobgrieb@yahoo.com

[PolySix] <
PolySix@yahoogroups.com> a écrit :







Objet: Re: [PolySix] EG and VCF not working after
battery

leakage



À: "
PolySix@yahoogroups.com"

<
PolySix@yahoogroups.com>



Date: Jeudi 29 mai 2014, 0h21











 







































Hi Phil,



    



If you are seeing LEDs 1 and 8 in DAC calibration mode,

that



impliesthat



the DAC and the input muxes are working.  
Another

thing



to try -



in



the DAC calibration test mode, turn the two controls

that



you were supposedto



set for this test, and you should see the LED's



change.



   



Don't worry about the click noise test for



now.



   



The voltage demux for controlling the EG and the VCF is



mostlyIC18



(4051).   I would check with the ohmmeter that you

have



good connections(with



the power off, of course) between pin 3 of IC18 and pin
1

of



IC27, and between



pin



6 of IC18 and IC23-4.  Also, pins 9,10 and 11 of IC18

and



19 should be connectedto



each other and to IC22.  







   



With power on, you should be able to vary a front panel



control,such



as filter cutoff, and see IC7 pin 7 change voltage as

you



do it (in manual



mode).  



And when you select different patches, you should see

the



attack at IC10-1decay



at IC10-7, etc changing with different patches.  Be

careful



when probing with



the



power on not to short anything or you can damage chips
in

an



instant.  Use the gndtest



pt for the meter black or negative lead.











   



Tell us what you measure at these points in the circuit

and



if they vary with the



corresponding



front panel control in manual mode, or when you change



patches.



   



Bob











From:



"Phil65
phil0065@yahoo.fr [PolySix]"



<
PolySix@yahoogroups.com>



To:



PolySix@yahoogroups.com



Sent: Wednesday, May



28, 2014 6:05 PM



Subject: Re: [PolySix]



EG and VCF not working after battery leakage











 







































Thanks Bob for your quick answer !















Seems that my patch looses "EG" from memory.
I



have no sound unless I put the VCA switch from EG back

to



"square" again to get some sound.







Not sure to keep the bank memory even when polysix is

still



on.















I did the procedure and it passes directly. Here a
quick



summary:







*dummy 56 ohm => all leds on







*remove resistance => A1 leds







*SW1 in test mode and tape switch to enable => Only

leds



1+8 on







* SW1 back to normal => still leds 1+8







* "7 ) confirm that output DC click noise is
within

6V



p-p when power is switched off" => sorry I

don't



understand precisely what to do/ measure?







* Power on again => A1 leds on.















Thanks for your support







Phil















--------------------------------------------







En date de : Mer 28.5.14, Bob Grieb
bobgrieb@yahoo.com



[PolySix] <
PolySix@yahoogroups.com> a écrit :















Objet: Re: [PolySix] EG and VCF not working after

battery


Re: SV: [PolySix] EG and VCF not working after battery leakage

2014-06-04 by Bob Grieb

 Phil,
 
    C and 3 LED's are both fed from data bit D2.   Please check resistance
of this connection between KLM-367  and KLM-371 board.   Ideally, you should
check the resistance from the source IC on the KLM-367 (IC31) to the chip on
the KLM-371 where it's used to control the LED (IC2 and IC4).   Better than
connector to connector, in case there is a trace problem on one of the pc bds.
 
    If you can get your hands on a decent oscilloscope, I can send you
captured waveforms for comparison.   It seems that you have several
different issues to track down.
 
    Bob

From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Sent: Tuesday, June 3, 2014 5:16 PM
Subject: Re: SV: [PolySix] EG and VCF not working after battery leakage

 
Hi
My KLM 367 repairing may not be good enough as I realize on Sunday that after 5-10 minutes of warming I have additional leds along with A+1 (led 3 then C+3 are also flashing). Disappointing..
I spend many time rechecking the board without success. After some cool down, when I switch ON, only leds A1 are on but after some timeof warming  C + 3 are coming back plus a noisy sound. 

Please find also an update on the voltage:

Does IC10 have -15 on pin 4?   => -15V
Does IC18 have +5 on pin 16  and -5 on pin 7? => Yes  +5V and -5V

I have also recheck the DAC calib. 
Cut off set to 10 => led 1+8
Cut Off from 0-8 => led 1+5
 Speed intensity 0-6 => led 1+8
Speed intensity 7-10 => led 4+8
  
Today unfortunately I do not have access to a proper oscillo. I will check what I can do with this simple USB oscillo, but I did try already and manage to get for example the correct shape for the figure 2 in the adjustment procedure (20 msec). I will send a screen copy in a next mail
Thanks
Phil


Le Mardi 3 juin 2014 14h03, "'Hans' hr.public@lonningdal.net [PolySix]" <PolySix@yahoogroups.com> a écrit :


 
Hi
 
From my own experience a scope based around a USB sound card they’re only useful up to approx. 5200Hz.
 
There are ways around this by implementing a simple sample and hold circuit to the input. But this circuit has to be synced with the ADC clock which complicate things. I’ve not investigated this further, but my guess this is how many low priced digital scopes is manufactured.
 
-hans
 
Fra: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com]
Sendt: 3. juni 2014 13:48
Til: PolySix@yahoogroups.com
Emne: Re: [PolySix] EG and VCF not working after battery leakage
 
 

Hi Phil,
 
   If you plan to use that USB DAC as an oscilloscope, I don't think
it will work very well.   It's more of a data sampler, than a scope, it seems.
It doesn't sample fast enough to show the waveforms in a processor-based
synth.   You need something with at least 10-20 MHz bandwidth, and really
at least 60 MHz would be much better.
 
     Bob
 
From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Friday, May 30, 2014 6:54 AM
Subject: Re: [PolySix] EG and VCF not working after battery leakage
 
 
Thanks Bob and Johannes

I am off for the week end with family, but managed to take only the KLM 367A board and VM (shh!, don't tell my wife she doesn't know....)
I have checked all connections on IC23 and are OK. I will update on voltage on Sunday night..

Also I have managed to get a USB oscillo (data acquisition board) with dedicated software (tracerDAQ).
Precisely:
http://www.mccdaq.com/usb-data-acquisition/USB-1208FS.aspx

much better than nothing, so I should be equipped for the next stage...
(still in learning phase anyway !)
Thanks for your support
Phil

--------------------------------------------
En date de : Jeu 29.5.14, Bob Grieb
bobgrieb@yahoo.com [PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "
PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Jeudi 29 mai 2014, 14h49


 










Sorry for
the multiple emails. 
In DAC calibration
mode,you
should be able to turn the cutoff and see the lit LED move
from 5-8as
you turn it.   Likewise, you should be able to move the
speed/intensity potand
see the other lit LED move from 1-4.  
Bob



From:
"Phil65
phil0065@yahoo.fr [PolySix]"
<
PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Thursday, May 29,
2014 4:47 AM
Subject: Re: [PolySix]
EG and VCF not working after battery leakage


 









Looking at the klm367 schematic, I understand now
your point with the connections between pins and signal P20,
P21 and P22 but I had some diffuculty to cross link that
information with the PCB drawing... until I realize that i
was counting incorrectly the pins while I did know that it
was from top right then CCW

Do what I say, not what I do...
I was correct for top side
numbers but reverse for the bottom side i.e i did restart
with 9 below 1... Stupid!



So now I do have the following:



P22 IC18-9 IC19-9 and IC22-23  => OK

P21 IC18-10 IC19-10 and IC22-22 => OK

P20 IC18-11 IC19-11 and IC22-21  => OK

INH IC19-6 and IC23-10 => OK

"X" IC18-3 and IC19-3 and IC27-1
=>OK



I did recheck my previous post to correct them in light of
my wrong pin counting



1) I did the DAC calib again and turning VR6 CCW => from
led 8 to led 7 6 then 5, while turning VR7 CCW from led 8 to
7 then 6

OK



2) pin 3 of IC18 and pin 1 of IC27, OK

OK



3) pin 6 of IC18 and IC23-4. OK

OK



4) pins 9,10 and 11 of IC18 and 19 should be connected to
each other and to IC22 ?



UPDATED: Wrong comment see above!



5) With power on, you should be able to vary a front
panel

control,such as filter cutoff, and see IC7 pin 7 change
voltage as you

do it (in manual mode).



3.177V => 3.120V cut off from 10 to 0 with all controls
at normal setting



UPDATED: Luckily correct, I did measure in fact pin 6 but it
is strapped to pin 7...



6) when you select different patches, you should see the
attack at IC10-1decay



=> On IC 10-1 no change always 13.56V



UPDATED: Correct measurement



7) Decay at IC10-7 ?



=>slight variation between patches. In manual mode and
normal setting with decay control from 0 to 10 => 3.240V
to 3.346V



UPDATED: Again Luckily correct, I did measure in fact pin 6
but it is strapped to pin 7...



I apologize for my mistake and thanks again for your
patience and your support.

Phil



--------------------------------------------

En date de : Jeu 29.5.14, Bob Grieb
bobgrieb@yahoo.com
[PolySix] <
PolySix@yahoogroups.com> a écrit :



Objet: Re: [PolySix] EG and VCF not working after battery
leakage

À: "
PolySix@yahoogroups.com"
<
PolySix@yahoogroups.com>

Date: Jeudi 29 mai 2014, 3h28





These should be

connected:

IC18-9 IC19-9 and IC22-23  this

is signal "P22"

IC18-10 IC19-10 and IC22-22 

this is signal

"P21"

IC18-11 IC19-11 and IC22-21 

this is signal "P20"

IC19-6 and

IC23-10

Also, IC18-3 must connect to

IC19-3 as well as to IC27-1 which you checked already.



You may want to download the

service manual as it is available forfree on the web, and
see the

schematic for KLM-367.

If IC18 and IC19 are not

connected properly, the control voltages

won't work

correctly.

Please ignore IC22 pins 5, 19,and

35.    They are not related to

this discussion.  We are

checking A B C and INH signals to IC18 and

IC19.

  
Bob







From: "Phil65

phil0065@yahoo.fr [PolySix]"

<
PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Wednesday, May

28, 2014 7:55 PM



Subject: Re: [PolySix]

EG and VCF not working after battery leakage





 



















Hi Bob,



You are really helpfull.
Merci !







1) I did the DAC calib again and turning VR6 CCW =>
from

led 8 to led 7 6 then 5, while turning VR7 CCW from led
8

to 7 then 6



2) pin 3 of IC18 and pin 1 of IC27, OK



3) pin 6 of IC18 and IC23-4.  OK



4) pins 9,10 and 11 of IC18 and 19 should be connected to


each other and to IC22 ?



  It seems I have a problem here. I found only IC18-9 +

IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected
together.

Nothing between IC18-10 (IC18-11) with any pin of IC19
or

IC22 ??



Shall I strap IC18-9 + 10 + 11







5) With power on, you should be able to vary a front

panel



control,such as filter cutoff, and see IC7 pin 7
change

voltage as you



do it (in manual mode).







3.177V => 3.120V cut off from 10 to 0 with all
controls

at normal setting







  



6) when you select different patches, you should see the


attack at IC10-1decay







=> On IC 10-1 no change always 13.56V







7) Decay at IC10-7 ?







=>slight variation between patches. In manual mode
and

normal setting with decay control from 0 to 10 =>
3.240V

to 3.346V







Thanks for your help, really appreciated !



Phil







--------------------------------------------



En date de : Jeu 29.5.14, Bob Grieb
bobgrieb@yahoo.com

[PolySix] <
PolySix@yahoogroups.com> a écrit :







Objet: Re: [PolySix] EG and VCF not working after
battery

leakage



À: "
PolySix@yahoogroups.com"

<
PolySix@yahoogroups.com>



Date: Jeudi 29 mai 2014, 0h21











 







































Hi Phil,



    



If you are seeing LEDs 1 and 8 in DAC calibration mode,

that



impliesthat



the DAC and the input muxes are working.  
Another

thing



to try -



in



the DAC calibration test mode, turn the two controls

that



you were supposedto



set for this test, and you should see the LED's



change.



   



Don't worry about the click noise test for



now.



   



The voltage demux for controlling the EG and the VCF is



mostlyIC18



(4051).   I would check with the ohmmeter that you

have



good connections(with



the power off, of course) between pin 3 of IC18 and pin
1

of



IC27, and between



pin



6 of IC18 and IC23-4.  Also, pins 9,10 and 11 of IC18

and



19 should be connectedto



each other and to IC22.  







   



With power on, you should be able to vary a front panel



control,such



as filter cutoff, and see IC7 pin 7 change voltage as

you



do it (in manual



mode).  



And when you select different patches, you should see

the



attack at IC10-1decay



at IC10-7, etc changing with different patches.  Be

careful



when probing with



the



power on not to short anything or you can damage chips
in

an



instant.  Use the gndtest



pt for the meter black or negative lead.











   



Tell us what you measure at these points in the circuit

and



if they vary with the



corresponding



front panel control in manual mode, or when you change



patches.



   



Bob











From:



"Phil65

Re: SV: [PolySix] EG and VCF not working after battery leakage

2014-06-04 by Bob Grieb

 Phil,
 
   You said you have 13.56 volts on IC10-1.   This is very strange.
Please check to see if pins 1 and 2 of this chip are connected as they
should be.   Do you see the same voltage on pin 2?    Also, measure the
voltage on pin 3.  With the output connected to the inverting input,
this op amp is a voltage follower.   The output should match the input
(at pin 3)  Pin 3 should never go beyond +/- 5 volts, since it is fed
from IC18 which has those as its power rails.   So something odd is happening
here.  Or maybe that op amp is just toast.  It seems like the output is
just sitting at its positive output limit.
 
    Bob

From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Sent: Tuesday, June 3, 2014 5:16 PM
Subject: Re: SV: [PolySix] EG and VCF not working after battery leakage

 
Hi
My KLM 367 repairing may not be good enough as I realize on Sunday that after 5-10 minutes of warming I have additional leds along with A+1 (led 3 then C+3 are also flashing). Disappointing..
I spend many time rechecking the board without success. After some cool down, when I switch ON, only leds A1 are on but after some timeof warming  C + 3 are coming back plus a noisy sound. 

Please find also an update on the voltage:

Does IC10 have -15 on pin 4?   => -15V
Does IC18 have +5 on pin 16  and -5 on pin 7? => Yes  +5V and -5V

I have also recheck the DAC calib. 
Cut off set to 10 => led 1+8
Cut Off from 0-8 => led 1+5
 Speed intensity 0-6 => led 1+8
Speed intensity 7-10 => led 4+8
  
Today unfortunately I do not have access to a proper oscillo. I will check what I can do with this simple USB oscillo, but I did try already and manage to get for example the correct shape for the figure 2 in the adjustment procedure (20 msec). I will send a screen copy in a next mail
Thanks
Phil


Le Mardi 3 juin 2014 14h03, "'Hans' hr.public@lonningdal.net [PolySix]" <PolySix@yahoogroups.com> a écrit :


 
Hi
 
From my own experience a scope based around a USB sound card they’re only useful up to approx. 5200Hz.
 
There are ways around this by implementing a simple sample and hold circuit to the input. But this circuit has to be synced with the ADC clock which complicate things. I’ve not investigated this further, but my guess this is how many low priced digital scopes is manufactured.
 
-hans
 
Fra: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com]
Sendt: 3. juni 2014 13:48
Til: PolySix@yahoogroups.com
Emne: Re: [PolySix] EG and VCF not working after battery leakage
 
 

Hi Phil,
 
   If you plan to use that USB DAC as an oscilloscope, I don't think
it will work very well.   It's more of a data sampler, than a scope, it seems.
It doesn't sample fast enough to show the waveforms in a processor-based
synth.   You need something with at least 10-20 MHz bandwidth, and really
at least 60 MHz would be much better.
 
     Bob
 
From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Friday, May 30, 2014 6:54 AM
Subject: Re: [PolySix] EG and VCF not working after battery leakage
 
 
Thanks Bob and Johannes

I am off for the week end with family, but managed to take only the KLM 367A board and VM (shh!, don't tell my wife she doesn't know....)
I have checked all connections on IC23 and are OK. I will update on voltage on Sunday night..

Also I have managed to get a USB oscillo (data acquisition board) with dedicated software (tracerDAQ).
Precisely:
http://www.mccdaq.com/usb-data-acquisition/USB-1208FS.aspx

much better than nothing, so I should be equipped for the next stage...
(still in learning phase anyway !)
Thanks for your support
Phil

--------------------------------------------
En date de : Jeu 29.5.14, Bob Grieb
bobgrieb@yahoo.com [PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "
PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Jeudi 29 mai 2014, 14h49


 










Sorry for
the multiple emails. 
In DAC calibration
mode,you
should be able to turn the cutoff and see the lit LED move
from 5-8as
you turn it.   Likewise, you should be able to move the
speed/intensity potand
see the other lit LED move from 1-4.  
Bob



From:
"Phil65
phil0065@yahoo.fr [PolySix]"
<
PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Thursday, May 29,
2014 4:47 AM
Subject: Re: [PolySix]
EG and VCF not working after battery leakage


 









Looking at the klm367 schematic, I understand now
your point with the connections between pins and signal P20,
P21 and P22 but I had some diffuculty to cross link that
information with the PCB drawing... until I realize that i
was counting incorrectly the pins while I did know that it
was from top right then CCW

Do what I say, not what I do...
I was correct for top side
numbers but reverse for the bottom side i.e i did restart
with 9 below 1... Stupid!



So now I do have the following:



P22 IC18-9 IC19-9 and IC22-23  => OK

P21 IC18-10 IC19-10 and IC22-22 => OK

P20 IC18-11 IC19-11 and IC22-21  => OK

INH IC19-6 and IC23-10 => OK

"X" IC18-3 and IC19-3 and IC27-1
=>OK



I did recheck my previous post to correct them in light of
my wrong pin counting



1) I did the DAC calib again and turning VR6 CCW => from
led 8 to led 7 6 then 5, while turning VR7 CCW from led 8 to
7 then 6

OK



2) pin 3 of IC18 and pin 1 of IC27, OK

OK



3) pin 6 of IC18 and IC23-4. OK

OK



4) pins 9,10 and 11 of IC18 and 19 should be connected to
each other and to IC22 ?



UPDATED: Wrong comment see above!



5) With power on, you should be able to vary a front
panel

control,such as filter cutoff, and see IC7 pin 7 change
voltage as you

do it (in manual mode).



3.177V => 3.120V cut off from 10 to 0 with all controls
at normal setting



UPDATED: Luckily correct, I did measure in fact pin 6 but it
is strapped to pin 7...



6) when you select different patches, you should see the
attack at IC10-1decay



=> On IC 10-1 no change always 13.56V



UPDATED: Correct measurement



7) Decay at IC10-7 ?



=>slight variation between patches. In manual mode and
normal setting with decay control from 0 to 10 => 3.240V
to 3.346V



UPDATED: Again Luckily correct, I did measure in fact pin 6
but it is strapped to pin 7...



I apologize for my mistake and thanks again for your
patience and your support.

Phil



--------------------------------------------

En date de : Jeu 29.5.14, Bob Grieb
bobgrieb@yahoo.com
[PolySix] <
PolySix@yahoogroups.com> a écrit :



Objet: Re: [PolySix] EG and VCF not working after battery
leakage

À: "
PolySix@yahoogroups.com"
<
PolySix@yahoogroups.com>

Date: Jeudi 29 mai 2014, 3h28





These should be

connected:

IC18-9 IC19-9 and IC22-23  this

is signal "P22"

IC18-10 IC19-10 and IC22-22 

this is signal

"P21"

IC18-11 IC19-11 and IC22-21 

this is signal "P20"

IC19-6 and

IC23-10

Also, IC18-3 must connect to

IC19-3 as well as to IC27-1 which you checked already.



You may want to download the

service manual as it is available forfree on the web, and
see the

schematic for KLM-367.

If IC18 and IC19 are not

connected properly, the control voltages

won't work

correctly.

Please ignore IC22 pins 5, 19,and

35.    They are not related to

this discussion.  We are

checking A B C and INH signals to IC18 and

IC19.

  
Bob







From: "Phil65

phil0065@yahoo.fr [PolySix]"

<
PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Wednesday, May

28, 2014 7:55 PM



Subject: Re: [PolySix]

EG and VCF not working after battery leakage





 



















Hi Bob,



You are really helpfull.
Merci !







1) I did the DAC calib again and turning VR6 CCW =>
from

led 8 to led 7 6 then 5, while turning VR7 CCW from led
8

to 7 then 6



2) pin 3 of IC18 and pin 1 of IC27, OK



3) pin 6 of IC18 and IC23-4.  OK



4) pins 9,10 and 11 of IC18 and 19 should be connected to


each other and to IC22 ?



  It seems I have a problem here. I found only IC18-9 +

IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected
together.

Nothing between IC18-10 (IC18-11) with any pin of IC19
or

IC22 ??



Shall I strap IC18-9 + 10 + 11







5) With power on, you should be able to vary a front

panel



control,such as filter cutoff, and see IC7 pin 7
change

voltage as you



do it (in manual mode).







3.177V => 3.120V cut off from 10 to 0 with all
controls

at normal setting







  



6) when you select different patches, you should see the


attack at IC10-1decay







=> On IC 10-1 no change always 13.56V







7) Decay at IC10-7 ?







=>slight variation between patches. In manual mode
and

normal setting with decay control from 0 to 10 =>
3.240V

to 3.346V







Thanks for your help, really appreciated !



Phil







--------------------------------------------



En date de : Jeu 29.5.14, Bob Grieb
bobgrieb@yahoo.com

[PolySix] <
PolySix@yahoogroups.com> a écrit :







Objet: Re: [PolySix] EG and VCF not working after
battery

leakage



À: "
PolySix@yahoogroups.com"

<
PolySix@yahoogroups.com>



Date: Jeudi 29 mai 2014, 0h21











 







































Hi Phil,



    



If you are seeing LEDs 1 and 8 in DAC calibration mode,

that



impliesthat



the DAC and the input muxes are working.  
Another

thing



to try -



in



the DAC calibration test mode, turn the two controls

that



you were supposedto



set for this test, and you should see the LED's



change.



   



Don't worry about the click noise test for



now.



   



The voltage demux for controlling the EG and the VCF is



mostlyIC18



(4051).   I would check with the ohmmeter that you

have



good connections(with



the power off, of course) between pin 3 of IC18 and pin
1

of



IC27, and between



pin



6 of IC18 and IC23-4.  Also, pins 9,10 and 11 of IC18

and



19 should be connectedto



each other and to IC22.  







   



With power on, you should be able to vary a front panel



control,such



as filter cutoff, and see IC7 pin 7 change voltage as

you



do it (in manual



mode).  



And when you select different patches, you should see

the



attack at IC10-1decay



at IC10-7, etc changing with different patches.  Be

careful



when probing with



the



power on not to short anything or you can damage chips
in

an



instant.  Use the gndtest



pt for the meter black or negative lead.











   



Tell us what you measure at these points in the circuit

and



if they vary with the



corresponding



front panel control in manual mode, or when you change



patches.



   



Bob











From:



"Phil65

Re: SV: [PolySix] EG and VCF not working after battery leakage

2014-06-04 by Phil65

Bonjour les amis Polysix,

1) Concerning the problem with led C+3, I have rechecked continuity between IC without success (cold and warm check). Precisely I have checked between IC31-8 and all the follwoing:
 Board 367 (Ic33-10 ic26-4 ic28-14 cn6-5 cn10-2)
 Board 371 (ic2-6 ic4-6)
 Board 370 (sw2-0)

All continuity seem OK. 
Anyway problem with C3 is not clear. It could appear after 30s warm up  or never (If I do nothing ?), unless I switch apparently effect mode buttom or led 3. It disappears if I select "manual" ... Then selecting "1" again make C3 disappear until I select "3" and then "C" light up directly ...?
 
2) For the "high" voltage please find an update of the reading (done at normal setting as shown in service manual, figure1 and manual switch on):

IC10-1   13,46
IC10-2   13,46
IC10-3   NOT STABLE  ~0,2?
IC10-4   -14,99
IC10-5   3,173
IC10-6   3,206
IC10-7   3,206
IC10-8   14,94
  
IC11 is too high too?               
IC11-1   14,2
IC11-2   14,2
IC11-3   NOT STABLE ~0,38
IC11-4   -14,99
IC11-5   3,174
IC11-6   ~3,2
IC11-7   ~3,2
IC11-8   14,94
 
SO I have checked the following (in case...):        
IC16-1   3,18
IC7-1     3,212
IC7-7     3,16
IC9-1     3,18
IC12-7   2,2
IC12-1   2,21
IC13-1   2,21
IC13-7   2,22
IC14-7   2,22


3) For the usb -scope I have try to join as an example a screen copy of the signal found at TP5 equivalent to figure 2 
"observe connector CN3-5 on oscilloscope"

 
Thanks again for your support and comments
Phil


Le Mercredi 4 juin 2014 4h32, "Bob Grieb bobgrieb@yahoo.com [PolySix]" <PolySix@yahoogroups.com> a écrit :



 
 Phil,
 
   You said you have 13.56 volts on IC10-1.   This is very strange.
Please check to see if pins 1 and 2 of this chip are connected as they
should be.   Do you see the same voltage on pin 2?    Also, measure the
voltage on pin 3.  With the output connected to the inverting input,
this op amp is a voltage follower.   The output should match the input
(at pin 3)  Pin 3 should never go beyond +/- 5 volts, since it is fed
from IC18 which has those as its power rails.   So something odd is happening
here.  Or maybe that op amp is just toast.  It seems like the output is
just sitting at its positive output limit.
 
    Bob

From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Sent: Tuesday, June 3, 2014 5:16 PM
Subject: Re: SV: [PolySix] EG and VCF not working after battery leakage



 
Hi
My KLM 367 repairing may not be good enough as I realize on Sunday that after 5-10 minutes of warming I have additional leds along with A+1 (led 3 then C+3 are also flashing). Disappointing..

I spend many time rechecking the board without success. After some cool down, when I switch ON, only leds A1 are on but after some timeof warming  C + 3 are coming back plus a noisy sound. 

Please find also an update on the voltage:

Does IC10 have -15 on pin 4?   => -15V

Does IC18 have +5 on pin 16  and -5 on pin 7? => Yes  +5V and -5V

I have also recheck the DAC calib. 
Cut off set to 10 => led 1+8

Cut Off from 0-8 => led 1+5
 Speed intensity 0-6 => led 1+8
Speed intensity 7-10 => led 4+8
  
Today unfortunately I do not have access to a proper oscillo. I will check what I can do with this simple USB oscillo, but I did try already and manage to get for example the correct shape for the figure 2 in the adjustment procedure (20 msec). I will send a screen copy in a next mail
Thanks
Phil


Le Mardi 3 juin 2014 14h03, "'Hans' hr.public@lonningdal.net [PolySix]" <PolySix@yahoogroups.com> a écrit :



 
Hi
 
From my own experience a scope based around a USB sound card they’re only useful up to approx. 5200Hz.
 
There are ways around this by implementing a simple sample and hold circuit to the input. But this circuit has to be synced with the ADC clock which complicate things. I’ve not investigated this further, but my guess this is how many low priced digital scopes is manufactured.
 
-hans
 
Fra:PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com]
Sendt: 3. juni 2014 13:48
Til: PolySix@yahoogroups.com
Emne: Re: [PolySix] EG and VCF not working after battery leakage
 
 

Hi Phil,
 
   If you plan to use that USB DAC as an oscilloscope, I don't think
it will work very well.   It's more of a data sampler, than a scope, it seems.
It doesn't sample fast enough to show the waveforms in a processor-based
synth.   You need something with at least 10-20 MHz bandwidth, and really
at least 60 MHz would be much better.
 
     Bob
 
From:"Phil65 phil0065@yahoo.fr[PolySix]" <PolySix@yahoogroups.com>
To: PolySix@yahoogroups.com
Sent: Friday, May 30, 2014 6:54 AM
Subject: Re: [PolySix] EG and VCF not working after battery leakage
 
 
Thanks Bob and Johannes

I am off for the week end with family, but managed to take only the KLM 367A board and VM (shh!, don't tell my wife she doesn't know....)
I have checked all connections on IC23 and are OK. I will update on voltage on Sunday night..

Also I have managed to get a USB oscillo (data acquisition board) with dedicated software (tracerDAQ). Precisely:
http://www.mccdaq.com/usb-data-acquisition/USB-1208FS.aspx

much better than nothing, so I should be equipped for the next stage... (still in learning phase anyway !)
Thanks for your support
Phil

--------------------------------------------
En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com[PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Jeudi 29 mai
2014, 14h49


 










Sorry for
the multiple emails.  In DAC calibration
mode,you
should be able to turn the cutoff and see the lit LED move
from 5-8as
you turn it.   Likewise, you should be able to move the
speed/intensity potand
see the other lit LED move from 1-4.  
Bob



From:
"Phil65 phil0065@yahoo.fr[PolySix]"
<PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Thursday, May 29,
2014 4:47 AM
Subject: Re: [PolySix]
EG and VCF not working after battery leakage


 









Looking at the klm367 schematic, I understand now
your point with the
connections between pins and signal P20,
P21 and P22 but I had some diffuculty to cross link that
information
with the PCB drawing... until I realize that i
was counting incorrectly the pins while I did know that it
was from top right then CCW

Do what I say, not what I do... I was correct for top side
numbers but reverse for the bottom side i.e i did restart
with 9 below 1... Stupid!



So now I do have the following:



P22 IC18-9 IC19-9 and IC22-23  => OK

P21 IC18-10
IC19-10 and IC22-22 => OK

P20 IC18-11 IC19-11 and IC22-21  => OK

INH IC19-6 and IC23-10 => OK

"X" IC18-3 and IC19-3 and IC27-1
=>OK



I did recheck my previous post to correct them in light of
my wrong pin counting



1) I did the DAC calib again and turning
VR6 CCW => from
led 8 to led 7 6 then 5, while turning VR7 CCW from led 8 to
7 then 6

OK



2) pin 3 of IC18 and pin 1 of IC27, OK

OK



3) pin 6 of IC18 and IC23-4. OK

OK



4) pins 9,10 and 11 of IC18 and 19 should be connected to
each other and to IC22 ?



UPDATED: Wrong comment see above!



5) With power on, you should be able to vary a front
panel

control,such as filter cutoff, and see IC7 pin 7 change
voltage as you

do it (in manual mode).



3.177V => 3.120V cut off from 10 to 0 with all controls
at normal setting



UPDATED: Luckily correct, I
did measure in fact pin 6 but it
is strapped to pin 7...



6) when you select different patches, you should see the
attack at IC10-1decay



=> On IC 10-1 no change always 13.56V



UPDATED: Correct measurement



7) Decay at IC10-7 ?



=>slight variation between patches. In manual mode and
normal setting with decay control from 0 to 10 => 3.240V
to 3.346V



UPDATED: Again Luckily correct, I did measure in fact pin 6
but it is strapped to pin 7...



I apologize for my mistake and
thanks again for your
patience and your support.

Phil



--------------------------------------------

En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com
[PolySix] <PolySix@yahoogroups.com> a écrit :



Objet: Re: [PolySix] EG and VCF not working after battery
leakage

À: "PolySix@yahoogroups.com"
<PolySix@yahoogroups.com>

Date: Jeudi 29 mai 2014, 3h28





These should be

connected:

IC18-9 IC19-9 and IC22-23  this

is signal "P22"

IC18-10 IC19-10 and IC22-22 

this is signal

"P21"

IC18-11 IC19-11 and IC22-21 

this is signal
"P20"

IC19-6 and

IC23-10

Also, IC18-3 must connect to

IC19-3 as well as to IC27-1 which you checked already.



You may want to download the

service manual as it is available forfree on the web, and
see the

schematic for KLM-367.

If IC18
and IC19 are not

connected properly, the control voltages

won't work

correctly.

Please ignore IC22 pins 5, 19,and

35.    They are not related to

this discussion.  We are

checking A B C and INH signals to IC18 and

IC19.

   Bob







From: "Phil65

phil0065@yahoo.fr[PolySix]"

<PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Wednesday, May

28, 2014 7:55 PM



Subject: Re: [PolySix]

EG and VCF not working after battery leakage





 



















Hi Bob,



You are really helpfull. Merci !







1) I did the DAC calib again and turning VR6 CCW =>
from

led 8 to led 7 6 then 5, while turning VR7 CCW from led
8

to 7 then 6



2) pin 3 of IC18 and pin 1 of IC27, OK



3) pin 6 of IC18 and IC23-4.  OK



4) pins 9,10 and 11 of IC18 and 19 should be connected to


each other and to IC22 ?



  It seems I have a problem here. I found only IC18-9 +

IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected
together.

Nothing between IC18-10 (IC18-11) with any pin of IC19
or

IC22 ??



Shall I strap IC18-9 + 10 + 11







5) With power on, you should be able to vary a front

panel



control,such as filter cutoff, and see IC7 pin
7
change

voltage as you



do it (in manual mode).







3.177V => 3.120V cut off from 10 to 0 with all
controls

at normal setting







  



6) when you select different patches, you should see the


attack at IC10-1decay







=> On IC 10-1 no change always 13.56V







7) Decay at IC10-7 ?







=>slight variation between patches. In manual mode
and

normal setting with decay control from 0 to 10 =>
3.240V

to 3.346V







Thanks for
your help, really appreciated !



Phil







--------------------------------------------



En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com

[PolySix] <PolySix@yahoogroups.com> a écrit :







Objet: Re: [PolySix] EG and VCF not working after
battery

leakage



À: "PolySix@yahoogroups.com"

<PolySix@yahoogroups.com>



Date: Jeudi 29 mai 2014, 0h21











 







































Hi Phil,



    



If you are seeing LEDs 1 and 8 in DAC calibration mode,

that



impliesthat



the DAC and the input muxes are
working.   Another

thing



to try -



in



the DAC calibration test mode, turn the two controls

that



you were supposedto



set for this test, and you should see the LED's



change.



   



Don't worry about the click noise test for



now.



   



The voltage demux for controlling the EG and the VCF is



mostlyIC18



(4051).   I would
check with the ohmmeter that you

have



good connections(with



the power off, of course) between pin 3 of IC18 and pin
1

of



IC27, and between



pin



6 of IC18 and IC23-4.  Also, pins 9,10 and 11 of IC18

and



19 should be connectedto



each other and to IC22.  







   



With power on, you should be able to vary a front panel



control,such



as filter cutoff, and see IC7 pin 7 change voltage as

you



do it (in manual



mode).  



And when you select different patches, you should see

the



attack at IC10-1decay



at IC10-7, etc changing with different patches.  Be

careful



when probing with



the



power on not to short anything or you can damage chips
in

an



instant.  Use the gndtest



pt for the meter black or negative lead.











   



Tell us what you measure at these points in the circuit

and



if they vary with the



corresponding



front panel control in manual mode, or when you change



patches.



   



Bob











From:



"Phil65 phil0065@yahoo.fr[PolySix]"



<PolySix@yahoogroups.com>



To:



PolySix@yahoogroups.com



Sent: Wednesday, May



28, 2014 6:05 PM



Subject:
Re: [PolySix]



EG and VCF not working after battery leakage











 







































Thanks Bob for your quick answer !















Seems that my patch looses "EG" from memory.
I



have no
sound unless I put the VCA switch from EG back

to



"square" again to get some sound.







Not sure to keep the bank memory even when polysix is

still



on.















I did the procedure and it passes directly. Here a
quick



summary:







*dummy 56
ohm => all leds on







*remove resistance => A1 leds







*SW1 in test mode and tape switch to enable => Only

leds



1+8 on







* SW1 back to normal => still leds 1+8







* "7 ) confirm that output DC click noise is
within

6V



p-p when power is switched off" => sorry I

don't



understand precisely what to do/ measure?







* Power on again => A1 leds on.















Thanks for your support







Phil















--------------------------------------------







En date de : Mer 28.5.14, Bob Grieb bobgrieb@yahoo.com



[PolySix] <PolySix@yahoogroups.com> a écrit :















Objet: Re: [PolySix] EG and VCF not working after

battery



leakage







À: "PolySix@yahoogroups.com"



<PolySix@yahoogroups.com>







Date: Mercredi 28 mai 2014, 2h09























See if







these functions can be controlled correctly when using







patchesin







memory.  If so, then the output from the CPU to the



analog







circuitsis







OK.   Then you have a problem with reading the







controls.But







if the sound is always the same with all programs,
then



the















output







circuit is bad and maybe t is reading from the pots







OK.Did







you try the DAC calibration test in the manual?  It



would







be helpfulto







know if that is working OK.  Just the part where you

try



to







get the







two







LEDs to light up.







 







Bob























From:







"phil0065@yahoo.fr [PolySix]"







<PolySix@yahoogroups.com>







To:







PolySix@yahoogroups.com







Sent: Tuesday, May 27,







2014 6:02 PM







Subject: [PolySix] EG







and VCF not







working after battery leakage















































Bonjour !I am







French







and happy to join this group of Polysix owner. My old







Polysix bought back in







1983 has been sleeping in the attic since 1990,
until
I



have







returned back now to







my first
love. Unfortunately I have discovered the



battery







leakage problem !







So I did







the standard procedure (like many)Spend a







lot of time checking the lines on KLM-367 with plenty

of



leds on at start







up.. Browse internet for hours (discover service







manual, old crown, etc)…, change IC







30 & 31 … recheck continuity, still few leds







on..Recheck again, change all set of







panel switches (vintage planet)..4 leds on... Bank B

not







working...Check







lines again, to get finally only leds A1







on start up. Great !







Unfortunately sound







is not OK.







Tune seems







OK,







6 voices are OK, voltages from power board are OK
(15V,



5V







-5V and -15V) all pots







and switches seem to work except the 4x EG and 4x VCF



pots







which are not







active! I think at







this stage it is useless to do the calibration

procedure.



Is







there some indications,







checking to start with to define if it is still a







line/continuity problem or if electronic parts (IC,



diode..)







should be changed.







Thanks in







advance for your help























Phil























































































































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

Re: SV: [PolySix] EG and VCF not working after battery leakage

2014-06-04 by Bob Grieb

I am starting to think that trying to troubleshoot over email without a scope is
not such a good idea.   If having LED 3 on affects "C" LED, this implies
an issue with the enables to IC4,5 and IC2,3.   So now I would check resistance
to IC3-6 and 7 on KLM-371 to same signals on KLM367.  P26 and P27.

IC10 and IC11 pin 1 should be the same voltage as pin 3 on each chip.
If not, then either the op amp is bad, or something is shorting the output
to this voltage.  Maybe unplug CN05 on KLM-367 which is the only
place these signals go.  If the voltages are still so high, then replace the
op amps.  

The IC18 circuit is a sample and hold one.   The DAC connects to each of
the caps in turn, through the mux (IC18) to refresh the voltage on the cap.
But the cap voltage should be limited to +/- 5V, and you should have the
same voltage after the op amp.

   Bob

From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Sent: Wednesday, June 4, 2014 6:14 PM
Subject: Re: SV: [PolySix] EG and VCF not working after battery leakage

 
Bonjour les amis Polysix,

1) Concerning the problem with led C+3, I have rechecked continuity between IC without success (cold and warm check). Precisely I have checked between IC31-8 and all the follwoing:
 Board 367 (Ic33-10 ic26-4 ic28-14 cn6-5 cn10-2)
 Board 371 (ic2-6 ic4-6)
 Board 370 (sw2-0)

All continuity seem OK. 
Anyway problem with C3 is not clear. It could appear after 30s warm up  or never (If I do nothing ?), unless I switch apparently effect mode buttom or led 3. It disappears if I select "manual" ... Then selecting "1" again make C3 disappear until I select "3" and then "C" light up directly ...?
 
2) For the "high" voltage please find an update of the reading (done at normal setting as shown in service manual, figure1 and manual switch on):

IC10-1   13,46
IC10-2   13,46
IC10-3   NOT STABLE  ~0,2?
IC10-4   -14,99
IC10-5   3,173
IC10-6   3,206
IC10-7   3,206
IC10-8   14,94
  
IC11 is too high too?               
IC11-1   14,2
IC11-2   14,2
IC11-3   NOT STABLE ~0,38
IC11-4   -14,99
IC11-5   3,174
IC11-6   ~3,2
IC11-7   ~3,2
IC11-8   14,94
 
SO I have checked the following (in case...):        
IC16-1   3,18
IC7-1     3,212
IC7-7     3,16
IC9-1     3,18
IC12-7   2,2
IC12-1   2,21
IC13-1   2,21
IC13-7   2,22
IC14-7   2,22

3) For the usb -scope I have try to join as an example a screen copy of the signal found at TP5 equivalent to figure 2 
"observe connector CN3-5 on oscilloscope"

 
Thanks again for your support and comments
Phil

Le Mercredi 4 juin 2014 4h32, "Bob Grieb bobgrieb@yahoo.com [PolySix]" <PolySix@yahoogroups.com> a écrit :


 
 Phil,
 
   You said you have 13.56 volts on IC10-1.   This is very strange.
Please check to see if pins 1 and 2 of this chip are connected as they
should be.   Do you see the same voltage on pin 2?    Also, measure the
voltage on pin 3.  With the output connected to the inverting input,
this op amp is a voltage follower.   The output should match the input
(at pin 3)  Pin 3 should never go beyond +/- 5 volts, since it is fed
from IC18 which has those as its power rails.   So something odd is happening
here.  Or maybe that op amp is just toast.  It seems like the output is
just sitting at its positive output limit.
 
    Bob

From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Sent: Tuesday, June 3, 2014 5:16 PM
Subject: Re: SV: [PolySix] EG and VCF not working after battery leakage


 
Hi
My KLM 367 repairing may not be good enough as I realize on Sunday that after 5-10 minutes of warming I have additional leds along with A+1 (led 3 then C+3 are also flashing). Disappointing..

I spend many time rechecking the board without success. After some cool down, when I switch ON, only leds A1 are on but after some timeof warming  C + 3 are coming back plus a noisy sound. 

Please find also an update on the voltage:

Does IC10 have -15 on pin 4?   => -15V

Does IC18 have +5 on pin 16  and -5 on pin 7? => Yes  +5V and -5V

I have also recheck the DAC calib. 
Cut off set to 10 => led 1+8

Cut Off from 0-8 => led 1+5
 Speed intensity 0-6 => led 1+8
Speed intensity 7-10 => led 4+8
  
Today unfortunately I do not have access to a proper oscillo. I will check what I can do with this simple USB oscillo, but I did try already and manage to get for example the correct shape for the figure 2 in the adjustment procedure (20 msec). I will send a screen copy in a next mail
Thanks
Phil

Le Mardi 3 juin 2014 14h03, "'Hans' hr.public@lonningdal.net [PolySix]" <PolySix@yahoogroups.com> a écrit :


 
Hi
 
From my own experience a scope based around a USB sound card they’re only useful up to approx. 5200Hz.
 
There are ways around this by implementing a simple sample and hold circuit to the input. But this circuit has to be synced with the ADC clock which complicate things. I’ve not investigated this further, but my guess this is how many low priced digital scopes is manufactured.
 
-hans
 
Fra:PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com]
Sendt: 3. juni 2014 13:48
Til: PolySix@yahoogroups.com
Emne: Re: [PolySix] EG and VCF not working after battery leakage
 
 

Hi Phil,
 
   If you plan to use that USB DAC as an oscilloscope, I don't think
it will work very well.   It's more of a data sampler, than a scope, it seems.
It doesn't sample fast enough to show the waveforms in a processor-based
synth.   You need something with at least 10-20 MHz bandwidth, and really
at least 60 MHz would be much better.
 
     Bob
 
From:"Phil65 phil0065@yahoo.fr[PolySix]" <PolySix@yahoogroups.com>
To: PolySix@yahoogroups.com
Sent: Friday, May 30, 2014 6:54 AM
Subject: Re: [PolySix] EG and VCF not working after battery leakage
 
 
Thanks Bob and Johannes

I am off for the week end with family, but managed to take only the KLM 367A board and VM (shh!, don't tell my wife she doesn't know....)
I have checked all connections on IC23 and are OK. I will update on voltage on Sunday night..

Also I have managed to get a USB oscillo (data acquisition board) with dedicated software (tracerDAQ). Precisely:
http://www.mccdaq.com/usb-data-acquisition/USB-1208FS.aspx

much better than nothing, so I should be equipped for the next stage... (still in learning phase anyway !)
Thanks for your support
Phil

--------------------------------------------
En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com[PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery leakage
À: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Date: Jeudi 29 mai
2014, 14h49

 

Sorry for
the multiple emails.  In DAC calibration
mode,you
should be able to turn the cutoff and see the lit LED move
from 5-8as
you turn it.   Likewise, you should be able to move the
speed/intensity potand
see the other lit LED move from 1-4.  
Bob

From:
"Phil65 phil0065@yahoo.fr[PolySix]"
<PolySix@yahoogroups.com>
To:
PolySix@yahoogroups.com
Sent: Thursday, May 29,
2014 4:47 AM
Subject: Re: [PolySix]
EG and VCF not working after battery leakage

 

Looking at the klm367 schematic, I understand now
your point with the
connections between pins and signal P20,
P21 and P22 but I had some diffuculty to cross link that
information
with the PCB drawing... until I realize that i
was counting incorrectly the pins while I did know that it
was from top right then CCW

Do what I say, not what I do... I was correct for top side
numbers but reverse for the bottom side i.e i did restart
with 9 below 1... Stupid!

So now I do have the following:

P22 IC18-9 IC19-9 and IC22-23  => OK

P21 IC18-10
IC19-10 and IC22-22 => OK

P20 IC18-11 IC19-11 and IC22-21  => OK

INH IC19-6 and IC23-10 => OK

"X" IC18-3 and IC19-3 and IC27-1
=>OK

I did recheck my previous post to correct them in light of
my wrong pin counting

1) I did the DAC calib again and turning
VR6 CCW => from
led 8 to led 7 6 then 5, while turning VR7 CCW from led 8 to
7 then 6

OK

2) pin 3 of IC18 and pin 1 of IC27, OK

OK

3) pin 6 of IC18 and IC23-4. OK

OK

4) pins 9,10 and 11 of IC18 and 19 should be connected to
each other and to IC22 ?

UPDATED: Wrong comment see above!

5) With power on, you should be able to vary a front
panel

control,such as filter cutoff, and see IC7 pin 7 change
voltage as you

do it (in manual mode).

3.177V => 3.120V cut off from 10 to 0 with all controls
at normal setting

UPDATED: Luckily correct, I
did measure in fact pin 6 but it
is strapped to pin 7...

6) when you select different patches, you should see the
attack at IC10-1decay

=> On IC 10-1 no change always 13.56V

UPDATED: Correct measurement

7) Decay at IC10-7 ?

=>slight variation between patches. In manual mode and
normal setting with decay control from 0 to 10 => 3.240V
to 3.346V

UPDATED: Again Luckily correct, I did measure in fact pin 6
but it is strapped to pin 7...

I apologize for my mistake and
thanks again for your
patience and your support.

Phil

--------------------------------------------

En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com
[PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after battery
leakage

À: "PolySix@yahoogroups.com"
<PolySix@yahoogroups.com>

Date: Jeudi 29 mai 2014, 3h28

These should be

connected:

IC18-9 IC19-9 and IC22-23  this

is signal "P22"

IC18-10 IC19-10 and IC22-22 

this is signal

"P21"

IC18-11 IC19-11 and IC22-21 

this is signal
"P20"

IC19-6 and

IC23-10

Also, IC18-3 must connect to

IC19-3 as well as to IC27-1 which you checked already.

You may want to download the

service manual as it is available forfree on the web, and
see the

schematic for KLM-367.

If IC18
and IC19 are not

connected properly, the control voltages

won't work

correctly.

Please ignore IC22 pins 5, 19,and

35.    They are not related to

this discussion.  We are

checking A B C and INH signals to IC18 and

IC19.

   Bob

From: "Phil65

phil0065@yahoo.fr[PolySix]"

<PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Wednesday, May

28, 2014 7:55 PM

Subject: Re: [PolySix]

EG and VCF not working after battery leakage

 

Hi Bob,

You are really helpfull. Merci !

1) I did the DAC calib again and turning VR6 CCW =>
from

led 8 to led 7 6 then 5, while turning VR7 CCW from led
8

to 7 then 6

2) pin 3 of IC18 and pin 1 of IC27, OK

3) pin 6 of IC18 and IC23-4.  OK

4) pins 9,10 and 11 of IC18 and 19 should be connected to

each other and to IC22 ?

  It seems I have a problem here. I found only IC18-9 +

IC19-9 + IC22 -5 , IC22-19 and IC22-35 connected
together.

Nothing between IC18-10 (IC18-11) with any pin of IC19
or

IC22 ??

Shall I strap IC18-9 + 10 + 11

5) With power on, you should be able to vary a front

panel

control,such as filter cutoff, and see IC7 pin
7
change

voltage as you

do it (in manual mode).

3.177V => 3.120V cut off from 10 to 0 with all
controls

at normal setting

  

6) when you select different patches, you should see the

attack at IC10-1decay

=> On IC 10-1 no change always 13.56V

7) Decay at IC10-7 ?

=>slight variation between patches. In manual mode
and

normal setting with decay control from 0 to 10 =>
3.240V

to 3.346V

Thanks for
your help, really appreciated !

Phil

--------------------------------------------

En date de : Jeu 29.5.14, Bob Grieb bobgrieb@yahoo.com

[PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after
battery

leakage

À: "PolySix@yahoogroups.com"

<PolySix@yahoogroups.com>

Date: Jeudi 29 mai 2014, 0h21

 

Hi Phil,

    

If you are seeing LEDs 1 and 8 in DAC calibration mode,

that

impliesthat

the DAC and the input muxes are
working.   Another

thing

to try -

in

the DAC calibration test mode, turn the two controls

that

you were supposedto

set for this test, and you should see the LED's

change.

   

Don't worry about the click noise test for

now.

   

The voltage demux for controlling the EG and the VCF is

mostlyIC18

(4051).   I would
check with the ohmmeter that you

have

good connections(with

the power off, of course) between pin 3 of IC18 and pin
1

of

IC27, and between

pin

6 of IC18 and IC23-4.  Also, pins 9,10 and 11 of IC18

and

19 should be connectedto

each other and to IC22.  

   

With power on, you should be able to vary a front panel

control,such

as filter cutoff, and see IC7 pin 7 change voltage as

you

do it (in manual

mode).  

And when you select different patches, you should see

the

attack at IC10-1decay

at IC10-7, etc changing with different patches.  Be

careful

when probing with

the

power on not to short anything or you can damage chips
in

an

instant.  Use the gndtest

pt for the meter black or negative lead.

   

Tell us what you measure at these points in the circuit

and

if they vary with the

corresponding

front panel control in manual mode, or when you change

patches.

   

Bob

From:

"Phil65 phil0065@yahoo.fr[PolySix]"

<PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Wednesday, May

28, 2014 6:05 PM

Subject:
Re: [PolySix]

EG and VCF not working after battery leakage

 

Thanks Bob for your quick answer !

Seems that my patch looses "EG" from memory.
I

have no
sound unless I put the VCA switch from EG back

to

"square" again to get some sound.

Not sure to keep the bank memory even when polysix is

still

on.

I did the procedure and it passes directly. Here a
quick

summary:

*dummy 56
ohm => all leds on

*remove resistance => A1 leds

*SW1 in test mode and tape switch to enable => Only

leds

1+8 on

* SW1 back to normal => still leds 1+8

* "7 ) confirm that output DC click noise is
within

6V

p-p when power is switched off" => sorry I

don't

understand precisely what to do/ measure?

* Power on again => A1 leds on.

Thanks for your support

Phil

--------------------------------------------

En date de : Mer 28.5.14, Bob Grieb bobgrieb@yahoo.com

[PolySix] <PolySix@yahoogroups.com> a écrit :

Objet: Re: [PolySix] EG and VCF not working after

battery

leakage

À: "PolySix@yahoogroups.com"

<PolySix@yahoogroups.com>

Date: Mercredi 28 mai 2014, 2h09

See if

these functions can be controlled correctly when using

patchesin

memory.  If so, then the output from the CPU to the

analog

circuitsis

OK.   Then you have a problem with reading the

controls.But

if the sound is always the same with all programs,
then

the

output

circuit is bad and maybe t is reading from the pots

OK.Did

you try the DAC calibration test in the manual?  It

would

be helpfulto

know if that is working OK.  Just the part where you

try

to

get the

two

LEDs to light up.

 

Bob

From:

"phil0065@yahoo.fr [PolySix]"

<PolySix@yahoogroups.com>

To:

PolySix@yahoogroups.com

Sent: Tuesday, May 27,

2014 6:02 PM

Subject: [PolySix] EG

and VCF not

working after battery leakage

Bonjour !I am

French

and happy to join this group of Polysix owner. My old

Polysix bought back in

1983 has been sleeping in the attic since 1990,
until
I

have

returned back now to

my first
love. Unfortunately I have discovered the

battery

leakage problem !

So I did

the standard procedure (like many)Spend a

lot of time checking the lines on KLM-367 with plenty

of

leds on at start

up.. Browse internet for hours (discover service

manual, old crown, etc)…, change IC

30 & 31 … recheck continuity, still few leds

on..Recheck again, change all set of

panel switches (vintage planet)..4 leds on... Bank B

not

working...Check

lines again, to get finally only leds A1

on start up. Great !

Unfortunately sound

is not OK.

Tune seems

OK,

6 voices are OK, voltages from power board are OK
(15V,

5V

-5V and -15V) all pots

and switches seem to work except the 4x EG and 4x VCF

pots

which are not

active! I think at

this stage it is useless to do the calibration

procedure.

Is

there some indications,

checking to start with to define if it is still a

line/continuity problem or if electronic parts (IC,

diode..)

should be changed.

Thanks in

advance for your help

Phil

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Re: SV: [PolySix] EG and VCF not working after battery leakage

2014-06-24 by Phil65


Hi,
It has been some time since my last email and I would like to update on my P6 issue with no sound except in EG square position. 
Eventually Bob were right, IC10 and IC11 were dead. Changing  both of them solved by initial problems (even bank c and 3 issue have been cleared). 

Now my remaining problem is a noise problem when playing the polysix (not always but sometimes). I believe this can be described more as a scratchy sound problem, like a faulty pot, cap, transistor or line. 
Is there a way to directly spot the origin of problem? I have started the calibration procedure and completed the KLM367 checking without problem?

Thanks for your advice!
Merci
Phil



De : "Bob Grieb bobgrieb@yahoo.com [PolySix]" <PolySix@yahoogroups.com>
À : "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Envoyé le : Jeudi 5 juin 2014 0h53
Objet : Re: SV: [PolySix] EG and VCF not working after battery leakage

 
I am starting to think that trying to troubleshoot over email without a scope is
not such a good idea.   If having LED 3 on affects "C" LED, this implies
an issue with the enables to IC4,5 and IC2,3.   So now I would check resistance
to IC3-6 and 7 on KLM-371 to same signals on KLM367.  P26 and P27.

IC10 and IC11 pin 1 should be the same voltage as pin 3 on each chip.
If not, then either the op amp is bad, or something is shorting the output
to this voltage.  Maybe unplug CN05 on KLM-367 which is the only
place these signals go.  If the voltages are still so high, then replace the
op amps.  

The IC18 circuit is a sample and hold one.   The DAC connects to each of
the caps in turn, through the mux (IC18) to refresh the voltage on the cap.
But the cap voltage should be limited to +/- 5V, and you should have the
same voltage after the op amp.

   Bob

From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Sent: Wednesday, June 4, 2014 6:14 PM
Subject: Re: SV: [PolySix] EG and VCF not working after battery leakage

 
Bonjour les amis Polysix,

1) Concerning the problem with led C+3, I have rechecked continuity between IC without success (cold and warm check). Precisely I have checked between IC31-8 and all the follwoing:
 Board 367 (Ic33-10 ic26-4 ic28-14 cn6-5 cn10-2)
 Board 371 (ic2-6 ic4-6)
 Board 370 (sw2-0)

All continuity seem OK. 
Anyway problem with C3 is not clear. It could appear after 30s warm up  or never (If I do nothing ?), unless I switch apparently effect mode buttom or led 3. It disappears if I select "manual" ... Then selecting "1" again make C3 disappear until I select "3" and then "C" light up directly ...?
 
2) For the "high" voltage please find an update of the reading (done at normal setting as shown in service manual, figure1 and manual switch on):

IC10-1   13,46
IC10-2   13,46
IC10-3   NOT STABLE  ~0,2?
IC10-4   -14,99
IC10-5   3,173
IC10-6   3,206
IC10-7   3,206
IC10-8   14,94
  
IC11 is too high too?               
IC11-1   14,2
IC11-2   14,2
IC11-3   NOT STABLE ~0,38
IC11-4   -14,99
IC11-5   3,174
IC11-6   ~3,2
IC11-7   ~3,2
IC11-8   14,94
 
SO I have checked the following (in case...):        
IC16-1   3,18
IC7-1     3,212
IC7-7     3,16
IC9-1     3,18
IC12-7   2,2
IC12-1   2,21
IC13-1   2,21
IC13-7   2,22
IC14-7   2,22

3) For the usb -scope I have try to join as an example a screen copy of the signal found at TP5 equivalent to figure 2 
"observe connector CN3-5 on oscilloscope"

 
Thanks again for your support and comments
Phil

Le Mercredi 4 juin 2014 4h32, "Bob Grieb bobgrieb@yahoo.com [PolySix]" <PolySix@yahoogroups.com> a écrit :


 
 Phil,
 
   You said you have 13.56 volts on IC10-1.   This is very strange.
Please check to see if pins 1 and 2 of this chip are connected as they
should be.   Do you see the same voltage on pin 2?    Also, measure the
voltage on pin 3.  With the output connected to the inverting input,
this op amp is a voltage follower.   The output should match the input
(at pin 3)  Pin 3 should never go beyond +/- 5 volts, since it is fed
from IC18 which has those as its power rails.   So something odd is happening
here.  Or maybe that op amp is just toast.  It seems like the output is
just sitting at its positive output limit.
 
    Bob

From: "Phil65 phil0065@yahoo.fr [PolySix]" <PolySix@yahoogroups.com>
To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Sent: Tuesday, June 3, 2014 5:16 PM
Subject: Re: SV: [PolySix] EG and VCF not working after battery leakage


 
Hi
My KLM 367 repairing may not be good enough as I realize on Sunday that after 5-10 minutes of warming I have additional leds along with A+1 (led 3 then C+3 are also flashing). Disappointing..

I spend many time rechecking the board without success. After some cool down, when I switch ON, only leds A1 are on but after some timeof warming  C + 3 are coming back plus a noisy sound. 

Please find also an update on the voltage:

Does IC10 have -15 on pin 4?   => -15V

Does IC18 have +5 on pin 16  and -5 on pin 7? => Yes  +5V and -5V

I have also recheck the DAC calib. 
Cut off set to 10 => led 1+8

Cut Off from 0-8 => led 1+5
 Speed intensity 0-6 => led 1+8
Speed intensity 7-10 => led 4+8
  
Today unfortunately I do not have access to a proper oscillo. I will check what I can do with this simple USB oscillo, but I did try already and manage to get for example the correct shape for the figure 2 in the adjustment procedure (20 msec). I will send a screen copy in a next mail
Thanks
Phil

Le Mardi 3 juin 2014 14h03, "'Hans' hr.public@lonningdal.net [PolySix]" <PolySix@yahoogroups.com> a écrit :