Serge Paperface Restoration - Warren Burt - 2/2

Finally I'm getting around to fixing the Warren Burt Serge Modular.
I think I purchased this synth back in 2013.
http://djjondent.blogspot.com.au/2013/12/the-warren-burt-sergedriscoll.html
Sorry Warren that its taken so long to get started.

This is the second panel from the second box.

Panel 2 of Box 2:
• 1 Dual Positive Slew
• 1 Dual Negative Slew
• 2 Envelope Generators
• 1 Triple Bi-directional Router
• 1 Triple Comparator
• 1 Schmitt Trigger 

----The power supply for this panel consists of  +12, -12, +6, & ground

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Schmitt Trigger & Triple Comparator

...

The Blue wire seems to be ground. (marked as "W" on PCB)

The Green is I think +6V (Marked as "Y" on the PCB)

The PCB is labelled R11 

Below are some extra pics I have from a surplus vintage PCB.

Might be of use.

Links:

1. Muffs1

2. Muffs 2 - serge in euroack format

3. CGS - Ken Stone

4. SergeModularMusic

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Bi directional router

This is marked as R4 on the PCB.

'''''

Links:

Muffs 1

CGS - Ken Stone

Original vintage set up notes. 

Serge Modular - KS

 Double check the wiring by looking at what the pads are labeled.

X=+VE

W=0V

Z=-VE

In this case, 

The blue wire at the bottom is -12V

Red is +12V

There is no 0V/GND connection to this module.

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Envelope Generator. We have 2 of these

The boards are I believe 1st generation ... from 1973

http://www.serge.synth.net/modules/index.html

Links:

CGS - Ken Stone

Serge Fans

 Double check the wiring by looking at what the pads are labeled.

X=+12V

Y=+ 6V

W=0V

Blue (near the pots is marked W on the PCB) is ground.

Red (X) = +12V

Green (Y on PCB) = ??? My guess is its +6v.

Below are some pics from an extra Envelope Generator PCB. Its marked R7 so 

is possibly also 1st generation, 1973.

This is not part of the Warren Burt pile but it might help me work things out.

Lovely dark blue colour too.

I think this is a voltage divider circuit to create 6V from 12V.

http://cgs.synth.net/modules/cgs96_comp.html

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Negative slew

Links:

1. SergeSynth.net

2. CGS

3. Muffs

The 1973 PCB used +12, +6, -12 & ground.

The 1975 PCB used +/-12 V & ground.

So I'm guessing this is a 1975 PCB  as it uses +/-12 & 0V unless it has a on board 6V regulator.

The upper slew was working.

But not the lower. So i needed to trouble shoot this.

http://djjondent.blogspot.com.au/2017/07/paperface-serge-negative-slew.html

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Positive Slew

Links:

1. SergeModular.net

2. CGS

This module appears to need +/-12V, +6V & ground

 The PCB is labelled R10.

X= +12V

Y= +6V

W= 0V

Z= -12V