100m info?
|||| Philip ||||
thelab at sprint.ca
Mon Jan 3 19:03:44 CET 2000
HI all,
Just re-subscribed again...happy new year. I finally got my first modular.
It is a System 100m "D" package. It includes a Dual VCO, Dual VCF, Dual
ENV/LFO, Dual VCA and a RingMod/Noise/S&H/LFO modules.
Since it is from 1980 it needed a good cleaning of it's jacks, sliders and
switches. I just finished the 112 Dual VCO module and it now patches/adjusts
perfectly. Being a stickler for accuracy, I would like to calibrate each
module. I did find some schematics on the Music Machines page however they
seemed incomplete and difficult to read.
Does anyone have access to the 100m schematics? Could they tell me the
purpose of each trimmer pot? (see my data below)
Since there is no silk-screen on the board, here is a rough ASCII layout:
112 Dual VCO Circuit Board Trimmers (component sides)
_____________________________ ____
| | | |
| | | O O|
| OO | | ___ |
| O O |
| |
| O O|
| O |
| O |
| O |
| |
| |
| OOO |
| O O |
| O |
|____________________________ |
_____________________________ _____
| | | |
| | |16 17 |
| 1 2 | |_____|
| 3 4 |
| |
| 5 6 |
| 7 |
| 8 |
| 9 |
| |
| |
| 10 11 12 |
| 13 14 |
| 15 |
|____________________________ |
Here is what I gathered from the MM info (please correct mistakes and fill
in 7):
1. VCO1 Width
2. VCO1 Hi-Freq Trim
3. VCO1 Range Trim
4. VCO1 Tune
5. VCO1 Tri Peak Symmetry
6. VCO1 Pulse 50% trim
7. ????
8 VCO1 Pulse 10% trim
9. VCO2 Pulse 10% trim
10 VCO2 Range Trim
11.VCO2 Width
12.VCO2 Hi Freq Trim
13.VCO2 Tune
14.VCO2 Tri Peak Symmetry
15.VCO2 Pulse 50% trim
16. VCO2 Tune
17. VCO1 Tune
BIG THANKS!
Philip Pilgrim
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