[sdiy] EMS DK2, please help

[Roman]

Hi,

I have problem with EMS DK2 I'm repairing now. I don't exactly know how it really should work.
the symptoms:
1. both CV are 1V/oct and 'tuning spread' doesn't affect anything
2. they are about 0.5V apart. Working OK, but not producing same voltage when only 1 key pressed
3. dynamic range knob doesn't affect dynamic voltage at all

If anyone has DK2 schametics, I would much appreciate sharing with me. The PCB is so twisted I was lost when I tried to draw it from traces. And the way pots are connected suggests that tuning spread and dynamic range pots are really just for show in this keyboard.

So please, could anyone help me with schem, or at least assure what voltages should it generate?

thanks ahead

Roman