Schumann PLL PCB corrections.

[digi2t]

The other thread is already pretty heavy, so I'm creating this thread for reference.

This addresses both clone PCB's that UKToecutter produced. Version 1 is the orange board, and version 2 is the blue board. I realize that everyone that bought the first version was subsequently provided a second version, due to errors. Although the second version had two small errors as well, I decided to list all the corrections, for both boards. At least that way, if one wishes, they may recuperate the V.1 boards, and use them to build working PLL's. Here is the list, in point form.

Schumann PLL clone boards corrections;

Version 1 (Orange boards);

CUTS -
- Cut trace from rotary SW2 COM to pin 5 of IC4.
- Cut trace between pin 2, and pin 15 of IC7.
- Cut trace between + of C14, and lug 3 of LAG TIME pot.
- Cut trace between lugs 1 and 2 of RESPONSE pot.
- Cut trace lug 2 of RESPONSE pot, and pin 13 of IC5.
- Cut trace between lug 3 of RESPONSE pot, and pin 9 of IC5.
- Cut trace between lug 2 of RESPONSE pot, and lug 3 of LOOP TRACK pot.

JUMPERS -
- Jumper pin 15 of IC4, to rotary SW2 COM.
- Jumper pin 2 of IC7, to pin 5 of IC4.
- Jumper lug 1 of LAG TIME pot, to + of C14.
- Jumper lug 1 of RESPONSE pot, to pin 13 of IC5.
- Jumper lug 2 of RESPONSE pot, to pin 9 of IC5.
- Jumper lug 2, and lug 3 of RESPONSE pot.
- Jumper lug 1 of LOOP TRACK pot, to lug 3 of RESPONSE pot.

Version 2 (Blue boards);

CUTS -
- Cut trace between lug 2 of RESPONSE pot, and pin 13 of IC5.
- Cut trace between lug 1 of RESPONSE pot, and pin 9 of IC5.

JUMPERS -
- Jumper lug 1 of RESPONSE pot, to pin 13 of IC5.
- Jumper lug 2 of RESPONSE pot, to pin 9 of IC5.

I recommend doing the cuts first, populating the board, and then installing the jumpers, if you haven't already built the board in question.

Cheers,
Dino

[Gigahearts_FX]

thanks for this.