Doepfer A-100(~ 40 MB) - Manual (Page 168)

A-111 VCO 2 System A - 100 doepfer
14
7. Appendix
The diagram on the right shows the layout of the A-111
main circuit board.
If you want to disconnect the normalled CV 1 socket
from the system bus INT. CV line (see also page 12),
remove Jumper J1 from the circuit board. It is just
under the ribbon cable at the top right of the board. It
will be easier to disconnect the cable before removing
the jumper. Don’t forget to re-connect the cable
afterwards.
If at a later date you want to use the internal CV
connection again, then simply reverse this procedure,
to put the jumper back on.