> Whenever I have the A170 on the same bus board as the A190, the A190
> outputs a continuous gate signal, which cannot be broke unless the slew
> is removed from the bus board. The gate singal is present even without
> a note from the keyboard.
>
> After moving the slew into a different rack, there are no longer any
> problems. Just a little curious about it though, anyone have any
> thoughts

Please remove the A-190. If then the gate signal is still available at the
bus there's probably a fault on the A-170 board (e.g. a short circuit
between one of the pins that lead to the gate lines of the A-100 bus, and
any other pcb track). If it happens only if the A-190 is connected I have no
idea what could be the reason.

Best wishes
Dieter Doepfer