All posts tagged mods

File date: April 24, 2010

All slide switches (including transpose and noise) EXCEPT the following:

S8 on later VCF boards
S4, S8 on early VCF boards

All rev VCO boards ok (all switches jumperable), EXCEPT:

S4 (2nd switch from edge) has T3 trimmer wiper hooked to pad.
If this connection is broken, S4 may be jumpered.

Later VCO boards already have S1 jumpered.
Later VCO boards S2 can only be jumpered if traces are cut and R72 hooked directly to center poles of switch.
(Early VCO boards can be jumpered ok for S1 and S2.)

File dated Feb. 28, 2007

IF… your fvs or eight voice wants to skip a voice, especially voice 1, here’s a possible reason.

In the schematics, pin 8 of flip flops (4013’s) U1-U6 are all grounded.
On the keyboard assigner boards, they’re not.
By grounding pin 8 (short to pin 7), it should work correctly.

IC U1 was the one I grounded. Haven’t tried others.