Casio CZ/ VZ/ FZ - Pro Series

The K16 path is involved with other switches : preset 6, internal, DCW1 env, DCW2 env
and enventualy all the F and B keys ...

And guess what ? all of them don't work ! :))

I've checked the line from the key board/preset board/synth board
to the main board and right to the 74hc241 tri state buffer's pin 13 (2A2)
where the K16 ends and it's ok... so the problem is beyond this chip


--- In CZsynth@yahoogroups.com, "steph_g_87" <stephane.garrigue@...> wrote:
>
> Yeah thx ! I just have to follow the ja7 on the ma1m board
> that leads to the... pin 13 of the 74hc241 tri state buffer
> All I have to do is checking with my multi between the key contact and the chip pin
> thx !!
> 
> 
> --- In CZsynth@yahoogroups.com, Ullrich Peter <peter.ullrich@> wrote:

> > Due to the schematics it looks like the keyboard error has to be on the line KI6 as all 
> > F and B keys are controlled via this line. See schematics page 7.