Casio CZ/ VZ/ FZ - Pro Series

> Ok, so it was the right decision to connect 8 with 4 and 9 with 13... it
> crackles a little when turning on the synth, but I think it's easier then
> replacing the chip
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if the relay is not doing what it should, it probably has it's inputs
going to the dummy-load. if you remove the relay, and just run wires
around it, you may notice an increase in output level.

it seems that the relay is there to mute the outputs while the synth is
turning on, and in an unstable state.


> (what is the right english name for a "electrical
> triggered switch", "Relay" ???)
===================================
if there's one, it's a relay.
more than one, are relays.



> Another thing, there are 3 adjustable resistors on the same board, one is
> for the headphone output but I haven't found out what the other two (sitting
> close to each other) for. I may have changed their value while trying out
> what causes the output to have problems. It would be nice if you look up
> their purpose?
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VR1 - ouput levels (headphone & main outs)
VR2, VR3 control the "VCA Offset Voltage"

i posted a crappy picture of the circuit here:
(i don't have a scanner)
		http://smasher.suspicious.org/casio-cz/vca.jpg

pins 3 of the M5241L is analog ground.
pin 1 of LA6462D-2 (labeled C).
pin 7 of LA6462D-2 (labeled D).

use a digital volt-meter, or an analog meter only if it has high-impedance
inputs.

while the unit is making no sounds;
with one probe on pin 3 of the M5241L, put the other probe on one of the
other test-points, [C] or [D], and adjust so that the voltage is less than
3mV.
repeat for both test-points.

it seems that VR3 would adjust test point [C], but the manual says it's
the other way around?

	...atom

----------------Void-If-Detached----------------
http://smasher.suspicious.org/fs1r  Yamaha FS1R

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