Casio CZ-1 Service Manual And Spare Parts List page 117

22.
OUTPUT VOLUME CONTROL
CIRCUIT
V
VCA
(M5241L)
±
i
I
•
!
;
- %
t
U.
«»|
U| Q
Output volume
is
controlled
by V
(Voltage Controlled Amplifier)
M5241
The
VCA
amplitude
is
controlled
by
VCA
control signal
which
is
generated
by
VCA
mixer.
a a a o a a
—
cm r) co in
Decoder
SN74CS174N
1
O O O O O O
i
CM CO
*T
lO <D
V
I
ai
ai
o
>
L.iJa.
!
..
Data bus
DO
-ihrrrLZ
From
Mam
CPU
-D5