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GX-1
(S/#
5030~
)
(Master Generator)
Circuit Diagram
Circuit
Key
voltage preamplifier
(to increase
the 4.0V
=
3
key voltage at terminal K by 10%4
=
aA
=l[o
=
&
=
Sound source Selection Switching
eo
~
i .
Key Voltage
g
wo
=
z
and Lever Control(by VCA) Circuits
from KAS okt.—»
°
] ?
rt
120K
ee
e319,
618n
Tard
deciped
by
NI(36)
r-@
1
tioas! bf the
:
Lnoise Signal from RHY-5
l
=
ckt
|
=
\4
!
3
--—}
me
a
3
i
$
MS
c k t
ol
~
=
&
17
ont
—
MN
(53)PBO——+
Fc +Ba
3
+O
62(34)
'
«
x
:
3
ea
iL
Triangle wave
'
'
ic
| |fretert]
1
=
=
'2
| !
T
}
throuth the doubler (2f)
2
.
1
8
SSS
SSaS ons
eO——+
13
[ees] f
e
Pitch Bend ckt.
&
(6) TRO
N
rie
G3(33)
:
Square Wave through High pass
FET3
4.7K
Filter
Cis
Z~0 64(32)
(75) #C13
-
s felis
$8
41x
Saw Tooth Wave through Band
Pass
sie
as
sane
m
Filter
—t
[4,for
Tri
AA
bo
~O G5(31)
(76)#C14
7
:
=
x
am
$3
Sine Wave
1
OF
FETS
—I5
5
O13
tris
tee
cise)
Et
aa
(28) AMO O-+0 30%
Triangle wave
le
§
47k
g
Square Wave
F
doubler
FETs
-1s
4:7K
Di
Tri6
~O G7(239)
rn
"
g
47k
é
Saw Tooth Wave
a
Keyboard Voltage follower signal
Lg
-s
oO
E
travelling
(67)
O E
:
+15
VOA
:
VAT
T
a
ea
6 7 ) RMI O-f070-
Mt _ NGELBE...
aie
5
5
=
for Subosc
5
:
a
vel
(4)
sie
jae
3
m e e
ee
(26)01 ©
pe
ivee
4
Sty
tox
| 83
—
.
I Fi | o>
{0.2
=) out
ie
|
shh
r i }Os01@) "Som
a
i
+15
<>
x
=<
'
'a
ag
$83
xzx
is
=
x}
3x
Sg
(23)1 ©
-
re
F
i :
=
a
545%
|
(22)12 O—
100/16
Re
E
:
(21)13 O
x
x3
7
=
x
(20)t4 O
3
S
3
te
(16)15 ©
2
L
-
a
-OLC1(61
(15) 16 O-
=
0 500A
'
(1717 ©
eee
Seles),
VCOAEG
|
ke
© L.02(56)
———s
e e e
#
(9)
y
'Ee
47k
e tye
13
ENO
Uti'<'
'"$R'(SCSC'"iQCOCti'('(CS:C*CS;CPSA
pnw nee
S
e
=
s
x
Fi
(27)04 O—
=
zenee
pep
Eg
1
&
i
ieee]
!
cee
|
| tox
3 =
| 226.3
zes!
~
SKS
Tri8
s>
:
.
+4
AO
g
F
3
x
&
-15
%
Voltage amplitude
'
z
;
6
=|
=
1
28
ee
}
eine
ofa wrote VCA
—
ar
—L4——_+0
(19) #9
°
-
(Voltage to Current)
current of this
'
E
+
as
a
4
ae
=
2
KEC-325 1-55
(39) (40) (79) (80)
(37) (38) (77) (78)
(1) (2) (3) (41) (42) (43)
Diode Conbination
|
for
for |
for
RowI}
Row Il}
Solo
D 27
ae
J
<
D 28 || X
cS
es
Dali
X}|O | X
Dx» |}O|O | X
D 31
C)
x
*
D 32
C)
&)
~
Note 14)
I
MU1, ML1, MP1
i
MU2, ML2, MP2
Ss
MS
Diode D027 ~ D32
are
in accordance with
the above table.
Notes)
1.
Transistor
Tr3 @6 17 18, 21,23 ~27
= : 2SC458 (C)
Tr11 ~ 16 19, 20,22
: 2SA561
(Y)
a
Fer
FET2 ~8
: 2SK30A
(Y)
a
1G
1C1, 7, 8,
: TA7504M
IC3 ~6
: CA3080
4.
Diode
: 182473VE
5.
Volume
VR2
: 3006P
VR1, 3~6,9,11, 14~ 18
: 3321H
6.
Resistor
@® marked:
metal film resistor 0.1%
©
marked:
MR-25 + 2%
7.
Reley RY1~6
: TRA-102
8. Note8
= :for MP only
9. MS : J2 and J3 are closed, J1 is opened.
MU, ML, MP:
J1 is closed.
10. [Note 10-1]
: for MS only
[10-2 J]
: for MU, ML, MP ckt.
11. [Note 11}: for MS only
12.
—#—_
:
Tantalum
Capacitor
13. [Note 13]
: This circuit is not used for
MS circuit Board, Therfore,
and
should be connected.
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