G1 Circuit Diagram - Yamaha Strings SS-30 Service Manual

SS-30 (S/ # l00 l ~ )
Master
OSC
f= 62.5KHZ
1(6)
RA-G3-14(17)
14(9)
Master
OSC
f= 62.5KHZ
2(7)
RA-G3-24(26)
24(10)
DE(3)
RA-G2-DE(5)
RA-G4-DE(5)
-26(4)
RA-G1--26(62)
DC--26
-9(58)
RA-G2--9(60)
RA-G3--9(60)
-26(62)
RA-G2--26(3)
RA-G1--26(4)
-12-
G1
Circuit Diagram
Divider
C2 Key
ATTACK SLOW- OFF
Divider
-15V Regulator -8.2V Regulator
Gate and Sustain time Control
C0
(32')
C#0
(42')
D0
(54')
D#0
(52')
F0
(40')
F#0
(50')
E#0
(48')
G0
(38')
G#0
(36')
A0
(46')
A#0
(44')
B0
(34')
C1
(30')
SUSTAIN -MIN
C1
K1-D1(26)
(28')
C#1
K1-D2(24)
(16')
D1
K1-D3(22)
(2')
D#1
K1-D4(20)
(5')
E1
K1-D5(18)
(18'
F1
K1-D6(16)
(7')
F#1
K1-D7(14)
(10')
G1
K1-D8(12)
(20')
G#1
K1-D9(10)
(22')
A1
K1-D10(8)
(
12')
A#1
K1-D11(6)
(14')
B1
K1-D12(4)
(24')
C2
K1-D13(2)
(26')
C3 Key
ATTACK SLOW-OFF
SUSTAIN -MIN
Note)
1. Transistor Tr1
2. Diode
3. IC
same numbers are connected in common.
(125)16L
RA-LF-I3(3)
(124)16U
(68)8L
RA-LF-I2(7)
(69)8U
2SA509:
ZD : 02Z8.2A
others : IS1555
IC1, 2 : YM25400
IC3~6 : LM3211