Lf Circuit Diagram - Yamaha Strings SS-30 Service Manual

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Trigger
TR
K1-TR(68)
(34)
TC
PN1-VR2-2
(VIBRATO-DELAY)
(41)
Orchestra Oscillater
VR33
ORCHESTRA
IG00150
(PN2)
SPEED
VR2
T
(14)
M
(15)
0.6HZ
0.6HZ Oscillater
B
(16)
+15(29)
(30)
E(27)
(28)
-15(25)
(26)
Vibrato OSC
Phase shift
Phase Mixing
0.6HZ~6.2HZ
CP
SS-30 (S/ # l00 l ~ )
Pitch Control,Voltage Mixing
V0
PN1-VR3-3
(32)
(DEPTH)
PC
PN1-VR1A-2
(72)
(PITCH)
VI
PN1-VR3-2
(73)
(DEPTH)
DT
PN1-VR1B-2
(74)
(DETUNE)
φA
RA-OR-φA(32)
(68)
I5
RA-G2-16U(124)
(50)
I6
RA-G2-8L (74)
(47)
I7
RA-G2-16L (123)
(53)
φB
RA-OR-φB(33)
(67)
φC
RA-OR-φC(34)
(66)
+V
PN1-SW-T1
(13)
+15
(55)
E
(56)
-15
(57)
-20-
LF
Circuit Diagram
Sustain Control
U3
PN1-VR5-1
(83)
(SUSTAIN VIOLIN)
L3
PN1-VR4-1
(84)
V1
(SUSTAIN CELLO)
RA-G3-PC(9)
UI
(70)
PN1-VR5-2
(81)
(SUSTAIN VIOLIN)
LI
PN1-VR4-2
(82)
(SUSTAIN CELLO)
FS
RP-EJ2-1
(80)
(FOOT SW)
V2
RA-G4-PC(9)
PN1-VR4-3
-7
(69)
K1--7(74)
(78)
KBD. Split Gate
I1
05
RA-G2-8U(73)
RA-F-L3(25)
(49)
(5)
12
06
RA-G1-8L(68)
RA-F-U2(68)
(48)
(8)
07
I3
RA-G1-16U(125)
RA-F-L2(23)
(54)
(3)
08
RA-F-U2L(80)
(52)
1(9)
4(12)
3(11)
2(10)
Note)
1.
4.
Transistor
IC
IC4
Tr6
: 2SA561
Others: 2SC458
IC9,10: TC4016P
2.
FET
: 2SK30A
Others: NJM4558
5.
Diode
3.
D : IS1555
ZD : 02Z7.5A
U0
K4-S2(67)
(76)
LO
PN1-SW1-T4
(77)
(KBD.SPLIT)
09
RA-F-U3L(81)
(51)
01
RA-F-U3(70)
(6)
02
RA-F-U1(68)
(8)
03
RA-F-L1(22)
(46)
04
RA-F-U1L(79)
(4)
: IG00150
marks Resistor: 1%

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