Svu Circuit - Yamaha CS-60 Service Manual

CS60(S/# 1001-
)
SVU
Circuit
Board
El B1 CI
VR2
VR3
K03
pi
Pol
pi
s
i
tjj.
B,K
&
B,K
d~b*l
|i™
UUIilHUIIUUliJUlUH]!] U U H
1]
E12 E7 D12 C12 B7 C7 E6 B6
C6 P6 P5 P4 P3 P2 G1
Adjustment
(VR721) J~L_(VR724)
n_
+ 15V E- —I -6.5V I— —I
(VR722)
-15V
(VR723)
+8.5V
OR
110
RE
BE
130
117
BR
110
OR
100
YE
GY
SVU
Circuit
III 1.5
3P
Tr2
1.5
3P
Tr7
1.5 3P
-0+15
S
-0
+ 15
-QGND1
-0-15
-Q-15S
TrB
820
-AAAr-
Tr9
OJ
4
—
ii N
y.
•(NCC
.
v
00
zp
=£
I
>
CO
10
-0
+ 8.5
-O gn
°2
-0-6.5
Tr14
NA03769-6YA
[Caution]
When you
carry
out inspection on Power Supply Unit,
be
sure to
make complete connection of the connector
or
Short
Circuit
both +15
-^
+15S and
— 15^^-—
15S.
Otherwise, the
circuit
can break with the power on.
Ctt*]
WM*-=-
-v h
nMMltt
if
T\
3|.?f
-Sr&fl-
U:iJ
T"
?
—
&W>Htfc
i ±> X(±
+ 15^+15S, -15~-15S£
29
Note)
1.
Transistor
4.
OP
Amplifier
Tr1,2
2SD203
OP1,2
:
NJM4558
Tr3,14
2SA490
5.
Fuse
Tr4,11,13 2SC828
F1
:
0.5A
Tr5,10,12
2SA561
F2
:
0.5A
Tr6,9
2SD234
6.
VR
:
SR-29D
Tr7,8.
2SA745
2.
Diode
D1,D2 5B2
D3,D5 10DCM
D4,D6 10DC-4R
D7~D9
1S1555
3.
Zener Diode
ZD1,2,5
WZ150
ZD4
1S1715
ZD3 02Z5.6A