Nx-Sw150 Schematic Diagram - Yamaha DVX-S150 Service Manual

A B
DVR-S150/NX-P150
NX-SW150 SCHEMATIC DIAGRAM (MAIN)
1 Q Q
3 7 6 3 1 5 1 5 0
2
0
0
0
3
4
T E
L 1 3 9 4 2 2 9 6 5 1 3
5
6
7
w w w
8
80
C D E
11.6
0
0
0
0 0
0
-11.6
MAIN (2)
34.2
AC25.2
AC25.2
-34.4
x a o
IC1, 2, 7 : KIA4558P
Dual OP-Amp
. i
OUT 1 1 8 +V CC
–IN 2 7 OUT
1 2
+ – + –
+IN 3 6 –IN
1 2
–V 4
CC 5 +IN 2
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LIMITTER
11.6
0
0
0
0
-11.6
34.2 11.6
PROTECTION
1.1
Q Q
3 7
1.0
11.0
11.6
0.6
MAIN (1)
u 1 6 3
y
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H I
POWER AMP
2 4
8 9 9
0
0
0
0
-11.6
0
0
0
0.5
0
6 3 1 5 1 5 0 8 0 9
11.6
m
c o
.
* All voltages are measured with a 10M Ω /V DC electronic volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to
those originally installed.
* Schematic diagram is subject to change without notice.
J K L
IC4 : STK404-050
Power Amp
2
8 9 TR7 9
TR6
R1
R4
TR1 TR2
R5
TR8
C2
C1
R2
TR5
TR3 D1 R3 R6
TR4
SUB
1 2 3 4 5 6 7 8 9 10
0
0
2 4 9 8 2 9 9
Z