Block Diagram - Yamaha YST- SW 012 Service Manual

YST-SW012
QQ
3 7 63 1515 0
When Checking the P.C.B..
• Connect all the connectors removed during disassembly back to the original positions.
• Spread the Rubber Sheet and Cloth for insulation purpose and place the Rear Panel Ass'y on the Rubber Sheet and Cloth. (Fig. 2)
TE
L 13942296513
I BLOCK DIAGRAM
INPUT
IC4A
3
-
4
+
PJ1
L.P.F.
6dB/oct
F1
www
POWER
SW5
.
8
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VR1
VOLUME
IC5A
2
4
+
2
-
L.P.F.
12dB/oct
+B
T1
Q9, D2
POWER
SUPPLY REGULATOR
x ao
y
D1
Q10, D3
i
-B
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8
Rubber Sheet and Cloth
Fig. 2
Q Q
3 6 7 1 3
IC5B
6
+
8
-
H.P.F.
12dB/oct
Q5, 6
D4, 5, 22, 23
+15
u163
.
-15
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
POWER
AMP
+B RY1
2 9
-
10
1 IC1
+
8
-B
A.N.I.C
IC6
LIMITER
PROTECTION
Q17- 20
m
D7, 25
co
9 9
2 8 9 9
DRIVER
R28
0.1