Block Diagram - Yamaha YST-SW030 Service Manual

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YST-SW030/YST-SW010
When Checking the P.C.B.:
C o n n e c t a l l t h e c o n n e c t o r s r e m o v e d d u r i n g
disassembly back to the original positions.
Spread the Rubber sheet and cloth for insulation
purpose and place the rear panel ass'y on it. (Fig. 3)
I BLOCK DIAGRAM
INPUT
IC4A
3
4
L.P.F.
6dB/oct
+15
Q9,D2
REGULATER
Q10,D3
-15
10
VR1
VOLUME
IC5A
2
4
L.P.F.
12dB/oct
+B
F1
T1
POWR
SUPPLY
D1
-B
P.C.B.チェックをする場合には
・ 分解の際に外したコネクターをすべて元通りに接続しま
す。
・ 絶縁のためにゴムシートと布を敷き、その上にリアパネル
Ass'yを置いてチェックします。 (Fig. 3)
Rubber Sheet and Cloth
ゴムシートと布
Fig. 3
*( ) YST-SW010 Pin No.
IC5B
2
6
3 *(2)
8
2 *(1)
H.P.F.
12dB/oct
Q5,6,7,8
D4,5,22,23
POWER
SW1
POWER
AMP
+B
RY1
10 *(9)
-
12 *(10)
IC1
+
9 *(8)
-B
A.N.I.C
IC2
Q16
D19,21
LIMITER
2
IC3
PROTECTION
DRIVER
R28
0.1

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