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A
B
AV-S70/NX-SW70
Q Q
3 7 6 3 1 5 1 5 0
AV-S70 PRINTED CIRCUIT BOARD
1
2
3
T E
L
1 3 9 4 2 2 9 6 5 1 3
INPUT
4
5
w w w
26
6
C
DSP–FL ( B ) P. C. B.
FROM : AMP (A)
3
SOUND
FROM : AMP (D)
DSP-FL ( B ) P. C. B.
x
a o
.
i
D
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E
(Component side)
2
FROM : DSP–FL (A)
Q
Q
3
7
(Foil side)
u 1 6 3
y
27
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F
2
4
8
9
9
6
3
1
5
1
5
0
8
9
VOLUME
–
+
Semiconductor Location
Ref. No.
D701
D702
D703
D704
D705
D706
D707
D708
m
c o
.
G
H
2
8
9
9
Point w (Pin 13 of IC701)
V : 2V/div, H : 0.1 µsec/div
DC, 1 : 1 probe
0V
Point e (+10V : Emitter of Q706)
(RESET : Collector of Q705)
V : 2V/div (+10V), V : 2V/div (RESET)
DC, 1 : 1 probe, H : 1 sec/div
+10V
0V
RESET
0V
AC CORD ON
AC CORD OFF
2
4
9
8
2
9
9
Location
Ref. No.
Location
Ref. No.
Location
D2
IC801
D2
Q701
E3
D5
IC802
C2
Q702
D2
C2
Q703
E3
C2
Q704
E3
C2
Q705
C2
C2
Q706
C2
B3
Q707
E3
C3
Q708
E3
Q710
D2
Q711
D2
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