Ic Block Diagram - Aiwa SX-DV1 Service Manual

IC BLOCK DIAGRAM -1/3

QQ
3 7 63 1515 0
IC, BD3870FS
CAP TNF1
24 23
Tr e bl e 1
f c = 8 k H z
0dB
~
–87dB
–•
Vcc/2 Vcc/2
1
Vin1
TE
L 13942296513
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Bout2
TFN2 BNF2
22 21 20
Bass 2
Tr e b l e 2
f c = 8 k H z =80Hz
f
0
50k
2 3 4 5
A1
Vin2 SEL2 SEL1
IC, BU9262AFS
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8
BNF1 Bout1 OUT1
OUT2
19 18 17 16
Bass1
=80Hz
f
0
Vcc/2
50k 50k
50k
50k
6 7 8 9
A2 B1 B2 C1
Q Q
3 6 7 1 3
u163
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-30-
2 9 9 4 2 8
SI
Vcc SC
15 14 13
Logic
Vcc/2
Vcc/2
BD3871FS
50k
10 11 12
C2 Filter GND
1 5 0 5 8 2 9 9 4
m
co
XA-DV1
9 9
2 8 9 9