JVC XV-521BK Service Manual page 30

XV-521BK/523GD/525BK/421BK
NJM4580D (IC672) : LPF, Mic and H.phone Amp.
1.Terminal layout
A OUT
A -IN
A +IN
V -
2.Block diagram
+
V
INPUT
+
-
V
IC-PST9140-T (IC717) : Reset IC
1. Block diagram
1-30
1
2
A
B
3
4
(TOP VIEW)
CO1
V +
8
7 B OUT
6 B -IN
B +IN
5
OP1
OUTPUT
VCC
2
OUT
1
GND
3