JVC KD-SX950 Service Manual page 18

All manuals and user guides at all-guides.com
LA4743B (IC351) :Power amp
1.Terminal layout
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
2.Block diagram
11
IN 1
1
TAB
12
IN 2
4
ST BY
10
R.F
15
IN 3
25
N.C
13
PRE GND
14
IN 4
16
ON TIME
VCC1/2
VCC3/4
6 20
+ +
- -
Protective
circuit
- +
+
-
Stand by
switch
Mute
Ripple
filter
circuit
17
+
+
-
-
18
Protective
circuit
- +
+ -
Muting &
on time control
circuit
9
OUT 1+
7
OUT 1-
8
PWR GND1
5 OUT 2+
3 OUT 2-
2
PWR GND2
22
MUTE
OUT 3+
19
OUT 3-
PWR GND3
21 OUT 4+
23
OUT 4-
24
PWR GND4