JVC KD-SX60WT Service Manual page 31

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6.5 LA4743K (IC941) : Power amp.
• Block diagram
IN 1
0.22 F
TAB
IN 2
0.22 F
TE
L 13942296513
ST BY
+5V
ST ON
R.F
47 F
IN 3
0.22 F
N.C
PRE GND
IN 4
0.22 F
www
ON TIME C
.
22 F
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+
11
1
+
12
Stand by
4
Switch
Ripple
10
+
Filter
+
15
25
13
+
14
Muting &
x ao u163
y
ON Time Control
16
+
Circuit
i
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2 9
8
Vcc 1/2 Vcc 3/4
6 20
-
+
Protective
circuit
-
+
Q Q
3 6 7 1 3 1 5
Mute
circuit
-
+
Protective
circuit
-
+
co
.
9 4 2 8
+
2200 F 0.022 F
OUT 1+
9
OUT 1-
7
PWR GND1
8
OUT 2+
5
OUT 2-
3
PWR GND2
2
0 5 8 2 9 9 4 2 8
Mute 10K
22
+
3.3 F
Low Level
Mute ON
OUT 3+
17
OUT 3-
19
PWR GND3
18
OUT 4+
21
OUT 4-
23
m
PWR GND4
24
(No.49868)1-31
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