JVC KS-FX43R - 4.4 LA4743 K (IC941): Power amp.

KS-FX483R,KS-FX480R,KS-FX43R
1-18 (No.49812)
4.4 LA4743K (IC941) : Power amp.
• Block diagram
11
6 20
1
4
10
15
25
13
14
16
12
9
8
5
7
2
22
17
19
18
21
23
24
3
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
IN 1
IN 2
ST BY
Vcc 1/2 Vcc 3/4
OUT 1+
OUT 1-
PWR GND1
OUT 2+
OUT 2-
PWR GND2
R.F
IN 3
IN 4
PRE GND
ON TIME C
Muting &
ON Time Control
Circuit
Protective
circuit
Protective
circuit
Mute
circuit
Ripple
Filter
Stand by
Switch
N.C
+
+
0.22 F
2200 F 0.022 F
0.22 F
TAB
+5V
ST ON
+
+
+
+
47 F
0.22 F
0.22 F
22 F
+
Mute
10K
+
3.3 F
OUT 3+
OUT 3-
Low Level
Mute ON
PWR GND3
OUT 4+
OUT 4-
PWR GND4
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
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