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KD-S871R
LA4743K(IC301):Power amp
1.Block diagram
IN 1
0.22 F
TAB
IN 2
0.22 F
ST BY
+5V
ST ON
R.F
47 F
IN 3
0.22 F
N.C
PRE GND
IN 4
0.22 F
ON TIME C
22 F
1-18
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+
11
1
+
12
Stand by
4
Switch
Ripple
10
+
Filter
+
15
25
13
+
14
Muting &
16
ON Time Control
+
Circuit
manuals search engine
2200 F
Vcc 1/2
Vcc 3/4
6
20
-
+
Protective
circuit
-
+
Mute
22
circuit
17
-
+
19
Protective
18
circuit
-
21
+
23
24
+
0.022 F
OUT 1+
9
OUT 1-
7
PWR GND1
8
OUT 2+
5
OUT 2-
3
PWR GND2
2
Mute 10K
+
3.3 F
Low Level
Mute ON
OUT 3+
OUT 3-
PWR GND3
OUT 4+
OUT 4-
PWR GND4
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