JVC KD-LX50R - Page 32

11
1
12
4
10 15 25 13 14 16
24
23
21
18
19
17
22
2 3 5
8
7 9
206
+ - - +
+ - - +
+ -
+ -
+ - + -
IN 1
TAB
IN 2
ST BY
R.F
IN 3
N.C
PRE GND
IN 4
ON TIME
PWR GND4 OUT 4- OUT 4+ PWR GND3
OUT 3-
OUT 3+
MUTE
PWR GND2
OUT 2-
OUT 2+
PWR GND1
OUT 1- OUT 1+
VCC3/4
VCC1/2
LA4743B (IC941) :Power amp
Muting & on time control circuit
Protective circuit
Mute circuit
Ripple filter
Stand by switch
Protective circuit
1 2 3 4 5 6 7 8 910111213141516171819202122232425
TAB GND1 OUTFR+ STBY OUTFR- VCC1/2 OUTRR+ GND2 OUTRR- VREF INRR INFR SGND INFR
INRL ONTIME OUTRL+ GND3 OUTRL- VCC3/4 OUTFL+ MUTE OUTFL- GND4 NC
1.Terminal layout
2.Block diagram
3.Pin function
1
2
3
4
5
6
7
8
9
10
11
12
13
Header of IC
Power GND
Output (-) for front Rch
Stand by input
Output (+) for front Rch
Power input
Output (-) for rear Rch
Power GND
Output (+) for rear Rch
Ripple filter
Rear Rch input
Front Rch input
Signal GND
TAB
GND1
RFO-
STBY
RFO+
VCC1/2
RRO-
GND2
RRO+
R.F
RRIN
RFIN
SGND
14
15
16
17
18
19
20
21
22
23
24
25
LFIN
LRIN
ONTIME
LRO+
GND3
LRO-
VCC3/4
LFO+
MUTE
LFO-
GND4
NC
Front Lch input
Rear Lch input
Power on time control
Output (+) for rear Lch
Power GND
Output (-) for rear Lch
Power input
Output (+) for front
Muting control input
Output (-) for front
Power GND
Non connection
Pin
No.
Symbol Function
Pin
No.
Symbol Function