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1
QQ
LA4663 (AMP ASSY : IC3302)
3 7 63 1515 0
• POWER IC
A
Blockdiagram
+5V
B
C
TE
L 13942296513
D
Pin Function
No. Pin Name I/O
1
RF
O
RF connection
2
R IN
I
R ch Audio data input
−
3
GND A
Ground A
4
L IN
I
L ch Audio data input
5
STANDBY
I
Standby input
E
6
MUTE
I
Signal Mute Input
−
7
VCC1
Power supply 1
−
Power supply 2
8
VCC2
9
L+OUT
O
L ch + Amplifier Output
−
10 GND P
Ground P
11 L- OUT
O
L ch - Audio data Output
www
12 R- OUT
O
R ch - Audio data Output
−
13 GND P
Ground P
14 R+ OUT
O
R ch + Amplifier Output
F
74
1
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2
+5V
5
STAND BY
SIGNAL
R1
MUTE
22kΩ
6
+
C4
–
10uF
10V
C1
4.7uF
10V
IN1
+
2
– +
–
Ri=
20kΩ
Input Amplifier
PRE
GND
3
C2
Input Amplifier
4.7uF
10V
IN2
+
4
– +
–
Ri=
20kΩ
Ripple Filter/
Starting Time
1
+
C3
–
47uF
25V
x
ao
y
.
i
2
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3
8
7
8
CC 1
V
V CC 2
CH 1
+OUT1
14
Output Amplifier
PWR
13
GND1
12
–OUT1
+OUT2
9
PWR
10
Output Amplifier
GND2
Q Q
3
6 7
11
–OUT2
CH 2
Pin Function
u163
XW-HT1
3
4
2 9
9 4
V
CC
+
C5
–
2200uF
25V
C6
RL=4~8Ω
0.1uF
R2
2.2Ω
R3
2.2Ω
C7
0.1uF
C8
RL=4~8Ω
0.1uF
R4
2.2Ω
R5
2.2Ω
1 3
1 5
0 5
8
2 9
C9
0.1uF
m
co
.
4
2 8
9 9
9 4
2 8
9 9
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