JVC UX-H33 Manual De Servicio página 31

4.8 LA4663 (IC300) : 2ch power amp
• Pin layout
• Block diagram
SIGNAL
MUTE
22K
+
+5V
10
-
4.7
10V
IN1
- +
PRE
GND
4.7
IN2
10V
- +
+5V
5
STAND BY
6
CH 1
10V
+
2
-
Ri=
Input Amp
20k
3
PROTECTION CIRCUITS
Input Amp
+
4
-
Ri=
20k
CH 2
Ripple Filter/
Starting Time
+
4.7
-
25V
7 8
VCC1 VCC2
+OUT1
PWR
Output Amp
GND1
-OUT1
OUTPUT-GND SHORT
OUTPUT-VCC SHORT
RL SHORT
THERMAL SHUTDOWN
+OUT2
PWR
Output Amp
GND2
-OUT2
VCC
+
2200
-
25V
RL=4 to 8
14
0.1
2.2
13
2.2
0.1
12
POLYESTER
FILM
CAPACITOR
RL=4 to 8
9
0.1
2.2
10
2.2
0.1
11
(No.22044)1-31
UX-H33