JVC PC-X290 Service Manual page 80

PCX290
TA8229K(IC404):Audio power IC with built-in two channels developed
1.Terminal layout 1.Terminal layout
3.Pin function
Pin No. Symbol
1
2 B.S.2
3 OUT2
4 VCC2
5 OUT1
6 B.S.1
7 Power-GND
8 Vcc2
9 Ripple
10 NF1
11 IN1
12 IN2
13 NF2
14 Pre-GND1
15 Pre-GND2
58
IN1
11
NF1
10
45 W
Ripple
9
IN2
12
NF2
45W
13
I/O
- Connect a E.C. to Vcc
O 2 CH Out-Put
- Power supply
O 1 CH Out-Put
- Connect a E.C. to Vcc
- Power Gnd
- Power Supply
- Connect a E.C. to Vcc
I 1 CH negative fead back input
I 1 CH Signal input
I 2 CH Signal input
I 2 CH negative fead back input
- Pre-Gnd 1
- Pre-Gnd 2
2.Block diagram 2.Block diagram
v
v
cc2 cc2
8 4
+
CH-1
-
30KW
Bias Circuit
Thermal Shut Down
Protection Circuit
+
CH-2
-
30KW
14
15
Pre-GND2
Pre-GND1
Function
6 B.S.1
5 OUT-1
7 POWER-GND
3
OUT-2
2
B.S.2