JVC PC-X250 Service Manual page 20

PC-X250
LA6541D Pin Functions
Pin No. Pin Name
1 V
CC
2 Mute
3 V 1
IN
4 VG1
5 V 1
O
6 V 2
O
7 GND
8 GND
9 GND
10 V 3
O
11 V 4
O
12 VG2
13 V 2
IN
14 REG OUT
15 REG IN
16 RES
17 C
D
18 V 3
IN
19 VG3
20 V 5
O
21 V 6
O
22 GND
23 GND
24 GND
25 V 7
O
26 V 8
O
27 VG4
28 V 4
IN
29 V
REF
30 V
CC
1 - 20
Power supply (shorted with pin 30)
ON/OFF control for all BTL AMP outputs
BTL AMP 1 input
BTL AMP 1 input (for gain control)
BTL AMP 1 output (non-inverting side)
BTL AMP 1 output (inverting side)
GND (minimum electric potential)
GND (minimum electric potential)
GND (minimum electric potential)
BTL AMP 2 output (inverting side)
BTL AMP 2 output (non-inverting side)
BTL AMP 2 input (for gain control)
BTL AMP 2 input
Connection for collector of external transistor (PNP); 5 V supply output
Connection for base of external transistor (PNP)
Reset output
Reset output delay time setting (with capacitor)
BTL AMP 3 input
BTL AMP 3 input (for gain control)
BTL AMP 3 output (non-inverting side)
BTL AMP 3 output (inverting side)
GND (minimum electric potential)
GND (minimum electric potential)
GND (minimum electric potential)
BTL AMP 4 output (inverting side)
BTL AMP 4 output (non-inverting side)
BTL AMP 4 input (for gain control)
BTL AMP 4 input
Reference voltage input for level shift circuit
Power supply (shorted with pin 1)
Description (Function)