JVC MX-J570V Service Manual page 46

MX-J570V/MX-J680V
LA6541-X(IC801) : Servo Driver
1. Pin Layout & Block Diagram
Vcc Vref Vin4
22
24 23
11k
ohm
Level
- +
shift
Level
shift
11k
ohm
2
1 3
Vcc Mute Vin1
2. Pin functions
Pin
Symbol Function
No.
1 Vcc Power supply (Shorted to pin 24)
2 Mute All BTL amplifier outputs ON/OFF
3 Vin1 BTL AMP 1 input pin
4
Vg1 BTL AMP 1 input pin (For gain adjustment)
5 Vo1 BTL AMP 1 input pin (Non inverting side)
6 Vo2 BTL AMP 1 input pin (Inverting side)
7 Vo3 BTL AMP 2 input pin (Inverting side)
8 Vo4 BTL AMP 2 input pin (Non inverting side)
9 Vg2 BTL AMP 2 input pin (For gain adjustment)
10 Vin2 BTL AMP 2 input pin
11 Reg Out External transistor collector (PNP) connection. 5V power supply output
12 Reg In External transistor (PNP) base connection
13 Res Reset output
14 Cd Reset output delay time setting (Capacitor connected externally)
15 Vin3 BTL AMP 3 input pin
16 Vg3 BTL AMP 3 input pin (For gain adjustment)
17 Vo5 BTL AMP 3 output pin (Non inverting side)
18 Vo6 BTL AMP 3 output pin (Inverting side)
19 Vo7 BTL AMP 4 output pin (Inverting side)
20 Vo8 BTL AMP 4 output pin (Non inverting side)
21 Vg4 BTL AMP 4 output pin (For gain adjustment)
22 Vin4 BTL AMP 4 output pin
23 Vref Level shift circuit's reference voltage application
24 Vcc Power supply (Shorted to pin 1)
1-46
Vg4 Vo8 Vo7
20
21 19
Vcc
B T L
driver
B T L
driver
4 5 6
Vg1 Vo1 Vo2
Vo6 Vo5
Gnd
18 17
- +
B T L
driver
B T L
driver
7 8
Gnd
Vo3 Vo4
Vg3 Vin3 Cd Res
16 15 14 13
11k
ohm
Level
RESET
shift
Level
Regulator
shift
11k
ohm
9 10 11 12
Vg2 Vin2 Reg Reg
out In