JVC TH-V70 Service Manual page 45

BA5983FM (IC201) : 4-channel driver
1. Terminal layout & Block diagram
1
2
3
10k
4
10k
5
6
10k
7
10k
8
STAND BY
9
CH1/2/3
Vcc
10
10k
10k
11
Level
Shift
10k
12
10k
10k
10k
13
Level Level
Shift Shift
14
10k
10k
BD4740G (IC803) : Reset
1. Terminal layout
5 4
VCC RST
NC SUB GND
1 2 3
TA8409S (IC108) : Motor driver
1. Terminal layout
1 2 3 4 5 6 7 8 9
2. Pin function
Pin No.
Vcc
28
1
2
27
3
4
26
5
10k
6
25
7
20k
8
24
9
23
10
10k
11
22
12
13
20k
14
15
16
21
17
STAND BY
20 18
CH4
19
Vcc
19
20
10k
10k
21
18
Level
22
Shift
23
10k
17
10k
24
10k
10k
25
16
26
27
15
10k
28
10k
2. Block diagram
VCC
5
Vref
3
GND
2. Truth table
INPUT OUTPUT
IN1 IN2 OUT1
0 0
1 0
H
0 1
L
1 1
L
Symbol I/O
BIASIN I Input for Bias-amplifier
OPIN1+ I Non inverting input for CH1 OP-AMP
OPIN1- I Inverting input for CH1 OP-AMP
OPOUT1 O Output for CH1 OP-AMP
OPIN2+ I Non inverting input for CH2 OP-AMP
OPIN2- I Inverting input for CH2 OP-AMP
OPOUT2 O Output for CH2 OP-AMP
GND - Substrate ground
STBY1 I Input for CH1/2/3 stand by control
POWVCC1 - Vcc for CH1/2 power block
VO2- O Inverted output of CH2
VO2+ O Non inverted outpur of CH2
VO1- O Inverted output of CH1
VO1+ O Non inverted outpur of CH1
VO4+ O Non inverted output of CH4
VO4- O Inverted output of CH4
VO3+ O Non inverted output of CH3
VO3- O Inverted output of CH3
POWVCC2 - Vcc for CH3/4 power block
STBY2 I Input for Ch4 stand by control
GND - Substrate ground
OPOUT3 O Output for CH3 OP-AMP
OPIN3- I Inverting input for CH3 OP-AMP
OPIN3+ I Non inverting input for CH3 OP-AMP
OPOUT4 O Output for CH4 OP-AMP
OPIN4- I Inverting input for CH4 OP-AMP
OPIN4+ I Non inverting input for CH4 OP-AMP
PREVCC - Vcc for pre block
4 RST
MODE
OUT2 MOTOR
STOP
L CW/CCW
H CCW/CW
L BRAKE
TH-V70
Function
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