Microlab A-6331 Schematics

654321

+VB

D

C

B

A

R
RCA

L

RCA

JK1

VR1A
B50K

C1
1UF

VR1B
B50K

C1'

R01

22K

R01'
22K

SW1

AC IN

1 2 3 4 5 6

1UF

T1

2
3

R1
47K

-VB

6
5

R1'
47K

C05
221

4x1N5404

D3 D2

U1A
082

U1B
082

1

7

R9

4.7K

R9'

4.7K

R11

8.2K

C9

1UF

D1D4

+VB

C11

104

8

2
3

U4A

4

4558
R10
100K

-VB

+VCC

150/0.5W

C23
4700UF
25V

C24
4700UF
25V

-VCC -VB

JK4

47K

R12

1

C12
104

R22

R23
150/0.5W

R13
10K

ZD1

9.1V

ZD2

9.1V

+VB

C13
224

R14
10K

1.8K/0.25W

C25
100UF/25V

C26
100UF/25V

R24

6
5 7

C14
104

LED1

U4B

C2
682

R2

8.2K

C2'
682

R2'

8.2K

C16

0.47UF

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TDA2030A

4

TDA2030A

4

C8'
100UF/25V

R19
22K

C18
22uF

R18

R19
22K

C18'
22uF

R18'

680

-VCC

C22
100UF/25V

Number RevisionSize

+VCC

JR1

0.5/0.5W

C6
224

R8

3.3

JR1'

0.5/0.5W

C6'
224

R8'

3.3

JR2

0.5/1W

C09

C19

221

224

R20

3.3

JR2'

0.5/1W

C09'

C19

221

224

R20

3.3

R21
22K

R7
39K

R7'
39K

A-6331 SUBWOOFER

SP1
8 ohm

SP2
8 ohm

SP3
8 ohm

SYSTEM

D

C

B

A

WANGZHAO

C7

C8
100UF/25V

C4

VR3A
B50K

VR3'B
B50K

0.22UF

C3
333

C4'

0.22UF

C3'
333

R17
22K

R5
22K

R5'
22K

C07
102

R17'

22K

-VCC

R3

3.3K

R4

6.8K

R3'

3.3K

R4'

6.8K

R15
1K

C06
221

LED2

VR2
B10K

C15

0.47UF

104

5

1

U2

2

C02

C5

3.3UF

102

R6
510

C5'

C02'

3.3UF

102

R6'
510

+VCC

TDA2030A
5

1

U5

2

3

C08
221

TDA2030A
5

1

C07'
221

C08'
221

U5

2

3

C22

C21

100UF/25V

104

3

5

1

U3

2

3

C7'
104

C21
104

4

680

4

Title

B

Date: 16-Apr-2003 Sheet of
File: F:\WANG\A-6302.ddb Drawn By: