Microlab M-620 Schematics

1

2

3

4

C7

+VCC

D

C8

D

JK1

C2

104

100UF/25V

VR1A

682

C3

SP1

5 TDA2030A

R2

0.22UF

1

B10K

R7 0.5

6 ohm

3.3K

U2

4

R1

2

C1

3

R5

8.2K

C4

R3

C5

C6

0.22UF

472

6.8K

3.3UF

33K

224

C2'

R4

R6

3.3

510

682

0.22UF

C3'

5 TDA2030A

SP2

VR1B

C1'

R2'

0.22UF

1

R7'

0.5

6 ohm

3.3K

U3

4

B10K

R1'

2

C

R3'

3

C

8.2K

C4'

C5'

R5'

C6'

6.8K

472

33K

3.3UF

224

R8

R4'

R6'

33K

510

3.3

-VCC

R8'

C10

+VBC25

C9

100UF/25V

33K

C13

104

R10

224

104

8.2K

C15

+VCC

6

2

8

R1147K

R12

R13

0.22UF

10K

10K

5

7

C19

C8'*

3

1

TDA2030A104

100UF/25V

U4B

B

4 U4A

VR2

R142.7K

1

5

SP3

B

C11 C121UF

R9

4558

C14

U5

4

0.5

4 ohm

B10K

2

104

100K

C26

104

C16

3

C19

R18

102

C17

R16

0.5

104

224

-VB

22UF

39K

R15

R17

+VCC

3.3

510

SW1

D1

R19

+VB

C20

C10'*

T1

470/0.5W

104

100UF/25V

AC IN

1N5402

C25

ZD1

C23

-VCC

3300UF

9.1V

47UF

R21

25V

C26

ZD2

2.7K

LED1

Title

A

A

D2

3300UF

9.1V

C24

M-620 SUBWOOFERSYSTEM

AC ADAPTER IN

25V

47UF

-VCC

R20

-VB

-VCC

Size

Number

Revision

A4

1N5402

470/0.5W

Date:

27-Mar-2003

Sheet

of

File:

F:\huang bf\HUANG\M-620.ddbDrawn LBy:.M.An

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