Microlab A-6612 Schematics

87654321

SW2-B

100

R524

ZD501

5.1V

E502

100U/16V

16

100U/50V

E501

470K
R523

8

7

R504

47K

R505

R505 '

R507

R509

R501

470

470

10K

10K

4.7K

22K

R520

C502
102

AUX L

AUX R

REAR L

WANGZHAO

D

C

B

4.7K

R503

C501
102

A

R2

C1

0.22UF

R2'

9.1K

8

4

3R2
10K

C12

104

U2A
4558

3C1

0.22UF

1R2

9.1K

1C1

0.22UF

2R2

9.1K
2C1

0.22UF

2R2'

9.1K

2C1'

0.22UF

+VA

R3

47K

2

1

3

U1A
4558

R1
47K

+VB

R3'
47K

6

7

5

U1B

R1'
47K

+VB

R12

39K

R11

1

BD1

+VB

+VB

+VB

+VB

3R1
47K

1R1
47K

2R1
47K

2R1'
47K

10K

3R3

18K

2

1

*

3

U4A

+VA

C18 104

1R3

8

47K

6

7

*

5

U4B

4

4558

+VA

2R3
47K

8

2

1

3

U6A

4

4558

2R3'
47K

6

7

5

U6B

+VP

C19
6800UF

25V

VR2A
B50K

R8
47K

R8'
47K

C22
1UF

R10

8.2K

3C2

10UF

+VB

C2'

10UF

C2

10UF

R9
100K

1C2
10UF

2

3

2C2

10UF

1C2
10UF

9.1K

C1'

0.22UF

+VA

FRONT R

VR1A
B50K

FRONT L

D

VR1B
B50K

VR2B
B50K

C11
100UF

C

BASS

VR1C
B50K

CENTER

VR1D
B50K

VR4
B50K

REAR R

B

REAR L

A

AC IN

VR1E
B50K

VR3A

B50K

VR1F
B50K

VR3B
B50K

F1

SW1

1 2 3 4 5 6 7 8

T1L250V

T1

C3
682

R4

8.2K

C3'
682

R4'

8.2K

C13
224

R13
10K

3R4
47K

2R4

8.2K

2R4'

8.2K

R01

2.7K

LED3

1R4

8.2K

2C3
682

2C3'
682

R5

3.3K

R5'

3.3K

U2B

LED1

R16

2.4K

7

SW2-A

1R5

3.3K

2R5

3.3K

2R5'

3.3K

C15

0.47UF

R17
330

LED2

VR2
B10K

6

5

C14
104

1C3
682

R6

6.8K

R6'

6.8K

+VA

1R6

6.8K

2R6

6.8K

2R6'

6.8K

ZD2
12V

C16

0.47UF

C5
104

C9
104

1C7
470UF

2C7
470UF

2C7'
470UF

C7
470UF

C7'
470UF

+VP

+VP

1C8
2200UF

+

-

-

+

-

+

C8
2200UF

+

-

-

+

+

-

SP4
4 OHM

SP5
4 ohm

SP6
4 ohm

SP1
4 OHM

SP2
4 OHM

SP3
6 ohm

+VCC

Rear L

X14Y

Rear R

15Z4

U502

TC4053

Cen

Bass

TC4053

X012X113Y02Y11Z05Z13INH6A11B10C9VEE

Front L

Front R

C508

C507

102

102

C506

102

15Z4

X14Y

16

TC4053

X012X113Y02Y11Z05Z13INH6A11B10C9VEE

C504

102

C503

102

C505

102

R512

R513

22K

470

FRONT R

Title

A3

Date: 5-Apr-2004 Sheet of
File: F:\my file\My Design\A-6610.Ddb Drawn By:

R514

R511

470

A-6612

R515

R516

470

22K

22K

FRONT L

CENTER

Number RevisionSize

U501 TC 4053

7

8

R506

R508

R502

47K

47K

47K

R522

R517

R521

R518

470

470

22K

22K

BASS

REAR R

R525

1.8K

47K

R510

470

R519

C10

10UF

4

5

6

100UF/25V

C21'

7

9

R7
10K

7

U3

TDA7377

9

1R7
10K

U1

TDA7377

3 13

8

3 13

8

10

1

2

10

15

14

1C9
104

1

2

15

14

C4
472

C5'
104

R19

2.2K

C17
102

+VB

100UF/25V

1C6
100UF

C6
100UF

C21

11

12

1C10

10UF

4

5

6

12

11

C4'
472

R14

2.2K

1C5

0.1UF

1C4
472

2C5
104

2C4
472

2C5'
104

2C4'

472

R18

3.3K

C20
100UF

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