Brother FAX-8650P service manual Main PCB 4/7

1

2

3

4

5

6

S 0 V

+ 5 V

+ 5 V

R 9 0

R 8 9

A

0

B L M 1 1 A 2 0

A

C 8

C 7 0

C 5 6

C 4 7

C 6 0

C C 1 0 4 x 4

P 1 2

M 0 V

M 5 V

1 6 V /

1 0

9 2 1 0 B - 1 - 2 0 Z

B G 3 0 8 0 / 2

S 0 V

A B U S

1 1

1 0

D V S S

D V D D

1 9

1 8

C 8 1

D V S S

D V D D

2 5

2 4

D V S S

D V D D

3 2

3 1

A 1

1

D V S S

D V D D

4 1

4 0

R 9 1 1 2 0 K

D V S S

D V D D

4 9

4 8

A 2

2

D V S S

D V D D

5 8

5 7

D V S S

D V D D

3

C 8 4

R 9 7

6 5

6 4

A 3

D V S S

D V D D

C C 1 0 4

3 9 K

7 0

6 9

7 W U 0 4 F

9

D V S S

D V D D

A 4

4

R I

N

-

P R I

N G

7 5

7 4

L 5

7 4 B

D V S S

D V D D

2

6

5

3

7 4 C

A B U S

A R E F

A 5

5

+

4 3 C

1 0

8

2 1

F S I N

A 0

3 9

A 1

2 7 0

# 1 3

# 1 3

2 0

3 8

A 2

R 9 6

F S O U T

A 1

R 4 8 5 . 6 K

3 7

A 3

3 9 K

# 1 0

R 9 2

+ 5 V

A 2

D R B U S

Z D 2

6 6

3 6

A 4

K I 3 2 4

4 . 7 K

T E S T 1

A 3

H Z S 5 C

1 6

D R B U S

T E S T 2

R 4 7

1 4

5 1

D 0 R

D 0 R

6

T E S T 3

D 0

1 5 0

4 1 . 4 7 2 M H Z

1 7

5 0

D 1 R

T E S T 4

D 1

X T 3

D 1 R

)

1 5

4 7

D 2 R

7

T E S T 5

D 2

* R 6 7

4 6

D 3 R

* R 6 9

D 3

D 2 R

8

B

M 0 V

M 0 V

2 2 K

1 3

4 5

D 4 R

B

M O N 1

D 4

+ 5 V

1 2

4 4

)

M O N 2

D 5

D 5 R

C 4 4

C 4 5

D 3 R

9

9

4 3

D 6 R

M O N 3

D 6

C C 5 P

C C 5 P

)

8

4 2

D 7 R

D 4 R

R 5 2

M O N 4

D 7

5

3

1 0

*

R 7 0

7

2 2

* R 6 8

M O N 5

C L K

0

6

C 0 V

D 5 R

1 1

M O N 6

# 1 3

) ) )

)

R 5 0

R 5 1

7 6

H I P 0

- R S T

2 3

M R S T

1 3 A

L 4

D 6 R

1 2

2 2 K x 3

7 3

3 5

M C E

0

M O D E M

H I P 1

- C E

1 3 A

D 7 R

1 3

7 2

3 4

R D

P 1

) ) )

H I P 2

# 9

- R D

1 3 B

S O V

3 3

L W R

- W R

1 3 B

H S P L Y (

7 3 C )

7 1

H O P 0

+ 5 V

S 0 V

6 7

2 9

M R S T

1 4

M S L ( 7 4 C )

H O P 2

M P S E L

4 5 B

2 8

M I

N T

6 8

- I N T

1 2 B

T A D H ( 7 4 B )

H O P 1

2 7

M C E

-

D R E Q

1 5

2 6

4 4 B

-

D A C K

5

M 0 V

N C

R D

3 0

5 6

1 6

N C

D T C K

4 4 B

5 9

R X D

L W R

4

6 0

1 7

M 5 V

A V D D

T X D

4 4 B

7 7

6 1

C 6

C 7 9

A V D D

- D C D

M I

N T H

6 2

1 0 V

1 8

C C 1 0 4

- C T S

6 3 C

1

6 3

1 0 0

A G N D

- R T S

8 0

M O V

A G N D

1 9

C 5 8

C C 1 0 4 B

5 V

R 7 1

7 8

5 2

C 1 4 9

R X I N A

E Y E C K O

1 K

H

7 9

5 3

C C 1 0 4

3 K

R X I N B

E Y E C K I

C

2

5 4

R 7 0 0

2 1

V B I A S

E Y E D A T

* R 1 0 2 7 5 K

C

3

5 5

S 0 V

2 0

C

B

T X O U T

E Y E S Y C

3

* 1

9 2

C 5 7 C C 1 0

R 7 2 1 K

/ 1 6 V

C 5 C C

0 4

C 7 1

*

R 1 0 1

C 8 8

C C 2 2 1 C H

1 1

5 6 K

7 0

6 C

C C 1 0 4

6

C 1

C C

T X O

-

* R 8 5

+

7 4 B

7

# 1 0

5 6 K

5

K I

3 2 4

M 0 V

4 1 B

A R E F

C 8 7

R 1 0 3

4 5 C

4 . 7 K

C C 1 0 2 B

A R E F

A S S Y

F A X 3 7 5 0 , M F C 7 7 5 0

+ 5 V

4 3 C

M 0 V

8

# 1 3

C 4 6

7 W U 0 4 F

C C 1 0 4

4

C 0 V

D

D

N O T A S S Y

F A X 3 7 5 0 , M F C 7 7 5 0

A

Main PCB 4/7

1

2

3

4

5

6