Brother FAX-8650P service manual Modem PCB 1/2

1

2

3

4

5

6

+ 5 V

A

5

A

C 1

5

0

4

C C 1 0 4 x 4

C 1

C 2

C 2

C 3

1 6 V /

1 0

P 1

R 2 8 8 F

9 2 1 0 B - 1 - 2 0 Z

S 0 V

5 5

V S S

V D D

5 6

4 3

4 1

A B U S

V S S

V D D

4 0

3 6

C 1 8 C C 2 2 1

V S S

V D D

1 9

1 1

V S S

V D D

1 0

R 2 4

0

V S S

A 1

1

R 1 1

1 0 0 K

R 2 3

0

A 2

2

A B U S

R 2 2

0

2 3

C 1 6

R 6

R I N

A 0

2 0

A 1

A 3

3

6 6

A 2

R 2 1

0

C C 1 0 4

1 0 0 K

A 1

C 1 0 C C 1 0 4

A 4

4

R I N

2

-

R 4 1 0

2 5

A 2

6 5

A 3

2 4 C

V R E F

6 4

A 4

R 2 0 0

2 4

A 3

+

1

V C

6 3

A 5

A 5

5

3

A 4

)

C 3

T L S W

R 7

3 1

2 2 B

1 0 / 1 6 V

R L Y A

0

# 2

2 8

D R B U S

R 2 5

Z D 4

R L Y B

D R B U S

B A 1 4 7 4 1

6

1 4

D 0 R

A R E F

H Z U 5 . 1 B 1

R I N G D

D 0

2 9

9

D 1 R

C 5

C 1 1

S P K R

D 1

D 0 R

(

1 5

D 2 R

6

C C 1 0 4

D 2

1 0 / 1 6 V

1 6

D 3 R

D 3

D 1 R

7

B

4 9

N C

6 8

D 4 R

B

# 1

D 4

4 2

1 7

D 5 R

+ 5 V

N C

D 5

D 2 R

8

M 0 V

4 5

6 7

D 6 R

M 0 V

N C

D 6

4 4

1 8

D 7 R

D 3 R

N C

D 7

9

3 8

N C

R 3 6

4

D 4 R

M A I N

N C

1 0

3 3

5 9

1 0 K

N C

R S T

P 1 2

3

M R S T

D 5 R

1 1

N C

P O R

3 2

1 6 C

3 9

N C

6 2

M C E

C S

1 6 C

D 6 R

2

N C

6 0

R D

1 2

+ 5 V

R D

1 6 C

1

6 1

L W R

N C

W R

1 6 C

D 7 R

1 3

R 3 8

R 3 7

1 0 K

5

8

M I

N T

R I

I R Q

3 4

1 6 C

1 0 K

D T R

M R S T

5 8

1 2

1 4

D S R

X T L I

1 5 B

5 4

1 3

X T C L K

X T L O

5 2

M C E

R D C L K

+ 5 V

1 5

5 3

1 4 B

G P 0

5 0

T D C L K

3 5

R 1

R D

R X D

1 6

R 1 3

5 7

R 3 9

1 5 0

1 4 B

2 1

T X D

X T 1

M 5 V

A V D D

5 1

1 0 K

L W R

1 0 K F

R L S D

5 6 . 4 4 8 M H Z

1 7

C 4

C 9

C T S

3 7

1 4 B

1 0 0

7

C 2 1

C C 1 0 4

2 2

R T S

M I N T H

C 7

6 . 3 V

A G N D

+ 5 V

1 8

C C 2 2 1

3 0

C C 6 P

1 4 B

M O V

A G N D

R 9

C 1 7

R 4 0

C 6

+ 5 V

1 9

C C 1 0 4

4 6

C C 1 2 P

5 6 K F

6

E Y E S Y C

2 6

4 7

1 0 K

T X O

-

T X A 2

E Y E C L K

C

4 8

C

2 4 B

E Y E X Y

7

+

2 7

T X A 1

S 0 V

2 0

)

C 8

5

L 1

# 2

R 8

C 1 9

C C 1 0 3

R 1 0

2 .

2

H

B A 1 4 7 4 1

5 6 K F

C C 1 0 4

M 0 V

S 0 V

R 1 2

1 0 K F

R 2

(

C 2 0

S 0 V

N O T

A S S Y

C C 2 2 1

M 0 V

S 0 V

M 0 V

R 3 4

A R E F

N O T A S S Y

M 0 V

S 0 V

R 3 5

N O T

A S S Y

M 5 V

R 3

4 7 0

C 1 3

C C 1 0 4

A R E F

R 4

C 2

4 7 0

1 0 0

/

6 . 3 V

D

D

M O V

B

Modem PCB 1/2

1

2

3

4

5

6