Brother FAX-8650P service manual Control Panel 1/2

1 2

3 4 5 6

A	+ 5 V
P 1	R 8	R 7	R 9	R 1 4 R 1 3 R 1 1	R 1 0
	4 7 K 4 7 K 4 7 K 4 7 K 4 7 K 4 7 K				4 7 K
5 2 0 8 9 - 1 5 2 0
K I	0
1 4
K I	1
1 2
K I	2
1 0
K I	3
8
K I	4
6
K I	5
4
K I	6
2
P 3				P 4

+ 5 V

C C 1 0 2 X 7					# 1
	S G N D
		S G N D	L P D 6 5 6 1 2 G B
		2 6	R S T		R S
					R W
		4			E
			K I	0	L C D 0
		5	K I	1	L C D 1
		6	K I	2	L C D 2
		7	K I	3	L C D 3
		8
			K I	4	L C D 4
		9
			K I	5	L C D 5
		1 0
			K I	6	L C D 6
		1 1
	+ 5 D		K I 7		L C D 7
	+ 5 V

			S G N D
		0
				V S S
	+ 5 D			V D D
				V O
3 8				R S
3 7				R / W
3 6				E
3 5				D B 0
3 4				D B 1
3 3				D B 2
3 2				D B 3
3 1				D B 4
3 0				D B 5
2 9				D B 6
2 8				D B 7

P 2

5 2 0 8 9 - 1 4 2 0

C O G

A

	5 3 0 2 5 - 0 6 1 0	5 3 0 2 5 - 0 8 1 0
B				+ 5 V		C 1
	4		4
				S G N D	1 0		0
	5		5
				S D O U T
	3		3

	F S E N	2 5	P I N 0	K O 0
R 2 0	S G N D	2 7	P I N 1	K O 1
				K O 2
S G N D				K O 3
		2 3	S D I N	K O 4

1 2

1 3

1 4

1 5

1 6

K O 0

K O 1

K O 2

K O 3

K O 4

1

3

5

7

9

P 1

5 2 0 8 9 - 1 5 2 0

B

2		2	S D I N
			P C L K
1		1
			R S E N
6		6
			M I C +
	7

			2 2	S D O U T	K O 5
	4 7 0		2 1
				P C L K	K O 6
		S G N D	2 4	T S T H	K O 7
)
	)

1 8

1 9

2 0

K O 5

K O 6

K O 7

1 1

1 3

1 5

		8	M I C -
			P 5 ( B Y )
S 2 B - P H -		K	2
	M I	C	1

				P O 6
(	(			P O 5
				P O 4
	+ 5 D	3 9	V D D	P O 3
				P O 2
		1 7	G N D	P O 1
		4 0	G N D	P O 0

S G N D

41

42

43

44

C 1 4

C C 1 0 2 X 8

F P C

S G N D

C
+ 5 V	+ 5 D	+ 5 V
1 / 8 W	0

S G N D

F S E N

S G N D

D

R S E N	2
	1
+ 5 V		1	3
		A		C		P H 1
						S G - 2 6 7
				E	(	R E A R )
		K
		2	4		S G N D
F S E N
	4
	3	1	3
	S G N D
		A		C	P H 2
					S G - 2 6 7
		K		E	(	F R O N T )
		2	4		S G N D

S L R - 3 4 M G 8 0 F	6 2 0
S L R - 3 4 M G 8 0 F	6 2 0
S L R - 3 4 M G 8 0 F	6 2 0

S L R - 3 4 M G 8 0 F 6 2 0

S L R - 3 4 2 V R 6 2 0

+ 5 V

C

D

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			D	Control Panel 1/2
				(FAX3750)￿
3	4	5			6