Brother 8250P - FAX B/W Laser Printer Service Manual page 182

Facsimile equipment
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1
+ 5 V
C 7 3
C C 1 0 4
3 7
+ 5 V
A B U S
V C C
A 1
2 5
A 0
A 2
2 4
C 4
A 1
A 3
1 0
2 3
A 2
A
/ 1 6 V
A 4
2 2
A 3
S 0 V
A 5
2 1
A 4
A 6
2 0
8 M
A 5
F L A S H
A 7
1 9
A 6
A 8
1 8
A 7
A 9
8
*
A 8
A 1 0
7
# 7
A 9
A 1 1
6
A 1 0
A 1 2
5
A 1 1
A 1 3
4
A 1 2
A 1 4
3
A 1 3
A 1 5
2
A 1 4
A 1 6
1
A 1 5
A 1 7
4 8
A 1 6
A 1 8
1 7
A 1 7
9
N C
1 0
R 6 2
N C
+ 5 V
1 3
N C
R 6 1
B
+ 5 V
1 4
N C
S 0 V
A 1 9
1 6
R 6 0
N C
* R 6 4
0
4 7
B Y T E
+ 5 V
+ 5 V
S 0 V
C 2 1
C C 1 0 4
C 5 5
C C 1 0 4
3 1
2 2
1 2
A B U S
V C C
G
G
A 1
1 4
1 0
A 0
D 0
A 2
9
1 6
A 1
D 1
A 3
8
1 8
A 2
D 2
A 4
7
2 0
C
A 3
D 3
2 3
A 5
6
A 4
D 4
8 M R O M
2 5
A 6
5
A 5
D 5
A 7
2 7
4
A 6
D 6
A 8
3
2 9
A 7
D 7
A 9
4 1
1 5
A 8
D 8
*
A 1 0
4 0
1 7
A 9
D 9
# 6
1 9
A 1 1
3 9
A 1 0
D 1 0
2 1
A 1 2
3 8
A 1 1
D 1 1
A 1 3
2 4
3 7
A 1 2
D 1 2
A 1 4
3 6
2 6
A 1 3
D 1 3
A 1 5
3 5
2 8
A 1 4
D 1 4
A 1 6
3 4
3 0
A 1 5
D 1 5
A 1 7
3 3
A 1 6
A 1 8
2
4 2
A 1 7
N C
A 1 9
1
A 1 8
(
1 1
* R 5 9
C E
1 3
R D
O E
3 2
D
W O R D / B Y T E
+ 5 V
1
2
S 0 V
C 1 1 0
C C 1 0 4
2 7
4 6
G
G
D B U S
2 9
D 0
3 1
D 1
3 3
D B U S
D 2
D 0
3 5
D 3
D 1
3 8
D 4
D 2
4 0
D 5
D 3
4 2
D 6
D 4
4 4
D 7
D 5
3 0
D 8
D 6
3 2
D 9
D 7
3 4
D 1 0
R 2 0 4
D 8
3 6
D 1 1
6 8
D 9
3 9
D 1 2
D 1 0
4 1
D 1 3
D 1 1
4 3
D 1 4
D 1 2
4 5
D 1 5
D 1 3
D 1 4
1 5
R Y / B Y
D 1 5
* R 6 3
1 0 K
1 2
+ 5 V
R E S E T
* R 6 6
0
R O M 1
1 2 B
* R 6 5
2 6
R O M 2
(
)
1 5 A
C E
2 8
R D
1 3 B
O E
1 1
L W R
1 3 B
W E
* C 1 1 1
C C 1 0 4
D B U S
D 0
D 1
D 2
D 3
D 4
D B U S
D 5
D 6
D 7
D 8
D 9
D 1 0
D 1 1
D 1 2
D 1 3
D 1 4
D 1 5
+ 5 V
C 1 3 1
C C 1 0 4
* R 5 8
R O M 1
)
1 2 B
R O M 2
Z D 1
8 . 2 B
1 5 A
0
1 3 B
1
8
V C C
A 0
3 2 K
2
7
T E
A 1
E E P R O M
3
6
A 2
S C L
# 1
4
5
V S S
S D A
S 0 V
2
3
4
+ 5 B
S 0 V
C 9 3
C C 1 0 4
R 1 2 9
1 1 0
R A S 0
1 2 B
3 7
4 2
2 1
1
6
2 2
V C C
V C C
G
G G
1 4
R A S
R M W R
1 3
1 1 B
W E
R A M R D
2 9
1 1 B
O E
2
3 0
U C A S
D 0 0
U C A S
1 1 B
3
3 1
C A S
D 0 1
1 6 M
L C A S
1 1 B
4
D R A M
D 0 2
1 7
5
A 1
A B U S
D 0 3
A 0
1 8
7
A 2
R 1 3 2
D 0 4
A 1
8
1 9
A 3
(
)
+ 5 B
D 0 5
A 2
9
2 0
A 4
R 1 3 1
0
A 4
D 0 6
A 3
# 3
1 0
2 3
A 5
R 1 2 7
0
A 5
D 0 7
A 4
2 4
3 3
A 6
R 1 2 8
D 0 8
A 5
(
)
2 5
3 4
A 7
S O V
D 0 9
A 6
2 6
3 5
A 8
D 0 1 0
A 7
3 6
2 7
A 9
R 1 2 6
D 0 1 1
A 5
A 8
(
)
3 8
2 8
D 0 1 2
A 9
A 1 0
3 9
D 0 1 3
1 5
4 0
R 1 2 5
0
D 0 1 4
N C
4 1
D 0 1 5
1 1
1 6
A 4
N C
(
)
N C
1 2
R 1 3 0
N C
3 2
N C
+ 5 B
S 0 V
* C 9 4
C C 1 0 4
(
)
(
)
6
2 0
1
4 0
3 5
2 1
*
R 1 3 3
V C C
V C C
G
G G
1 1 0
R A S 1
1 4
(
)
R A S
1 2 B
1 3
R M W R
L W
1 1 B
4 M
R A M R D
2 7
1 1 B
O E
2
D R A M
1 2
D 1
N C
3
2 9
C A S
C A S
D 2
1 1 B
4
2 8
U C A S
U C A S
D 3
1 1 B
1 6
5
A 1
D 4
A 0
1 7
7
A 2
D 5
A 1
1 8
8
A 3
D 6
A 2
*
9
1 9
A 4
D 7
# 4
A 3
1 0
2 2
A 5
D 8
A 4
3 1
2 3
A 6
D 9
A 5
2 4
3 2
A 7
D 1 0
A 6
2 5
3 3
A 8
D 1 1
A 7
2 6
A 9
3 4
D 1 2
A 8 R
A B U S
3 6
D 1 3
3 7
D 1 4
3 8
1 5
D 1 5
N C
3 9
3 0
D 1 6
N C
1 1
N C
R 1 7 9
S 0 V
4 . 7 K
E E C K
1 5 B
R 1 7 7
1 0
E S D
1 1 B
R 1 7 8
1 0 0
3
4
5
R 1 6 9
(
)
P 1 2
D H B P B 4 0
R 1 6 8
0
R A S 1
1 2 B
1 5
R 1 6 7
0
R A S 2
1 2 B
1 6
R 1 6 6
R A S 3
)
(
1 2 B
+ 5 V
R A M R D
1 1 B
1 8
U C A S
1 1 B
1 9
C A S
1 1 B
2 0
R 1 1
R M W R
1 1 B
1 7
2 2 K
A 1
5
A 2
6
A 3
7
A 4
8
A 5
9
A 6
1 0
A 7
1 1
A 8
1 2
A 9
1 3
A 1 0
1 4
A B U S
D 0
2 5
D 1
2 6
D 2
2 7
D 3
2 8
D 4
2 9
D 5
3 0
D 6
3 1
D 7
3 2
D 8
3 3
D 9
3 4
D 1 0
3 5
D 1 1
3 6
D 1 2
3 7
D 1 3
3 8
D 1 4
3 9
D 1 5
4 0
D B U S
2 4
3
+ 5 B
4
2 3
C 2
C 1 2 1
1 0
C C 1 0 4
/ 1 6 V
1
2
2 1
S 0 V
2 2
A
5
6
A
*
P 1 8
D H B P B 3 0
R S
1 2 C
1 7
E X C S
1 5 B
2
R D
1 3 B
1 3
+ 5 V
L W R
1 3 B
1
E X I N T
1 5 B
1 6
R E S I
2 7
5 1 C
R 1 2
B D
2 2 K
2 2
5 5 C
X V D O
1 2
1 4 B
S 0 V
2 0
X S E N
1 5 B
1 0
A 1
2 8
A 2
1 4
A 3
1 5
A 4
2 9
A 5
3 0
A B U S
D 0
5
D 1
B
6
D 2
2 1
D 3
7
D 4
2 3
D 5
8
D 6
9
D 7
2 4
D B U S
1 1
+ 5 V
2 5
2 6
C 2 2
C 1 0
C C 1 0 4
1 0
/ 1 6 V
3
4
1 8
1 9
S 0 V
C
D
Main PCB 2/8
6

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