Brother FAX-921 - Manual (Page 181)

+ 2 5 V
+ 5 V
R B 1 2 E
L A T C 1 6 D
H R L Y 3 4 E
C P 3 I 1 2 F
H D C 1 2 D
G N D
+ 5 V
C I S
P 6
B 7 B - P H
1
2
8
4
3
S T 1 1 2 D
T M
3
1 0
P 1 1
B 1 0 B - P H
R 8 9
3 3 K F
R 9 0
1 0 0 K F
T G 1 2 E
+ 5 V
G N D
R 5 V
7
V I D 1 2 E
Q 6
2 S C 3 9 2 8
G N D
Q 8
K R C 1 0 7 S
R 0 V
Q 1
2 S D 1 8 5 8
R 5
1 W
3 0
C P W M 1 6 D
R 1 0 6
2 . 2 K
R 0 V
R 5 V
R 1 0 7
1 0 K
R 5 V
L I G T 1 1 C
R 5 V
R 0 V 6
5
C 9 1
C C 1 0 4
C 7 5
C C 1 0 1
9
5
S T 2 1 2 D
D O U T 1 2 E
D I N 1 2 E
7
R 8 8 1 0 0
R 8 7 2 0 0
C 7 6
*
6
4
2
1
G N D
R 0 V
R 9 1
1 0 K F
Q 7
2 S K 1 3 9 9
Q 9
2 S C 3 9 2 8
C 5 1 6 V / 1 0
R 1 1 0 4 7 0
R 1 1 1 2 7 0
R 5 V
C L M P 1 6 D
R 1 0 8 2 2 K
C 9 0
C C 1 0 4
R 0 V
R S T H V D D
V D D
V D D
T E M P
A T A P
P O R T 2
P O R T 3
T R I G
D G N D
M T P
S D / P D 7
P D 6
P D 5
P D 1
D 0
D 1
D 2
D 3
D 4
D 5
D 6
D 7
A 0
A 2
A 3
A 4
A G N D
A G N D
A V D D
4 2
4 0
4 1
3 5
3 4
3 1
4 3
1 0
2 4
5 6
9
1 7
2 6
4 9
6 4
4 7
4 8
5 0
5 4
5 9
3 6
4 6
2 0
1 8
1 6
1 5
8
7
6
5
4
3
2
1
R 0 V
R 5 V
R 0 V
# 5
D B U S 1 4 E
1 1
1 2
A 5
A 6
A 7
A 8
1 4
1 3
1 9
A 1
P D 4
P D 3
P D 2
5 1
5 2
5 3
S A M P
R S
3 3
6 2
S H
C L K 1
6 3
6 1
C L K 2
6 0
P D 0
5 5
D A C K
5 7
D R E Q
5 8
R D A T 1 2 E
+ 5 V
3 0
2 9
2 8
2 7
2 3
2 2
2 1
2 5
3 2
I C L K
I O C S
M C S
I O E
M E
R D
W R
C L K I N
R E S E T
1 6 D S R A M
3 9
R S T L
A I N
3 8
4 5
4 4
P O R T 0
P O R T 1
3 7
A D R E F L
R 0 V
C 1 0 1 C 1 0 0
C 1 0 3
C 1 0 4 C 4
R 1 2 2
R 1 2 1 C 1 0 5
A 8
R D
W R
C K 1 6
D 7
D 0
D 1
D 2
D 3
D 4
D 5
D 6
D G N D
D G N D
D G N D
D G N D
G N D
M R E Q
I O R Q
R 5 V
1 7 D A B U S
G N D
A 5
A 6
A 7
A 4
A 0
A 2
A 3
A 1
1 4 A R S T L
1 7 C R B U S
1 2 E T G
1 2 E S M C
1 2 E S Y C S
3 2 F H R L Y
+ 5 V
P W O N 1 6 D
C M L H 1 6 C
S W 1
S P P B 5 1
+ 2 5 V
P I 2
R P I - 4 4 1
# 7
U M G 5 N
1
3
6
4
2
R 1 1 3
1 0 0 K
G N D
P 1
B 4 B - P H
S E N S O R
1
3
2
G N D
1 2 D F S E N
1 6 C H O O K
4 2 E C M L L
R 4 9
4 . 7 K
+ 5 V
G N D
C X 2
C 4 5
*
G N D
4
1 2 D R S E N
1 2 D R E A R
+ 5 V
1 2 D R I B N
G N D
G N D
C 9 3
*
P I 1
R P I - 4 4 1
G N D
P 9
B 2 B - P H
R E D
1
H O O K
2
+ 5 V
1 2 D C S E N
G N D
C 9 9
*
R 1 1 4
1 0 0 K
R 1 1 2
1 0 0 K
R 1 2 0
4 . 7 K
R 1 2 6
1 0 0 K
+ 5 V
G N D
G N D
+ 5 V
L 1 6 L 1 0 2 B
C 9 2
*
R 1 0 9
1 2 3 4 5 6 7 8
2 1 3 4 5 6 7 8
A
B
C
D
E
F
A
B
C
D
E
F
A
Main PCB 3/6
(FAX870MC/MFC970MC/FAX-930/
FAX-931)