Color - Brother FAX1170 Service Manual

1 2
A
B
C
D
+ 5 V
M I C
C 3 1 R 4 4
R 4 3
C C 1 0 4 8 . 2 K
1 0 K
R L 1
6
R L 2
7
C 3 2 R 4 5
R 4 6
E C C 1 0 4 8 . 2 K
1 0 K
P 1 2 C 3 3
B 2 B - P H C C 6 8 1 B
R E D
1
M O V
F
1 2
1 Connector for the microphone
2 Voice signal amplifier circuit
3 Analog portion of MODEM
3 4
2
C 3 7 6 8 1 B
R 5 7 1 0 0 K
R 5 3
2
-
1
3
+
R 5 8
# 1 4
4 . 7 K
B A 1 0 3 5 8 F
R 5 4
1 0 0 K
M O V
H R E F
+ 5 V
1 6
# 1 1
C 2 9
C C 1 0 4
4 0 5 3
6 7 8
M 0 V
3 4
Main PCB Circuit Diagram 5/5
III – 26
5 6
R 5 5 7 5 K
C 3 5 C C 2 2 1
R 4 8 5 6 K
6
-
7
4 4 D H F R L
5
+
R 4 7
# 1 4
4 . 7 K
B A 1 0 3 5 8 F
H R E F
M 0 V
*
T L S L 5 1 B , 5 3 B
C 5 2
C C 1 0 4
R 6 9
C 5 3
1 0 0 K
C C 2 2 1
C 1 0
C 5 5
1 6 V 1 0
C C 1 0 4
M 0 V
+ 5 V
8
# 1 4
C 3 4
C C 1 0 4
B A 1 0 3 5 8 F
4
M 0 V
5 6
These are provided on the FAX1570MC/
1030/MFC1870MC/1970MC.
7 8
3
# 1 6
T C 3 5 1 3 3 F
R 5 6
5 6 K
3 6 D M K T B U S
T X O U T D P D M C K
7 A D M D
D P D M D T
C 3 6
9 A M K
C C 1 0 2 B A P D M C K
1 0 A A M D
A P D M D T
1 1 C 0
C 3
1 2 C 1
H R E F
C 4
1 3 C 2
C 5
5 A M U T
M U T E
8
- P D R S T L 1 4 A
+ 5 V
1
V D D
1 5
R X I N A
C 5 4
C C 1 0 4
1 6 4
R X I N B V S S
2 1 4
V B I A S V S S
M O V
H R E F
7 8
A
B
C
1 4 D
D
E
F