R I N G O
R N G
1 3
1 2 1 4
2 5 B
1 1
C
1
0
C N T
T L S L
21B
2 4 C
21B
D A R E C
R 2 6
20K
22B
C 2 8
C C 1 0 3 B
C 2 2 C C 1 0 2 B
-
+
R 1 8
1 8 0 K
1 3
1 4
1 2
# 2
B A 1 4 7 4 1
C 2 9
C C 1 0 4
R 2 8
1 0 K
+ 2 4 R
T L S L
R L 1
M 0 V
2 3 C
2 3 C
9
5
6
7
1 1
1
R 1 5
1 . 5 K
R 1 4
M 0 V
R 1 6
1 K
R 1 9
2 . 2 K
DG
S
A R E F
8C M L L
1 2
1 0
+ 5 V
+ 2 4 V
N C U 1 P 3
B 1 2 B - P H
R L 2
M 5 V
M 0 V
# 3
7 4 H C 4 0 5 3
8
1 6
C 2 6
C C 1 0 4
6 7
Q 2
2 S K 2 0 8
1 1 C
R 2 7
1 . 5 K F
Z D 3
H Z U 8 . 2 B 2
M 0 V
M O V
C 2 3
2 5 A
M 0 V
M U T E
Q 3
D T C 1 1 4 Y K
# 3
7 4 H C 4 0 5 3
2 4 R E T
C M L H
Q 4
D T C 1 1 4 Y K
25A
T L S W
2 3 B
1 3 B
R 3 3
0
R 3 2
Z D 2 Z D 1
C 3 1
C C 1 0 4
M O V
2 5 B
C M L H 2 5 B
C
1
0
CNT
1 5
1
2
R L 1
R L 2
# 3
7 4 H C 4 0 5 3 - A
1 0
CNT
2 5 B
T E L
# 3
7 4 H C 4 0 5 3
1
0
3
5
C
4
9
R 1 7 1 0 0 K
T X O
R I N
R I N 1 1 B
2 3 C
-
+
# 2
B A 1 4 7 4 1
R 2 9 5 6 K F
C 2 7 C C 6 8 1
R 3 1
1 0 K F
9
1 0
8
R 3 0
1 K
1 / 1 0 W
2 5 B
C 1 2
C C 1 0 4 / 5 0 V
+ 2 4 R
# 2
B A 1 4 7 4 1
4
1 1
M 0 V
M 0 V
+ 2 4 R
+ 2 4 V
4
3
5
1
2

( )

O P O N R 5 0
U M C 4 N
Q 1
N O T A S S Y
25B
T L R L
S P
1
M U T E
2
T L O F
3
P L S
4
C I
7
D A R E C
5
R N G
O P O N 1 4
C M L H 8
T E L 9
M 5 V
1 5
M 0 V
+ 2 4 V
R I N G O
2 4 R E T
1 0
1 1
1 2
6
1 3
S P
25A
P L S
4
2
3
T L O F
C I
2 5 A
2 5 A
P 2
9 2 1 0 B - 1 - 1 5 Z
25C
21C
21A
21A
2 1 B
23C
2 5 C
23A
22A, 24B
23B
24C
2 5 B
C 1 4
C C 1 0 4
H Z U 2 . 0 V X 2
()
)
(

M A I N

P 1 4

A
B
1 2 3
C
D
1 2 3 5 6
A
B
C
D
6
4
4 5

BModem PCB 2/2