1
1
2
2
3
3
4
4
5
5
6
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7
7
8
8
A
A
B
B
C
C
D
D
B O T T O M V I E W
C
T R S E R I E S
CPI COMMUNICATIONS, INC.
B
4
4
Friday, January 03, 1997
Title
Size
D o c u m e n t N u m b e r
R e v
Date:
Sheet
of
F D P A T H
T X A U D I O
C O N T R O L 2
D E S K M I C B I A S
H A N D S E T / D E S K M I C H I
A U X P T T L E D
P T T
A U X I N P U T 2
E A R P I E C E
V O L H I
B E E P I N P U T
M O N I T O R S W I T C H
C O M P R E S S O R O U T
+5
V B
V B
V B
V B
V B
V B
V B
V B
V S S
V C C
V D D
G N D
V E E
V B
V C C
R 6
1 0 K
C 1
. 4 7 u F
C 3
.1uF
R 3
1 0 K
Q 1
2 N 2 2 2 2
R 2 4
1 K
U 1 A
L F 3 4 7
+
-
3
2
1
R 1
1 . 8 M
C 2
1 u F
D 3
1 N 4 1 4 8
D 4
1 N 4 1 4 8
R 2 9
1 K
R 2 8
1 0 0 K
U 1 C
L F 3 4 7
+
-
1 0
9
8
R 5
1 0 K
R 4
1 0 0 K
C 4
4 7 0 p F
C 2 0
. 0 3 3 u F
C 1 9
. 0 3 3 u F
R 2 7
6 . 8 K
C 1 8
. 0 3 3 u F
R 2 5
1 . 2 K
U 1 D
L F 3 4 7
+
-
1 2
1 3
1 4
R 5 1
4 4 . 2 K
R 5 8
4 4 . 2 K
R 5 7
7 . 3 2 K
R 5 6
1 0 . 0 K
C 3 1
2 . 2 n F
R 5 9
1 0 K
R 5 0
6 . 8 1 K
R 5 5
1 0 . 0 K
U 8 A
L F 3 4 7
+
-
3
2
1
R 5 3
1 0 . 0 K
C 2 1
1 u F
R 6 0
1 0 . 0 K
C 3 0
. 0 1 u F 1 %
C 2 9
. 0 1 u F 1 %
U 1 B
L F 3 4 7
+
-
5
6
7
U 8 C
L F 3 4 7
+
-
1 0
9
8
U 8 B
L F 3 4 7
+
-
5
6
7
R 2 6
2 2 0 K
R 5 4
1 K P O T
1
3
2
U 8 D
L F 3 4 7
+
-
1 2
1 3
1 4
J 1
C O N 1 0
1
2
3
4
5
6
7
8
9
1 0
J 2
M O D J A C K 6
5
6
3
4
1
2
R 2
1 K
R 5 2
1 K P O T
1
3
2
U 1 1 D
4 0 6 6
8
9
6
