10-7
Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz)
Figure 10-9. Transmitter Audio Filter and Sub-tone Schematic Diagram
R
5
08
1
K
C5
68
1
0
n
F
GND
R
5
09
2
.
2
K
NJ
M
3
2
4
U5
0
1
-
B
7
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
6
1
2
8
4
11
NJ
M
3
2
4
NJ
M
3
2
4
U5
0
1
-E
U5
0
2
-E
9
1
0
1
2
3
4
5
6
7
8
U/
D VDO
V
SS
A
W
N
C
B
CS/
3
5
C51
7
22n
F
C52
3
1n
F
C5
43
1
.
2n
F
C522
5
.6
n
F
R
51
4
2
4K
R
515
12
K
R
5
97
4.7K
C525
330
P
C5
48
NA
C5
44
NA
+
5
V
C1
4
2
470
p
F
C1
4
1
NA
L604
2
.
2
uH(
1
608)
C
R60
1
KDZ
5
.
1
V
P
ROGRA
M
_DA
T
A
+3.3V
M
I
C1
0
B2
7
P
40(
2
.8
mm
)
C1
40
47
n
F
J60
1
0980683Z0
1
L603
2
.
2
uH(
1
608)
1
C5
46
0.
1
uF
R
51
3
1
0K
C52
0
4.7
n
F
1/2
V
CC
VOX
VOX_EN
+3.3V
NJ
M
3
2
4
U5
0
1
-D
1
4
1
4
1
3
12
1
3
12
C51
9
1
.
2n
F
R
1
07
3.9K
C111
1
uF(K)
R
1
6
2
8
2
0R
C1
0
2
2
.
2n
F
R
1
03
15
0K
C1
03
47
p
F
R
1
0
2
47K
C1
0
1
1
uF(K)
R
1
0
1
1
0K
C55
0
5
60
p
F
R
51
0
15
K
R
512
2
0K
R
1
3
5
0.
1
uF(K)
C1
3
5
47
p
F
R
1
36
1
00K
R
111
NA
C1
36
0.
1
uF
C1
37
0.
1
uF(K)
C
R
11
7
C
R
11
6
KD
S1
60E
KD
S1
60E
C1
38
0.
22U
(K)(
1
608)
C1
39
1
0K
Q
11
4
KR
C
404
NJ
M
3
2
4
1
0
5
-D
R
1
37
4.7
M
R
12
0
47K
R
1
38
22
0K
9
8
1
0
C5
49
5
60
p
F
R
511
8.
2
K
C51
8
5
.6
n
F
C521
1
.
2n
F
NJ
M
3
2
4
U5
0
1
-
C
R
5
39
330K
1/2
V
CC
3
2
1
2
4
5
6
7
R
1
94
6.8K
C52
4
33
n
F
R
51
6
12
K
R
51
7
15
K
R
5
38
8.
2
K
R
5
36
330K
R
51
8
5
.6K
1/2
V
CC
+3.3V
2
2
2
PB5
0
1
PTT
DH
T
111
4
S
1
PB5
0
2
F
U
N
1
DH
T
111
4
S
PB5
03
F
U
N
2
DH
T
111
4
S
1
1
C5
70
47
p
F
PTT1
+3.3V
F
U
N_KEY
1
F
U
N_KEY
2
R
5
37
1
K
Q
5
0
5
KRA30
5
Q
5
04
KR
C
404
T
X_AF
2
PTT2
R
52
9 47K
R
5
3
1
47K
R
5
40 47K
R
5
30 47K
R
52
6
1
00R
R
5
4
5
4.7k
C5
37
2
.
2n
F
U1
0
1
_
P
IN3
1
(
S
DA
T
A)
FL
1
0
2
3.
5
79
5M
Hz
C12
0
15p
F
R
1
80
+3.3V
C121
33
n
F
C1
07
0.
1
uF(K)
C1
0
5
15n
F
R
11
0
2
70K
R
11
8
47K
C1
06
47
n
F
R
11
6
1
.
2
K
U1
0
1
-
P
IN
2
6(D
TM
F_IN)
C1
04
15
0
p
F
R
11
7
8.
2
K
+3.3V
R
1
8
1
15
0R
U1
0
2
AK
2
347
C15
3
1
uF(K)
C15
4
1
uF(K)
R
15
0
1
0K(
1
%)
R
151
12
K(
1
%)
U1
0
1
_
P
IN7
2
U1
0
1
_
P
IN63
U1
0
1
_
P
IN64
U1
0
1
_
P
IN6
5
U1
0
1
_
P
IN66
R
1
4
2
330K
IN+
IN-
G
S
VREF
INH
P
WDN
N
C
N
C
ST
D
E
ST
ST/
G
T
O
SC1
O
SC2
V
SS
T
OE
Q
1
Q
2
Q3
Q4
VDD
1
00K
51
K
2
00K
NA
R
1
79
R
1
83
R
1
8
2
T
ONE 4
U1
0
1
_
P
IN79
R
1
40
1
1
9
1
8
1
7
1
6
15
1
4
1
3
12
11
2
0
2
3
4
5
6
7
8
9
1
0
R
1
4
1
1
00K
C11
9
1
0
n
F
68K
T
ONE 3
T
ONE
1
T
ONE
2
R
1
4
5
1M
C115
2
7
p
F
C11
6
2
7
p
F
C11
7
1
.
2n
F
C11
8
1
0uF
/
1
6V
R
1
44
1
00K
R
1
43 9
1
K
RX_AF
2
U1
03
MT
88L70
U1
0
1
_
P
IN30(
C
LK)
U1
0
1
_
P
IN
2
9(
CS
N)
R
52
8
8
2
K
+
+
+
C5
67
1
0uF
/
1
0V(A)
R
5
4
1
330K
R
52
7
1
00K
1
2
3
C5
36
1
0
n
F
NJ
M
3
2
4
U5
0
2
-A
1/2
V
CC
NJ
M
3
2
4
U5
0
2
-
C
R
521
330K
R
51
9
2M
R
52
0
5
60K
R
5
98
2
0K
U5
08
+3.3V
MCP
40
11
(
5
03)
R
5
99
NA
+3.3V
C1
9
1
22
0
p
F
C1
90
1
0uF
/
1
6V
C1
99
470
p
F
1
0R R
1
3
1
R
1
04
47K
C1
00
1
uF(
1
608)
R
1
46
0R
R
1
0
5
47K
R
1
06
47K
12
1
3
1
4
CS
N
T
E
ST
XIN
XO
UT
VDD
V
SS
M
OD
DIN
DIN0
EX
T
IN
T
XIN
FIL0
RXIN0
RXIN
T
XIN0
AGND
AGNDIN
RXO
UT
LI
M
LV
EX
T
INO
R
S
AO
UT
TS
AO
UT
S
DA
T
A
SC
LK
15
1
6
1
7
1
8
1
9
2
0
21
22
2
3
2
4
1
2
3
4
5
6
7
8
9
11
1
0
C52
8
1
8
n
F
M
OD_
C
ON_
U/
D
M
OD_
C
ON_
CS
C5
47
NA
C52
9
0.
1
uF
C5
30
1
0
n
F
C5
4
2
1
0
n
F
NJ
M
3
2
4
U5
0
1
-A
T
O_V
CTC
XO&V
C
O
Summary of Contents for CP Series
Page 1: ...Portable Radios Detailed Service Manual EP350 ...
Page 2: ......
Page 8: ...iv Notes ...
Page 18: ...xiv Notes ...
Page 26: ...Notes 2 4 Test Equipment Service Aids and Service Tools Service Aids ...
Page 72: ...7 26 Notes ...
Page 110: ...10 23 Notes ...
Page 153: ......