Kenwood NXR-700 Service Manual page 121

F
FINAL UNIT (PA SECTION)
(X45-3852-71) (A/5)
DIRECTIONAL COUPLER
FORWARD
C89
OP AMP
1000p
IC4
REF
NJM2904E-ZB
R53 R56
8
1
150k 100k
AoUT V-
C96
2 7
BoUT
A-IN
1000p
3 6
A+IN B-IN
4 5
GND B+IN
R54
150k
C97
R57
1000p 100k
C99 1000p
TEMP_PRT
C88
OP AMP PRT
1000p
IC5
C162
NJM2904E-ZB
0.1u
8
1
AoUT V-
R39 R37
2 7
A-IN BoUT
680k 820k
3 6
A+IN B-IN
R33
5
4
GND B+IN
820k
R40
680k
R89
C82
0
0.1u
PWR_CONT
FAN_CONT
PA_CURR
G
SCHEMATIC DIAGRAM
C105
1000p
D16
REFLECT
C87
33p
R47
150
R52
8.2
C108
1000p
DC SW
Q7
MTM13127
DETECTOR
D10
HSB88WS
DC SW
ANT SW Q5
SSM3K15TE(F)
C104
1000p
R68
100k
TEMPERATURE
SENSOR
C113
5 4
VSS
CD1
PWR PRT
C114
6 3
RESET CD2
R69 10k
2
7
RT DET
C191 1u
1
8
VDD
VoUT
C115 1000p
IC7
R104
S-8130AC
Q8
39k
SSM3K15TE(F)
DC SW
Note : The components marked with a dot (
H
ANT SW
RF SW
HPF
D11 L8103R
C122 C123 L13 L14
56n
56n
36p 33p
L8103R
RF SW
C161
18p
D19,20
RF SW
5V
TX:8V
0
R72
RX:0V
IC9
8
1
A0 VCC
2
7
A1
WP
3 6
A2 SCL
5
4
GND
SDA
S24CS02AFJTBG
EEPROM
DC SW
D
2V
R70 R71
0 0
OP AMP
IC8
0V
NJM2904E-ZB
1000p
4700p
R150
8
1
AoUT V-
0
4700p
7
2
A-IN BoUT
6
3
A+IN
B-IN
4 5
GND B+IN
R66
10
R46
0
OP AMP
IC6
1
AoUT V-
2
BoUT
A-IN
3
A+IN B-IN
4
GND B+IN
NJM2904E-ZB
•
) are parts of layer 1.
I
NXR-700
TX H:25W
L:5W
RX :0W
LPF
L15 R125
CN22
56n
0
TX ANT
RX
C124
CN19
1000p
CN20
GND
36
GND
Q6
35
SSM3K15TE(F) WP
34
GND
33
D_GND
32
SDA
31
D_GND
30
SCK
29
D_GND
28
CONT_5.0V
27
D_GND
26
C127
TEMP_PRT
25
GND
24
ANT_SW
CP1
23
GND
22
R156
TEMP_RST
21
0
GND
10kX4
20
FAN_CONT2
19
GND
18
FAN_CONT
17
GND
16
PWR_CONT
15
GND
14
PWR_PRT
13
GND
12
RFL_PWR
11
GND
10
FWD_PWR
9
GND
8
FAN_CURR
C98
8
7
1000p GND
7
6
PA_CURR
R49
6
5
0
GND
5
4
NC(FAN_CURR2)
3
GND
2
GND
1
R145
0
X45-385 (A/5) 2/2
J
1
2
3
4
5
6
7
119