Kenwood NXR-700 Service Manual page 107

F
FINAL UNIT (PA SECTION)
(X45-3810-XX) (A/5)
DIRECTIONAL COUPLER
FORWARD
C85
33p
R38
150
TX H:3.3V TX H:1.8V
L:1.0V L:0.9V
K K2
RX:0V RX:8.0mV
FWD
C89
OP AMP
*
RFL
R35 1000p
IC4
NJM2904E-ZB
R53
*
C77
1 8 150k
AoUT V-
2 7 C96
A-IN BoUT
3 6 1000p
A+IN B-IN
*
R36
4 5
GND B+IN
R54
C78
150k
1000p
C97
C75 1000p
1000p
R45
0
OP AMP
R50
IC5
NJM2904E-ZB
100k
*
C95
1
8
AoUT V-
2
7
A-IN BoUT
3
6
A+IN B-IN
R51 4
5
GND B+IN
100k
*
C94
R89
0
OP AMP
R137 R136
IC15
NJM2904E-ZB
100k 390k
C150 1 8
AoUT V-
0.1u 2 7
A-IN BoUT
3 6
A+IN B-IN
C167 4 5
GND B+IN
0.1u
R138 R110
OVERVOLTAGE
100k 390k
PROTECTION
D19
02CZ4.7(Y)F
X45-3810-XX L13 L14 L15 L18 R26 R33
-10 K 56n 56n 56n 5.6n 82 100k
-11 K2 68n 68n 68n NO 47 390k
G
SCHEMATIC DIAGRAM
Note : The components marked with a dot (
RF SW
C105 D11
1000p L7091CER
REFLECT
*
C87
R47
150
TX:8V
K
RX:0V
C108
1000p
DC SW
Q4
2SJ506-E(S)
DETECTOR
R56
100k
D10
HSB88WS
DC SW
C104
1000p
SSM3K15TE(F)
R57
100k
ANT SW
C99
1000p
R70
0
TEMPERATURE
SENSOR
IC7
0V
S-8130AC
5 4
C113 4700p
VSS CD1
6 3
C114 4700p
RESET CD2
7 2
R69 10k
RT DET
C191 1u
8 1
VoUT VDD
C115 1000p
Q8
SSM3K15TE(F)
R66 10
DC SW
C88
1000p
PRT
1.1V
PWR
C162 0.1u
PRT
*
*
R39 R152
*
R37
*
R33
*
*
R153
R40
C82
0.1u
C169
1000p
R107
0
K:1.4V
FC1
K2:1.7V
R35 R36 R37 R39 R40 R124 R144 R145
82k 82k 100k 270k 270k 10 0 NO
68k 68k 390k 560k 560k 18 NO 0
H
•
) are parts of layer 1.
ANT SW
HPF
RF SW
* * * *
D16 C122 C123 L13
L7091CER
*
C161
RF SW RF SW
TX H:8V
5V
K2 L:8V
RX:22.7mV
R72
0
IC9
S24CS02AFJTBG
8
1
A0 VCC
7
2
A1 WP
6
3
A2 SCL
5
4
GND SDA
Q5
E2PROM
DC SW
D
R68
100k
R71
0
OP AMP
IC8
C127
NJM2904E-ZB
1000p
1 8
AoUT V-
2 7
A-IN BoUT
3 6
A+IN B-IN
4
5
GND B+IN
CP1
RK75GB1J103J
OP AMP
IC6
NJM2904E-ZB
C98
1 8
AoUT V-
1000p
2 7
A-IN BoUT
R49
3 6
A+IN B-IN
0
4 5
GND B+IN
R152 R153 C77 C87 C94 C95 C100 C116
NO NO 1000p 47p 0.1u 0.1u 1000p NO
470k 470k NO 56p NO 1000p 0.1u 7p
I
NXR-700
TX H:5W
L:0.5W
RX :0W
LPF
*
L14 L15 R125 CN22
TX ANT
0
CN19
C124
RX
1000p
CN20
36 GND
35 GND
Q6
34 WP
SSM3K15TE(F)
33 GND
32 D_GND
31 SDA
30 D_GND
29 SCK
28 D_GND
27 CONT_5.0V
26 D_GND
25 TEMP_PRT
24 GND
23 ANT_SW
22 GND
21 TEMP_RST
20 GND
19 FAN_CONT2
18 GND
17 FAN_CONT
16 GND
15 PWR_CONT
14 GND
13 PWR_PRT
12 GND
11 RFL_PWR
10 GND
9 FWD_PWR
8 GND
7 FAN_CURR
6 GND
5 PA_CURR
FC2 4 GND
3 NC(FAN_CURR2)
2 GND
1 GND
*
R144
*
R145
C119 C122 C123 C126 C130 C131 C147 C148 C158
NO 56p 56p 18p NO 33p 33p NO
2p 100p 33p 22p 3p 39p 39p 3p
X45-381 (A/5) 2/2
J
1
2
3
4
5
6
C161 C193 7
22p 12p NO
27p 15p 68p
95