Kenwood NXR-800 Service Manual page 61

F
FINAL UNIT (PA SECTION)
(X45-3820-13) (A/5)
DIRECTIONAL COUPLER
FORWARD
C85
8p
R38
150
TX H:3.3V
L:1.0V
RX:0V
FWD
C89
OP AMP
R35 470p RFL
IC4
NJM2904E-ZB
68k
R53
C77
1 8 180k
AoUT V-
C96
470p 2 7
A-IN BoUT
3 6 470p
A+IN B-IN
R36 4 5
GND B+IN
68k R54
C78
180k
470p
C97
C75 470p
470p
R45
0
OP AMP
R50
IC5
NJM2904E-ZB
100k
C95 1
8
AoUT V-
2
470p 7
A-IN BoUT
3
6
A+IN B-IN
R51 4
5
GND B+IN
100k
C94
100p
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
100k 390k
OVERVOLTAGE
PROTECTION
D19
02CZ4.7(Y)F
Note : The components marked with a dot (
G
SCHEMATIC DIAGRAM
ANT SW
RF SW
C105 D11
L7091CER
470p
REFLECT
C87
18p
R47
150
C108
470p
DC SW
Q4
2SJ506-E(S)
DETECTOR
R56
100k
D10
HSB88WS
DC SW
C104
SSM3K15TE(F)
470p
ANT SW
R57
100k
R68
C99
100k
470p
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
8 1
C191 1u
VoUT VDD
C115 470p
Q8
SSM3K15TE(F)
R66 10
DC SW
C88
470p
PRT
1.1V
C162 0.1u PWR
PRT
R39 820k
R37 560k
R33 560k
R40 820k
C82 0.1u
C169
470p
R107
0
FC1
1.4V
•
) are parts of layer 1.
H
HPF
RF SW
D16
C122 C123 L13 L14
22n 22n
L7091CER 33p
68p
D14,15
RF SW
TX:8V
5V
RX:0V
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
R71
0
OP AMP
IC8
C127
NJM2904E-ZB
470p
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-
470p
2 7
A-IN BoUT
R49
3 6
A+IN B-IN
0
4 5
GND B+IN
I
NXR-800
TX H:5W
L:0.5W
LPF RX :0W
CN22
L15 R125
TX ANT
22n
0
CN19
RX
C124
18p
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
R147
0
X45-382 (A/5) 2/2
J
1
2
3
4
5
6
7
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