Kenwood NXR-800 Service Manual page 125

F
FINAL UNIT (PA SECTION)
(X45-3820-10) (A/5)
DIRECTIONAL COUPLER
FORWARD
C85
8p
R38
150
TX H:3.34V
L:0.976V
C89
RX:0V
FWD
470p
OP AMP
R35 RFL
IC4
NJM2904E-ZB
82k
R53
C77 1 8 150k
AoUT V-
470p 2 7 C96
A-IN BoUT
3 6 470p
A+IN B-IN
R36 4 5
GND B+IN
82k R54
C78
150k
470p
C97
C75 470p
470p
R45
OP AMP
R50
IC5
NJM2904E-ZB
100k
C95 1
AoUT V-
2
0.1u
A-IN BoUT
3
A+IN B-IN
R51 4
GND B+IN
100k
C94
0.1u
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
Note : The components marked with a dot (
G
SCHEMATIC DIAGRAM
RF SW
C105
470p L7091CER
REFLECT
C87
12p
R47
150
C108
470p
DC SW
Q4
2SJ506-E(S)
DETECTOR
R56
100k
D10
HSB88WS
C104
470p
SSM3K15TE(F)
R57
100k
ANT SW
C99
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
C191 1u
8 1
VoUT VDD
C115 470p
Q8
SSM3K15TE(F)
R66 10
DC SW
C88
0 470p
PRT
1.1V
PWR
C162 0.1u
8
PRT
R39 330k
7
R37 100k
6
R33 100k
5
R40 330k
C82 0.1u
C169
470p
R107
0
FC1
1.35V
•
) are parts of layer 1.
H
ANT SW
HPF
RF SW
D11 D16 C122 C123 L13
L7091CER 100p 33p 15n
RF SW 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
DC SW
Q5
E2PROM
D
R68
100k
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
L14 L15 R125 CN22
TX ANT
15n 15n 0
CN19
C124
RX
470p
CN20
36 GND
35 GND
Q6
34 WP
SSM3K15TE(F)
33 GND
DC SW
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
0
X45-382 (A/5) 2/2
J
1
2
3
4
5
6
7
113