Kenwood NXR-700H Service Manual page 227

Vhf digital base-repeater
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TX UNIT
X56-311 (A/3)-CN802
RF IN
FINAL UNIT(DC SECTION)
(X45-3852-70)(C/5)
CN29
C90
1000p
C86
0.01u
CN15
1
2
C83
1000p
CN30
RX UNIT
X55-309 -CN44
3
C80
0.01u
B
CN12
1
TX UNIT
2
C72
1000p
X56-311 (A/3)-CN801
3
C70
0.01u
CN11
1
2
CONTROL UNIT
3
C61
1000p
X53-413 -CN4
4
C59
0.01u
C188
47u35
SURGE
PROTECTION
D5
DSA3A1-FK
L3
L79-1938-05
FINAL UNIT(FUSE SECTION)
(X45-3852-70)(B/5)
SURGE
PROTECTION
D4
CN25
CN23
CN27
Z5W27V
CN4
A
DC
CN26
CN24
CN28
CN8
FAN 1
POWER MODULE
IC10
RA60H13171123
FINAL UNIT(PA SECTION)
(X45-3852-70)(A/5)
TX H:4.26V
TX H:12.8V
TX:100mW
L:4.03V
L:13.05V
RX:0W
3DB ATT
RX
:0V
RX
:13.2V
HPF
R2
CN1
L5
L6
C141
18
120p
L1
L92-0179-05
C46
L2
1000p
L92-0179-05
OVERVOLTAGE
PROTECTION
D7
02CZ5.6(Y)F
CURRENT SENSE
DETECTOR
R123
C47
HSB88WS
10k
0.01u
CURRENT
MONITOR
IC1
LTC6101BIS5-F
R20
100k
1000p
TX H:2.69V
L:1.21V
RX:0V
DC SW
Q2
PA
CN2
SSM3K15TE(F)
CURR
R102
R9
100
100
0.5
CN21
L4
L92-0131-05
R21
820k
C49
0.047u
NJM2904E-ZB
C50
1000p
1
AoUT
2
A-IN
3
A+IN
R22
820k
4
GND
C51
1000p
R17
10k
VR2
10k
R142
R32-0754-05
VOLTAGE
VOLTAGE
REGULATOR
REGULATOR
IC11
IC3
NJM7808FA-ZB
TA78L05FF
8V
3
1
3
IN
oUT
CoM
2
2
VOLTAGE
REGULATOR
IC12
SURGE
NJM2388F12-ZB
12V
PROTECTION
D6
1SS355
C38
22u35
C40
0.01u
C39
1000p
1
2
C60
120p
R31
R35
100k
82k
C77
D9
1000p
R36
C63
82k
R32
C78
100k
1000p
C75
1000p
OP AMP
IC2
8
C64
V-
7
1000p
BoUT
6
B-IN
5
C67
B+IN
1000p
R28
470k
PWR CONT
0
5V
1
ANT SW
RF SW
DIRECTIONAL COUPLER
D11
C105
1000p
L7091CER
D16
FORWARD
REFLECT
C87
C85
L7091CER
33p
33p
RF SW
R38
R47
150
150
C108
TX H:2.74V
L:1.21V
1000p
RX:0V
FWD
REF
C89
DC SW
OP AMP
Q4
1000p
2SJ506-E(S)
IC4
R53
R56
NJM2904E-ZB
DETECTOR
1
8
150k
100k
D10
AoUT
V-
HSB88WS
2
7
C96
A-IN
BoUT
3
6
1000p
A+IN
B-IN
DC SW
4
5
GND
B+IN
C104
Q5
SSM3K15TE(F)
1000p
R54
150k
ANT SW
C97
R57
1000p
100k
R68
C99
100k
1000p
R70
0
TEMPERATURE
SENSOR
IC7
0V
S-8130AC
5
4
1
C113
4700p
VSS
CD1
6
3
C114
4700p
2
RESET
CD2
7
2
3
R69
10k
RT
DET
8
1
4
C191
1u
VoUT
VDD
C115
1000p
Q8
SSM3K15TE(F)
R66
10
DC SW
R45
C88
0
1000p
OP AMP
R50
IC5
PRT
NJM2904E-ZB
100k
C95
1
C162
0.1u
8
PWR
AoUT
V-
PRT
2
R39
680k
1000p
7
A-IN
BoUT
3
6
R37
820k
A+IN
B-IN
R51
4
5
R33
820k
GND
B+IN
100k
R40
680k
C82
0.1u
R89
0
TX H:25W
LPF
L:5W
RX
:0W
HPF
CN22
C122
C123
L13
L14
L15
R125
TX ANT
47p
47p
56n
56n
56n
0
CN19
C161
C124
RX
15p
1000p
D14,15
RF SW
5V
TX:8V
R72
RX:0V
0
IC9
S24CS02AFJTBG
8
1
A0
VCC
2
7
A1
WP
CN20
6
3
36
GND
A2
SCL
5
4
35
GND
GND
SDA
Q6
SSM3K15TE(F)
34
WP
33
GND
E2PROM
DC SW
32
D_GND
31
SDA
D
30
D_GND
29
SCK
28
D_GND
27
CONT_5.0V
26
D_GND
R71
25
TEMP_PRT
0
24
GND
OP AMP
23
ANT_SW
IC8
C127
22
GND
NJM2904E-ZB
1000p
8
21
TEMP_RST
AoUT
V-
7
20
GND
A-IN
BoUT
6
19
FAN_CONT2
A+IN
B-IN
5
18
GND
GND
B+IN
17
FAN_CONT
CP1
RK75GB1J103J
16
GND
15
PWR_CONT
14
GND
13
PWR_PRT
12
GND
11
RFL_PWR
10
GND
9
FWD_PWR
OP AMP
8
GND
IC6
7
FAN_CURR
NJM2904E-ZB
1
8
C98
6
GND
AoUT
V-
1000p
5
PA_CURR
2
7
A-IN
BoUT
R49
4
GND
3
6
A+IN
B-IN
0
3
NC(FAN_CURR2)
4
5
GND
B+IN
2
GND
1
GND
R146
0

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