Kenwood NXR-901 Service Manual page 135

FINAL UNIT (X45-3870-11) (A/4)
VARIABLE ATTENUATOR
1 CoNTROL_CURRENT1
2
GND1
16dBm
3
CN1 GND2
R2 C194
RF IN 4
RFIN
0
47p
FINAL UNIT
(DC SECTION)
(X45-3870-11) (C/4)
CN29 B
CN2
C90 47p
C86 0.01u
CN15
1
RX UNIT
C83 47p
2
X55-312
-CN44 3 C80 0.01u
B
CN12
1 CN30 E
CN21
TX UNIT
C72 47p
2
X56-315 (A/3)
-CN801 3 C70 0.01u
CN11
1
2
CONTROL UNIT1
X53-413
3 C61 47p
-CN4
C59 0.01u
4
C188
47u35
FINAL UNIT
(FUSE SECTION)
D5
(X45-3870-11) (B/4)
DSM3MA1-RPB
D4
CN25 CN23 CN27
Z5W27V
CN4 D4,5
A
DC
SURGE PROTECTION
CN26 CN24 CN28
R163
1.2k
C202
47p
C198
0.01u
8
CoNTROL_CURRENT2
7
GND4
6
MICROSTRIPLINE
GND3
C195 R145 C302
5 1
RFoUT RFIN1
47p 0 1p
2
RFIN2
IC20
T : 5.03V 3
AV111-12LF
VBIAS
R : 0V
4
VCC2
Q501
2SA1832F
C506
47p
R506
T : 5.03V
R : 0V
10k
C505
Q15
2SJ506-E(S)
0.1u
L1
Q22
CURRENT SENSE SSM3K15TE(F)
R123
10k
IC1
LTC6101BIS5-F
SSM3K15TE(F)
CURRENT
T-H : 1.60V
MONITOR
L : 2.70V
R : 3.07V
T-H : 0.79V
L : 0.68V PA R151
R : 0V CURR 0
R9 OP AMP
R17 10k
R102 100
IC2
470
R21 10k NJM2904E-ZB
C200 1 8
AoUT V-
0.01u
2 7
F1 A-IN BoUT
2.5A
3 6
A+IN B-IN
F53-0324-15 4 5
GND B+IN
VOLTAGE REGULATOR
IC17
R142
KIA7805API
0
1 3 5V
IN oUT
VOLTAGE REGULATOR
IC18
KIA7808API
1 3
8V
IN oUT
VOLTAGE REGULATOR
IC11
NJM78M05DL1AZB
1 3 5V
IN oUT
VOLTAGE REGULATOR
IC12
KIA7805API
1 3 5V C170 47p
IN oUT
Q3
SSM3J01F
Q3,14
DC SWITCH FAN ON : 5.07V
OFF : 0V
Q14
SSM3K15TE(F)
RF POWER AMP
IC21
ADL5604ACPZ
MICROSTRIPLINE
12
RFoUT4
11
RFoUT3
10
RFoUT2
9
RFoUT1
Q2,15,22
DC SWITCH
T : 4.84V
ANT SW R : 0V
R20 ANT_SW ANT_SW
22k
Q2
TEMP_PRT TEMP_PRT
C64
47p
R28 820k
C327
0.033u
R207 FWD_PWR FWD_PWR
47k
5V 5V
R165
470k
R501
PWR CONT
100k R503
PWR_CONT
PA_CURR PA_CURR
B B
SURGE PROTECTION
D6
1SS355
C38
10u25
C40
0.01u
C39
47p
FAN_CONT FAN_CONT
CN8
M FAN 1
ISOLATOR DIRECTIONAL COUPLER
L31
C310 C311 C312 C105
47p 47p 47p 47p
REFLECT
L39-1593-05
R38 C87
100 4p
R34 R47
100 330
R44
270
RF DETECTION
T-H : 2.35V RF DETECTION
L : 1.10V
FWD R : 0V
C89 T-H : 0V
C104
L : 0V
R31 R35 OP AMP
47p RFL R : 0V
100k 220k 47p
IC4
R53 R56
C77 150k 100k
1 8
AoUT V-
47p
2 7 C96
A-IN BoUT
47p
3 6
A+IN B-IN
R36 4 5
GND B+IN
R32 220k
100k C78
NJM2904E-ZB
47p
D22
HSM88AS-E
C63 RF DETECTION
47p
IC6 TEMPERATURE SENSOR
R502
NJM2904E-ZB
470k
C503
1 8 R62
AoUT V- 0.9V
0.047u 22k
2 7
A-IN BoUT
3 6
A+IN B-IN
10k
4 5
GND B+IN
OP AMP
PWR_CONT
C169
47p
R137 R136
IC15
100k 390k NJM2904E-ZB
C150
1 8
AoUT V-
R107
0.1u
0
2 7
A-IN BoUT
3 6 R108 0
A+IN B-IN
C167 R109
4 5
GND B+IN
0.1u 0
R138
100k R110
OP AMP FC1 1.13V
390k
D23
OVERVOLTAGE PROTECTION
T-H : 0.36W
L : 0.1W
HPF LPF
R125
CN22
C122 C123 L20 L19 L18 0
TX ANT
6p 6p
R72
0
IC9
1 8
A0 VCC
2 7
A1 WP
CN20
3 6
A2 SCL 36 GND
4 5
35 GND
GND SDA
34 WP
S24CS02AFJTBG
33 GND
EEPROM
32 D_GND
Q6 31 SDA
D
SSM3K15TE(F)
30 D_GND
DC SWITCH
29 SCK
28 DGND_
27 CONT _5.0V
0V
26 DGND_
R70 R71
0 0 25 TEMP_PRT
R157 R69
24 GND
0 1k
23 ANT_SW
IC7
22 GND
1 8
R169
VREF V+ 21 TEMP_RST
2 7 Q8 10k
20 GND
VT2 oUT1
SSM3K15TE(F)
3 6
VT1 oUT2 19 FAN_CONT2
DC SWITCH
4 5
GND VTEMP 18 GND
17 FAN_CONT
LM56BIMM/NOPB
16 GND
15 PWR_CONT
14 GND
13 PA_BIAS
12 GND
11 RFL_PWR
10 GND
9 FWD_PWR
8 GND
7 FAN_CURR
6 GND
5 PA_CURR
4 GND
3 FAN_CURR2
2 GND
1 GND
R802
0