Kenwood NXR-700 Service Manual page 114

A
NXR-700
TX UNIT(X56-3110-XX)(A/3)
1
CN104 CN108
CN102 CN106
*
R881
*
R882
CN105 CN109
CN103 CN107
2
Q1
VCO_A:153M:2.38V 2.65V
K
VCO_B:167M:2.44V 2.65V
VCO_A:140.5M 2.37V
K2
VCO_B:149.5M 2.40V
CN101
CV
LMC7101BIM5
R118 4
INPUT-
CVT
0
5
V-
C187
VCO_MOD
100u
3
DC SW
DC SW
Q109
Q110
2SA1832F
SSM3K15TE(F)
0V
4
R165
440_CE
R166
SCLK1
R167
SDo1
R168
440_EN
5
LDT
CN810
LDT
R306
132_CE
R307
SCLK1
R308
SDo1
R309
132_EN
6
DC SW
Q303
2SA1832F
DC SW
Q301
SSM3K15TE(F)
0V
VCO_MOD
D_PC
7
102
X56-311 (A/3) 1/6
B
SCHEMATIC DIAGRAM
CN112 CN116 CN120
CN110 CN114 CN118
CN113 CN117 CN121
CN111 CN115 CN119
9Vʼ
C120
0.01u
C122 R856
OP-AMP
470p 22
IC102
3
INPUT+
2
V+
1
OUTPUT
<-- K2:272-308MHz
<-- K:292-348MHz
5V #2
R172
47
R171
47
R160
100k
1k
1k
5V
1k
5V
1k
5V #2
C320
0.01u
C321
470p
OUTPUT
INDICATOR
R870
D301
B30-2230-05 100
5V
DC SW
Q302
SSM3K15TE(F)
PLL
19.2MHz MOD PLL
IC303
ADF4001BRUZ
5V
C314
0.01u 9 8 R319
DGND REFIN
1k 10 7 C323 100k
CE AVDD
1k 11 6 C325
0.01u
CLK RFINA
1k 12 5 C324 0.01u
DATA RFINB
1k 13 4 0.01u
LE AGND
14 3
MUXoUT CPGND
15 2
DVDD CP
16 1 R318
5V
VP RSET
4.7k
L304
10u
5V #2
C
E100
F10-3081-04
*
L125 D108 C182
R176 L128
0 1.5u 3.5T
1SV283F
D107,108
FREQUENCY
CONTROL
R178
0
D101,102
FREQUENCY
CONTROL
L105 *
R120 R123 D102 C133 L108
10 0 1.5u 1SV283F 3.5T
R188
0
LPF2
L210 L211
<-- 4.5MHz
1.5u 1.8u
C108 470p
C240 C241
0.1u 220p 82p
C109
470p
C110
0.1u
C111
R173 1k
5V
5V
RF PLL
IC101
LMX2352TMX/NP
R174
1k
C352
C112 0.1u 18p
L308
C343
5V
C113 470p
1.6V A-9
0.01u 390n
C114 0.1u
RF AMP
C326
C115 470p Q304
2SC4617(R)
0.01u
1.3V
C319
0.1u
LPF8
BUFFER AMP
IC302
C305
NJU6368PF1
1 6 18p
FoUT VSS
L301
2 5 C312 C303
VDD XT
3 4 C317 0.01u 390n 0.01u
XT CoNT
0.1u
LPF7
C330 C336
47p 18p
L305 L307
C344
A-10
330n 390n 0.01u Q305
2SC4617(R)
K:1.1V
RF AMP
K2:1.2V
R333 R337 R343
0 27k 0
SUMMING-AMP
MB
IC305
NJM2732V
CN302
1
AoUTPUT
*
R334 2
A-INPUT
BoUTPUT
C350 10p 3
A+INPUT
B-INPUT
4
GND
B+INPUT
X56-3110-XX R334 R336
-10 K 47k 330k
-11 K2 33k 270k
D
*
C189 C193 C194
10p(C) 10p(C)
Q102
C195
2SK508NV(K52) R184
0.75p(B)
47
RF VCO
VCO_A:1.1V
VCO_B:1.7V
DC SW
Q107
7.7V
C188 2SC4116(BL)F
MODULATION
CONTROL
470p
VCO-A
C192
470p
R181
9Vʼ
100k
* * *
C136 C142 C145
Q103
2SK508NV(K52) C147 R133
0.75p(B) 47
VCO_A:1.6V
K
RF VCO
VCO_B:1.1V
DC SW
7.7V
Q108
C135
2SC4116(BL)F
MODULATION
470p
CONTROL
VCO-B
C140
9Vʼ
470p
BUFFER AMP
LPF6 IC307
NJU6368PF1
C355
5V
6 1
47p
VSS FoUT
L310
R379 5 2 C367
XT VDD
330n 0 C360 4 3 0.01u
CoNT XT
0.01u
19.2MHz -->
R303
0
K:7.7V
7.9V
4.7V
K2:7.8V
C370 R370 C379
1.7V
A-11
C356 R355 C364 0.01u 1.8k 0.01u
Q307
2SC4617(R)
0.01u 220 0.01u
K:4.1V
RF AMP
K2:4.0V
<--19.2MHz
C376
470p
5V C361
C381
OP-AMP
0.1u
0.01u
IC306
8 C362
LMC7101BIM5
V+
7 470p
1
OUTPUT
6 V-
2
V+
5 C359
3
INPUT+
10p INPUT-
R360
100k
R881 R882 C132 C133 C134 C136 C142 C145
0 NO NO 12p NO 7p 8p 8p
NO 0 1.5p 18p 2p 9p 10p 10p
E
K:292-320MHz -->
K2:272-290MHz -->
DC SW
Q702
SSM3K15TE(F)
R186 C198
10k 470p
C102 1u
R187 0
Q101
SSM3K15TE(F)
DC SW
K:320-348MHz-->
K2:290-308MHz-->
VCO_A:140.5M 1.5V
K2
VCO_B:149.5M 1.0V
R190
10k
5V #2
5V #2
LPF5
C372
C373
47p
18p
L311 L312
R380
47 390n 330n
5V #2
<--19.2MHz
8V #2
OSC-3 MB_CV2
CN304
2.5V
X301
L77-1981-05
oUT GND
VDD VC
L313
1u
MB_CV1
5
CN303
2.5V
4 R369
CVT-MOD
0
5V #2
C182 C183 C186 C189
18p 2p 1.5p 8p
27p 3p 4p 10p