Kenwood NXR-700 Service Manual page 115

F
TX UNIT (X56-3110-XX) (A/3)
7.7V
9Vʼ
C163
470p
C156 C162
9Vʼ
470p 470p
A-4
RF AMP
Q104
K:292-348MHz-->
2SC3356-A(R24)
K2:272-308MHz-->
C152
7.7V
470p
1.4V
2.1V
5V #2
LPF1 7dB
L112 L113
R145 R147 C167
27n 27n 0 47 10p
Q106
2SC3356-A(R24)
RF AMP
DDS (4.5MHz)
4.5MHz DDS
IC202
AD9835BRUZ
R243 1 FSADJUST 16
CoMP
3.9k 2 15
REFIN AVDD
C252 3 14
REFoUT IoUT
0.01u 4 13
5V
DVDD AGND
R242 5 12
DGND PSEL0
R241 470k 6 11
MCLK PSEL1
0 7 10
SCLK
FSELECT
8 9
SDAT FSYNC
R247 100k
R248 100k
R249 100k
5V #2
<--19.2MHz
8V #2
5V #2
C308 470p
C307 0.1u
OP-AMP
IC301
NJM2732V
1 8
AoUTPUT
V+
C302 2 7
A-INPUT
BoUTPUT
10p 3 6
A+INPUT
B-INPUT
4 5
GND
B+INPUT
CN701
MO
G
SCHEMATIC DIAGRAM
VOLTAGE
REGULATOR
NJM2386ADL3-09
RIPPLE FILTER AMP
9V
Q105
2SC4116(BL)F R134
9V
22
R139
1k
No ATT
K:292-348MHz-->
L117
C164 K2:272-308MHz--> R202
47p 27n 0
L118
27n
5V #2
C171
0.01u C173
470p
C172
470p
K:1.5V
3dB
5V K2:1.4V
L120
C174 R154
22n 470p 18
0.9V
A-5
5V #1
C258
C253
10u35 0.1u
5V
C254
R255 C259
C256
0.1u
270k 0.1u
0.01u C255
5V
A-8
0.01u C257
RF AMP
LPF4
Q211
0.1u
2SC4617(R)
K:2.8V K:2.2V
L214
C260 R257
K2:2.7V K2:2.1V
0.1u 0 47u
4.5MHz -->
DC SW
Q210
SSM3K15TE(F)
R312 150k
5V
C313 120p
C316
10p R381
100k
X56-3110-XX L119 R316
-10 K 15n 68k
-11 K2 18n 56k
H
13.8V
IC104
V-2
PRESCALER
K:146-174MHz-->
IC811
10dB
K2:136-154MHz-->
PE3511-52
C871 1 6 C872 R210
NC oUT
1000p 2 5 1000p 68
GND1 GND2
C201 3 4 C873
IN VDD
470p 1000p
C874
0.01u
T:3V
R:0V
VOLTAGE
REGULATOR
C879
IC810
TK11230CMCL-G
10u35
C876 4
VoUT
NoISEPASS
470p 5
5V
GND2 GND1
6
VIN VCoNT
C270
0.1u
C271
0.1u
BPF1
5V
3dB
CF201
L72-1029-05
A-7 RF AMP
L215
R258 R260 C269
Q212
2SC4617(R)
47u 0 330 0.1u
C272
3.6V
0.1u
K:3.0V
K2:2.9V
5V #2
OP-AMP
5V
C387
IC308
NJM2732V
0.1u
C388 8 1
AoUTPUT
V+
470p 7 2
A-INPUT
BoUTPUT
6 3
A+INPUT
B-INPUT
5 4
GND
B+INPUT
R376 C391
56k 100u
I
NXR-700
LPF20
L810 L811
T:1.9V
56n 56n
R:0V
A-2
L203
C210
18p 33n
Q202
2SC5337
RF AMP
3 C875
2 0.1u
1 C878
470p
<-- 4.5MHz
K:5V
K2:4.9V
K:2.5V
LPF3 3dB
K2:2.4V
L216 L217 L218
R266 R268 C282
0 2.2u 2.2u 18 0.1u 680n
MOD
DIGITAL POTENTIOMETER
CN301
IC304
C328 100u
M62364FP-F
C329 100u 1 24 R344
MOD VIN1 VIN8
2 23 R345
VoUT1 VoUT8
3 22 R346
VoUT2 VoUT7
4 21 R347
VIN2 VIN7
5 20
5V
VDD GND
6 19
R321 10
VR_EN LD RESET
R322 10 7 18
SCLK0 CLK VDAREF
R323 10 8 17
SDo0 DI D0
R327 0 9 16 R348
PAG VIN3 VIN6
R328 0 10 15 R349
VoUT3 VoUT6
R329 100k 11 14 R350
VoUT4 VoUT5
R330 100k 12 13 R351
VIN4 VIN5
X56-311 (A/3) 2/6
J
13.8V
8V #1ʼ
T:7.8V
R:0V
C214 R218 C217
18
33p 1000p
3dB
T:1.2V
R:0V
CN201
VS2
D_oN
5V #1
C287 R276
0.1u 0
A-6 No ATT
Q213
2SC4617(R)
RF AMP
1.9V
5V #2
<--19.2MHz
8V #2
5V #2
100k
100k
100k
100k
R357
100
2.5V
100k
100k
100k
100k
103