Kenwood NXR-700 Service Manual page 129

F
TX UNIT (X56-3112-72) (A/3)
7.69V
9V'
.
470p
C163
. .
C162
C156
470p 470p
.
RF AMP
Q104
.
2SC3356-A(R24)
272-308MHz-->
C152
7.69V
470p 1.37V
2.12V
5V #2
. .
. .
L112 L113
<-- 272-308MHz
R145 R147
27n 27n
47
0
5V #1
DDS (4.5MHz)
4.5MHz DDS
IC202
AD9835BRUZ
R243
3.9k
1
FSADJUST
CoMP
2
REFIN
C252
AVDD
0.01u
3
REFoUT
5V
IoUT
4
DVDD
AGND
R242
5
DGND
PSEL0
470k
R241
6
MCLK
PSEL1
0
7
SCLK
FSELECT
8
SDATA
FSYNC
R246
1k
R248 100k
R249
100k
<--19.2MHz
5V #2
.
C308
.
470p
C307
0.1u
.
5V
IC301 .
NJM2732V
R312
.
8 . 150k
1
AoUTPUT
V+
C302
C313
2 7
A-INPUT
BoUTPUT
10p 6 120p
3
A+INPUT
B-INPUT
4 5
GND
B+INPUT
OP-AMP
.
CN701
CHK1.0B
MO
8V #2
G
SCHEMATIC DIAGRAM
VOLTAGE
REGULATOR
IC104
NJM2386ADL3-09
RIPPLE FILTER AMP
9V
Q105
2SC4116(BL)F R134
9V
22
R139
1k
.
272-308MHz-->
C164 L117
R202
27n
0
47p
L118
27n
5V #2
C171
.
0.01u
C173
.
470p
C172
470p
.
1.47V .
5V
C167 . .
L120
10p Q106 C174
2SC3356-A(R24) 22n
470p
RF AMP
0.93V
.
C258
C253
5V
10u 35
0.1u
C256 C254
C259
R255
0.01u
0.1u
270k
0.1u
16 C255
15
C257
0.01u
.
RF AMP
14
0.1u 2.75V
Q211
L214
.
KTC4075E-P(GR
13
4.5MHz --> 2.16V
47u
C260
R257
12
0
0.1u
11
DC SW
10
Q210
SSM3K15TE(F)
9
5V #2
5V #2
5V
OP-AMP
.
.
C387 IC308
.
NJM2732V
0.1u
C388
. 8
AoUTPUT 1
V+
R381 470p
7
A-INPUT 2
BoUTPUT
100k
6
3
A+INPUT
B-INPUT
5
4
GND
B+INPUT
.
R376
56k
H
13.2V
PRESCALER
IC811
PE3511-52
136-154MHz-->
C871 6 R210
C872
1
NC
oUT
1000p 1000p 68
5
2 GND1
GND2
C201 C873
3 4
IN
VDD
1000p
470p
C874
0.01u
T:3V
R:0V
.
C879
5V VOLTAGE
REGULATOR
10u
C876
C875
3
4 VoUT
NoISEPASS
470p 0.1u
2
5 GND2
GND1
C878
6 1
VIN
VCoNT
470p
TK11230CMCL-G
IC810
.
R154
18
<-- 4.5MHz
5V #1
.
C270
0.1u
.
C271
0.1u
.
.
RF AMP
. 3.64V
CF201 .
. . 5V
L72-1029-05
Q212
L215
R258 R260 C269 .
KTC4075E-P(GR
0
47u 330 C272
0.1u
2.99V
0.1u
<--19.2MHz
.
CN301
CHK1.0B C328
MOD
100u
C329
MOD
100u
.
. R321 10
VR_EN
5V
. R322 10
SCLK0
R323 10
.
SDo0
.
. R327 0
PAG
C391
. R328
0
100u
. R329 100k
R330 100k
8V #2
I
NXR-700
T:7.84V
R:0V
L810
L811
T:1.88V
R:0V 8V C214
56n 56n
L203
C210
Q202 33p
2SC5337
33n
18p
RF AMP
CHK1.0B
. .
2.48V
L216 L217 . .
. . 5V
L218
R266 2.2u R268 C282
2.2u
0
18
0.1u 680n
<--19.2MHz
5V #2
.
DIGITAL POTENTIOMETER
IC304
M62364FP-F
.
1
. R344 100k
VIN1
VIN8 24
2
. R345 100k
VoUT1
VoUT8 23
3
. R346 100k
VoUT2
VoUT7 22
R347 100k
4
VIN2
VIN7 21
5
VDD
GND 20
.
6
LD
RESET
19
R357
7
CLK
VDAREF 18
100
2.53V
8 .
DI
D0 17
. R348 100k
9
VIN3
VIN6 16
. R349 100k
10
VoUT3
VoUT6 15
R350 100k
11 .
VoUT4
VoUT5 14
R351 100k
12
VIN4
VIN5 13
8V #2
X56-311 (A/3) 2/6
J
13.2V
R278
0
8V #1'
C217
1000p
R218
18
T:1.07V
R:0V
.
CN201
VS2
D_oN
. .
C287
R276
.
RF AMP 0
0.1u
Q213
KTC4075E-P(GR
1.94V
127