Kenwood NXR-800 Service Manual Supplement page 106

K
NXR-800
W:-75.7dBm
1 4
K
N:-75.5dBm
L123
CN47 W:-74.0dBm
K2
N:-76.0dBm
2 3 3.3u
D13
JDP4P02U
RF SW
C573 R351
0.01u 220
C577
0.01u
RF SW
L125
C428
IF SYSTEM
D14
150n 56p
JDP4P02U IC12
C406 TA31137FNG
2 3
0.01u
L126
C429
1 4
VCC=5.0V
150n 56p
C443
0.047u
W:6.7V
K
N:1.2mV
W:6.7V
K
W:6.6V
N:1.2mV
K2
N:0.4mV
W:6.6V
K2
N:0.3mV CF2
RF SW
L72-1028-05
C440 C454
R254 R257
D15
DAN235E
0.47u 0 0 0.47u
R249 R259
2.2k 2.2k
R250 R260
W:1.3mV
K
10k 10k
N:4.4V CF3
L72-1027-05
W:4.2mV
K2 C455
C441 R255 R258
N:4.3V
0.47u 0 0
0.47u
VOLTAGE
REGULATOR
IC28
AD1582
1 3
VIN
VoUT
GND
2
C557
0.047u
R326 10 C558
470p
ADC
IC30
AD7908BRU
CN65
ASQ
BUFFER AMP
IC8
NJU6368PF1
L79 L81
R149 1 FoUT 6
VSS
1u 820n 2 VDD 5
820
XT
3 XT 4
CoNT
C290
0.047u
C279
0.047u
L88
8.2u
94
X55-310 3/6
L
SCHEMATIC DIAGRAM
L128
L34-4725-05
3
R270 C470 8
10k
470p
C459
4
220p
C461
C477
220p 0.1u
R278
1.5k
C427 C474
0.47u 0.47u
K2
CF5
RF SW RF SW L72-1028-05
C587 R366
D16 D19
DAN235E DAN235E
0.47u 0
R369
10k
R370
W:1.2mV W:1.2mV
10k
N:4.34V N:4.33V CF7
L72-1027-05
C589 R371
0.47u 0
R324 100k
C542 0.1u
R340 1k R321 100k
R341 1k R325 100k
R342 1k
OP-AMP
IC29
NJM2732V
L130
C541
10u
0.1u
R337
1k R323
0
K:4.8V
K2:4.9V
L100 L103
C301 C342
2SC4617(R)
390n 390n 0.047u
0.047u
K:1.1V
K2:0.9V
M
DC SW
Q58
2 SSM3K15TE(F)
1
7
Q57
DTA144EE
6
DC SW
C510
R285
330k 0.1u
Q40
2SC4617(S)
RF AMP
W:4.4V
K
N:1.3mV
W:4.3V
C492 R286
N:0.2mV
100u 10k C498
RF SW
47p
R367 C588
D20
DAN235E
R287
0 0.47u
27k
R368
10k C494
10u
R373
10k
W:1.2mV W:4.2mV
C590 K K2
R372
N:4.4V N:4.3V
0
0.47u
C621 0.1u R382
R333 100k 100k
R330 R384 100k R383
100k 100k
OP-AMP
IC32
NJM2732V
R328
0 R385 R388
100 0
C622
0.1u
RF AMP
Q30
1.6V
L119
C401
220n
0.047u
L120
8.2u
N
DETECTOR
D17
MA3J742
DETECTOR
D18
MA3J742
R293 18k
R300 10k
OP-AMP
IC20
NJM4558E-ZB
1 8
AoUT V+
2 7
A-IN BoUT
3 6 R394 R393
A+IN B-IN
4 5 0 10k
V- B+IN
R401 0
IC23
BH2220FVM
R296 47k 1 8 R317
R297 47k 2 7 R318
R298 47k 3 6 R319
4 5
DAC
R245
47k
K:5V
K2:4.9V 3.7V
C438
3.1V
0.047u
Q39
R219 R225 C422 2SC4617(R)
RF AMP
18 18 0.047u
O
RX UNIT (X55-3100-XX)
10
10
10