Kenwood NXR-800 Service Manual page 136

U
NXR-800
450-480MHz-->
13.8V
SCLK0
SDo0
8V #1
5V #2
<--19.2MHz
5V #1
8V #2
5V #1
LPF10
C462
18p
L413
C472
5V
0.01u 390n
A-15
1.63V
RF AMP
R503 R502 C482
Q416
10 0 0.01u 2SC4617(R)
1.2V
19.2MHz -->
19.2MHz -->
5V #3
LPF16
C638 C639 C889
47p 18p 0.1u
L612 L613
<--19.2MHz R629
330n 390n 100 C643
470p
5V
Q607
SSM3K15TE(F)
Q608
SSM3K15TE(F)
Q609
SSM3K15TE(F)
Q607-609
DC SW
8V #1
DC SW
Q426
8V
SSM3J01F
8V #1ʼʼ
S-11 R582
DC SW 470k
Q428
SSM3K15TE(F)
INT VCXO:0V
INT VCXO:0V
OCXO or EXT Ref:
R533
OCXO or
G1:1.89V
EXT Ref:
G2:1.86V 100k
G1:1.89V
S:0.94V
C516
G2:1.7V
D:7.89V
S:0.82V
0.1u RF AMP
<--10MHz
D:7.7V
Q420 Q431
3SK317-E C506 3SK317-E
RF AMP
0.1u
A-24
A-23
8V #1ʼʼ
<--10MHz
10MHz--->
124
X56-312 (A/3) 5/6
V
SCHEMATIC DIAGRAM
L416
10u
LPF9
C430 C427
18p 47p
C458
L407 L405
A-14 C437
5V
1.61V
47p
0.01u 390n 330n
L410
C455
Q412
2SC4617(R)
330n 0.01u
RF AMP
1.51V
C657
0.01u
BUFFER AMP
C658
<--19.2MHz
IC602
0.1u
NJU6368PF1
1 6
FoUT VSS
2 5 R630 C656 R638 C659
VDD XT
3 4 C645 0.01u
1k 4.7k 0.01u
XT CoNT
470p
R406 10
oX_SCLK2
R407 10
oX_SDo2
R408 10
VCXO_DA_EN
RF SW LPF19
D404 C514
JDP4P02U
120p
L421
<--10MHz C521
0.1u 560n
C523 R538
0.1u 1k
C531 R555
0.1u 1k
RF SW
D405
JDP4P02U
C601
3 4
0.1u
2 5
1 6
Q423
SSM6L05FU-F
DC SW
<--10MHz
W
5V #2
<--19.2MHz
5V #1
1.57V
C420 R434 R417 C414 A-12
0.01u 0 0 0.01u
1.14V
1.57V
R418 C415 A-13
0 0.01u
1.14V
IC603
3.3V XC6204B332M
3.3V 5
VOUT
OSC-5
4
4 1 NC
V-7
3 2
VOLTAGE
REGULATOR
X601
L77-3034-05
8V #1
7.9V
A-25
4.26V
C511
Q419
2SC4617(R)
3.65V
47p
RF AMP
L420
C505
680n 0.1u
7.94V
2.08V
C501
0.1u
D406
RF SW
1.46V
HSC119
C541 10p
C542 10p
D407
RF SW
HSC119
3 4
2 5
D605,606
1 6
LIMITTER
Q421
SSM6L05FU-F
DC SW
OCXO
X
8V #2
VOLTAGE
REGULATOR
IC704
NJM78M08DL1AZB
V-4
3
8V
oUT
2
VOLTAGE
REGULATOR
IC706
5V NJM78M05DL1AZB
V-5
3
5V #2
oUT
2
C406
5V
0.01u
RF AMP
Q401
2SC4617(R)
C404
5V
0.01u
RF AMP
Q402
2SC4617(R)
VOLTAGE
REGULATOR
IC705
5V NJM78M05DL1AZB
V-6
5V #3
3
oUT
GND
2
1
VIN
2
VSS
3
CE
COMPARATOR
C484
IC405
TC75S59F-F
0.1u
3
IN+
C487
2
VSS
0.01u
R489 1
C492 IN-
2.7k
0.1u
R483 R480
DC SW
5.6k 6.8k
Q414
SSM3K15TE(F)
A-26 C486
COMPARATOR
Q418 0.1u DETECTOR
2SC4617(R) IC406
D401 TC75S59F-F
RF AMP
HSM88AS-E
R487 3
IN+
1k 2
VSS
1
IN-
R478
15k
DC SW
Q413
SSM3K15TE(F)
DC SW DC SW
Q424 Q429
SSM3K15TE(F) SSM3K15TE(F)
REF_SW2
R568 R578
OCXO_EXIST
220k 0
Y
TX UNIT (X56-3120-10) (A/3)
450-480MHz-->
13.8V
SCLK0
SDo0
8V #1
1
13.8V
IN
GND
1 8V #1
IN
GND
19.2MHz -->
19.2MHz -->
1 8V #1
IN
8V #1
4 R463
oUT
0
5
VDD
4
oUT
5
VDD
R452
0
<--10MHz
<--10MHz
10MHz--->