Kenwood NXR-700 Service Manual page 116

K
NXR-700
13.8V
8V #1ʼ
T:7.8V
R:0V
C221 R224 R226
1000p 1k 0
RF DRIVER AMP
Q203
RD01MUS1-T113
A-1
VS1
CN203
L205
T:1.4V
56n
K
R:0V
T:1.5V
T:7.8V
K2
R:0V K
R:0V
R223 C224
T:7.9V
K2
R:0V
12k 0.047u
C220
0.1u R225
470k
CN202
D_PC
R887 1k
R888 1k
R889 1k
5V #1
5V
VOLTAGE
REFERENCE
IC801 AD1582 2.5V
3 1
VIN VoUT
GND
2
CVT-REF
CVT-MOD
D_oN
8 9
VSS QS
R719 100k 7 10
Q4 QʼS
R720 100k 6 11
Q3 Q8
R872 100k 5 12
Q2 Q7
4 13
Q1 Q1 Q6
R718 3 14
CLK Q5
10 R717 2 15
DATA OE
10 R716 1 16
STRB VDD
10
R715
IC703
BU4094BCFV
470k
SHIFT-REGISTER
5V #2
<--19.2MHz
8V #2
DAC
IC701
BH2220FVM
1 8 1
AO1 LD
2 7 2
AO2 CLK
3 6 3
AO3 DI
4 5 4
5V
Vcc GND
R709
470k
104
X56-311 (A/3) 3/6
L
SCHEMATIC DIAGRAM
K:146-174MHz-->
K2:136-154MHz-->
8V #1
VOLTAGE
REGULATOR
8V NJM7808FA-ZB
L208
C230
IN
68n 12p
T:0.3V
K
R:0V
T:136M:25.8mV
144.9M:33.3V
K2
145.1M:33.2V
154M:36.4mV
DETECTOR
R:0V
D201
HSM88AS-E
APC AMP
TRG
IC201
CN811
NJM2904E-ZB
5 4
B+IN GND
6 3
B-IN A+IN
7 2
BoUT A-IN
8 1
V- AoUT
R229
56k
8AD_EN
SDo1
SCLK1
1 20
L801
SCLK AGND4
1u
2 19
DIN VDRIVE CoNT_5.0V
3 18 R891
CS DoUT SDI1
4 17 1k
AGND1 AGND3
5 16
AVDD1 VIN0 CVT
6 15
AVDD2 VIN1 PA_CURR
7 14
REFIN VIN2 FAN_CURR
8 13
AGND2 VIN3 FWD_PWR
9 12
VIN7 VIN4 RFL_PWR
10 11
TEMPERATURE
VIN6 VIN5
SENSOR
IC804
IC803
LM50BIM3/NOPB
AD7908BRU
2 1
ADC
Vo +VS
GND
3
FAN_CONT2
FAN_CONT
TEMP_RST
R721
SR_OE
10
5V
C710
0.1u
EEPROM
IC702
S24CS02AFJTBG
5V
8
A0 VCC
7 R711 100k
A1 WP
6 R712 4.7k
A2 SCL
5 R713 4.7k
GND SDA
DC SW
Q701
SSM3K15TE(F)
M
V-1
IC808 3-STATE BUFFER
IC805
TC7SET126FU-F
OUT
4
GND
oUTY GND
INA
5
VCC
DC SW
S-1
Q205
L812 3-STATE BUFFER
SSM3J01F
IC806
10u
TC7SET126FU-F
4
oUTY GND
R235 INA
DC SW 5
470k VCC
Q204
SSM3K15TE(F)
VOLTAGE
REGULATOR
V-3
PLL
IC807
INDICATOR
5V NJM78M05DL1AZB
3
DC SW
oUT
Q206
GND
SSM3K15TE(F)
2
5V #1
R804 10
2DA_EN
DAC
IC802
AD5312BRM
10 1
GND LDAC
R805 10 9 2
SDo1 DIN VDD
R806 10 8 3
SCLK1 SCLK VREFB
R807 10 7 4
2DA_CE SYNC VREFA
6 5
PWR_PRT VoUTB VoUTA
PWR_CONT
WP
N
3
2
1
G
3
2
1
G
BUFFER AMP
NJU6368PF1
6
VSS
C510 5
XT
0.1u C502 4
CoNT
8V #1
1
0.1u
IN
REF_CV
K:2.5V
CN401
K2:2.9V
LMC7101BIM5
R401 1
5V
OUTPUT
0 2
V+
R801 C401 3
INPUT+
0.01u
1k
C405
470p
INT VCXO:5V
OCXO or EXT Ref:0V
RF SW
D602
JDP4P02U
R610
100k
S-11
DC SW DC SW
Q601 Q602
SSM3J01F SSM3K15TE(F)
C610
INT VCXO:0V
0.1u
5V #2 OCXO or EXT Ref:5V
<--19.2MHz
8V #2
R508
0
R871
100k
RF SW
D601
JDP4P02U
R509 C490
0 0.1u
<--10MHz
O
TX UNIT (X56-3110-XX) (A/3)
K:146-174MHz-->
K2:136-154MHz-->
13.8V
SCLK0
SDo0
8V #1
5V #2
<--19.2MHz
5V #1
8V #2
IC407
1 R506
FoUT
2 100
VDD
3
XT
OP-AMP
IC401
5
V-
4
INPUT-
5V #3
<--5.99MHz
C497
0.1u
R518
100k
D402
HSM88AS-E
DETECTOR
REF_LV
CN402
C485
0.1u
LPF17
C498 C503
120p 47p
L418 L419
560n 680n