Kenwood NXR-700 Service Manual page 122

A
NXR-700
RX UNIT(X55-3092-72)
1
W:-87dBm
N:-87.5dBm
CN41 MONITOR_PORT
C635
0.75p
W:-117.5dBm
N:-118dBm
CN5
RX_SIGNAL
2
R453
0
3
4
5
6
7
120
X55-309 1/6
B
SCHEMATIC DIAGRAM
C636 C637 C638 C639 C640
1p 0.75p 1p 0.75p 1p
L5
C10
22n
1000p
C14
1000p
C15
0.1u
D1
HSC119
D1
SURGE
PROTECTION
C
C641 C642
0.75p 1p
LNA
8.67V
Q1
2SC5337(QR)
R8
0.96V
22
C55
0.22V
12p
C17 C26 C35 C47
C68
1000p 470p 470p 1000p
C18 C27 C36 C48
R30
0.1u 1000p 1000p 0.1u
OP-AMP
TA75S01F-F
R4
R19 3
68
IN(-)
VE 100k 2
VEE
CN40
R5
R20 1
IN(+)
0
100k
C66
C69
E3
F10-3080-04
L54
C157 C169 RF AMP
Q18
10n
27p
1000p
RD01MUS1-T113
C232
39p
C295
5V
1000p
1.58V
C237
RF AMP
1000p C273 R156
Q21
68
2SC4725 22p
0.95V
C291
0.047u
C303
0.047u
3V
C292
10u35
D
E1
F10-2379-04
C643 C644 C645 C646
0.75p 1p 0.75p 1p
L15
C647
22n
1000p
4
100p
680k 3
IC4
4
oUT
5
VCC
L31 L36 L39
0.1u
39n 39n 39n
1000p
C249
RF AMP
Q23
15p
2SC3356-A(R24)
L76 C285
47n
12p
1/2 DIVIDER
IC9
C520
UPB1509GV
1 8 0.01u
1.59V
VCC1 VCC2
C298 2 7 C329 C580
IN OUT
1000p 3 6 0.01u 0.01u
IN SW2
4 5
GND SW1
VOLTAGE
REGULATOR
IC10
TK11230CMCL-G
6 1
5V
VIN VCoNT
5 GND2 2
GND1
R403 4 VoUT 3 C332
NoISEPASS
0 0.1u
E
R54
0
MIX
A1
W02-1940-05
5 6
2 1
R50
18
R81
0
L92 R417
10n
0
5V
RF AMP
Q53
2SC4725
0.91V