Kenwood NX-420 K Service Manual page 75

AT
TX-RX UNIT (X57-8370-10)
.
L102
THP
DRIVE
Q104
RD01MUS1-T113
H:1.47V
L:1.38V
H:7.34V
L:7.42V
L191
R120
1.2n
0
.
R130
1k
OVER VOLT PROTECT
50T
+B
APC
50R
C224
L215
12n
8p
CF301
L72-1040-05
C329
R318
IN
1k
0.1u
Note : The components marked with a dot (
AU
SCHEMATIC DIAGRAM
FINAL
H:7.31V
Q106
L:7.41V
RD07MUS2BT122
H:1.25V
L:1.16V
C138
R129
0
82p
. DC SW (APC)
Q105
FK330301
LNA
Q200
BB505CES-TL-E
R210 R:1.46V
R:3.24V
T:0V
2.2 T:0V
C232
R:4.83V
T:0V
100p
R:0.37V
T:0V
C318
R310 R303
oUT
0
0
0.1u
GND
•
) are parts of layer 1.
AV
C171 L115
39n
100p
D102,D103
D102
ANT SW
HVC131
R152 C169
D103
HVC131
0 100p
R:0V
T:1.63V
.
IC100
NJM12904RB1
1
AoUT
2
A-IN
.
3
A+IN
R138
4
GND
150k
.
APC CONT
R139
150k
.
DC SW (APC)
Q107
LTC014EEBFS8
L217
L79-1928-05
C234
C236
L219
OUT IN
1.6n
2p 10p
C219
L211
R202
7.5n
12 100p
AW
NX-420
L118
R:0V
L79-1468-05
T:0.83V
C183
C175 C177
L119
100p 100p 15p
C181 C192
L117
7.5n
100p 100p
D104,D105
ANT SW
.
R146
.
BIAS CONT
4.7k Q108
FJ330301
8
V+
.
7
BoUT
R153
6
100k
B-IN
5
B+IN
.
.
DC SW (APC)
R150
Q109
FK330301
.
0
R158
0
APC
C237
C238 L218
5.1n
100p 100p
LIMITTER
D200
HSB88AS-E
L212
L79-1928-05
C222
OUT IN
100p
AX
1
C185
ANT
15p
2
3
4
5
6
7
75
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