Kenwood NX-700 Service Manual page 83

P
TX-RX UNIT (X57-738X-XX) (A/2)
BUFFER AMP
(RF)
1.12V
Q14
2SC5636
C94
TX
15p
0.96V
50C
50R
4.34V
C240 R247
RX
0.01u 100k
C246
0.01u
Q205
2SC3356(R23)
0.74V
1st
IF AMP
R209
50R
10
2
1
Q
SCHEMATIC DIAGRAM
R : 2.15V
T : 4.23V
C98 R77
10p 0
4.79V
T/R
SW
R : 2.82V
T : 0V
L36
R264
4.7k
4.60V
0.87V
C269
R343 C359
10p
Q208
0 470p
2SC5636
2.03V
BUFFER AMP
(LOCAL)
XF202
58.05MHz
R250 R320 R256 R257
oUT IN
3 6
0 0 180 0
4.95V
1.39V
1.39V
C231
0.1u
oUT
BUFFER AMP
(2nd IF DET)
R
NX-700/700H
T/R R : 0V
SW T : 4.94V
D101
C102 R103 C104 R107
1000p 18 470p 180
HVC131
2SC5108(Y)F
1.22V
80T
L213 L215
R279
47n 47n
47
L210
R263
47
4.33V
L209
L39-1498-05
R321 R261 C259
0 0 0.01u
CF203
450kHz
R231 C334
IN
2.2k 0.1u
2
1
S
RF
PRE-DRIVE AMP
C105 C109
470p 33p
RF DRIVE AMP
Q101
Q102
2SC5455-A
1.99V
0.94V 7.70V
1.76V
C283
470p
C267
470p
IC204
SPM5001
L214
1 6
G1 G2
L39-1498-05
C279
2 5
D1 S1
3 4
1000p
D2 S2
0.93V
1st
MIXER
33A_2
IC203
TC75W51FK(F)
R239
5 4
VSS
10k
6 3
2
7
8 1
VDD
3.29V
BUFFER AMP
(RSSI/VAGC)
X57-738 (A/2) 4/16
T
C118
56p
TX
7.88V
R276
RX
33
2
1
83