Kenwood NX-320 Series Service Manual page 96

AO
NX-320
TX-RX UNIT (X57-8050-XX)
+B
R 1
*
*
R 2
D4 1 2 , 4 1 3
T/R SW
D4 1 3 C 1 0 2
4 7 0 p
HS C2 7 7
50T
R:0V
T:4.98V
RX:4.68V
TX:0V
R3 4 0
5 6 0 k
Q 3 0 3
2 S C 4 21 5- F( Y )
IF AMP
/T_R
APC
OSC
50T
R3 0 1
L 3 0 2
50R
33A
5 6 0n
5 6 0
5
R3 0 2 C301
0 . 0 1 u
1 k
2SC5108(Y)F
R:0.68V
T:0V
R 3 5 7
8 2 0
R3 0 5
1 0
C 31 4
0 . 1 u
C315
0. 1u
R3 1 0
1 0 k
X57-8050-XX
-10 K,K2,K3
-11 K4,K5,K6,E,E2,E3
96
X57-805 7/8
AP
SCHEMATIC DIAGRAM
R 474
0
R47 5
PRE DRIVE AMP
0
2 SC 4926Y D
Q 102
R 10 2 C 1 0 6 C107
*
*
0
Q110
S S M6L05 FU- F
PD SW
R:0V
T:3.30V
L 308
R 3 3 5
R:4.87V
T:0V
220
X F1 49.95MHz
C 35 3 R345
R346
2 7 0
0 . 0 1u 27 0
R:0.68V
T:0V
R:3.84V C 310 100p
T:0V
L 305
R308 C307 C313
R 30 6
0 10p 5 6 n
3 30 k 3 3 p
Q 30 1
TRIPLER
R:3.44V
IC 302 TK 1093 1VTL -G
T:0V
C F1
1
OSC-B
oU T
IN
RFin 2 4
2
OSC-E
GND 2 3
3
MIXout
COMPout
2 2
4
Vcc
2 1
COMPin
C322
5
AM-IFin
2 0
NOISEout
0 .1u
6
AM-DCPL
1 9
NOISEin
C 323
7
FM-IFin
AM-AGCin 1 8
0 . 1u
8
FM-DCPL1
AGCAMPout
1 7
C 3 1 6
9
FM-DCPL2
RF-AGCout 1 6
C327
0. 1u
10
LIMout
RSSIout 1 5
10 p
11
QUADin
AMSW 1 4
12
FM-DETout
1 3
AM-DETout
FM SYSTEM
L102 L104 L204 L205 L206 R1 R2 R111 R170 R205 R208 C106
8.2n 18n 15n 15n 18n 0 NO 2.7k
12n NO 18n 18n 22n NO 0 2.2k
AQ
R D 01M U S 1-T 113
R:0V
T:0.81V
C1 13 R 115 C 1 14
*
*
1 2
R:0V
T:3.85V
R:0V
T:4.88V
R 14 4
2 7k
R 204
C36 0
4.7k
0.01u
BPF
L203
2 70n
C319
0.01u
R 203
680
C3 38
0.01u
R3 26
10 0k
C3 39
0.1 u
C340 0.1u
R 327 10 k
R328
4.7k
C341 0.1 u
RSSI
R329 22 k
C N 301
R330
18 k
C 343 0 .47 u
C107 C113 C114 C115 C118 C124 C212 C214 C217 C219 C220
NO 270 180k 22p 15p 6p 10p 3p
NO
0 220 150k 15p 12p 12p 22p
AR
DRIVE AMP
C 1 20
Q 103
R 170
10 0p
*
L 1 0 4
*
R:0V
T:2.29V
APC SW
Q 105
2SC5383-T111 R 147 R 148
1 k
560
APC PROTECT
L 2 0 4 * L2 05
*
C211 C 213
2 p 2 p
R:3.33V
R:4.54V
T:0V
T:0V
MIXER
C 2 16
Q 201
3S K 318
4 7 0 p
R:1.52V
T:0V
R:2.90V
T:0V
DC AMP (RSSI/ASQL)
I C 304
T C 75 W51 F K (F )
5 IN +B
V S S 4
R 352
6 IN - B
IN +A 3
10k
7 oU T B
IN-A 2
8 V D D
oU T A 1
C 354
0.01u
R 344
6.8k
R:1.99V
T:0V
NO 18p 10p 7p 3p 1p 10p
12p 27p 12p 8p 4p 3.5p 18p
AS
+B
R 1 26
0
*
R:0V
T:1.78V
R 14 9
1k
APC SW
50T
APC
50R
5