Kenwood RXD-V323 Service Manual page 15

A B
TUNER PCB
1
FE101
JK101
J101
8
2 7
C158
G
0.01
6
3
L101
22uH
T103
Q105
1 6
3 4
AM ANT COIL
4
5
+B
CAUTION: For continued safety, replace safety critical components only with man-
ufacturer's recommended parts (refer to parts list). indicates safety critical com-
ponents. For continued protection against risk of fire, replace only with same type
and rating fuse(s). To reduce the risk of electric shock, leakage-current or resis-
tance measurements shall be carried out (exposed parts are acceptably insulated
6
from the supply circuit) before the appliance is returned to the customer.
The DC voltage is an actual reading measured with a high impedance type volt-
meter as the AM/FM signal generator is specified to the conditions as shown in the
list below. The measurement value may vary depending on the measuring instru-
ments used or on the product. The value shown in ( ) is actual reading measured
in the AM mode.
MODULATION
MODE CARRIER
FREQUENCY DEVIATION
FM 98MHz 1kHz STEREO 67.5kHz 7.5kHz(Pilot)
7
AM 1000(999)kHz 400Hz MONO 30% MOD
C D
IF AMP
1.0V
Q101
R101 CF101
22 10.7MS
1
2
R102
L102
100
22uH
1/2W
5
+B +B
+
11.3V
3
5.1V(5.3V)
L107
C159
22uH
0.022
R137
1K
FM98MHz:4.2V
MW999KHz:4.4V
TP1
MW OSC COIL
0V
D105
T104
C162
470P
1 6
J104
3 4
5.1V
IC102 : LA1833L
SIGNAL LINE
IC103 : LC72131D
B LINE
Q101 : 2SC1675(L)
Q102 : 2SJ460
Q103,104 : 2SK2541
Q105 : 2SK544F-T
D101,102,104,
107,108 : 1SS133
D103 : MTZJ5.6B
D105 : SVC348S-TL
2SA733
2SA965Y
2SA934
2SA988
ANT INPUT 2SC1675
2SC1841
2SC2001
60dB
60dB
E F
+B
+
4.3V(5.1V)
R103
4
1K
+
3
CF102
R107
10.7MA 100
0.3V
2.1V 6
IC102
2.1V
(BOTTOM VIEW)
+B AM/FM/MPX
Q102 SYSTEM IC
+B
2.1V(2.3V)
R108
10K
2.1V
2.7V(3.5V)
R110
8.2K R123
3.3K
+
SFR101
20K
R124 C152
3.3K 0.022
4.3V(5.0V)
5.8V
R127 R126
10K 1K
+
+B
R128 C149
5.6K 0.22 +B
0.9V
C148
+
0.01
R130
220
FM98M:4.1V
MW999KHz:4.3V
+
C145
0.9V
27P
2.4V
5.1V
0V 0V 0V
C146
27P
2.3V
2SC2878A
2SD882
2SC945
G H
5.1V(5.3V)
+B
1 2 3
T102
R114
AM IFT
100
1/4W
6
C119
1u50
1
CF103
2 ST IND.ON:0V
CF104
+
10.7MG46-A
4 +
0V
5 2.6V(3.6V) 0V 2.8V(0V)
2.1V
ST:3.2V
1.8V
2.1V
2.9V(0.9V)
2.1V
C130 C131
0.01 0.01
0V(2.1V)
C135 R151
+ Q104 Q103
0.1 6.8K
C137 R122
0.047 39K
R121 C134
18K 10u50
+
+
2 TP2
1
R118
3.3K
C128
1500P
+B +B
11.8V
R150
10K
0V
(2.7V)
C153 R119
2.5V
1000P 1K
(0V)
1/4W
2.4V
IC103
PLL
FM:2.8V 0V
MW/SW:0V
ST:3.2V
MONO:0V
FM:0V
MW/SW:6.0V
2SA1175 DTA114ES
2SC2785 DTC114TS
DTC144ES
Y39-3240-23
I J
1.8V
+
MUTE
ON:4.6V
OFF:0V
R113 CN101
10K
10 MUTE
9 Lch
8 GND
7 Rch MAIN
-CN401
6 ST IND
3/4
A
+B 5 +12V
3 4 CE
4 3 DI
5 2 CLK
1 DO
RXD-V323 (1/4)
RXD-V323