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SCHEMATIC DIAGRAM 2
:POSITIVE VOLTAGE LINE
R104
10K
CF201
1
3
FM
+B
LINE
2
IC101
LA1833MN TLM
FM/AM IF AMP,
DET/AM OSC,MIX/FM MPX
A
D
B
C
(2.1V)
(4.2V)
(5.7V)
2.5V
3.7V
5.2V
24
23
22
1
2
3
2.1V
5.2V
2.1V
(5.7V)
Z102
1
4
1
3
2
3
6
2
:FM SIGNAL LINE
R109
330
R106
R108
470K
470K
C105
(0V)
1000P
(0V)
3.8V
C104
(0V)
(0V)
3.8V
1000P
0.7V
0.7V
Q101
Q102
2SC2787LTA
2SC2787LTA
FM IF AMP
FM IF AMP
(1.4V)
(0.5V)
(2.1V)
(0.9V)
0V
2.5V
2.5V
1.4V
2.1V
2.1V
21
20
19
18
17
16
FM
0.12V
P P
4
5
6
7
8
9
2.1V
0V
4.4V
3.4V
5.2V
(5V)
(4.1V)
(5.7V)
A
B
:AM SIGNAL LINE
CF202
1
3
2
Q106
UN4111TA
POWER SUPPLY
(FM:ON)
(0V)
14.7V
14.8V
0V
(14.8V)
2.1V
1.9V
1.9V
15
14
13
10
11
12
0V
3.7V
4.5V
(1.1V)
(4.1V)
R139
R131
68
D
F
C E
B A
C
D
B
A
CN102B
7
6
5
4
3
2
1
C
To
CONNECTOR CIRCUIT (CN203)
on SCHEMATIC DIAGRAM 7
:AM OSC SIGNAL LINE
14.8V
C142
R142
50V1
1K
B
C141
R141
50V1
1K
A
3.3K
Q110
(2V)
2SC3311ARSTA
2.6V
SWITCHING
2V
7.3V
(0.6V)
7.3V
A
B
A
B
CN101B
7
6
5
4
3
2
1
C
To
CONNECTOR CIRCUIT (CN204)
on SCHEMATIC DIAGRAM 7
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