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NOTE:
SCHEMATIC DIAGRAM 1 The number which noted at the connectors on the schematic diagram as
"SCHEMATIC DIAGRAM 1" or "SCHEMATIC DIAGRAM 2"
indicates fhe schematic diagram serial number located on the left corner in the schematic diagram.
A TUNER CIRCUIT For [E] area. :POSITIVE VOLTAGE LINE
:FM OSC SIGNAL LINE
:AM OSC SIGNAL LINE
:FM SIGNAL LINE
:AM SIGNAL LINE
Z120 FM FRONT END (RAL0035)
2SK238 2SC2620
FM MIXER
RF AMP
22 4P 7
10K
8P
H
22P
7P
4P
1P
1
100K
JK101
8P
22P
FM ANT
220P
1.5M
1P
1
(75 )
33K
33K
15P
H
0.47
0.022
33K
2 100
100K
R103
18P
3 100
6
4
16V100
2SK360
0.022
330 150
0.022
16V100
220
5
C101
C102
0.01
FM OSC
10K
330
0.022 8P 2SC2996
470K
BUFFER AMP
2.7K 15P
100K
3P
8P 33P 2P
47P
1.2K
10K
18P
2SC2996
BUFFER AMP
AM ANT 8
EXT L102
0.68 H
LOOP A
Z101
0.68 H
6 1 A 6 1
L101
B
5 2 Ca 5 2
C
4 3 4 3
A
AM ANT AM OSC
R110
1K
L103
0.047
C107
C108
8.2P
100K
R112
0.47 H
D
1000P
C136
R111
390
A
16V22
C125
R128
82
B
6.3V100
1000P
1000P
C132
MA4051MTA
C113
C130
R113
10K
R114
D101
R117
5.6K
68K
560 25V4.7
R129
R115 C111
C110
0.01
27K
C
C134
C133
27P
27P
X103 C112 R116 C124
(7.2MHz) 0.01 1K 100P
D
(3.8V) (0V) (2.5V) (0V)
2.6V 2.9V 0.9V 0.9V 5.2V 2.5V 0V 4.1V 0V
20 19 18 17 16 15 14 13 12 11
FM/AM
VDD
X OUT
Vss
A OUT
A IN
PD
FM IN
AM IN
MONO
IF IN
1.9V
P-P
IC102
F=7.2MHz LC72131MDTLM
PLL FREQUENCY
STRQ
FM/AM SYNTHESIZER
X IN
SDC
CE
CL
DO
AM
LW
FM
DI
2.1V
P-P
1 2 3 4 5 6 7 8 9 10
F=7.2MHz 2.6V 0V 0V 0V 1.2V 3.7V 3.7V 0V 0V
(0V) (4.2V) (14.8V)
E
R138
3.3K R132
R133 10K
R130 1K
10K F
R137
R136
R135
R134
470
1K
1K
1K
A B C D
V V
[ FM ] [ AM ]
8.1V 4.6V
1.6V 0.9V
F F
87.5MHz 108MHz 522kHz 1629kHz
SCHEMATIC DIAGRAM 2
:POSITIVE VOLTAGE LINE :FM SIGNAL LINE :AM SIGNAL LINE :AM OSC SIGNAL LINE
R104 R109
10K 330
R107
C103
0.01
330
R106 R108 CF202
470K 470K 1 3
C105
(0V) 1000P
12V (0V)
CF201 C104 (0V) (0V)
1000P 12V
1 3 0.7V 0.7V 2
Q106
UN4111TA
R105
470
FM +B LINE Q101 Q102 POWER SUPPLY
(FM:ON)
2
2SC2787LTA 2SC2787LTA
FM IF AMP FM IF AMP (0V)
14.7V 14.8V
14.8V
10K
10K
0V
16V10
C120
(14.8V)
R143
22K
C138
0.01
0.033
C116
R121
22K
IC101
390P
LA1833MN TLM
4.7K 4700P
R102 C139
R123
68K
FM/AM IF AMP,
C119
DET/AM OSC,MIX/FM MPX
A
C142 R142
25V4.7
D 50V1 1K
50V3.3
1000P
C114
C109
47K
B
R118
4700P
3.3K
4700P
C144
0.018
100P
C118
R146
100K
C115
R120
C141 R141
B 50V1 1K
C137
C131
C A
4700P
C143
0.018
C117
R145
100K
(4.2V) (5.7V) (2.1V) (0.3V)
3.7V 5.2V 2.2V 2.2V 1.7V 0V 3.2V 2.1V 2.1V 2.1V 1.9V 1.9V
24 23 22 21 20 19 18 17 16 15 14 13
OSC OUT
OSC
AFC
AM RF IN
AGC
AM OUT
DET OUT
PILOT IN
MPX IN
PILOT OUT
Rch
Lch
FM
AM MIX OUT
0.12V
P P
FM IF IN
AM IF IN
FM DET
FM/AM
MONO
STRQ
REG
GND
Vcc
SD
ST
1 2 3 4 5 6 7 8 9 10 11 12
2.1V 5.2V 2.1V 2.1V 0V 0V 3.4V 5.2V 0V 3.7V 3.9V
(5.7V) (4.7V) (4.1V) (5.7V) (1.1V) (3.5V)
R124
270
0.047
C126
16V22
C127
C122
50V1
R119
10K
C106
0.01
50V0.47
C121
X102
R139
R127
470
3.3K
Z102
C123
50V1
R122
2.7K
(1.9V) Q110
1 4 1 3 3V 2SC3311ARSTA
1000P
2 SWITCHING
C147
C148
0.01
3 6
R125
R126
1.5K
470
1.6V 7.3V
2 (1V)
R131
68
7.3V
6.3V100