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GND
AM EXT ANT JK101 FM EXT ANT 75 AM LOOP ANT 1 2 3 4
L102 RLQB1R0KTD-D
1 2
C110 0.01 1 4 3 2 5 R110 1K
R152 0 R114 5.6K
Z101 RLA2Z007-T 9
Z120 (RAL0029)
IC102 AM ANT COIL C107 0.047
2.7K
3
5.6P
8
IC101
100K
R112 100K
G
SCHEMATIC DIAGRAM - 3
MAIN/TUNER CIRCUIT
LC72131MDTRM
100K
C134 27P C112 0.01 7
C133 27P
FM/AM IF AMP DET/AM OSC MIX/ FM MPX
R130 10K
2.2P
R138 3.3K C108 8P
D
S
PLL FREQUENCY SYNTHESIZER 2SK544 RF AMP 0.001
LA1833NMNTLM
AM OSC COIL
C132 1000P D101 UDZSTE175R1B
X103 RSXC7M20S05T C136 1000P 4.7P
5
4
220
20
1
6
XIN
XOUT
CE C127 16V22 C109 3.3K C114 1000P 50V3.3 R118
C125 16V22
2.2P
CE
VSS
100K
19
2
R137 1K
PLLDA
560K
DI
AOUT
C126 10
180P 1.2u
18
3
R113 C130 10K 6.3V100 C111 50V4.7
R136 1K
PLLCK R116 1K R115 560 R111 390
17
4
CL
AIN
820K
: +B SIGNAL LINE : +B SIGNAL LINE
390 2SC1675L1L2 BUFFER AMP LOCAL OSC
R135 1K
DO/ST R119 4.7K 1 2
16
2.2P
5
DO
PD
3.3P 10P
2SC2786M FM MIXER
IC102
R134 470
1 24 FM IF IN OSC OUT
15
6
<2.6V> (2.61V) ((2.61V)) 2.62V <0.55V> (0.55V) ((0.77V)) 0.55V <0.02V> (0.02V) ((0.23V)) 0.02V <0.02V> (0.02V) ((4.75V)) 0.02V <5.15V> (5.16V) ((5.03V)) 5.16V <5.01V> (0.18V) ((5.19V)) 5.19V
AM
VDD
14
680K
0.001
Z102 5 RLI2Z021M-T
7
SWA
FMIN
R151 82
2 23 AM MIX OUT OSC
13
8 3 22 REG AFC AM RF IN
SWB
AMIN
390
390
0.47u
10P
12
9
STRQ
MONO
8
6
7
3
C113 1000P R129 27K
21 4 AM RF IN GND
C102 16V10
10
11
FM
IFIN
6
R117 47K C106 0.01 C124 100P
5
R133 1K 4
6
<4.66V> (4.98V) ((4.83V)) 4.83V <0.02V> (0.02V) ((4.43V)) 4.43V <0.05V> (12.3V) ((12.31V)) 12.25V
<2.59V> (2.6V) ((2.6V)) 2.6V <0V> (0V) ((0V)) 0V <5.64V> (1.84V) ((12.33V)) 12.26V <0.81V> (0.9V) ((0V)) 0V <0.81V> (0.9V) ((0V)) 0V <1.15V> (5.16V) ((5.16V)) 5.17V <2.58V> (0V) ((0V)) 0V <0V> (2.49V) ((2.59V)) 2.59V <0V> (0V) ((0V)) 0V <0V> (0V) ((0V)) 0V
C115 50V4.7 1
20 AGC 19
CF201
C101 0.01
IC101
SD
R132 10K C148 0.01 C147 1000P R124 33 X102 RLFDFT22DD
7
AM OUT ST
2
R120 47K C119 R143 22K
18 DET OUT 8 FM DET 17
3
680P R102 4.7K R121 22K R103 270 C139 50V4.7 R105 470 C116 0.033
PILOT IN 9 VCC 10 STRQ 11 MPX IN PILOT OUT
R126 1K
: FM SIGNAL LINE : FM OSC SIGNAL LINE
SD
C103 0.01
DO/ST
C104 R106 1000P 470K
R125 470 R127 470 R122 2.7K R131 68 C149 C129 6.3V100 0.1 R128 82 C121 50V0.47 C123 50V1
C131 150P
16 15 14 RCH FM/AM
0V (0V) <0.7V>
C138 0.01 R123 68K C137 3300P C118 0.01 C122 50V1
12 13 MONO LCH
C120 16V10 Q101 FM IF AMP
0V (0V) <11.5V>
R107 330
0V (0V) <0V>
R104 1K
1
Q101
2
<2.08V> (2.07V) ((2.09V)) 2.09V <6.1V> (6.42V) ((6.27V)) 6.28V <2.08V> (2.07V) ((2.07V)) 2.08V <2.06V> (2.06V) ((2.08V)) 2.07V <0V> (0V) ((0V)) 0V <5.15V> (5.14V) ((4.22V)) 5.12V <5.15V> (5.16V) ((5V)) 5.16V <3.97V> (5.15V) ((4.13V)) 4.12V <6.1V> (6.43V) ((6.17V)) 6.27V <0.02V> (0.02V) ((3.68V)) 3.68V <5.01V> (1.32V) ((5.19V)) 5.19V <3.66V> (4.55V) ((3.76V)) 3.72V
<4.68V> (5.01V) ((4.85V)) 4.85V <6.11V> (6.42V) ((6.27V)) 6.27V <2.42V> (2.06V) ((2.46V)) 2.46V <2.42V> (2.06V) ((2.46V)) 2.46V <0.16V> (0.75V) ((0.25V)) 0.25V <2.02V> (1.25V) ((2.02V)) 1.86V <2.39V> (1.56V) ((2.36V)) 2.36V <2.06V> (2.06V) ((2.07V)) 2.07V <2.07V> (2.07V) ((2.08V)) 2.08V <2V> (2.01V) ((2.02V)) 2.02V <1.7V> (1.75V) ((1.76V)) 1.76V <1.69V> (1.76V) ((1.78V)) 1.77V
CF202 3
C142 R142 50V1 6.8K
C117 R146 0.01 100K
C141 R141 50V1 6.8K R145 100K
2SC2058SPTA
: AM SIGNAL LINE : AM OSC SIGNAL LINE
: FM/AM SIGNAL LINE
Q106 KRA102MTA
POWER SUPPLY CONTROL (FM : ON)
C143 6800P
0V (0V) <13.5V>
C144 6800P
13.6V (13.6V) <0V>
13.6V (13.6V) <13.6V>
RCH
CE
LCH
TUNGND 15V DO/ST SD
PLLDA DO/ST PLLCK
+7.5V MUTEA
2A
1A
TO MAIN CIRCUIT (2B) ON SCHEMATIC DIAGRAM-4
TO MAIN CIRCUIT (1B) ON SCHEMATIC DIAGRAM-4