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SCHEMATIC DIAGRAM-3

:FM SIGNAL LINE :AM SIGNAL LINE
MAIN(TUNER) CIRCUIT :POSITIVE VOLTAGE LINE :FM OSC SIGNAL LINE :AM OSC SIGNAL LINE


TUNER PACK CIRCUIT
Z120 FM FRONT END (RAL0029) Q2
Q1A 2SC2786MTA L2
C3 FM MIXER
2SK544F-AC 2.2P
0.47 H
RF AMP 7
C1A




SVC211SPA-AL




390
D




R6
5.6P




1.2 H
G




5.6P

3.3P
L11




L1
JK101




D2A
FM ANT SVC211SPA-AL S




100K




560K
R2
1




R5




1000P
C5

C6
180P




C11
L12


D1A




C4
75




1000P
C2A
R3 R103
220 270
GND 2 6




16V10
C102
C101
3




0.01
100K
R1A




390
R9
R4 R8




R10
390
4 100K 680K R11 C10
5 680K 18P
C7
4.7P
2.7K
R7




C8
SVC211SPA-AL
3.3P


2.2P

L10
C9 Q3
D3



2SC2787FL1TA Q4
LOCAL OSC 2SC2787FL1TA
BUFFER AMP
8


L102
0.39 H


AM ANT A
EXT Z101

B
LOOP

C
0.39 H
L101




AM ANT AM OSC
R110
1K
0.047
C107




C108
100K
R112




8P




D R111
390
1000P
C136




A
16V22
C125




R128
82
B
6.3V100
UDZSTE175R1B




1000P
C132



C130
R113
10K




R114
1000P
D101




R151




R117
C113




5.6K
47K
82
560 25V4.7




R129
R115 C111
C110
0.01




R152 27K
0 C
C134




C133
27P




27P




X103 C112 R116 C124
(7.2MHz) 0.01 1K 100P
D
2.6V 1.3V 0.9V 0.9V 5.2V 0V 2.5V 0V 0V
2.6V 3V 0.9V 0.9V 5.2V 2.5V 0V 0V 0V
20 19 18 17 16 15 14 13 12 11
VDD
A IN




IF IN
X OUT




A OUT




PD




FM IN


AM IN
Vss




MONO




IC102
LC72131MDTRM
PLL FREQUENCY
STRQ




SYNTHESIZER
X IN




SDC
CE




CL


DO


AM


LW




FM
DI




1 2 3 4 5 6 7 8 9 10
2.6V 0.6V 0V 0V 5.2V 4.7V 4.3V 0V 0.1V
2.6V 0.6V 0V 0V 5.2V 0.2V 4.6V 0V 14.7V
E

R130 R132
10K 10K

R138 R133
3.3K 1K
F
R137


R136


R135


R134
470
1K


1K


1K




A B C D
SCHEMATIC DIAGRAM-4


:POSITIVE VOLTAGE LINE :FM SIGNAL LINE :AM SIGNAL LINE :AM OSC SIGNAL LINE



R104 R107
1K 330



C103
0.01
R106 CF202
470K 1 3

0V
CF201 C104 0V 10.3V
1 3 1000P
0.7V Q106
2 KRA102MTA
POWER SUPPLY
R105
470




Q101 (FM:ON)
2SC2058SPTA FM +B LINE
2 FM IF AMP 0V 14.8V
14.7V 14.8V
14.8V
14.5V




16V10
C120
R143
22K




C138
0.01
14.7V
2.8V
0.033
C116




R121
22K
IC101
4.7K 25V4.7


LA1833NMNTLM
680P



R102 C139




R123
68K
FM/AM IF AMP,
DET/AM OSC,MIX/FM MPX
C119




A
C142 R142
25V4.7




D 50V1 6.8K
47K
50V3.3



1000P




A
C114



C109




3300P
R118
3.3K




4700P
C144
150P




C118
0.01




R146
100K
R120
C115




C141 R141
B 50V1 6.8K
C137
C131




C B




4700P
C143
C117
0.01




R145
100K
4.7V 6.1V 2.1V 2.1V 0.7V 1.2V 2.4V 2.1V 2.1V 2V 1.8V 1.8V
4.4V 5.9V 2.4V 2.4V 0.3V 0V 2.4V 2.1V 2.1V 2V 1.8V 1.8V
24 23 22 21 20 19 18 17 16 15 14 13
OSC


AFC


AM RF IN


AGC


AM OUT




PILOT IN
OSC OUT




MPX IN
DET OUT




PILOT OUT


Rch


Lch
AM MIX OUT
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 5.8V 2.1V 2.1V 5.3V 5.2V 3.6V 5.8V 0V 4.7V 3.4V
2.1V 6.1V 2.1V 2.1V 5.3V 5.2V 4.7V 6.1V 0V 1.2V 4.3V
R124
C126
16V22




33
C127




C122
1




50V1
R119
4.7K




C106
0.01




50V0.47
C121
X102




R127
470




Z102
C123
50V1
R122
2.7K




1 4 1 3
2
3 6
2
R131
68
7.3V
7.7V
6.3V100




C149
C129




14.5V
14.8V
0.1




D F C E B A



R125
470

R126
1K
A
1000P
C147
C148




A
0.01




B B
C
D

A
1 2 3 4 5 6 7 8 9 10 11
+B(4)
+B(3)
DO
CL
DI
CE
SD
STEYE



Rch OUT
Lch OUT
GND




TO
MAIN(CONTROL)CIRCUIT( B )
ON SCHEMATIC DIAGRAM-17