Panasonic SA-PM30MD Service Manual page 52

SA-PM30MD
14.3. (M)Tuner Circuit
SCHEMATIC DIAGRAM-9
TUNER CIRCUIT
Z120 FM FRONT END(EVN17290GIY)
22P
JK101
FM EXT
1
ANT
1
75
2
2
3
L101
0.22uH
3
AM LOOP ANT
4
4
AM EXT
ANT
5
AM ANT COIL
2
1
R110
5.6K
R118 R119
4.7K 33K
C127
16V22
C129
6.3V100
C130
6.3V100
C132
1000P
D101
MTZJ5R1BTA
C133
15P
(2.6V)
<2.6V>
X103
C134
18P
R138
3.3K
R130
10K
: +B Line : AM Signal Line
: -B Line
: AM OSC Signal Line
2SK238
RF AMP 22
D
8P
15P
G
1P
S
330
33K
33K
2SK360
8P
FM OSC
8P 33P
3
4
R143
22K
5
C115
8 6 25V4.7
AM OSC COIL
9 8 7
Z101 RLA2Z006M-T
R112 C108
C107
100K
8.2P
0.047
24
23 22 21 20 19
IC101
LA1833MN-TLM
IC101
FM/AM IF AMP,
DET/AM OSC,
MIX/FM MPX
1 2 3 4 5 6
(2.1V)
<2.1V>
C126 C106
0.047 0.01
Z102 RLI2Z006M-T
3
2 4
C147
1000P
1
3
6
5
C148
0.01
C125 R111
25V22 390
R117
R113
68K
10K
C111
R114
25V4.7
5.6K
L103
C110 C113
0.47uH
R115
1000P R129
0.01 C112
R116
560
27K
0.01 1K
(1.2V)
(0.9V)
(0V)
<4.3V> <0.9V>
<0V>
20 19 18 15 13
17 16 14
IC102
LC72131MDTRM
IC102
PLL FREQUENCY
SYNTHESIZER
1 2 3 4 5 6 7 8
R137 R136 R135 R134
1K 1K 1K 470
A B C D
: FM Signal Line
: FM OSC Signal Line
2SC2620
Q101,Q102
2SC2787LTA
FM MIXER
4P
FM IF AMP
1
7
6
100
C101
0.01
150
15P
8
2SC2996
BUFFER AMP
2P
C120
25V10
C131
100P
C138
0.01
C139
16V4700P
C142 R142
50V1 1K
C141
C116 R102 R123
50V1
0.033 4.7K 68K
R145
100K
C143
6800P
18 17 16 15 14 13
7 8 9 10 11 12
R124
270
R127 C122
X102
470 50V1
R125
470
R126 R122
1.5K 2.7K
C149
0.1
R128
82
C124
100P R132
10K
12 11
G H
9 10
(14.7V)
<0V>
C
R133 1K
D
B
A
52
: FM/AM Signal Line
(0V)
Q101
<0V>
(0V) (0V)
<0.7V>
<0.7V>
(0V)
<3.4V>
C104 R106
Q102
CF201
1000P 470K
3
C105
R105
C103 R107 R108
1000P
470 330 470K
0.01
2
R109
R103 R104
330
100 10K
C102
16V10
CF202
3 1
2
C144
4700P
R141
1K
E F
Q106
(0V)
(14.6V)
<14.4V>
<14.5V>
G
(14.6V)
H <0V>
Q106
RVTDTA114EST
POWER SUPPLY
(FM:ON)
R131
68
CS603
7.5V
7
TO
SD
6
MAIN
NC
5
CIRCUIT
STEREO
4
(CP603) ON
VT
SCHEMATIC
3
15V
2
GND
1
F E
CS604
CL
7
TO
DO
6
MAIN
DI
5
CIRCUIT
LCH
4
(CP604) ON
CE
3
SCHEMATIC
RCH
2
NC
1
(0V)
<0V>
(0V)
<3.5V>