Tuner Circuit - Panasonic SA-AK66 Service Manual

SCHEMATIC DIAGRAM - 3

TUNER CIRCUIT

Z120 (RAL0029)
FM EXT
5.6P
ANT
75 1
1
2
GND
2
AM LOOP
ANT
3
4
100K
4
AM EXT
ANT
3
5
JK101
3
AM ANT COIL
2
1
Z101
9 8
RLA2Z007-T
R110
C107
1K
0.047
R114
5.6K
LA1833NMNTLM
C110
DET/AM OSC MIX/
0.01
R152
0
IC102
LC72131MDTRM
PLL FREQUENCY SYNTHESIZER
: +B SIGNAL LINE
: FM/AM SIGNAL LINE
2SC2786M
2SK544
FM MIXER
RF AMP
D
2.2P
1.2u
G
S
0.001
100K
220
390
2SC1675L1L2
BUFFER AMP
560K
LOCAL OSC
4.7P
2.2P
2.2P
C136
1000P
4
5
6
AM OSC COIL
7
R112 C108
100K 8P
IC101
FM/AM IF AMP
FM MPX
R111
390
C125
16V22
R113
C132
C130
10K
1000P
6.3V100
D101
C111
UDZSTE175R1B
50V4.7
R115
560
R116
C112
1K
0.01
C133
27P
20 19 18 17 16
IC102
1 2 3 4 5
C134
27P
R138
3.3K
R130
R136
10K
1K
R137 R135
1K
1K
: FM SIGNAL LINE
: FM OSC SIGNAL LINE
C103
CF201
RLFFETWND01M
0.47u
1 3
7
390
2
10P
C102 C101
0.001 R103
16V10 0.01
6
390
R121
22K
8
680K
10P
C139
50V4.7
R102
4.7K
24 22 21 20 19 18
23
IC101
1 2 3 4 5 6
7
C106
0.01
3
2
4
1
Z102
5 6
RLI2Z021M-T
15 14 13 12 11
R132
10K
6 7 8 9 10
R133
R126
1K
1K
R134
470
R117
47K
: AM SIGNAL LINE
: AM OSC SIGNAL LINE
Q106
KRA102MTA
POWER SUPPLY CONTROL
(FM : ON)
0V
R104
(0V)
1K
R107 <13.5V>
0.01
330
CF202
C104
R106
RLFFETWND01M
1000P
470K
1 3
R105
470
0V
(0V) 2
<11.5V>
Q101
0V
(0V)
0V
<0.7V>
(0V)
270
<0V>
Q101
2SC2058SPTA
C120
16V10 FM IF AMP
C138
R143
0.01
22K
C117
R146
0.01
100K
C142 R142
50V1
6.8K
C141 R141
50V1 6.8K
R145
100K
16
17 15 14 13
C143
6800P
8 9 10 11 12
R124
33 C122
50V1
R127
470
R122
2.7K
R131
68
C129 C149
6.3V100 0.1
R128
82
R125
470
13.6V
(13.6V)
<13.6V>
13.6V
(13.6V)
<0V>
1A
TUNGND
15V
TO
DO/ST
MAIN CIRCUIT
SD
(1B) ON
+7.5V
SCHEMATIC
MUTEA DIAGRAM-4
2A
RCH
CE
TO
LCH
MAIN CIRCUIT
PLLDA
(2B) ON
DO/ST SCHEMATIC
DIAGRAM-4
PLLCK