B) Main (Tuner) Circuit - Panasonic SA-VK82DGCP Service Manual

22.3. (B) Main (Tuner) Circuit

SCHEMATIC DIAGRAM - 9
MAIN (TUNER) CIRCUIT
TUNER PACK CIRCUIT
5.6P
FM EXT
ANT
1
1
UNBALANCED
75 OHM
2
2
GND
3
3
AM LOOP ANT
AM EXT 4
4
ANT
JK2601
5
L2601
G2A411C00001
R3610
C3607
1K
0.047
R3614
5.6K
C2633
27P
C3610
0.01
R2652
0
C2634
27P
: +B SIGNAL LINE
: FM/AM SIGNAL LINE
2.2P
2SK544 2SC2786M
1.2U
1000P
100K
100K
180P
390
220
100K
560K
2SC1675l1l2
4.7P
2.2P
2.2P
2SC2787FL1TA
D2602
C2636
B0CDBB000015
1000P
6 1
2
4 3
L2602
R3619
G2BPC0000016
3.3K
R3612
C3608
100K 8P
R3611
390
C2625
16V22
C3611
50V4.7
R3616
C2612
1K
0.01
20 19 18 15 14
17 16
IC2602
LC72131MDTRM
PLL FREQUENCY SYNTHESIZER
1 2 3 4 5 7
6
R2638
3.3K
R2630
10K
: FM SIGNAL LINE
: FM OSC SIGNAL LINE
C3603
0.01
CF2601
J0B1075AA014
0.47U
1 3
7
C3604 R3606
470K
1000P
390
2
R3605
470
1000P
6
390
C2601 C3602
0.01 16V10
5.6P
680K
8
C2619
680P
R3620
47K
C3609
C2614
1000P
50V3.3
IC2601
LA1833NMNTLM
FM/AM IF AMP
DET/AM OSC MIX/FM MPX
24 23 22 21 20
R3618
3.3K
1 2 3 4
C2647
1000P
C3606
C2627
C2626
0.01
16V22
1 C2648
3 R2626
2 4
1
5 6
Z2602
G2BAD0000003
R2628
C2629
82
6.3V100
R3617
47K
R2629 27K
C2624
100P
13 12 11
R2632
10K
R2633
1K
8 9 10
89
SA-VK82DGCP / SA-VK82DGCS / SA-VK82DGS
: AM SIGNAL LINE
: AM OSC SIGNAL LINE
Q2606
R3604
1K
R3607
330
CF2602
J0B1075AA014
3 1
R3601
0
Q2606
2
B1GCCFJJ0016
Q2601
TUNER 15V
Q2601
SUPPLY SWITCH
B1AABC000003
FM IF AMP
R2621
R3603
270
C2620
22K
16V10
C2638
0.01
R2643
22K
R2646
C2617 5.6K
0.01
R2642
6.8K
C2642
R2641
50V1
6.8K
C2641
50V1
R2645
5.6K
19 18 17 16 15 14 13
IC2601
5 6 7 8 9 10 11 12
C2621
50V0.47
0.01
C2623
50V1
1K
R2644
R2631
120
C2649
0.1
W2919
0
C2644
6800P
C2643
6800P
120
TUNR
A
CE_T
B
TUL
C
TO
PLLDA
D
MAIN
DO/ST
CIRCUIT
E
PLLCK
(1B) ON
F
SCHEMATIC
TGND
G
DIAGRAM - 15
15V
H
TU_SD
I
+7.5V_T
J
1A