Panasonic SA-VK725DGC Service Manual page 17

SCHEMATIC DIAGRAM - 13
MAIN CIRCUIT
C2119
50V4.7
R2118
1K
C2142
2700P
R2120
C2120
R2121
3.3K 50V4.7
22K
C2122 C2872
C2121
100P 100P 0.01
C3617
1 2 3 4 10V220
IC2811
C0AABA000009
DUAL OP AMP
8 7 6 5
C2241
C2222 C2221
2700P
100P
100P
R2220 C2220
R2221
3.3K
27K 50V4.7
C2873 C3618
0.01 10V220
B1ABEB000002
R2507
1K
R2508
56K
C2865 R2857
50V4.7 56K
R2856
56K
Q2823
B1GDCFGA0018
MUTING SWITCH
C2611
100P
R2048 R2049 R2564 R2881
0 0 100K 1K
12 11 10
JK2804 CN2802
SUBWOOFER TO
POWER CIRCUIT (CN5800) ON
SCHEMATIC DIAGRAM - 23
: +B SIGNAL LINE
: -B SIGNAL LINE
C2306
C2219
50V2.2
50V4.7
R2218 R2306
1K 1.8K
B1GFGCAA0001
Q2819
W2127
B1GFGCAA0001
0
MUTING SWITCH
C2502
R2219
16V10u
220K
4 3
R2506
270
5 2
R2842
3.3K
6 1
R2119
220K
R2921
3.3K
R2862
0
Q2820
MUTING SWITCH
C2864
R2855
R2310
50V22
56K
270
R2854
56K
C2310
50V1
Q2822
B1GDCFGA0018
MUTING SWITCH
9 8 7 6 5 4 3 2 1
: MAIN SIGNAL LINE
C2602
C2406
1
50V2.2
R2615
R2406
6.8K
1.8K
R2407
56K
Q2818
MUTING SWITCH
4 3
5 2
6 1
R2307
56K
R2848 W2128
1K 0
C2517
50V0.47
5
R2509 C2964
10K
100P
6
C2969 R2510
1000P 18K
7
8
C2968
1
W2130 R2226
0 0
R2227
0
R2410 C2515 R2624
50V10 0 R2228
270
0
C2410 R2511
C2606
R2095
50V1 1K 50V10
0
C2332
C2231
50V1
R2090
0
12 11 10 9 8 7 6 5 4 3 2
CN2801
TO
POWER CIRCUIT (CN5801) ON
SCHEMATIC DIAGRAM - 23
17
Q2815 Q2816
R2852
R2620
56K 56K
R2616 R2618 C2860
R2619
56K
1K 56K 50V4.7
Q2825
B1ABEB000002
Q2815, Q2816
SWITCH
B1GDCFGA0018
MUTING SWITCH
4
C2603
C2875
C
50V3.3
1
3
R2622
C2605
SUB
3.9K
100P
2
R2623 C2604
1000P
18K
1
IC2815
KIA4558FEL
DUAL OP AMP
R2126
0
R2127
0
R2128
0
C2335
1 1
C2131
50V1
R2865
0
1
SA-VK725DGC
C2862
50V4.7