B) Main Circuit - Panasonic SA-VK725DGC Service Manual

SA-VK725DGC
3.2.

(B) Main Circuit

SCHEMATIC DIAGRAM - 10
MAIN CIRCUIT
JK2803
L
R2958
2.2
LINE OUT
L2810
J0JBC0000041
R
L2809
J0JBC0000041
L
R2959
2.2
AUX
R
L2807
J0JBC0000041
JK2802
L
C2846
100P
C2847
100P
R
COMPONENT
VIDEO OUT
L
C2848
100P
C2849
100P
R
5
3 C Y 4
S-VIDEO
OUT
2 G 1
JK2801
C2843
0.1
: +B SIGNAL LINE
Q2814
B1GDCFGA0018
MUTING SWITCH
C2965
0.22u
R2838
1K
C2970
0.22u
L2806 R2137
J0JBC0000041
100
C2110 50V47u
C2111
L2808 R2114
1000P
47K
J0JBC0000019
C2211
R2214
47K 1000P
C2210 50V47u
R2237
100
R2136 27K
C2236 R2236
1000P 5.6K
R2235
C2136
5.6K
1000P
R2135 27K
R2803
100K
L2811
R2816
J0JCC0000120
75
C2842
0.1
R2830
100K
L2812
R2822
J0JCC0000120
75
C3623
W3011
R2831
0.1
0 100K
L2813
R2828 R2823
J0JCC0000120 0 75
R2832
100K
L2814
R2824
J0JCC0000120 75
R2807
C2850
100K
100P
R2825
75
C2851
100P L2815
R2834
J0JCC0000120
100K
R2826
R2899
75
0
L2816
J0JCC0000120
: AUX SIGNAL LINE
: MAIN SIGNAL LINE
C2855
R2846
50V4.7
56K
D2909
R2839
B0ACCK000005
1K
3 2
W2126
Q2813
0
B1GFGCAA0001
MUTING SWITCH
4 5
CR
CB
Y
YOUT
CR
C2047 6.3V1000
CB C2046 6.3V1000
COUT Y C2974 6.3V1000
VOUT YOUT
C2975 6.3V1000
VOUT C2434 6.3V1000
C2039 0.01
COUT
14
: DVD VIDEO SIGNAL LINE
: VIDEO SIGNAL LINE
R2849
1K
R2111 R2096
2.7K
0
R2112
100K
1
R2212
6
100K
R2211
2.7K
B1GBCFJN0033
R2810
10K
R2820
2.2K
C2444
10V220
C2441
IC2006
0.01
C9ZB00000498
VIDEO BUFFER IC
C2437
1
CrIN
9 CbIN 8
10 GND2 GND1 7
C2758
0.1
11 CrOUT
6
CYIN
12 CbOUT MUTE 5
C2440
0.1
CYOUT
13 YIN 4
14 YOUT BIAS 3
2
15 VOUT CIN
16 COUT VCC2 1
C2759
C2443
0.01
0.01
MUTE_L
LINE_LOUT
LINE_ROUT
AUX_L
AUX_R
Q2838
SWITCH
C2436
1