Panasonic SA-VK91DGCS Service Manual page 91

SCHEMATIC DIAGRAM - 11
MAIN CIRCUIT
+7.5V
14
LOAD_GND
13
CHANGE_SW R2978 0 CHANGE_SW
12
GND
11
UP/DOWN_F R2979 0
10
TO
UP/DOWN_R R2980 0 UP/DOWN_R
CD LOADING
9
BOTTOM R2981 0 BOTTOM_SW
CIRCUIT
8
POSITION R2982 0
(CN1) ON
7
SCHEMATIC
+5V R2843 220
6
DIAGRAM - 29
OPEN_SW
R2983 0
5
OP/CL_FWD R2984 0
4
OP/CL_REV R2985 0
3
ST_SW R2986 0
2
PLAY_SW R2987 0
1
CN2810
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: +B SIGNAL LINE
CD8V
KA_ROUT
KA_LOUT
UP/DOWN_F
KA_RIN C2218
KA_LIN C2120
POSITION
MIC
VREF+
OPEN_SW
OP/CL_FWD
OP/CL_REV
ST_SW
PLAY_SW
C2900
4700P
R2935 15K
R2938 3.9K
C2904 1000P
R2939
C2905
5.6K
1000P
C2902 1000P
C2936 50V2.2
R2941
C2937
R2942
10K
3300P 4.7K
C2907
R2943
1800P
10K
C2917 0.068
C2918 0.068
C2919 0.068
R2944 15K
C2921 16V47
C2922 C2923
16V100
R2945
R2969 R2952
68 68
+15V
: MIC SIGNAL LINE
: MAIN SIGNAL LINE
16V10
16V10
L2821
G0C100JA0030
80 79 78 77 76 75 74 73 72
1
2
3
4
C2899
5
50V2.2
6
7
C2901 8
560P
9
10
R2940
27K
11
12
IC2813
13
C1BB00000801
14
KARAOKE IC
15
C2912
0.047
16
17
18
19
C2920
20
0.047
21
22
23
24
0.1
0
25 26 27 28 29 30 31 32 33
R2946
12K
R2947
10
R2955
220
D5858
R2991
B0BC5R000009
0
91
SA-VK91DGCS / SA-VK91DGCP
71 70 69 68 67 66 65
C2121
50V1
64
63
C2219
62
50V1
61
60
59
58
57
R2948
0
56
55
C2935 C2934
0.1 16V100
54
53
52
C2933
50V1 C2932
51
4700P
50
49
C2931
1000P
48
47
C2930
0.068 C2929
46
0.1
45
44
C2928
43
C2927 0.1
0.068
42
41
C2926
4700P
34 35 36 37 38 39 40
C2925
1000P