Panasonic SA-VK81DEE Service Manual page 89

SCHEMATIC DIAGRAM - 11
MAIN CIRCUIT
+7.5V
14
LOAD_GND
13
R2978
CHANGE_SW
12
GND
11
UP/DOWN_F R2979
10
TO
UP/DOWN_R R2980
CD LOADING 9
BOTTOM R2981
CIRCUIT
8
POSITION R2982
(CN1) ON
7
SCHEMATIC +5V R2843
6
DIAGRAM - 29
OPEN_SW R2983
5
OP/CL_FWD R2984
4
OP/CL_REV R2985
3
ST_SW
R2986
2
PLAY_SW R2987
1
CN2810
: +B SIGNAL LINE
CD8V
0
CHANGE_SW
KA_ROUT
KA_LOUT
0 UP/DOWN_F
KA_RIN
0 UP/DOWN_R
KA_LIN
0 BOTTOM_SW
0 POSITION
220 VREF+
MIC
0 OPEN_SW
0 OP/CL_FWD
0 OP/CL_REV
ST_SW
0
0 PLAY_SW
C2900
4700P
R2935
R2938
C2904
R2939
C2905
5.6K
1000P
C2902
R2941
C2937
10K
3300P
R2943
10K
C2917 0.068
C2918 0.068
C2919 0.068
R2944 15K
C2921
C2922
16V100
R2969 R2952
68 68
+15V
: MIC SIGNAL LINE
: MAIN SIGNAL LINE
C2218 16V10
C2120 16V10
L2821
G0C100JA0030
80 79 78 77 76 75
1
2
3
4
C2899
5
50V2.2
6
7
15K
C2901
8
3.9K
560P
9
10
2700P
R2940
27K
11
1000P
12
C2936 50V2.2
13
R2942 C1BB00000801
4.7K
14
C2907 15
1800P
16
17
18
19
C2920 20
0.068
21
16V47
22
23
C2923
24
0.1
R2945
0
25 26 27 28 29 30 31 32 33
R2946
12K
R2947
10
R2955
D5858
B0BC5R000009
89
74 73 72 71 70 69 68 67 66 65
64
63
62
61
60
59
58
57
56
55
54
53
IC2813
52
51
KARAOKE IC
50
49
48
47
46
45
44
43
42
41
34 35 36 37 38 39 40
C2925
4700P
220
R2991
0
SA-VK81DEE
C2121
50V1
C2219
50V1
R2948
0
C2932
4700P
C2929
0.1
C2928
0.1
C2926
4700P