B) Main Circuit - Panasonic SA-VK31EE Service Manual

16.3. (B) Main Circuit

SCHEMATIC DIAGRAM - 4
MAIN CIRCUIT
CHG_CW
14
CHG_HALF
13
8V
12
CHG_CCW
11
CLAMP
10
TO
OPEN
CD LOADING
9
SW1
C2926
CIRCUIT
8
0.47
PGND
(CN1) ON
7
SCHEMATIC
SW2
6
DIAGRAM - 18
DGND
5
5V
4
POSITION
3
BOTTOMSW
2
PLUNGER
1
CN2909
+9V
-9V
FAN
1 MUTEH
DC_DET
2
MUTE_H
3
+15V
4
TO
HI_L
POWER 5
LO_L
HI_R
CIRCUIT
6
GND1
(CN5800) ON
7
LO_L
SCHEMATIC
8
DIAGRAM - 16 LO_R
9
C2938
0.22
10
11
TGND
12
CN2900
LO_R
DGND
1
DGND
2
HI_L
UPGND
3
SUB+B
4
TO
CD8V
POWER
5
CIRCUIT
6
(CN5801) ON
7
SCHEMATIC LED9V
8
DIAGRAM - 16
MOT10V
9
+9V
10
-9V
11
HI_R
SW5V
12
CN2901
: -B SIGNAL LINE
: +B SIGNAL LINE
R2940 10K
R2941 47K
R2942 47K
R2943 10K
R2944 22K
R2945 12K
Q2923
R2948 220
R2946 22K
R2947 12K
R2949
1K
R2950
D2924
10K
B0EAKM000117
Q2924
CD8V
MOT10V
SW5V
C2147
Q2104
16V10
R2920 R2139
22 2.2K
R2919
C2110
2.2K 0.1
R2143
3.9K
C2135
50V0.47
C2939
0.22
Q2704
R2739
2.2K
R2745
0
R2743
3.9K
C2735
50V0.47
Q2105
R2142
5.6K
R2141
R2144 C2134
50V1
680
Q2705
R2742
5.6K
R2741
C2734
R2744
680 50V1
Q2104, 2105, 2704, 2705
B1ABCF000131
AMPLIFIER
: MAIN SIGNAL LINE
VREF+
CHG_CW
CHG_HALF
CHG_CCW
CHG_AD1
CHG_AD2
SW1
SW2
CHG_PLGR
Q2923
B1GBCFJJ0039
PLUNGER SWITCH
Q2924
KTA12710YTA
MOTOR SWITCH
Q2103, 2703
B1ABEB000001
MUTING SWITCH
R2137 R2136
18K 18K
C2130
0.015
C2131 R2138
820P 220K
R2737 R2736
18K 18K
C2730
0.015
C2731 R2738
820P 220K
C2133 C2132
8200P 8200P
R2140
4.7K
12K
C2733 C2732
8200P 8200P
R2740
4.7K
12K
55
R2703 R2103
1 1
R2706 R2704
33 33
R2707 R2705
33 33
C2703
1000P
R2708 R2108
3.3K 3.3K
Q2703 Q2103
R2709
1K
C2129 R2128
R2154
50V1 2.2K
220
B1ABEB000001
R2135
1K
R2134
100K
Q2102
R2735
1K
R2734
100K
Q2702
R2754 C2729 R2728
220 50V1 2.2K
Q2901
B1GDCFJJ0023
MUTING CONTROL
R2910
56K
C2909
R2909
50V4.7
27K
LED9V
SW5V
D2905
15V
D2903 - 2905
+9V
B0ADCJ000020
D2904
CD8V
CD7.5V
D2903
MOT10V
D2902
B0ACCK000005
CD7.5V
D2906
B0EAKM000117
SA-VK31EE
R2104 R2106
33 33
R2105 R2107
33 33
C2103
1000P
R2109
1K
C2127
16V10
Q2102, 2702
MUTING SWITCH
C2140
1000P
C2740
1000P
C2727
16V10
R2918
2.2K