L) Power Supply Circuit - Panasonic SB-VK61 Service Manual

SA-VK61DGS

20.7. (L) Power Supply Circuit

SCHEMATIC DIAGRAM - 34
POWER SUPPLY CIRCUIT
TGND
1
+15V
2
3
4
TO AGND
5
MAIN CIRCUIT
AGND
6
(CN300) ON
R504
7
SCHEMATIC
R503
DIAGRAM - 23
8
FR_L
9
FR_R
10
DC_DET
11
MUTE_IN
12
CP500
PGND
1
DSPGND
2
VGND
3
+9V
4
-9V
TO
5
MAIN CIRCUIT DGND
6
(CN301) ON
SUB+B
7
SCHEMATIC
8V
8
DIAGRAM - 23
SW5V
9
FAN
10
LED9V
11
MO10V
12
CP501
50V2.2
22 21 20
C503
820P
C502
820P
R505 R506
10K 10K
R502
15K
R501
15K
3.9K
3.9K
Q540 Q543
B1BCCG000021 B1ACCF000063
REGULATOR REGULATOR
Q542 Q544
B1BACG000009 B1ACCF000063
REGULATOR REGULATOR
Q541
2SD1859QRTV2
REGULATOR
D524
R525 R524
47K 47K
D525
D524, 525
B0EAKM000117
D526
B0AACK000004
C519 R529
100K
: +B SIGNAL LINE
: -B SIGNAL LINE
IC500
RSN312H24-P
POWER HIC
19 18 17 16 15 14 13 12
R510 56K
C510 15P
R509 56K
C509 15P
Q542
R546 C541
2.7K 0.01
R545
47K
R544
R547
5.6K
2.7K
Q543
Q541
D542
Q544
D541
D540
B0BA02400029
R543
R565
B0BA01100004
8.2K 330
R542
47K
R541 C540
2.7K 0.01
Q540
IC501
C5BA00000113
VOLTAGE REGULATOR
1 2 3 4 5 6 7 8 9
CP503
TO
POWER CIRCUIT
(CN957) ON
SCHEMATIC
DIAGRAM - 36
102
: MAIN SIGNAL LINE
11 10 9 8 7 6 5 4
C506
0.01
R512
1K
D500, 501
B0JAPG000019
R513 680
R548 4.7
R549
22K
C517
16V220
D543
R551
B0AACK000004
22K
R550
10K
Q546
R552 D544
B0AACK000004
3.3K
R554
10K
R555
Q545
10K
R553
Q545
10K
D541, 542
B1ACCL000012
SWITCH
Q546
B1ACCL000010
R540
SWITCH
4.7
IC501
2 3 4 5 6
1
C523
C525
50V47 50V47
D528 - 530
B0EAKM000117
D530 D529 D528
10 11 12 1 2 3 4 5 6 7
CP502
TO
POWER CIRCUIT
(CN956) ON
SCHEMATIC
DIAGRAM - 36
3 2 1
R517
10K
R559
10K
Q547
R557
100
R560 R561
4.7K
39K
R556
33K
R562 C542
0.01
56K
Q547
KTC3199GRTA
SWITCH
7 8 9 10 11 12
R522
1.5K
C520
25V330
8 9 10 11 12