Power Circuit - Panasonic SA-AK18 Service Manual

SCHEMATIC DIAGRAM-13

POWER CIRCUIT

Q502
KTC3199GRTA
SWITCH
CP501
GND1
1
15V
2
L_CH C553 50V 0.15
3
R_CH
C554 50V 0.15
TO
4
MAIN/TUNER
5
CIRCUIT
6
(CN300) ON
7
SCHEMATIC
8
CD
DIAGRAM-6
9
DCDET
10
PCONT
11
12
CP500
1
2
+7.5V
TO
3
-7.5V
MAIN/TUNER
4
FAN
CIRCUIT MTZJ8R2BTA
5
FAN
(CN301) ON D500
6
RL1N4003S-P
CD7.5V
SCHEMATIC
7
CD3.3V
DIAGRAM-6
8
SW5V
9
-VP
10
LED9V
11
10V
12
Q509
KRC110MTA
SWITCHING
(CD)
Q510
KTC3199GRTA
BIAS SWITCH
(FOR CD 3.3V)
-30.8V((-30.8V))
Q501
2SB1238QRTV2
REGULATOR
14 13 12 11 10 9 8
C510
330P
C508
C506
330P
1000P
C501 R511
R520
50V 3.3
R505 1K 68K
100K
R513
68K
C500
50V 3.3 R504 1K
0V((0V))
R508 R518
<0V>
5.6K 68K
R503
12K
C514
R500 Q502 C505
15P
100K
50V1
Q503
0V((0V)) 0V((0V))
R509 1K <0V>
<0V>
R502
R506
12K
82K
R501
100K 0V((0V))
<0V>
Q503
Q500
RVTDTA114EST
SWITCH(AGC)
Q500
KTC3199GRTA
Q504
Q505
SWITCH
5V((5V))
<5V>
Q504,Q505
2SC2785FTA
SWITCH (DC-DET)
0V((0V))
<0V>
1 2 3 4
R524
10K
D514
D501
RL1N4003S-P
5V((5V))
<5V>
D502
R515
1.5K
RL1N4003S-P
C509
50V1
R551
470
Q510
-VP
Q501
-42V((-42V))
R516
D507
<-42V>
<-30.8V> 4.7
R510
C503
C521
4.7K
-32V((-32V)) 0.01
63V100
<-32V>
R507
C502
D503
150
100V10
MTZJ33BTA
D510
D507,D508,D509
1D3E
RL1N4003S-P
Q511
2SC1740SSTA
RELAY DRIVE
: +B Line : -B Line
IC500
RSN3502B
POWER HIC
7 6 5 4 3 2 1
C517
100V10
R525
330K
C520
100V10
C519
15P
R523
R538
68K
100K
R522
5.6K
R526
22K
C518
50V1
D513
R532
MA165TA
27K
R517
C522 C531
R529
82K 50V 10
0.47
56K
R533
27K
0.1V((0.1V))
<0.1V>
R547
Q507
10K Q507
2SC1740SSTA
HEADPHONE
0.1V((0.1V))
<0.1V>
IC501
STK470-010A
REGULATOR
5 6 7 8 9 10 11 12 13 14 15 16
C534
C533
C528
0.01
0.01
0.01
R552
4.7K
R531
C550
1/2W 3.9K
50V47 C529
50V47
R548
R535 R555
100 R527
15
1.5K
R549
2.2K R528
1.5k
<3.2V>
C548
25V1000 RL1N4003S-P
C525
25V100
C524
R550
100V10
3.9K
5V((0V))
<5V>
Q509
19V((19V))
<19V>
Q511
C530
35V100
PCONT
C527
D509 D510
25V100
C547
D508
63V100
Q508
2SC1740SSTA
SWITCH (PCNT)
57
: MAIN Signal Line
4
+
2
-
3
+
-
1
R545
R542 R544
120K 10 10
C541
C543
0.1
0.1
C539
1000P
C542
C544
0.1
0.1
C540
100V10
R546
100K
19
17 18
C535
C538
0.01
0.01
C556
0.18
C545
50V2200
R554 R553 R536
39 39 27 22
D522
D521
RL500
5 2 1
R540
R541 47
47
0.1V
D512
((0.1V)) MTZJ12BTA
R556
<0.1V> 6 4 3
120K
0.1V((0.1V))
R543 <0.1V>
3.3K 1
<0.7V>
2
0.7V((0.7V))
Q508
3
C551
4
0.01
5
C536
25V2200
6
D515
7
SUB+B
8
D516
C552
D515-D516
0.01
RL1N4003S-P
SA-AK18
JK500
RCH
SPEAKER
6 OHM
LCH
E500
H500/W500
GND1
TO
GND1
AC TRANS
S1
CIRCUIT
S2
(CN501) ON
SCHEMATIC
DIAGRAM-14
SUB+B