Panasonic SA-AK88 Service Manual page 35

SCHEMATIC DIAGRAM-23
IC501
STK470-040
REGULATOR
1 2 3 4 5
14.5V 9.8V 10.4V 5V
A B
R565
RSFMB40KT-L
C549 R567
100V10 100K
Q519
2SB1417PQT
POWER SUPPLY
3.3V 10.4V
9.7V
Q516
KTC3199GRTA
POWER SUPPLY CONT.
9.7V
3.2V
D512
2.6V
RVD1SS133TA
D518
RVD1SS133TA
7.7V
-7.9V
3.3V
5V
-31V
10.4V
:POSITIVE VOLTAGE LINE
:NEGATIVE VOLTAGE LINE
6 7 8 9 10 11 12
-27.8V -8.5V -7.9V 7.7V 14.8V 16.0V 28.0V 60V
C544 C552
0.01 0.01
R590 R599
1.5K 4.7K
D524 1D3E
C571 35V3300
D526 1D3E
C574 35V3300
A B
R551
2.2K
Q509
KRC110MTA
SWITCHING
3.2V
0.2V
B A
:CD-DA/V-CD (AUDIO) SIGNAL LINE
:SURROUND SP. DRIVE SIGNAL LINE
:CENTER SP. DRIVE SIGNAL LINE
13 14 15 16 17 18
29.2V -29.7V -60.7V
Q515
2SC3940AQSTA
REGULATOR
14.9V 60V
15.1V
R593
820K
D528
RVD1SS133TA
A
B
Q501
2SB1417PQTA
REGULATOR D514
R529
1D3E
4.7
-31V -38.2V
-31.6V
R521
220
R576 R575
47 47
RL501
5
Q512
2SC1740SSTA
RELAY DRIVE
6
R578
0V
3.3K
0.8V
D
C
A
B
E
F
D528
C550
35V100
C583
0.22
B A
2 1
4 3
C584
0.022
H501
JK502
L ch
LOW
(6 )
R ch
SPEAKERS
JK503
L ch
HIGH
(6 )
R ch
JK504
CENTER
SPEAKER
(8 )
L ch
SURROUND
SPEAKERS(4 )
R ch
E500
1
2
3
4
5
6
7
8
9
10
11
12
13