Panasonic SA-AK78 - Schematic Diagram-18

IC501
RSN311W64A-P
POWER AMP(HIGH,MID,LOW)
STABILIZER CIRCUIT
M
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POWER CIRCUIT
L
SCHEMATIC DIAGRAM-18
10
2
1
3
4
5
6
7
8
9
+B(3)
SUB+B
+B(4)
+B(5)
PCONT
+B(2)
-B
/ TUNER
P.GND
-VP
To MAIN CIRCUIT
(CN506)
on SCHEMATIC
DIAGRAM-17
K
10
2
1
3
4
5
6
7
8
9
10
2
1
3
4
5
6
7
8
9
A
B
C
D
E
F
Q501,502
KTC3199GRTA
OVER LOAD DET.
Q501
Q502
Q503
KTC3199GRTA
SWITCHING
HP SW
DC DET
D.GND
D.GND
FAN
SPCONT
SUB+B
CCH
TW/ SR
TW/ SL
S.W
S.GND
S.GND
MID/ FR
MID/ FL
PCONT
A
B
C
D
E
AB CED
To MAIN CIRCUIT
(CN503)
on SCHEMATIC
DIAGRAM-17
K
CP503
To MAIN CIRCUIT
(CN504)
on SCHEMATIC
DIAGRAM-17
K
CP504
H506
Q580
2SB621ARSTA
REGULATOR
R585
1.2K
D576
MTZJ3R3BTA
C578
10V33
Q577
KRA102MTA
POWER SUPPLY
Q578
KRC102MTA
POWER SUPPLY
CONT.
C589
50V10
C588
1000P
R588
4.7K
R589
150
D587
MTZJ30BTA
C583
100
C582
50V100
D582
1D3E
R530
10K
R529
22K
C517
0.01
R567
2.2
R568
2.2
C516
0.01
C515
0.01
D503
RVD1SS133TA
R512
10K
R574
100K
C527
6.3V470
R575
56K
Q506
KRA102MTA
POWER SUPPLY
Q505
KTC3199GRTA
POWER SUPPLY CONT.
R576 2.2K
C523
0.047
R539
10
C524
0.047
R540
10
R518 56K
C502 470P
C501 470P
C504 470P
C503 470P
R517 56K
C511 22P R527 120K
R537
10
C513
0.047
R519
470K
C525
0.047
R541
10
C526
0.047
R542
10
R514
56K
C506 470P
C505 470P
R501
3.9K
R505 15K
R506
15K
R502
3.9K
C508 18P R524 120K
R523 120KC507 18P
R513 56K
R516 56K
C510 22P R526 120K
R515 56K
C509 22P R525 150K
R528 150KC512 22P
D501
RK306LFU1
D502
RK306LFU1
R510
3.9K
R511
15K
R509
3.9K
R508
3.9K
R504
15K
R503
15K
R507
3.9K
D581
1D3E
C521
0.047
C522
0.047
R538
10
C514 16V22
R520 10K
R590
22K
:CD SIGNAL LINE :SURROUND/HIGHT SP DRIVE SIGNAL LINE
:SUB WOOFER/FRONT LOW SP DRIVE SIGNAL LINE:NEGATIVE VOLTAGE LINE
:POSITIVE VOLTAGE LINE
7.7V
-7.7V
14.8V
14.2V
3.3V
14.8V
-32.1V
-65V
64.6V
31.6V
0V 0V 0V 0V 64.6V 0V 0V 31.6V 0V 0V 0V 0V 0V 0V 31.4V 0V -65V 64.6V 0V 0V -31.9V-32.1V -65V
0V
0V
14.4V
14.8V
14.7V
14.3V
0V
0V
7.5V
7.5V
14.4V
14.8V
14.7V
14.3V
14.8V
0V
-0.1V
7.7V
0V
0V
7.7V
7.7V
7.7V
((0V))
0V
7.7V
7.7V
0V
0V
((7.7V))
3.6V
((0V))
0V
0V
3.6V
3.6V
-39.2V-28.4V
-29V
44
SA-AK78