Panasonic SA-DK3 Service Manual page 167

SCHEMATIC DIAGRAM-29
C
MAIN CIRCUIT
Q383
2SB621ARSTA
REGULATOR
4.9V 6.8V
6.2V
Q384
2SC2412KT96R
REGULATOR
6.2V
4.7V
D383
DA204KT146
4.2V
Q381
2SB1417PQTA
REGULATOR
5V 6.8V
Q382
6.2V
2SC2412KT96R
REGULATOR
6.2V
4.9V
D381
DA204KT146
4.3V
R352
56K
Q352 0V
2SC2412KT96R 0.2V
FAN MOTOR DRIVE
Q351
KTA12710YTA
DAP202KT146
FAN MOTOR DRIVE
R357
10K
0V 9.1V
(0V)
9.1V R353 Q353
4.7K
(8.3V)
2SC2412KT96R
FAN MOTOR DRIVE
R355
5.6K
9.1V
(0V)
R354
820K
C352
0.1
:NEGATIVE VOLTAGE LINE :AUDIO/ FRONT MID SP. DRIVE SIGNAL LINE
:POSITIVE VOLTAGE LINE :SUB WOOFER/ FRONT LOW SP DRIVE SIGNAL LINE
R383
4.7K
D385 D456
RL1N4003N02 RL1N4003N02
R385 R386 Q385
4.7K 4.7K
DTA114EKA146
STABILIZER
A B
Q354
Q354
2SC2412KT96R
5V
SWITCHING
0V
R356 C353
100 6.3V100
D351
R362
10K
0V
R332 C329
1K 16V10
0V
Q307
0.6V
2SD2144STA
MUTING
C333
50V3.3
Q202
2SA1037AKSTX
MUTING CONT.
(1.6V)
1.4V 1.4V
0.8V
H
K
9.1V
R384 R387
1 1
9.1V
10K
8.5V
10K
-3V
7.7V
Q372,373
7.7V 2SC2412KT96R
7.5V
POWER CONT.
R373
0.8V
0V
100K
0V
Q373
Q372
Q371
2SA1037AKSTX
POWER CONT. D373
1SS355TE17
B C Q375
R378
5V
1K
10K -3V -3V
Q374
7.6V
DTC114TKA146
SWITCHING
Q375
2SA1037AKSTX
SWITCHING
D
R375
39K
A
-27.8V
R377
10K
-7.6V
7.8V
7.7V
9.1V
D454 RL1N4003N02
7.7V
14.9V
:SURROUND/
FRONT HIGH SP DRIVE SIGNAL LINE
:CENTER SP. DRIVE SIGNAL LINE
C330 R337
JK204
16V10 220
SUB WOOFFER
C331
0.01
FAN MOTOR
CN351 M
A
1
2
B
R338
3.3K
CN504
1
B MID/ FL
2
MID/ FR
3
A
To
S.GND
4
AMP CIRCUIT
S.GND
5
(CP504) on
D S.W
6
SCHEMATIC
A TW/ SL
7
DIAGRAM-32
B TW/ SR
8
C CCH
9
SUB+B
15.8V 10
CN503
1
2
R443
3
1K
To
SPCONT
4
AMP CIRCUIT
FAN
5
(CP503) on
D.GND
6
SCHEMATIC
D.GND
7
DIAGRAM-32
DC DET
8
HP SW
9
0.2V
PCONT
10
7.7V
R380
68K
R278
3.3K
CN506
-VP
10
P.GND
9
To
/ TUNER
8
SUPPLY
-B
7
CIRCUIT
+B(2)
6
(H506) on
PCONT
5
SCHEMATIC
+B(5)
4
DIAGRAM-30
+B(4)
3
SUB+B
15.8V 2
+B(3)
1
N
POWER
N
POWER
O
POWER