Panasonic SA-DK3 Service Manual page 166

SCHEMATIC DIAGRAM-28
:POSITIVE VOLTAGE LINE
:NEGATIVE VOLTAGE LINE
Q
Q201
IMX9T110
MUTING
P
Q203
(-5.1V) 1V
2SA1037AKSTX
MUTING CONT.
R441
10K
G
R301
68K
C303 C301
33P 100P
0V 0V
7 6
IC301
M5228FPE1
BUFFER AMP
8 9
0V 0V
C311 C309
1000P 100P
R311 R309
180K 2.2K
R320
8.2K
Q803
IMX9T110
ATTENUATOR
-3.8V
0V 1 5
6
3 2 4
-3.8V 0V
R850
3.9K
Q306
2SA1037AKSTX
ATTENUATOR DRIVE
R849
3.9K
R432
1.5K
-3.8V
R806
2.2K
:AUDIO/ FRONT MID SP. DRIVE SIGNAL LINE
:SUB WOOFER/FRONT LOW SP DRIVE SIGNAL LINE
C262
50V4.7
R266
1K
0.6V
(-5.1V)
1 3
0.6V
(-5.1V) R265
1K
2 0V
IC203
5
M5218AP
0V
BUFFER AMP
6 4 C261
50V4.7
R280
1K
1.1V (5V)
0.5V
(5V) D201
UDZSTE175R1B
R303
1K
R302
68K
C314 C302 C304 R304
0.01 100P 33P 1K
7.7V 0V 0V
5 4 3 2 1
Vcc
Vss
10 11 12 13 14
-7.6V 0V 0V 0V
C313 C310 C312 R314
0.01 100P 47P 1K
R310 R312
1.8K 33K
R313
1K
IC303
BU4066BCF-E2
SWITCHING
5.2V 4.3V 4.3V 0V
14 13 12 11
1 2 3 4
0V 0V 0V 0V
R329
47K
0V
0V
I M N
R268 R270
3.3K 68K
C264 C266
100P 47P
0V 0V 7.7V
5 6 7 8
4 3 2 1
-7.6V 0V 0V
C272 C263 C265
0.01 100P 47P
R267 R269
3.3K 68K
-7.6V
C305 C307
16V10
16V10
0.6V
C306 (-5.1V)
16V10
4 6
0.6V
(-5.1V)
5 0V
2
0V
3 1
C318
16V10
(-5.1V)
0.6V
1 3
0.6V
C316 (-5.1V)
16V10
2 0V
5
0V
C315 6 4
16V10
R324
39K
0V 0V 0V
10 9 8
C323
50V1
5 6 7
0V -1.1V
R325
1K
R331
2.7K
Q305
DTC114YKA146
SWITCHING CONT.
0V
10K 4.3V
47K
R442 R367
1K 1K
L J O
0V Q804
-3.8V
2SD2114K1V
ATTENUATOR
4.9V
5V
-7.6V
7.8V
7.7V
9.1V
7.7V
14.9V
:SURROUND/ FRONT HIGH SP DRIVE SIGNAL LINE
:CENTER SP. DRIVE SIGNAL LINE
7.7V
R276 C270
560 16V10
A
R275 C269
560 16V10
B
R252
10
R251
F
10
E
7.7V
R281 10K
A
R307
1K
R308
1K
Q301
IMX9T110
C308
16V10
MUTING
B
C
R318
1K
R317
1K
Q302
IMX9T110
MUTING
D
-7.6V
R319
10K
C324 R327 R328
50V4.7 2.7K 390K
IC302
M5218AFPE3 C325 C326
1000P
100P
BUFFER AMP
-7.6V 0V 0V 0V
4 3 2 1
5 6 7 8
0V 0V 0V 7.7V
C392 R392 C393
0.068 22K 50V4.7