Schematic Diagram-16 - Panasonic SA-AK78 Service Manual

SA-AK78

SCHEMATIC DIAGRAM-16

K
J
Q203
2SA1037AKSTX
MUTING CONT.
R441
10K
A
IC301
M5228FPE1
BUFFER AMP
0V
3
R850
3.9K
R849
3.9K
:POSITIVE VOLTAGE LINE
-5.3V
-5.3V
-5.3V
-5.3V
0V
-5.3V
((0.6V)) 1 3
Q201
2
IMX9T110
5
MUTING
0V
6 4
((1.2V)) 0.2V 5V ((1.3V))
R280
0.2V 0.2V 5V 5V
1K
0.2V 0.2V 5V 5V
5V 5V
5V 5V
D201
5V ((0.6V))
UDZSTE175R1B
R301
68K
C303 C301 C314 C302
33P 100P 0.01 100P
0V 0V 7.7V
7 6 5 4 3 2
Vcc
Vss
8 9 10 11 12 13
0V 0V -7.7V 0V
C311 C309 C313 C310
1000P 100P 0.01 100P
R310
1.8K
R311 R309
180K 2.2K
IC303
BU4066BCF-E2
R320
8.2K
SWITCHING
Q803
IMX9T110
5V
ATTENUATOR
14
0.6V
1 5 6
2 4
0.6V 0V
1
0V
R335
Q306
2SA1037AKSTX
ATTENUATOR DRIVE
R432
1.5K
1.2V 1.3V
0.7V
R806
2.2K
:NEGATIVE VOLTAGE LINE :CD SIGNAL LINE
C262 R268
50V4.7 3.3K
R266
-5.3V
1K
-5.3V C264 C266
100P 47P
-5.3V
-5.3V
-5.3V
0V
((0.6V))
5 6
R265
1K
IC203
M5218AP
BUFFER AMP
C261
50V4.7
4 3
-7.7V
C272 C263
0.01 100P
R267
3.3K
-7.7V
R303 C305
1K 16V10
R302
68K
C304 R304 C306
33P 1K 16V10
-5.3V
0V 0V
-5.3V
1
-5.3V
-5.3V
-5.3V
((0.6V))
14
0V 0V
C312 R314 C316
47P 1K 16V10
R312
33K
R313 C315
1K 16V10
R324
39K
0V 0V
2.3V 2.3V
2.3V 2.3V
0V 0V 0V 0V
2.3V 2.3V
13 12 11 10 9 8
2 3 4 5 6 7
0V
-1.1V
0V 0V 0V
0V
R325
0V
1K
5V
15K
R329 47K
Q305
5V
DTC114YKA146
0V
SWITCHING CONT.
0V
0V
10K
47K
C G H F D I
0.6V
42
:SUB WOOFER/FRONT LOW SP DRIVE SIGNAL LINE
:SURROUND/HIGHT SP DRIVE SIGNAL LINE
R270
68K
R276 C270
560 16V10
0V 7.7V
7 8
2 1
0V 0V
C265 R275 C269
47P 560 16V10
R269 R251
68K 10
C307 R281
16V10
Q301
IMX9T110 R307
1K
MUTING
-5.3V
-5.3V
0V
-5.3V
4 6
-5.3V
R308
-5.3V
1K
((0.6V))
5
2
0V
3 1 C308
16V10
C318
16V10
Q302
R318
IMX9T110
1K
MUTING
-5.3V
-5.3V
0V
-5.3V
1 3
-5.3V
R317
-5.3V
1K
((0.6V))
2
-5.3V
-5.3V
5
-5.3V
0V
-5.3V
6 4
-5.3V
((0.6V))
C324
50V4.7
IC302
C323 M5218AFPE3
50V1
BUFFER AMP
-7.7V
4
R331 2.7K
5
0V
4.3V 4.3V 0V
4.3V
R442 R367
1K 1K
C391
0.068
0V Q804
2SD2114K1V
ATTENUATOR
5V
5.1V
3.3V
7.7V
-7.7V
14.2V
14.8V
7.7V
A
B
R252
10
F
E
7.7V
10K
A
B
C
D
-7.7V
R319
10K
R327 R328
2.7K 390K
C326
C325
100P 1000P
0V 0V 0V
3 2 1
6 7 8
0V 0V 7.7V
C393
50V4.7
R392
22K