Panasonic SA-AK78 Service Manual page 42
Hide thumbs
Also See for SA-AK78:
- Service manual (85 pages) ,
- Operating instructions manual (45 pages) ,
- Operating instructions manual (44 pages)
Table of Contents
Advertisement
SA-AK78
SCHEMATIC DIAGRAM-16
K
J
Q203
2SA1037AKSTX
MUTING CONT.
R441
10K
A
IC301
M5228FPE1
BUFFER AMP
Q803
IMX9T110
ATTENUATOR
0V
1
3
R850
3.9K
R849
3.9K
All manuals and user guides at all-guides.com
:POSITIVE VOLTAGE LINE
:NEGATIVE VOLTAGE LINE
C262
50V4.7
R266
-5.3V
1K
-5.3V
-5.3V
-5.3V
0V
-5.3V
((0.6V))
1
3
R265
Q201
1K
2
IMX9T110
5
MUTING
0V
6
4
C261
50V4.7
((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
R302
68K
68K
C303
C301
C314
C302
C304
33P
100P
0.01
100P
33P
0V
0V
7.7V
0V
7
6
5
4
3
2
Vcc
Vss
8
9
10
11
12
13
0V
0V
-7.7V
0V
0V
C311
C309
C313
C310
C312
1000P
100P
0.01
100P
47P
R310
R312
1.8K
33K
R311
R309
180K
2.2K
IC303
BU4066BCF-E2
R320
8.2K
SWITCHING
2.3V
2.3V
5V
2.3V
14
13
0.6V
5
6
2
4
0.6V
0V
1
2
0V
0V
R335
15K
Q306
2SA1037AKSTX
ATTENUATOR DRIVE
R432
1.5K
1.2V
1.3V
0.7V
C
R806
2.2K
:CD SIGNAL LINE
R268
R270
3.3K
68K
-5.3V
-5.3V
C264
C266
100P
47P
-5.3V
-5.3V
-5.3V
0V
0V
((0.6V))
5
6
7
IC203
M5218AP
BUFFER AMP
4
3
2
-7.7V
0V
C272
C263
C265
0.01
100P
47P
R267
3.3K
-7.7V
R303
C305
1K
16V10
R304
C306
1K
16V10
-5.3V
0V
-5.3V
1
-5.3V
-5.3V
-5.3V
((0.6V))
14
0V
R314
C316
1K
16V10
-5.3V
-5.3V
-5.3V
-5.3V
R313
C315
-5.3V
1K
16V10
((0.6V))
R324
39K
0V
0V
2.3V
2.3V
0V
0V
0V
0V
2.3V
12
11
10
9
8
3
4
5
6
7
0V
-1.1V
0V
0V
0V
R325
0V
1K
5V
R329
47K
Q305
5V
DTC114YKA146
0V
SWITCHING CONT.
0V
0V
10K
4.3V
4.3V
47K
R442
1K
G
H
F D I
0V
0.6V
42
:SUB WOOFER/FRONT LOW SP DRIVE SIGNAL LINE
:SURROUND/HIGHT SP DRIVE SIGNAL LINE
7.7V
R276
C270
560
16V10
7.7V
8
1
0V
R275
C269
560
16V10
R252
10
R269
R251
68K
10
C307
R281
10K
16V10
A
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
B
C318
16V10
C
Q302
IMX9T110
R318
1K
MUTING
-5.3V
-5.3V
0V
-5.3V
1
3
-5.3V
R317
-5.3V
1K
((0.6V))
2
5
0V
6
4
D
R319
10K
C324
R327
50V4.7
2.7K
IC302
C323
M5218AFPE3
C325
50V1
100P
BUFFER AMP
-7.7V
0V
4
3
R331
2.7K
5
6
0V
0V
4.3V 0V
R367
1K
R392
22K
C391
0.068
Q804
2SD2114K1V
ATTENUATOR
5V
5.1V
3.3V
7.7V
-7.7V
14.2V
14.8V
A
B
F
E
7.7V
-7.7V
R328
390K
C326
1000P
0V
0V
2
1
7
8
0V
7.7V
C393
50V4.7
Advertisement
Table of Contents
