Panasonic SA-AK66 Service Manual page 8

SCHEMATIC DIAGRAM - 6
MAIN CIRCUIT
KRA102STA
MUTING SWITCH
Q301
CONTROL
R341
R434 R246
R234
100K
39 22K
39
C438
50V1
C220
C420
3300P 3300P
R342
68K
R233
R433 R445
39
39
22K
C412
R481
1K 50V2.2
C419
50V2.2
R423
1K
R422
100K
Q401
C425
1000P
R223
1K
R222
C225
Q201
100K
1000P
C219 R282
50V2.2 1K
Q201,Q401
KTD1304TA
KTC3875GRTA
MUTING SWITCH
C226
16V10
C426 R429
R430
16V10 1.2K
27K
C422
100P
C421
47P
((0V))
((0V))
7 6
-
+
+
-
8 9 10
((0V))
((0V))
C228
R239 47P
33K
R238
R237
2.7K
100
R240
1.5K
: +B SIGNAL LINE : MAIN SIGNAL LINE
: +B SIGNAL LINE
Q301
Q302
-VP
R247
Q207
1K
R476
Q404
Q207,Q404
1K
KTD1304TA
MUTING SWITCH (HP)
D401
R486
R485
1K MA728TX
27K
Q406 C446 R487
16V10 100K
R488
6.8K
R298
6.8K
R297
C246
100K
16V10
Q206
R296
D201
1K
MA728TX
R295 27K
C212
50V2.2
Q307
Q206-Q406
KRC111STA
DC DETECT SWITCH
AGC SWITCH
R229
R431
1.2K
4.7K
C460
C223 16V10
0.01
C222
R231
100P
4.7K
R230 27K
C221 47P
((0V)) ((0V)) ((0V)) ((0V))
((9V))
5 4 3 2 1
+VCC
-
+
IC309
IC309
M5228FPE1
+
QUAD OP-AMP IC
-
-VCC
11 12 13 14
((0V))
((0V)) ((-9V)) ((0V)) ((0V))
R439
C428 390
4.7K
R438 27K
R437
2.7K
C230
16V10
Q403
KTD1304TA
MUTING SWITCH
(CENTER
Q203-Q204
KTD1304TA
MUTING SWITCH
Q308
KRA111STA
MUTING SWITCH
CONTROL
D306
MA8300MTX
R460
100K
R344
D305
4.7
R346
150
HPSW
PCONT
+9.0V
DCDET1
LOUT
LOCH
SLOUT
SROUT
ROUT
LOUT
+15V
-9.0V
+9.0V
D308
Q307
ROUT
DCDET1
D307
1SS355TE17
10V
LED9V
SW5V
CD3.3V
D312
CD7.5V
RL1N4003S-P
DPL/ST
FAN
D308-D310
DAP202KT146
D309
DCDET1
C423
16V10
Q402
Q202,Q402
Q202
KTD1304TA
MUTING SWITCH
(SURROUND)
C457
Q306
50V3.3
KRA111STA
MUTING SWITCH R441
150K
CONTROL (SURROUND)
R442
68K
C431
16V10
R397
1K
R241
100K
Q203
)
Q308
R446
3.3K
D304-D305
RL1N4003S-P
Q302
2SB621ARSTA
VOLTAGE
REGULATOR (-VP)
R352
39K
R353
15K
D310
C424
16V10
SLOUT
SROUT
R467
C224
0
16V10
Q306
R443
5.6K
MUTE_S
C432
CCH
16V10
R399
Q403
1K
C458
50V0.47
R398
C231
150K R244
R242
16V10 220
1K
Q204
MUTE_C
+15V
12
HPSW
11
PCONT
10
DCDET1
TO
9
/CD
POWER CIRCUIT
8
LOCH
(CP501) ON
7
SLOUT
SCHEMATIC
6
SROUT
DIAGRAM-11
5
4
ROUT
3
LOUT
2
+15V
1
AGND
CP501
10V
12
LED9V
11
-VPVCC
10
SW5V
9
TO
CD3.3V
8
POWER CIRCUIT
8V
7
(CP500) ON
DPL/ST
6
SCHEMATIC
FAN
5
DIAGRAM-11
-9.0V
4
+9.0V
3
GND2
2
1
CP500
1
SUB WOOFER
2
JK203