Panasonic SC-AK320 Schematic Diagram page 5

SCHEMATIC DIAGRAM - 5
: +B SIGNAL LINE
: -B SIGNAL LINE
MAIN CIRCUIT
R221
3.9K
R222
4.7K
C307
100P
C224
0.047
C424
0.047
R422
4.7K
R407 R207
82 82
R408 R208
5.6K 5.6K
C308
100P
R421
3.9K
Q402
KTC3875GRTA
AGC CONTROL
PLLCE
R318
100
PLLDA
R319
100
PLLCLK
R320
100 R321
100K
R322
100K
+9V
C323
1000P
C321
1000P
CD3.3V
CD7.5V
CDR
CDL
19 18 17 16 15 14 13 12 11 10
: CD SIGNAL LINE
: MAIN SIGNAL LINE
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
R230
12K
R223
47K
4 3
GND
C225 C319
100P 0.01
IC302
C425 C318
100P 0.01
5 6
R423
47K
C427
R430
100P
12K
R424
R425
3K
56K
C442
6800P
<0.02V>
D402
<0.02V>
((0.02V))
MA728TX
((0.02V))
Q402
R429
<0.02V>
C429 R428
1K
((0.02V))
16V10 100K
R323
100K
R329
10K
R324
5.6K
R325
5.6K
R326
5.6K
R327
5.6K
R387
0
R388
0
9 8 7 6 5 4
TO
SERVO CIRCUIT
(CN702) ON
SCHEMATIC DIAGRAM-2
TO
PANEL CIRCUIT
(CP600) ON
SCHEMATIC DIAGRAM-9
<0.02V>
R248
<0.02V>
220K ((0.02V))
((0.02V))
Q202
R225
R229
56K
<0.02V>
1K
R224 R226 R227
((0.02V))
3K 2.2K 4.7K
C227
C228
100P
47P
R231
R384
2.2K
C230
16V10
2 1
<0.02V>
((0.02V))
R232
C231
Q203
100K
1000P
<0.02V>
C431
((0.02V))
1000P
R432
Q403
100K
VCC
C430
7 8
16V10
R431
2.2K
C428
47P
Q203,Q403
KTD1304TA
MUTING SWITCH
R448
Q202
220K
KTC3875GRTA
R426
AGC CONTROL
2.2K
IC302
C0AABB000117
HP AMP
R427
4.7K
Q303
KRC101STA
BLKCLK INTERFACE SWITCH
Q304
KRC101STA
SUBQ INTERFACE SWITCH
Q305
R328
KRC101STA
4.7K Q303
CD STATUS INTERFACE SWITCH
<4.84V>
((4.85V))
R330
10K
R331
10K
R332
10K
C324
100P
C325
100P
C326
100P
3 2 1
CN310
9 8 7 6
D202
MA728TX
C229 R228
R236
16V10 100K
47
R234
47
C232
50V0.33
0
R450
<-3.45V>
3.3K Q407
((0.7V))
<0.02V>
R233
((0.02V))
<0.02V>
1.5K
((0.02V))
<-3.48V>
((0.7V))
R250
Q207
R433
3.3K
<0.02V>
1.5K
<0.02V>
((0.02V))
((0.02V))
C432
50V0.33
Q307
<-3.47V>
R337
((1.82V))
27K
C310 R339
10V10
56K
<0.02V>
((0.02V))
Q304
<0.04V> <4.84V> <0.04V>
((0.01V)) ((0.06V)) ((0.01V))
<0.04V> <0.04V>
((0.02V)) ((1.45V))
CN302
5 4 3 2 1
R237 R436 R437
47 47 47
C233 C433
R235 R434 R435
1000P 1000P
47 47 47
R247
<0.02V>
220
((0.02V))
<-3.46V>
R449
((0.7V))
1.5K
<0.02V>
((0.02V))
<-3.45V>
R249
((0.7V))
1.5K
R447
220
Q207,Q407
KTD1304TA
HEADPHONE
<0.28V>
MUTING SWITCH
((1.92V))
Q307
KRA102STA
AUDIO MUTING
CONTROL SWITCH
R333
10K
R334
10K
R335
10K
Q305
R336
1K
<4.84V> <0.04V>
((4.83V)) ((0.01V))
R344
10K
<0.04V>
((0.02V))