Panasonic SA-AK500PC Service Manual page 201

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
1.8K 1.8K
R208
R408
5.6K
5.6K
C308
100P
R421
3.9K
Q402
KTC3875GRTA
AGC CONTROL
+9V
R802 10K
R808 10K
R810 10K
R804 10K
R806 10K
C223
0.01
C423
0.01
30 29 28 27 26 25 24 23 22 21 20 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
R225
56K
R224
R230
3K
12K
C227
100P
R223
47K
4 3
GND
C225 C319
0.01
100P
IC302
C425 C318
100P 0.01
5 6
R423
47K
C427 C428
R430
100P 47P
R424
12K
3K
R425
56K
R448
220K
C442
6800P
R426
2.2K
<0.02V>
D402
<0.02V>
((0.02V))
MA728TX
((0.02V))
Q402
R429
<0.02V>
C429 R428
1K
((0.02V))
16V10 100K
C803
1000P
C804
R807 R809
4.7K 4.7K
6.3V100
L801
RLL500050T-Y
C805
10V100
TO
CD SERVO CIRCUIT
(CN702) ON
SCHEMATIC DIAGRAM-2
TO
PANEL CIRCUIT
(CP600) ON
SCHEMATIC DIAGRAM-10
<0.02V>
R248
<0.02V>
220K ((0.02V))
((0.02V))
Q202
R229
<0.02V>
1K
((0.02V))
C242
R226 R227
2.2K 4.7K
6800P
C228
47P
R231
R384
2.2K
C230
0
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
Q203,Q403
KTD1304TA
MUTING SWITCH
Q202
KTC3875GRTA
AGC CONTROL
IC302
C0AABB000117
HP AMP
R427
4.7K
Q303
KRC101STA
BLK CLK INTERFACE
Q304
KRC101STA
SUBQ INTERFACE
<0.01V>
Q305
((0.02V))
KRC101STA
CD STATUS INTERFACE
Q303
Q306
KRC101STA
RESET INTERFACE
R823
10K
9 8 6 5 4 3 2
7 1
9 8 7 6 5
D202
MA728TX
C229 R228
R236 R237
16V10 100K
47 47
R234 R235
47 47
C232
50V0.33
<0.02V>
((0.02V))
R450
<-3.45V>
3.3K Q407
((0.7V))
<0.02V>
R233
((0.02V))
<0.02V>
1.5K
((0.02V))
<0.02V>
<-3.48V>
((0.02V))
((0.7V))
R250
Q207
R433
3.3K
<0.02V>
1.5K
<0.02V>
((0.02V))
((0.02V))
C432
50V0.33
Q307
R337
<-3.47V> <0.28V>
27K
((1.82V)) ((1.92V))
C310 R339
10V10
56K
<0.02V>
((0.02V))
R387
0
<0.02V>
<0.02V>
((0.02V))
((0.01V))
<0V>
<0V>
((0V))
((0.01V))
Q304 Q305
<0V> <0.01V>
((0.01V)) ((0V))
R824 R825
10K 10K
CN310
CN302
4 3 2 1
R436 R437
47 47
C233 C433
1000P
1000P
R434 R435
47 47
R247
220
<-3.46V>
R449
((0.7V))
1K
<-3.45V>
R249
((0.7V))
1K
R447
220
Q207,Q407
KTD1304TA
HEADPHONE
MUTING SWITCH
Q307
KRA102STA
AUDIO MUTING
CONTROL SWITCH
R814 10K
R815 10K
R816 10K
R817 10K
C806 470P
<0.01V>
((0.01V))
<0V>
<0.01V>
((0.01V))
((0V))
Q306
<0V> <0V>
((0V)) ((0V))
R826
10K
C807 100P
C808 100P
C809 100P
R818 10K