JVC KS-AX4500 Service Manual page 23

MAIN PCB [2/3] and SUB PCB circuit diagrams
7
+15V
C391
104P
C392
C301
R302 C305
JA01-C U301-A
8 473P
4.7/50V VR301-A
21.5KF 100P NJM2068LD
SY-SW0406G 5
+
6
20KB
C307
- 7
R301 R303 R308
6 4.7/50V
4
22KF 22KF 1K
R306
C302
33KF
4.7/50V
R309 R310
1.3KF 15K
C306
22P
R305 C304
C491
33KF 22P
R-IN
104P
-15V
5
JA03
C361
R361
LAD1140-04
4.7/50V
68KF
+ R363
C362 R362
15K
4.7/50V 68KF
-
C364
C363
102P
102P
HI-INPUT
C464 C463
-
102P 102P
C462 R462
R463
4.7/50V
+ 68KF
15K
C461 R461
4 4.7/50V 68KF
L-IN
A
U301-B
C401
R402 NJM2068LD
JA01-D
R408
4.7/50V
21.5KF
8
SY-SW0406G 3
1K
1
R410
R401
C402 R403 15KF
2
VR301-B
22KF
4.7/50V 22KF
20KB
C407
C405
3 R406 33KF
4.7/50V
100P
R404 C403 R409
C100 C404
R405 C406
470 1.3KF
330/25V 103P 22P
33KF 22P
2
1
A B
KS-AX4500
+15V
C314 104(M)
+15V +15V
8
3
C393
R321 R322
473P
2
30K 30K
U302-A
R313
4558F
8 U303-A C315
1K 8
4558F
3 473(M)
3
1
2 1
R314
4 2
R312
1K
R323 30K
30KF
C311 47P
U304-B
R311 C308
VR302-A 4558F
R315 R316
11KF 68P
20KB
1K 20K
5
R317
C316 C317
C492 C312
6
100K
473(M) 473(M) 4
473P 224(M)
R318
5.6K
-15V R324
C313
62K
U303-B
183(M) -15V
4558F
5
7
R319
6
4
470K
C493
473P
-15V
BASS BOOST(50Hz,0-12dB/oct) LPF-FLAT-HPF
(80Hz,12dB/oct)
+15V
C414 104(M)
+15V
8
3
C408 36P
C395 R421 R422
2
473P 30K 30K
R412 56KF
R413
C415
8 U305-A
5
1K 4558F
3 473(M)
7
6 1
R414 2
U302-B
4
4558F
1K
R423 30K
C411 47P
R411
12K
U306-B
4558F
VR302-B R415 R416
20KB 1K 20K
5
R417 C416 C417
C412
6
100K
224(M) 473(M) 473(M) 4
R418
5.6K
R424
62K
C413
U305-B
183(M) 4558F -15V
5
R419
7
6
470K
4
C495
473P
-15V
C D
2-4
+15V
R333 R337
1K 1K
C333
R334
22/16V
Q301
5.6K
Q302
C3198GR
C3198GR
C394
473P
R338 R339
1
22 22
U304-A
SW301-A R331 C331
C330
4558F
LPF
JSS2319 5.6KF 4.7/50V
4.7/50V
FLAT
HPF
R332
22KF
R340 R341
C332 22 22
68P
7
C494 Q303
Q304
473P A1266GR
A1266GR
R335
5.6K
R342
C334
1K
R336
22/16V
1K
Q300
J108
R348
-15V
R330 1KF
10K
C339
100/16V
MUTE +15V
R430
10K
Q400
R433 R437
J108
1K 1K
C433 R434
22/16V 5.6K
Q401
Q402
C3198GR
C3198GR
C396
473P
R439
R438
1
22
22
U306-A SW301-B C430
C431
4558F
LPF JSS2319 4.7/50V
4.7/50V
FLAT
HPF
R431
5.6KF
R440 R441
C432 22 22
68P
7 R432
22KF
Q403
C496 Q404
A1266GR
473P A1266GR
R435
5.6K
R442
1K
C434
R436
22/16V
1K
R448
-15V
1KF
C439
100/16V
Caution
If electricity is connected during disassembly, it must be a no load current. If it is load
current, be sure to attach a heat sink to the power-amp IC. This will be damaged if the
above precautions are not followed, as it does not have a sub heat sink attached to it.
E F G
R343
47
Q305
A1268GR Q310
Q308
C335
D998
C1027Y
150P
Q312
R352
C3200GR
1.5K
R353
15K
R344 R350
D301
C340
3.9K 0.1/3W
1N4148
150P
C336
R349
473(M)
220
Q307
R351
C3200GR
0.1/3W
R345
2.7K
C337 Q309 Q311
150P A1023Y B778
Q306
C3200GR
R346
47
R347 12KF
R354
56K
C338 56P
OFFSET
R454
56K
R443
47
Q405
A1268GR Q410
Q408
C435
D998
C1027Y
150P
Q412
R452
C3200GR
1.5K
R453
15K
R444
R450
D401
3.9K C440
0.1/3W
1N4148
150P
C436
R449
473(M)
220
Q407
R451
C3200GR
0.1/3W
R445
2.7K
Q409 Q411
C437
A1023Y B778
150P
Q406
C3200GR
R446
47
R447 12KF
C438 56P
Indicates main signal path
H I
PROTECTION
R356 R355
680/2W 4.7/0.5W
C341
104(M)
P03
TM0009-00
C342
104P
CHASSIS
R455
R456
4.7/0.5W
680/2W
C441
104(M)
J