Read Sony SS-US301 / SW-US301 / UZ-US301 Service Manual online
SS-US301/SW-US301/UZ-US301
14
14
5-5.
SCHEMATIC DIAGRAM – MAIN Board (2/3) –
•
See page 11 for IC Block Diagrams.
R385
R386
R341
R344
IC392
D394
R383
C386
C385
R384
C383
C384
R387
R388
R373
R374
C371
C372
C357
R377
R379
C373
C374
R380
R359
R357
R349
R358
C356
R375
C360
R382
R364
C361
C362
R363
C347
R362
R360
R361
C345
R356
R348
R309
C302
R347
C349
IC306
C366
C367
R338
C343
R315
R317
R318
C329
R316
R319
C328
R339
C330
C391
R392
R391
R390
C392
C393
D391
R343
IC307
C350
R342
C346
R340
R322
R323
R324
C333
R337
R326
C338
R327
C336
R325
R330
R329
C340
C348
R328
C334
C342
C332
R320
C331
R321
R396
R395
FB804
D806
C363
R336
R335
R376
Q308
Q307
R372
Q310
Q309
C344
C394
Q392
CN302
CN301
IC310
IC391
Q391
IC309
IC308
µPC4570G2
IC303
µPC4570G2
µPC4570G2
µPC4570G2
IC304
IC305
C351
R355
C381
R399
R397
D805
D804
C808
R398
Q302
Q303
C352
Q312
Q313
Q305
Q306
C301
C325
R314
R345
C326
D393
D397
FB313
FB313
FB312
FB312
FB306
FB306
C353
R371
FB307
FB307
C375
C376
FB308
FB308
FB309
FB309
R378
R381
C377
C378
FB310
FB310
FB311
FB311
FB305
FB305
C382
C337
FB304
FB304
C335
C308
C369
C365
R354
R346
C370
C354
R352
R353
R351
R810
C809
C359
C355
C358
1k
47k
1k
1k
KIA7805API
1SS355
10k
100
10V
10V
100
10V
10V
47k
1
50V
47p
1k
10k
10k
10k
0.001
0.001
1
50V
2.2k
10k
0.001
0.001
10k
47k
3.3k
10k
10k
1
50V
2.2k
1
50V
2.2k
4.7k
0.1
220
16V
16V
4.7k
1
50V
47k
3.3k
10k
1
50V
47k
100k
100k
1
50V
1k
1
50V
M62429P
0.001
0.001
1k
1 50V
0
2.2k
0
0.15
33k
33k
0.022
1k
2200
16V
47
25V
470
470
470
100
10V
10V
0.1
1SS355
1k
M62429P
0.001
1k
1
50V
1k
2.2k
0
33k
0.022
0
100k
0.22
1k
0.47
100k
0
18k
0.15
1
50V
18k
0.15
0.018
22 25V
10k
47 16V
10k
10k
1k
1SS355
220
25V
25V
1k
1k
100k
2SD1938
2SD1938
100k
2SD1938
2SD1938
1
50V
470
16V
16V
DTC114EKA
13P
8P
KIA78L05BP
KTA1273Y-AT
0.001
22k
1
50V
0
0
1DD355
1SS355
0.22F
5.5V
0
DTC343TK
DTC343TK
1 50V
DTA124EKA
DTC124EKA
DTA124EKA
DTC124EKA
1 50V
0.022
2.2k
1k
0.15
RB411D
RB411D
0
0
0
1
50V
2.2k
0
0.001
0.001
0
0
100k
100k
0.001
0.0022
0
0
0
47p
0.001
0
0.001
0.001
0.001
100p
3.3k
1k
0.001
100p
22k
47k
3.3k
0.001
100p
100p
100p
A1
A2
A3
A4
A5
A6
A7
C1
C2
C3
C4
C5
C
6
C
7
C8
C
9
C10
C11
C12
830
829
827
828
GND
HP.L
HP.R
∗
A-GND
AMP-MUTE
READY-H
D-GND
DIG 10V
DIG 10V
A-GND
READY 10V
WOFER
C
A-GND
A-GND
(2/3)
HEADPHONE AMP
FR
FL
P.CONT
SUB UNSW 5.6V
NC
MUTING
MUTING
MUTING
MUTING
Q305,306
MUTING CONTROL
SWITCH
MUTING CONTROL
SWITCH
Q312,313
G
I
O
+5V
REGULATOR
G
I
O
+5.6V REGULATOR
B+ SWITCH
B+ SWITCH
VDD
GND
VDD
GND
PRE AMP
PRE AMP
VDD
GND
MUTING
MUTING
ELECTRICAL
VOLUME
GND
VDD
FILTER
HIGH-PASS
FILTER
HIGH-PASS
GND
VDD
VDD
GND
FILTER
LOW-PASS
ELECTRICAL
VOLUME
(US)
(US)
(EXCEPT US)
(EXCEPT US)
(EXCEPT US)
NC
(US)
(EXCEPT US)
(US)
(EXCEPT US)
(US)
(EXCEPT US)
(US)
(EXCEPT US)
(US)
(EXCEPT US)
(US)
(EXCEPT US)
(US)
(EXCEPT US)
(US)
(EXCEPT US)
(US)
(EXCEPT US)
(US)
(EXCEPT US)
(US)
(EXCEPT US)
(EXC
EP
T U
S)
(E
XC
EPT
U
S
)
(U
S
)
(EXCEPT US)
(E
X
C
EPT
U
S
)
(EXCEPT US)
NC
∗ R810
0
100
(US)
(EXCEPT US)
µPC4570G2
µPC4570G2
(Page 13)
(Page 15)
(Page 21)
(Page 19)
(Page 19)
(Page 21)
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