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Sharp SM-SX1 Service Manual page 15

1-bit amplifier
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P18 1-C
P18 1-A
TO 1BIT AMP.
TO 1BIT AMP.
PWB
PWB
CNWAM2A
CNWAM1A
CNP303
CNP304
5
1
2
3
4
6
1
2
3
ME
5
4
3
2
1
0
+B
R363
C349
Q313
390
220P
2SA1036KR
R361
100
Q315
2SA1036KR
D
D
2
6
R359
S
S
Q321
R371
1M
820
2SK389BL
R365
Q323
390
2SJ109BL
C353
S
S
0.0047
2
6
C347
D
D
0.0047
Q317
2SC2412KR
Q319
C351
2SC2412KR
10/25
R367
390
Q310
-B
2SA1037KR
C340
R350
R349
0.01
10K
82K
-B
1
C339
R346
0.1
02K
4.7K
4
R347
3
R351
+
4.7K
1
02K
100K
2
D323
R353
DAN202K
10K
5
+
1
7
6
8
+B
IC307
C342
0.01
NJM4558M
MOTOR DRIVE
7
P19 12-C
P19 12-A
TO 1BIT AMP.
TO 1BIT AMP.
PWB
PWB
CNWAM3A
CNSA4
CNP306
CNP305
4
5
4
3
2
1
4
3
L301
220µH
L302
220µH
L303
220µH
+B
-B
+B
-B
+B
+B
+B
R382
8.2K
R383
8.2K
D
S
+B
S
+B
+B
D
TP77
+B
R355
100K
R356
4.7K
+B
+B
+B
8
Figure 15 SCHEMATIC DIAGRAM (2/10)
2
1
R307
RLY303
0.1
+B
1
2
+B
+B
8
5
+B
+B
7
4
D303
DAN202K
+B
C302
0.1
+B
+B
+B
R310
1.5K
-B
R311
1.5K
1
R313
1K
D325
1SR154
D324
1SR154
IC302: CD/CD CONVERTER
+B
D304
20E4FD
2
MTZJ160A
THY301
SF3G48
1
3
+B
9
IC302
TZ0775AF
3
6
7
+B
Q309
2SD2394F
R329
R316
3.3K
2.7K
R330
0.2
+B
1
3
1
2
IC306
R331
2
3.3K
C313
NJM431U
10/25
+B
Q306
2SC3242
+B
+B
+B
+B
+B
Q307
2SC3242
C317
100/16
C321
C323
+B
0.01
10/25
+10V
1
D328
DAN202K
IC305
NJM79M12
–10V
-B
1
2
C322
3
C324
C326
0.01
10/25
33/35
TP104
IC304: -12V VOLTAGE
REGULATOR
ZD304
HZ5BLL
9
10
– 15 –
+24V
+B
Q303
2SC2412KR
R309
R308
2.7K
100K
+B
Q304
D326
R390
2SD2394F
1SR154
4.7
-B
D327
1SR154
R312
1K
3
IC301
2
NJM431U
REGULATOR
–24V
R391
2.2
+B
+B
C306
R314
47/20
C307
22
0.01
ZD301
R392
0.7
R315
1K
2
R317
470K
1
5
4
8
C312
0.22
IC303
R393
D306
NJM78M05
1SR154
2.2
+B
3
D305
1SR154
C314
10/25
D308
1SR154
D307
1SR154
D311
IC304
1SR154
NJM78M12
R396
D310
D312
3
8.2
1SR154
1SR154
C356
2
C325
C327
KZ1250
33/35
0.01
D314
C328
1SR154
0.01
CHASSIS
R397
D313
D315
GROUND
8.2
1SR154
1SR154
R323
R324
22K
22K
R325
22K
+B
+B
+B
R326
R327
22K
6.8K
CNP302
1
2
3
CNS302A
2
3
1
CORE
CNS302C
8
7
6
5
4
3
2
1
UNT2
FROM AC/DC CONVERTER
P22 4-E
11
SM-SX1/SX1W
+B
+B
+B
+B
6
5
4
3
2
1
CNS302B
UNT1
P22 4-E
12

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