Sharp QT-90W Service Manual page 11

LINE
S301-C
FM(MONO)/BEAT
L-CH
FM(ST)
S301
TAPE
FUNCTION/
(STAND-BY)
BEAT CANCEL
S301
FUNCTION/
BEAT CANCEL
LINE
FM(MONO)/BEAT
FM(ST)
S301-D
TAPE
(STAND-BY)
L OUT
R OUT
L IN C345 R352
0.022(ML) 1.2K
R IN
C346 R353
0.022(ML)
1.2K
1 2 3 6
4 5 7
CON301
1 2 3 4 5 6 7 CN301
GRAPHIC EQUALIZER
1 7
PWB-B
VR301
R329 R335
X-BASS 12K
8.2K
VR302A
VR301A
100K(B)
100K(B) C329
C331
0.0027
560P
R327
R331
R333 R337
22K
R355
12K
8.2K
8.2K
18K
C333 C335
0.0068 0.0015
VR302,VR303 GRAPHIC EQUALIZER
C334 C336
0.0068 0.0015
R354
R332 R334 R338
18K
R328
12K 8.2K 8.2K
22K
C330 C332
VR301B 0.0027 560P
VR302B
100K(B)
100K(B)
R324 VR301
R330 R336
39K
X-BASS 12K 8.2K
MOTOR
CONTROL
4
Q604
3
3DA8050
+12V
+B
2
R613
1
560
7 8
All manuals and user guides at all-guides.com
IC301
SURROUND EFFECT CONTROL
BA4558
4
3
L-CH
C301 (1/2) 1
1/50
2 R313
R310
2.2K
IC301
12K
R308
R306 R350
12K
2.2K 10K
C305
C307
0.0033
4.7/50
(ML)
C306 C310
C308
0.0033 100/16
4.7/50
(ML)
R351
R307 R309
10K
2.2K 12K
IC301
R311
R312
12K
6
2.2K
(2/2)
7
R-CH
5
8
C302
1/50
C309
R416
47/16
330
C311
220/16
C314
0.15(ML)
R359
C315
5.6K
0.001(ML)
C312
0.001(ML)
R349
560
C342 R343
47/16 2.7K
C339
POWER AMP.
1/50
R341
680K
4.7/50
Q305
L IN
2SC945
R401
C347
VOLUME
1K
330P
CONTROL
C348
330P
Q306
2SC945
R422
R342 2.2K
C340
680K
1/50
R344
2.7K
R404
VR303A
4.7/50
1K
R IN
100K(B)
R339
2.7K
R420
2.2K
R428
33K
R340
2.7K
VR303B
100K(B)
+B
Q603
+B
SS8550
+B
Q602
REGULATOR
R612
+15V DC
SS8550
2.2
Fusible
R603
R610
22K
1K
LINE
S301-A
FM(MONO)/BEAT
FM(ST)
S301
FUNCTION/
TAPE(STAND-BY)
BEAT CANCEL
9
Figure 11 SCHEMATIC DIAGRAM (2/2)
– 11 –
FM SIGNAL
PLAYBACK SIGNAL
SURROUND
LEVEL METER. & SURROUND INDICATER
PWB-A5
R503
120
SURROUND
CONTROL
C502 Q501
10/16 2SC945
R-CH
R507
D501
10K
1N4148
C313
0.15(ML)
R358
VOLUME
5.6K
PWB-A4
4 4
L OUT
7 6
VR304-A
R IN
2 2
3 3
1 1
VR304-B
R OUT
6 7
L IN
5 5
IC401
BA5415A
+B
C405
0.1
6 1
C407
C401 47/25
3
C409
5
1000/16
R405
2
150
4
C417
C403
100/25
IC401
47/16
7
9
R406
11
C404
33
47/16
8 C410
10 1000/16
R402
C408
1K
47/25
12
C406
0.1
IC402
+B
BA5415A
POWER AMP.
+B
C426
0.1
6
1
C429
C421
47/25
3
C411
5
1000/16
R425
2
150
4
C424
C422
100/25
47/25 IC402
7
9
R424
C423 11
33
47/25
8 C412
1000/16
10
R423
C428
1K
47/25
12
C427
0.1
+B
F601
T2.5A L 250V
+B +B
+B +B
10
QT-90W
MW/SW1/SW2 SIGNAL
RECORD SIGNAL
IC501
LB1403N
9 8 7 6 5 4 3 2 1
R502
120
SW501
SURROUND
OFF
OFF
R506
470
LD508
CSL-326G3GTH
ON
ON
LD507
CSL-326G3GTH
1
5
2 3 4 5 CN501
1
CON501
1 2 3 4 5
Q301
C316
R305
2SC945
0.047(ML)
470K
R317
R316
C317
2.2K
120
4.7/50
SP501
SURROUND
L-CH
VR304
50K(B)
VOLUME
SP502
L-CH
SPEAKERS
16 OHMS
SP503
R-CH
SP504
2 2
SURROUND
R-CH
1 1
2 1
CN402A
CN402
2 1
3
3 3
2 2
1
1
1
R407
150
R408
150
HEADPHONES
PWB-A3
S501
VOLTAGE SELECTOR
AC 220-240 V
AC 110-127 V
T501
POWER
TRANSFORMER
AC POWER
SUPPLY
CORD
AC 110-127 V/
220-240 V,
50/60 Hz
0V
BATTERIES
DC 15 V [ "D" SIZE
(UM/SUM-1, R20 or
2 2
HP-2)BATTERY x 8 ]
1
1
BATTERIES
BATTERY
DC 15 V [ "D" SIZE
(UM/SUM-1, R20 or
PWB-A6
HP-2)BATTERY x 2 ]
11 12