Read Sharp QT-CD50H (serv.man3) Service Manual online
QT-CD50
Figure 9 SCHEMATIC DIAGRAM (2/5)
– 9 –
7
8
9
10
11
12
(ML)
(ML)
(ML)
(ML)
+B
POWER MUTE
1K
R601
1K
R602
1/10
C602
1/10
C621
4.7K
R604
100K
R621
4.7K
R603
2SC1815 GR
Q602
2SC1815 GR
Q601
1/10
C601
+B
+B
1
6
1
6
1N4148
D401
1N4148
D405
10K
R448
10K
R445
10K
R467
47/10
C442
C483
0.039
(ML)
ON
OFF
ON
OFF
SW402B
X-BASS
SW402A
X-BASS
+B
POWER AMP.
3
6
EARPHONE
PWB-G2
5
4
2
3
3
R609
120
J601
R610
120
EARPHONE
/FUNCTION
CNP453
CNS453
POWER
ON-CD
ON-FM ST
ON-FM MONO
-TAPE
STAND-BY
SW602-D
MOTOR
TAPE
TAPE MAIN
SW401
2
1
M401
M
4
3
+
–
–
–
+
+
4
3
2
1
2
REGURATOR
VOLTAGE
KIA7808PI
IC602
1
+B
+B
STAND-BY
-TAPE
+B
/FUNCTION
POWER
ON-FM ST
ON-CD
ON-FM MONO
SW602-C
+B
+B
TO CD SERVO PWB
P13 12-G
CNP402
CNS463 6
1
1
6
2
4 3
5
POWER SUPPLY PWB - D
R20 or HP-2 battery x 8]
DC12V [ "D" size (UM/SUM-1,
1N4148
D402
LA4597
IC601
R-CH
L-CH
8ohm SPEAKER
8ohm SPEAKER
F. S.
T801
POWER
TRANSFORMER
D801 – D804 : 1N4004
SP2
SP1
3
2
CNS604
1
SO801
AC POWER
SUPPLY SOCKET
AC 120V 60Hz
C802
0.02
C801
0.02
D802
D801
D804
D803
0.02
C804
0.02
C803
2
CNP681
1
2
CNS681
1
3
2
CNP604
1
15K
R464
15K
R463
1.8K
R462
1.8K
R461
6.8K
R446
1N4148
D407
100/25
C481
3
0.1
C629
0.1
C630
1N4148
D601
2200/25
C628
2200/25
C627
0.02
C626
1000/10
C611
1000/10
C612
0.1
C610
0.1
C609
100/10
C608
100/10
C607
13
12
11
9
10
8
5
220/25
C622
0.001
C604
2
C606
100/10
C605
100/10
0.001
C603
7
1
4
10/10
C444
100
R442
1N4148
D406
6.8K
R443
1N4148
D409
1N4148
D408
1N4148
D403
47/10
C443
10K
R444
20K(B)
VOLUME
VR402A
2.2K
R409
0.0033
(ML)
C417
C415
0.1/50
3.3K
R425
20K(B)
VR402B
VOLUME
0.0033
(ML)
C418
C416
0.1/50
3.3K
R426
22K
R466
C482
0.039
(ML)
2.2K
R410
22K
R465
1K
R318
(PP)
PLL FM MPX.
TUNER PWB-B
+B
1N4148
D305
470
R316
ND
(ML)
(ML)
0.056
C351
(ML)
(ML)
(ML)
0.02
C317
0.04
C318
0.02
C319
3
2
1
+B
FM DET.
+B
0.001
C335
+B
150
R321
+B
GND
RA +B
RA MO +B
R-CH
GND
L-CH
IN
FM IF
IN
AM IF
UAO
GND2
100
R322
0.001
C381
F
1
Hz
TA7343AP
IC302
1/50
C332
0.056
C352
1.5K
R352
1/50
C354
15K
R354
3.3K
R356
0.015
C356
1.5K
R351
1/50
C353
15K
R353
3.3K
R355
0.015
C355
1/50
C331
0.02
C339
100/10
C336
10K(B)
VR301
VCO
1/50
C334
3.3/10
C333
220K
R317
6.8K
R319
2.2K
R320
6
3
9
8
4
5
2
1
7
100/10
C330
0.04
C314
100K
R306
150K
R307
1K
R309
0.001
C313
T303
6.8K
R315
FM IF
CF302
10.7MHz
CF302
10.7MHz
7
9
8
C362 0.02
C322 0.02
C358 0.02
C359 0.02
10
T1.25A
L 250V
L 250V
F801
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