DOWNLOAD Sharp QT-CD50H (serv.man3) Service Manual ↓ Size: 1.41 MB | Pages: 24 in PDF or view online for FREE

Model
QT-CD50H (serv.man3)
Pages
24
Size
1.41 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / Portable
File
qt-cd50h-sm3.pdf
Date
PREV: Sharp QT-CD50H (serv.man2) Service Manual

Sharp QT-CD50H (serv.man3) Service Manual ▷ View 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
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
7
9
8
C362 0.02
C322 0.02
C358 0.02
C359 0.02
10
T1.25A
L 250V
F801
QT-CD50
– 10 –
Figure 10 WIRING OF P.W.BOARD (3/3)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
1
2
3
4
5
6
M302
SLIDE
MOTOR
M301
SPIN
MOTOR
SW301
PICKUP
IN
6
1
1
2 3 4
8
7 6 5
BR
RD
OR
GR
BL
VL
GY
BK
BR
RD
RD
WH
OR
GR
BL
CD MOTOR PWB-K
CD SERVO PWB-A
LCD PWB-E
PICKUP UNIT
B R
R D ( R )
O R
Y L
G R
B L
V L
G Y
W H ( W )
B K
P K
PINK
BLACK
WHITE
GRAY
VIOLET
BLUE
GREEN
YELLOW
ORANGE
RED
BROWN
COLOR
TABLE
BR
CNS103
(NOT REPLACEMENT ITEM)
RD
OR
YL
GR
BL
6
5
4
3
2
1
CNS463
FROM VOLUME PWB
P7 11-A
SW1
DISC IN
1
8
1
1
2
5
1
8
1
5
1
FW101
16
16
FW101
1
16
1
R157
R156
R151
R185
R186
R187
R188
R150
R155
C163
C164
R149
R148
C160
R152
R161
R160
L103
C138
R103
C135
C170
CNP402
Q102
1 2 3 4 5 6
B
B
E
E
C
C
CNP101
VR101
FOCUS
ERROR
BALANCE
Q103
C137
C179
C136
L101
IC102
R126
C111
C112
C115
R111
R109
C113
C118
R112
C116
C102
C165
C166
C171
C162
C161
C158
C101
Q101
C131
C117
R108
R147
R158
R106
C175
R172
C177
X101
IC103
1
5
10
15
20
24
25
30
35
40
41
45
50
55
60
64
65
70
75
80
C150
C180
R174
R145
C148
C145
C178
R135
R128
C127
R119
C129
R122
R121
IC101
1
1
7
8
14
15
21
22
28
5
10
12
13
15
20
24
25
30
35
36
37
40
45
48
C142
C147
C140
C143
R132
C128
C130
C124
R115
C121
R131
C133
R130
R137
R170
C108
C109
L102
R181
1
2
4
6
8
10
12
14
16
E
B
C
3
5
7
9
11
13
15
R177
R179
R129
IC104
R184
R183
C157
C154
C156
C153
R163
C176
C141
R127
R134
R136
R124
R125
R120
C126
C125
R118
R117
C114
R113
C122
C120
C119
R116
C151
C149
R139
R138
R141
R182
C174
C173
R153
R144
R154
R175
R107
R180
R178
R176
R105
R104
C103
C104
C105
C106
R123
C172
C107
R102
C206
LCD201
LC201
1
19
5
10
15
20
32
33
35
40
45
50
51
52
55
60
64
25
30
SW204
R204
R281
C281
C202
C204
X201
R203
R201
SW205
SW201
SW202
D203
STOP
CUE/UP
SW203
REVIEW/DOWN
REPEAT
PLAY/PAUSE
1
2
LED201
3
4
5
6
7
8
9
10
R211
C201
C203
C205
R202
D210
R205
QT-CD50
Figure 11 SCHEMATIC DIAGRAM (3/5)
NOTES ON SCHEMATIC DIAGRAM can be found on page 14.
– 11 –
A
B
C
D
E
F
G
H
1
2
3
4
5
6
(CH)
(CH)
TO CD SERVO PWB
P13 10-A
CLK
5
1
MUTE
DISC IN
XLT
FOK
SGCK/CLK
GFS
RST
GND
SQS0
SENS
DATA
SCOR
8
1
15K
R202
15K
R203
15K
R201
33P
C201
2.2K
R204
0.01
C203
R211
5.6K
33P
C202
2MHz
X201
47K
R205
1N4148
D210
47/10
C204
10/16
C205
1N4148
D203
0.1
C206
100/10
C281
REPEAT
REVIEW/DOWN
CUE/UP
STOP
PLAY/PAUSE
SW201
SW202
SW203
SW204
SW205
IC201
CXP1042Q
SYSTEM
MICROCOMPUTER
R281
560
LED201
LCD PWB-E
TO CD SERVO PWB
P13 11-A
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
MUTE2
BATT-W
SEG16
SEG17
COM3
SEG0
XLT
MODE
SQCK/CLK
GFS
SYNC-IN
BATT-E
DISC-IN
K13
K12
K11
K10
FOK
MUTE
SUBQ
SENS
DATA
SCOR
51
64
63
61
60
62
58 59
57
56
55
54
52 53
48
47
46
45
43
44
42
41
39
40
37
38
35
36
34
33
50
49
15
16
13
14
11
10
12
31
32
29
30
27
28
25
26
23
24
21
22
19
20
17
18
9
8
7
6
5
4
3
2
1
D-PT
KS0
KS1
KS2
KS3
VSS
RS2
NC
RS3
RS1
RS0
SEG18
VDD
COM2
COM1
COM0
VLC1
VLC2
VLC3
VL
C4M
RST
RMC
LCD201
LCD DISPLAY
10
9
8
7
6
5
4
3
2
1
QT-CD50
Figure 12 SCHEMATIC DIAGRAM (4/5)
NOTES ON SCHEMATIC DIAGRAM can be found on page 14.
A
B
C
D
E
F
G
H
1
2
3
4
5
6
– 12 –
FE_BIAS
CD SERVO PWB-A
SERVO AMP.
/SPIN/SLIDE DRIVER
FOCUS/TRACKING
TRK+
TRK–
FCS–
FCS+
PD
VR
LD
GND
F
C
B
A
D
E
VCC
VC
L. SW
L. SW
SL–
SL+
SP–
SP+
1
6
SL_P
IA_O
SL_M
SL_O
ISET
VCC
CLK
DATA
XLT
XRST
SENS
PHD
LD
RF_M
RF_1
RF_0
C8
CP
CC1
FOK
CC2
VC
TDFCT
TZC
ATSC
TEI
LPF1
TEO
VEE
EI
E
F
C.OUT
TA_
FSET
TG2
TGU
SRCH
FE_M
FE_O
FLB
FGD
FDFCT
FE1
FE0
MUTE
VREG-OUT
GND-2
IN2-2
IN2-1
GND-1
IN1-2
IN1-1
OP-OUT
OUT2-1
OUT2-2
VREG-8
OUT1-2
OUT1-1
GND-3
OUT4-1
OUT4-2
IN4-1
IN4-2
VREF-IN
VCC-2
VCC-1
IN3-2
IN3-1
OUT3-2
OUT3-1
OP-IN1
OP-IN2
+B
+B
10/10
C129
4
C
0.022
C119
0.01
C108
1K
R108
510K
R120
C
18K
R127
0.1
C136
0.047
C135
470/16
C169
220/10
C137
0.04
C179
5.6K
R126
0.01
C175
2P
C104
12K
R105
8.2
R12
82
R1
220K
R123
0.033
C107
1
1
2
CNP101
FW101
8
7
6
5
4
3
9
10
16
16
1
16
15
14
13
12
11
6
5
4
3
2
CNS103
1
3.3/50
C128
15K
R122
330K
R121
0.0047
C118
330K
R113
470K
R112
0.047
C115
0.001
C116
100/10
C117
4.7/50
C124
27K
R115
3.9K
R116
0.1
C121
0.1
C120
0.1
C122
680K
R117
150K
R118
0.033
C125
82K
R119
4.7K
R107
51K
R103
10
R102
100/10
C101
SS9012 H
Q101
10K
R104
Q102
SS9012 H
0.001
C102
50K(B)
VR101
R176  47K
R177  47K
R178  47K
R179  47K
0.01
C112
0.01
C111
150K
R111
100K
R109
TP3
0.022
C113
0.1
C114
0.033
C109
0.01
C105
12P
C103
10K
R106
CXA1782BQ
IC101
36 35
PHD1
PHD2
36 35
34 33 32 31 30 29
25
26
27
28
8
12
11
10
7
6
5
4
3
2
1
48
47
46
45
44
43
42
41
40
39
38
37
22   
23
24
21
17
18
19
20
16
15
14
13
10
R129
SS9012 H
Q103
C133
0.002
15K
R131
2.2K
R130
KA9258D
IC102
8
14 13 12
10
9
7 6 5 4 3 2 1
21
15 16 17 18 19 20
22 23 24 25 26 27 28
9
11
FOCUS 
BALANCE
ERROR
TP6
TP5
150K
R180
150K
R181
TP2
FOCUS
1
2
8
7
6
5
4
3
16
15
9
10
11
12
13
14
PICKUP UNIT
MD
LD
SHORTLAND
TRACKING
CD MOTOR PWB-J
NOT REPLACEMENT 
ITEM
–
+
+
–
SW301
PICKUP IN
6
5
4
3
2
1
M101
SPIN
MOTOR
M
M102
SLIDE
MOTOR
M
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