Read Sharp QT-CD180 (serv.man4) Service Manual online
QT-CD180H/QT-CD180W
– 15 –
Figure 15 SCHEMATIC DIAGRAM (2/2)
7
8
9
10
11
12
• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.
12
13
5
7
6
1
11
15
14
4
17
16
VOLUME
OPEN/CLOSE
RECORD SIGNAL
PLAYBACK SIGNAL
CD SIGNAL
FM SIGNAL
AM SIGNAL
50
51
52
53
1.50V
0V
2.10V
2.10V
4.98V
2.10V
2.10V
2.73V(1.15V)
2.30V(2.1V)
2.94V(0.989V)
2.14V
2.14V
2.18V
2.18V
2.11V
2.10V
2.14V
2.10V
2.10V
2.17V
4.18V
2.47V(0V)
4.97V
0V
0V
2.08V
2.57V
4.92V
0V
2.48V
2.37V
98
99
2.33V
0V
0V
0.56V
0V
0V
0.56V
8.35V
8.02V
4.27V
8.01V
9.05V
4.33V
4.67V
0V
5.08V
9.05V
8.44V
8.44V
4.96V
4.39V
0V
3.32V
0.68V
V)
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
( ): STOP
SW651
VOLTAGE
SELECTOR
AC220-240V
AC110-127V
SO651
AC INPUT SOCKET
AC110V-127V/
220V-240V,
50/60Hz
AC INPUT SOCKET
AC110V-127V/
220V-240V,
50/60Hz
T651
POWER
TRANSFORMER
AC/DC SELECTOR
AC INPUT
FOR QT-CD180W
5
1
5
1
4
2
3
F651
T1.25A L
250V
For Philippines;
AC220V,60Hz
Except for Philippines;
AC230-240V,50Hz
AC220V,60Hz
Except for Philippines;
AC230-240V,50Hz
FOR QT-CD180H
AC/DC SELECTOR
ON
ON
OFF
OFF
8
7
6
5
4
3
2
1
9
8
7
11
10
13
14
12
6
5
4
3
2
1
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
55
56
57
58
59
60
61
62
63
64
64
65
66
67
68
69
70
71
71
72
73
74
75
75
76
77
78
79
80
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
8
7
6
6
5
4
3
2
1
1
FM
AM
R-CH
L-CH
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
POWER PWB-A4
GND(AUDIO)
GND(POWER)
GND(CD)
SPEAKERS
+5V(CD)
–
+
TAPE
AM
FM
CD
FM
CD
CD
FM
AM
TAPE
AC INPUT
–
–
+
+
VOLUME
R
TAPE
AM
FM
CD
FM
CD
CD
TAPE
PUSEL2
DISPLAY
TRAY CLOSE
MVSS1
MVDD1
CDSEL0
SEG1
COM1
MVDD
MVSS
MXI
MXQ
REMO-IN
RYNCREC
RESET
DVSL
LO
DVRL
DVDD
DVRR
RO
DVSR
TEST0
SPCK
SPDA
COFS
DOUT
SBSY
SBOK
VDD1
VSS1
P2VREF
PDO
TMAX
LPFN
LPFO
PVREF
VCOF
AVSS
SLCO
RFI
AVDD
RFCT
RFZI
RFRP
FEI
SBAD
TEI
TEZI
FOO
TRO
VREF
RFGC
TEBC
FMO
DMO
2VREF
SEL
VDD2
VSS2
XI
XO
XVDD
XVDD
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
DOOR IN
DOOR OUT
ADIN1
ADIN2
MUTE
PU IN
TEST1
TEST2
TEST3
TEST4
TEST5
/HSO
CDSEL1
TRAY OPEN
PUSEL0
PUSEL1
XVSS
COM2
COM3
COM4
NC
NC
CD CONTROL PWB-A3
6
2
3
4
5
10
1
10
1
19
23
22
21
20
13
17
16
15
14
12
8
9
10
11
M
1
2
2
2
1
1
2
3
1
2
3
12 11 10
P
REGULATOR
SW201-A
VOLUME
PWB-A2
–
+
–
+
SW201-D
REGULATOR
RECORDING
BIAS OSCILATOR
SW102-D
SW201-B
SW201-C
MAIN PWB-A1
BIAS OSC.
BATTERY
DC 9V[ "D" SIZE
(UM/SUM-1,R20 OR HP-2)
BATTERY x 6]
R-CH
4 OHM
L-CH
4 OHM
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
0V
0V
0V
0V
4.98V
0V
0V
0V
0V
4.98V
0V
4.98V
4.98V
0V
4.97V
0V
0V
0V
0V
0V
0V
0V
0V
0V
4.97V
2.49V
0.43V(2.36V)
1.66V
2.46V
0V
4.97V(0V)
4.98V
0V
4.18V
2.10V
2.08V(0V)
2.10V(1.34V)
2.01V(4.12V)
2.10V
82
83
4.72V
84
2.36V
2.47V
0V
0V
0V
4.95V
0V
4.96V
4.96V
0.30V
0V
4.96V
2.33V
2.33V
2.33V
HEADPHONES
PWB-A5
PWB-A5
5
1
5
1
X-BASS PWB-A6
1
3
2
6
7
4
4
5
2
C352
100/10
L301
C354
0.022(ML)
R351
100
R352
150
C353
0.0056(ML)
R353
33K
R354
4.7
Q351
KTC3199 GR
SW201
FANCTION
SELECTOR
Q204
KTA1046 Y
D202
1N4148
Q205
KTC3199 GR
R203 560
C204 0.022
ZD201
DZ5.1BSB
C203 0.01
C202
47/16
D203
1N4148
R201
2.2K
R202 4.7K
D201
1N4148
C218
0.0015
R220
2.7K
C241 47/16
VR201-B
20K(B)
C216
0.15/50
C222 0.001
C220
0.039(ML)
C236 100/10
R232 120
R231 120
C225 100/10
VR201-A
20K(B)
C217
0.0015
R219
2.7K
R221
1K
C221 0.001
C219
0.039
(ML)
C235 100/10
C226
0.022
C227
2200/16
C234
470/10
C238
100/10
C240
0.15
(ML)
C239
0.15(ML)
C237 100/10
C233
470/10
CNP201
CNS201
CNS602
CNP602
C652 0.022
D653
1N4004
D654 1N4004
C654 0.022
D652
1N4004
D651
1N4004
C653 0.022
C651 0.022
T651
POWER
TRANSFORMER
SP202
FW806
LCD801
LCD DISPLAY
R848
2.2K
R849
6.8K
R847
1K
SW804
TRACK UP/
CUE
SW803
TRACK
DOWN/
REVIEW
SW802
STOP
SW801
PLAY/
PAUSE
R846 330
R844
3.3K
R862
22K
C824
0.022
R861
3.3K
R843
3.3K
R821
22K
C823
0.022
R824
10K
R826 220K
R820 47K
R827
15K
C830
0.01(ML)
C829
0.0047
C828
0.0027
R828
10K
C833
0.033(ML)
C854
0.0068
R812
1K
R830
10K
R829
3.3K
R831
3.3K
R833
3.3K
R834
3.3K
R832
3.3K
C840
0.047
X801
16.93MHz
16.93MHz
R840
10
C845
0.047
7(ML)
7(ML)
P
7(ML)
7(ML)
R860
100
C857
0.01
C844
100/10
C853
0.022
R836 270
C852 3.3/50
C850 0.0022
C849 0.0022
R835 270
C851 3.3/50
R837
10K
R838
10K
C848 22/16
C847
22/16
C846
1/50
R839
47K
C855
0.022
IC802
SERVO/
SIGNAL
CONTROL
TC9457F0
D801
N4004
R456
39K
R455
39K
L801
0.82
µ
H
R215
2.2K
R216
2.2K
R210
33K
R211 33K
SW810
CD LID
826
7P
C825
47/16
C827
0.015(ML)
C215
0.15/50
R222
1K
IC201
POWER
AMP.
TA8227P
SW201
FANCTION
SELECTOR
SW102
RECORD/
PLAYBACK
SW201
FUNCTION
SELECTOR
SW601
TAPE
MAIN
M601
TAPE
MOTOR
SP201
SO651
AC INPUT
SOCKET
AC INPUT
SOCKET
C213
0.1/50
R217
22K
SW302-A
X-BASS
C303
0.22/50
R302
2.7K
C214
0.1/50
C304
0.22/50
R304
2.7K
SW302-B
X-BASS
HPJ201
HEADPHONES
HEADPHONES
R227
120
120
R226
120
120
CFW302
CFW202
R218
22K
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