Schematic Diagram - Sharp QT-CD180(BL) Service Manual

QT-CD180
PICKUP UNIT
LD
MON
A
K
E
K
B
5
E
4
A A
3
F
0.0022
B
2
C
F
1
1M
0.0022
R+
1M
TR+ 1
R–
2
F+
FO+
3
F–
4
G
FO– 5
B
PD
6
VR
TR–
7
LD
8
+
M702
M
SPINDLE
MOTOR
–
SP+
6
SP–
5
+ SL+
M701
4
M
SLED
SL–
MOTOR 3
–
PU-IN
2
PU-IN GND
SW702 1
PICKUP IN
C
CD MOTOR PWB-B
IC803
PIN PIN
VOLTAGE VOLTAGE
NO. NO.
1 3.8V 15 0.9V
2 3.6V 16 0.9V
3 2.1V 17 3.8V
2.1V 3.8V
4 18
5 0V 19 2.1V
6 1.7V 20 2.1V
7 8.3V 21 8.3V
D
0V 8.3V
8 22
9 2.1V 23 2.1V
10 2.1V 24 2.1V
11 3.8V 25 2.1V
12 3.8V 26 3.8V
13 0V 27 3.8V
14 7.7V 28 0V
fH TC3
AM
TRACKING
fL L3
AM BAND fH TC4
COVERAGE
fL L4
fH TC1
FM
E
TRACKING
fL L1
FM BAND fH TC2
COVERAGE
fL L2
FM ROD
ANTENNA
IC1
PIN PIN
VOLTAGE VOLTAGE
F
NO. NO.
1 0.82V(0V) 13 1.22V(1.22V)
0V(0V)
2 14 1.22V(1.22V)
3 0.35V(1.03V) 15 3.20V(3.14V)
4 3.81V(3.82V) 16 3.14V(3.92V)
5 0V(0.13V) 17 0.7V(0.70V)
3.92V(3.86V)
6 18 1.08V(1.01V)
7 3.39V(3.18V) 19 0.4V(1.02V)
8 3.92V(3.86V) 20 3.92V(3.85V)
9 0V(0V) 21 3.92V(3.86V)
0V(0.14V)
10 22 3.92V(3.86V)
11 0.32V(0.32V) 23
3.92V(3.86V)
12 3.14V(3.29V) 24 3.92V(3.82V)
( ): AM
G
TAPE
RECORD/
PLAYBACK HEAD
L-CH
R-CH
ERASE HEAD
H
• The numbers 1 to 17
1
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( ): CD STOP SWITCHING
3.72V(5.0V)
1.87V(1.45V)
R801
22 C817
100/10
2.97V
(4.39V)
R802
2.2K
+B
K
C801
5 5
0.01
E
4 4
A
3 3
B
2
2
F
1 1
TR+
1 1
TR–
2 2
FC+
3 3
FC–
4 4
GND
5 5
PD
6 6
VR
7 7
LD
8 8
DM+
6 6
DM–
5 5
FM+
4 4
FM–
3 3
SLT+ +B
2 2
SLT–
1 1
R853
2.2K
28 27 26 25 24 23 22
IC803
1 2 3 4 5 6 7 8 9 10 11 12 13 14
R852
2.2K
IC803
R851
2.2K
FOCUS/TRACKING/
SPIN/SLED DRIVER
MM1469XH
L3
TC3
AM BAR
VC3
ANTENNA
AM OSC.
AM ANT.
FM ANT.
FM OSC.
VC1
TC1
C21
C2
2P(CH) C3
18P(CH)
22P
(UJ)
L1
L2
FM RF
FM
OSC.
FM BAND
24 23 22
BASS
FILTER AMRF IN FMRF RF
OUT
VCC
F1
AM
MIX
AGC
OUT
3
1 2
2 4 5
1 3
D1
1N4148
T3
IC1
FM/AM IF MPX.
TA2111N
AM IF
R105
10K
R104
R103
C105
12K
12K
0.0027
R109
SW102
120
R102
RECORD/
R101
150
PLAYBACK
150
SW102-A SW102-G
R107
R R P
P
1K
3 2 1 19 20 21
C107
820P
C111
1 1
330P
2 2
C112
3 3
330P
C108
R108
4 4
820P
1K
16 17 18
R110
6 5 4
R P
120
R P
SW102-F
SW102-B
9 8 7
C106
0.0027
R P
SW102-C
SW102
RECORD/
R106
PLAYBACK
10K
are waveform numbers shown in page 16.
2 3
Figure 12 SCHEMATIC DIAGRAM (1/2)
+B
IC801
SERVO PRE AMP.
C815 C816
47/16 0.022
TA2109F
IC801
R804
68K
1 VCC RFN 24
R805
39K
R807
GND 23
1K
8
R806
FNI
2
2.7K
3 FPI 22
RFO
C820 C818
TPI
4
0.1(ML) 56P
5 TNI AGCI 21
MDI RFGC
6 20
LDO RFGO
7 19
9
C819
RFIS 18
0.1(ML)
RFRP
8 SEL 17
10
TEB VRO
9 16
10 FEN 15
2VRO
R803
C821
11
TEN
82K
100/10
FEO
14
TEO SBAD
12 13
C813 C814
47/16 0.047
+B
FOO
TRO
FMO
2
3
21 20 19 18 17 16 15
+B
C806
C856
330/16
0.001
DMO
AM OSC.
TC4
L4
VC4
VC2
TC2
C4
4P(CH)
C6
330P
C7
R2
2.2/50
2.7K
21 20 19 18 17 16 15 14 13
FM DET MPX LPF1 LPF2
AM FM
OSC IN AM/FM VCO
OSC AFC
FM IF
AM IF IN
VCC IN
6 IC1 9 10 11 12
7 8
TA2111N
2 2
AM IF T2
CF1
10.7M
FM IF
1 3 3 1
CF3
FM
460kHz
DETECTION
C115
R113
R117
0.018(ML)
8.2K
3.9K
SW102-H
R115
C109 R
C113
3.9K
270P
47/16 22 23 24
3 0.6V 1 4.67V
0V OUT1 8
NF1
VCC
5
IN1
IC101
4.62V
10
FILTER
BA3311L
C123
0V
0V
220/10
IN2
ALC T
NC 2
9
NF2 0V GND OUT2
R125
0V 0V 1.89V
0.6V 11 4 6 7 12 680K
C114
C118
C110 13 14 15
47/16
10/16
270P R
SW102-E
R114
R116 R118
C116
8.2K
3.9K 3.9K
0.018
(ML)
4
– 12 –
C825
47/16
C826
+B 47P
L802
0.82µH
R827
15K
C832
47/16
C829
0.0047
0.033(ML)
C863
47/16
C854
0.0068
C841
0.047
C842
0.047
C834
470P
C835 470P
C843
47/16
C836 0.047(ML)
C837 0.047(ML)
C838 0.047(ML)
C839 0.047(ML)
+B
+B
SWITCHING
Q802
KTA1273 Y
8.15V 8.21V(8.3V)
(8.3V)
D801
1N4004
7.48V(7.59V)
R850
( ): CD STOP
1.5K
4.97V(5.0V) +B
3
0V(0V)
2
Q803
1
KRC107 M
0V(0V)
R456
39K
R455
39K
R7
120
R6 COR1
C22
100 CORE
0.1/50
TAPE
11
SW201-B
AM 10
12
FM 9
CD 8
SW201
FANCTION
TAPE 14
SELECTOR
AM 15
13
FM 16
CD 17 SW201-C
R121
1.8K
SW102
P
RECORD/
PLAYBACK
R126
100
IC101
SW102-D
REC/P.B.
R
12 11 10
EQUALIZER AMP.
R351
BA3311L
100
L301
P
0.022(ML)
SW102
RECORD/
PLAYBACK
C351 BIAS OSC.
R122
0.0022
1.8K
C352
(ML)
100/10
5 6
C8
0.015
C830
0.01(ML)
C828
0.0027
R828
10K
C833
R812
1K
R829
3.3K
R
1
R831
3.3K
R
3
R833
3.3K
R
3
X8
16
C845
0.047
+B
L-CH
R-CH
SW102
P
RECOR
PLAYB
C354
R352
150
0