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

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