Schematic Diagram/Wiring Side Of P.w.board - Sharp MD-R3 Service Manual

MD-R3
VCC
A
1/2VCC
E
–
+
A
–
+
B
–
+
F
–
+
C
–
+
LD
MON
B
LD GND
LTOH41M
HOE-LD-PD
ACTUATOR
FO–
FO+
TR+
TR–
PICKUP UNIT
C
IC750
21 2.3V
PIN
VOLTAGE
NO.
22 2.3V(2.6V)
1 2.3V 23 2.3V(2.4V)
2 2.3V 24 0V
3 2.3V 25 2.3V
4 2.3V 26 2.3V
5 2.3V 27 0V(5V)
6 5V(3.2V) 28 5V(5V)
7 0V(0.2V) 29 0V(5V)
D
8 2.3V 30 5V(5V)
9 2.3V 31 5V(130mA)
10 2.3V 32 5V(5V)
11 2.3V 33 5V(4.7V)
12 2.3V 34 2.3V
13 2.3V 35 0.7V
14 2.3V 36 5V
15 2.3V 37 1.7V(2.8V)
16 2.3V 38 1.7V(3.5V)
17 2.3V 39 5V(0V)
18 2.3V 40 2.3V
19 2.3V 41 2.4V(3.5V)
20 2.3V 42 2.3V
( ):PLAYBACK
E :STOP
F
+
M702
M
SPINDLE
–
MOTOR
+
M701
M
SLED
–
MOTOR
SW702
PU-IN
G
CD MOTOR PWB-G
H
The numbers 1 to 10
1
VCC
7 7 7 7
1/2VCC
6 6 6 6
E
5 5 5 5
A
4 4 4 4
B
3 3 3 3
F
2 2 2 2
C
1 1 1 1
VR1A
(1K) CNP752
LD
LD
8 8 8 8
R754
VR
VR
7 7 7 7 47
PD
MON
6 6 6 6
GND
GND
5 5 5 5
F– FO–
4 4 4 4
FO+
F+
3 3 3 3
TR+
T+
2 2 2 2
T– TR–
1 1 1 1
CNP751
IC700
PIN
VOLTAGE
NO.
1 3.5V(3.1V)
1
2 3.5V(3.9V)
TG2
2
3 2.3V(2.6V)
HF
3
4 2.3V
TG1
4
5
0V
FG2
5
6
1.6V
1/2Vcc
6
7
5V(0V)
TP751
8
0V C756
0.0082
9
2.3V
10 2.3V
11 3.5V
12 3.5V
13
0V
14
2.3V(2.2V)
15
2V(2.2V)
16
2V(2.2V)
17
3.5V(3.8V)
18 3.5V(3.2V)
19 2.3V(2.2V)
20 2.3V
21
7.5V
22
7.5V
23
2.3V
24
2.3V
25
2.3V
26 3.5V
27 3.5V
28 0V
( ):PLAYBACK
:STOP
SP+
6 6 6 6
SP–
5 5 5 5
SL+
4 4 4 4
SL–
3 3 3 3
PU–IN
2 2 2 2
GND
1 1 1 1
CNP700A
are waveform numbers shown in page 59.
2 3
Figure 40 SCHEMATIC DIAGRAM (1/10)
Q751
R753
2SA1015 GR
18
+B
C751
C750
4.7/25
0.1
+B
R757
1K
R761
1K
TRACKING
R762
GAIN
15K
R764
47K
R763
270K
TRACKING
OFFSET
VR754
47K
FOCUS
VR753
OFFSET
47K
R775
1K
Q701
KRA103 S
R776
22K
IC700
BA5914FP
FOCUS/TRACKING/SPIN
/SLIDE DRIVER
F–
1
F+
2
3
4
5
6
7
8
9
10
SL+
11
SL–
12
13
14
4
– 40 –
M62472FP
R793 120K
SERVO CONTRO
R792 120K
A+C
48K
R790 120K
1
–
+
R791 I/V AMP.
B+D
120K 48K
2
–
R794 +
R755
68K E
22K 60K
3
10K
–
R795
R756
+
F
68K
22K
4
C752 7.7K
R750
C753
120P 180K EF BAL
50K
120P
(CH)
5
(CH)
FE AMP.
VR751
APC OUT
180K + –
6
TRACKING ERROR
100K
APC IN
BALANCE
TE1 AMP.
7
APC
FE OUT
8
FS+
33K
9
1K 47K
C755
–
0.0033
TC IN +
10
TC Det
TE
11
TE2 AMP.
TE+
12
+
R765 R767
–
VR752
10K 2.2K TE–
M0999
13
10K C758 82K
TE OUT
0.33
14
R766
C757 22K
TG
220
0.15
15
R768
22K
TS–
R770 39K
R769
16
27K
27K
– +
10 A
TS OUT TS AMP.
17
C759
R772
R771
10/16
27K 82K 22K
SS FIL
18
C760
0.1
SS–
19
R773
–+
R774
5.6K 20 A
47K
SS OUT
SS AMP.
20
C761
0.022
FS–
21
R778
R777
220K
33K
C762
0.1
28
T–
27
T+
26
25
24
1/2Vcc
23
C701
22
100/10
C702
0.1
21
20
R701
10K
19
SPIN –
18
SPIN +
17
16
15
R811
10K
5 6
IC750
10K
+ –
10K
HF AMP.
HFOK
+ –
72K
72K
330K
MR
5P
Current
Reference
FZC
Focus
Search
I/F
RESET
10
10
+
–
FSR
10K
+
–
FS AMP