Technics SL-PD7 Service Manual page 38

SCHEMATIC DIAGRAM -1
OPTICAL PICKUP CIRCUIT
LASER DIODE
6
8
11
C
C
12
10
NBOUT
5 1 8
GND
GND
4 2 7
VCC
9
NAOUT
6
3
BIN
VREF
4 5
AIN
2
3
C C
CD SERVO CIRCUIT
R701
4.7
C701
6.3V33
3.2V
Q701
CN701
2.7V
((2.3V))
VCC 0.9V
1 1
((2V))
PDF
2 2
PDE
3 3
R750
LD
4 4
4.7
LD GND
5
5
GND
6 6
C
NB
7
7
GND
C713
8 8
0.1
NA
9 9
VREF
10 10
LPD
11 11
GND
12
12
T-
13 13
T+ C750
14 14
0.1
F-
15 15
F+
16 16
C751
0.1
15 16 17 18
C735
0.1
C734
10V220 14 13 12 11 10
C737
36
0.1
M
M702
SP MOTOR
C736
38
0.1
M
M701
TRV MOTOR
: +B SIGNAL LINE
Q701
2SA1037AKSTX
LASER POWER DRIVE
C714
6.3V100
1
IC701
AN8885SBE1
SERVO AMP
28 27 26 25
C712
0.1
C711
0.1
R708
22K
IC703
AN8739SBE2
FOCUS COIL/
TRACKING COIL/
TRAVERSE MOTOR/
SPINDLE MOTOR DRIVE
19 20 21 29 22 23 24 25 26 28
27
GND
IC703
GND
9 8
30 7 6 5 4 3 2 1
R735 R725
100 390
35
C715
2700P
R715
1K
37
: CD SIGNAL LINE
29
30
C703
6.3V100
C704
0.1
C707
0.027
2 3 10 11 12 13 14
4 5 6 7 8 9
IC701
24 23 22 21 20 19 18 17 16
15
C710
C747
180P 120P
R702 R705
10K 150K
R744
120K
C749
2200P
C742
0.027
R707 R704
R706
39K 1K
1K
33
R736
100
C752
C738 C739
1000P 1500P
0.01
R729
3.9K
R727 R749
3.9K 4.7K
R723 R731
6.8K
6.8K
R728
3.9K