Schematic Diagram; Cd Servo Circuit - Panasonic SA-PM21PC Service Manual

18 Schematic Diagram

18.1. CD Servo Circuit

OPTICAL PICKUP UNIT
E GND
Vref F
A Vcc
HUL7213
C1
NC B
0.47
LPD LD
GND LDG
VR1
TRACKING COIL
FOCUS COIL
SCHEMATIC DIAGRAM - 1
CD SERVO CIRCUIT
Q701
B1ADCF000001
CN701
LASER POWER DRIVE
VCC
VCC
1 1
F
F
2 2
E
E
R754
3 3
5.6
LD LD
4 4
LD GND
LD GND
5 5
GND
GND
87
6 6
A
A
7 7
GND
GND
8 8
B B
9 9
VREF
VREF
10 10
LPD
LPD
11 11
C713
GND
GND
12 12 0.1
T-
T-
13 13
T+ T+
14 14
F-
F-
15 15
F+
F+
16 16
C735
0.1
15 16 17 18 19
C734
10V220
14 13 12 11 10
39 38 36
M
M701
TRV MOTOR
: +B SIGNAL LINE
C701
6.3V33
R701
4.7
60
93
94
95
84
R736
90
100
20 21 30 22 23 24 25
IC703
BA5948FPE2
IC 4CH DRIVE
9 8 29 7 6 5 4
35
37
M
M702
SP MOTOR
51
: CD-DA SIGNAL LINE
89 83
29
R729
1K
R728
R727 R749
1K 18K
R725
330
C752 C739 C715
0.018 0.018 0.47
C714
6.3V100
52
48
26 27 28
R766
C738
5.6K
0.056
55
3 2 1
R735
100
R723 R731
3.3K 22K
R732
1K
SA-PM21PC
82
10K
49
R715
3.3K
R739
1K