Panasonic SA-PM30MD - Page 50

14.2. (B) CD Servo Circuit
J
0.5us. 0.2V/DIV
PLAY
0.8V
P-P
PLAY
2ms 0.1V/DIV
0.2V
P-P
2ms 0.1V/DIV
PLAY
0.6V
P-P
1.6V
1.6V
3.2V
1.6V
1.6V
((0.2V))
0V
((2.3V))
2.7V
((1.4V))
0.9V
0.7V
((2.3V))
2.1V
1.6V
0V
((3.1V))
0V
((3.1V))
0V
0V
1.6V
3.2V
1.6V
1.6V 1.6V
1.6V
1.6V
1.6V
1.6V
((3V))
3.3V
((3V))
3.3V
((3.5V))
3.3V
3.3V
7.3V
7.3V
7.3V
1.6V
1.6V
1.6V
1.6V
1.6V
0V
3.2V
7.3V
3.7V
((4.1V))
3.7V
((3.3V))
3.3V
((3.5V))
3.3V
((2.3V))
2.7V
((2.5V))
0.9V
3.2V
OPTICAL PICKUP CIRCUIT
15
14
16
13
17
12
18
11
19
10
20
9
21
8
22
7
23
6
24
5
25
4
26
3
27
2
28
1
IC703
BA5948FPE2
R724
15K
R725
680
R715
1K
R732 1K
R731 10K
R729
2.7K
R728
2.2K
R727 2.7K
R749 2.7K
R723
10K
R735
100
R736
100
R701
4.7
R704
1K
R744
120K
R705
150K
R702
10K
R706
1K
R707
270K
R708
82K
C736
0.1
C715
2700P
C750
0.1
C751
0.1
C752
1500P
C739
2200P
C704
0.1
C742
0.027
C747
180P
C710
120P
C749
2200P
C713
0.1
C707
0.027
C702
0.1
C706 2700P
C712
0.1
C711
0.1
C737
0.1
C735
0.1
C738
0.056
C703
6.3V100
C701
6.3V33
C714
6.3V100
C734
10V220
M
M701
M
M702
1
3
5
7
9
8
6
4
2
10
11
12
13
14
15
16
CN701
Q701
2SA1037AKSTX
15
21
20 19
18
17
16
24
23
2228
27
26
25
14
13
12
11
10
98
7654321
AN8837SBE1
SP MOTOR
TRV MOTOR
NC
NC
NC
VCC
NC
VREF
IN4 IN3
NC
PVCC2
PVCC1
NC PC1 PC2 IN1 IN2
GND
(GUARD)
GND
GND
PGND2
D4+
D4-
D3+
D3-
PGND1
D2+ D2- D1+ D1- NC
F+
F-
T+
T-
LPD
VREF
NA
NB
GND
LD GND
LD
PDE
PDF
VCC
NC
Q701
IC701
IC703
GND
(GUARD)
IC701
TEN FEN FEOUT
FBAL
TBAL TEOUT
CEA
RF
LPD
LD
RFIN
PDF
PDE
PDB
PDA
VREF ENV OFTR
/RFDET
GND
LDON
BDO
VCC
CSBRT
VDET CROSS EMOFF TEBPF
R754
5.6
701
RF
42
32
33
40
38
39
36
37
SERVO AMP
FOCUS COIL/
TRACKING COIL/
TRAVERSE MOTOR/
SPINDLE MOTOR DRIVE
LASER DIODE
6
8
11
12
10
5
4
9
2
3
1
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
VREF
AIN BIN
NAOUT
VCC
GND
GND
NBOUT
4
3
2
5
8
7
6
TRACKING
COIL
FOCUS
COIL
CD SERVO CIRCUIT
: + B Line
: CD Signal Line
SCHEMATIC DIAGRAM-7
LASER POWER
DRIVE
50
SA-PM30MD