A) Cd Servo Circuit - Panasonic SA-VK31EE Service Manual

SA-VK31EE

16.1. (A) CD Servo Circuit

OPTICAL PICKUP CIRCUIT
E GND
Vref F
A Vcc
NC B
C3
0.22
LPD LD
GND LDG
VR1
SCHEMATIC DIAGRAM - 1
Q7601
VCC
1 1
2 F 2
R7650
C1
E
3 3
0.47
LD
4 4
5 LD GND 5
GND
6 6
B
7 7
GND
8 8
(GUARD)
9 9
A
10 10
VREF
11 LPD 11
GND
12 12
(GUARD)
13 T- 13
14 T+ 14
F-
15 15
16 F+ 16
CN7001
TRACKING
COIL
FOCUS
COIL
14 15 16 17 18 19
C7335
0.1
C7334
10V220
13 12 11 10 9 8
AN8739SBTE2
SPINDLE MOTOR DRIVE
36 35
M
38 37
M
W7033 W7031 W7030
0 0 0
W7034 W7032
0 0
CD SERVO CIRCUIT
R7601
4.7
Q7601
B1ADCF000001
LASER POWER DRIVE
5.6
W7035
0
C7614
6.3V100
C7613
0.1
W7023
0
1 2 3
32 31 30
28
20 21 22 23 24 25
IC7003
7 6 5 4 3 2
IC7003
FOCUS COIL/
TRACKING COIL/
R7335 R7325
TRAVERSE MOTOR/
100
52
: CD-DA SIGNAL LINE
: +B SIGNAL LINE
W7036
0
30
W7046
0
4 5 6 7 8 9 10 11 12
IC7001
AN22004A-NF
SERVO AMP
24
29 28 27 26 25 23 22 21
C7147
470P
R7144
C7112
39K
2700P
C7111 W7015
2700P 0
39 41 34 31
R7107 R7108 R7106
150K
150K 1K
40 42 33 32
26
R7336
10
1
390
C7315
0.039
C7352 C7338 C7339
8200P 3300P 0.01
R7329
3.9K
R7327 R7349
3.9K 4.7K
R7323 R7331
6.8K 6.8K
C7103
6.3V100
C7104
0.1
R7152
R7151
15K
4.7K
13 14 15 16
20 19 18 17
C7110
560P
C7149
2200P
C7142
0.047
R7104
1K
R7328
3.9K