Schematic Diagram; Cd Servo Circuit - Technics SL-HD560E Service Manual

SCHEMATIC DIAGRAM-1

H
OPTICAL PICK-UP
8
3
LD
11
G
12
2
10
5
4
9
F
6
1 2 3 4
E
8 7 6 5
TRACKING
COIL
FOCUS
COIL
D
C
TP38
M701
M
TRAVERSE
MOTOR
B
TP37
TP35
M702
M
SPINDLE
MOTOR
TP36
A
1
NOTE:
The number which noted at the connectors on the schematic diagram as "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"
indicates the schematic diagram serial number located on the left corner in the schematic diagram.
A

CD SERVO CIRCUIT

3.3V
R750
Vcc CN701
4.7
1 1
(2V) 1V
PDF
A
2 2
PDE
B E
3 3
D
LD
4 4
C
LD
A
GND
5 5
B
GND
6 6
NB
7 7
C
GND
8 8
NA
9 9 D
VREF
10 10
LPD
11 11 E
GND
12 12
T-
13 13
C750
0.1
T+
14 14
F-
15 15
C751
0.1
F+
16 16
TP42
C B A
D
B A D C
(0.4V) (0.3V) (0.5V) (0.3V)
0V 0V 0V 0V
15 16 17 18 19
14 13 12 11 10
0V 0V 0V 0V
D
(0.7V)
A B C D
C
B
A
2 3
:POSITIVE VOLTAGE LINE
Q701
PLAY
2SB709STX
LASER POWER
DRIVE
0.5 s. 0.2V/DIV.
2.8V (2.5V)
IC701
AN8885SBE1V
SERVO AMP
(0.2V)
1.7V 1.7V 3.3V 1.7V 1.7V 0V
1 2 3 4 5 6
2ms. 0.1V/DIV.
28 27 26 25 24 23
1.7V 1.7V 1.7V 1.7V 1.7V 1.7V
C712
0.1
C747 C710
180P 120P
C711 R744
0.1 120K
C749
2200P
TP40 TP33
B C
A
PLAY
VREF
2ms. 0.1V/DIV.
IC703
AN8739SBE2
FOCUS COIL/
TRACKING COIL/
TRAVERSE MOTOR/
SPINDLE MOTOR DRIVE
0V 7.3V 7.3V 1.7V
20 21 22 23 24 25
9 8 7 6 5
7.3V 1.7V 1.7V
7.3V
4
:CD PLAYBACK SIGNAL LINE
0.7V
(RF)
P-P
TJ701
TP29 TP30
C716
820P
(2.5V) (1.5V) (3.3V)
2.8V 1V 0.7V 2.1V 1.8V 0V 0V
7 8 9 10 11 12 13
PLAY
0.4V
P-P
22 21 20 19 18 17 16
1.7V 0V 1.7V 0V
C742
0.027
TP32
D K E F
0.1V
P-P
B A
1.7V 1.7V
26 27 28
4 3 2 1
3.3V 1.7V 1.7V
(0V)
A
R725 C715
390 2700P
R749
4.7K
R731
5
J
H
I
14
15 C
1
3.3V
(0V)
C
1
C7
0.
G
K J
B
A
R728
3.9K
B
C
D
E
F
6.8K
G
6 7