Panasonic SA-AK88 Service Manual page 37

SCHEMATIC DIAGRAM-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.
OPTICAL PICKUP
8
3
LD
11
12
2
10
5
4
9
6
1 2 3 4
8 7 6 5
TRACKING
COIL
FOCUS
COIL
A
M702
M
SPINDLE
MOTOR
B
TP35
TP38
C
M701
M
TRAVERSE
MOTOR
D
TP37
CD SERVO CIRCUIT
Q701
2SA1037AKSTX
LASER POWER
DRIVE
3.3V
R750 R752
Vcc CN701
5.6 0
1 1
PDF
A (1.9V)
2 2
PDE
B D
3 3
E
LD
4 4
C
A
LD.GND
5 5
B
GND
6 6
NB
7 7
C
GND
8 8
D
NA
9 9 E
VREF
10 10
LPD
11 11
GND
12 12
T+
13 13
C712
0.1
T-
14 14
F+ C711
15 15
0.1
C751 C750
0.1 0.1
F-
16 16
D C B A
TP42
VREF
B A D C
(0.4V) (0.2V) (0.1V) (0.4V)
0V 0V 0V 0V
14 15 16 17 18
13 12 11 10 9
0V 0V 0V 0V
(0.1V) (0.7V) (0.6V)
A B D C
PLAY
(2.5V)
0.5 s. 0.2V/DIV.
3V
1V
(0.2V)
1.7V 1.7V 3.3V 1.7V 1.7V 0V
1 2 3 4 5 6
PLAY
0.2V
P-P
2ms. 0.1V/DIV.
28 27 26 25 24 23
1.7V 1.7V 1.7V 1.7V 1.7V 1.7V
C747
180P
R744 C710
120K 120P
C749
1800P
C742 0.027
TP33
H G
I
IC703
AN8739SBE2
FOCUS COIL/
TRACKING COIL/
TRAVERSE MOTOR/
SPINDLE MOTOR DRIVE
(0.2V)
0V 7.8V 7.8V 1.7V
19 20 21 22
8 7 6 5
7.8V 1.7V 1.7V
:POSITIVE VOLTAGE LINE
:CD-DA/V-CD(AUDIO & VIDEO) SIGNAL LINE
3.3V 5V
0.9V
(RF)
P-P
TJ701
TP29 TP30
C716
820P
IC701
AN8839NSBE2
SERVO AMP
(2.5V) (1.5V) (2.3V) (3.2V)
3V 1V 0.7V 2.1V 1.8V 0V 0V
7 8 9 10 11 12 13
PLAY
0.6V
P-P
2ms. 0.1V/DIV.
22 21 20 19 18 17 16
1.7V 1.7V 1.7V 1.7V 1.7V 0V
F E D
B A
1.7V 1.7V
23 24 25 26
B A
4 3 2 1
3.2V 1.7V 1.7V
(0V)
R725 C715
390 2700P
7.7V 7.8V
B
A
14
15
3.2V
(0V)
C
R749
4.7K
C
A
R728
3.9K
B
D
E
F
R731
6.8K
G