Technics SL-HD550, Руководство по обслуживанию

Страница: 38 / 63

8 7 6 5
1 2 3 4
NBOUT GND NAOUT VREF
GND
Vcc BIN AIN
M
M
14 15 16 17 18 19 20
13 12 11 10 9 8 7
21 22 23 24 25 26
6 5 4 3 2 1
NC
RSTIN
IN3 IN4
VREF
Vcc
NC
GND
PVcc2
PGND2
NC
D4+ D4- D3+ D3-
/RST NC IN2 PC2 NC IN1 NC GND PVcc1 PGND1 NC D1- D1+ D2- D2+
C
A
B
D
E
F
G
15
14
13
16 16
15
14
13
12 12
11
8
7
6
5
4
3
2
1
11
10
9
8
7
6
5
4
3
2
1
10
9
15 16 17 18 19 20 21 22 23 24 25 26 27 28
14 13 12 11 10 9 8 7 6 5 4 3 2 1
PDE PDF
Vcc
PDA PDB
LPD
LD
RF
RFIN
CSBRT
CEA
BDO
LDON
GND
FBAL TBAL VREF FEN FEOUT TEOUT TEN NC NC ENV NC OFTR PDOWN /RFDET
A
B
C
D
TP36
TP35
C737
0.1
C736
0.1
TP38
TP37
M702
SPINDLE
MOTOR
M701
TRAVERSE
MOTOR
A B C D
C735
0.1
C734
10V220
B A D C
B A
R736
100
A B
R729
3.9K
R728
3.9K
C739
1500P
C738
0.01
R724
18K
R735
100
R723
6.8K
R731
6.8K
R715
1K
C715
2700P
R725
390
C714
6.3V100
C713
0.1
C712
0.1
C711
0.1
R708
22K
R707
39K
TP42 TP40
C749
2200P
R702
10K
C747
180P
R744
120K C710
120P
R705
150K
TP33 TP32
R704
1K
R706
1K
I H G F E D C
C742
0.027
B
A
R701
4.7
C701
6.3V33
CN701
(RF)
TP30
C716
820P
TJ701
A
B
C
D
E
D
E
C
A
B
D
C B A
C751
0.1
C750
0.1
VREF
C702
0.1
C706
2700P
C707 0.027
C704
0.1
C703
6.3V100
Q701
2SB709STX
LASER POWER
DRIVE
IC701
AN8839NSBE2
SERVO AMP
IC703
AN8739SBE2
FOCUS COIL/
TRACKING COIL/
TRAVERSE MOTOR/
SPINDLE MOTOR DRIVE
TRACKING
COIL
FOCUS
COIL
0.1
2
12
11
3
8
10
5
4
9
680P 680P
1K
0.1
0.047
6
Vcc
PDF
PDE
LD
GND
NB
GND
GND
NA
VREF
LPD
GND
T+
T-
F+
F-
A
LD
5V
7.7V
C752
1000P
R749
4.7K
R727
6.8K
TP29
OPTICAL PICKUP
CD SERVO CIRCUIT
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.
1.7V 3.3V 1.7V 1.7V 1.7V
(0.2V)
0V
(2.5V)
2.8V
(1.5V)
1V 0.7V 2.1V
(2.3V)
1.8V 0V
(3.3V)
0V
1.7V 1.7V 1.7V 1.7V 1.7V 1.7V 1.7V 1.7V 0V 3.3V
(0V)
(0.4V) (0.2V) (0.1V) (0.4V)
0V
(0.2V)
0V 0V 0V 0V 7.9V 7.9V 1.7V 1.7V 1.7V
1.7V 1.7V 3.3V 1.7V 1.7V
(0V)
0V 0V 0V 0V
(0.1V) (0.7V) (0.6V)
7.9V
PLAY
0.2V
P-P
2ms. 0.1V/DIV.
PLAY
2ms. 0.1V/DIV.
0.4V
P-P
PLAY
0.8V
P-P
0.5us. 0.2V/DIV.
3.3V
7.9V
0.9V
(1.8V)
3.3V
(2.5V)
2.8V
:POSITIVE VOLTAGE LINE :CD SIGNAL LINE