LG DP372D - Laser Power Control Related Signal; Spindle Control Waveform

3-15
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LDO1
AVCC1
V20
F-
F+
T+
T-
D
E
C
IOA
RFO
A
F
GND
AVCC1
LD-CD
MDI1
LD-DVD
GNDGND
B
S3.3V
VCC
DV3389P_3V3
S3.3V
3
2SB1132
1
C
2
EB
HITACHI HOP1200X
Very Important to
reduce Noise
C326
104
C326
104
+
CE314
47uF/6.3v
+
CE314
47uF/6.3v
12
R335
0
R335
0
D
2SK3018
D
2SK3018
2
Q311
2SB1132
Q311
2SB1132
1
2 3
DD
2
R336
0
R336
0
C323
104
C323
104
Q308
2SB1132
Q308
2SB1132
1
23
+
CE313
220uF/6.3
+
CE313
220uF/6.3
1 2
C324NC/104C324NC/104
L311
10uH
L311
10uH
R343
4.7R343 4.7
CN301
CON24_0.5MM
CN301
CON24_0.5MM
10
9
8
7
6
5
4
3
2
1
11
13
12
15
14
16
20
19
18
17
24
23
22
21
25
26
C330
NC
C330
NC
L312
10uH
L312
10uH
+ CE312
100uF/10v
+ CE312
100uF/10v
12
L310
FB
L310
FB
C325
NC/104
C325
NC/104
R339
4.7R339 4.7
R337
47K
R337
47K
5. LASER POWER CONTROL RELATED SIGNAL
6. SPINDLE CONTROL WAVEFORM
FIG 5-1
12
13
14
SP+
SP-
T-
FOSO
DMSO
M5V
GND
35
VCC1
10
VINSL+
12
VOSL+
14
MGND
13
VINFC
11
VOSL-
15
MGND
16
VOTK+
17
R325 10KR325 10K
R324 0R324 0
FIG 6-1
15
16
17
15
17
16
12
13
14
SP-(4.5V/2.8V)
SP+(1V/2.8V)
DMSO(1.65V/0.3V)
MDI1(0V/180mV)
CD_LD(3.3V//2.3V)
DVD_LD(3.3V/2.3V)