Laser Power Control Related Signal; Spindle Control Waveform - LG DP372 Service Manual

5. LASER POWER CONTROL RELATED SIGNAL

12
13
14
FIG 5-1

6. SPINDLE CONTROL WAVEFORM

15
16
17
FIG 6-1
LGE Internal Use Only
MDI1(0V/180mV)
CD_LD(3.3V//2.3V)
DVD_LD(3.3V/2.3V)
SP-(4.5V/2.8V)
SP+(1V/2.8V)
DMSO(1.65V/0.3V)
12
J401 J401
GND
24
LD_DVD
23
22
21
MDI1
20
LD_CD
19
VR_DVD
18
VR_CD
17
16
E
15
14
V20
13
C430 0.1uF C430 0.1uF
25 12
F
26 11
B
10
A
9
RFO
8
IOA
7
D
6
C
5
T-
4
T+
3
F+
2
F-
1
HEADER 24 SMD0.5 TOP HEADER 24 SMD0.5 TOP
CON24_0.5MM CON24_0.5MM
MDI1
C415 C415
1000pF 1000pF
R413 R413 C416 C416
680K 680K
R415 R415
7 7 0.1 1% 0.1 1%
F+
F-
FOSO R433 R433
DMSO R432 R432
16
SP+
SP-
T-
15
3-14 Copyright © 2008 LG Electronics. Inc. All right reserved.
CN201
L412 L412 VCC_5V
47UH( 47UH(
C427 C427 + + CE416 CE416
0.1uF 0.1uF 100uF/10V 100uF/10V
L413 L413
2
10uH 10uH S3.3V
1 3
B C E
R461 R461
2SB1132
47K/NC 47K/NC
2SB1132 2SB1132
1
Q411 Q411
L414 L414
CE417 CE417
R421 R421 4.7 4.7 220uF/6.3v 220uF/6.3v
10uH 10uH
R424 R424 4.7 4.7
+ +
CE418 CE418
47uF/6.3v 47uF/6.3v
2SB1132 2SB1132
1
C436 C436
NC NC
Q414 Q414
14
U401 U401 AM5898N AM5898N
1
EN2 BIAS
68pF 68pF
2
CT2 MUTE
3
COMP2 EN1
15 15
4
SW2 CT1
5
IPK2 COMP1
6
PVCC1 SW1
7
PVCC2 IPK1
8
VOFC+ PGND2
9
VOFC- PGND1
35
GND GND
10
VCC1 PGND
0 0
11
VINFC VCC2
10K 10K
12
VINSL+ VINTK
13
MGND VINSP
14
VOSL+ VOSP-
15
VOSL- VOSP+
16
MGND MGND
17
VOTK+ VOTK-
17
Only for training and service purposes
13
LDO2
S3.3V
LDO1
34
33
32
31
30
29
28
27
26
36
25
24
23
22
21
20
19
18