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LG GWA-4164B Service Manual page 68

Dvd/cd rewritable drive
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IC301 (BD7956FS) : CD-ROM/DVD-ROM 7CH POWER DRIVER
• Block Diagram
LDO-
LDO+
Vcc
ACTIN1
ACTIN2
TJMON
BTHC
SPVM_S
PGND1
PGND2
U
SPV 1
M
V
fin
PGND3
W
SPV 2
M
SPRNF
HB
HU+
HU-
HV+
HV-
HW+
HW-
SPIN
DGND
72
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
50k
100k
50k
100k
50k
100k
33.6k
33.6k
47k
54
ACO1+
53
ACO1-
52
ACO2+
51
ACO2-
50
ACO3+
49
ACO3-
48
AV
M
47
ACTIN3
46
LDIN
45
AGND
44
SPCNF
43
FG
42
V
C
41
fin
40
SLO1+
39
SLO1-
38
SLO2+
37
SLO2-
36
SLGND
35
CTL2
34
CTL1
33
SLRNF2
32
SLRNF1
31
SLV
DD
30
SLIN2
29
SLIN1
28
DVcc

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