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LG GWA-4164B Service Manual page 69

Dvd/cd rewritable drive
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• Pin Function
No
Symbol
Description
1
LDO-
Loading driver negative output
2
LDO+
Loading driver positive output
3
Vcc
BTL pre and Loading power supply
4
ACTIN1
Actuator driver 1 input
5
ACTIN2
Actuator driver 2 input
6
TJMON
monitor of chip temperature
7
BTHC
Capacitor connection terminal for spindle
current bottom holding
8
SPV
-S
Spindle driver sense power supply
M
9
PGND1
Spindle driver power ground 1
10
PGND2
Spindle driver power ground 2
11
U
Spindle driver output U
12
SPV
1
Spindle driver power supply 1
M
13
V
Spindle driver output V
14
fin
fin
15
PGND3
Spindle driver power ground 3
16
W
Spindle driver output W
17
SPV
2
Spindle driver power supply 2
M
18
SPRNF
Spindle driver current sense
19
HB
Hall bias
20
HU+
Hall amp.U positive input
21
HU-
Hall amp.U negative input
22
HV+
Hall amp.V positive input
23
HV-
Hall amp.V negative input
24
HW+
Hall amp.W positive input
25
HW-
Hall amp.W negative input
26
SPIN
Spindle driver input
27
DGND
PWM block pre-ground
No
Symbol
Description
54
ACO1+
Actuator driver 1 positive output
53
ACO1-
Actuator driver 1 negative output
52
ACO2+
Actuator driver 2 positive output
51
ACO2-
Actuator driver 2 negative output
50
ACO3+
Actuator driver 3 positive output
49
ACO3-
Actuator driver 3 negative output
48
AV
Actuator driver block power supply
M
47
ACTIN3
Actuator driver input 3
46
LDIN
Loading driver input
45
AGND
BTL driver block power ground
44
SPCNF
Spindle driver feedback filter
43
FG
Frequency generator output
42
Vc
Reference voltage input
41
fin
fin
40
SLO1+
Sled driver 1 positive output
39
SLO1-
Sled driver 1 negative output
38
SLO2+
Sled driver 2 positive output
37
SLO2-
Sled driver 2 negative output
36
SLGND
Sled driver power ground
35
CTL2
Driver logic control 2 input
34
CTL1
Driver logic control 1 input
33
SLRNF2
Sled driver 2 current sense
32
SLRNF1
Sled driver 1 current sense
31
SLV
Sled driver PowerMOS pre-supply
DD
30
SLIN2
Sled driver 2 input
29
SLIN1
Sled driver 1 input
28
DVcc
PWM block control power supply
73

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Gwa-4166bGsa-4166b