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LG GSA-4040B Service Manual page 64

Super multi dvd drive
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Input/Output circuit diagram
Three-phase motor driver output
19
10
18
11
8 17
Hall signal input
54pin
54pin
1
3
5
PWM driver output SLED1, 2
31 32
34
36
BTL driver input FO, TK, LD
51pin
51pin
26
52
47k
53
51pin
27
47k
3ch
66
Spindle driver current detection input
20
9
Splindle driver feedback filter pin
54pin
54pin
2
4
6
33
BTL driver output FO, TK
51pin
35
45
37
47
PWM driver input SLED1, 2
30pin
28
47k
29
Reference voltage input
10k
112.5k
10k
150k
2ch
51pin
312.5
10k
44pin
51pin
46
48
54pin
50k
50k
Hall bias
54pin
7
FG signal output
54pin
21
BTL driver output LD
51pin
51pin
51pin
49
PWM driver input Spindle
54pin
54pin
24
112.5k
Control signal input
54pin
50k
50k
22
23
50k
50
54pin

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