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LG GWA-4164B Service Manual page 75

Dvd/cd rewritable drive
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Spindle operating is abnormal
Is there
Spindle control DSP output?
(IC201 pin70)
YES
Is there
Spindle drive voltage output?
(IC301 pin 11, 13, 16)
YES
Is there
Spindle drive voltage output?
(IC301 pin 1, 2, 3)
NO
Check the Connection CN301.
NO
Replace the IC201.
NO
Is there
FG signal input?
(IC201 pin 71)
YES
OK
YES
Replace the Spindle Motor.
NO
Check the output of IC301 pin 43.
Check the connector CN301.
Replace the IC301.
79

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