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LG CM9550 Service Manual page 54

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ELECTRICAL TROUBLESHOOTING GUIDE
A
IC501
PinD1, D2, E1 I2S clock signal
OK?
YES
IC501
PinE2 I2S data signal
OK?
YES
IC600
PWM data output signal
OK?
YES
B
NO
Check IC501.
NO
Check IC501.
NO
Replace IC600.
3-33
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