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LG CM9540 - Lighting (Woofer Speaker)

LG CM9540
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3-35
ELECTRICAL TROUBLESHOOTING GUIDE
4. NO LIGHTING (WOOFER SPEAKER)
YES
YES
CD / USB play
Check IC501.
Check woofer speaker.
Check SMPS board.
NO
NO
CNWM02,
CNWS01 Pin3, 4 I2C signal
OK?
Pin1 +12 V OK?

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