LG 32LX330C Service Manual page 23

8. Audio of All input
Check the speaker menu
(menu -> sound -> TV speaker)
YES
Check the voltage of AMP
IC(IC3400)
13.2V_AMP, 3.5V
YES
Check the LGE2134(IC101)
Audio_Master_CLK signal R295
YES
Check the AMP I2C Line
R140, R141
YES
Check the LGE2134(IC101) I2S
output
IC5600 21,23,24 pin
YES
Check the Audio output signal
IC5600 1,46, 36,39 pin
YES
Check the connector P5600
YES
Check
the Speaker resistor or connector
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Only for training and service purposes
NO
Menu toggle
NO
Exchange the AMP IC or
Main board
NO
Exchange the LGE2134(IC101)
Or Main board
NO
Check the I2C signal or
Exchange the LGE2134(IC101)
NO
Check the I2C signal or
Exchange the LGE2134(IC101)
NO
Exchange the Audio AMP
IC5600
NO
Exchange the connector If
the connector is defect
NO
Exchange the speaker
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LGE Internal Use Only