LG 43LW540S - Page 20

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LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
7. Audio of All input
Check the speaker menu
(menu -> sound -> TV speaker)
No
No
Yes
Check the voltage of AMP IC(IC5600)
13.2V_AMP, 3.5V
Menu toggle
Exchange the AMP IC or
Main board
Check the AMP I2C Line
R140, R141
No
Yes
Check the I2C signal or
Exchange the SoC(IC101)
No
Yes
Check the SoC(IC101) I2S output
AR5601
Check the I2C signal or
Exchange the SoC(IC101)
Check the Audio output signal and coil
L5602, L5603, L5604, L5605
No
Yes
Exchange the Audio AMP
IC5600, or Coil.
No
Yes
Check the connector P5600
Exchange the connector If
the connector is defect
Check the Speaker resistor or connector
No
Yes
Exchange the speaker