LG 49LF5400 - Page 20

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LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
6. All Source Audio
Check the TV Speaker Menu
(Menu -> Audio -> TV Speaker)
Check AMP IC(IC5600) Power
24V, 3.3V
Check AMP I2C Line
R140, R141
Check Mstar AUDIO_MASTER_CLK
R148
Check Connector &
P5600
Check speaker resistance
and connector damage.
Check Output Signal
P5600
1, 2, 3, 4 pin.
Check Mstar I2S Output
IC5600 20,21,22 Pin
OFF
NO
NO
NO
NO
NO
NO
NO
Toggle the Menu
Main B/D 3.3V Line
Short Check
Check signal line.
Or replace Mstar(IC101)
Replace Mstar(IC101)
or Main Board.
Replace connector
if found to be damaged.
Replace speaker.
Replace Audio AMP
IC(IC5600)
Check signal line.
Or replace Mstar(IC101)
ON
OK
OK
OK
OK
OK
OK