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LG 32LY560M Service Manual page 18

Chassis : la4aw
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6. All Source Audio
Check the TV Speaker Menu
(Menu -> Audio -> TV Speaker)
On
Check AMP IC(IC5600) Power
24V, 3.3V
ok
Check Mstar AUDIO_MASTER_CLK
R123
ok
Check AMP I2C Line
R111, R112
ok
Check signal line,
L5603, L5604, L5605, L5606
ok
Check Output Signal P5600
1, 2, 3, 4 pin.
ok
Check Connector & P5600
ok
Check speaker resistance
and connector damage.
7. Digital/Analog TV Audio
Check RF Cable & Signal
ok
Check Tuner 3.3V Power
L1600
ok
Check IF_P/N Signal
TU1601 6,7 Pin
ok
Follow procedure
'7. All source audio'
trouble shooting guide.
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Off
Toggle the Menu
No
Replace Amp IC(IC5600)
No
Replace Mstar(IC101) or Main Board.
No
Check signal line. Or replace Mstar(IC101)
No
Replace Audio AMP IC(IC501)
No
Replace C5630, C5632, C5633, C5631, C5634, C5635
No
Replace connector
if found to be damaged.
No
Replace speaker.
No
Replace L1600
No
Bad Tuner. Replace Tuner.
- 18 -
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