LG CMS4540F/W - Page 42

OK
Check
IC601(TAS5548)
input data
Pin24
PWM wave.
NO
Refer to
CD troubleshooting.
Check
CD Assy communication
Pin22, 23, 24.
OK
NO
NO
Check each line
resistor output.
Check
IC601 input
data.
Check PWM
modulator output
FL: Pin48(-),49(+)
FR: Pin46(-),47(+).
Other output
check.
NO
Replace IC601.
Check IC601.
NO
OK
YES
YES
YES
YES
YES
YES
A
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AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE