Tuner Function Check - LG DM2740 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

11. TUNER FUNCTION CHECK

Tuner function check
Check
tuner module(TU100)
operation.
YES
Check IC201(CS5346) Pin41,42,43,44
output waveform.
YES
Waveform OK?
YES
Check IC500
Pin48, 49, 50, 51 I2S signal.
YES
OK?
YES
Refer to PWM part.
NO
Check tuner module voltage
(Pin6 : +3.3 V).
Replace the module.
NO
Check or replace IC201, IC207.
NO
Replace IC500.
3-13
NO