LG MICRO Hi-Fi SYSTEM - Page 22

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11. TUNER FUNCTION PART CHECK
YES
Check TUNER module power
(check 4pin 9V)
NO
Check TUNER
module(TU100) is working
Replace the related parts
NO
YES
Check IC300(CS5346)
41pin output waveform
TUNER FUNCTION PART CHECK
OK
YES
Check IC300(CS5346)
23, 24pin input waveform
YES