LG CM4520 - Tuner; aux Function Check

7. TUNER / AUX FUNCTION CHECK
FUNCTION CHECK
Check JK401,TU100.
NO
YES
Check IC401
(CS5346) Pin7, 8,
23, 24 input.
YES
YES
Check IC401
(CS5346) Pin9 output
data.
YES
Check IC401
Pin5: +5 V
Pin46: +3.3 V.
Check CN105 Pin7: +5 V
Pin9, 10: +3.3 V.
NONO
Check
IC801(MLC9800)
input data.
YES
Check IC401
Pin5: +5 V,
Pin6: High,
Pin46: 3.3 V.
Check IC401
Pin41: SDOUT,
Pin42: SLCK,
Pin43: LRCK,
Pin44: MCLK.
NONO
IC501(MLC9800)
output data.
OK
YES
3-25
AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE