LG RAT375 - Page 25

3-10
8. 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 data
output.
YES
Check IC401
Pin46: +3.3 V
Pin5: +5 V.
Check CN105 Pin7: +5 V
Pin9,10: +3.3 V.
NONO
Check
IC801(MLC9800)
data input.
YES
YES
Check IC401
Pin6: High
Pin5: +5 V,
Pin46: 3.3 V.
Check IC401
Pin44:MCLK, 43: LRCK,
42: SLCK, 41: SDOUT.
NONO
Replace IC401.
IC501(MLC9800)
data output.
OK
YES