Function Check - LG DM5360K Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

6. FUNCTION CHECK

FUNCTION CHECK
YES
Check IC402 pin9, 10(BT), pin23,
24(AUX), pin26, 27(TUNER) input.
YES
Check IC402
pin14: 5 V, pin5: 3.3 V.
YES
IC402
pin41, 42, 43, 44
output data.
YES
IC800(MT1389)
output data.
YES
OK
NO
Check L103, L104.
Check IC402
NO
pin6: RST, pin1: SDA,
pin2: SCL.
Replace IC402.
3-21
NO
NO
YES
Replace L103, L104.
Check IC100 pin15, 29, 33.