Aux Function Check - LG XC62-A0U Service Manual

8. AUX FUNCTION CHECK

AUX function check
YES
Check JK800 connection.
YES
Check
IC200(BU4052)_
PIN4, 11 input
waveform.
YES
Check IC200(BU4052)_
PIN3, 13 output waveform.
YES
Check
IC801(MC4580)_PIN 2, 6
input waveform.
YES
OK
Check
NO
IC200(BU4052)_PIN16
VDD, PIN8 VSS
power.
Replace IC200
Check
NO
IC801(MC4580)_PIN4
VSS, PIN8 VDD
power.
Replace IC801
3-10
NO
YES
NO
YES
Check µ-COM(IC301)_
PIN83, 84 commucation.
Refer to
SMPS troubleshooting.