AUX in does not work
AUX in does not
work
Go
Check voltage at U18 PIN16:5V on Main
Board whether normal or not
Yes
Check Main Board U18 Pin4, Pin11 signal
input whether right or not
Yes
Check
U27
or not
broken
Yes
Replace U27 4HC4052
5-8
74HC4052
whether
No
Refer to Power Board XP501
No
No
Check AUX IN connector
Check Main Board U5
Trouble shooting Chart