LG FH2 - Bt Function Doesnt Work

3-8
ONE POINT REPAIR GUIDE
4. BT FUNCTION DOESN’T WORK
4-1. BT Module
4-1-1. Solution
Replace IC105, PN102 on MAIN board.
4-1-2. How to troubleshoot (Countermeasure)
1) Please voltage check 3.3 V of PN102 pin12.
If 3.3 V voltage doesn’t come out, replace IC9.
2) Please check IC105 pin L1, L2, K1, K2, M2, P7, N7 signal and replace it.
3) Please check PN102 pin2, 3, 4, 5, 7, 9, 10 signal and replace it.
4) Check BT Module.
4-1-3. Service hint (Any picture/ Remark)
< MAIN circuit >
< MAIN board bottom view > < MAIN board top view >
IC105
IC105
PN102
PN102
PN102
PN102
IC105
IC105