LG U880 Service Manual page 96

Set the Phon e Rx is ON
NO
TP1 < -6dBm
YES
NO
TP2 > 2.5V
YES
NO
TP3 > 2.8V
YES
NO
@TP4
19.2MHz ?
YES
Repla ce BT module
(U504)
4. TROUBLE SHOOTING
Check BT Antenn a
soldering
Replace PCB
Replace PMIC
@TP5
19.2MHz ?
YES
Chan ge U400
- 97 -
NO
Replace PCB