LG U8210 Service Manual page 101

4. TROUBLE SHOOTING
START
TP1 level > -6dBm ?
NO
TP2 > 2.5V
YES
TP5 > 2.8V
YES
TP6 19.2MH z exist?
YES
Replace U406
Check BT ANT.
YES
(ANT400) soldering
TP3 > 2.5V
NO
& TP4 > 2.0V
YES
Replace Q504
Replace PM6650
NO
(U501)
NO
TP7 19.2MHz exist?
NO
Replace Board
- 102 -
NO
YES
Replace U500