LG U310 Service Manual page 95

4. TROUBLE SHOOTING
VREG_BT_2.85V
TP5
C709
0.1u
R711
10K
C710 1000p
TCXO_OUT
ANT700
NC1
FEED NC2
SNMF0012601
R704
0
C700 C750
NA
0.5p
R700
BT_SBST
R701
BT_SBCK
R702
BT_SBDT
BT_TX_RX_N
R703
BT_DATA
C711 1000p
TP4
Schematic of Bluetooth RF Block
U703
TP1
BLUETOOTH
KYOCERA
U703
RB04
0 6 9
SBST CLK_REF
0 10
SBCK
0 11 12
SBDT VDD_MSM
5
SYNC_DET_TX_EN
0
8 14
RX_BB_TX_BB VDD_A
4 2
XTAL_IN LDO1
13 3
NC LDO2
C701
1u
U704
- 96 -
TP2
TP3
BT_CLK
VREG_MSMP_2.7V
VREG_BT_2.85V
C702 C703 C704 C705 C706 C707 C708
1u 1u 33p 1u 33p
0.01u 0.01u