LG U880 Service Manual page 95

4. TROUBLE SHOOTING
TP402
C590
TP1
2.5p
1p
NA
C591 C592
TCXO_BT_IN
BLUETOOTH
9
BT_CLK
12
14
2
3
1u
TP5
C402
1000p
U400
Schematic of Bluetooth RF Block
R513
0
R514
0
U504
6
CLK_REF SBST
10
SBCK
11
VDD_MSM SBDT
5
SYNC_DET_TX_EN
8
VDD_A RX_BB_TX_BB
4
LDO1 XTAL_IN
13
LDO2 NC
RB06A
C401
1000p
R401
100K VCC
5
2
4
3
GND
TC7S04FU
- 96 -
TP2
VREG_MSMP_2.7V
VREG_BT_2.85V
TP3
TP411
UART_TXD
TP412
UART_RXD
TP413
PM_ON_SW_N
BT_SBST
BT_SBCK
BT_SBDT
BT_TX_RX_N
BT_DATA
C514 1000p
TCXO_BT
TP4
VREG_BT_2.85V
TCXO_BT