Checking Bluetooth Block - LG U970 Service Manual

4. TROUBLE SHOOTING

4.8 Checking Bluetooth Block

Test Point of the Bluetooth Block
TP4
TP3
Schematic of the Bluetooth Block
BLUETOOTH
BT_CLK
VREG_MSMP_2.7V
VREG_BT_2.85V
TP1
TP4
TP2
Rev. H
LBRQ-2B43A
C164 1000p
9
CLK_REF
3
VCC_OUT
2
VDD_INT
10
VDD_MSM
14
C166
C167
VDD_BAT
100p
0.1u
C171 C172
C170 1u 1u
C173
100p
2.2u
TP1
TP2
C157
0
L116 C158
NA
NA
M100
16
ANT
4
SBST
11
SBCK
12
SBDT
5
SYNC_DET_TX_EN
13
RX_BB_TX_BB
C168
7
XTAL_IN
8 6 1
- 96 -
TP1. VREG_BT_2.85V
TP2. VREG_MSMP_2.7V
TP3. TCXO_BT
TP4. BT ANT Output
Rev. E
TP100 TP102
BT_SBST
BT_SBCK
BT_SBDT
BT_TX_RX_N
BT_DATA
1000p
TCXO_BT
TP3