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LGE Internal Use Only
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
4.14 Bluetooth Trouble
TEST POINT
Figure 4.16.1
CIRCUIT
CIRCUIT
ANT701
ANT702
TP2_C709
TP1_C708
U701
BT_CLK_26M C713
VDD_IO_1V8
RTC_32K C712
0
R707
1n
C713
DNI
C710
0
R703
15Kohms
R706
C709
DNI
DNI
C708
C712
1n
U701
F4
D5
1
A
6
B
7
D
6
E
3F
6F
A2
3
A
B3
E3
C3
F2
D2
E5
C2
F5
A4
B4
C4
E4
E2
D4
C1
C6
D1
B2
E1
B5
C5
C7
D6
6
A
7
B
1
B
7
E
7F
7
A
1F
3
D
5
A
T
A
B
V
O
D
D
V
2
C
D
D
V
G
E
R
V
X
P
D
D
V
F
R
D
D
V
B
S
U_
D
D
V
FT
D
D
V
V
H
G
E
R
V
RES
RFP
RST_N
REG_EN
SCL
HUSB_DN
SDA
TM2
SPIM_CLK
PCM_IN
SPIM_CS_N
PCM_OUT
PCM_CLK
LPO_IN
PCM_SYNC
XIN
UART_TXD
XOUT
UART_RXD
UART_RTS_N
GPIO_0
UART_CTS_N
GPIO_1
1
C
D
D
V
HUSB_DP
6
S
S
V
5
S
S
V
4
S
S
V
3
S
S
V
2
S
S
V
1
S
S
V
GPIO_6
GPIO_5
C706
10n
TP702
VDD_IO_1V8
C704
10p
C705
2.2u
VPA_2V85
10p
C703
C702
10n
2.2u
C701
VDD_IO_1V8
10n
C707
R702
0
R780 1K
TP705
TP701
TP706
TP703
2450MHz
FL701
4
2
3
1
IN
OUT
GND1 GND2
C714
10p
R711
0
TP707
FB701
600
R709
0
DNI
R710
BT_UART_TX
BT_UART_RX
BT_UART_RTS
BT_UART_CTS
BT_PCM_SYNC
BT_PCM_OUT
BT_PCM_IN
BT_PCM_CLK
BT_WAKEUP
RTC_32K
BT_CLK_26M
BT_RST_N
BT_WAKEUP_HOST
BT_CLK_REQ
BT_RF
CON_ANT_FEED
BTCX_STATUS
BTCX_TXCONF
BTCX_RF_ACTIVE
must have 1% tolerance
Base version
When power class 1.5 is used, R307 is populated and R308 is depopulated.
(Vice versa for power class 2)
QCT
IFX
VBT_PA_2V6
QCT
IFX
VBT_IO_1V8
VREG_MSMP_2V6
VREG_MSME_1V8
VIO_1V8
VPA_2V85
TP1 TP