4. TROUBLE SHOOTING
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Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ANT9001
C9006
DNI
L9004
2.4n
100n
C9004
100p
C9001
DNI
C9007
C9011
10p
10p
C9012
C9013
10p
C9014
22p
C9003
1.8p
FL9001
2400MHz,2500MHz
13
11
7
12
2
4
10
9
8
6
5
1
3 WLAN_RX
WLAN_TX
BT_TRX
GND1
GND2
GND3
GND4
TR_SW0
TR_SW1
TR_SW2
ANT
CPL
PGND
C9015
DNI
C9009
DNI
L9001
3.9n
C9008
DNI
C9016
DNI
C9002
100p
C9047
100p
FM_ANT
BT_WLAN_RF
BT_WLAN_RF
BT_RF_QCT
WLAN_SW_[0]
WLAN_SW_[1]
WLAN_SW_[2]
WLAN_PWR_DET_IN
WLAN_RF_RX
WLAN_RF_TX
ANTENNA SWITCH MODULE LOGIC
WiFi RX-ANT
WiFi TX-ANT
BT-ANT
SW0
BT/WI-FI FRONT-END
SW1
SW2
HIGH
LOW
HIGH
HIGH
LOW
LOW
LOW
LOW
LOW
0603
0603
U9001
WCN2243
EAN61966101
3
34
35
30
17
20
52
26
27
25
45
5
15
12
13
19
32
21
55
50
37
54
10
4
14
24
31
57
40
47
36
53
42
58
51
56
46
49
43
29
28
33
6
1
11
7
2
18
9
8
22
16
44
39
38
48
23
41
GND2 GND3
AGND_FM1 AGND_FM2 AGND_FM3 AGND_FM4
GND4
AGND_F
M
AGND_BT1 AGND_BT2 AGND_BT3 AGND_BT4 AGND_BT5 AGND_BT6 AGND_BT7
GND1
SYS_RST_N
I2C_SDA
I2C_SCL
FM_HRX_IN
FM_PRXTX_IO
FM_I2S_SD
FM_I2S_WS
FM_I2S_SCK
BT_PCM_IN
BT_PCM_CLK
SLEEP_CLK
BT_UART_RXD
BT_UART_TXD
BT_UART_CTS
BT_UART_RTS
VDD_IO
VDD_XO_BIAS
VREG_DIG
VREG_ANA
VDD_LDO_IN
VDD_FM_1P3_1
VDD_FM_1P3_2
VDD_FM_1P3_3
VDD_FM_1P3_4
VDD_DIG_1P3
VDD_FM_DAC
VDD_BT_PA
VDD_BT_1P3_1
VDD_BT_1P3_2
VDD_BT_1P3_3
VDD_BT_1P3_4
FM_RDS_INT
SYS_CLK
FM_LO_L FM_LO_R
BT_PCM_OUT BT_PCM_SYN
C
BT_CLK_REQ
BT_ACTIV
E
BT_STATU
S
TX_CONFIR
M
BT_RFIO
0
R9005
TP9006
TP9005
TP9004
TP9003
C9026
DNI
R9002
2.2K
L9003
82n
R9003
2.2K
VREG_MSME_1.8V
C9017
10n
R9006
1M
C9018
10p
10n
C9019
22p
C9005
C9020
10p
C9023
10n
10n
C9024
C9025
0.1u
+3V_WLAN_WCN
L9002
68n
C9010
47p
L9005
82n
R9001
1M
VREG_MSME_1.8V
C9021
4.7u
C9022
4.7u
C9027
10p
SLEEP_CLK
FM_L FM_R
BT_PCM_CLK
BT_PCM_SYN
C
BT_UART_CTS
BT_UART_RTS
BT_PCM_OUT
BT_PCM_I
N
BT_RST_N
BT_UART_RX
BT_UART_TX
BT_ACTIV
E
BT_PRIORITY WLAN_ACTIV
E
BT_RF_QCT
BT_FM_CLK_WCN
BT_FM_CLK_REQ_WC
N
FM_RDS_INT
NFC_WCN_HWI2C_SDA
NFC_WCN_HWI2C_SCL
CHANGE 0126
BT/FM Module : WCN2243
close to pin13
close to pin5
close to pin54
close to pin37
CHANGE 1030
TP1
TP2