LG -E405 Service Manual page 61

BT/WI-FI FRONT-END
Module part
VREG_MSME_1.8V
BT_RST_N
I2C_COMMON_SDA_WCN
I2C_COMMON_SCL_WCN
L9003
68n
L9004 82n
FM_ANT
BT_PCM_OUT
BT_PCM_IN
C9008 L9006
BT_PCM_SYNC
82n
47p
BT_PCM_CLK
BT_PCM_OUT
BT_PCM_CLK
SLEEP_CLK
BT_UART_TX
BT_UART_RX
BT_UART_RTS
BT_UART_CTS
LGE Internal Use Only
ANT9001
C9000
100p
L9000
C9003 L9001
0.5p
100n
1n
3
WLAN_RX
4
WLAN_SW_[0]
TR_SW0
2
WLAN_SW_[1] TR_SW1
12
WLAN_SW_[2]
TR_SW2
7
BT_WLAN_RF
ANT
11
WLAN_PWR_DET_IN
CPL
C9009 C9010 C9011
2400MHz,2500MHz
DNI DNI DNI
ANTENNA SWITCH MODULE LOGIC
WiFi RX-ANT
WiFi TX-ANT
BT-ANT
C9002
22p
R9001 R9002
2.2K 2.2K
6
GND1
33
SYS_RST_N
28
I2C_SDA
29
I2C_SCL
43
FM_HRX_IN
49
FM_PRXTX_IO
R9003 DNI 46
FM_I2S_SD
56
FM_I2S_WS
51
FM_I2S_SCK
58
BT_PCM_IN
42
BT_PCM_CLK
53
SLEEP_CLK
36
BT_UART_RXD
47
BT_UART_TXD
40
BT_UART_CTS
57
BT_UART_RTS
R9004
1M
BT_WLAN_RF
L9002
3.9n
C9004
C9005
DNI
DNI
FL9000
L9005
1
WLAN_TX
5
2.4n
BT_TRX
C9006 C9007
6
GND1
DNI DNI
8
GND2
9
GND3
10
GND4
13
PGND
C9012 22p
C9013
C9014
DNI
DNI
SW0 SW1
HIGH LOW
LOW HIGH
LOW LOW
BT/FM Module : WCN2243
31
VDD_IO
24
VDD_XO_BIAS
14
VREG_DIG
4
VREG_ANA
10
VDD_LDO_IN
54
VDD_FM_1P3_1
37
VDD_FM_1P3_2
50
VDD_FM_1P3_3
U9000 55
VDD_FM_1P3_4
WCN2243
21
VDD_DIG_1P3
EAN61966101 32
VDD_FM_DAC
19
VDD_BT_PA
13
VDD_BT_1P3_1
12
VDD_BT_1P3_2
15
VDD_BT_1P3_3
5
VDD_BT_1P3_4
C9015 C9016
10n 10n
- 61 - Copyright © 2012 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
WLAN_RF_RX
WLAN_RF_TX
BT_RF_QCT
SW2
LOW
LOW
HIGH
TP2
TP1
C9017 C9018 C9019 C9020 C9021 C9022 C9023 C9024 C9025
4.7u 4.7u 10n
10n 10p 10n 1u
0.1u 10p
Only for training and service purposes
VREG_MSME_1.8V
+3V_WLAN_WCN