LG E475F Service Manual page 57

VREG_MSME_1.8V
BT_RST_N
I2C_COMMON_SDA_WCN
I2C_COMMON_SCL_WCN
L9003
100n
L9004 100n
FM_ANT
BT_PCM_OUT
BT_PCM_IN
C9008 DNI
BT_PCM_SYNC
L9006
12p
BT_PCM_CLK
BT_PCM_OUT
BT_PCM_CLK
SLEEP_CLK
BT_UART_TX
BT_UART_RX
BT_UART_RTS
BT_UART_CTS
Wi-Fi : WCN1314
LGE Internal Use Only
C9044
C9045
DNI
DNI
C9002
22p
R9001 R9002
2.2K 2.2K
GND1
SYS_RST_N
I2C_SDA
I2C_SCL
FM_HRX_IN
FM_PRXTX_IO
R9003 DNI
FM_I2S_SD
FM_I2S_WS WCN-2243-0-58BWLNSP-TR-06-0
FM_I2S_SCK
BT_PCM_IN
BT_PCM_CLK
SLEEP_CLK
TP9000
BT_UART_RXD
BT_UART_TXD
BT_UART_CTS
BT_UART_RTS
R9004
1M
SLEEP_CLK
WLAN_RST_N
WLAN_ACTIVE
BT_PRIORITY
BT_ACTIVE
WLAN_CLK_WCN
WLAN_RF_RX
WLAN_PWR_DET_IN
WLAN_CLK_REQ_WCN
WLAN_SW_[0]
WLAN_SW_[1]
WLAN_SW_[2]
WLAN_CMD
WLAN_CLK
WLAN_SDIO[3]
WLAN_SDIO[2]
WLAN_SDIO[1]
WLAN_SDIO[0]
BT/FM Module : WCN2243
VDD_IO
VDD_XO_BIAS
VREG_DIG
VREG_ANA
VDD_LDO_IN
VDD_FM_1P3_1
VDD_FM_1P3_2
VDD_FM_1P3_3
U9000
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
C9015 C9016 C9017
10n 10n 10n
18
SLEEP_CLK
27
GND_D1
9
DNC1
25
TP9001 GND_D2
26
GND_D3
19
WLAN_RST_N
39
WLAN_ACTIVE
20
BT_PRIORITY
29
BT_ACTIVE
41
C9035 1n
TCXO_IN
80
RF_RX
87
PDET_IN
22
PA_EN
17
WLAN_CLK_REQ
12
TR_SW_EN_0
21
TR_SW_EN_1
11
TR_SW_EN_2
23
SDIO_CMD
14
SDIO_CLK
15
SDIO_DATA3
6
SDIO_DATA2
16
SDIO_DATA1
13
SDIO_DATA0
- 57 - Copyright © 2013 LG Electronics. Inc. All right reserved.
3. TROUBLE SHOOTING
VREG_MSME_1.8V
+3V_WLAN_WCN
C9018 C9019 C9020 C9021 C9022 C9023 C9024 C9025
4.7u 4.7u 10n
10p 10n 1u
0.1u 10p
28
DNC2
82
PLL_EXT_LPF
C9030
75
GND_A
470p
84
RF_TX_DA
71
RF_TX_PA
U9001
45
GND_A1
56
GND_A2
53
GND_A3
33
GND_A4
63
REXT
Only for training and service purposes
WLAN_RF_TX