LG LG-E400 - Page 88

4. TROUBLE SHOOTING
- 88 -
Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
10
9
C
n2.1
L906
100n
C908
DNI
C916
DNI
C909
DNI
L900
3.9n
4
19
C
p7
.
2
FL900
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
C907
DNI
L903
2.4n
C911
10p
C912
10p
C913
10p
C906
DNI
2
09
C
p
001
C946
100p
C915
1.8n
ANT901
L905
DNI
WLAN_RF_TX
WLAN_RF_RX
WLAN_PWR_DET_IN
WLAN_SW_[2]
WLAN_SW_[1]
WLAN_SW_[0]
BT_RF_QC
T
BT_WLAN_RF
BT_WLAN_RF
BT/WI-FI FRONT-END
LOW
HIGH
SW0 SW1 SW2
LOW
ANTENNA SWITCH MODULE LOGIC
LOW
HIGH
HIGHLOW
LOW
LOWWiFi RX-ANT
WiFi TX-ANT
BT-ANT
Module part