LG -E400f Service Manual page 70

Module part
BT/WI-FI FRONT-END
ANT901
100p
L905
C946
DNI
WLAN_SW_[0]
WLAN_SW_[1]
WLAN_SW_[2]
BT_WLAN_RF
WLAN_PWR_DET_IN
LGE Internal Use Only
BT_WLAN_RF
L906
100n
3
WLAN_RX
WLAN_TX
4
BT_TRX
TR_SW0
2
TR_SW1
12
GND1
TR_SW2
GND2
7
GND3
ANT
11
GND4
CPL
PGND
C911 C912 C913
2400MHz,2500MHz
10p 10p 10p
ANTENNA SWITCH MODULE LOGIC
WiFi RX-ANT
WiFi TX-ANT
BT-ANT
L900
3.9n
C907
DNI
FL900
L903
1
5
2.4n
C908
6
DNI
8
9
10
13
1.8n
DNI
C915
SW0 SW1
HIGH LOW
LOW HIGH
LOW LOW
- 70 - Copyright © 01 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
WLAN_RF_RX
C906
DNI
WLAN_RF_TX
C909
DNI
BT_RF_QCT
C916
SW2
LOW
LOW
HIGH
Only for training and service purposes