3. TROUBLE SHOOTING
- 109 -
Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3.7.2.3 Checking Switching Module(B7)
BOT
TP2
TP1
FL21010
U2002
C21111
33p
C21126
33p
1
2
FL21010
3
9
7
5
6
1
4
10
8
2
GND1
PORT1-
PORT3-
PORT2-
PORT3+
CTL
PORT2+
PORT1+
VDD
GND2
C20008 33p
C21123
100p
1
2
+2V7_VREG_L16
L21000
2.2n
C21124
1n
C20009 33p
DRX_B7_INP
DRX_B7_INM
DRX_B7_B40_INM
B40_B7_SEL
DRX_B7_B40_INP
DRX_B40_INM
DRX_B40_INP
L
H
B40_B7_SEL
LTE7_RX
LTE40_RX
TP1
TP2