LG lg-d821 - Page 85

3. TROUBLE SHOOTING
- 85 -
Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Check TP1
Check TP1
Signal Exist?
Check the RX Level
Yes
Yes
Yes
No
No
No
Check the U2004
(WTR1605L-1)
Check TP2
Signal Exist?
Check the U1000
Check TP3
Signal Exist?
Check the FL1001
(B5 Duplexer)
33p
C1101
100pC1008
100p
C1010
L1004
18n
12n
L1086
C1004 3p
33p
C1104
FL1001
17
9
8
10
7
11
6
12
5
13
4
14
3
15
2
16
1
RX
GND13
GND1
GND12
GND2
GND11
GND3
GND10
GND4
GND9
GND5
ANT
TX
GND8
GND6
GND7
GND14
100p
C1005
C1009
3p
L1085
12n
L1007
DNI
L1088 3.9n
L1089 3.9n
TRX_B5_B26
TX_PA_OUT_B5_B26_BC0_BC10_ET
TX_PA_OUT_B5_B26_BC0_BC10_APT
PRX_LB3_IN_P
PRX_LB3_IN_N
B5/B6/B19/B26/BC0/BC10/G850
TP2
TP3