LG LG-P350 - Page 90

4. TROUBLE SHOOTING
- 90 -
Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Set the phone Rx is On
Check BIAS over 2.1V
Check bias block soldering
No
Yes
Change the board
Check TP1 Signal exist?
Check RF Switch (M/S)
No
Yes
Check TP2 Signal exist?
Check TX Module Refer 1.4
No
Yes
Check TP3 Signal exist?
Check Duplexer
No
Yes
Check TP4 Signal exist?
Check RTR6285 and Rx SAW filter
No
Yes
1.2n
L1019
C1075
3.3n
2140MHz
FL1002
45
1
32
G1 O1
IN
G2 O2
33pC1074
L1017
1.2n
VDD_RX
C1076
DNI
C1081
3.9p
DNI
C1073
2n
L1016
3.9p
C1072
p
00
1
86
01
C
7
6
0
1
C u
1
.0
R1015
DNI
R1021
0
K14
1
0
1
R
RX_WCDMA_2100_LNA_OUT
RX_WCDMA_1900_LNA_OUT
WB2100_MIX_INP
WB2100_MIX_INM
WCDMA RX 2100 LNA Circuit
W2100 RX(2110 - 2170 MHz)
0603
TP4
Bias