LG LG-E960 - Page 110

4. TROUBLE SHOOTING
- 110 -
Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Schematic of LTE Band2 RF PRX Level.
START
Check TP1 Signal exist?
Check RF(M/S)
No
Yes
Check WTR1605L
Yes
Yes
Check TP2
Signal exist?
Check TP3
Signal exist?
Check SP4T(U1201)
Check SAW(FL1207)
No
No
C1209 1n
VA1201
100p
C1215
10n
C1213
C1214
100p
U1201
8 7 6 5
9 4
10 3
11 2
12 1
13 14 15 16 17
PGND
NC RF2 GND5
RF1
VDDGND4
V3ANT
V2GND3
V1RF5
GND1
RF4
GND2
RF3
C1211
DNI
100p
C1216
L1208
10n
C1210
DNI
C1208 100p
ANT1203
MCE62492901
FEED
ANTENNA
L1209
DNI
ANT1202
MCE62492901
FEED
ANTENNA
100p
L1212
VDD_RF_SW
DRX_SEL_1
LU1_LU4_DRX
LU2_DRX
U900_DRX DRX_SEL_0
DRX_SEL_2
TP1
1960MHz
FL1207
45
1
32
G1
O1
IN
G2 O2
1nL1237
DNI
L1238
82p C123382p C1232
DNI
L1236
C123682p82p C1235
LU2_DRX
DRX_U2_DRX_INP
DRX_U2_DRX_INM
LU2_DRX
TP2
TP3