LG LG-E960 - Page 108

4. TROUBLE SHOOTING
- 108 -
Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Schematic of UMTS Band1/4 RF DRX 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(FL1202)
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
FL1202
45
1
32
G1
O1
IN
G2 O2
DNI
L1225
C1221 1n
L1223 1.8n
1p
L1220
L1222 100p
1.8nC1222
100pL1230
1.8nL1231
DRX_LU2100_L4_L7_INP
LU1_LU4_DRX
DRX_LU2100_L4_L7_INM
LTE_AWS & UMTS_1 DRX
TP1
TP3
TP2