LG LG-D855 - Checking GPS RF Signal Path

3. TROUBLE SHOOTING
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Only for training and service purposes
LGE Internal Use Only
3.9.2 Checking GPS RF Signal path
BOTTOM TOP
U1500
TP2
TP1
TP4
TP3
C1152
DNI
100p
L1138
C1148
100p
L1137
82n
SW1104
43
2
1
ANT
COMMON
G3 G4
ANT1106
1201-01A
FEED
ANT1107
1201-01A
FEED
FL1208
2655.0MHz
532
41
UB1
UB2
G1 G2 G3
DNIL1111
DNIL1154
C1427 DNI
1
2
U1102
R155
8
7
6
5
9
4
3
1
2
GND1
ANT
VCC
VEN
GND3
GNSS_B
GNSS_A
GND2
CELL
+2V7_VREG_L16
0.1uC1428
DNIC1426
1
2
0.5p
L1155
L1129 4.7p
C1145 5.6p
C1117
1n
C1147 5.1p
L1134 DNI
L1131 1.8n
L1133 8.2n
C1118
1.8n
C1156 5.1p
C1460
100p
C1153
0.75p
C1458 100p
GNSS_IN_N
GNSS_IN_P
GNSS_ELNA_EN
WTR_B7_DRX_HB3
MC-C00002-14 : ESD Protection Circuit
( DGMS Guide )
NEAR TO WTR
GNSS RX
B7
rev10
TP2
TP4
TP3
TP1