Checking Gps Rf Signal Path - LG -D855 Service Manual

3.9.2 Checking GPS RF Signal path

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