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3. TROUBLE SHOOTING
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Only for training and service purposes
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4. Trouble
Shooting
4. 9. GPS Part
4 9 1 Checking GPS LNA DC Power Circuit
4. 9. 1. Checking GPS LNA DC Power Circuit
Test Point
TP2
TP1
TP2
TP1
Circuit Diagram
TP1
TP2
90
C1149
100p
L1142
DNI
DNI
L113
8
100p
C1160
C1159
100p
DNI
L113
9
L1150
8.2n
100p
DNI
L114
1
L1134
2.2n
+2V75_VREG_L14
10
TOL=0.01
R1104
6.8p
C1143
C1145
0.1u
C1144
33p
R1103
820
IN
1
OUT
4
G1
2
G2
3
G3
5
FL1109
C1148 100p
GND3
VD
D
VCTR
L
RFIN
RFOUT2
GND1
RFOUT1
GND2
SFMG2B0D001
FL1108
4
5
3
6
2
7
1
8
GNSS_ELNA_EN
NEAR TO WTR
L1153
DNI
L114
9
TP1
TP2
3.9.1 Checking GPS LNA DC Power Circuit