Only For Training And Service Purposes - LG GT500 Service Manual

4. TROUBLE SHOOTING
4.13.3 GPS RF path
3
VDDE_1V8
R750
0
C752
1u
3
D5
VPD
F1
TESTMODE
B1
RFIN
E2
RFREGOUT
D2
VDDRF
E1
RFSREGOUT
D1
VDDIFSYNTH
C760
1u
F6
_LPREGOUT
LGE Internal Use Only
1
1
2
L750 6.8nH
GPS LNA block
C759
1u
1. Check GPS Antenna pad
2. Change the LNA (U750)
3. Change GPS IC (U751)
Change the sub PCB
VGPS_1V8
10
R770
C771 2.2u
0.1u
C770
2 ACC_GP_GPS_PON
R772 0
5 2
VDD RF_IN
4 3
FIL_OUT GND
L772
100nH
U770
ALM-1612
- 118 - Copyright © 2009 LG Electronics. Inc. All right reserved.
start
1
contact
2
3
1
CN750 CN751
2.2nH C755
1 1

Only for training and service purposes