LG TracFone LG840G Service Manual page 73

PART 1
GPS EXTERNAL LNA
1.When GPS is ON, Check
TP1 is 2.85V
2.When GPS is ON, Check
TP2 is 1.8V
ANT801
C874 100p
LGE Internal Use Only
close to antenna
3
FL802
L849 1.8n
1
IN
G1 G2
2 5
L809
C853
6.8n
DNI
1575.42 MHz
- 73 -
TP2
FB807
VREG_TCXO_2.85V
TP1
1
L808
G3
4 2
OUT
6.8n
3
C852
DNI
GPS_LNA_EN
Copyright © 2012 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
TP1
60
C840
10p
U804 ALM-2506
7
PGND
NC1
6
VDD
RF_IN
5
RF_OUT
NC2
4
VSD
EUSY0400201
FB808
60
C855
10n
Only for training and service purposes
L806
3.9n
C851
100p
TP2