LG GD510 - Page 80

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5. Trouble shooting
GD510 Operational Description Revision A
LG Electronics 86/113 LGE Property
5.12.3 Checking Mobile SW & FEM
EGSM/GSM850 DCS/PCS
FE1 OFF ON
FE2 OFF OFF
TP4_C613 (FE1)
FL601G
TP1
TP2
TP3_C632 (FE2)
TP5 ~ 8G
SW601G
TP4
TP3
TP1
TP2
Mobile SW & FEM Circuit Diagram
Figure 8. Mobile SW & FEM Circuit
Checking Points
Figure 9. Mobile SW & FEM
Table 2. FEM RX Control Logic
z
H
M0
0
9
1,0081,009
,
05
8
410M0111MGD
106LF
0251
9101 81 6
18
117
96
5
214
3
312
4
11
17
ANT
1XR_0
5
8MS
G 1
CV
2X
R
_05
8MS
G 2CV
1XR_009MSG 2XR_009MSG DDV
1X
R
_00
8
1MS
G
2XR_0081
MS
G 1
D
NG
1XR_0091MSG 2DNG 2X
R_
0
091MSG
3
D
NG
4DNG
XT_0091_0081MSG 5DNG
XT_009_058MSG 6DNG
0
C656
IND 896C
0
C625
0.5p
C697
C608 22p
C613
100p 100p
C632
A
NT601
ANTENNA_PAD
ANT602
ANTENNA_PAD
C635
39p
C636
100n
0
9
96
C
DNIC643
L608
100n
VRF_2V85
SW601
GRS302-2S-H22-E3000
G2
ANT RF
G1
FE1
FE2
TP1
TP4
TP3
TP2