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5. TROUBLE SHOOTING
5.13.6. Checking FEM & Mobile SW
TP1
TP1
SW401
SW400
G2
ANT
G1
RF-800
UFL-R-SMT10
1V5_VRF
C408
TP2
LGE Internal Use Only
C416
1n
Mobile SW & FEM Circuit Diagram
TP2
TP2
C420
G2
ANT
ANT
RF
G1
11
100P
L406
C437
100NH
DNI
GSM850
2V85_VRF
2V85_VRF
C403
Figure 28. Mobile SW & FEM Circuit
Checking Points
TP4_R405 (FE2)
FL400
FL401
TP3_R400 (FE1)
TP5
Figure 29 Mobile SW & FEM
Table 5. FEM TX Control Logic
EGSM/GSM850
FE1
ON
FE2
ON
C413
C412
100P
100P
NC2
24
NC1
FL400
23
LMSP43QA-538
TP3
GSM900
DCS1800
PCS1900
DCS/PCS
OFF
ON
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Copyright © 2009 LG Electronics. Inc. All right reserved.
R400
100R
FE1
R405
100R
FE2
TP3
TP4
TP4
TP5
TP5
L404
5.6p
C446
C424
33n
27n
L405
3.9n
C423
C435
DNI
1.5p
SW400
SW401
TP2
TP1
TP1
Only for training and service purposes
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Table of Contents
Troubleshooting
