Check Mobile Sw & Ant Sw - LG KG110 Service Manual

4.3.5 Check Mobile SW & ANT SW
L411
R427
Vmod_en
Operating Mode
TX GSM 850/900
TX DCS/PCS
Figure 4-14
Table 4-3
Vmod_en
H
H
41
4. TROUBLE SHOOTING
Control Voltage
Vtx Vbs1
H L
H H
SW400.ANT
SW400.RF
R418 Vtx
L405 Vbs2
L406 Vbs1
Vbs2
L
L