LG KG245 Service Manual page 57

4. TROUBLE SHOOTING
(3) Checking Mobile SW & FEM
TEST POINT
CIRCUIT
ANT400 ANT401 ANT402
1p
C407
L407
5.6nH
NA
L400
SW400
KMS-506
C417
22p
GND13 PCS_RX2
24 15
GND12 PCS_RX1
23 14
GND11 DCS_RX2
22 13
GND10 DCS_RX1
21 12
GND9 EGSM_RX2
20 11
GND8 EGSM_RX1
19 10
GND7
18
GND6
17
GND5
16
GND4
7
GND3 DCSPCS_TX
6 5
GND2 EGSM_TX
4 8
GND1
2
FL400
HWXQ511
C439 C440
270p 270p
SW400
SW400.AN T
VC_DCSPCS
VC_EGSM
Figure 4-8 (a). SW & FEM Circuit
C410
NA
C418
NA
ANT_SW1 (GPIO_9)
ANT_SW2 (GPIO_11)
SW400.RF
FL400
WAVEFORM
Graph 5(a) GSM Tx mode
Graph 5(b) DCS,PCS Tx mode
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