Checking Ant. Sw Module Block - LG U310 Service Manual

4. TROUBLE SHOOTING

4.4 Checking Ant. SW Module Block

ANT_SEL0
ANT_SEL1
ANT_SEL0
ANT_SEL1
ANT_SEL2
Antenna Switch Block(Bottom)
SW1000
R1038
G2
ANT RF
G1
0
KMS-512
C1003
L1007
10nH NA C1005
33p
FL1000
DGM092M03
9
PCN_PCS_TX
11
GSM850_EGSM_TX
21
WCDMA2100
4
CTRL1 GSM850_RX1
5
CTRL2 GSM850_RX2
6
CTRL3
C1018 C1019 C1020
33p 33p 33p
Schematic of the Antenna Switch Block
- 78 -
FL100(DGM092M03)
AN T_SEL2
TP 1. VREG_RFRX_0_2.85V
L1011
VREG_RFRX_0_2.85V
7.5nH
12
EGSM_RX1
13
EGSM_RX2
14
PCN_RX1
15
PCN_RX2
16
PCS_RX1
17
PCS_RX2
18
19
7
VDD
C1015
10p