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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
4.18 Checking Front End Module Block
Figure 4-11-1. Front End Module Block (Bottom and Top)
TP01
TP01
Figure 4-11-2. Schematic (Antenna Switch GSM/EDGE PA)
Antenna
Switch Module
(+ GSM/EDGE PA)
Antsw0
Antsw1
Antsw2
Antsw3
22p
smd_0603h_3_r
C126
22p
smd_0603h_3_r
C124
RSVD
10
RX1
16
15
RX2
RX3
14
13
RX4
_TXEN
8
11
GND2
GND3
12
21
GND4
GND5
22
23
GND6
24
1
HB_RF_IN
LB_RF_IN
3
9
MODE
SKY77521
U102
17
ANT
BS1
7
6
BS2
2
GND1
C125
smd_0603h_3_r
22p
C127
smd_0603h_3_r
22p
ANTSW2
ANTSW0
ANTSW3
ANTSW1
GTX_850_900
GTX_1800_1900
TP01