
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
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4.5 Checking Front-End Module Block
GSM1900_RX2
GSM900_RX1
5
6
GSM900_RX2
16
GSM900_TX
VDD
19
WCDMA2100
9
18
CTRL2
22
7
GND1
GND10
23
GND2
8
GND3
10
GND4
12
GND5
13
15
GND6
17
GND7
GND8
20
GND9
21
14
GSM18001900_TX
GSM1800_RX1
1
GSM1800_RX2
2
GSM1900_RX1
3
4
D5011
ANT
11
CTRL1
C123
15p
NA
C122
47p
C111
ANT_SEL0
ANT_SEL1
VREG_RF_SMPS
TP1
TP2
TP3
U100
FL102
Schematic of the Front-End Module Block
Test Point of the Front-End Module Block
TP1
TP2
TP3
Summary of Contents for U370
Page 1: ...Date January 2008 Issue 1 0 Service Manual Model U370 Service Manual U370 ...
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