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4. TROUBLE SHOOTING
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4.5 Checking Front-End Module Block
Rev.D
Rev.B
Rev.C
R1011K
R1001K
L108
15nH
C117
10p
C110
33p
21
14
GSM18001900_TX
GSM1800_RX1
1
GSM1800_RX2
2
GSM1900_RX1
3
4
GSM1900_RX2
GSM900_RX1
5
6
GSM900_RX2
16
GSM900_TX
VDD
19
WCDMA2100
9
ANT
11
CTRL1
18
CTRL2
22
7
GND1
GND10
23
GND2
8
GND3
10
GND4
12
GND5
13
15
GND6
17
GND7
GND8
20
GND9
U500
D5011
33p
C109
VREG_RF_SMPS
ANT_SEL1
ANT_SEL0
ANT_SEL0
ANT_SEL1
TP1
Schematic of the Front-End Module Block
Test Point of the Front-End Module Block
TP1