LG KS20 - Checking Front-End Module Block

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
Rev.F
SFAY0010001
33p
C516
ANT500
33p
C514
33p
C503L500
3.9nH
4.7p
C502
33p
C515
ANT501
VRF_SMPS
C509
0.1u
100nH
L502
13
4
GND4
5
8
GND5
10
GND6
12
GND7
GND8
17
18
GND9
7
NC
22
PCS_RX1
PCS_RX2
21
PGND1
25
PGND2
26
9
UMTS_TX_RX
14
VC1
15
VC2
VC3
16
VDD
ANT
11
DCS_PCS_TX
3
DCS_RX1
20
DCS_RX2
19
EGSM_RX1
24
23
EGSM_RX2
6
EGSM_TX
1
GND1
2
GND2
GND3
FL500
LSHS-M090UE
0
R500
15nH
L501
KMS-506
ENWY0002301
ANT
G1
G2
RF
SW500
NA
C506
C505
1.5p
ANT_SEL2
ANT_SEL1
ANT_SEL0
ANT_SEL0
ANT_SEL1
ANT_SEL2
TP1
Schematic of the Front-End Module Block
Test Point of the Front-End Module Block
TP1