Checking Front-End Module Block; Only For Training And Service Purposes - LG KS20 Operating Instructions Manual

4.5 Checking Front-End Module Block

ANT500 ANT501
R500
0
ANT_SEL0
ANT_SEL1
ANT_SEL2
TP1
Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

SW500
L500 KMS-506
C502
G2
ANT RF
G1
3.9nH
4.7p
C505 C506
ENWY0002301
1.5p NA
ANT_SEL0
ANT_SEL1
ANT_SEL2
C514 C515 C516
33p 33p 33p
Schematic of the Front-End Module Block
Test Point of the Front-End Module Block
4. TROUBLE SHOOTING
C503
33p
L502
100nH
Rev.F
FL500
LSHS-M090UE
14 11
VC1 ANT
15
VC2
16 13
VC3 VDD
1 7
GND1 NC
2
GND2
4 3
GND3 DCS_PCS_TX
5 6
GND4 EGSM_TX
8 9
GND5 UMTS_TX_RX
10 19
GND6 DCS_RX2
12 20
GND7 DCS_RX1
17 21
GND8 PCS_RX2
18 22
GND9 PCS_RX1
25 23
PGND1 EGSM_RX2
26 24
PGND2 EGSM_RX1
SFAY0010001
- 89 -
TP1
L501
VRF_SMPS
15nH
C509
0.1u
LGE Internal Use Only