Checking Front-End Module Block; Only For Training And Service Purposes - LG U990 Service Manual

4. TROUBLE SHOOTING

4.4 Checking Front-End Module Block

TP1
ANT_SEL0
ANT_SEL1
ANT_SEL2
C113
47p
TP2
C114
47p
TP3
LGE Internal Use Only
TP3
5
VC1
4
VC2
3
VC3
1
GND1
C115 2
GND2
47p
9
GND3
11
GND4
12
GND5
14
GND6
15
GND7
17
GND8
18
GND9
25
PGND1
26
PGND2
Schematic of the Front-End Module Block
TP1
TP2
TP4
Test Point of Front-End Module Block
- 98 -
10
ANT
6
VDD
7
NC
8
UMTS_TX_RX
13
DCS_PCS_TX
16
EGSM_TX
19
DCS_RX2
20
DCS_RX1
21
PCS_RX2
22
PCS_RX1
23
EGSM_RX2
24
EGSM_RX1
LSHS-M090UH
Copyright © 2007 LG Electronics. Inc. All right reserved.
TP4
VREG_RF_SMPS
C109
47p

Only for training and service purposes