LG L240 Service Manual page 38

4.1.2.2 VCTCXO
Produce RF and BB reference Clock - 26MHz Clock.
C741
X701
C742
4.1.2.3 Power Amplifier Front End Module (MMM6027)
Select the RX / TX path and amplifier the power.
] Part Description Front End Module Switch Control
C722 : IPC_BCM
C724 : LB_HB
C725 : TX_ANT_SW_EN
C733 : US-EURO
C734 : TX_EN
K12
CSX
L12
PCS
K4
XTAL
K5
XTAL
VCC_1.8V
R711
100K
<Fig.2> VCTCXO Circuit Diagram
C724
C725
R705
X701
U701
U701
R704
C742
C733 C722
C734
- 39 -
4. TROUBLE SHOOTING
C741 330p
X701
1 3
VCONT OUT
R718
C743
2 4
1u
100K GND VCC
26MHz
VCC_2.8V
C742
33u