LG L240 Service Manual page 45

4. TROUBLE SHOOTING
4.2.1.3 Mobile Switch & PAFEM & SAW Bank Circuit
C75 0
C72 4
C72 5
U70 1
C71 2
C73 3 C72 2
C73 4
C711
RX
<GSM850>
Mobile Switch
SW701
SW701 between C701 and C750
C70 1
Check Control Signal
C722,C724,C725,C733,C734
Check the C712 Level
Check U702
FL701
LB_HB
TX_ANT_SW_EN
- 46 -
NO
Is short?
YES
PAFEM
* Refer to the table.1
NO
YES
NO
≥
-68dBm
YES
RX
<PCS1900>
Replace SW701
Check U702
Replace U701
RX