LG LM-X120HM Service Manual page 32

3.5 GSM, WCDMA, LTE PART
3..5.2WCDMA PART
Checking RF Signal PRX path(WCDMA_B1 (LTE _B1)
Checking Flow
START
Check TP1
NO
Check TP2
NO
Change U1301
and retest
LGE Internal Use Only
Change U1513/L1530/C1514/
OK
L1532 and retest RF
conductive
OK
Change U1521/L1547/R1527
/R1528/L1533/L1534/L1535
/C1516
and retest RF conductive
TP1
Main
bot
TP2
U1521
TP1
U1513
Circuit Diagram
32
3. TROUBLE SHOOTING
Image
U1301
TP2
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