LG LM-X120HM Service Manual page 58

3.5 GSM, WCDMA, LTE PART
3.5.3 LTE RF PART
LTE RF Part (B28)---DRX
START
Check TP1
NO
Check TP2
NO
Change U1301
and retest
LGE Internal Use Only
Checking Flow
Change U1606/L1601/L1640
OK
and retest RF
conductive
OK Change U1612/L1603/C1604/
L1607/C1631 and
retest
Main
bot
U1701
Circuit Diagram
TP1
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58
3. TROUBLE SHOOTING
Image
U1612
Only training and service purposes
U1606
TP2