LG LM-X120HM Service Manual page 52

3.5 GSM, WCDMA, LTE PART
3.5.3 LTE RF PART
LTE RF Part (B7)---DRX
Checking Flow
START
OK
Check TP1
NO
OK
Check TP2
NO
Change U1301
and retest
LGE Internal Use Only
Change U1606/C1602/L1606
and retest RF
conductive
Change U1602/L1638/C1617/
L1639/C1616 and
retest
TP1
U1301
Circuit Diagram
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52
3. TROUBLE SHOOTING
Image
U1605
TP2
TP1
Main
bot
TP2
Only training and service purposes
U1606