LG LM-X120HM Service Manual page 36

3.5 GSM, WCDMA, LTE PART
3.5.2 WCDMA PART
Checking RF Signal DRX path(WCDMA/LTE_B2)
Checking Flow
START
Check TP1
NO
Check TP4
NO
Change U1301
and retest
LGE Internal Use Only
Change U1606/L1624/C1612/
OK
L1626 and retest RF conductive
Change U1605/L1622/C1608/
OK
L1623/C1609 and retest
Circuit Diagram
TP1
Image
U1301
TP2
TP2
Copyright ⓒ 2019 LG Electronics. Inc. All right reserved.
36
3. TROUBLE SHOOTING
U1606
U1605
TP1
Only training and service purposes