LG LM-X120HM Service Manual page 42

3.5 GSM, WCDMA, LTE PART
3.5.2 WCDMA PART
Checking RF Signal DRX path(WCDMA/LTE_B5)
START
Check TP1
NO
Check TP2
NO
Change U1301
and retest
LGE Internal Use Only
Checking Flow
Change U1606/L1644/L1605/
OK
and retest RF conductive
Change U1608/L1608/L1609/
OK
L1610/C1601 and retest
TP1
U1301
TP2
Circuit Diagram
42
3. TROUBLE SHOOTING
Image
U1608
TP2
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Only training and service purposes
U1606
TP1