3.5 GSM, WCDMA, LTE PART
3.5.1 GSM RF PART
Checking RF Signal RX path(GSM1800)
Checking Flow
START
Check TP1
NO
Check TP2
NO
Change U1301
and retest
LGE Internal Use Only
Change U1513/L1525/C1515/
OK
L1526 and retest RF conductive
Change U1514/L1505/R1505/
OK
R1506/L1527/L1528/L1529/C1
518 and retest
Main
bot
TP2
U1513
Circuit Diagram
TP1
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3. TROUBLE SHOOTING
Image
U1301
U1514
TP1
Only training and service purposes
TP2