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Only training and service purposes
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3. TROUBLE SHOOTING
3.5 GSM, WCDMA, LTE PART
3.5.1 GSM RF PART
Circuit Diagram
Main
bot
TP1
Check TP1
Change
U1513/L1525/C1515/
L1526
and
retest
RF
conductive
Check TP2
START
Change
U1301
and
retest
U1513
Checking Flow
Image
U1514
U1301
NO
OK
OK
NO
TP1
Change
U1514/L1505/R1505/
R1506/L1527/L1528/L1529/C1
518
and
retest
TP2
TP2
Checking RF Signal RX path(GSM1800)
26
Содержание LM-X120HM
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