LG H990ds - Page 53

Copyright ⓒ 2016 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
Circuit Diagram
MMPA DC/DC
3.7.2 GSM PART – GSM850/900/1800/1900 Tx
TP1(+VBAT)
U1301
(MMPA)
TP2(+VPWR_BOOST_BYPASS_RF)
U1601
(DC/DC)
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