FLY IQ449, Руководство по обслуживанию

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IQ449 service manual
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Check phone can
switch on or not
YES
Check applications,
USB cable, software is
OK or not
YES
Check I/O connector is
OK or not
NO
Check C0342 have VBAT
supply or not
YES
Re-solder or replace
U0100 SC7710
END
NO
Check battery is OK or not
NO Re-install USB driver and
replace USB cable
YES Re-solder or replace I/O
connector
NO
Check U0100 is OK or not
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