Lenovo VIBE X2 Servicehandleiding - Pagina 18
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3.7 Phone crash
Connecting
computer through USB line,
check whether some new device
was found in the computer.
Check the 19.2MHz crystal is
normal?
Check PMIC provide power
supply to CPU and EMMC
are normal?
Replace the memery U1502,
whether
working normal.
Change CPU chip U1001
Phone crash
the
phone
and
N
Y
Y
the
phone
N
Y
Download software
N
Heat the crystal
then try it again.
Heat the PMIC
N
or change the
PMIC.
Y
is
OK
18