
X458 L3 Service Manual
33
Connect the charger without
battery put in, check if the voltage
of positive pole is around 3.6V.
Replace
or
re-solder
CPU
MT6250
If recognize “charger
connected”
Does not charge – does not recognize charging
Change battery
Re-flash SW
Resolved
NO
YES
YES
YES
YES
YES
Re-solder
or replace
I/O
connector
There is no symbol
shows charging
Power on and connect charger,
input *#84666*# to check if
ADC is around 0.40A
Check battery connector
testing Pin, if the bias resis
and vatge be normal.
NO
YES
NO
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Summary of Contents for X458
Page 13: ...X458 L3 Service Manual 13 All manuals and user guides at all guides com ...
Page 14: ...X458 L3 Service Manual 14 Output of SIM Card All manuals and user guides at all guides com ...
Page 17: ...X458 L3 Service Manual 17 Display interface All manuals and user guides at all guides com ...
Page 48: ...X458 L3 Service Manual 48 All manuals and user guides at all guides com ...