Mobile Phone Xolo Mirage Plus (Smartphone)
Service Manual
Page
27
of 40
4.10Charging issue analysis
Charging
failure
Charging
failure
Replace CPU U600
Replace CPU U600
End
End
Is battery/charger normal?
Is battery/charger normal?
Replace
battery/charger
Replace
battery/charger
N
N
Y
Y
Is USB sub-board/FPC/connector
normal
?
Is USB sub-board/FPC/connector
normal
?
Rectify/resolder/
replace
Rectify/resolder/
replace
N
N
Y
Y
Upgrade firmware
Upgrade firmware
Is Switching Charger U101/PMU
U303 OK
?
Is Switching Charger U101/PMU
U303 OK
?
Resolder or replace
U101/U300
Resolder or replace
U101/U300
Y
Y
N
N
Figure 4.10 Charging failure repair process
❶
Upgrade new software for the mobile phone;
❷
Check Battery and Charger;
❸
Check Battery
Connector (J100) , USB Connector;
❹
Replace the Switching charger U101 or PMU U300 and
test it again. If problem still not solved, you need to follow the product circuit diagram to check
CPU;
❺
After repaired, enter into „Factory Mode‟ by press “Power on” key, volume “-” key the
same time for three seconds. Select “19 Battery” and then plug in USB cable you can verify the
function now.