Mobile Phone Xolo Mirage Plus (Smartphone)
Service Manual
Page
18
of 40
For high current issue, it means this mobile phone must be short circuit, the most probable cause
chipset are Baseband IC (U600), Memory IC, RF IC, RF PA (GSM & WCDMA), ESD protection
Diode, etc.). We can attempt to touch these chipset, and feel the temperature is normal or not. If
one of the chipset‟s temperatures is abnormal, replace it.
4.2 Display issue analysis
Is FPC/connector
normal?
Is FPC/connector
normal?
Is LCD normal?
Is LCD normal?
Replace CPU U600
Replace CPU U600
End
End
Resolder/replace
Resolder/replace
N
N
N
N
Y
Y
Upgrade firmware
Upgrade firmware
Y
Y
Replace LCD
Replace LCD
Is the relevant
component normal
Is the relevant
component normal
N
N
Y
Y
Replace the
component
Replace the
component
Figure 4.2 Display failure repair process
❶
Upgrade new software for the mobile phone;
❷
MIRAGE PLUS‟s LCD is connected to
mainboard with FPC. We can check the FPC and FPC connector (J904) is normal or not, if it is
abnormal, re-solder or replace it.
❸
After upgrade new software and LCD replaced, the problem is
still not solved. Please try to follow the product circuit diagram to check the LCD data path, LCD
power supply path and CPU.
