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Main supply voltage see 5.1.2 picture，part of LCD see below picture mark：
2013-10-18
YU220 service manualV1.0
Restart
fixed
screen
No erasure and all
erasure update
software
N
Welding or body
LCD
damage
N
Measuring main voltage
is normal
Ｙ
replace FLASH （ U601 ）
Whether is ＯＫ？
Ｎ
replace CPU （ U301）
Huawei secrets, no dispersion without permission
Y
End
Y
End
Ｎ
replace U501
Ｙ
End
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