Lenovo P70-A 서비스 매뉴얼 - 페이지 9

{카테고리_이름} Lenovo P70-A에 대한 서비스 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Lenovo P70-A 41 페이지.

Repair Manual of Lenovo P70-A Mobile Phone

Main adverse analysis

4.1

4.1.1 No display on screen after power‐on

White screen or blank screen without display; backlight

Check the connection of LCD FPC is good and

re-assembled FPC whether phone is normal

Check the display is normal after replacing LCD,

Check whether the EMI device Z1601--Z1605 of

LCD circuit on main board is solder incompletely;

re-solder EMI device

Check whether there is cold solder joint on other

device around LCD and on LCD connector.

with lighting