Lenovo A516 Service Manual - Page 11

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Repair Manual of Lenovo A516 Mobile Phone

3.1.2

LCD backlight without lighting

Check whether the connection of FPC on

LCD module and connector on main board is

good and whether the LCD backlight is

normal after reconnection

Re-verify whether the LCD backlight is

normal after replacing LCD.

Check whether there are voltages more than

20V between both ends of C1606 when LCD

is lit.

Check the welding condition of U1601

and peripheral devices, including

L1601, D1601, ,R1620,R1609,C1607

If the backlight circuit is

normal, it is the problem

of LCD