The solved

If nokia 111 lcd light is not lighting (not working) you can solve this problem by following a few steps that are given bellow in diagram.In bellow diagram you can see some different color lines. All these lines are given to show different lcd track that are used in display function of nokia 111.

Print number 10 and 11 is used for light in nokia 111. so if your lcd display is proper but only light is not working you should have focus on these two lines and check there path and parts.If you find any missins part or damage part then apply jumper there.