After dis assemble of Nokia C5-03 look at mother board and If you found some rust carbon or water damages then it can also be cause of Nokia C5-03 memory card MMC problem to solve and fix memory card MMC problem in Nokia C5-03 clean all the rust and carbon with electronics cleaner and apply hot air to make it dry.
In above diagram some different color lines are given. these line are the tracks of MMC jacket and going to MMC IC. Re sold memory card and re flow of MMC can solve memory card problem in Nokia C5-03.
How to jumper MMC of Nokia C5-03 memory card
in the above diagram different color jumpers are given to show how you can jumper Nokia C5-03 MMC memory card to solve memory card problem in Nokia C5-03.
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