Nokia C5-03 Volume Keypad Lock keys not working Solution

If keypad lock key or volume keys are not working in Nokia C5-03 It can be cause or key damages or water damages in the mobile phone.If smartphone keys are not working you can do these steps that are given in this post and diagram bellow.
Nokia C5-03 Volume Keypad Lock keys not working Solution
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 keys problem to solve and fix keys 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 you can see some different color lines. These lines are tracks and paths of keys button switch that are used for keypad lock and volume of keys button switch.

Check all these tracks with meter and apply jumpers. If these key switches are not working then you can replace volume and keypad lock buttons.

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