In above diagram you can see some different colors these are set of inner and outer.each color shows a set of keys so if any of them is not working you can apply jumper with same color inner or outer,
all inner keys can be jumper with same inner key but color should must be same.
as inner outer can be jumper with outer but color should must be same.
so in above mentioned tips and tricks we can solve keypad problem easily.
Here is a keypad ic diagram you may have to replace this ic also in solving key pad problem of Nokia C2-01.
for more detail and new tips and tricks about cellphone service problem keep visiting this page we will update cellphone service diagrams timely with new cellphone diagrams.some related post are also given bellow you can read them also for more information about cellphone.
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