How To Jumper KeyPad IC in Nokia 1662 if a set of keys is not working Problem solution Ways Tested
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if 8,0,#,left and Menu key is not working check the track one for outer.
if send,down,clear and 8 key is not working check the second track for outer.
if 1,2,3,9 and right key is not working check the third track for outer.
if 4,5,6,7 and up key is not working check the forth track for outer.
if menu,up,down and 9 key is not working check fifth track for inner.
if left,right,send and 7 key is not working check sixth track for inner.
if 1 4 and * key is not working check seventh track for inner.
if 2,5,8 and 0 key is not working check eighth track for inner.
if 3,6,# and clear key is not working check ninth track for inner.
if * 0 # and menu keys are not working make the tenth diagram's jumpers just two jumpers and no need to change keypad ic in nokia 1662.
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