Nokia 6303 classic keypad IC jumper ways and line tracks solution

Here's the  solution for Nokia 6303 classic Keypad line tracks and keypad filter IC jumper ways. This solution below may possibly help fix and repair a certain keypad malfunction that stop responding on a damaged Nokia 6303 classic cell phones.

Nokia 6303c keypad Line Tracks and filter Ic jumper ways solution
nokia 6303c keypad IC jumper ways picture
 Hints for troubleshooting Nokia 6303 classic keypad failure problem:
Ensure that the keypad membrane is perfectly clean before trying to trace each corresponding keypad keys that is not responding. Majority of each group of connection has three keys are connected together, therefore if only one or two keys are not working, the problem may lies on open line tracks. If more than three or all of keys are not working the problem may lies on a damaged EMI-ESD filter chip.