GSM Learning solution

This is a solution for nokia X5-01 upper keypad flex that is not working or functioning. If encountered a problem like the Send, Music, S60-L, Soft left, Soft right, Left, Right, Up, Down, Select and the End / power button keys that is not working this solution may possibly help fix the problem.

The following solution shows the  flex keypad connection line paths for easy tracing and check up procedures. This can be also used to locate where and which components needs to be check and or where can apply and put a jumper when theres a line being cut or open due to wet or water damaged.

In troubleshooting upper keypads you must first visually check the flex assembly for possible damaged, scratched or cut. A damaged flexible cable wire assembly needs to be replaced a new replacement spare.
However, if there is only one key that is not working except the END/POWER key, you may refer this solution below for it shows the connection line paths of the upper keypad keys board on the flex assembly.



The Send, Music, S60-L, Soft left, Soft right, Left, Right, Up, Down, Select and the End / power button keys connection used filter coils that is mounted or located at the back side of flex. If only one key is not working except the power key , you may first trace the corresponding line paths and filter coil connected to it, then just replace or mend to reconnect the open or cut line paths.  If there is two or more keys that is not working you may suspect that the flex is already damaged it is because the solution shows that there are minimum of two certain keys shared in one line paths except the power on/off button.

The next solution below can be used for further upper keypad keys breakdown or failure. This solution can be used if the keypad flex is already been tried installing a new replacement flex ribbon wire, for it shows the complete connection line paths from the flex pin connector to the keypad filter IC solder ball bumps.

If already tried installing a new flex cable wire but still the keypads keys still doesnt work, you may need to replace the Keypad filter IC located or mounted near the Flex pin connector. You can also temporarily apply the jumper solution just to determine if all the connection line paths is working okay.

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