Nokia 5320 Keypad Problem

Navigation solution and numeric keys - Nokia 5320 keypad problem Here is the solution for not working Nokia 5320 Navigation keys or keyboards. This guide provides some step by step procedures on how to fix it if the keyboard does not respond.  The interface of Nokia 5320 XpressMusic keyboard comes with flex whole matrix, so you may have to first check matrix keypad , membrane keyboard clean or replace it with a new replacement keyboard . The solution then also shows the paths of the connection line of each of the particular key . The keys on the keypad of the inner layer of base are shown in the rows and the outer ring is the column . This can help to do if there are only one or two and not more than four keys that do not work.  However, if and confirmed that the problem is not the flex keyboard , you can consult the following solution below and check the components highlighted. You can also check first pin can damage and clean if necessary. There are four 47 ohm resistors and ESD protection components in the lower portion of the pin connector . You may check each of these components or replace the need . If the above solution does not solve the problem, the possible failure is the CPU IC , reheating or reworking could not solve the problem of Nokia 5320 keypad.