C2-01 Nokia Keypad Not Working IC Jumper Ways Filter Problem Solution

This is Nokia C2-01 solution for not working keypads problem. This solution shows the connection line paths of the C2-01 keypad matrix including the EMI filter IC jumper ways. This may help for easy troubleshooting a keypad failure on the phone.

Just refer to the solution below and analyze how each certain keypad keys being connected. This solution may also help in bypassing the keypad EMI filter IC.

Nokia C2-01 Keypad Problem Repair Solution

Hints on Nokia C2-01 Keypad Malfunction Repairs:
1. Clean the keypad matrix including the keypad membrane.
2. Trace the connection line paths of a certain keys that doesnt work.
3. Check/replace the Keypads EMI filter IC or you can bypass it by applying a jumper wire on the open test point or spots as shown on the picture above. It will work too.

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