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Thread: nokia 7230 keypad and lcd light problem

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    Smile nokia 7230 keypad and lcd light problem

    hi,nokia 7230 incoming and outgoing is workig but lcd light and keypad light is not working, pls give me solution for this problem.

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    change key pad streepe check brother

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    i chenge keypad streepe but same.give me onther solution.

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    Thumbs up Nokia 7230 Full Keypad Solution- Keypad IC Jumper ways and Tracks

    the full keypad solution for Nokia 7230 keypads failure or malfunction.
    This solution may possibly help fix Nokia 7230 if any certain keys stop responding or not working.

    This solution shows the line paths of the Numeric keypads only, the navigation keys like SELECT, UP, DOWN, LEFT, RIGHT, Soft Left, and Soft Right and including the Power Key are connected within the Flex keypad membrane, so if the above keys only stop responding you may need to check and replace the flex cable first before using this solution below. Since all keys including the Upper keys or Navigation keys and the Numeric keys are both connected to the EMI-ESD filter IC. There is a certain point and possibility that all of these keys may not work or stop responding due to a water damaged, you may then proceed to use this solution below.The numeric keys are group by outer and inner core layers of connections. There is a resistors which has a resistance value of 470 ohms that is being used in particular connections, you may check and replace this components also if found damaged.
    The ESD-EMI filter chip protect the circuit from Electrostatic hazards, there is a possibility that this chip will breakdown and cause the keypad not to work or function, for it cuts off the its connection line paths through to the Application Processor Chip or CPU. Some factors are those due of water damaged, dirt, molds and oxidation build up.
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    Last edited by dodobaba; 07-02-2011 at 04:20 PM.

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    Default Nokia 7230 key pad solution

    Here is link for download nokia 7230 keypad way jumpers solution

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    hi,nokia 7230 incoming and outgoing is workig but lcd light and keypad light is not working, pls give me solution for this problem.

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