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This is sprint 7700 Power button ways when broken or damage power button then apply this jumper.Some time may be broken power button line so this solution very useful.You may repair other power button related problem using this solution.how to work it, view the below picture and text.
How to work : First check power button using multi metar if you see no connected with the diod you make this jumper.If you see power button is short then check diod ,resistor ,and capacitor, damage any parts change that.when short power button then phone auto on.If all parts ok but problem still then replace power ic mt6305.Thank you every body.