Thanks for this manual! I used it to replace the keyboard. I would not recommend it as an easy job and it is not described on Ifixit for unknown reasons. But I did it and everytinhg worked fine. 2 remarks about the conncetion for the keyboard. In my Macbook 17 Pro (mid 2009) there is a litlle lever that clamps the keyboard 'cable'. You can get it out easily (I did that too because I did not see it then), but to reassemble it it is better to uplift the little lever and then move the 'cable' in with sticky tape (thanks for that tip!)
I had to redo it 3 times to get it working. With the lever up and then clamping the 'cable' by pushing it down it worked AND it solved the power button problem. Please be carefull as said in the manual, it is all very delicate!
And for replacing the keyboard; prepare yourself for a lot of tiny screws! (some of them are stuck and had to be removed with force, be warned!)