I think you would only need to go to step six assuming the fan top left of step 6 image is over the CPU heatsink
https://www.ifixit.com/Guide/Lenovo+X200+Disassembly/110596
edit - approx 14:45 you can see the CPU and heatsink is actually on the underside of the image in step 6 so youll need to take it apart further