Step 5 is about removing the cover which protects the processor from any outside damage

The cover is attached to four pins. In order to remove the cover, it has to be pulled towards the left.

CAUTION: There may be a plastic (rubber) pin (see Image 2), which was put in place for guarantee purposes, therefore before sliding the panel, you should locate and remove this pin

It can also be pushed from the inside (by lifting the bottom of the cover first) (see image 3)