If you still get bad print results, do a few “clean print head” and “align page” and see the quality of the print each time. It should get better (I started getting a good print out after 5th attempt)

First remove the lever so you can access the two top screws. Remove the lever by pulling it while pushing its top hinge.

Screws for PCB are not required to be removed. You can try to take cable out white PCB is in its place.