Before proceeding, note how the 3 ribbon cables are oriented (what direction the gold contacts face) and layered together (which cable is on top of which). The cables are too short to reach if they are threaded through in any other orientation.

Slowly pull the upper display assembly away from the upper case.

Make sure that the various ribbon cables are being fed through the slit in the upper case.

Separate the upper display assembly from the upper case.