Removal and installation steps of DC-in connector, base cover, fan, digitizer pen case, and pen switch assembly - ThinkPad X220 Tablet and X220i Tablet - Lenovo Support NG
Πως να κάνω αλλαγή μπαταρίας σε τάμπλετ σε 5 λεπτά. How To Change battery of Tablet in 5 Minutes - YouTube