To Reinstall: WARNING! Release the plastic cams only after tightening the screws that secure the VTU to the chassis. 1 Before tightening the screws, make sure that the metal locating tabs are in place. 2 Reconnect the cables that run from the VTU to the chassis at the right side’s upper-back corner (callout 2). 256 Chapter 6 Removal and Replacement C4085-91087