18PG-C20XUPG-C20XEAN-Z7T6. Removing the connecting terminals/3-dimensional Y/C separation PWB unitassembly6-1. Remove the two lock screws (yellow) and the two supports from the connecting terminals/3-dimensional Y/C separation PWB unit assembly. Slide the PWB unit and draw the terminals out of the bottom plate.6-2. Disconnect the connector (EA) from the connecting terminals PWB unit.7. Removing the center duct and the PBS fan7-1. Remove the one lock screw (yellow) from the center duct and detach the center duct.7-2. Remove the one lock screw (yellow) from the PBS fan and detach the angle and the PBS fan.Connecting terminals/3-dimensionalY/C separation PWBunit assembly6-17-1 6-27-2Center duct(EA)PBS fanAngle