The schematics raise questions for me.....the first being which Collective control rod is the one that was damaged and rendered useless by the arcing?
Were any Rod End bearings spot welded that would have caused the Collective Jamming?
Is there a Red Gate that must be "flipped" before the BAT Master Switch can be moved from ON to OFF? (The one visual seems to show there being one).
With the Main and Aux BAT Switches ON....and the BAT Master Switch Off....do the Essential buses have from the Batteries? Logic would say with the Master Switch Off there is no battery power applied to the DC system (assuming both GEN Switches have been moved to OFF.