What was found
THE CREW REPORTED THAT THE EMERGENCY BUSS OFF LIGHT ILLUMINATED DURING DESCENT. THE ISSUE WAS ISOLATED TO EMERGENCY DC BUSS NR 2 FAILURE. EXTENDED GEAR BY ELECTRICAL OVERRIDE. AN EMERGENCY WAS DECLARED PRIOR LANDING. MAINTENANCE INSPECTED WIRING & COMP IN LT DC RELAY BOX & EMERGENCY DC 2 AREA. NO DEFECTS NOTED. R & R THE CIRCUIT BREAKERS 0470, IAW MM 24-52-05. PERFORMED OPS CHECK OF EMERGENCY BUSS 2, PERFORMING COMPLETE EMERGENCY TRANSFER FUNCTION OPERATIONAL TEST IAW MM 24-52-00 (5)(A)(B). ALL CHECKED GOOD, NO DISCREPANCIES NOTED.