What was found
(CAN) AFTER ENGINE START AND DC EXTERNAL POWER DISCONNECTED THE CREW RECEIVED A DC BUS, A NR 1 DC GENERATOR AND THE AUXILIARY INV CAUTION LIGHTS. WHILE ACTIONING THE QRH, SMOKE BEGAN TO EMIT FROM THE LT GLARESHIELD AREA. THE ACFT WAS SHUTDOWN AND PASSENGERS DEPLANED. MAINTENANCE INVESTIGATION FOUND THE LT FUEL QTY INDICATOR POPPING THE CB. THE LT FUEL QTY IND WAS REPLACED. LT FEEDER CONTACTOR 2431-K1 WAS ALSO REPLACED. THE ACFT WAS RUN AND SYSTEMS CHECKED WITH NO FURTHER ISSUES.