As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)AFTER STARTUP, GOUND POWER WAS DISCONNECTED AND POWER SWITCHED TO AIRCRAFTAT THIS, A LEFT MAIN BUS FAULT WAS INDICATEDTHE CREW TRIED A RESET WITH NO SUCCESS AND #1 ENGINE WAS SHUTDOWN AFTER SHUTD OWN, SMOKE WAS SEEN COMING FROM #1 ENGINE, NO FIRE, STARTER STILL ENGAGED AND SMOKING. MAINTENANCE REPLACED #1 GCU AND STARTER GENERATOR.