As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) STARTER GENERATOR FAILURE DURING CRUISE DC GEN NR 2 CAUTION LIGHT CAME ON. RESET ACCORDING TO QRH WITHOUT SUCCESS. AFTER 30 MINUTES, FLIGHT WHEN DESCEND WAS INITIATED AT A LOWER POWER SETTING RESET WAS PERFORMED WITH SUCCESS. OK FOR REST OF FLIGHT. INVESTIGATION/ACTION TROUBLESHOOTING SHOWED A FAULTY STARTER-GENERATOR WHICH WAS REPLACED. THE FAULT WAS CONFIRMED AT THE SHOP.