As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DC GEN AMPS L AMBER CAS: MESSAGE ILLUMINATED IN FLIGHT CLIMBING THROUGH FL310. L GEN AMPS PEAKED AT 410 AMPS. COMPLIED WITH QRH PROCEDURE WHICH INDICATED FAULT ON THE BATTERY OR EMER BUS. REMOVED AND REPLACED LEFT POWER DISTRIBUTION PCB. PN OFF/ON 6768150-24 S/N OFF 33467522-1 S/N ON 0507