As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHT BATT FAULT ON EICAS. INTEROGATED CMC AND FOUND FAULT CODE 33500001UT1. FOLLOWED FIM TASK 33-50-00-810-801-A00. TROUBLE SHOT TO FWD RH EMERGENCY LIGHT POWER UNIT. RAR FWD RH EMERGENCY LIGHT POWER UNIT IAW AMM 33-50-01. OPS CHECK GOOD.