As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXTERIOR EMERGENCY EXIT LIGHT AT LT AND RT AFT ENTRY DOORS, DO NOT ILLUMINATE. REPLACED FUSE AND BATTERY PACK IN M1672 POWER SUPPLY AND JUST THE BATTERY PACK IN M1673 POWER SUPPLY. EMERGENCY LIGHTS OPS CHECK GOOD REF AMM33-51-06-960-804 AND AMM 33-51-06-960-805.