As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERIOR EXIT LIGHT WILL NOT TEST. REMOVED AND REPLACED FWD BATTERY POWER SUPPLY IAW ABOVE REF. AFTER REPLACMENT FOUND CTR EXIT LIGHT AND R1 EXIT LIGHT OPS CHK SERVICEABLE. L1 DOOR OVERHEAD EXIT LIGHT AND FLT DECK EMER LIGHT INOP. PRESSED COURIER TEST BUTTON ABOVE L1 DOOR AND LIGHTS REPORTED AS INOP ILLUMINATED FOR A BRIEF SECOND BEFORE IMMEDIATELY EXTINGUISHING. R & R AFT BATTERY PACK & ALL EMER LIGHTS NOW TEST PROPERLY. PLACARD REMOVED. OK FOR SERVICE.