As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4272, MAINTENANCE REPORTED EMERGENCY EXIT SIGN OVER FLIGHT ATTENDANTS JUMP SEAT, CEILING LIGHT BY GALLEY AND LIGHT BY STEP UP TO FLIGHT DECK INOPERATIVE. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED BATTERY POWER SUPPLY (HOLDER AND ELECTRONIC ASSY) NR 1 IAW EMB AMM 33-50-04. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE. (A)