As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING SERVICE CHECK, FOUND CABIN OVERWING EMERGENCY LIGHT SIGNS INOP AT ROW 20 & AMP; 21 INOPERATIVE ALSO, CTR OVERHEAD EMERGENCY EXIT SIGN INOPERATIVE. TROUBLESHOT TO BAD CHARGER AND DEAD BATTERY FWD OF RT OVERWING DOOR. REPLACED EPSU AND BATTERY IAW AMM 33-51-38. EMERGENCY LIGHTS, OPS CHECK NORMAL.