What was found
FLT 3348 ON FINAL FLT ATT REPORTED HEAVY SMOKE AND ELEC FIRE ODOR IN CABIN, SOURCE WAS AROUND 7B/7C. CREW DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. AC WAS REMOVED FROM SERVICE. EVIDENCE OF BURNED MARKS. SHORTED WIRE W166-8611, REPAIRED WIRE W166-8611-22 IAW WM 20-21-00, ON CIRCUIT BOARDS 8BC, 9A, 9BC. R&R CIRCUIT BOARDS 8BC 9A 9BV IAW CMM 25-28-23. 7A, 8A, 9A AND 10A WALL AND CEILING LIGHTS INOP. R&R LIGHT BULB S 7A, 8A, 9A AND 10A, IAW EMB 145 33-21-00 AMM. SOCKETS ARE GOOD. THE 1A AND 2A CEILING LIGHT INOP. R&R LIGHT BULBS AT 1A AND 2A. INSPECTED LIGHT SOCKETS. FOUND GOOD WITH NO BURN MARK FOUND. OPERATIONAL CHECK IS GOOD IAW EMB 145 33-20-00 AMM. AIRCRAFT RETURNED TO SERVICE.