As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2900 - EWR - FLIGHT CREW REPORTED CABIN EMERGENCY LIGHTS ON IN ARMED POSITION DURING PUSHBACK. EWR MX REMOVED AND REPLACED INVERTER NR 4 & 5 AND POWER SUPPLY NR 5 AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. ACFT WAS APPROVED TO RETURN TO SERVICE. C2XA09RI209 REPORTS INVERTER INFORMATION AND C2XA09RI210 REPORTS POWER SUPPLY INFORMATION.