As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION FOUND THAT THE RIGHT SIDE OF THE AIRCRAFT FORWARD EMERGENCY LIGHT WOULD NOT COME ON. AIRCRAFT REMOVED FROM SERVICE. REPLACED BATTERY PACK POWER SUPPLY NR 2 IN ACCORDANCE WITH EMB AMM 33-50-04. OPERATIONAL CHECK GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.