As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 2887, DURING SCHEDULED MAINTENANCE THE RT OVERWING EMERGENCY EXIT LIGHT DID NOT ILLUMINATE WHEN TESTED. MAINTENANCE REMOVED AND REPLACED THE NR 2 BATTERY POWER SUPPLY, OPERATIONALLY TESTED THE LIGHTING SYSTEM AND CLEARED THE DISCREPANCY.