As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE MAINTENANCE VISIT, SECOND CEILING AISLE EMERGENCY LIGHT FOUND TO BE INOPERATIVE. LIGHT WAS RELAMPED, BATTERIES AT POSITIONS 300, 400, 500 AND 600 WERE REPLACED WITH NO FIX. AFTER FURTHER TROUBLESHOOTING A PIN WAS FOUND BROKEN IN CONNECTOR HOUSING. PIN WAS REPLACED. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.