As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - INFLIGHT JFK-LAX. CREW REPORTED RIGHT DC CIRCUIT BREAKER POPPED AND THEN ELECTRICAL SMELL IN CABIN. EMERGENCY DECLARED, LANDED ORD WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED CIRCUIT BREAKER C891 AND LEFT AND RIGHT RECIRCULATION FAN FILTERS. SYSTEM GROUND CHECK NORMAL OPERATION.